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SERVICE MANUAL

1. auror Problem peter Eor Problem ig 5o Replacement time of the drum 4 7 7B Main PCB failure 1 13 56 Fuser cover opened 1 8 7D Dirt on drum unit 1 14 Fuser unit failure 58 Stand ready in the given time 1 8 ZF _ Fax paper setting mismatch 1 14 59 Fuser unit failure 1 8 80 Fax paper size is small 1 14 5A HVPS PCB ASSY failure 1 9 84 Paper jam in rear of the machine 1 16 New toner detecting lever CTR 5B malfunction 1 9 88 Paper jam inside the machine 1 16 63 Toner cartridge is at the end of life 1 10 8A Paper jam in Tray 1 T1 1 17 67 Mei of the tonehcabridge ls 1 7 8D Paper jam near paper eject tray 1 17 68 Fuser unit failure 1 11 9F Paper empty 1 18 69 Fuser unit failure 1 11 A1 Front cover open 1 18 6A Fuser unit failure 1 11 A2 Document is too long 1 18 Document rear sensor is not 6B Fuser unit failure 1 11 A3 turned on when feeding the 1 19 document ee Fax scanning error 6C Fuser unit failure 1 11 A5 First warning only 1 19 Fax scanning error The second 6D Fuser unit failure 1 11 A6 warning that the same error with 1 19 A5 occurs again 6E Fuser unit failure 1 11 AD DMA transfer error 1 19 6F Fuser unit failure 1 11 AF FB unit home position failure 1 20 f Harness for scanning is not i 71 Polygon motor failure 1 12 BO connected correctly 1 20 BD beam detecting sensor 72 malfunct
2. Location of screw Screw type Q ty pon ee R JOINT COVER SUB CHUTE ASSY Taptite bind B M4x12 0 80 1 8 1 INNER CHUTE ASSY Taptite bind B M4x12 0 60 1 6 1 FUSER UNIT a pan washer B 2 0 8 0 1 8 1 Oe eee Taptite bind B M4x12 3 0 840 1 8 1 SIDE COVER SUB L Taptite bind B M4x12 1 0 8 0 1 8 1 MAIN SHIELD COVER PLATE Taptite cup S M3x6 SR 1 0 9 0 05 9 0 5 FG are tightened together Taptite cup S M3x6 SR 2 0 55 0 05 5 5 0 5 ADF UNIT Taptite bind B M4x12 1 0 8 0 1 8 1 HINGE ARM Taptite bind B M4x12 1 0 8 0 1 8 1 HINGE ASSY L Taptite cup S M3x12 1 0 80 1 8 1 Taptite cup B M3x10 2 0 5 0 1 5 1 UPPER DOCUMENT CHUTE ASSY Taptite cup B M3x10 4 0 5 0 1 51 LOWER DOCUMENT CHUTE ASSY Taptite cup B M3x10 2 0 50 1 5 1 DRIVE FRAME ASSY Taptite cup B M3x10 2 0 50 1 5 1 ADF harness unit FG Taptite cup S M3x6 SR 1 0 8 0 1 8 1 ADF MOTOR Taptite bind B M3x6 1 0 8 0 1 8 1 DOCUMENT DRESS COVER Taptite cup B M3x8 1 0 5 0 1 5 1 CORD HOOK Taptite cup B M3x8 2 0 5 0 1 5 1 PANEL UNIT Taptite cup B M3x10 4 0 5 0 1 5 1 PRINTED PANEL COVER Taptite cup B M3x8 4 0 4 0 1 4 1 NCU SHIELD Taptite bind B M4x12 2 0 8 0 1 8 1 Screw pan S P washer 1 0 50 05 540 5 NCU PCB Taptite cup S M3x6 SR 2 0 5 0 1 5 1 SPEARKER COVER Taptite bind B M4x12 1 0 8 0 1 8 1 SIDE COVER R ASSY Taptite bind B M4x12 2 0 80 1 8 1 MAIN PCB ASSY Taptite cup S M3x6 SR 4 0 6 0 1 6 1 JOINT COVER ASSY Tapt
3. E Error code 8A Jam Tray Remove the jammed paper from Tray Paper jam in Tray 1 T1 It is detects by the registration front sensor User Check e Check if the paper is jammed in the tray If jammed remove it e Adjust the paper guide corresponding to the paper size e Check if too much paper is loaded in the tray Step Cause Remedy Harness connection failure of Check the harness connection of the 1 registration front sensor PCB registration front sensor PCB ASSY in the ASSY appropriate tray and reconnect it 2 Paper feed roller worn out Replace the paper feed roller Registration front sensor PCB Check the sensor performance following 3 failure the procedure described in Maintenance mode 32 If any problem occurs replace the registration front sensor PCB ASSY 4 Main PCB failure Replace the main PCB ASSY E Error code 8D Cover is open Open the Back cover and remove the jammed paper or close the Fuser Cover Paper jam near paper eject tray When power on it is detects by the eject sensor User Check e Remove the jammed paper near the paper eject tray or the back cover e Close the fuser cover Step Cause Remedy Paper eject actuator not operating Re assemble the paper eject actuator 1 smoothly catching in some Ensure the paper eject sensor operates position smoothly Eject sensor PCB ASSY failure Replace the e
4. Dialing function does not switch between tone and pulse Step Cause Check Result Remedy Connection Are the main PCB and Reconnect the connector 1 between main NCU PCB connected No PCB and NCU correctly PCB NCU PCB Is the problem solved Replace the NCU PCB 2 after replacing the NCU Yes ASSY PCB ASSY Main PCB Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY PCB ASSY Confidential 12 OTHERS PROBLEMS E The machine is not turned on or the LCD indication does not appear Step Cause Check Result Remedy Harness Is the harness of the Reconnect the panel PCB connection panel PCB ASSY ASSY harness 1 No failure of panel connected correctly PCB Panel PCB Is the problem solved Replace the panel PCB 2 failure after replacing the panel Yes ASSY PCB ASSY 3 LCD failure Is the problem solved Yes Replace the LCD after replacing the LCD LVPS PCB failure Is the problem solved Replace the LVPS PCB 4 after replacing the LVPS Yes unit PCB unit Main PCB failure Is the problem solved Replace the main PCB 5 after replacing the main Yes ASSY PCB ASSY E The fan does not work Step Cause Check Result Remedy Harness Is the harness of the fan Reconnect the harness of 1 connection motor 60 ASSY No the fan motor 60 ASSY failure of the fan connected correctly correctly motor
5. E Internal laser radiation Maximum radiation power 10 mW Wave length 780 800 nm Laser class Class 3B xi Confidential SAFETY INFORMATION E Caution for Laser Product WARNHINWEIS fur Laser drucker CAUTION When servicing the machine and it is operated with the cover open the regulations of VBG 93 and the performance instructions for VBG 93 are valid CAUTION In case of any trouble with the laser unit replace the laser unit itself To prevent direct exposure to the laser beam do not try to open the enclosure of the laser unit ACHTUNG Im Falle von St rungen der Lasereinheit mu diese ersetzt werden Das Geh use der Lasereinheit darf nicht ge ffnet werden da sonst Laserstrahlen austreten k nnen lt Location of the laser beam window gt eE 71 JS C E Additional Information When servicing the optical system of the machine be careful not to place a screwdriver or other reflective object in the path of the laser beam Be sure to take off any personal accessories such as watches and rings before working on the machine A reflected beam though invisible can permanently damage the eyes Since the beam is invisible the following caution label is attached on the laser unit D ANGER INVISIBLE LASER RADIATION WHEN OPEN AND INTEALOCK DEFEATED AVOID DIRECT EXPOSURE TO BEAM CLASS 3B LASER P
6. Paper tray ground terminal of Paper tray Bottom surface Confidential E White vertical streaks User Check e Clean the scanner windows of the laser unit with a soft lint free cloth e Replace the toner cartridge with a new one e Check the machine s environment High temperature and high humidity conditions can cause this problem e Damp wet paper might be used Try to change to freshly unpacked E White horizontal streaks User Check paper e Check there is no dust in the gap between the toner cartridge and drum frame Step Cause Check Result Remedy Condensation Has condensation Try to print several pages 1 occurred inside the Yes leave the machine 2 machine hours to allow it to reach room temperature 2 Dirt on scanner Is the scanner windows Yes Clean the scanner windows dirty windows 3 Transfer failure Is the transfer roller Yes Replace the drum unit scratched Scanner window Is the problem solved Replace the laser unit 4 of laser unit after replacing the laser Yes failure unit e Check that the appropriate media type is selected in the printer driver The problem may disappear by itself Try printing multiple pages to clear this problem especially if the machine has not been used for a long time e The drum unit may be damaged Replace the drum unit with a new one Step Cause Check Result Remedy Toner cart
7. Print Unable 7B See Troubleshooting and routine maintenance chapter in User s Guide Main PCB failure Step Cause Remedy 1 Main PCB failure Replace the main PCB ASSY 1 13 Confidential E Error code 7D Open the front cover according to the label Drum Error then clean the corona wire of drum unit Dirt on drum unit User Check e Clean the corona wire of the drum unit e Replace the drum unit with a new one Step Cause Remedy 1 Dirt or dust on drum unit electrodes Clean the electrodes on the drum unit Refer to Fig 1 1 HVPS PCB failure Replace the HVPS PCB ASSY Main PCB failure Replace the main PCB ASSY E Error code 7F Fax received Size mismatch Set correct paper size in menu Fax paper setting mismatch The setting paper becomes besides the A4 Letter Legal Folio User Check e Set the A4 Letter Legal Folio using the paper size setting in menu Step Cause Remedy 1 Main PCB failure Replace the main PCB ASSY E Error code 80 Reload correct paper Size mismatch then press Start Fax paper size is incorrect The registration rear sensor detected the paper that is smaller than the letter size User Check e Set the paper of A4 or LETTER size on the paper tray Step Cause R
8. 5 22 Confidential E Cover page sample FAX TRANSFER COVER PAGE NO OF JOBS 001 TOTAL PAGE S 001 lt __ NAME BROTHER p FAX 052 824 2330 e TEL E TIME 01 02 2004 22 21 lt 7j 8C 11 lt B0403261682 x U0404221449 VER lt G 1234567898 lt Fig 5 8 E End page sample FAX TRANSFER END PAGE NO OF JOBS 001 TOTAL PAGE S 81 NAME BROTHER FAX 052 824 23308 lt _ _ TEL MACHINE STATUS 1 AF 0401022216 lt MACHINE STATUS 2 43 0401022216 lt MACHINE STATUS 3 48 04010222156 lt MACHINE STATUS 4 AF 0401022017 lt MACHINE STATUS 5 43 0481022017 lt MACHINE STATUS 6 48 0401022017 lt MACHINE STATUS 7 AF 0401011756 lt MACHINE STATUS 8 43 0401011756 lt MACHINE STATUS 9 48 0401011756 lt Fig 5 9 5 23 Job number Total number of pages to be transferred Station ID registered in the sender equipment FAX number of the sender equipment Telephone number of the sender equipment Transfer start date Model code Boot ROM info ROM info Serial number Job number Total number of pages transferred Station ID registered in the sender equipment FAX number of the sender equipment Telephone number of the sender equipment Error codes Confidential 1 4 13 Fine Adjustment of Scan Start End Positions Function code 54 lt Function gt
9. Code 1 Code 2 Causes Password plus lower 4 digits of telephone number not 63 01 compatible 63 02 Password not correct 63 03 Polling ID not correct 7 DCN reception Code 1 Code 2 Causes 74 DCN received 8 TCF transmission reception Code 1 Code 2 Causes 80 01 Fallback impossible 9 Signal isolation Code 1 Code 2 Causes 90 01 Unable to detect video signals and commands within 6 seconds after CFR is transmitted 90 02 Received PPS containing invalid page count or block count 10 Image signal reception Code 1 Code 2 Causes AO 03 Error correction sequence not terminated even at the final transmission speed for fallback AO 11 Receive buffer empty 5 second time out AO 12 Receive buffer full during operation except receiving into memory AO 13 Decoding error continued on 500 lines or more AO 14 Decoding error continued for 10 seconds or more AO 15 Time out 13 seconds or more for one line transmission AO 16 RTC not found or carrier OFF detected for 6 seconds AO 17 RTC found but no command detected for 60 seconds or more AO 19 No video data to be sent A8 01 RTN PIN or ERR received at the calling terminal A9 01 RTN PIN or ERR received at the called terminal AA 18 Receive buffer full during receiving into memory Available in German models only 1 49
10. Document scanner unit i S 3 52 Confidential 8 12 4 PANEL PCB ASSY 1 Release the Hook to remove the Panel PCB ASSY from the Panel unit 2 Release the Lock to remove the FFC from the Panel PCB ASSY Panel PCB ASSY o Hook Panel unit Fig 3 49 Note e After disconnecting the flat cable s check that each cable is not damaged at its end or short circuited e When connecting the flat cable s do not insert it at an angle After insertion check that the cable is not at an angle 8 12 5 RUBBER KEYS L R 1 Remove the Rubber keys R and the Rubber keys L from the Panel unit wd x Rubber keys L f Rubber keys R p Panel unit Fig 3 50 3 53 Confidential 8 12 6 LCD 1 Release the Hook to remove the Back light guide from the Panel unit 2 Remove the Diffusion film from the Panel unit 3 Remove the LCD from the Panel unit Back light guide 3 ee T f Diffusion film Panel unit Fig 3 51 8 12 7 PRINTED PANEL COVER 1 Remove the four Taptite cup B M3x8 screws and then remove the Printed panel cover from the Panel unit Taptite cup B M3x8 Taptite cup B M3x8 3 54 Confidential 8 12 8 ADDRESS LABEL 1 Remove the Address label from the Panel unit Address label Panel unit Fig 3 53 3 55 Confidential 8 13 PULL ARM L R 1 Remove the Pull arm spring ADF L and the Pull arm L from the Joint cover 2 Remove the Pull arm spr
11. Step Cause Check Result Remedy Ring delay Ring delay is set to 0 Change the ring delay 1 Yes settings to another value 2 Ring volume Ring volume is set to Yes Change the ring volume OFF setting to another value Connection Are the main PCB and Reconnect the connector 3 between main NCU PCB connected No PCB and NCU correctly PCB Speaker Is the problem solved Replace the Speaker 4 after replacing the Yes speaker NCU PCB Is the problem solved Replace the NCU PCB 5 after replacing the NCU Yes ASSY PCB ASSY Main PCB Is the problem solved Replace the main PCB 6 after replacing the main Yes ASSY PCB ASSY Confidential Speaker is silent during on hook dialing Step Cause Check Result Remedy Connection Are the main PCB and Reconnect the connector 1 between main speaker connected No PCB and correctly speaker Speaker Is the problem solved Replace the Speaker 2 after replacing the Yes speaker Connection Are the main PCB and Reconnect the connector 3 between main NCU PCB connected No PCB and NCU correctly PCB Connection Are the main PCB and Reconnect the connector 4 between main control panel PCB No PCB and control connected correctly panel PCB NCU PCB Is the problem solved Replace the NCU PCB 5 after replacing the NCU Yes ASSY PCB ASSY Main PCB Is the problem solved Replace the main PCB 6 after replacing the main Yes ASSY PCB ASSY
12. lt a Joint cover 3 60 Confidential 8 17 BATTERY ASSY 1 Disconnect the connector and then remove the Battery ASSY from the Joint cover Connector s i Battery ASSY 7 Joint cover Fig 3 60 CAUTION e There is a danger of explosion if the battery is incorrectly replaced e Do not disassemble or recharge the battery e Do not dispose of the battery in fire e Used batteries should be disposed of according to the local regulations 3 61 Confidential 8 18 SIDE COVER R ASSY 1 Remove the two Taptite bind B M4x12 screws 2 Release the Hook to remove the Side cover R ASSY from the Main body Hook Side cover R ASSY Fig 3 61 3 62 Confidential 8 19 REGISTRATION GROUNDING SPRING 1 Remove the Registration grounding spring from the Main body a lt Left side gt Registration grounding spring Fig 3 62 3 63 Confidential 8 20 ROLLER HOLDER ASSY 1 Release the Boss of the Roller holder ASSY from the Link arm 2 Press the Rib of the Paper feed frame then slide the Separation R shaft bush 3 Remove the Roller holder ASSY from the Main body Separation R shaft bush Roller holder ASSY Fig 3 63 3 64 Confidential Assembling Note When assembling the Roller holder ASSY to
13. Filter ASSY en Registration rea S sensor PCB ASSY Inner chute ASSY Registration front sensor PCB ASSY i ee A x y wa A a Wireless LAN Main PCB ASSY High voltage PS PCB ASSY Eject sensor PCB ASSY S Drive sub ASSY gt Ne one ene POBASSY e PT sensor holder be Toner LED PCB ASSY 4 Roller holder DEV joint T1 solenoid N ASSY PCB a ASSY LED holder ver Cover sensor harness ASSY PSA Ss T1 solenoid Rubber foot RA ap PERE i j Paper Sy solenoid lever stopper L Lr Paper Registration solenoid Fig Ref 1 1 1 2 Confidential E ADF FB part Gear cover see Panel dress cover SF ADF cover SO Address label e 183 EOE a C oe Panel unit See Separation rubber wa LCD lt a ez ADF plate spring Diffusion film x g Back light guide a Z SO mer Rubber key R Upper document chute ASSY YD Rubber key L eee Pressure roller ASSY EC Pressure roller spring NW F lt aa Hinge panel PCB ASSY TNS R Hinge arm Document stopper Document dress cover Document cover sub ASSY Cord hook Drive frame ASSY Actuator R Actuator L xa S v lt w ADF harness unit ADF motor U ES Gr NNN ADF sensor N PAN 3 we Wi harness holder i PCB ASSY Lower document chute ASS Document scanner unit Fig Ref 1 2 1 3 Confidential 1 3 Initial Check Check the following items before attempti
14. Printout of the stored image data of an unsent document 0 No 1 Yes onto an error report Erasure of the stored image data of an unsent document at the time of the subsequent in memory message transmission Not used e Selector 1 Printout of the stored image data of an unsent document onto an error report This selector determines whether or not to print out the 1st page image data of a document onto the error report if the document image data stored in the temporary memory cannot be transmitted normally Selector 2 Erasure of the stored image data of an unsent document at the time of the subsequent in memory message transmission If in memory message transmission fails repeatedly when selector 1 is set to 1 the temporary memory will be occupied with image data Setting selector 2 to 1 will automatically erase the stored 1st page image data of an unsent document at the time of the subsequent in memory message transmission only when recording paper or toner runs out App 1 42 Confidential lt WSW38 gt Selector No Function Setting and Specifications 2 O 0 Automatic 1 Automatic 0 1 0 Fixed to 4 points 1 1 Fixed to 16 points Setting of the equalizer Sending level of guard tone at phase 2 0 Normal 7 db 1 Normal Stepping down the transmission speed at fallback each Ope 4g bps dea eg ORs No 5 6 0 0 For higher transmission speed than the current setting Automatic cont
15. lt Function gt Exit from the Maintenance Mode lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press the 9 button twice in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 99 appears on the LCD and then press the OK button 2 The machine exits from the maintenance mode and returns to the ready state 5 34 Confidential 2 1 OTHER SERVICE FUNCTIONS User Maintenance Mode This section describes what the end user should do when replacing the consumable parts Resetting the drum counter The printed image may deteriorate when using the drum unit to a certain degree The machine detects how much the drum unit is used with the drum counter and the Drum End Soon appears on the LCD when the drum unit life is nearly at the end of its life to indicate to the end user that the drum unit life reaches the end of its life soon in order to prevent the printed image defects due to drum unit deterioration The machine does not provide the function which resets the drum counter automatically when the drum unit is replaced with a new one If replacing the drum unit with a new one without resetting the drum counter the counted value of the old drum unit is used continuously and remain appears on the LCD When replacing the drum unit with a new one it is required to reset the drum counter following the steps below lt Procedure gt 1 Open the front
16. App 1 13 Confidential lt WSW09 gt Selector No Function Setting and Specifications 1 Frame length selection 0 256 octets 1 64 octets 2 Use of non standard commands 0 Allowed 1 Prohibited No 3 4 0 0 4 times No of retries 0 1 3 times 1 0 2 times 1 1 1 times T5 timer 0 300 sec 1 60 sec T1 timer 0 35sec 1 40 sec No 7 8 0 0 55 sec in U S A and Canadian Timeout for response from the models called station in automatic 60 sec in other models sending mode O 1 140 sec 1 0 90 sec 1 1 35 sec Note Selectors 1 through 5 are not applicable in those models which do not support ECM e Selector 1 Frame length selection Usually a single frame consists of 256 octets 1 octet 8 bits For communications lines with higher bit error rate however set selector 1 to 1 so that the machine can divide a message into 64 octet frames Remarks The error correction mode ECM is a facsimile transmission manner in which the machine divides a message into frames for transmission so that if any data error occurs on the transmission line the machine retransmits only those frames containing the error data Selector 2 Use of non standard commands If this selector is set to 0 the machine can use non standard commands the machine s native mode commands e g NSF NSC and NSS for communications If it is set to 1 the machine will use standard commands only Selectors 3 and 4 No of retr
17. MAINTENANCE 13 appears on the LCD and then press the OK button The machine displays 00 on the LCD 2 Press the buttons in the order designated in the illustration shown below The LCD shows the corresponding number in decimal notation each time a button is pressed Check that the displayed number is correct by referring to the illustration below If a button is pressed out of order the machine displays the INVALID OPERATE on the LCD To return to the status ready to accept button entry for operational check press the Stop Exit button 3 After the last number button is pressed the machine beeps for one second and returns to the initial stage of the maintenance mode To terminate this operation press the Stop Exit button The machine beeps for one second and returns to the initial stage of the maintenance mode E MFC7840W 7840N 7450 7440N 7340 7320 ye Hook nscclitionts bau j MFC Menu Reports e Sa Se m hf 9 arg SI RUD copy Q o P JES Scan Copy Ciear Back OK Secure Cancel Print o 7 es 4 O A Search Speed Dial A a E DCP7045N 7040 7030 E Enlarge Number DCP 7040 Clear AR Options Reduce Contrast of Copies P Back EX8 OK a Job Cancel OKOK J 00 ao 2 Fig 5 6 5 14 Confidential 1 4 9 ROM Version Check Function code 25 lt Function gt This function allows you to check the management information of the software programs such as versio
18. SPEAKER BATTERY 00s 00s MAIN PCB ASSY 00s 00s REGISTRATION SOLENOID 00s 00s T1 SOLENOID 00s 00s RUBBER FOOT 00s 00s SEPARATION PAD ASSY SEPARATION PAD SPRING 00s 00s EJECT ROLLER ASSY 1 BUSH oos oos NCU PCB 00s 00s MAIN SHIELD PLATE 00s 00s EJECT SENSOR PCB 00s 00s Confidential 8 DISASSEMBLY PROCEDURE E Preparation Prior to proceeding with the disassembly procedure 1 Unplug e the AC cord e the modular jack of the telephone line e the USB cable if connected e the LAN cable if connected e the modular jack of the external telephone set if connected 2 Remove e the Paper tray e the Toner cartridge and Drum unit AC cord Telephone line cord Drum Toner unit N Paper tray unit Fig 3 7 3 16 Confidential 8 1 SEPARATION PAD ASSY 1 Lift up the Separation pad ASSY 2 Release the Boss to remove the Separation pad ASSY from the Paper tray unit 3 Remove the Separation pad spring from the Paper tray unit Paper tray ASSY a Separation pad spring 4 XS Fig 3 8 3 17 Confidential 8 2 FRONT COVER ASSY 8 2 1 FRONT COVER ASSY 1 Open the Front cover ASSY 2 Release the Hook to remove the DEV joint link from the Front cover ASSY Front cover ASSY DEV joint link 3 18 Confidential 3 Release the Hook of the Front cover ASSY from the Front cover top 4 Remove the Boss of the Front chute ASS
19. fro Taptite cup B M3x10 fm Taptite cup B E M4x12 Taptite cup S Taptite cup S M3x6 SR hw Taptite cup S M3x12 fmm Taptite flat B meae pm Screw pan S P washer Screw pan S P washer M3 5x6 Taptite pan S P washer Taptite pan S P washer S M3x8 im Taptite pan washer Taptite pan washer B M4x14 mm App 4 1 Confidential APPENDIX 5 GLOSSARY E ACRONYMS AND TECHNICAL TERMS In this manual and the Service Manual the manual specific acronyms and technical terms are used in addition to the generally used ones The table below contains typical acronyms and technical terms that are used throughout these manuals APIPA Automatic Private IP Addressing ASIC Application Specific Integrated Circuit ASSY Assembly CN Connector CPU Central Processing Unit dB decibel DEV Development DIMM Dual Inline Memory Module dpi dots per inch EEPROM Electronically Erasable and Programmable Read Only Memory FR Feed Roller FU Fuser HEX Hexadecimal HV High Voltage HVPS High Voltage Power Supply IEEE 1284 Institute of Electrical and Electronic Engineers 1284 IF Interface IPv4 Internet Protocol Version 4 IPv6 Internet Protocol Version 6 LCD Liquid Crystal Display LD Laser Diode
20. 3 after replacing the LVPS Yes unit PCB unit HVPS PCB Is the problem solved Replace the HVPS PCB 4 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 5 after replacing the main Yes ASSY PCB ASSY E Completely blank User Check e Replace the drum unit with a new one e Replace the toner cartridge with a new one Step Cause Check Result Remedy Developing bias Are the electrodes on Clean both electrodes 1 voltage the drum unit and Yes Refer to Fig 1 1 Fig 1 2 conduction machine body dirty failure Scanner harness Is the scanner harness Reconnect the scanner 2 of the laser unit of the laser unit No harness of the laser unit connection connected securely failure Laser unit failure Is the problem solved Replace the laser unit 3 after replacing the laser Yes unit HVPS PCB Is the problem solved Replace the HVPS PCB 4 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 5 after replacing the main Yes ASSY PCB ASSY Confidential E Image distortion TS Step Cause Check Result Remedy Laser unit not Is the laser unit Assemble the laser unit assembled assembled into the correctly and secure the 1 correctly machine securely No screw Check if there is no gap Incorrect Is the problem solved Replac
21. Fig App 3 1 App 3 1 Confidential lt Location gt The back surface of the machine Serial label Fig App 3 2 The inside surface of the Front cover 0 ul Serial label Fig App 3 3 App 3 2 Confidential E Laser unit serial label xyy lt How to Read gt SsAfnpcusaasnsx SDA fn p C H HHHHHH xx yy LUS Model distinction 4 L Y delay Frame manufacturer X delay and mold distinction T1 the 1st mold ial Y3 the 3rd mold sonalyumpar Polygon motor distinction Inspection machine Fig App 3 4 lt Location gt Serial label Drive sub ASSY 2 to 10mm D Serial label Fig App 3 5 App 3 3 Confidential E Toner cartridge and Drum unit serial label in common lt How to read gt brother C7 JIMQQOQO01A Month of manufacture 4 A January E May J September B February F June K October Assembly line number C March G July L November PRIE D April H August M December Serial number 6 digit Toner filling amount A to D 5 Year of manufacture Manufacturing factory No 7 2007 8 2008 Fig App 3 6 lt Location gt Drum unit Serial label DL Serial label Fig App 3 7 Fig App 3 8 App 3 4 Confidential APPENDIX 4 SCREW CATALOGUE Taptite bind B a i Taptite bind B M4x12 Taptite cup B Taptite cup B M3x8
22. If the machine called station detects dial tone 400 Hz continuously or busy tone 400 Hz intermittently exceeding the detection level specified by these selectors for the period specified by selectors 1 through 4 on WSW335 then it interprets the calling station as being disconnected The machine stops TAD recording and disconnects the line e Selector 8 Density adjustment of the copy for text mode When copy the thin document thicken the contrast and print it App 1 35 Confidential lt WSW31 gt Selector No Function Setting and Specifications 1 Not used Default reduction rate for failure of automatic reduction during 0 100 recording Not used Do not disturb this selector Minimum ON and OFF duration of ringer signals effective in 0 130ms 1 90 ms distinctive ringing Not used Not used Drum life indication Note Selector 5 is applicable only to the U S A models Selector 2 Default reduction rate for failure of automatic reduction during recording This selector sets the default reduction rate to be applied if the automatic reduction function fails to record one page data sent from the calling station in a single page of the current recording paper If it is set to 0 the machine records one page data at full size 100 without reduction if it is set to 1 the machine records it at 70 size Selector 5 Minimum ON and OFF duration of ringer signals effect
23. Rise R134 R136 Riag P57 A142 R137 oom TR J8 oo Confidential E LVPS PCB Circuit Diagram 100V z5 c5 o fal z 6 z be a d Ilo 9 l 9 D z m R3 R2 z2 VV z N z c1 z R73 A72 p71 D 38 34 z4 J ie gt I D l o Ipe N Ve ee E et ver8 i Seg o l NI w c104 o f R43 w D120 D 44 R121 g R DAT VW z DHH A122 3 4 ane A131 D43 D42 w R123 VW A132 R124 D13 D11 i vW vW K R125 R133 Di2 D10 PC3 mw R135 R137 Ic101 pet l A Z50 IN La ig Mx E 8 R111 R118 ca _ __ 2 a A143 N R127 7 5 o w Ww R23 TRAA R116 w Lwe giti gag c22 PC3 4 R141 L WW i Pc2 R22 R21 R20 R143 R142 VW VW aw C141 C8 fe pce 7 5 R311 9 A a QO yX OF o N in ano Be ano 8 ssoxo ousz 8 uo yeau TOTNO 6 2 Confidential m LVPS PCB Circuit Diagram 200V cB z c5 I4 o C16 EER gt ea i z2 P3 R2 VW w e e v cr 4 R73 R72 P71 eA Ww e Z1 M M E Se N iy eT gt 2 4 N F9 z aa iy ae fs o A G z c o2 Fm 72 8 G Se Ys 78 g 0 w z c101 D13 D11 Si Ki D12 D10 J N A rt MI N R121 J vA a6 R122 t xt R123
24. download the FAX again lt What to do when replacing the main PCB gt e Rewriting the firmware Main Program e EEPROM Parameter Initialization of Main PCB Maintenance Mode Code 01 e Operational Check of Control Panel Button Maintenance Mode Code 13 e Operational Check of Sensors Maintenance Mode Code 32 e Acquisition of White Level Data and Set the CIS Scanner Area Maintenance Mode Code 55 e EEPROM Customizing of Main PCB Maintenance Mode Code 74 e Setting the serial number e Inputting the adjusted value of the laser scanner e Setting the toner cartridge type e Backup to the Main PCB of the Wireless LAN PCB Information MFC7840W only lt What you need to prepare gt 1 Computer Windows XP or later Create folder for example ALL2 folder on the C drive 2 Firmware Main Program LZXXXxX First six digits are the parts number of the LZXXXX_ upd firmware Alphabet represents the revision of the firmware 3 Maintenance Tool MAINTE zip Copy it into the ALL2 folder that has been created on the C drive Extract the copied file and run brmainte exe file by double clicking 4 USB cable one piece 5 Download Utility FILEDG32 EXE Copy it into the ALL2 folder that has been created on the C drive 6 Brother Maintenance USB Printer Driver Copy it into the ALL2 folder that has been created on the C drive Extract the copied file Refer to the following pages for the next pro
25. 0 A 0 A 0 5 cycle 0 A 1 B 1 0 cycle 1 A 0 A 1 5 cycle 1 B 1 B 2 0 cycle e Selectors 2 through 4 Detection time length of PABX dial tone required for starting dialing Upon detection of the PABX dial tone for the time length set by these selectors the machine starts dialing These selectors are effective only when both selectors 6 and 7 are set to 1 Detection App 1 6 Confidential e Selectors 6 and 7 Dial tone detection in PABX These selectors activate or deactivate the dial tone detection function which detects a dial tone when a line is connected to the PABX Setting both of these selectors to 1 activates the dial tone detection function so that the machine starts dialing upon detection of a dial tone when a line is connected Other setting combinations deactivate the dial tone detection function so that the machine starts dialing after the specified WAIT 3 5 5 0 or 7 0 sec without detection of a dial tone when a line is connected App 1 7 Confidential lt WSW04 gt Selector No Function Setting and Specifications Earth function in transfer facility i Not used Provided 1 Not provided 3 0 350 and 440 Hz 1 440 and 480 Hz 0 480 and 620 Hz 1 480 and 620 Hz A Dual tone detection frequency in ICM recording B C C Dual tone detection sensitivity in ICM recording Normal 1 High Length of time added to time designated by selectors
26. 0 Microphone level 0 with echo cancellation OFF Cordless handset microphone O 1 Microphone level 1 with level and echo cancellation ON echo cancellation ON OFF Not used 0 Microphone level 2 with echo cancellation ON Microphone level 3 with echo cancellation ON 16 Hz 20 Hz 24 Hz 28 Hz 32 Hz 16 Hz 16 Hz 16 Hz External telephone pseudo ringing signal frequency setting Not used OO f 000 or 0 0 00 0 Caller ID number display display after the machine has returned to TEL mode from FAX mode Not used Dial display during transmission Not used e Selectors 4 through 6 External telephone pseudo ringing signal frequency setting Not used External telephone ringing sound can be changed e Selector 7 Caller ID number display display continued after the machine has returned to TEL mode from FAX mode Not used If this function is selected the caller ID number number display will continue to be displayed even after the TEL gt FAX gt TEL mode changes e Selector 8 Dial display during transmission Not used If this selector is set to 0 the dial number of the fax transmission destination will be displayed until such time as the fax transmission has been completed App 1 57 Confidential lt WSW53 gt Selector No Function Setting and Specifications 1 Not used 2 No 3 4 Caller ID number display FSK 0 0 0ms r
27. 1 Disconnect the Connector Housing part Connector j f ang Fuser unit Fig 3 20 CAUTION Pull out the Connector from the Housing part of the Main body left side 2 Disconnect the two Connectors from the Eject sensor PCB ASSY Fuser unit Connector Eject sensor PCB ASSY 3 28 Confidential 3 Remove the two Taptite pan washer B M4x14 screws and then remove the Fuser unit from the Main body Taptite pan washer B M4x14 Fig 3 22 3 29 Confidential 8 8 CORNER COVER 1 Remove the Taptite bind B M4x12 screw 2 Release the Hook to remove the Corner cover from the Main body Mf Taptite bind B M4x12 A Corner cover Fig 3 23 3 30 Confidential 8 9 8 9 1 SIDE COVER L ASSY SIDE COVER SUB L SIDE COVER L ASSY 1 Remove the two Taptite bind B M4x12 screws 2 Release the Hook to remove Side cover L ASSY from the Main body Taptite bind B M4x12 Ss a s Pott x Ss Taptite bind B M4x12 Hook Side cover LASSY Fig 3 24 Confidential 8 9 2 SIDE COVER SUB L 1 Remove the Taptite bind B M4x12 screw 2 Release the Hook to remove the Side cover sub L from the Side cover L ASSY Taptite bind B M4x12 Side cover sub L Side cover L Fig 3 25 8 10 MAIN SHIELD COVER PLATE 1 Remove the two Taptite cup S M3x6 SR screws and then remove the two FG h
28. 17 5 sec wait 21 0 sec wait 25 0 sec wait Detection Without wait 1st dial tone detection 0O0 00NPR oO O70 0 Max pause time allowable for remote ID code detection oO 2 sec 1 1 sec 6 0 No detection 5 Busy tone detection in 9 ae O 1 Detection only after dialing 1 1 auto matic sending mode g 0 No detection 1 Detection before and after dialing Busy tone detection in f oe 0 Yes 1 No auto matic receiving mode Not used Note Selectors 5 through 7 are not applicable in those countries where no busy tone detection is supported e Selectors 1 through 3 1st dial tone detection These selectors activate or deactivate the 1st dial tone detection function which detects the 1st dial tone issued from the PSTN when a line is connected to the PSTN Setting all of these selectors to 1 activates the dial tone detection function so that the machine starts dialing upon detection of a dial tone when a line is connected However in those countries which support no dial tone detection function e g in the U S A setting these selectors to 1 makes the machine start dialing after a WAIT of 3 5 seconds For the detecting conditions of the 1st dial tone refer to WSW07 and WSWO8 Other setting combinations deactivate the dial tone detection function so that the machine starts dialing after the specified WAIT 3 5 7 0 10 5 14 0 17 5 21 0 or 24 5 seconds wit
29. 2 8 sec wait Redial Pause button setting and 2nd dial tone detection both 2nd dial tone detection in DP and push button PB dialing system 2nd dial tone detection only in pulse dialing DP system 2nd dial tone detection both in DP and push button PB dialing system 50 ms 250 ms 500 ms 620 ms 800 ms 1 5 sec 2 0 sec 2 5 sec Detection of international tone a OOF HTH OoOOUlUm o 0 0 00 No of 2nd dial tone detection cycles 1cycle 1 2 cycles Allowable instantaneous interrupt during reception of 2nd 30 ms 1 50 ms dial tone Note Selectors 4 through 8 are not applicable in those countries where no dial tone detection is supported e g U S A App 1 10 Confidential e Selectors 1 through 3 Redial Pause button setting and 2nd dial tone detection Selectors 1 2 3 0 0 0 No wait is inserted even if the Redial Pause button is pressed O O 1 If you press the Redial Pause button during dialing the machine will 010 insert wait as defined in the above table 011 If the Redial Pause button is pressed repeatedly the machine inserts the specified wait multiplied by the number of depressions It applies 100 also in hook up dialing 1 0 1 When these selectors are set to 1 0 1 110 Each time you press the Redial Pause button in dialing the machine ae will wait for the 2nd dial tone to be sent via the communications line regardless of pulse dialing or ton
30. 3 43 3 48 Confidential 8 11 15DOCUMENT DRESS COVER 1 Remove the Taptite cup B M3x8 2 Release the Boss of the Document dress cover from the Document cover sub ASSY 3 Release the Hook to remove the Document dress cover from the Document cover sub ASSY Hook Document dress cover Document cover sub ASSY 3 49 Confidential 8 12 DOCUMENT SCANNER UNIT 8 12 1 DOCUMENT SCANNER UNIT 1 Disconnect the two connectors and FFC from the Main PCB ASSY Connector Lor 4 Main PCB ASSY Fig 3 45 Note e After disconnecting the flat cable s check that each cable is not damaged at its end or short circuited e When connecting the flat cable s do not insert it at an angle After insertion check that the cable is not at an angle 3 50 Confidential 2 Open the Document scanner unit 3 Remove the Pull arm L and the Pull arm R from the Boss of the Document scanner unit 4 Remove the Document scanner unit from the Main body Document scanner unit 3 51 Confidential 8 12 2 CORD HOOK 1 Remove the two Taptite cup B M3x8 screws and then remove the two cord hooks from the Document scanner unit Document scanner unit m Cord hook Cord hook Taptite cup B M3x8 Fig 3 47 8 12 3 PANEL UNIT 1 Remove the four Taptite cup B M3x10 screws 2 Release the Hook to remove the Panel unit from the Document scanner unit 3 Disconnect the connector from the Panel PCB ASSY
31. 3 and 4 on the WSW 24 time between Not added 1 4 seconds added CML ON and pseudo ring backtone return Break time length for flash function 002 00N 9 O SOS O Note e Selectors 1 and 5 through 8 are not applicable in those countries where no transfer facility is supported e Selectors 2 through 4 are applicable to models equipped with built in TADs Selector 1 Earth function in transfer facility Not used This selector determines whether or not the earth function is added to the transfer setting menu to be accessed by the function switch e Selectors 2 and 3 Dual tone detection frequency in ICM recording If the machine detects either of the frequencies set by these selectors in ICM recording it disconnects the line For example if these selectors are set to 0 0 the machine disconnects the line upon detection of 350 Hz or 440 Hz e Selector 4 Dual tone detection sensitivity in ICM recording Setting this selector to 1 increases the tone detection sensitivity in ICM recording e Selectors 6 and 8 Break time length for flash function These selectors set the break time length This setting is effective only when the flash function is selected for the Search Speed Dial button by using the function switch App 1 8 Confidential lt WSW05 gt Selector No Function Setting and Specifications Z o em 3 5 sec wait 7 0 sec wait 10 5 sec wait 14 0 sec wait
32. ASSY only MEC7840W ssssessssseessssesssssesssssessssteessstesssseesssseeeen 3 66 MAIN POB SS Ose lc Sacra teense nas die sabe cl ans a a R ni 3 67 JOINT COVER ASSY PAPER SUPPORTER o csssssesssssesssssesssseesssseessssecessieessseesssisesees 3 68 HIGH VOLTAGE PS PCB ASSY ciel sti Sen icnbohsldedunnalus dedash chs tncanhaclacletaed 3 70 NEW TONER SENSOR HARNESS ASSY sssesssssessssseessssesssssecsssecsssseesssseessssessssseeeaseess 3 71 FILTER ASSY ausara tenaa B tannin wiaacana O aA 3 72 PASER LOND hese ntnetua ated E EAEE AE ath Wt saat 3 73 v Confidential 8 28 FAN MOTOR 60 UNIT COVER SENSOR HARNESS ASSY TONER LED PCB ASSY 3 75 8 28 1 FAN MOTOR 6O UNIT seis cxeaseinniviricheieentinnisiiiianecadinaiwuis 3 75 8 28 2 COVER SENSOR HARNESS ASSY oo eceeeeeeeeee renee tees eeaeeseeseeeseaeeeeeneas 3 76 8 28 3 TONER LED PCB ASSY 000 eececcenceeene cence eee eeeeeteaeeeseeseaeeseeseaeeseaeseaeesseeseneetegs 3 77 829 LN PS sanieren a Sian alana aiwoateten cease tesa eerie 3 78 8 29 1 LVPS PCB UNIT isisdincisiivnci udiietisieies nannies daveie ANa pentane ENA 3 78 8 292 LV SHIELD PLATE 2 ccscciisicsesetsntavaccandees cneoadscacecasstertcrecsaa ta seevadeeeeneednevbevetaaseeasits 3 80 8 30 REGISTRATION FRONT SENSOR PCB ASSY ooo een eter etree tee eeeeteeenneeseaeen 3 81 8 31 REGISTRATION REAR SENSOR PCB ASSY 00 ee eee een eenee eee eeneeteaeeeeeteeeeneeeeaeees 3 85 8 32 DRIVE SUB ASSY sisi scents sirnnesieensedeaiati
33. Eject roller 2 Is each pinch roller of the Replace the inner chute malfunction inner chute ASSY ASSY 5 attached to each eject No roller 2 of top cover ASSY properly Paper eject sensor Is the problem solved Replace the paper eject 6 PCB failure after replacing the paper Yes sensor PCB eject sensor PCB 1 24 Confidential 3 4 3 5 3 6 Dirt on Paper User Check e Check if the paper is loaded into the paper tray correctly e Turn over the stack of paper in the paper tray or try rotating the paper 180 in the paper tray Step Cause Check Result Remedy Fuser unit dirty Is there dirt around the Clean the entrance of the entrance of the fuser Yes fuser unit 1 unit Is the pressure roller Yes Clean the pressure roller ASSY dirty ASSY Wrinkles or creases User Check e Check if the paper is loaded into the paper tray correctly e Turn over the stack of paper in the paper tray or try rotating the paper 180 in the paper tray Step Cause Check Result Remedy Fuser unit dirty Is there dirt around the Clean the entrance of the 1 entrance of the fuser Yes fuser unit unit Fuser unit failure Is the problem solved if Replace the fuser unit 2 new fuser unit is Yes replaced Waves in the paper folds in the paper at the eject roller 2 User Check e Check that the problem is solved if new paper is used Step Cause Check
34. Function Code 32 cccccescceeeseeeeeeeeeeeeeeeeteeeteaes 5 16 1 4 11 PC Print Function setting Function code 32 cccccccceeeeeeeeeeeeeeeeeeeeeeeeeseeeseaes 5 18 1 4 12 Received Data Transfer Function Function code 53 MFC 7840W 7840N 7450 7440N 7340 7320 only ccecceeeeeeeeeteeeeeeeeeeseeeteaees 5 22 1 4 13 Fine Adjustment of Scan Start End Positions Function code 54 seses 5 24 1 4 14 Acquisition of White Level Data Function code 55 ccccccceeeeeeeeeeseeeeeeseeetens 5 26 1 4 15 Paper Feeding and Ejecting Test Function Code 67 c ccceeeeeseeeeeeeeeeeseeeeeeaes 5 26 1 4 16 EEPROM Customizing Function Code 74 cccccccccesceeeeeeeeeeseeeteneeeseseeeeeeeesaes 5 27 1 4 17 Operational Check of Fans Function Code 78 ccccccsseeeseeeeeeeeeeeeteeeesneeessaes 5 29 1 4 18 Display of the Machine s Log Information Function code 80 scceeeeeeeees 5 31 1 4 19 Error Code Indication Function code 82 o eccecececeeeeeeeteeeeeeeeeeeneeeeeeeeeeeeeesaes 5 33 1 4 20 Output of Transmission Log to the Telephone Line Function code 87 only MFC7840W 7840N 7450 7440N 7340 7320 cceccceeeeeeeeeeeeeeteneeteeeeeeeeees 5 33 1 4 21 Exit from the Maintenance Mode Function Code 99 s es 5 34 2 OMRMER SERVICE FUNG HONS iraro besser gece attt evesceeny gute emesis ticesanedeneet 5 35 2 1 User Maintenance Mode ccceccceceesecceeeeeeeeeeeeeeeeneeeeesaeaeeeesesaaeeeeeeeeeaneessenseeaeeeee
35. Header for sent mail This selector set whether add the header station ID to the image data of the reading sent mail only with LAN model e Selector 8 JPEG coding Setting this selector to 0 disables the machine from sending receiving JPEG color images and from receiving JPEG monochrome images App 1 48 Confidential lt WSW44 gt Selector No Function Setting and Specifications 23 45 0 0 O O Max 0 O O 1 1 cpm l 1 1 31cpm Copying speed control Not used Obtained compensation data ineffective Effective time length of the white 1 min level compensation data 3 min obtained beforehand 5 min Not used 10 min 15 min 20 min 30 min Note Selectors 6 through 8 are applicable to flat head type models only e Selectors 6 through 8 Effective time length of the white level compensation data obtained beforehand Not used These selectors determine how long compensation data obtained beforehand will keep effective App 1 49 Confidential lt WSW45 gt Selector No Function Setting and Specifications Z o w No automatic drawing in 1 sec 2 Sec 3 sec 4 sec 5 sec 6 sec 7 SEC Delay time from when documents are set until the ADF starts drawing them in Not used 0 0 0 0 1 1 1 1 4 0 oorr t o0o _ 00N P EPea 7Oo279 2902309 No correction of reference Periodical correction intervals of voltage during
36. Is the problem solved after Replace the drum unit 1 A Yes replacing the drum unit E Black horizontal stripes User Check unit e Replace the drum unit with a new one Clean the inside of the machine and the corona wire in the drum Step Cause Check Result Remedy Dirt on the Are the electrodes on Clean both electrodes 1 charge electrode the drum unit and Yes Refer to Fig 1 1 Fig 1 2 machine body dirty Paper tray Is the paper tray ground Correct the bending of ground terminal terminal bent which is paper tray ground terminal 2 located in the located in the machine Yes machine body body Refer to Fig 1 6 Toner attached Are the horizontal stripes This problem will disappear by 3 on the develop at 41 0 mm develop Yi printing approximate 10 pages i es roller roller circumference If the same problem occurs intervals replace the toner cartridge Scratch and Dirt Are the horizontal stripes Replace the drum unit 4 on the exposure at 75 0 mm exposure Yes drum drum circumference intervals Scratch and Dirt Are the horizontal stripes Replace the fuser unit 5 on the heat roller at 78 5 mm heat roller Yes circumference intervals HVPS PCB Is the problem solved Replace the HVPS PCB 6 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 7 after replacing the main Yes ASSY PCB ASSY
37. Or O a OERO Not used Base unit start button after cordless handset dialing Invalid Default 1 Valid Not used Note Selectors 1 through 6 are applicable only to models designed for the European market e Selectors 1 through 3 Caller ID judgment voltage to be distinguished from rings Not used If caller IDs cannot be displayed because of confusion with rings due to variations in the voltage increase the judgment voltage However do make sure that the voltage value set by selectors 1 through 3 of this switch is equal to or greater than the value set by selectors 4 through 6 of the same switch e Selectors 4 through 6 Caller ID judgment voltage to be distinguished from reverse polarity voltages Not used If caller IDs cannot be displayed because reverse polarities cannot be detected due to a large difference between line voltages in a reverse polarity condition and in a steady condition increase the judgment voltage However do make sure that the voltage value set by selectors 1 through 3 of this switch is equal to or greater than the value set by selectors 4 through 6 of the same switch Selector 8 Base unit start button after cordless handset dialing Not used Even if the base unit start button is pressed to start a FAX transmission during calling when this selector is in its default state no FAX transmission will occur By using this selector it is possible to make the base unit start but
38. Pattern 1 4 5 5 7 10 Worker Switch WSW Setting 1 4 6 1 5 9 11 Printout of Worker Switch Data 1 4 6 2 5 12 12 Operational Check of LCD 1 4 7 5 13 13 Operational Check of Control Panel Button 1 4 8 5 14 25 ROM Version Check 1 4 9 5 15 32 Operational Check of Sensors 1 4 10 5 16 43 PC print function setting PCL PS 1 4 11 5 18 53 Received Data Transfer Function 1 4 12 5 22 54 Fine Adjustment of Scan Start End Positions 1 4 13 5 24 55 Acquisition of White Level Data 1 4 14 5 26 67 Paper Feeding and Ejecting Test 1 4 15 5 26 74 EEPROM Customizing 1 4 16 5 27 78 Operational Check of Fans 1 4 17 5 29 80 Display of the Machine s Log 1 4 18 5 31 82 Error Code Indication 1 4 19 5 33 87 Output of Transmission Log to the Telephone Line 1 4 20 5 33 91 EEPROM Parameter Initialization 1 4 1 5 3 99 Exit from the Maintenance Mode 1 4 21 5 34 The functions shaded in the table above are user accessible 5 2 Confidential 1 4 1 4 1 Detailed Description of Maintenance mode Functions EEPROM Parameter Initialization Function code 01 91 lt Function gt The machine initializes the parameter user switches worker switches and assurance mode switch settings registered in the EEPROM to the initial values Entering function code 01 initializes almost all of the EEPROM areas but entering 91 does not initialize some areas as listed below Function code i 91 Data item Maintenance m
39. R134 c4 AAA R124 l sd R132 R125 _ Ww R136 R133 AAA 4 R23 TRA1 A137 _ws _ cee pce Ic104 ate R22 R21 R20 gt H K WV e 9 W i Fa R111 A118 W D is n A113 0 R127 VW 9 R116 C111 p12 7 D C8 i Pc2 R311 b ona H uo 3e8y ave ave 8 TOTND 6 3 TW x Z a J Confidential m NCU PCB circuit diagram USA Canada D7 185120 R7 100 ier Lo on Fons roe Ra1 asi0 a ASX 248 908 oN ers 510 LINE D RA 242M C6 R1 120 2W R14 100k c1o2 efa D3 185120 R41 4910 A TLP320 These components 285D D440J 111 R15 150k BA10358 T ch ecis So e221 I Confidential m NCU PCB circuit diagram Europe Asia Oceania China R41 4910 C awia wis erie 1 5k ENC121D 07A anoi Hr pw R13 68k 10k 1 4W K TLP627 ZDA MTZI5 1B if g cI 6c TLP421 Mg 62J RD315 o E 14 tw z0 zD2 mrzgi2 rzg12 TLP320 cure
40. Result Remedy 1 Foreign object Is there a foreign object Yes Remove the foreign object around eject roller 2 around the eject roller 2 Eject roller 2 Is the problem solved Replace the top cover 2 failure after replacing the new Yes ASSY eject roller 2 1 25 Confidential 3 7 Curlin the paper Step Cause Check Result Remedy Fuser unit Is the problem solved Replace the position of the 1 pressure is high after replacing the Yes Pressure roller position of the pressure roller 1 Turn the Nip release lever of right and left to the direction of the arrow 2 Hold and turn the PR stopper plate of right and left 3 Print it again and check that the curl in the paper occurs 4 When there seems to be still the curl replace the position of the pressure roller again NIP RELEASE LEVER PR STOPPER PLATE Fig 1 4 1 26 Confidential 4 TROUBLESHOOTING OF DOCUMENT FEEDING Problems related to document feeding are end user recoverable if following the User Check items If the same problem occurs again follow each procedure in the order of the number 4 1 No Feeding User Check e Check if the document is inserted correctly to the depths of the ADF unit If the document is inserted the LCD indication is changed Step Cause Check Result Remedy Document front Does document front Re assemble document actuator not actuator move front actuator 1 operating smo
41. Sh NI Se 7 gt lt N pe l fo oo _ l Fig 3 94 3 91 Confidential 8 35 TONER SENSOR PCB UNIT ASSY 1 Remove the Taptite bind B M3x10 screw and then remove the Toner sensor PCB unit ASSY from the Main body 2 Remove the PT sensor holder from the Toner sensor PCB unit ASSY PT sensor holder Taptite bind B M3x10 Toner sensor PCB unit ASSY 1 rN Toner sensor PCB unit ASSY Fig 3 95 3 92 Confidential 8 36 REGISTRATION SOLENOID T1 SOLENOID 8 36 1 REGISTRATION SOLENOID 1 Remove the T1 sector gear spring from the T1 gear 38 31 sector 2 Remove the T1 gear 38 31 sector from the Main body 3 Release the Hook to remove the Registration gear 25 terminal from the Main body 4 Remove the Registration differential gear ASSY from the Main body Hook Ds Registration gear t 25 terminal 3 Ss T1 gear 38 31 sector ee Blas M In SMM Lik CAUTION Be careful as the inside gear of the Registration differential gear ASSY is easy to fall out 3 93 Confidential 5 Remove the Registration solenoid lever spring from the Main body and the Registration solenoid lever 6 Remove the Harness from the Guide part of the Main body 7 Remove the Taptite bind B M3x10 screw and then remove
42. These selectors set the ON and OFF time length ranges for busy tone to be detected If more than one selector is set to 1 the ranges become wider For example if selectors 4 and 5 are set to 1 the ON and OFF time length ranges are from 175 to 600 ms App 1 16 Confidential lt WSW12 gt Selector No Function Setting and Specifications Zz 9 1500 ms 500 ms 700 ms 900 ms Min detection period required for interpreting incoming calling signal Cl as OFF Max detection period for 6 sec incoming calling signal Cl being OFF 9 sec 11 sec 800 ms 1000 ms 200 ms 250 ms 150 ms Min detection period required for acknowledging incoming 2 0 1 0 1 4 0 1 7 sec 0 1 6 0 1 calling signal Cl as ON 0 1 Oj oon _00 0 090 Ringer OFF 1 Ringer ON period period Line connection timing Not used 1000 ms in Chinese models Selectors 1 through 4 Min detection period required for interpreting incoming calling signal Cl as OFF Max detection period for incoming calling signal Cl being OFF If the machine detects the OFF state of a Cl signal for the period greater than the value set by selectors 1 and 2 and less than the value set by selectors 3 and 4 it interprets the Cl signal as OFF Selectors 5 and 6 Min detection period required for acknowledging incoming calling signal Cl as ON These selectors set the period required to make
43. This function allows you to adjust the scanning start and end positions with the ADF and FB unit lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 5 and 4 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 54 appears on the LCD and then press the OK button The SCAN START ADJ will appear on the LCD 2 The a ADF W FB will appear after two seconds Select one of them that you want to adjust the start position If you want to adjust the start position of the ADF press A button and if you want to adjust that of the FB unit press W button 3 Press the 1 or 2 button to display the present compensation level for the start position Compensation levels can be adjusted in 11 steps from 5 to 5 mm 4 Press the A button to increase compensation levels and the W button to lower them Press the Stop Exit button so that the machine beeps for one second and returns to the initial state of the maintenance mode without adjusting compensation levels 5 Set the compensation level and press the OK button The ACCEPTED will appear on the LCD One second later the machine A ADF W FB will appear on the LCD 6 Press the Stop Exit button when finish the adjustment The machine beeps for one second and returns to the initial state of the maintenance mode Note The correlation between the scan start end positions and compensa
44. YY hh mm format applies DD is the day MM is the month YY is the last two digits of the year hh is the hour and mm is the minute e Selector 7 Non ring reception Setting this selector to 1 makes the machine receive calls without ringer sound if the Ring Delay is set to 0 App 1 22 Confidential lt WSW18 gt Selector No Function Setting and Specifications Header for fax 0 With header 1 Without header No 2 3 O 0 40 sec 1 0 sec No detection 0 1 0 5 sec 1 1 80sec Detection enabled time for CNG and no tone Not used Registration of station ID Permitted 1 Prohibited 8 0 No monitoring 1 No monitoring 0 Up to phase B at the calling station only All transmission phases both at the calling and called stations Tone sound monitoring e Selector 1 Header for fax The setting becomes effective only when do not add the header in the application of the PC e Selectors 2 and 3 Detection enabled time for CNG and no tone After the line is connected via the external telephone or by picking up the handset of the machine the machine can detect a CNG signal or no tone for the time length specified by these selectors The setting specified by these selectors becomes effective only when selector 8 on WSW20 is set to 1 e Selector 6 Registration of station ID Setting this selector to O permits the registration of station ID for Austrian and Czech models e Selectors 7 a
45. cm Stop Exit button pressed during reception 0 Not functional 1 Functional Note Selector 7 is applicable to models equipped with ADF units e Selector 2 ITU T CCITT superfine recommendation If this selector is set to 1 the machine communicates in ITU T CCITT recommended superfine mode 15 4 lines mm If it is set to 0 it communicates in native superfine mode e Selector 7 Max document length limitation This selector is used to select the maximum length of a document to be sent e Selector 8 Stop Exit button pressed during reception If this selector is set to 1 pressing the Stop Exit button can stop the current receiving operation The received data will be lost App 1 21 Confidential lt WSW17 gt Selector No Function Setting and Specifications 2 0 No alarm 1 Always valid 0 Valid except when call reservation is selected Valid except when call reservation is selected Off hook alarm Not used Calendar clock type 0 U S A type 1 European type Not used Non ring reception 0 OFF 1 ON Not used e Selectors 1 and 2 Off hook alarm These selectors activate or deactivate the alarm function which sounds an alarm when the communication is completed with the handset being off the hook e Selector 5 Calendar clock type If this selector is set to 0 USA the MM DD YY hh mm format applies if it is set to 1 Europe the DD MM
46. e g 8001 in the case of MFC 7840W U S model The newly entered code appears To enter letters A through F press the 1 through 6 buttons while holding down the button respectively Note The machine does not work properly when an incorrect code is entered 3 Press the Start button The machine saves the setting and displays the PARAMETER INIT on the LCD The machine beeps for one second and returns to the initial stage of the maintenance mode If you press the Stop Exit button or no buttons are pressed for one minute in the above procedure the machine stops the procedure beeps for one second and returns to the initial stage of the maintenance mode The modification of the setting data is not saved in this case The customizing code are displayed on the next page 5 27 Confidential lt EEPROM customizing code list gt DCP MFC 7030 7040 7045N 7320 7340 7440N 7450 7840N 7840W U S A 0001 _ 8001 8001 8001 Canada 0102 0002 0002 0002 German 3059 2103 2003 2003 3004 United Kingdom a 3004 2104 2004 2004 South Africa Ireland France 3155 3055 3105 3005 2105 2005 2005 Australia g 2056 2056 2056 01045 6004 2006 2006 2
47. factory setting values lt Operating Procedure gt 1 Press the Menu button Next press the A or W button to select LAN Press the OK button BS Press the A or W button to select Factory Reset Press the OK button 3 MFC7840W 7840N 7450 7440N 7340 7320 Press the 1 button select Reset DCP7045N 7040 7030 Press the A or W button 1 appears on the LCD and then press the OK button 4 MFC7840W 7840N 7450 7440N 7340 7320 Press the 1 button select Yes DCP7045N 7040 7030 Press the A or W button Yes appears on the LCD and then press the OK button App 2 2 Confidential APPENDIX 3 SERIAL NUMBERING SYSTEM Each machine has a serial number label for the machine itself and property labels for some other parts Refer to the information below for the meaning of the serial number and property codes and the location of each label E Serial number labels for the machine itself lt How to Read gt Serial number m A7J111101 d Back Side of Main Body Model number Serial number 6 digit Manufacturing factory No MODEL PRINTER MFC REEE ag m p Year of manufacture SER NO 1 7 2007 ee eee 57 8 2008 50 60Hz Month of manufacture BROTHER INDUSTRIES LTD A January E May J September B February F June K October C March G July L November J D April H August M December Inner side of Front cover SER Noi O O OOOO ma
48. gt Selector No Function Setting and Specifications 1 2 Not used Z o eo 25 PCs 50 PCs 75 PCs 100 PCs 125 PCs 150 PCs 175 PCs 200 PCs Number of network TWAIN PCs registered for each application Not used 0 0 0 0 1 1 1 1 6 0 ONI re oor H OO fF GQa o O 90 gt 00 Default period default period without change Shorten 1 Lengthen 1 Lengthen 2 Lengthen 3 Lengthen 4 Shorten 2 Shorten 3 USB setup latency Not used 0O00 a oOo oOo oOoO o oOo e Selectors 6 through 8 USB setup latency Not used These selectors should not be disturbed App 1 53 Confidential lt WSW49 gt Selector No Function Setting and Specifications 2 0 None 1 1MB 0 2MB 1 4MB Yes Zz o RAM disc size in PCL PS End of copying beep 150 ms 350 ms 550 ms 750 ms Command flag detection time Not adjusted 80 120 150 No Default 1 Yes CCD unit warm up time adjustment Not used eRe O Sh SO eel Print in black Not used e Selectors 4 and 5 Command flag detection time After receiving a command flag the machine will wait for the command that should follow for the time length specified by these selectors e Selectors 8 Print in black Not used If any of the color inks have been deleted out of ink no printing can occur by default If this selector is
49. l l l 5 pul i i i B I o I m I es E a l 1 1 GND 5 g CENTER_THM 7 CENTER l In I EJECT_SEN PJ als 43 3 THERM ISTER 2 bo ji THN2 Edge Co an I I 7 5 ig td vos a Lo i memo Ca gjg m EDE i wir g oo u l 4 Sle a fa THERM STERI l I 1 I I l CNI l 1 CN3 z5 roo Ha FANLoLOK 1 Se ex 2 1 S ra z aL I a yy wer HH 2ARET I REG_FRONT n T SS w Lu_ 3 an SSS Sy cgay Tal p coce pn re 5 18S 1S w a S e ps E 1 rs me H a man EE a EE ss i FE FRONT_SEN a ea ss 25 ss fa s E EE z fo FLED_PWR a e laj 3 al a i 2 z o id In REG_REAR EJ l Z l CN2_ l RLED_PAR LCNz D I3 n gt ary e reaR sen em Z a8 n a od oe z l ar al 5 ao l S i a a 3 l i 2 l v Long m e e m oO F_COVER_SEN S a 1 cNi gt FE E m TEL_OFF lt a CNG vu rd z 2 A a a 1 CN18 STHEAMI STOR Anoas Nd NIOSTINd M a H eo fy ee iS 2 T1SOL S FEl EA aan miu vec2ay Z 5 PROCESS UNIT LCD 6 7 Confidential APPENDIX 1 WORKER SWITCH Settings WSW This appendix describes the functions of the Worker switches which can be divided into two groups one is for customizing preferences designed for the shipping destination Refer to 1 4 16 EEPROM Customizing Function code 74 in Chapter 5 and the other is for modifying preferences that match the machine to the environmental conditions Use the latter group if the machine malfunctions due to mismatching Each switch has eigh
50. machine checks the actual decoding errors and then transmits an RTN according to the decoding error rate Number of lines containing an error per page Total number of lines per page set by these selectors Selector 8 Limitation of attenuation level Setting this selector to 0 limits the transmitting level of the modem to 4 dB This setting has priority over the settings selected by WSW0O2 selectors 5 through 8 and WSW13 selectors 5 through 8 App 1 28 Confidential lt WSW24 gt Selector No Function Setting and Specifications Zz o 15 sec 20 sec 30 sec 50 sec Maximum OGM recording time 4 sec 3 sec 2 sec 1 sec Time length from CML ON to start of pseudo ring backtone transmission 2 0 1 0 1 4 0 1 0 1 0 dB 0 qB 0 qB 0 qB Attenuator for playback of ICM OGM to the line Not used ooool 000 00 Selectors 1 and 2 Maximum OGM recording time These selectors set the allowable maximum recording time for an OGM e Selectors 3 and 4 Time length from CML ON to start of pseudo ring backtone transmission These selectors set the length of time from CML ON up to the start of pseudo ring backtone transmission In models with OGM facilities the settings made by these selectors also apply to the length of time from CML ON up to the start of OGM transmission e Selectors 5 through 8 Attenuator for playback of ICM OGM to the line Not u
51. machine detects a CNG signal as long as the line is connected lt WSW21 gt Selector No Function Setting and Specifications 3 5 0 No detection 1 1 sec 0 2 sec 1 3 sec iN Max waiting time for voice signal Not used 0 6 sec Default TT TT hw CO o k 1 31 sec Enable signaling for A U S A Taping the call Not used Enable signaling for B countries except U S A Enable without signaling C Disable D Erasure of message stored in the memory after the message 0 Yes transfer Note e Selectors 1 through 5 are applicable to models equipped with ICM recorders e Selectors 6 through 8 are applicable to models equipped with TADs e Selectors 1 through 5 Max waiting time for voice signal Not used In the TAD mode the machine waits for voice signal for the time length specified by these selectors before it automatically shifts to the facsimile message receive mode or disconnects the line e Selectors 6 and 7 Taping the call Not used These selectors select whether or not to tape the call Setting them to 1 0 enables taping the call without signaling to the calling station that the call is being taped e Selector 8 Erasure of message stored in the memory after the message transfer Setting this selector to 0 will erase the message recorded in the memory after the document retrieval feature transfers the message App 1 26 Confidenti
52. of the LCD control panel PCB and sensors perform a print test display the log information and error codes and modify worker switches WSW How to Enter the Maintenance Mode Press the buttons in the following order Menu Start and the A button four times to make the machine enter the maintenance mode TIP This machine can enter the maintenance mode in the same way as conventional models that is by pressing in order the Menu 2 8 6 4 buttons with in 2 seconds The machine beeps for approx one second and displays EE MAINTENANCE EEE on the LCD indicating that it is placed in the initial stage of the maintenance mode a mode in which the machine is ready to accept entry from the buttons Note e In the case of the model with the numeric keys To exit from the maintenance mode and switch to standby press the 9 button twice in the initial stage of the maintenance mode In the case of the model without the numeric keys Press the A or W button The MAINTENANCE 99 appears on the LCD Then press the OK button and the machine returns to the standby state Pressing the Stop Exit button after entering only one digit restores the machine to the initial stage of the maintenance mode If an invalid function code is entered the machine beeps for one second and returns to the initial stage of the maintenance mode How to Enter the End User accessible Maintenance Mode The maintenance mode functions listed on the next page sho
53. set to 1 in cases of out of ink data will be printed only in black ink However in such circumstances no color data will be printed App 1 54 Confidential lt WSW50 gt Selector No Function Setting and Specifications Percentage voltage for 2 interpreting the external 0 0 50 telephone as being hooked up 0 i 80 based on the network s EIN 1 0 30 1 standard voltage Not used 1 No detection DC mask curve table to be 0 Apply the initial value specified by local applied when the line is regulations connected Not used 1 Apply table DC5 prepared specially AC impedance to be applied when the line is connected Not used 0 6009 termination 1 ZR termination No 5 6 0 0 Standard Current control to be applied 0 1 Increase start up current for immediately after connection of termination the line Not used 0 Fine current control for termination 1 Not used equal to 0 0 8 0 19 V 1 11V 0 25 V 1 31V AC voltage threshold for detection of ring Not used Note WSW50 is applicable to models equipped with SDAA circuits e Selectors 5 and 6 Current control to be applied immediately after connection of the line Not used FAX models equipped with an SDAA circuit on which an NTU chip is mounted might not be connected to a broad band line such as an ADSL Asynchronous Digital Subscriber Line in a stable condition If those models fail to connect to such a li
54. setting the white Yes scanning area Function area malfunction level of scanning code 55 2 FB unit failure Is the problem solved by Yes Replace the FB unit replacing the FB unit Main PCB failure Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY PCB ASSY Vertical streaks White or Black vertical streaks User Check e Check if the ADF or FB glass is not stained Step Cause Check Result Remedy Setting of white Is the problem solved Set the white level 1 level scanning after setting the white Yes scanning area Function area malfunction level of scanning code 55 2 FB unit failure Is the problem solved by Yes Replace the FB unit replacing the FB unit Poor fixing User Check e Check if the ADF or FB glass is not stained Step Cause Check Result Remedy 1 FB unit failure Is the problem solved by Yes Replace the FB unit replacing the FB unit Image distortion Step Cause Check Result Remedy FB unit failure Is the problem solved by replacing the FB unit Replace the FB unit 1 Yes 1 44 Confidential SOFTWARE SETTING PROBLEMS The machine may not print the data correctly if there are incorrect software settings User Check e Check that the USB cable and the network cable is not damaged or broken e Check that the correct machine is selected if you have an in
55. standby the reference voltage to be 10 sec applied to white level 30 sec compensation for document 1 min scanning during standby 3 min Not used 5 min 10 min 30 min Standby position of the CIS unit 0 CIS home position Not used 1 Location of the white level reference film oOoO o o k k Line polarity reverse detection function Not used aNG Teas Note WSW45 is applicable only to flat head type models e Selectors 1 through 3 Delay time from when documents are set until the ADF starts drawing them in Not used These selectors determine how long the ADF will delay automatic drawing in of documents to the scanning standby position after you set them in the ADF as well as determining whether or not the ADF automatically draws in documents e Selectors 4 through 6 Periodical correction intervals of the reference voltage applied to white level compensation for document scanning during standby Not used These selectors set the correction intervals in seconds of the reference voltage to be applied to white level compensation for document scanning during standby as well as determining whether or not the controller makes the reference voltage correction during standby Conventionally the correction has been made immediately before the start of actual scanning This function takes effect in copying Making the correction during standby may shorten the preparation time for co
56. the Main body note the assembling method referring to the figure below lt gt _ lt Bottom sides Fig 3 64 CAUTION When the Separation R shaft bush does not slide across correctly place the Rib of the Bush 6 while aligning with the Groove of the Main body shaft hole from the Main frame L ASSY side 3 65 Confidential 8 21 WIRELESS LAN PCB ASSY only MFC7840W 1 Disconnect the Connector from the Wireless LAN PCB ASSY 2 Release the Hook to remove the Wireless LAN PCB ASSY from the Main body Connector m Wireless LAN PCB ASSY Wireless LAN PCB ASSY Fig 3 65 3 66 Confidential 8 22 MAIN PCB ASSY 1 Disconnect the five FFCs and the eight Connectors from the Main PCB ASSY 2 Remove the four Taptite cup S M3x6 SR screws and then remove the FG harness ASSY and the Main PCB ASSY from the Main body Main PCB ASSY FG harness ASSY Connector Connector FFC Fig 3 66 Note e After disconnecting the flat cable s check that each cable is not damaged at its end or short circuited e When connecting the flat cable s do not insert it at an angle After insertion check that the cable is not at an angle Assembling Note e If the FG harness ASSY which comes from the Laser unit is not connected the Laser unit may break down or not function correctly Replacement Main PCB
57. the Registration solenoid from the Main body 8 Remove the Registration solenoid lever from the Registration solenoid Registration solenoid lever spring Registration solenoid Taptite bind B M3x10 Registration solenoid lever fax Ao 8 iis 1 J AY JS Harness Fig 3 97 3 94 Confidential 8 36 2 T1 SOLENOID 1 Remove the T1 solenoid lever spring from the Main body and the T1 solenoid lever 2 Remove the Harness from the Guide part of the Main body 3 Remove the Taptite bind B M3x10 screw and then remove the T1 solenoid from the Main body 4 Remove the T1 solenoid lever from the T1 solenoid T1 solenoid lever a Taptite bind B M3x10 Guide part Harness Hook Fig 3 98 Confidential 3 95 8 37 MAIN SHIELD PLATE EJECT SENSOR PCB ASSY 1 Remove the three Taptite bind B M3x10 screws and then remove the FU front paper guide from the Main body Taptite bind B M3x10 FU front paper guide lt Back side gt Fig 3 99 3 96 Confidential 2 Remove the two Taptite cup S M3x6 SR screws and then remove the Chute ground plate from the Main body Chute ground plate Taptite cup S M3x6 SR lt Back side gt Fig 3 100 3 97 Confidential 3 Remove the Main PCB sheet from the Main sh
58. the machine acknowledge itself to be called That is if the machine continuously detects a Cl signal with the frequency set by selectors 1 through 4 on WSW14 during the period set by these selectors 5 and 6 then it acknowledges the call Selector 7 Line connection timing If a line is connected in a ringer ON period FAX models equipped with SDAA circuits may malfunction due to the ringer voltage To make the line connection stable this selector should be set to 0 so that a line is connected in a ringer OFF period App 1 17 Confidential lt WSW13 gt Selector No Function Setting and Specifications 2 0 0 km 1 1 8 km 3 6 km 5 6 km Cable equalizer 43 dBm 47 dBm 49 dBm 51 dBm 0 dB 1 8 dB 0 qB 1 4 dB 0 qB 1 2 qB 0 qB 1 1 qB Reception level Modem attenuator Note The modem should be adjusted according to the user s line conditions Selectors 1 and 2 Cable equalizer These selectors are used to improve the pass band characteristics of analogue signals on a line Attenuation in the high band frequency is greater than in the low band frequency Set these selectors according to the distance from the telephone switchboard to the machine e Selectors 3 and 4 Reception level These selectors set the optimum receive signal level e Selectors 5 through 8 Modem attenuator These selectors are used to adjust the transmitting level attenuation of the modem when the rec
59. the main PCB and Reconnect the connector 1 between main control panel PCB No properly PCB and control connected properly panel PCB Connection Are the main PCB and Reconnect the connector 2 between main LVPS PCB unit No properly PCB and LVPS connected properly PCB unit 3 LCD Is the problem solved Yes Replace the LCD after replacing the LCD Control panel Is the problem solved Replace the control panel 4 PCB after replacing the Yes PCB control panel PCB LVPS PCB unit Is the problem solved Replace the LVPS PCB 5 after replacing the LVPS Yes unit PCB unit Main PCB Is the problem solved Replace the main PCB 6 after replacing the main Yes ASSY PCB ASSY 1 51 Confidential E The control panel does not work Step Cause Check Result Remedy Key sticking Is a key on the control Clean the panel cover or panel stuck remove the any burrs from 1 Yes the panel cover and panel keys Connection Are the main PCB and Reconnect the connector 2 between main control panel PCB No correctly PCB and control connected properly panel PCB Harness Is the harness Replace the harness with 3 between main damaged Yes 2 normal one PCB and control panel PCB Rubber Key Is the problem solved Replace the rubber Key 4 after replacing the Yes rubber key Control panel Is the problem solved Replace the control panel 5 PCB after replacing the Yes PCB control panel PCB Main PC
60. two indications are displayed 4 9 Confidential 2 IF YOU REPLACE THE WIRELESS LAN PCB lt What to do when replacing the wireless LAN PCB gt e Backup to the Main PCB of the Wireless LAN PCB Information MFC 7840W only lt Which parts to use gt WIRELESS LAN PCB ASSY E Backup to the Main PCB of the Wireless LAN PCB Information MFC 7840W only The main PCB stores a part of the information of EEPROM on the wireless LAN PCB It is necessary to write the information of EEPROM on the wireless LAN PCB 1 Turn the power supply of the machine on while pressing the A and OK button at the same time Hold on the A and OK button while pressing it PLEASE WAIT is displayed on the LCD When continue pressing the A and OK button CHECK START is displayed on the LCD AT this time release the two buttons 2 After having passed for a while WLAN MODULE OK is displayed on the LCD Turn the power supply of the machine off after two indications are displayed 4 10 Confidential 3 IF YOU REPLACE THE LASER UNIT E inputting the adjustment value of the laser unit Note e When replace the laser unit attach the serial label with the provided the new laser unit to the driver sub ASSY e The input of following the correction value of the laser unit enter the serial label number with the provided the new laser unit Drive sub ASSY 2 to 10mm Serial label Fig 4 2 Double click the brmainte EX
61. upon receipt of data from the PC Selector 3 PC Power off Recognition Time Not used This selector sets the time length from when the machine detects the PC powered off until it recognizes the detected state as power off If selector 2 is set to 0 it is recommended that selector 3 be set to 1 otherwise the machine may mistakenly detect PC powered off Selector 5 Escape from phase C This selector determines whether or not the machine will escape from phase C when it detects an RTC Return to Control in non ECM mode or an RCP Return to Control Partial page in ECM mode Selectors 6 through 8 Extension of incoming calling signal Cl frequency band specified by selectors 1 through 4 on WSW14 At the start of reception if the machine detects the frequency of a Cl signal specified by selectors 1 through 4 on WSW14 it starts the ringer sounding However the machine may fail to detect the Cl signal normally due to noise superimposed at the time of reception To prevent it use selectors 6 through 8 on WSW36 If the machine detects higher frequencies than the setting made here it regards them as noise and interprets the detecting state as being normal allowing the ringer to keep sounding according to the preset number of ringers until it starts automatic reception of FAX data in the FAX mode or enters the TAD mode in the TEL mode App 1 41 Confidential lt WSW37 gt Selector No Function Setting and Specifications
62. ws IMAGE DEFECT TROUBLESHOOTING Defect Of the Print Completely blank Vertical streaks White horizontal streaks Downward fogging of solid color Faint print Horizontal lines When the failure does not reproduce by print the test pattern MAINTENANCE 09 or PC print refer to 6 TROUBLESHOOTING OF SCANNIG Diameter of Rollers Image defects which appear periodically may be caused by failure of a roller Specify the cause referring to the diameter of the rollers or pitch which appears in the image as shown in the table below No Parts name Diameter w 1 Develop roller 20 0 mm 41 0 mm 2 Exposure drum 24 0 mm 75 0 mm 3 Heat roller in the fuser unit 25 0 mm 78 5 mm 4 Pressure roller ASSY in the fuser unit 25 0 mm 78 5 mm 1 29 Confidential Troubleshooting Image Defect Image defect related problems are end user recoverable if following the User Check items If the same problem occurs follow each procedure in the order of the number described in the Step column in the tables below E Light User Check e Check the machine s environment High temperature and high humidity conditions can cause this problem e If the whole page is light toner save mode may be on e Replace the toner cartridge or drum unit with a new one Step Cause Check Result Remedy Dirt on exposure Are the electrodes of the Clean both ele
63. 006 Belgium 3155 3055 b _ 3108 300 2108 2008 2008 Nether lands 3155 3055 3109 3009 2109 2009 2009 Switzer land 3104 3004 2110 2010 2010 Austria E 3053 3014 3014 2103 2014 2014 Spain 2115 2015 2015 Italy 3104 HR 2116 2016 2016 Israel 2104 Portugal 3014 3004 2118 2018 2018 China 2120 2020 2020 0040 0040 0140 New Zealand 2056 2056 2056 GOA Ra ee 2027 2027 _ 20127 Argentina Chilly 1036 5 0036 0036 Asia 4104 4004 0040 0040 0040 0140 Brazil 0042 0042 Russia 7104 2148 2048 2048 PAN Norway 2157 2057 2057 NORDIC 2107 2007 2007 Sweden 2157 2057 2057 a 3004 2126 2026 2026 Finland 2157 2057 2057 2112 2012 2012 Denmark 2157 2057 2057 2113 2013 2013 Others 5 2157 2057 2057 2150 2050 2050 EEU Czech 2188 2088 P z 2088 GENERAL 2137 2037 2037 Hungary 2118 2088 2088 2138 2038 2038 Poland 2118 2088 2088 2139 2039 2039 Bulgaria 3104 3088 2118 2088 2088 3014 2132 2032 2032 Romania 2188 2088 2088 2133 2033 2033 Slovakia 2188 2088 2088 2131 2030 2030 Others 2188 2088 2088 2150 2050 2050 5 28 Confidential 1 4 17 Operational Check of Fans Function code 78 lt Function gt This function is to check whether each of fans is operating correctly or not The following fans are checked LCD Parts Name Description F1 Fan motor 60 Evacuate hot air of inside of
64. 1 through 3 ON duration of the scanning light source at room temperature Not used If the scanning operation is started when the scanning light source is off then it will come on for scanning These selectors determine how long the light source is ON after scanning If these selectors are set to 1 1 1 the light source goes off immediately after the scanning sequence e Selectors 5 through 8 Modem attenuator Not used These selectors are used to adjust the transmitting level of the modem when the reception level at the remote station is improper due to line loss This function applies to super G3 protocol signals App 1 47 Confidential lt WSW42 gt Selector No Function Setting and Specifications Access to the incoming mail POP3 server Periodical or 0 OFF 1 ON on demand Not used Access to the outgoing mail SMTP server BE OEE TON I FAX relay Not used 0 OFF 1 ON JBIG encoding system 0 Not allowed 1 Allowed Discharge detection Not used 0 ON 1 OFF Not used lt WSW43 gt Selector No Function Setting and Specifications 1 No Header for sent mail n Wait time for PC Fax reception Class 2 and FPTS command transmission Detection time of 2100 Hz CED or ANSam 00 A 00N o 9 09a 9 90 g Not used Automatic start of remote maintenance JPEG coding Disable 1 Enable No 1 Yes e Selector 1
65. 2 GE2 2 places 2 places Drive frame ASSY GE2 FLOIL GE 676 2mm dia ball Fig 3 4 3 7 Confidential 5 OVERVIEW OF GEARS REGISTRATION DIFFERENTIAL EJECTOR GEAR 15 25 FUSER GEAR 22 37 GEAR ASSY LU2018001 LU2015001 LU2049001 REGISTRATION GEAR 27 PENDULUM FEEDER GEAR 17 22 LU2048001 LU2043001 EJECTOR GEAR 17 LU2016001 EJECTOR GEAR 26 LU2017001 DEV GEAR 17 33L LU2054001 FEEDER GEAR 26 20 LU2042001 DEV GEAR 17 18R 47R P P GEAR 29 SECTOR LU2053001 LU2045001 REGISTRATION GEAR 19 T1 GEAR 38 31 SECTOR LU2047001 LU2044001 is part code Fig 3 5 CAUTION The part codes of gears are subject to change without notice 3 8 Confidential HARNESS ROUTING 6 a ADF motor ADF sensor PCB ASSY to Main PCB ASSY ADF sensor PCB ASSY ADF motor q D ar N N A MU Q Main PCB Shield plate E SJ v io pY lt Back Side gt Main PCB ASSY Confidential 3 9 2 NCU PCB Battery ASSY Speaker unit ASSY to MAIN PCB ASSY Speaker unit ASSY Battery ASSY NCU eee RES EN Document scanner unit Panel PCB ASSY Document scanner unit Main PCB ASSY Panel PCB ASSY 3 10 Confidential Fuser unit 4 FUSER UNIT PS PCB unit EA FG HARNESS Laser unit lt Back side gt FG
66. 30 for the period specified by these selectors then it disconnects the line lt WSW36 gt Selector No Function Setting and Specifications ECP mode Not used 0 ON 1 OFF Recovery from Inactive PC Interface Not used 0 Disable 1 Enable PC Power off Recognition Time Not used Not used 0 Normal 1 Long 1 No no Escape from phase C Ignored 448 Hz 244 Hz 162 Hz 122 Hz Extension of incoming calling signal Cl frequency band specified by selectors 1 through 4 on WSW14 N ORAO ooh 97 Hz 81 Hz 69 Hz 00000 N KK 3200CA 00N ren ee On Oe OO N ECP Enhanced Capabilities Port Note Selectors 2 and 3 will become operative if selectors 1 and 2 of WSW46 are set to monitor the PC power ON OFF state App 1 40 Confidential e Selector 1 ECP mode Not used The ECP mode enhances the normal bidirectional communications between the machine and the connected PC for higher transmission speed Selector 2 Recovery from Inactive PC Interface Not used If the machine recognizes via the STB signal line that the connected PC is powered off it will turn the PC interface outputs Low to protect the PC from hazards that could be caused by weak electric current accidentally flown from the machine This selector determines whether or not the machine should recover from the inactive PC interface to normal interfacing state
67. 31200 bps If selector 8 is set to 1 to mask the 2400 symbols second when the first transmission speed choice is 33600 bps then the allowable maximum transmission speed remains 33600 bps If selector 8 is set to 1 to mask the 2400 symbols second when the first transmission speed choice is 21600 bps specified by selectors 1 through 4 on WSW339 then the allowable maximum transmission speed remains 21600 bps but the minimum transmission speed will be limited to 4800 bps App 1 45 Confidential Symoot te Taare Sambetrte edits SNBO ato sped te 2400 2 400 3000 4 800 3429 4 800 4 800 7 200 7 200 7 200 9 600 9 600 9 600 12 000 12 000 12 000 14 400 14 400 14 400 16 800 16 800 16 800 19 200 19 200 19 200 21 600 21 600 21 600 24 000 24 000 26 400 28 800 28 800 31 200 2800 4 800 3200 4 800 33 600 7 200 7 200 9 600 9 600 12 000 12 000 14 400 14 400 16 800 16 800 19 200 19 200 21 600 21 600 24 000 24 000 24 600 26 400 28 800 31 200 App 1 46 Confidential lt WSW41 gt Selector No Function Setting and Specifications Z o w 16 hours 24 hours 12 hours 8 hours 4 hours 2 hours 10 min 0 min 1 OFF ON duration of the scanning light source at room temperature Not used 00 00ND o o0O0 0 I FAX relay report Not used 8 0 10 dBm 1 11 dBm 0 12 dBm 1 13 dBm 0 14 dBm l 1 25 dBm Modem attenuator Not used Selectors
68. 60 ASSY Toner sensor Is the problem solved Replace the toner sensor 2 PCB failure after replacing the toner Yes PCB ASSY sensor PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY PCB ASSY Confidential E Pickup function of paper tray does not work operating smoothly or catching Step Cause Remedy 1 Link arm not operating smoothly or Make sure correct movemet of the link arm catching 2 Pickup roller holder ASSY not Make sure correct movement of the pickup roller holder ASSY Roller holder ASSY failure Replace the roller holder ASSY Main motor failure Replace the main motor Main PCB failure Replace the main PCB ASSY E The new toner is not detected Step Cause Remedy 1 New toner actuator does not Make sure correct movement of the new operate smoothly or is catching toner actuator New toner actuator damaged Replace the new toner actuator Main PCB failure Replace the main PCB ASSY 4 New toner sensor harness ASSY Replace the new toner sensor harness failure ASSY Confidential CHAPTER 2 PERIODICAL MAINTENANCE To avoid creating secondary problems by mishandling follow the warnings below during maintenance work WARNING e Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the
69. 6B 6C 6D 6E 6F 76 and 78 Step Cause Remedy Harness connection failure Check the harness connection between the 1 between fuser unit and eject fuser unit and eject sensor PCB and sensor PCB reconnect it 2 Fuser unit failure Replace the fuser unit 3 LVPS PCB failure Replace the LVPS PCB unit 4 Eject sensor PCB ASSY failure Replace the eject sensor PCB ASSY 5 Main PCB failure Replace the main PCB ASSY 1 8 Confidential E Error code 5A Print Unable 5A See Troubleshooting and routine maintenance chapter in User s Guide HVPS PCB failure Developing bias voltage failure Step Cause Remedy HVPS PCB ASSY harness Check the harness connection between the 1 connection failure HVPS PCB and main PCB Then reconnect them HVPS PCB failure Replace the HVPS PCB ASSY Main PCB failure Replace the main PCB ASSY E Error code 5B Cartridge Error Put the Black Toner Cartridge back in New toner detection lever malfunction User Check e Check if the toner cartridge is attached Step Cause Remedy 1 New toner detection switch Check the harness connection of the new harness connection failure toner detection switch Then reconnect it New toner detection switch failure Replace the new toner harness ASSY Main PCB failure Replace the main PCB ASSY 1 9 Confide
70. 7040 7030 Press the A or W button MAINTENANCE 82 appears on the LCD and then press the OK button The machine displays MACHINE ERROR X X on the LCD Refer to 2 ERROR CAUSE in Chapter 1 2 Press the Stop Exit button The machine beeps for one second and returns to the initial stage of the maintenance mode 1 4 20 Output of Transmission Log to the Telephone Line Function code 87 only MFC7840W 7840N 7450 7440N 7340 7320 lt Function gt This function outputs the transmission log that the machine has stored about the latest transmission to the telephone line It allows the service personnel to receive the transmission log of the user s machine at a remote location and use it for analyzing problems arising in the user s machine lt Operating Procedure gt 1 If the user s machine has a transmission related problem call the user s machine at a remote location from your machine 2 If the line is connected have the user perform the following 1 Hook up to the external phone 2 Press in order the Menu Start Menu buttons 3 Press the 8 and 7 buttons The above operation makes the user s machine send CNG to your machine for sending the transmission log 3 If you hear the CNG sent from the user s machine press the Black Start button of your machine Your machine will start to receive the transmission log from the user s machine 5 33 Confidential 1 4 21 Exit from the Maintenance Mode Function code 99
71. 8 89 BS 3 OS 80F35239 93 D B B9 Go EJ Ea 63 63 63 Sorosa 96 09 09 03 83 Ea 63 Ba 68 63 Bpro5200 g9 G9 G3 03 03 C3 g3 E9 3 f Sor55260 6e Ba BB 89 G3 Ga 69 69 GA 6D Sof35279 6e B3 69 83 a3 g 63 63 63 63 Boros2e0 69 63 89 88 83 63 63 63 ea 69 Sof 5299 83 83 89 89 83 63 68 63 68 83 Sors5200 83 63 BS Be g8 E3 EB 63 63 83 Sorss2b0 09 03 B 88 Bs ES 68 63 63 83 Sofs5 c 09 09 6S 68 Gs ES 87 63 8783 Sora52ua 67 05 09 0S 09 68 Eg 69 69 87 30728320 87 GS 67 oF 30728330 83 68 66 67 80fo5330 67 6 67 87 30f98350 87 66 67 67 Sors8360 67 67 amp 67 E 50f35370 87 e5 65 80138380 87 67 80725350 Bz 80f55330 Bora8ab0 S0f95300 50f95340 Sorsede0 0938310 Eare aorosase Sorosaee aprosare 3ofo3400 aof oava Sof o8aa0 entbdeio areease Sfbte28 Sofosaca Sofedea0 Sofosada Sarbtea aorosaeo Sofb4es0 Sorosaro Sofbaoeo aprosaoe faprosaie Sorens Sorbdead E ea Soross ag Sorndets earesese Srbtecd eoresees Sorbaeda Soroa 70 SBrbices aprosas Sbrbas00 G3 fos500 aerbael9 Sores asa BREEDS aoresacs sorbara Soroado aorbarad arose aarbston Seress 7o E Gorosren BOfbAt7D BaFbGFEO BORGES Safbafa Barbaro Bafbafe gafbafde Safbafe Ld Barbar re Bfb5200 Spfb518 5efb5020 Serb5030 50fb5040 BproSaSA GoFESab0 BoFB8o7a 30fD5830 L 30fo5830 BOFS5BAD BBFO5B0 90F352 9 goFesbda B0F50 9 BorDsofa B0fb5183 Sorbsila 0fbS12a 8055133 Brb5143 80fb5158 B07
72. ASSY Fig 3 70 CAUTION Be careful not to damage the Hook of the New toner sensor harness ASSY 3 71 Confidential 8 26 FILTER ASSY 1 Remove the Filter ASSY from the Main body ft an Filter ASSY Fig 3 71 3 72 Confidential 8 27 LASER UNIT 1 Remove the three Taptite cup S M3x6 SR screws and the Taptite pan S P washer S M3x8 screw and then remove the Laser unit from the Main body Memo e Ensure when you remove the Laser unit that the DEV joint link is pulled out Laser unit Taptite cup S M3x6 SR DEV joint link Taptite cup S M3x6 SR Taptite pan S P washer S M3x8 Fig 3 72 3 73 Confidential 2 Remove the Taptite cup S M3x6 SR screw and then remove the FG harness ASSY from the Laser unit 3 Remove the Taptite cup S M3x6 SR screw and then remove the Air duct from the Laser unit Taptite cup S M3x6 SR Air duct FG harness ASSY Laser unit CAUTION When replacing the Laser unit replace the Serial label attached on the Drive sub ASSY with the new one supplied with a new Laser unit If an extra Serial label is supplied with a new unit as spare Make sure to throw the spare label away after replacing the Laser unit it is necessary to input the new Laser unit characteristics information Refer to 3 IF YOU REPLACE THE LASER UNIT in Chap
73. Allowable instantaneous interrupt during reception of 1st dial tone This selector sets the allowable instantaneous interrupt period that should be ignored during reception of the 1st dial tone App 1 12 Confidential lt WSW08 gt Selector No Function Setting and Specifications Z o _ em 50 ms 250 ms 500 ms 620 ms 800 ms 1 5 sec 2 0 sec 2 5 sec 1st dial tone detection time length o 0 0 0 10 sec 20 sec 15 sec 30 sec Time out length for 1st and 2nd dial tone detection 21 dBm 24 dBm 27 dBm 30 dBm 33 dBm 36 dBm 39 dBm 42 dBm Detection level of 1st dial tone and busy tone before dialing 00000 00A 0000 00 00N 90 0 0 00 00N O 0 0 O Note The WSWOS8 is not applicable in those countries where no dial tone detection is supported e g U S A e Selectors 1 through 3 1st dial tone detection time length Upon detection of the 1st dial tone for the time length set by these selectors the machine starts dialing This setting is effective only when selectors 1 through 3 on WSW05 are set to 1 1 1 e Selectors 4 and 5 Time out length for 1st and 2nd dial tone detection These selectors set the time out length for the 1st and 2nd dial tone detection so that the machine waits dial tone input for the specified time length and disconnects itself from the line when no dial tone is inputted
74. B Is the problem solved Replace the main PCB 6 after replacing the main Yes ASSY PCB ASSY Confidential 11 Troubleshooting of fax functions E FAX can t be sent User Check e Verify that the telephone cord is securely connected Step Cause Check Result Remedy Dial mode Can a dialing signal PB Check the dialing mode Setting or DP be heard setting at customer s 1 normally in each mode Yes again Check the Use telephone line telephone line cord emulator if required between machine and socket Connection Are the main PCB and Reconnect the connector 2 between main NCU PCB connected No PCB and NCU correctly PCB Connection Are the main PCB and Reconnect the connector 3 between main control panel PCB No PCB and control connected correctly panel PCB 4 Contact of rubber Does the rubber keys No Replace the rubber Keys keys work correctly NCU PCB Is the problem solved Replace the NCU PCB 5 after replacing the NCU Yes ASSY PCB ASSY Control panel Is the problem solved Replace the control panel 6 PCB after replacing the Yes PCB control panel PCB Main PCB Is the problem solved Replace the main PCB 7 after replacing the main Yes ASSY PCB ASSY Confidential E Speed dialing and One touch dialing can t be used Step Cause Check Result Remedy Speed dialing Can a fax transmission Replace the main P
75. C power line and on the telephone line or unplug the cords during a lightning storm WARNING IMPORTANT SAFETY INSTRUCTIONS When using your telephone equipment basic safety precautions should always be followed to reduce the risk of fire electric shock and injury to people including the following DO NOT use this product near water for example near a bath tub wash bowl kitchen sink washing machine or in a wet basement or near a swimming pool Avoid using this product during an electrical storm There may be a remote risk of electric shock from lightning DO NOT use this product to report a gas leak in the vicinity of the leak Use only the power cord provided with the machine DO NOT dispose of batteries in a fire They may explode Check with local codes for possible special disposal instructions SAVE THESE INSTRUCTIONS xvi Confidential CHAPTER 1 TROUBLESHOOTING 1 1 INTRODUCTION Troubleshooting is the countermeasure procedures that the service personnel should follow if an error or malfunction occurs with the machine It is impossible to anticipate all of the possible problems which may occur in future and determine the troubleshooting procedures so this chapter covers some sample problems However these samples will help the service personnel pinpoint and repair other defective elements Precautions Be sure to observe and follow all the precautions to prevent any secondary problems from happ
76. CB 1 keys or one be made using the Yes ASSY touch dialing numeric keys keys Dial mode Can a dialing signal PB Check the dialing mode Setting or DP be heard setting at customer s 2 normally in each mode Yes again Use telephone line Check the telephone line emulator if required cord between machine and socket Connection Are the main PCB and Reconnect the connector 3 between main NCU PCB connected No PCB and NCU correctly PCB Connection Are the main PCB and Reconnect the connector 4 between main control panel PCB No PCB and control connected correctly panel PCB Contact of rubber Is the problem solved Replace the rubber Keys 5 keys after replacing the No rubber keys NCU PCB Is the problem solved Replace the NCU PCB 6 after replacing the NCU Yes ASSY PCB ASSY Control panel Is the problem solved Replace the control panel 7 PCB after replacing the Yes PCB control panel PCB E FAX can not be received User Check e Verify that the telephone cord is securely inserted Step Cause Check Result Remedy Receive mode Is the receive mode set Set the receive mode to 1 setting to automatic receive No automatic receive mode mode NCU PCB Is the problem solved Replace the NCU PCB 2 after replacing the NCU Yes ASSY PCB ASSY Main PCB Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY PCB ASSY Confidential E No ringing sound
77. CHAPTER 5 SERVICE FUNCTIONS Describes the maintenance mode which is exclusively designed for the purpose of checking the settings and adjustments using the keys on the panel This chapter also covers hidden function menus which activate settings and functions or reset the parts life CHAPTER 6 CIRCUIT DIAGRAMS WIRING DIAGRAM Provides the Circuit Diagrams and Wiring Diagram for the connections of the PCBs i Confidential APPENDIX 1 WORKER SWITCH Settings WSW APPENDIX 2 DELETION OF PERSONAL INFORMATION APPENDIX 3 SERIAL NUMBERING SYSTEM APPENDIX 4 SCREW CATALOGUE APPENDIX 5 GLOSSARY APPENDIX 6 REFERENCES Information in this manual is subject to change due to improvement or redesign of the product All relevant information in such cases will be supplied in service information bulletins Technical Information A thorough understanding of this machine based on information in this service manual and service information bulletins is required for maintaining its print quality performance and for improving the practical ability to find the cause of problems There is the service reference manual as well This service reference manual contains SPECIFICATIONS THEORY OF OPERATION TONER CARTRIDGE WEIGHT INFORMATION REFERENCES and GLOSSARY ii Confidential TABLE OF CONTENTS PRERIO E i ana iain ne ee i REGULATION Sinsin a AAE A viii SAFETY INFORMATION eisevicsisississcictsusnerscivetendedeubu
78. CYCLE 30 MS INITIAL DATA 738 DBM 38 MS TIAL_DATA 5 688 175 688 MS 700 MS 7 SEC 258 MS Fig 5 3 Upon completion of printing the machine beeps for one second and returns to the initial stage of the maintenance mode Confidential 1 4 7 Operational Check of LCD Function code 12 lt Function gt This function allows you to check whether the LCD on the control panel works normally lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 1 and 2 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 12 appears on the LCD and then press the OK button The LCD shows 2 Press the Start button Each time you press the Black Start button the LCD cycles through the displays shown below 3 Press the Stop Exit button in any process of the above display cycle The machine beeps for one second and returns to the initial stage of the maintenance mode Start button Start button Start button Fig 5 4 5 13 Confidential 1 4 8 Operational Check of Control Panel Button Function code 13 lt Function gt This function allows you to check the control panel button for normal operation lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 1 and 3 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button
79. Confidential 11 General communications related Code 1 Code 2 Causes BO 02 Unable to receive the next page data BO 03 Unable to receive polling even during turn around transmission due to call reservation BO 04 PC interface error Communication canceled by pressing the Stop Exit button before BF 01 establishment of FAX communication Communication canceled by pressing the Stop Exit button after BF 02 establishment of FAX communication Transmission canceled due to a scanning error caused by no BF 03 document or document feed problem in ADF scanning in real time transmission Establishment of FAX communication FAX communication is established when the calling station receives a DIS reception capability signal from the called station and the called station receives a NSS or DCS communications test signal from the calling station 12 Maintenance mode Code 1 Code 2 Causes EO 01 Failed to detect 1300 Hz signal in burn in operation EO 02 Failed to detect PB signals in burn in operation 13 Equipment error Code 1 Code 2 Causes Equipment error FF XX For X X refer to 2 1 Error indication 1 50 Confidential 10 Troubleshooting of the control panel E Nothing is displayed on the LCD User Check e Verify if the power switch is turned off Step Cause Check Result Remedy Connection Are
80. D PLATE 2 1 Remove the two Taptite bind B M4x12 screws and the two Taptite cup S M3x6 SR screws and then remove the LV shield plate 2 LV shield plate 2 Taptite cup S M3x6 SR a Taptite bind B M4x12 Taptite cup S M3x6 SR Fig 3 81 3 80 Confidential 8 30 REGISTRATION FRONT SENSOR PCB ASSY 1 Remove the Harness of the Registration front sensor PCB ASSY and the Registration rear sensor PCB ASSY from the Guide part of the Main body Guide part QQQ09 y OO Q00 lt Right side gt Ss Ss Fig 3 82 3 81 Confidential 2 Remove the two Taptite bind B M3x10 screws and then remove the Actuator holder ASSY from the Main body Taptite bind B M3x10 Actuator holder ASSY Fig 3 83 3 82 Confidential 3 Remove the Registration actuator spring from the Hook part 4 Release the Hook to turn the Registration front actuator 5 Slide the Registration front actuator to remove the Registration front actuator from the Actuator holder ASSY Y Registration front actuator Hook part Registration actuator spring ME 2 A Hook A I Registration front actuator 1 Registration front actuator Actuator holder ASSY Fig 3 84 3 83 Confidential 6 Remove the Edge actuator spring from the Actuator holder ASSY 7 Release the Hook and Slide the Edge actuator t
81. D Taptite bind B M3x10 1 0 50 1 5 1 T1 SOLENOID Taptite bind B M3x10 1 0 5 0 1 5 1 FU FRONT PAPER GUIDE Taptite bind B M3x10 3 0 5 0 1 5 1 CHUTE GROUND PLATE Taptite cup S M3x6 SR 2 0 60 1 6 1 MAIN SHIELD PLATE Taptite bind B M4x12 3 0 8 0 1 8 1 MAIN FRAME L ASSY Taptite bind B M4x12 4 0 8 0 1 8 1 Taptite cup S M3x6 SR 2 0 7 0 1 7 1 3 4 Confidential 4 LUBRICATION The kind of the lubricating oil 5 f ears Maker name Lubrication point Quantity of lubrication FLOIL BG MU Dev gear joint 53R 2mm dia ball Kanto Kasei Drive sub ASSY BG2 Drum gear 25L 139L MOLYKOTE EM D110 Separation pad ASSY 2mm dia ball Dow Corning Toray EM2 FLOIL GE 676 LF roller ASSY 2mm dia ball Kanto Kasei Ejection roller ASSY GE2 Drive frame ASSY 24 places AHN BG2 4 places DEV gear joint 53R Tl S aay Drum gear 25L 139L J Le a ALe FS a I BG2 KLOIL BG MU 2mm dia ball R Z Sa Drive sub ASSY Fig 3 2 3 5 Confidential Paper tray unit Separation pad ASSY EM2 4 places EM2 MOLYKOTE EM D110 2mm dia ball EM2 MOLYKOTE EM D110 2mm dia ball CAUTION Be careful not to let lubricants touch the opposite side of the Separation pad ASSY Fig 3 3 3 6 Confidential GE2 1 places Conductive bushing LF roller ASSY GE2 1 places Ejection roller ASSY GE
82. E file maintenance utility Select Input Information from Menu Select the applicable model name Check the port USB that the machine is connected through Select Adjust Scanner from Menu Enter the serial number the last four digits which is affixed to chassis of the right side of the Main PCB into the box on the right hand Click the OK button 4 IF YOU REPLACE THE FB UNIT E Acquisition of White level data and set the CIS scanner area 1 Press the buttons in the following order Menu Start and the A button four times to make the machine enter the maintenance mode Refer to 1 1 How to Enter the Maintenance Mode in Chapter 5 2 MFC 7840W 7840N 7450 7440N 7340 7320 Press the 5 button twice DCP _7045N 7040 7030 Press the A or W button several times MAINTENANCE 55 appears on the LCD and then press the OK button Press START appears on the LCD 3 Press the Start button The white level data will be acquired automatically 4 If the procedure is completed the machine will automatically return to the initial stage of the maintenance mode 4 12 Confidential CHAPTER 5 SERVICE FUNCTIONS 1 1 1 2 MAINTENANCE MODE The maintenance mode is exclusively designed for the checking setting and adjustment of the machine by using the buttons on the control panel You can customize the EEPROM according to the shipment destination of the machine concerned In addition you can perform operational checks
83. ER ASSY iiinneag iaasa aN aa e a a E Ea EE Oaea a Na 3 18 8 21 FRONT COVER ASSY vrari siyin enaa eraan ea aa iaaa o anaie 3 18 8 2 2 PAPER STOPPER L PAPER STOPPERS 0 ccccceeeseeeeseeeeeeeeeeeeneeeeeaeeeseaeeeseaes 3 20 8 3 BACK COVER OUTER CHUTE ASSY 000 eccccccccceceeeeeeneeeeeaeeeeeaeeeeeaeeeseaeeeseaeeeseeeeseeees 3 21 8 3 1 BACK COVER tesesteces cectesseseccvesteccasarelesitedveturiant averse eceedasasraederieds yea ea deena 3 21 8 3 2 OUTER CHUTE ASSY wescacsccdvcsts cates saian cadence sas eaaa ENa aaa te vasari ENESE 3 22 8 4 FUSER COVER ASSY sirinin iene dei isis die a ane 3 23 8 4 1 FUSER COVER ASSY inrsin aia aeae sav aa aana inayat 3 23 8 4 2 EJECT ACTUATOR EJECT ACTUATOR SPRING cceeceeeeeeeeeeteeeeeneeeeeeeees 3 24 8 4 3 EJECT ROLLER ASSY 1 BUSH C BUSH R BUSH L eee 3 25 8 5 JOINT COVER SUB CHUTE ASSY 0000 eececcecceeeeeeeeeeeeeeeeeeeeeaeesecaeeeseaeeeccaeeeseaeeeseeeeseeees 3 26 8 6 INNER CHUTE ASSY secicesssecaies cepsccediiieneasieheviscc canto scuepasaned aE aE aaa cath Eaa Ea TEREA ERN 3 27 8 7 FUSER UNIT cierres ara reaa a raa e aa P a E n EEE E aidan 3 28 8 8 CORNER COVER vsvssciceceveccedarsnitecehdvsitpccidesvicectvevutdscandesyicedethiesaadeeeeediatieeeaetelsi RAAY 3 30 iv Confidential 8 9 8 10 8 11 8 12 8 13 8 14 8 15 8 16 8 17 8 18 8 19 8 20 8 21 8 22 8 23 8 24 8 25 8 26 8 27 SIDE COVER L ASSY SIDE COVER SUB L oo cece tenet eter etree tee e
84. Error Check the User Check items first If the same problem occurs follow each procedure in the order of the number described in the Step column in the table below Error code 50 Drum End Soon Replacement time of the drum unit The drum counter reached the upper limit User Check e Replace the drum unit with a new one Step Cause Remedy 1 Main PCB failure Replace the main PCB ASSY 1 7 Confidential E Error code 56 Cover is Open Close the Fuser Cover Fuser cover opened User Check e Check if the Fuser cover is closed correctly Step Cause Remedy 1 Harness connection failure of back cover switch ASSY Check the harness connection of the back cover switch ASSY and reconnect it Eject actuator failure Re assemble the eject actuator Eject sensor PCB ASSY failure Replace the eject sensor PCB ASSY Main PCB failure Replace the main PCB ASSY E Error code 58 Turn the power off Fuser Error then on again Leave the machine for 15 min Error code 59 Self Diagnostic Will Automatically Restart within 15 minutes If the same error is detected again 15 minutes later the message below is indicated Print Unable 6A See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure It occurs with either of 68 69 6A
85. LED Light Emitting Diode LV Low Voltage LVPS Low Voltage Power Supply N A Not Applicable NC Network Circuit NVRAM Nonvolatile Random Access Memory PF Paper Feed PP gear Pressure Plate gear ppm Page per minute PU Pick Up roller RAM Random Access Memory REGI Registration SOL Solenoid SP Spare Parts App 5 1 Confidential TE Toner Empty TN Toner TR Transfer Excluding the acronym shown on the wiring diagram or circuit diagram App 5 2 Confidential APPENDIX 6 REFERENCES This page provides the retrieval information It is possible to get the instruction of the subject by just clicking on the link below or refering to the relevent sections 1 Error indication Refer to 2 1 Error indication Chapter 1 of the Service Manual 2 Diameter of rollers Refer to 5 2 Diameter of Rollers Chapter 1 of the Service Manual 3 Machine specification Refer to 2 SPECIFICATIONS LIST Reference 1 of the Service Reference Manual 4 Paper specification Refer to 2 6 Paper Reference 1 of the Service Reference Manual 5 Toner cartridge weight information Refer to APPENDIX 1 TONER CARTRIDGE WEIGHT INFORMATION of the Service Reference Manual 6 Parts life reset Refer to Resetting the drum counter Chapter 5 of the Service Manual App 6 1 Confidential
86. LENOID T1 SOLENOID Oo f lt Left side gt Drive sub ASSY High voltage PS PCB ASSY lt Front side gt Registration solenoid T1 solenoid lt Left side gt Registration solenoid T1 solenoid 3 14 Confidential 7 DISASSEMBLY FLOW FRONT COVER ASSY 00s 00s ROLLER HOLDER ASSY 00s 00s FAN MOTOR 60 UNIT 00s 00s COVER SENSOR HARNESS ASSY 00s 00s TONER LED PCB ASSY LED HOLDER 00s 00s WIRELESS LAN PCB ASSY 00s 00s LVPS PCB UNIT 00s 00s LV SHIELD PLATE 2 00s 00s REGISTRATION FRONT SENSOR PCB ASSY 00s 00s CORNER COVER 00s 00s SIDE COVER L ASSY 00s 00s SIDE COVER R ASSY 00s 00s JOINT COVER ASSY 00s 00s FILTER ASSY 00s 00s LASER UNIT 00s 00s MAIN FRAME L ASSY 00s 00s REGISTRATION REAR SENSOR PCB ASSY 00s 00s INNER CHUTE ASSY 00s 00s FUSER UNIT 00s 00s MAIN SHIELD COVER PLATE oos oos e ADF UNIT 00s 00s HIGH VOLTAGE PS PCB ASSY 00s 00s DRIVE SUB ASSY 00s 00s DEV JOINT 00s 00s TONER SENSOR PCB UNIT ASSY 00s 00s e DEV GEAR JOINT 53R 00s 00s 3 15 BACK COVER 00s 00s FUSER COVER ASSY 00s 00s OUTER CHUTE ASSY o0s 00s EJECT ACTUATOR SPRING EJECT ACTUATOR 00s 00s DOCUMENT SCANNER UNIT 00s 00s
87. Note When replace the main PCB the function of the FAX disappears Contact the customer to download the FAX again 3 67 Confidential 8 23 JOINT COVER ASSY PAPER SUPPORTER 1 Remove the five Taptite bind B M4x12 screws 2 Release the Hook to remove the Joint cover ASSY from the Main body Hook Taptite bind B Taptite bind B Taptite bind B M4x12 SK Taptite bind B M4x12 3 68 Confidential 3 Release the Boss to remove the Paper supporter from the Joint cover ASSY Paper supporter Joint cover Fig 3 68 3 69 Confidential 8 24 HIGH VOLTAGE PS PCB ASSY 1 Disconnect the two Connectors from the High voltage PS PCB ASSY 2 Remove the two Taptite cup S M3x6 SR screws and the two Taptite bind B M4x12 screws 3 Release the Hook to remove the High voltage PS PCB ASSY from the Drive sub ASSY Taptite bind B M4x12 Taptite cup S M3x6 SR RE a a Drive sub ASSY Connector High voltage PS PCB ASSY Fig 3 69 Note There are procedures for disassembling Main frame L ASSY after this procedure 8 39 MAIN FRAME L ASSY 3 70 Confidential 8 25 NEW TONER SENSOR HARNESS ASSY 1 Release the Hook to remove the New toner sensor harness ASSY from the Main body A _ YJ l 0 Cet i Qe Na Q A eat ot i lt Left side gt L S New toner sensor harness ASSY Z Hook New toner sensor harness
88. O Selection of judging function for simple scanning pages compensation Not used Judges according to the change rate Not judges Judges every page Selection of judging function for regular scanning pages compensation Not used Judges according to the change rate Not judges Judges every page 00N 000a ot o0o0jo o0O0 Selectors 1 through 4 Change rate of the CCD light intensity for scanning pages compensation Not used The light intensity of the CCD unit may be changed decreased especially and difference of density may appear among the scanning pages if continuous copying or scanning is implemented from the ADF for a long time To prevent the above in simplex copying or scanning from the ADF the machine checks the change rate of the light intensity in every page Then it takes the compensation data again if the rate is over the set value These selectors set the change rate of the light intensity to control such operations Change rate for simple compensation Change rate when compensating the pages using the standard data in the machine memory without moving the CCD unit to the designated position for scanning of the compensation data Change rate for regular compensation Change rate when compensating the pages with moving the CCD unit to the designated position for scanning of the compensation data and obtaining the data actually For duplex scanning this setting is not used sin
89. ON LIST WSwal 88800018 eh DIAL FORMAT 5 6 INTERDIGIT Pase DP PB CHANGE IN USER SW 8 DP PE FIXING SELECTION WSW82 11111010 1 2 ON Te 3 4 OFF 5 8 Dike Beep ATTENUATOR WSw83 10110000 1 PARA CNG DETECTION1 A 4 NOT USED _ PARA CNG DETECTION2 ze NOT USED wSwad 60810116 1 4 NOT USED 5 OGM DELAY 4SEC 6 8 FLASHING TIME wewes 00000110 1 3 DIAL TONE DETECT TE ID DETECTION T IMEOQUT Ea 6 BUSY TONE DETECTION CALLING 7 BUSY TONE DETECTION CALLED 8 NOT USED ee 98181188 4 6 OND DT DETECTION ae z 2ND DT DETECTION CYCLI 2ND DT INTERRUPT DETECTION TIME wie peas 2 FREQUENCY NOT USED 5 4 6 29 o DETECTION LEVEL i TT INTERRUPT DETECTION TIME wiieg 81108111 3 1ST DT DETECTION TIME ig 1ST 2ND DT TIME 8 1ST DT DETECTION LEVEL vsta eet cen 00 M FRAME NON RTANDARD I FACILITIES 5 4 TIMES OF Fi 5 T5 TIMER 6 T1 TIMER 7 8 CALLING TIMEOUT wawi 00010100 IT USED imme OF LAST DIGIT MODEM 3 CHANGE 3 TIMING OF CML ON CNG TRANSMISSION 4 TIMING OF CML ON CED TRANSMISSION 5 6 TRAINING RETRIES 7 CODING METHOD MR 8 CODING METHOD MMR Ww 9181188 3 8 ON OFF TIME WSW12 16811811 1 gt 2 OFF DETECTION TIME 3 4 AUTO ANS OFF DETECTION TIME pa Ee See peeraa TIME 8C5 C83 U8786281358VER T 5 88 SUM E6E6 SER G7J888241 OFF 588 MS 3 5 SEC WAITING 2 SEC AFTER DIALING gt OFF 3 5 SEC WAITING 888 MS 1
90. Orother Laser Multi Function Center SERVICE MANUAL MODEL DCP 7030 7040 7045N MFC 7320 7340 7440N 7450 7840N 7840W Read this manual thoroughly before carrying out any maintenance work Keep this manual in a convenient place for quick and easy reference at all times Jan 2008 SM FAX088 8C5C Confidential Copyright Brother Industries Ltd 2008 Compilation and Publication This manual has been complied and published under the supervision of Brother Industries Ltd covering the latest product descriptions and specifications The contents of this manual and the specifications of this product are subject to change without notice Brother reserves the right to make changes without notice in the specifications and materials contained herein and shall not be responsible for any damages including consequential caused by reliance on the materials presented including but not limited to typographical and other errors relating to the publication This product is designed for use in a professional environment Confidential PREFACE This service manual contains basic information required for after sales service of the Laser Multi Function Center hereinafter referred to as the machine This information is vital to the service personnel to maintain the high printing quality and performance of the machine This service manual covers the DCP 7030 7040 7045N MFC 7320 7340 7440N 7450 7840N 7840W machines This manu
91. PCB ASSY Rear Fuser Registration front sensor Edge sensor Registration front sensor PCB ASSY Toner sensor New toner sensor harness ASSY Registration rear sensor Registration rear sensor PCB ASSY Fig 5 7 5 17 Confidential lt Function gt 1 4 11 PC Print Function setting Function code 32 Can charge functions such as the switching of the manual paper feed tray and the recording paper tray or the switching of the resolution Note Do not work even if enter the maintenance mode during processing of the PC Print or Fax Share Can work after having performed the PC Print or Printed the PrintSetting FontList NetWorkConfig if enter the maintenance mode The choices are different whether support the PCL PS lt List of Function gt Model with PCL PS Tp Initial Function Description Set value S Manual Feed Switching of the Manual Feed On Off Off Resolution Resolution to print 300 600 1200dpi 600 Toner Save Switching of the Toner Save On Off Off Density Switching of the Density level 6 to 6 0 Sleep Time Setting of the time until enter the SleepMode for 0 to 99 minutes 5 the engine Pege Protection Switching of the protection of the page memory Off Letter A4 Legal Auto Off Emulation Switching of the Emulation Auto HP PS Auto Auto I F Time Switching of the I F open time 1 to 99 seconds 5 Media Type
92. PS Function Description Set value es Manual Feed Switching of the Manual Feed On Off Off Sleep Time Setting of the time until enter the SleepMode for 0 to 99 minutes 5 the engine Auto I F Time Switching of the I F open time 1 to 99 seconds 5 P Pos X Offset Switching of the offset print position of the 500 to 500 1 300dpi 0 landscape orientation P Pos Y Offset Switching of the offset print position of the 500 to 500 1 300dpi 0 portrait orientation lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 4 and 3 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 43 appears on the LCD and then press the OK button Manual Feed appears on the LCD 2 Press the A or W button The item to change is displayed on the LCD and press the OK button 3 Press the A or W button or charge the parameter using the numeric keys And press the OK button parameter value is confirmed lt Function explanation gt Function Set value Problem MANUAL FEED ON OFF Configure the setting for the ON OFF of the manual paper feed Effective for the print from the PC or for the print of the NetWorkConfig TestPrint Fontlist Configuration from the panel When select the tray on the PC the setting becomes effective And this setting is ignored Default OFF RESOLUTION 300 600 1200 Configure the s
93. RODUCT GEFAHR UNSICHTBARE LASERSTRAHLUNG WENN GEGFFNET UND VERRIEGELUNG DIREKTEN KONTAKT MIT DEM LASERSTRAHL VERMEIDEN LASERGERAT MLASSE SE 3B DANGER RAYONNEMENT LASER INVISIBLE LORSQUE L APPAREIL EST OUVERT OU ENDOMMAGE EVITER TOUTES DIRECTES AU FAISCEAU PRODUIT LASER DE CLASSE 38 VARNING OSYNLIG LASERSTRALNING NAR DEN HAR DELEN AR PPNAD OCH SP RRAR AR URKOPPLADE UNDVIK DIREKT EXPONERING A Cire KLASS 38 LASERAPPARAT FARE USYNUG LASERSTRALE NAR MASKINEN ER PEN OG DIREKTE EKSPONERING AV LASERSTRALEN KLASSE 3B LASER LASER PRODUI PRODUKT ATTENTIE ONZCHTBARE LASER STRALING BI OPENING EN OMZEILDE BEVEILIGING VOORKOM DREETE B cla NS AAN STRAAL KLASSE 38 LASER PRODUCT ISYNLIGE LASERSTRALER HVIS rae ABNER OG SAMTIDIGT BLOKERER FARE LASEN UNDGA LASERSTRALERNE KLASSE S6 LASERPRODUKT i EMISION DE RADIACIGN LASER INVISIBLE CUANDO SE ENCUENTRA iPELIGRO ie ABIERTO Y DESBLOQUEADO EVITE LA EXPOSICI N DIRECTAAL HAZ PRODUCTO LASER DE CATEGOR A 38 LAE TAAUA TASSSh JA SUOJALUKITUSTA VAROITUS Uirrcesta LAHTEE NAKYMATONTA LASERSATELYA VA VARO ALTISTUMASTA SUORAAN S TEELLE LUOKAN xii Confidential E Definitions of Warnings Cautions Notes and Memos The following conventions are used in this manual Mark Contents A Warnings tell you what to do to prevent possible personal injury Ay Electrical Hazard icons alert you to a possible electrical shock A Hot Surface icons warn you not to touch machin
94. SY 2 Remove the two Taptite cup B M3x10 screws and then remove the Drive frame ASSY from the Lower document chute ASSY 3 Remove the Harness holder from the Lower document chute ASSY Lower document chute ASSY Harness holder FG harness Taptite cup S M3x6 SR ADF harness unit ADF harness unit Drive frame ASSY Lower document chute ASSY Harness holder Taptite cup B M3x10 Fig 3 40 3 45 Confidential 8 11 12ADF MOTOR 1 Remove the Taptite bind S M3x6 screw and then remove the ADF motor from the Drive frame ASSY 2 Remove the ADF harness unit from the ADF motor ADF motor Drive frame ASSY ADF motor PEREA a ADF harness unit Taptite bind S M3x6 Fig 3 41 3 46 Confidential 8 11 13PRESSURE ROLLER ASSY 1 Release the Hook to remove the Pressure roller ASSY from the Document cover sub ASSY 2 Remove the two Pressure rollers from the Pressure roller shaft 3 Remove the Pressure roller spring from the Document cover sub ASSY Pressure roller f Co 2 QO roller shaft s Pressure roller ASSY x a X t Pressure roller a c Pressure roller spring Fig 3 42 CAUTION Be careful not to get grease on the roller 3 47 Confidential 8 11 14_DOCUMENT STOPPER 1 Open the Document stopper 2 Release the Boss to remove the Document stopper from the Document dress cover Document stopper Document dress cover Fig
95. Selectors 1 through 8 Change rate of the CCD scanning light intensity to judge to be stable Not used The light intensity of the CCD unit is changed widely immediately after the light source is on that influences scanning density Therefore the first scanning after the light source is off and on is started after the change rate of the CCD light intensity is stabilized in the definite range These selectors set the change rate to start the scanning operation above If you want to start scanning immediately even if the image quality is not good set the rate to high Long short time mode The selectors are divided between the long and short time modes depending on the scanning resolution and black and white or color mode The long time mode is selected in color scanning at 600dpi or more or in black and white scanning at 1200dpi The short time mode is selected in other scanning conditions than the above App 1 64 Confidential lt WSW62 gt Selector No Function Setting and Specifications Change rate Change rate for simple for regular compensation compensation 3 10 3 7 3 15 3 20 3 25 5 10 5 15 5 20 5 25 7 15 7 20 7 25 10 15 10 20 10 25 15 30 Default N amp iN Change rate of the CCD light intensity for scanning pages compensation Not used sa oa oa oss ui QOaodoodoooo ooo oe a a a oo ono a a oOor fjH oaoo0o0dH fH aoe0o0 a OO O 0202020200
96. Switching of the recording paper type Refer to function Plain 1 explanation Paper Size Switching of the area of develop the image Refer to function Letter 2 explanation Copies Switching of the print copies 1 to 99 pages 1 Orientation Switching of the print direction PortLait Landscape Portlait P Pos X Offset Switching of the offset print position of the 500 to 500 1 300dpi 0 landscape orientation P Pos Y Offset Switching of the offset print position of the 500 to 500 1 300dpi 0 portrait orientation AutoFF Switching of the auto form feed On Off Off AutoFF Time Switching of the time out period of the auto feed 1 to 99 seconds 5 FF Surpress Switching of the FF Surpress On Off Off Auto LF Switching of the auto LF On Off Off Auto CR Switching of the auto CR On Off Off Auto WRAP Switching of the auto WRAP auto CRLF at the On Off off print width Auto SKIP Switching of the auto SKIP SKIP at the back On Off On end tip of the recording paper Left Margin Switching of the margin at the left end 0 to 145 columus 0 Right Margin Switching of the margin at the right end 10 to 155 columus 80 Top Margin Switching of the margin at the upper end 0 to 2 00 inches 0 5 Bottom Margin Switching of the margin at the bottom end 0 to 2 00 inches 0 5 Lines Number of the text lines in the page 5 to 128 lines 60 Error Print Switching of the Error Print of the Post Script On Off On 5 18 Confidential Model without PCL
97. XX 00000000 3 Use the lt and gt buttons to move the cursor to the selector position to be modified 4 Enter a value to be set 0 or 1 using the 0 and 1 buttons 5 Press the OK button This operation saves the newly entered selector values onto the EEPROM and readies the machine for accepting a firmware switch number 6 Repeat steps 2 through 5 until the modification for the desired firmware switches is completed 7 Press the Stop Exit button to return the machine to the initial stage of the maintenance mode Note e To cancel this operation and return the machine to the initial stage of the maintenance mode during the above procedure press the Stop Exit button e If there is a pause of more than one minute after a single digit number is entered for double digit firmware switch numbers the machine will automatically return to the initial stage of the maintenance mode 5 10 Confidential DCP7045N 7040 7030 1 Press the A or Ww button several times The machine displays the MAINTENANCE 10 on the LCD and becomes ready to accept a firmware switch number 2 Press the A or W button several times The machine displays that the desired number from the firmware switch numbers 01 through 63 and the press the OK key The following appears on the LCD Selector 1 Selector 8 WSWXX 00000000 3 If press the A button it is changed to 1 And press the W button it is changed to 0 in the state that
98. Y and then remove the Front cover ASSY from the Main body Front chute ASSY Boss Front chute ASSY S o Front cover top Front cover top j Hook e Front cover ASSY 3b Front chute ASSY Fig 3 10 3 19 Confidential 8 2 2 PAPER STOPPER L PAPER STOPPER S 1 Release the Boss to remove the Paper stopper L from the Front cover ASSY 2 Release the Boss to remove the Paper stopper S from the Paper stopper L Paper stopper L Front cover ASSY Paper stopper L Fig 3 11 3 20 Confidential 8 3 BACK COVER OUTER CHUTE ASSY 8 3 1 BACK COVER 1 Open the Back cover 2 Release the Boss of the Outer chute ASSY from the Back cover 3 Release the Hook from the Side cover R ASSY 4 Slide the Back cover from the Main body and remove it Back cover Back cover Outer chute ASSY Back cover Fig 3 12 3 21 Confidential 8 3 2 OUTER CHUTE ASSY 1 Release the Boss to remove the Outer chute ASSY from the Main body Boss Fuser cover ASSY Outer chute ASSY Outer chute ASSY Fig 3 13 3 22 Confidential FUSER COVER ASSY FUSER COVER ASSY 8 4 8 4 1 1 Pull down the Fuser cover ASSY 2 Remove the Fuser cover ASSY from the Main body w v A i 1 1 1 ZAI i We 1 1 1 7 Me lt 1 s Fuser cover ASSY Fig 3 14 Con
99. actuator or paper front actuator registration rear actuator or eject actuator not operating smoothly paper eject actuator and ensure they are or catching in some position not catching in any positions Paper eject sensor PCB failure Check the sensor performance following 3 the procedure described in Maintenance mode 32 If any problem occurs replace the eject sensor PCB ASSY Registration front sensor PCB Check the sensor performance following 4 failure the procedure described in Maintenance mode 32 If any problem occurs replace the registration front sensor PCB ASSY Registration rear sensor PCB Check the sensor performance following 5 failure the procedure described in Maintenance mode 32 If any problem occurs replace the registration rear sensor PCB ASSY 6 Registration ground spring failure Re assemble the registration ground spring Refer to Fig 1 3 7 Main PCB failure Replace the main PCB ASSY IPO Ti je 7 E af vy OJ Th Registration ground lt Main frame R ASSY gt spring Fig 1 3 Confidential
100. age CIStOMION scroroireoinn ina E EO ONE 1 44 Te SOFTWARE SE THNG PROBLEMS sssicrccviesetectccsdaaaieistacetssaritudecunintnensdatadasalsaviat xeeeainieennees 1 45 By NETWORK PROBLEMS isaseccesesioscecncus naea e E a a Ea N E 1 46 9 TROUBLESHOOTING OF THE COMMUNICATIONS ERROR seesieseiserrierrrrerrresrersnns 1 47 10 Troubleshooting of Ihe control panel sessesessessyesdeceseyscede ves viedcatany ie deentin teced annus sae aneas a 1 51 T1 Troubleshooting Ol Tare TUMCUONS racaio ve ratateh his tae tiea a oie cates 1 53 T2 OTHERS PROBLEMS actexretscadecczdsacccexsecvnstervstaneteset Savateccaadenswtep nas tetsees ptenasersnatuedtersiutastteciteusaste 1 57 CHAPTER 2 PERIODICAL MAINTENANCE eccceeeeeeeseeeeeeeeeeseeeeeeeeenseees 2 1 12 CONSUMABLE PARTS erisip anesan a a deren oN aaa N ardaoa ea 2 1 2 PERIODICAL PEPLACEMENT PARTS ccsigesterteiestlieaavicaehynci ae aaa ene canines 2 2 CHAPTER 3 DISASSEMBLY AND ASSEMBLY ccccsssesseeeeeeeeesseeeeeeeeeeeees 3 1 1 SAFETY PRECAUTIONS oie estes secc cits tenaa E AE O A ee 3 1 2 PACKING ceren aE a lc e a ete RE 3 2 9 SCREW TORQUE LIST ca ceure cece aps a a A 3 3 A EUG ATO IN ccenn E ER e a a a eaa 3 5 Be OVERVIEW OF GEAR Sn Se N we cua aaaces 3 8 Be HAINES S ROUTING sersan A aE EE EE aS 3 9 7 DISASSEMBLY FLOW usnnanedar an tive ate E Sle uatarane 3 15 8 DISASSEMBLY PROCEDURE nizan ionan oea aaa AEE a oiai 3 16 8 1 SEPARATION PAD ASSY cainii oaaae EEA AERE 3 17 8 2 FRONT COV
101. al lt WSW22 gt Selector No Function Setting and Specifications 1 ECM in sending 0 Valid 1 Invalid 2 ECM in receiving 0 Valid 1 Invalid 3 Call Waiting Caller ID 0 Displayed 1 Not displayed 4 Not used 0 0 1 8 gt Acceptable TCF bit error rate ae tie 0 0 1 4 Only at 4800 bps 0 0 42 Not used aa en 8 0 0 1 1 ECM Error correction mode Note e Selector 3 is applicable to the American models only e Selectors 5 through 8 are applicable to the Chinese Taiwanese and Asian models only e Selector 3 Call Waiting Caller ID Setting this selector to 0 allows the user to decide whether or not to interrupt the current call when a new call comes in If Call Waiting Caller ID service is available in the area and the user subscribes to it he she can see information about his her incoming call on the LCD e Selectors 5 through 8 Acceptable TCF bit error rate Not used Setting two or more selectors to 1 produces addition of percent assigned to each selector If you set selectors 7 and 8 to 1 the acceptable TCF bit error rate will be 3 App 1 27 Confidential lt WSW23 gt Selector No Function Setting and Specifications i Starting point of training check 0 0 From the head of a series of zeros TCF 1 From any arbitrary point No 2 3 0 0 0 Allowable training error rate 0 1 05 1 0 1 1 1 2 No 4 5 Decoding error rate for 0 o oa transmis
102. al consists of the following chapters CHAPTER 1 TROUBLESHOOTING Details of error messages and codes that the incorporated self diagnostic function of the machine will display if any error or malfunction occurs If any error message appears refer to this chapter to find which parts should be checked or replaced The latter half of this chapter provides sample problems that could occur in the main sections of the machine and related troubleshooting procedures CHAPTER 2 PERIODICAL MAINTENANCE Details of consumable parts and periodical maintenance parts This chapter also covers procedures for disassembling and assembling periodical maintenance parts CHAPTER 3 DISASSEMBLY AND ASSEMBLY Details of procedures for disassembling and assembling of the machine together with related notes The disassembly order flow provided enables you to see at a glance the quickest way to get to parts involved At the start of a disassembly job you can check the disassembly order flow that guides you through a shortcut to get to the object parts This chapter also covers screw tightening torques and lubrication points to which the specified lubrications should be applied during assembly jobs CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT Details of adjustments and updating of settings which are required if the main PCB and some other parts have been replaced This chapter also covers how to update the firmware
103. ance Po Ready to use i V Brother Maintenance Pri Ready to use 8 Connect the machine to your PC using the USB cable 9 Select Install the software automatically Recommended and click Next Found New Hardware Wizard This wizard helps you install software for Brother Maintenance USB If your hardware came with an installation CD QE or floppy disk insert it now What do you want the wizard to do O Install from a list or specific location Advanced Click Next to continue 4 3 Confidential 10 An alert warning message of WHQL appears Click Continue Anyway to proceed Hardware Installation The software you are installing for this hardware Brother Maintenance USB has not passed Windows Logo testing to verify its compatibility with Windows XP Tell me why this testing is important Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microsoft strongly recommends that you stop this installation now and contact the hardware vendor for software that has passed Windows Logo testing Continue Anyway Found New Hardware Wizard Please wait while the wizard installs the software rad Brother Maintenance USB 2 BS Setting a system restore point and backing up old files in case your system needs to be restored in the future 11 If the Brother Maintenance USB Printer
104. ard one and high capacity one Therefore it is necessary to set the conformable value to the toner cartridge installed in the machine following the steps below lt Procedures gt 1 Select Set Starter count Set Standard count or Set High Capa count from Menu according as the currently used toner cartridge Note e It is impossible to set more than two types of the toner cartridge e If selecting more than two types the NG message is displayed 2 Check ON in the check box at the right hand side Click the OK button All of the settings are completed Turn off the power supply of the machine Printer Information You can use this tool only when your printer is connected to a parallel port Select the LPT port 1 3 or the USB you are using and click OK LPT CET IEIS USB Reset Drum Counter r ON Set Standard count Set High Capa count MFC7B40W Cancel E Backup to the Main PCB of the Wireless LAN PCB Information MFC7840W only 1 Turn the power supply of the machine on while pressing the A and OK button at the same time Hold on the A and OK button while pressing it PLEASE WAIT is displayed on the LCD When continue pressing the A and OK button CHECK START is displayed on the LCD AT this time release the two buttons 2 After having passed for a while WLAN MODULE OK is displayed on the LCD Turn the power supply of the machine off after
105. arness from the Main body 2 Remove the Taptite cup S M3x6 SR screw and then remove the Main shield cover plate from the Main body FG harness ADF Taptite cup S M3x6 SR Taptite cup S M3x6 SR FG harness FB Fig 3 26 3 32 Confidential 8 11 ADF UNIT 8 11 1 ADF UNIT 1 Remove the two Connectors from the Main PCB ASSY Connector lt Back Side gt Main PCB ASSY Fig 3 27 Confidential 3 33 2 Open the ADF unit 3 Remove the Taptite bind B M4x12 screw from the Hinge ASSY L 4 Release the Hook of the Hinge R to remove the ADF unit from the Main body RA ADF unit Hinge ASSY L Taptite bind B M4x12 Fig 3 28 3 34 Confidential 8 11 2 HINGE R HINGE ARM HINGE ASSY L 1 2 3 Remove the Hinge R from the Hinge arm Remove the Taptite bind B M4x12 screw and then remove the Hinge arm from the ADF unit Remove the two Taptite cup B M3x10 screws and the Taptite cup S M3x12 screw and then remove the Hinge ASSY L from the ADF unit ADF unit Hinge arm Hinge R Taptite bind B M4x12 Taptite cup S M3x12 Hinge ASSYL Taptite cup B M3x10 Fig 3 29 3 35 Confidential 8 11 3 ADF COVER ASSY 1 Open the ADF cover 2 Release the Boss to remove the ADF cover from the ADF unit ADF cover ADF cover S Boss ADF cover a Y _ SA 2a il ees E A ADF unit Boss 7 ss f s I D INS s ay
106. b3168 89755170 8973189 FEE Beat oat eas EE Borbsiee 88 83 89 83 EE rarata AEE Fig 5 1 5 5 Confidential 1 4 3 1 4 4 Placement of CIS Unit in Position for Transportation Function code 06 lt Function gt This function is to move the CIS unit in position for transportation located at the left end When you fix the machine and check its operation you need to perform this function last before packing and shipping Note Please instruct end users to perform this function if possible before packing and shipping their FAX machine to a sales agent or a service dealer for the purpose of repair For the procedure to allow users to perform maintenance modes refer to 1 2 How to Enter the End User accessible Maintenance Mode in this chapter lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 0 and 6 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 06 appears on the LCD and then press the OK button The CIS unit moves to the designated position for transportation located at the left side The MAINTENANCE 06 is displayed until the CIS unit is placed in position When the scanner unit is placed in the position the SCAN LOCK appears on the LCD 2 Press the Stop Exit button The machine beeps for one second and returns to the initial stage of the maintenance mode Note e If itis impossible to mo
107. batusssvesscenteatovateskivendccterkcasacendwcuade xii CHAPTER1 TROUBLESHOOTING ssssssssssnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnennnnnnnnnnnn 1 1 1s INTRODUCTION sercsieni anaa e a a ede 1 1 VA Precaulons serret iraniane E EREE 1 1 12 Pannamos sesicnrsnciisimiarii ara ir ana a N EAE EEEE EEEE NEEE 1 2 1 3 Initial GOGK iisisti or aaea e aa a a aaa aated aiaa ga aaah naea aE 1 4 2 ERROR CAUSE cridier EE a Oae a AE a ROETE e a Ea ahs 1 6 2J EMrOr indiCatiOn ieaoo Ea EEEE EE IRE N 1 6 2 2 Error Code Cause and Remedy ccecccececeeeeeeeeeeneeeeeneeeseaeeeeeaeeeseaeeeseaaeeseaeeteeesteeeenes 1 7 2 2 1 Recoverable User Check Errors c ccccccceeeeceeeeeneeeceeeeeecaeeeeeaeeeseaeeeseeeseeeeeeseneeeee 1 7 2 2 2 Service Call Erot risikere sanea aea a eaaa D Raa ENNE EAEE 1 7 3 PAPER FEEDING PROBLEMS jicescustehevcnneyailececsestelalcacvnse Ee oE aR vale EEN EA EEEE REAREN 1 23 Bel NOS FOGGING sessin AE AREA ES ANE AAE Na ER 1 23 g2 Double Feeding sssrreroiisrinidenerani annenin eaan aan ibra Aa iaae EEEa Aay aa iai 1 23 39 PADS DAMM ooon E O EA 1 24 34 Diton Papar seseesedevevesscecesrs ss ceuvesveeetvecuesesdeeeesyaeceuent E E KENEN RAN E EERENS S 1 25 3 5 Wrinkles or CrEASES 00 2 secs eeeeeeceeeeeeee cece eeeeaeeee ene aaeeeeeeeaaaaeeeeseaaaeaeeesagaeeaeesesnaaeeeesenseeaeeess 1 25 3 6 Waves in the paper folds in the paper at the eject roller 2 nsure 1 25 3 7 Curlin the paper sirensis avta iranan adren a wenn rU aaa aTa as
108. bed below lt WSW01 gt Selector No Function Setting and Specifications Zz o N Dial pulse generation mode N 2 0 1 0 1 4 0 60 ms O length in pulse 1 67 ms 0 40 ms 1 6 0 1 0 1 64 ms for 16 PPS 800 ms 850 ms 950 ms for 16 PPS 600 ms at 106 ms intervals Inter digit pause 0 0 1 1 3 0 0 1 1 5 0 0 1 1 Switching between pulse and tone dialing by the function 0 Yes No switch Default dialing mode pulse DP or tone PB dialing 0 PB 1 DP e Selectors 1 and 2 Dial pulse generation mode These selectors set the number of pulses to be generated in pulse dialing N Dialing N generates N pulses Dialing O generates 10 pulses N 1 Dialing N generates N 1 pulses 10 N Dialing N generates 10 N pulses e Selectors 3 and 4 Break time length in pulse dialing These selectors set the break time length in pulse dialing Example If 1 2 and 3 are dialed when N is set by selectors 1 and 2 Break time length set by _ selectors 3 and 4 lt gt gt gt App 1 3 Confidential e Selectors 5 and 6 Inter digit pause These selectors set the inter digit pause in pulse dialing Example If 1 2 and 3 are dialed when N is set by selectors 1 and 2 4 o E g Inter digit pau
109. ber SN transmission enabled disabled Extension of waiting time between the ANSam DIS 0 Valid 1 Invalid Not used e Selector 1 Frame length selection This is intended to prevent the problem of a continued increase in USB ports when serial numbers are transmitted from the MFC to a Windows Vista based PC It is intended only to prevent a problem specific to Windows Vista its default setting is 0 USB SN enabled e Selector 2 Extension of waiting time between the ANSam DIS When send from the G3 to the FAX machine of the G4 extend the waiting time between the ANSam DIS from 75ms to 450ms in expectation of the switching time of the echo canceller of sending side its default setting is 0 Valid lt WSW60 gt Selector No Function Setting and Specifications Not used App 1 63 Confidential lt WSW61 gt Selector No Function Setting and Specifications Zz o 2 3 0 1 Default 0 0 5 0 3 Change rate of the CCD 0 scanning light intensity to judge 1 to be stable in the long time mode Not used 5 10 15 20 1 1 1 100 Scans immediately after the light source ON 7 0000000 5 Default 1 3 10 15 20 30 1 1 100 Scans immediately after the light source ON Change rate of the CCD scanning light intensity to judge to be stable in the short time mode Not used O000000 01 e
110. bject around feed around the feed roller 2 roller paper paper eject roller Yes eject roller actuator actuator 3 Pinch roller of Is pinch roller of feed Yes Re assemble the pinch feed roller failure roller remove roller of the feed roller Pinch roller of Is pinch roller of paper Re assemble the pinch 4 paper eject roller eject roller remove Yes roller of the paper eject failure roller 5 Pressure roller Does pressure roller film Yes Replace the pressure roller film unstick unstick film ADF sensor PCB Is the problem solved by Replace the ADF sensor 6 replacing the ADF Yes PCB sensor PCB ADF motor Is the problem solved by Replace the ADF motor 7 failure replacing the ADF Yes motor Drive frame Is the problem solved by Replace the drive frame 8 ASSY failure replacing the drive Yes ASSY frame ASSY Main PCB failure Is the problem solved Replace the main PCB 9 after replacing the main Yes ASSY PCB ASSY 1 28 Confidential 5 5 1 5 2 Image Defect Examples Ei ED iro Faulty registration Dark Image distortion Dirt on the back of paper a A zi E han Black vertical streaks Black horizontal White vertical in a light background stripes streaks White spots Black spots Black band TS D F fe 2 e a e Fig 1 5 CAUTION The image defect at the copy might have the cause in the scanning Be Poor fixing Ae
111. board the cordless handset ID number registered on the main board will be automatically written onto the cordless board Selectors 5 and 6 Caller ID tone alert detection time length In the event of a false detection of a caller ID tone alert adjust the detection time length Selector 7 Caller ID mild pulse transmission Not used If a caller ID number display cannot be displayed due to mild pulses transmitted after detection of tone alert use this selector so as to make it impossible to transmit mild pulses App 1 59 Confidential e Selector 8 Switching between DTMF and FSK for caller ID reception Not used If a caller ID number display cannot be received switch from DTMF to FSK This operation can also be performed by means of the menu by switching between DTMF and FSK lt WSW55 gt Selector No Function Setting and Specifications 0 The developing bias voltage correction is performed on each print job 1 1 72 The developing bias voltage Interval oO time required Iar correction is performed when a l the developing bias voltage eae te print job occurs at specified correction hour 8 time or later 73 254 Not allowed to set 255 OxFF The developing bias voltage correction is not performed The setting example of the selector number is as follows No1234567 8 00000 0 0 0 The developing bias voltage correction is performed on each print job 0001100 O The developing bias vol
112. ce the machine takes the compensation data of every page again App 1 65 Confidential e Selectors 5 and 6 7 and 8 Selection of judging function for scanning pages compensation Not used These selectors set the condition to control scanning pages compensation Some operation losses occur in the control of the compensation If you want to start scanning immediately even if the image quality is not good set to 01 Not discriminates If you want to give priority to the image quality even though losses are increased select one of others 00 Discriminates depending on the rate of change or 10 Discriminates every page lt WSW63 gt Selector No Function Setting and Specifications Not used App 1 66 Confidential APPENDIX 2 DELETION OF PERSONAL INFORMATION The personal information in the machine is recorded in the EEPROM on the main PCB It cannot all be deleted in a single operation Use Function code 01 in the maintenance mode unplug the AC cord from the electrical outlet and disconnect the backup battery E Operating Procedure 1 Using Function code 01 Using Function code 01 EEPROM Parameter Initialization in the maintenance mode deletes the following data that have been recorded in the EEPROM on the main PCB e Activity report e Station ID data e Outside line number e One touch dialing e Speed dialing e Group dialing e Call transfer data lt Operating Procedure gt 1 P
113. cedures 4 1 Confidential E Rewriting the firmware Main Program lt Installing the maintenance printer driver gt To identify terminals connected via USB interface the PC requires the corresponding virtual USB devices to be implemented by the driver If you connect a number of machines to your PC the same number of virtual USB devices will be automatically configured on your PC To prevent virtual USB devices from being configured limitlessly use the unique driver installation procedure described below that enables your PC to identify terminals via single virtual USB device Once this installation procedure is carried out for the PC no more driver installations will be required for that PC to identify machines If BHL2 Maintenance Driver is already installed to your PC fully uninstall the BHL2 Maintenance Driver before installing Brother Maintenance USB Printer Driver 1 Check that the power switch of the machine is turned off Disconnect the USB cable that connects the machine with PC 2 Turn on your PC and machine 3 Press the buttons in the following order Menu Start and the A button four times to make the machine enter the maintenance mode Refer to 1 1 How to Enter the Maintenance Mode in Chapter 5 4 Click the maintenance exe of the Printer Maintenance Driver which has been copied in the ALL2 folder to start 5 The following screen appears indicating the detection of device installation wizard C
114. cept in the external TAD mode or via the built in telephone The machine interprets a CNG as an effective signal if it detects the CNG by the number of cycles specified by these selectors when the line is connected via the external telephone except in the external TAD mode or via the built in telephone Selectors 6 and 7 No of CNG cycles to be detected when the line is connected via the external telephone in the external TAD mode via the built in telephone in the TAD mode or via the machine in the automatic reception of the F T mode The machine interprets a CNG as an effective signal if it detects the CNG by the number of cycles specified by these selectors when the line is connected via the external telephone in the external TAD mode via the built in telephone in the TAD mode or via the machine in the automatic reception of the F T mode App 1 31 Confidential lt WSW27 gt Selector No Function Setting and Specifications 1 Not used 2 Ringer OFF setting 0 Yes 1 No Automatic playback of OGM 3 when switched to the TAD mode 0 No 1 Yes Not used Detection of distinctive ringing pattern Not used OYES ce Not used Recording quality Not used 0 Normal 1 High Recording time for high i f 7 recording quality Not used 0 Short 9 6 kbps 1 Long 8 8 kbps 8 Not used Note Selectors 4 and 5 are applicable to the U S A models only e Selector 2 Ringer OFF setting Not u
115. cover while the power supply of the machine is ON after check the LCD of the above mentioned 2 MFC7840W 7840N 7450 7440N 7340 7320 Press the Clear Back button DCP7045N 7040 7030 Press the Clear Back button Replace Drum 1 Yes 2 No appears on the LCD 3 MFC7840W 7840N 7450 7440N 7340 7320 Press the 1 button DCP7045N 7040 7030 Press the A button 4 Close the front cover Note When the counter of the drum replacement number of times print more than 100pieces after reset the drum counter Rise in the counter value 5 35 Confidential 2 2 Resetting the developing bias voltage counter Since print density is likely to become darker as the toner gets older the developing bias is lowered by degrees bias voltage is reduced according to the number of develop roller rotations so that an almost fixed density can be maintained from the beginning to the end The developing bias voltage can be verified in the display of log information Function code 80 lt Procedure gt 1 Open the front cover 2 MFC7840W 7840N 7450 7440N 7340 7320 Press the Clear Back button DCP7045N 7040 7030 Press the Clear Back button Replace Drum 1 Yes 2 No appears on the LCD 3 MFC7840W 7840N 7450 7440N 7340 7320 Press the button in order of gt 0 0 DCP7045N 7040 7030 Press the Start button and then press the A or W button 00 appears on the LCD and then press the OK button 4 Close the fro
116. ctrodes 1 drum electrode drum unit and machine Yes Refer to Fig 1 1 Fig 1 2 body dirty Dirt on scanner Is the scanner windows Wipe the dirt off with a soft 2 windows of the of the laser unit dirty Yes clean lint free cloth laser unit Toner sensor After replacing the toner Replace the toner failure cartridge with a new cartridge one does the same 3 problem occur even Yes after printing several pages Does the machine start Clean the toner sensor printing even after receiving light side removing the toner Check the harness cartridge from the drum connection of the toner 4 unit Yes LED PCB ASSY luminescence side Replace the toner sensor PCB ASSY or toner LED PCB ASSY Between the Is the harness of the Reconnect the harness of 5 HVPS PCB Main HVPS PCB ASSY and No the HVPS PCB ASSY and PCB connection main PCB ASSY main PCB ASSY failure connected correctly HVPS PCB Is the problem solved Replace the HVPS PCB 6 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 7 after replacing the main Yes ASSY PCB ASSY Laser unit failure Is the problem solved Replace the laser unit 8 after replacing the laser Yes unit Confidential E Faulty registration User Check e Check that the appropriate media type is selected in the printer driver Step Cause Check Result Remedy Registration rear Does the r
117. d routine maintenance chapter in User s Guide Fuser error code failure The error history of the fuser unit is deleted Step Cause Remedy 1 Fuser unit failure Replace the fuser unit 2 Main PCB failure Replace the main PCB ASSY Confidential Error code 78 Print Unable 78 See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The temperature sensor of the fuser unit is broken Step Cause Remedy 1 Fuser unit failure Replace the fuser unit 2 Main PCB failure Replace the main PCB ASSY Error code 79 Print Unable 79 See Troubleshooting and routine maintenance chapter in User s Guide No detection of the internal temperature thermistor Step Cause Remedy 1 Harness connection failure of Check the harness connection of the internal internal temperature thermistor temperature thermistor and reconnect it 2 Internal temperature thermistor Replace the internal temperature failure thermistor 3 Main PCB failure Replace the main PCB ASSY Error code 7A Print Unable 7A See Troubleshooting and routine maintenance chapter in User s Guide No detection of the main motor lock signal Step Cause Remedy 1 Main motor failure Replace the main motor ASSY 2 Main PCB failure Replace the main PCB ASSY Error code 7B
118. ditions 1 This device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the end user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help Important A shielded interface cable should be used to ensure compliance with the limits for a Class B digital device Changes or modifications not expressly approved by Brother Industries Ltd could void the us
119. driver is successfully installed the following message screen appears Click Finish to return Found New Hardware Wizard Completing the Found New Hardware Wizard The wizard has finished installing the software for Q Brother Maintenance USB Click Finish to close the wizard Confidential lt Procedures gt After the installation procedure of the Brother Maintenance USB Printer driver is completed refer to the following steps for the detailed procedures to rewrite the program files If the Brother Maintenance USB Printer Driver has already been installed to your PC continue to start to rewrite the program files _ x Turn the power supply of the machine off Connect the PC and machine with the USB cable MFC 7840W 7840N 7450 7440N 7340 7320 Turn the power switch on while pressing the 5 button DCP 7045N 7040 7030 Turn the power switch on while pressing the Enlarge Reduce button The black and white pattern will appear on the LCD SDB 4 Start the PC When doing this operation for the first time the Plug amp Play program is performed and the driver is installed 5 Open the ALL2 folder and double click the FILEDG32 EXE icon to start Make sure that there is the printer icon of the connected machine and that no error occurs HE view Help mae e Sel gt b amp Symantec Fax Obbligato Kensa HP Color Canon iP4200 Brother Brother Brother Tat Starte
120. e Overseas Mode is set to ON Selectors 2 and 3 Overseas communications mode These selectors should be used if the machine malfunctions in overseas communications According to the communications error state select the signal specifications Setting selector 2 to 1 allows the machine to use 1100 Hz CED signal instead of 2100 Hz in receiving operation This prevents malfunctions resulting from echoes since the 1100 Hz signal does not disable the echo suppressor ES while the 2100 Hz signal does Setting selector 3 to 1 allows the machine to ignore a DIS signal sent from the called station once in sending operation This operation suppresses echoes since the first DIS signal immediately follows a 2100 Hz CED which disables the ES so that it is likely to be affected by echoes in the disabled ES state However such a disabled ES state will be removed soon so that the second and the following DIS signals are not susceptible to data distortion due to echoes Note that some models when called may cause error by receiving a self outputted DIS The setting made by selector 3 takes effect only when the Overseas Communications Mode is set to ON The setting made by selector 2 is always effective App 1 25 Confidential e Selectors 8 Limitation on CNG detection If this selector is set to 1 the machine detects a CNG signal according to the condition preset by selectors 2 and 3 on WSW18 after a line is connected If it is set to 0 the
121. e dialing When these selectors are set to 1 1 0 If you press the Redial Pause button in pulse dialing the machine will first wait for the 2nd dial tone to be sent via the communications line After that pressing the Redial Pause button will cause the machine to insert a WAIT of 3 5 seconds In tone dialing the machine will insert a WAIT of 3 5 seconds When these selectors are set to 1 1 1 If you press the Redial Pause button the machine will first wait for the 2nd dial tone to be sent via the communications line regardless of pulse dialing or tone dialing After that pressing the Redial Pause button will cause the machine to insert a wait of 3 5 seconds In those countries where no dial tone detection function is supported setting these selectors to 1 0 1 1 1 0 or 1 1 1 inserts a wait of 3 5 seconds e Selectors 4 through 6 Detection of international tone Upon detection of the 2nd dial tone for the time length specified by these selectors the machine starts dialing This setting is effective only when the 2nd dial tone detection function is activated by selectors 1 through 3 Setting 101 110 or 111 This function does not apply in those countries where no dial tone detection function is supported e Selector 7 No of 2nd dial tone detection cycles This selector sets the number of dial tone detection cycles required for starting dialing e Selector 8 Allowable instantaneous interrupt dur
122. e machine transmits a CNG after it turns on the CML relay e Selector 4 Time length from CML ON to CED transmission This selector sets the time length until the machine transmits a CED after it turns on the CML relay This setting does not apply to switching between facsimile and telephone e Selectors 5 and 6 No of training retries These selectors set the number of training retries to be repeated before automatic fallback e Selectors 7 and 8 Encoding system Compression This selector determines whether or not to allow the use of the MR MMR coding system App 1 15 Confidential lt WSW11 gt Selector No Function Setting and Specifications 2 0 Narrows by 10 Hz 1 Initial value 0 Widens by 10 Hz 1 Widens by 10 Hz 250 750 250 750 ms 400 600 400 600 ms ON OFF time length ranges for 1 475 440 175 440 ms busy tone More than one setting allowed 100 1000 17 660 ms 110 410 320 550 ms 100 660 100 660 ms Busy tone frequency band control Note e WSW11 is not applicable in those countries where no busy tone detection is supported e The setting of WSW11 is effective only when selectors 5 and 6 on WSWO5 are set to 0 1 or 1 1 Busy tone detection e Selectors 1 and 2 Busy tone frequency band control These selectors set the frequency band for busy tone to be detected e Selectors 3 through 8 ON OFF time length ranges for busy tone
123. e more than one time lt Operating Procedure gt 1 Press in order the 5 and 3 buttons in the initial stage of the maintenance mode The FAX TRANSFER appears on the LCD 2 To check the number of received files press the 1 button The 1 NO OF JOBS appears on the LCD Press the OK button and the number of received files appears just as NO OF JOBS 10 3 To transfer the activity report only press the 2 button The 2 ACTIVITY appears To transfer received files together with the activity report press the 3 button The 3 DOCUMENTS appears Note that if there is no received file the NO DOCUMENTS appears 4 To transfer the communication list for the latest communication press the 4 button The 4 COM LIST NEW appears To transfer the communication list for last three errors press the 5 button The 5 COM LIST ERR3 appears 5 With the 2 ACTIVITY 3 DOCUMENTS 4 COM LIST NEW or 5 COM LIST ERR3 being displayed press the OK button The ENTER NO amp SET appears 6 Enter the telephone number of the receiver machine and press the OK button again Note Be sure to type the telephone number with the numerical buttons No one touch dialing is allowed in this procedure The machine displays the ACCEPTED for approx two seconds and starts dialing to transfer data No station ID will be attached A cover page and end page as shown on the next page will be automatically attached instead
124. e parts that are hot Cautions specify procedures you must follow or avoid to prevent possible damage to the machine or other objects Note Notes tell you useful tips when servicing the machine Memo Memo tells you bits of knowledge to help understand the machine xiii Confidential E Safety Precautions Please keep these instructions for later reference and read them before attempting any maintenance WARNING As There are high voltage electrodes inside the machine Before you clean the inside of the machine make sure you have unplugged the telephone line cord first and then the power cord from the AC power outlet See Routine maintenance on page 115 A DO NOT use flammable substances or any type of spray to clean the inside or outside of the machine Doing this may cause a fire or electrical shock Refer to Routine maintenance on page 115 for how to clean the machine A DO NOT handle the plug with wet hands Doing this might cause an electrical shock A Always make sure the plug is fully inserted A After you have just used the machine some internal parts of the machine will be extremely hot When you open the front or back cover of the machine DO NOT touch the shaded parts shown in the illustration A The fuser unit is marked with a caution label Please DO NOT remove or damage the label xiv Con
125. e representative items are given below 3 Press the Stop Exit button so that the machine stops this operation beeps for one second and returns to the initial stage of the maintenance mode Note If the OK button is pressed when the MACHINE ERR or COMEER1 appears on the LCD the date and time when the error occurs are indicated on the LCD USB Serial number DRUM Drum count COVERAGE Average Coverage TTL_PG Total number of printed pages COPY Number of copies made PCPRINT Number of PC prints made FAX Number of FAX outputs made LIST Number of list page printed pages TR1_PG Number of pages picked up from the T1 MN_PAGE Number of pages picked up from manual tray A4 LTR Number of A4 Letter size sheets picked up LG A4L Number of LEGAL A4 LONG size sheets picked up B5 EXE Number of B5 Executive size sheets picked up ENVLOP Number of envelopes picked up A5 Number of A5 size sheets picked up OTHER Number of other size sheets picked up PLTNRE Number of Plain Thin Recycled sheets made TRANSP Number of Transparency mode TKTRBD Number of Thick Thicker Bond made ENVLOP Number of Envelop Env Thick Env Thin made TTL_JAM Total number of jams TR1_JAM Number of jams that occurred at the T1 MN_JAM Number of jams that occurred at the manual tray IN_JAM Number of jams that occurred inside the machine 5 31 Confid
126. e the laser unit radiation angle of after replacing the laser scanner diode of unit 2 laser unit veg Scanner motor rotation failure Main PCB failure Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY PCB ASSY Confidential E All black Step Cause Check Result Remedy Corona wire Are the electrodes on Clean both electrodes 1 failure the drum unit and Yes machine body dirty Is the corona wire Replace the drum unit 2 damaged Yes Under FG wire Is the under FG wire Re assemble the under FG 3 not assembled connected securely No wire correctly Scanner harness Is the scanner harness Reconnect the scanner 4 of the laser unit of the laser unit No harness of the laser unit connection connected securely failure FG harness Is the FG harness ASSY Reconnect the FG harness 5 ASSY connection between the laser unit No ASSY between the laser failure and main PCB ASSY unit and main PCB ASSY connected securely securely HVPS PCB Is the problem solved Replace the HVPS PCB 6 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 7 after replacing the main Yes ASSY PCB ASSY Laser unit failure Is the problem solved Replace the laser unit 8 after replacing the laser Yes unit 1 34 Confidential E Dirt on the back of paper Step Cause Ch
127. eceiving timing delay setting O 1 100 ms Not used 1 0 150 ms 1 1 200 ms Call No 5 6 Caller ID number display 0 0 20ms instantaneous interrupt bed ae O 1 10ms detection time setting 0 30 Not used SSeS 1 1 0ms CNG detection retry after invalid f f k CNG detected OPS TNO 8 Decompression of JPEG 0 ASIC 1 Software compressed file Not used Default Note Selector 8 is applicable only to models equipped with photo media capture e Selectors 3 through 6 Caller ID number display FSK receiving timing delay setting and instantaneous interrupt detection time setting Not used If a call error occurs during use of caller ID number display it may be possible for the error to be corrected by adjustment these selectors If the error cannot be thus corrected try adjusting selectors 5 and 6 e Selector 8 Decompression of JPEG compressed file Not used Decompress JPEG compressed files stored on the inserted memory card ASIC application specified integrated circuit JPEG compressed files can be decompressed with an ASIC If an image fails to be replayed correctly due to a decompression error set this selector to 1 and use other proven decompression software instead App 1 58 Confidential lt WSW54 gt Selector No Function Setting and Specifications PictBridge command delay time Not used 2 0 100 ms default 1 0 ms 0 50 ms 1 200 ms More CNG detection cycles in user fr
128. eck Result Remedy Scratch or Dirt Is the pressure roller Yes Print approximate 10 i on the fuser unit ASSY dirty pages Is any other area in the N Replace the fuser unit i o machine dirty Scratch or Dirt in Is the paper feed system Wipe dirt off 2 the paper feed dirty Yes system E Vertical streaks User Check e This problem may occur with noise which is caused by dirt on the corona wire in the drum unit In this case clean the corona wire with the wire cleaner e Replace the drum unit with a new one Replace the toner cartridge with a new one Step Cause Check Result Remedy Scratch or Dirt in Is the paper feed system Wipe dirt off 1 the paper feed dirty Yes system Scratch or Dirt Are there scratch and Replace the drum unit 2 on the exposure dirt on the surface of the Yes drum exposure drum Scratch or Dirt Are there scratch and Replace the fuser unit 3 on the heat roller dirt on the surface of the Yes heat roller CAUTION If the machine prints the same pattern especially vertical streaks continuous black vertical streaks may appear on the paper as the electrostatic performance of the drum is decreased E Black vertical streaks in a light background User Check Clean the inside of the machine and the corona wire in the drum unit e Replace the toner cartridge with a new one Step Cause Check Result Remedy Drum unit failure
129. ed to the last choice specified by selectors 5 through 8 If the modem always falls back to a low transmission speed e g 24 000 bps set the first transmission speed choice to the lower one e g modify it from 31 200 bps to 26 400 bps in order to deactivate the high speed modem function and reduce the training time for shorter transmission time WSW339 will be limited by selectors 3 through 8 on WSW40 App 1 44 Confidential lt WSW40 gt Selector No Function Setting and Specifications Not used Not masking Masking No 3 0 1 3429 symbols sec f No 4 0 1 3200 symbols sec Aoa eyinbobtale s No 5 0 1 3000 symbols sec 8 i No 6 0 1 2800 symbols sec No 7 Not used No 8 0 1 2400 symbols sec Note WSW40 takes effect only when the V 34 mode is permitted WSW19 selector 7 in models supporting V 34 mode e Selectors 3 through 8 Masking of symbol rate s Not used These selectors allow you to limit the transmission speed range in V 34 mode by masking the desired symbol rate s Transmission speeds assigned to the symbol rates are listed on the next page The setting made by these selectors will limit the setting made by selectors 1 through 4 on WSW39 If selector 3 is set to 1 to mask the 3429 symbols second when the first transmission speed choice is 33600 bps specified by selectors 1 through 4 of WSW339 for example then the allowable maximum transmission speed will be limited to
130. efault OFF AUTO CR ON OFF Configure the setting for the auto Carriage Return Default OFF AUTO WRAP ON OFF Configure the setting for the auto WRAP auto CRLF at the print width Default OFF AUTO SKIP ON OFF Configure the setting for the skip at the back end tip of the recording paper and add the blank space Default ON LEFT MARGIN 0 to 145 Configure the setting for the Left Margin column space at the left end Default 0 RIGHT MARGIN 10 to 155 Configure the setting for the Right Margin column space at the right end Default 80 TOP MARGIN 0 0 33 0 5 1 0 1 5 Configure the setting for the space at the upper end 2 0 Default 0 5 BOTTOM MARGIN 0 0 33 0 5 1 0 1 5 2 0 Configure the setting for the space at the bottom end Default 0 5 LINES 5 to 128 Configure the setting for the number of the lines in the PCL Default 60 ERROR PRINT ON OFF Configure the setting for the Error Print of the BR Script 3 Default ON 5 21 Confidential 1 4 12 Received Data Transfer Function Function code 53 MFC 7840W 7840N 7450 7440N 7340 7320 only lt Function gt This function transfers received FAX data to another machine It is useful when the machine cannot print received data due to the printing mechanism being defective Note The number of files that can be transferred at a time is 99 To transfer 100 files or more carry out the following procedur
131. egistration Re assemble the 1 actuator catching rear actuator move No registration rear actuator in some position smoothly and ensure smooth operation E Dark User Check e Check the machine s environment High temperature and high T S humidity conditions can cause this problem e Replace the drum unit with a new one e Replace the toner cartridge with a new one Step Cause Check Result Remedy The developing Is the problem solved Reset the developing bias bias voltage after resetting the counter Refer to 2 2 1 failure developing bias Yes Resetting the developing counter bias voltage counter in Chapter 5 HVPS PCB Is the problem solved Replace the HVPS PCB 2 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY PCB ASSY 1 31 Confidential m Poor fixing User Check e Replace the drum unit with a new one e Replace the toner cartridge with a new one Step Cause Check Result Remedy Fuser unit Is the problem solved Replace the position of the 1 pressure is high after replacing the Yes Pressure roller position of the pressure Refer to Fig 1 4 roller Fuser unit failure Is the problem solved Replace the fuser unit 2 after replacing the fuser Yes unit LVPS PCB failure Is the problem solved Replace the LVPS PCB
132. emedy 1 Registration front actuator catching in some position Re assemble the registration front actuator Confidential E Electrodes location on the drum unit Side surface of Drum unit Fig 1 1 E Electrodes location on the machine Ok Side surface of Frame L ASSY inside UI s O gens a c HfS Ss go LOOO is crt crear Thi 1 15 Confidential E Error code 84 Jam Rear Jam Rear Open the Back Cover and remove the jammed paper Paper jam in the rear of the machine It is detects by the eject sensor Error code 88 Jam Inside Jam Inside Open the Front Cover pull out the Drum Unit completely and remove the jammed paper Paper jam inside the machine It is detects by the registration rear sensor User Check e Check if the paper is jammed If there is any jammed paper remove it Step Cause Remedy Harness connection failure of Check the harness connections of the 1 registration front sensor PCB ASSY registration front sensor PCB ASSY registration rear sensor PCB ASSY registration rear sensor PCB ASSY and paper or paper eject sensor PCB ASSY eject sensor PCB ASSY and reconnect them Registration front actuator Ensure smooth operation of the registration 2 registration rear
133. emedy Document front Does document front Re assemble the actuator not actuator move document front actuator 1 operating smoothly No smoothly or catching Each harnesses Is the each harnesses of Reconnect the each of FB unit FB unit connected harnesses of FB unit 2 Yes connection securely failure 3 FB unit failure Is the problem solved by Yes Replace the FB unit replacing the FB unit Main PCB failure Is the problem solved Replace the main PCB 4 after replacing the main Yes ASSY PCB ASSY Cannot scan the document in the ADF unit If scan the document it is completely white or black User Check e Check if there is the scanning surface of the ADF unit document in the upper side PCB ASSY Step Cause Check Result Remedy Each harnesses Is the each harnesses of Reconnect the each 1 of FB unit FB unit connected No harnesses of FB unit connection securely failure 2 FB unit failure Is the problem solved by Yes Replace the FB unit replacing the FB unit Main PCB failure Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY 1 43 Confidential 6 3 6 4 6 5 6 6 Print of the scanning document is light or dark User Check e Check if the ADF or FB glass is not stained Step Cause Check Result Remedy Setting of white Is the problem solved Set the white level 1 level scanning after
134. emperature Step Cause Remedy 1 Fuser unit harness connection Check the harness connection of the fuser failure unit and reconnect it Fuser unit failure Replace the fuser unit LVPS PCB unit failure Replace the LVPS PCB unit Main PCB failure Replace the main PCB ASSY 1 11 Confidential E Error code 71 Print Unable 71 See Troubleshooting and routine maintenance chapter in User s Guide Laser unit Polygon mirror motor failure Cannot detect the period signal of the polygon mirror motor Error code 72 Print Unable 72 See Troubleshooting and routine maintenance chapter in User s Guide BD beam detect sensor malfunction Step Cause Remedy Check the two harness connections of the laser unit and reconnect them Laser unit harness connection 1 failure Laser unit failure 3 Main PCB failure Replace the laser unit Replace the main PCB ASSY E Error code 76 Print Unable 76 See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The center thermistor detects rapidly rising temperature Step Cause Remedy 1 Fuser unit harness connection Check the harness connection of the fuser failure unit and reconnect it 2 Fuser unit failure Replace the fuser unit E Error code 77 Print Unable 77 See Troubleshooting an
135. enheecataceedSonaneapareesesenadiecenasett 5 1 1 1 How to Enter the Maintenance Mode eee eeeseeeeeeeeneeeeeeeeeaeeeeeeeeeeeeeeeesaeeeeeeeneeeeeeeeaaees 5 1 1 2 How to Enter the End User accessible Maintenance Mode ccieceeeeeeseeeeeeetteeeeeeeeneees 5 1 1 3 List of Maintenance mode Functions 0 0 cece eee eeeee eter eeeeaeeeeeeeeeeeeeeeetaeeeeeeeteeeeeeneaees 5 2 1 4 Detailed Description of Maintenance mode Functions 00 ceeeceeeeeeeeeeeeeeeneeeeeeesteeeeeenenaees 5 3 1 4 1 EEPROM Parameter Initialization Function code 01 91 eeceeseeeeeeeeeeseeeeeees 5 3 1 4 2 Printout of Scanning Compensation Data Function code 05 aseeseen 5 4 1 4 3 Placement of CIS Unit in Position for Transportation Function code 06 5 6 1 4 4 ADF Performance Test Function Code 08 cccccceseeeeeneeeeeeeeeeneeeseneeeseneeeeteaeees 5 6 1 4 5 Test Pattern Function code 09 ccccceeesceeeeneeeeeneeeeeaeeeeeaeeeseneeseeaeeeseaeeeteeeeseaeees 5 7 1 4 6 Worker Sw WSW Setting and Printout cccceeeeeeeeeneeeeeeeeeeeeeeeeeeeeeeeeeeteaeees 5 8 1 4 7 Operational Check of LCD Function code 12 eeeccccceceeseeeeeeeeeeeeeeeeeeeeeesneeeesaes 5 13 1 4 8 Operational Check of Control Panel Button Function code 13 ceceeeeee 5 14 1 4 9 ROM Version Check Function Code 25 cc cccccceeeeceeseeeeeseeeteeeeeseeeeseeeessaes 5 15 vi Confidential 1 4 10 Operational Check of Sensors
136. enine AE aa RaR EA 3 88 8 33 DEV JOINT DEV GEAR JOINT 53R REGISTRATION PENDULUM GEAR SPRING 3 90 8 34 THERMISTOR HARNESS UNIT 000 cece eeee rene eeeee eee e teat tease saaeseeeeaeeeaeeseaeeeeeeeaeee 3 91 8 35 TONER SENSOR PCB UNIT ASSY ieiscesicnisecctiiinee dn iieniivivvsenitewiibuinesdaimenede 3 92 8 36 REGISTRATION SOLENOID T1 SOLENOID 000 eee cece cents eset eeeeeeaeeeneeteaeeneeeees 3 93 8 36 1 REGISTRATION SOLENOID 0000 eee eeee ene eene tense teaeeseeeeeeeseeeesaeeteaeeeeeseaeeneas 3 93 8 36 2 T1 SOLENOID sevcstessevinut emia aetna niaaa RN aige ENEE 3 95 8 37 MAIN SHIELD PLATE EJECT SENSOR PCB ASSY 000 eeeeeneeee etree teeteneeneate 3 96 8 38 RUBBER FOOT tssiisiscciduateat iacivossstecpieeest E E EEE 3 100 8 39 MAIN FRAME L ASSY iscasiasecccesssnescctesieeecs een esiceriibedeavei baad svedesnebleenacedsnesesseeceetenteeeets 3 101 CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT eeeeeeeeeeees 4 1 1 CIP YOU REPLACE THE MAIN PCOB sc eves nentteatecs un n a es eee at eecad eae eke 4 1 2 IF YOU REPLACE THE WIRELESS LAN POB denenerek a AARNA 4 10 3 WP YOUIRERLACE THE LASER UNIT css pectescecstee ncececeeecetedaes Shei uate ESR 4 11 4 NF YOUNREPLAGCE THEFEB UNII sccestsscscccesssseceensae lia ore npea ee aE Te EES EAE ES 4 12 CHAPTERS SERVICE FUNCTIONS svoriai aerer raanei 5 1 Te MAINTENANCE MODE geste ageenedsecasetsal sagedserchdacdinst Senntaeptasceaktesaumedns
137. ening during troubleshooting 1 Always turn off the power and unplug the power cable before removing any covers or PCBs adjusting the machine and so on If you need to take voltage measurements with the power switched on take the greatest of care not to receive an electric shock 2 When connecting or disconnecting cable connectors make sure that you hold the connector body and not the cables 3 Electronic devices are sensitive to static build up make sure that you touch a metal portion of the machine to discharge yourself before accessing the PCBs Handle PCBs with care when repairing them 4 Ensure all Warnings are followed Ay The fuser unit becomes extremely hot during operation Wait until it has cooled down sufficiently before replacing consumable items DO NOT remove or damage the caution label located on or around the fuser 5 Verify again that the repaired portion works properly 1 1 Confidential 1 2 Part names E Printer part a Pull arm R ES NCU shield en cover Pull arm L AZ WSs lt a ASSY co Speaker hold spring gt ar Pull arm spring ADF R Ns Pull arm spring ADE Back cover pa a jie mail N na i T Y Lock claw CES Pull arm guide Eject roller ASSY 2 Paper stack lever Joint cover sub chute ASSY
138. ential RE_JAM Number of jams that occurred at the ejecting DRUM_CH Number of times the drum unit has been replaced DRUM_PG Number of printed pages with the drum unit TNER_CH Number of times the toner cartridge has been replaced TNER_PG1 Number of pages printed with the current toner cartridge TNER_PG2 Number of pages printed with the previous toner cartridge DEV_BIAS Developing bias voltage HODN_ER Number of electric discharge error FUSR_ER Number of fuser error MTLK_ER Number of motor lock error MACHINE ERR_01 to 10 Last machine error code 01 to 10 ADF_JAM Number of document jams that occurred at the ADF ADF_PG Number of scanned pages from the ADF FB_PG Number of pages scanned with the FB unit COMERR1 to 3 Last communication error code 1 to 3 1 Some margin of error must be taken into consideration because coverage of the printable areas of A4 size paper is calculated using video signals 2 Not indicated for the DCP7030 7040 7045N 3 Not indicated for the DCP7030 The shaded number can reset the counter value by the enter of the 2 7 8 and 3 keys 5 32 Confidential 1 4 19 Error Code Indication Function code 82 lt Function gt This function displays an error code of the machine on the LCD lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 8 and 2 buttons in the initial stage of the maintenance mode DCP7045N
139. eption level at the remote station is improper due to line loss This function applies for G3 protocol signals Setting two or more selectors to 1 produces addition of attenuation assigned to each selector If selector 8 on WSW23 is set to 0 this setting is so limited that 10 dB 1 dB in France or higher setting only is effective Note that in Japan and China 9 dB or higher and 2 dB or higher settings only are effective respectively regardless of whether selector 8 on WSW23 is set to 0 App 1 18 Confidential lt WSW14 gt Selector No Function Setting and Specifications Zz o 13 Hz 15 Hz 23 Hz 20 Hz Frequency band selection lower limit for incoming calling signal CI 30 Hz 55 Hz 70 Hz 200 Hz Frequency band selection upper limit for incoming calling signal Cl N 00 Fixed to once 1 to 6 times 1 to 8 times 2 to 8 times 1 to 2 times 1 to 3 times 1 to 4 times 1 to 5 times 2 to 3 times 2 to 4 times 2 to 5 times 2 to 6 times 1 to 10 times 2 to 10 times 3 to 5 times 4 to 10 times No of rings in AUTO ANS mode 2 0 1 0 1 4 0 1 0 1 6 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 a eee esses 20000 00 0 0 0071 2000 4H 00 oOr oOoOr orortortor on o e Selectors 1 through 4 Frequency band selection for incoming calling signal Cl These selectors are used to select the frequency band of Cl for act
140. er s authority to operate the equipment x Confidential E Industry Canada Compliance Statement For Canada This Class B digital apparatus complies with Canadian ICES 003 Cet appareil num rique de la classe B est conforme a la norme NMB 003 du Canada E Laser Safety 110 to 120 volt model only This machine is certified as a Class 1 laser product under the U S Department of Health and Human Services DHHS Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968 This means that the machine does not produce hazardous laser radiation Since radiation emitted inside the machine is completely confined within protective housings and external covers the laser beam cannot escape from the machine during any phase of user operation E FDA Regulations 110 to 120 volt model only The U S Food and Drug Administration FDA has implemented regulations for laser products manufactured on and after August 2 1976 Compliance is mandatory for products marketed in the United States The following label on the back of the machine indicates compliance with the FDA regulations and must be attached to laser products marketed in the United States MANUFACTURED Brother Technology Shenzhen Ltd NO6 Gold Garden Ind Nanling Buji Longgang Shenzhen China This product complies with FDA performance standards for laser products except for deviations pursuant to Laser Notice No 50 dated Jun 24 2007
141. er Default Paper Size Ad Reset Develon Bias OW xi MFC 7840 Enter the serial number the last nine digits of the machine into the box at the right hand side and click the OK button The serial number is shown in the window and check that it is correct Follow the next step without clicking the OK button CAUTION Refer to APPENDIX 3 to know how to read the serial number of the machine 4 7 Confidential E Inputting the adjusted value of the laser scanner lt Procedures gt 1 Select Adjust Scanner from Menu 2 Check the port USB that the machine is connected through 3 Enter the figures the last four digits shown on the label attached on the chassis at the right hand side of the main PCB into the box at the right hand side 4 Click the OK button Printer Information s i You can use this tool only when your printer is connected to a parallel port Select the LPT port 1 3 or the USB you are using and click OK LPT LPT2 CHE c USB djust Scanner Default Paper Size Letter Default Paper Size A4 Reset Develon Bias LOW z MFC7840w Cancel Drive sub ASSY Drive sub ASSY 2 to 10mm Serial label Fig 4 1 4 8 Confidential Setting the toner cartridge type The Toner Life End message is displayed according to the upper limit value of the developing roller rotation The upper limit value is different between the starter toner cartridge stand
142. ers for white level compensation Setting this selector to 0 will keep all parallel output pins of the machine at high level Use this setting if Resource Manager bundled with MFC models installed to WindowsNT running on the connected PC fails to monitor the power ON OFF state of the machine e Selector 4 Previous filtering parameters for white level compensation Not used At the start of scanning operation the machine usually initializes white and black level data stored in the EEPROM by scanning the while level reference film attached to the inside of the scanner top cover After long use of the machine however the film may be contaminated with dust or dirt Accordingly incorrect white level data will be set up so that white vertical streaks will be brought on the scanning result Setting this selector to 0 Enabled will apply previously saved white level data instead of new incorrect compensation Ap p 1 51 Confidential lt WSW47 gt Selector No Function Setting and Specifications Handling paper at the occurrence of a paper feed timing error Not used 0 Eject paper w o print 1 Print on the current paper Not used edo 4 Delay of FAX line disconnection 0 200 ms a N 9 on ging p 0 700 ms Not used 1 1000 ms Disable the ringer of external telephone at non ring reception No 1 Yes Not used Not used Disable the ringer of external telephone with CAR signal when ca
143. etting for the Resolution Effective only for the print from the PC When set the Resolution on the PC the setting becomes effective And this setting is ignored Default 600 TONER SAVE ON OFF Configure the setting for the Toner Save Mode Effective for all print and change the setting of the Manu Function However as for the Copy this setting becomes invalid When set the Toner Save or the PC the setting becomes effective And this setting is ignored Default OFF DENSITY 6 to6 Configure the setting for the Density Effective for the print from the PC or for the print of the NetWorkConfig TestPrint FontList Configuration from the panel Link the setting of the Toner Save Judge the both setting and decide the density When set the Density or the PC the setting becomes effective And this setting is ignored Default 0 5 19 Confidential Function Set value Problem SLEEP TIME 0 to 99 Configure the setting for the time until shift to the Sleep Time Change the setting of the Menu Function Default 5 PAGE PROTECTION Off Letter Legal A4 Auto Configure the setting to protect the page memory when recording in PC Set in the PCL Core There is not the influence of the memory management problem of the MFC Default OFF EMULATION Auto HP LaerJet BR Script Configure the setting for the Emulation Charge the setting of the Menu Functi
144. fidential 3 23 8 4 2 EJECT ACTUATOR EJECT ACTUATOR SPRING 1 Release the Hook to slide the Eject actuator and then remove the Eject actuator from the Fuser cover ASSY 2 Remove the Eject actuator spring from the Eject actuator Eject actuator Eject actuator Eject actuator spring Eject actuator Fuser cover ASSY Fig 3 15 3 24 Confidential 8 4 3 EJECT ROLLER ASSY 1 BUSH C BUSH R BUSHL 1 Release the Hook of the Bush C from the Fuser cover ASSY 2 Remove the Eject roller ASSY 1 from the Fuser cover ASSY qon fans amon fom EPE on jo m Eject roller ASSY 1 Bush C g E E Hook Fuser cover ASSY Fig 3 16 3 Remove the Bush C the Bush R and the Bush L from the Eject roller ASSY 1 sna Bush C Bush R 4 D D A 1 v D 4 Eject roller ASSY 1 Fig 3 17 3 25 Confidential 8 5 JOINT COVER SUB CHUTE ASSY 1 Remove the two Taptite bind B M4x12 screws and then remove the Joint cover sub chute ASSY from the Main body Joint cover sub chute ASSY Taptite bind B M4x12 Fig 3 18 3 26 Confidential 8 6 INNER CHUTE ASSY 1 Remove the two Taptite bind B M4x12 screws and then remove the Inner chute ASSY from the Main body Taptite bind B M4x12 Fig 3 19 3 27 Confidential 8 7 FUSER UNIT
145. fidential A WARNING A To prevent injuries be careful not to put your hands on the edge of the machine under the document cover or scanner cover A To prevent injuries be careful not to put your fingers in the area shown in the illustration eg AN A 1i OP A 276 WY A DO NOT use a vacuum cleaner to clean up scattered toner Doing this might cause the toner dust to ignite inside the vacuum cleaner potentially starting a fire Please carefully clean the toner dust with a dry lint free cloth and dispose of it according to local regulations A When you move the machine grasp the side hand holds that are under the scanner A Use caution when installing or modifying telephone lines Never touch telephone wires or terminals that are not insulated unless the telephone line has been unplugged at the wall jack Never install telephone wiring during a lightning storm Never install a telephone wall jack in a wet location A This product must be installed near an AC power outlet that is easily accessible In case of an emergency you must disconnect the power cord from the AC power outlet to shut off the power completely A To reduce the risk of shock or fire use only a No 26 AWG or larger telecommunication line cord XV Confidential CAUTION Lightning and power surges can damage this product We recommend that you use a quality surge protection device on the A
146. fl on i ADF unit I 1 1 1 8 11 4 GEAR COVER 1 Release the Hook to remove the Gear cover from the ADF unit Gear cover Gear cover lt Back side gt Confidential 3 36 8 11 5 DOCUMENT SEPARATOR ROLLER SHAFT ASSY 1 Remove the Separator roller shaft ASSY from the ADF unit 2 Remove the Separator roller bushing from the Separator roller shaft ASSY Separator roller shaft ASSY Separator roller bushing ADF unit Fig 3 32 3 37 Confidential 8 11 6 UPPER DOCUMENT CHUTE ASSY 1 Remove the four Taptite cup B M3x10 screws 2 Release the Hook to remove the Upper document chute ASSY from the ADF unit Taptite cup B M3x10 an EEA ap ie AVAR MINN Hook AA ADF unit 3 38 Confidential 3 Release the Hook to remove the ADF plate spring and the Separation rubber ASSY from the Upper document chute ASSY Separation rubber ASSY ADF plate spring Si Ws ADF plate spring Upper document chute ASSY Fig 3 34 3 39 Confidential 8 11 7 LOWER DOCUMENT CHUTE ASSY 1 Remove the two Taptite cup B M3x10 screws and then remove the Lower document chute ASSY from the Document cover sub ASSY Taptite cup B M3x10 mane Lower document chute ASSY Rib Taptite cup B M3x10 Rib Document cover sub ASSY Fig 3 35 3 40 Confidential 8 11 8 ADF SENSOR PCB ASSY 1 Pull the H
147. g 1 roller circumference Yes approximate 10 pages If intervals the same problem occurs replace the toner cartridge Scratch and Dirt Are the white spots at Replace the drum unit 2 on the exposure 75 0 mm exposure Yes drum drum circumference intervals Drum unit Are the electrodes on Clean both electrodes 3 connection the drum unit and Yes Refer to Fig 1 1 Fig 1 2 failure machine body dirty HVPS PCB Is the problem solved Replace the HVPS PCB 4 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 5 after replacing the main Yes ASSY PCB ASSY Confidential lt Clean the drum unit as follows gt If you have print quality problems clean the drum unit as follows 1 Put the print sample in front of the drum unit and find the exact position of the poor print Fig 1 7 2 Turn the drum unit gear to the direction of the arrow of the figure by hand while looking at the surface of the exposure drum Fig 1 8 3 When you have found the mark on the drum that matches the print sample wipe the surface of the exposure drum with a dry cotton swab until the dust or glue on the surface comes off Fig 1 9 CAUTION DO NOT clean the surface of the exposure drum with a sharp object 1 39 Confidential E Black spots User Check e Damp wet paper might be used Try to change to freshly unpacked paper Toner may be e
148. h a new one e The paper tray ground terminal located in the machine body may be dirty Clean the contact with a dry cloth 1 40 Confidential E Downward fogging of solid color User Check e Toner may be empty Replace the toner cartridge with a new one Step Cause Check Result Remedy HVPS PCB Is the problem solved Replace the HVPS PCB 1 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 2 after replacing the main Yes ASSY PCB ASSY E Horizontal lines User Check e The paper tray ground terminal located in the machine body may be dirty Clean the contact with a dry cloth Step Cause Check Result Remedy Dirt on charge Are the electrodes on Clean both electrodes 1 electrode the drum unit and Yes Refer to Fig 1 1 Fig 1 2 machine body dirty Paper tray Is the paper tray ground Correct the bending of 2 ground terminal terminal bent which is Yes Paper tray ground terminal located in located in the machine machine body body Laser unit failure Is the problem solved Replace the laser unit 3 after replacing the laser Yes unit 1 41 Confidential E Ghost User Check T e Check the machine s environment conditions such as high or low humidity may cause this situation to occur e Check that the appropriate media type or size is selected in the printer dri
149. harness lt Left side gt Main PCB ASSY Confidential 3 11 6 MAIN FRAME R ASSY Cover sensor harness ASSY Toner LED PCB ASSY Fan motor 60 unit PS PCB unit SW holder Inlet harness ASSY Wireless LAN PCB ASSY only MFC7840W Toner LED PCB ASSY LVPS PCB unit Main PCB ASSY Wireless LAN PCB ASSY only MFC7840W i X n A NLA Z Main PCB ASSY Pace 11K b gt AS Main Frame L ASSY lt Back side gt we lt Right side gt PS PCB unit Toner LED PCB ASSY 3 12 Confidential EJ TONER LED PCB ASSY REGISTRATION FRONT SENSOR PCB ASSY REGISTRATION REAR SENSOR PCB ASSY Toner LED PCB ASSY Registration front sensor PCB ASSY 9 TONER SENSOR PCB UNIT ASSY NEW TONER SENSOR HARNESS ASSY lt Left side gt SS N h ine ls i New toner sensor 9 Ri 9 a Zo harness ASSY J WAY WINE NE S KAN 7 ER OIR ETA Main PCB ASSY ad x a SN GB Sec 5 e 3 13 Confidential 10 HIGH VOLTAGE PS PCB REGISTRATION SO
150. he battery harness 2 Battery exhausted Replace the battery 3 Main PCB failure Replace the main PCB ASSY 1 21 Confidential E Error code F9 Machine Error F9 Maintenance mode 74 Non decision Inputting omission of the customizing code Step Cause Remedy Turn the power off when the Maintenance mode 74 is in progress Implement the Maintenance mode 74 again 1 22 Confidential 3 1 3 2 PAPER FEEDING PROBLEMS Problems related to paper feeding are end user recoverable if following the User Check items If the same problem occurs again follow each procedure in the order of the number described in the Step column in the tables below No Feeding Step Cause Check Result Remedy Edge actuator Does the edge actuator Re assemble the edge 1 catching in some move smoothly No actuator and ensure position smooth operation Roller holder Does the roller holder Re assemble the roller 2 ASSY catching in ASSY move smoothly Yes holder ASSY and ensure some position smooth operation Registration front Is the problem solved Replace the registration 3 sensor failure after replacing the Yi front sensor PCB ASSY es registration front sensor PCB ASSY Paper feeding kit Is the surface of the 1 Clean the surface of failure separation pad or the t
151. he initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 09 appears on the LCD and then press the OK button 2 The machine starts printing a test pattern Upon completion of printing the machine beeps for one second and returns to the initial stage of the maintenance mode The figure below shows a test pattern that is printed Fig 5 2 5 7 Confidential 1 4 6 Worker Sw WSW Setting and Printout 1 Worker Switch Setting Function code 10 lt Function gt The machine incorporates the following worker switch functions which may be activated with the procedures using the control panel buttons The worker switches have been set at the factory in conformity to the communications standards and codes of each country Do not adjust them unless necessary Some worker switches may not be applicable in some versions The worker switch data list indicates Not used for those inapplicable switches Details of Worker switches The details of the worker switches are described in APPENDIX 1 in which the user accessible selectors of the worker switches are shaded E Worker Switches WSW No Function Refer to Wwswo1 Dial pulse setting App 1 3 WSW02 Tone signal setting App 1 5 WSW03 PABX mode setting App 1 6 WSW04 TRANSFER facility setting App 1 8 WSW05 1st dial tone and busy tone de
152. he separation pad or 4 pickup roller dirty or worn Yes pickup roller out 2 Replace the separation pad or pickup roller Pressure plate Is the pressure plate gear Replace the paper tray 5 Yes gear damage damaged 6 T1 solenoid failure Does the T1 solenoid No Replace the T1 solenoid work correctly T1 solenoid Circuit Is the problem solved Replace the high voltage 7 of the high voltage after replacing the high Yi power supply PCB ASSY es power supply PCB voltage power supply broken PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 8 after replacing the main Yes ASSY PCB ASSY Main motor failure Is the problem solved Replace the drive sub 9 after replacing the drive Yes ASSY sub ASSY Double Feeding Step Cause Check Result Remedy 1 Paper feeding kit Is the surface of the Yes Replace the paper is abrasion separation pad worn out feeding kit 1 23 Confidential 3 3 Paper Jam E Paper jam in the paper tray and front cover Step Cause Check Result Remedy Registration front Does the registration front Re assemble the 1 actuator edge actuator edge actuator No registration front actuator actuator catching move smoothly edge actuator and ensure in some position smooth operation Registration front Does the registration front Replace the registration sensor PCB sensor move smoothly front sensor PCB ASSY registra
153. hout detection of a dial tone when a line is connected to the PSTN Selector 4 Max pause time allowable for remote ID code detection This selector sets the maximum pause time allowable for detecting the second digit of a remote ID code after detection of the first digit in remote reception If selector 4 is set to 0 2 seconds for instance only a remote ID code whose second digit is detected within 2 seconds after detection of the first digit will become effective so as to activate the remote function App 1 9 Confidential e Selectors 5 and 6 Busy tone detection in automatic sending mode These selectors determine whether or not the machine automatically disconnects a line upon detection of a busy tone in automatic sending mode Setting selector 6 to 0 ignores a busy tone so that the machine does not disconnect the line Setting selectors 5 and 6 to 0 and 1 respectively makes the machine detect a busy tone only after dialing and disconnect the line Setting both of selectors 5 and 6 to 1 makes the machine detect a busy tone before and after dialing and then disconnect the line Selector 7 Busy tone detection in automatic receiving mode This selector determines whether or not the machine automatically disconnects the line upon detection of a busy tone in automatic receiving mode lt WSWO06 gt Selector No Function Setting and Specifications 3 No pause 3 5 sec wait 7 sec wait 10 5 sec wait
154. ia 1 26 4 TROUBLESHOOTING OF DOCUMENT FEEDING siciesis sccesstetsssacetses cetemustiardeastevencrestaeenieontenss 1 27 Ae NO FROCCING E T ceca Riese ste hacesc ce tea dict eved gies T acct cava dcscteeseed arses 1 27 4 2 DOUBIOTEOOING srareinionan o E E E 1 27 43 Paper Jam cetesiss sceeivse chines cn secevedes ecead de eleceesshearidpeidiei de RAEE E I EEEE E 1 28 5 IMAGE DEFECT TROUBLESHOOTING Defect Of the Print cceeeseeeeeeeeeeeeeeeeneeenees 1 29 5 1 Image Defect Examples ccccceeeeeecceeeeeeneceeeeeeneceeeeeeaeeeeeeessaeeeeeeaaeseeeeseaaeensenneaseetens 1 29 5 2 Diameter of Rollers vi iccccesecevsiscicnweccaeve snide envi EE SAN EEA EE 1 29 5 39 Troubleshooting Image Defect assenar ENAA a EE AASA 1 30 6 TROUBLESHOOTING OF SCANNIG s preissiroidsseeripiesen inaano a aena Ere a a EEEE 1 43 6 1 Cannot scan the document in the FB unit If scan the document it is completely white or black s ssssssssessiessressrressrrssrrserrrssre 1 43 6 2 Cannot scan the document in the ADF unit If scan the document it is completely white or black ceceeeeeeeeeeeeeeeeeeneeeeneeeeeeeeeee 1 43 6 3 Print of the scanning document is light Or dark 0 ee eeeceeeeeeeeeeeeeeeeeeeeeeeeetaeeeeeeneneeeeess 1 44 6 4 Vertical streaks White or Black vertical streaks cccceceeeeeeeeeeeeeeeeeeeeeeeeeseaeeseeneeeseaeees 1 44 iii Confidential 6 5 POOM FIXING EE N E E E E abc tunes E E E E A eee 1 44 6 6 im
155. iation exposure For Finland and Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT Varoitus Laitteen kayttaminen muulla kuin tassa kaytt6ohjeessa mainitulla tavalla saattaa altistaa k ytt j n turvallisuusluokan 1 ylitt v lle nakymatt6malle lasersateilylle Varning Om apparaten anv nds pa annat s tt n i denna Bruksanvisning specificerats kan anv ndaren uts ttas f r osynlig laserstralning som verskrider gr nsen f r laserklass 1 viii Confidential E Internal laser radiation Maximum radiation power 10 mW Wave length 780 800 nm Laser class Class 3B E EU Directive 2002 96 EC and EN50419 European Union only This equipment is marked with the recycling symbol below It means that at the end of the life of the equipment you must dispose of it separately at an appropriate collection point and not place it in the normal domestic unsorted waste stream This will benefit the environment for all European Union only ix Confidential lt For USA and Canada gt E Federal Communications Commission FCC Declaration of Conformity For USA Responsible Party Brother International Corporation 100 Somerset Corporate Boulevard P O Box 6911 Bridgewater NJ 08807 0911 USA Telephone 908 704 1700 declares that the products Product name Laser Multi Function Center DCP 7030 7040 7045N MFC 7320 7340 7440N 7450 7840N 7840W complies with Part 15 of the FCC Rules Operation is subject to the following two con
156. ield plate 4 Remove the three Taptite bind B M4x12 screws and then remove the Main shield plate from the Main body wee Main PCB sheet Taptite bind B M4x12 t Main shield plate Taptite bind B M4x12 3 98 Confidential 5 Release the Hook to remove the Eject sensor PCB ASSY from the Main body Eject sensor PCB ASSY Hook SSS HiT NN ADDY y 102 Fig 3 Confidential 3 99 8 38 RUBBER FOOT 1 Remove the two Rubber feet from the Main body Rubber foot Fig 3 103 3 100 Confidential Note The procedure for disassembling the Main frame L ASSY as mentioned after 8 24 HIGH VOLTAGE PS PCB ASSY is described below 8 39 MAIN FRAME L ASSY 1 Remove the three Taptite bind B M3x10 screws and then remove the FU front paper guide from the Main body Taptite bind B M3x10 FU front paper guide lt Back side gt Fig 3 104 3 101 Confidential 2 Remove the two Taptite cup S M3x6 SR screws and then remove the Chute ground plate from the Main body Chute ground plate lt Back side gt Taptite cup S M3x6 SR Fig 3 105 3 102 Confidential 3 Release the Hook to remove the Registration gear 25 termi
157. iendly reception No 1 2 more cycles Cordless handset ID recovery future Not used Valid 1 Invalid Caller ID tone alert detection time length 6 0 50 ms default 1 60 ms 0 70 ms 1 80 ms Caller ID mild pulse transmission Not used Yes 1 No default Note Switching between DTMF and FSK for caller ID reception Not used DTMF 1 FSK default e Selectors 1 and 2 are applicable only to models equipped with PictBridge e Selector 4 is applicable only to models equipped with cordless handset s e Selectors 5 through 7 are applicable only to models designed for the UK market e Selector 8 is applicable only to models designed for the Chinese market e Selector 1 and 2 PictBridge command delay time Not used These selectors specify the PictBridge command delay time that applies when the machine responds to the digital camera connected via PictBridge during negotiation If the machine fails to receive data from the digital camera change the delay time Selector 3 More CNG detection cycles in user friendly reception If CNG detection fails even after adjustment of selectors 4 and 5 on WSW26 try adding 2 more cycles to the permitted number of CNG detection cycles Selector 4 Cordless handset ID recovery Not used When this function becomes operative if the cordless handset ID number registered on the main board does not match that registered on the cordless
158. ies These selectors set the number of retries in each specified modem transmission speed Selector 5 T5 timer This selector sets the time length for the T5 timer Selector 6 T1 timer This selector sets the time length for the T1 timer Selectors 7 and 8 Timeout for response from the called station in automatic sending mode If the machine calling station receives no response no G3 command from the called terminal in automatic sending mode for the period specified by these selectors it disconnects the line App 1 14 Confidential lt WSW10 gt Selector No Function Setting and Specifications 1 DPS switching interfacing with CML 0 No 1 Yes Time length from transmission of the last dial digit to CML ON 0 100 ms 1 50 ms Time length from CML ON to CNG transmission 0 2 sec 4 sec Time length from CML ON to CED transmission except for facsimile to telephone switching 0 0 5 sec 1 No of training retries No 5 6 0 0 1 time 0 1 2 times 1 0 3 times 1 1 4 times Encoding system 0 Allowed 1 Not allowed Compression 0 Allowed 1 Not allowed e Selector 2 Time length from transmission of the last dial digit to CML ON This selector sets the time length from when the machine transmits the last dial digit until the CML relay comes on e Selector 3 Time length from CML ON to CNG transmission This selector sets the time length until th
159. ine maintenance chapter in User s Guide Fuser unit failure The side thermistor detects lower temperature than the specified value Error code 6A Print Unable 6A See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The side thermistor does not detect 60 C within the specified time Error code 6B Print Unable 6B See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The center thermistor does not detect 100 C within the specified time Error code 6C Print Unable 6C See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The center thermistor detects higher temperature than the specified value Error code 6D Print Unable 6D See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The center thermistor detects lower temperature than the specified value Error code 6E Print Unable 6E See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The center thermistor does not detect temperature rising within the specified time Error code 6F Print Unable 6F See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The center and side thermistors detect extremely high t
160. ing ADF R and the Pull arm R from the Joint cover Pull arm spring ADF R Pull arm R Pull arm spring ADF L pulia Pull arm R Pull arm spring ADF L 3 56 Confidential 8 14 PULL ARM GUIDE 1 Remove the two Lock claws to remove the two Pull arm guides from the Joint cover Lock claw Joint cover 3 57 Confidential 8 15 NCU PCB 1 Remove the Screw pan S P washer M3 5x6 screw and then remove the FG harness from the NCU shield 2 Remove the two Taptite bind B M4x12 screws and then remove the NCU shield from the Joint cover Taptite pan S P washer M3 5x6 Se FG harness Taptite bind B M4x12 ne Taptite bind B M4x12 NCU shield Joint cover Fig 3 56 3 Turn over the NCU housing 4 Remove the two Taptite cup S M3x6 SR screws and then remove the NCU PCB from the NCU housing 5 Disconnect the Connector from the NCU PCB and then pull out the Connector from the NCU housing Taptite cup S M38x6SR NCU PCB NCU housing Connector Fig 3 57 3 58 Confidential 8 16 SPEAKER UNIT 1 Disconnect the Speaker unit from the Main PCB ASSY Connector Fig 3 58 3 59 Confidential 2 Remove the Taptite bind B M4x12 screw and then remove the Speaker cover from the Joint cover 3 Release the Hook to remove the Speaker hold spring from the Joint cover 4 Remove the Speaker unit from the Joint cover Taptite bind B M4x12 Speaker cover Speaker hold spring
161. ing reception of 2nd dial tone This selector sets the allowable instantaneous interrupt period that should be ignored during reception of the 2nd dial tone App 1 11 Confidential lt WSW07 gt Selector No Function Setting and Specifications 2 0 Narrows by 10 Hz Dial tone frequency band control 1 Initial value 0 Widens by 10 Hz 1 Widens by 10 Hz Line current detection Not used No 1 Yes 21 dBm 24 dBm 27 dBm 30 dBm 33 dBm 36 dBm 39 dBm 42 dBm 2nd dial tone detection level Z 600 Q a O0 000 0 2 0000 Allowable instantaneous interrupt during reception of 1st 30 ms 1 50 ms dial tone Not used Note e Selectors 1 2 4 through 7 are not applicable in those countries where no dial tone or line current detection is supported e g U S A e Selector 3 is not applicable to those models having no loop current detection function e Selectors 1 and 2 Dial tone frequency band control These selectors set the frequency band for the 1st dial tone and busy tone before dialing to be detected This setting is effective only when selectors 1 through 3 on WSWO5 are set to 1 1 1 e Selector 3 Line current detection Not used This selector determines whether or not to detect a line current before starting dialing e Selectors 4 through 6 2nd dial tone detection level These selectors set the detection level of the 2nd dial tone e Selector 7
162. ion 1 12 B7 Detection error of scanner 1 20 75 Machine cooling down inside 1 7 B9 Scanning light adjustment error 1 20 76 Fuser unit failure 1 12 BB White level data error 1 21 77 Fuser unit failure 1 12 E6 NVRAM error on main PCB 1 21 78 Fuser unit failure 1 13 EC Fan performance malfunction 1 21 No detection of the internal 79 temperature thermistor 1 13 F8 Battery connection failure 1 21 No detection of main motor lock Maintenance mode 74 Non 7A signal 1 13 F3 decision Tee 1 6 Confidential 2 2 2 2 1 2 2 2 Error Code Cause and Remedy Recoverable User Check Errors These errors are recoverable by following the message indicated on the LCD or following the items indicated in User Check Error code 67 Toner Low Prepare New Toner Cartridge The toner of the toner cartridge is low The toner sensor delects the nearly empty User Check e Prepare a new toner cartridge If the toner is empty Replace it Error code 75 Cooling Down Wait for a while The machine is cooling down inside for protection The machine indicates Cooling Down in one of the conditions below 1 The temperature inside the machine is too high 2 Both ends of the heat roller are at different temperatures 3 The paper media is replaced with different Paper size media User Check e After having passed for a while with having turned the power supply on Service Call
163. ite bind B M4x12 5 0 80 1 8 1 HIGH VOLTAGE PS PCB ASSY Taptite cup S M3x6 SR 2 0 8 0 05 8 0 5 Taptite bind B M4x12 2 0 8 0 05 8 0 5 ae lena ee ake neds ee ee a 2a PE i els right side of Re pan S P washer S 1 0 8 0 05 840 5 AIR DUCT Taptite cup S M3x6 SR 2 0 8 0 05 8 0 5 LV SHIELD PLATE COVER pan S P washer 1 0 5 0 05 5 0 5 5X6 Taptite cup S M3x6 SR 2 0 50 05 5 0 5 3 3 Confidential Location of screw Screw type Q ty pane aa SW HOLDER Taptite bind B M4x12 1 0 8 0 1 8 1 INLET HARNESS ASSY a pan S P washer 1 0 5 0 05 5 0 5 5X6 Taptite flat B M3x10 2 0 45 0 05 4 50 5 LVPS PCB UNIT Taptite cup S M3x6 SR 2 0 5 0 05 5 0 5 LV SHIELD PLATE 2 Taptite bind B M4x12 2 0 8 0 1 8 1 Back Side Taptite cup S M3x6 SR 1 0 6 0 1 6 1 a chute ground plate Taptite cup S M3x6 SR 1 0 5 0 05 5 0 5 ACTUATOR HOLDER ASSY Taptite bind B M3x10 2 0 5 0 1 5 1 Sana FRONT SENSOR Taptite bind B M3x10 1 0 540 1 5 1 REAR ACTUATOR HOLDER ASSY Taptite bind B M3x10 2 0 50 1 5 1 Re e REAR SENSOR Taptite bind B M3x10 1 0 540 1 5 1 UNDER FG WIRE Taptite bind B M4x12 1 0 8 0 1 8 1 Taptite cup S M3x6 SR 1 0 8 0 05 8 0 5 DRIVE SUB ASSY Taptite cup S M3x6 SR 1 0 6 0 1 61 Taptite bind B M4x12 9 0 8 0 1 8 1 TONER SENSOR HARNESS ASSY Taptite bind B M3x10 1 0 5 0 1 5 1 REGISTRATION SOLENOI
164. ivating the AUTO ANS facility In the French models if the user sets the PBX to OFF from the control panel the setting made by selectors 1 and 2 will take no effect and the frequency s lower limit will be fixed to 32 Hz Even if the setting made by these selectors does not apply it will be printed on the configuration list e Selectors 5 through 8 No of rings in AUTO ANS mode These selectors set the number of rings to initiate the AUTO ANS facility App 1 19 Confidential lt WSW15 gt Selector No Function Setting and Specifications Redial interval 0 16 times 1 1 times 0 2 times 1 3 times 1 15 times No of redialings Not used CRP option 0 Disable 1 Enable e Selectors 1 through 6 Redial interval and No of redialings The machine redials by the number of times set by selectors 3 through 6 at intervals set by selectors 1 and 2 e Selector 8 CRP option If a command error occurs in the machine calling station the machine usually waits for three seconds and then makes a retry three times This CRP option is a request command that can be sent from the called station for requesting the calling station to retry the failed command immediately App 1 20 Confidential lt WSW16 gt Selector No Function Setting and Specifications Not used ITU T CCITT superfine recommendation 0 OFF ON Not used Max document length limitation 0 400 cm 1 90
165. ive in distinctive ringing Not used The ringer pattern consists of short and long rings e g short short long rings This selector sets the minimum ON and OFF duration of ringer signals that are required for the machine to interpret ringer signals as being ON or OFF This is to prevent components of a ringer pattern from being misinterpreted due to chattering in distinctive ringing The machine monitors ringer signals at 10 ms intervals If the signal is ON the machine counts 1 if it is OFF it counts 1 If the counter increments up to 5 or 13 when this selector is set to 1 90 ms or 0 130 ms respectively the machine interprets the current signal as being ON If the counter returns to zero the machine interprets the signal as being OFF If the Distinctive Ring is set to OFF this selector is not effective App 1 36 Confidential lt WSW32 gt Selector No Function Setting and Specifications Not used Standard Default resolution Fine Super fine Photo Automatic Default contrast Automatic Super light Super dark e Selectors 5 and 6 Default resolution These selectors set the default resolution which applies when the machine is turned on or completes a transaction e Selectors 7 and 8 Default contrast These selectors set the default contrast which applies when the machine is turned on or completes a transaction App 1 37 Confidential lt WSW33 gt Selector N
166. ject sensor PCB ASSY Main PCB failure Replace the main PCB ASSY 1 17 Confidential E Error code 9F No paper Reload paper then press start Paper empty It is detects by the registration front sensor User Check e Replenish the paper in the paper tray Step Cause Remedy Registration front actuator 1 tes ee catching in some position Re assemble the registration front actuator Registration front sensor PCB 2 harness connection failure Check the harness connection of the registration front sensor PCB and reconnect it Registration front sensor PCB failure Replace the registration front sensor PCB 4 Main PCB failure Replace the main PCB ASSY E Error code A1 Cover is open Close the Front Cover Front cover open User Check e Close the front cover Step Cause Remedy Harness connection failure of 1 cover sensor harness ASSY Check the harness connection of the cover sensor harness ASSY and reconnect it Cover sensor harness ASSY failure Replace the cover sensor harness ASSY 3 Main PCB failure Replace the main PCB ASSY E Error code A2 Document Jam Clear the scanner jam then press the Stop Key The document is too long During scanning 90 cm or longer of a document is detected User Check e Check if the document is jammed in
167. lADLc POL BI6B PH K s LF Pa 285D D440J 111 188120 x0 x04 x0 20 Confidential m NCU PCB circuit diagram South Africa MJ 66J RD315 LF RA 242M C6 MJ 62J RD215 LF 1 YNN ogi xiran s1zB60 7101 100 174W 4 ee MWE ar SE a ENc121D 07A e apa ERZVO7D470 DTC123EK D5 ERAIS 04 10k 1 4wW KTD1411 P R18 1 5k R14 100k PHS gt t cr 6c Nt E MJ 44J RD315 LF xx zp MTZJ12 zp2 mrzg12 ci ac 3 L cor Gp 68k cs61 lcunc laue POL BI6B PH K S LF Confidential E Wiring Diagram 1 cN4 I l a sZ f n PI l lt i I m PLI es E i A Seg a ZE I zE sI K ee i g Sz g i H I ee lt Da 232 2 o 4 kzz om m I ou PL n I 3 Po z g ond 4 12 5 S I g a T Ss I 2 a RS 5 4 a PLI a S s ras 2 S ee amp P Lge I y I a CT 3 tow F a I ie 5 w H 1 2 Pt OS a v S DATA I 2 rt 2 Ci ssy 3 1 E H H 1 12 1 ul oF gt zaer fhe 2ARET 35 24V 24 v oO 244 24V fi 3 Sj ayi E m 2 _ ee 5V I GE l ONI SOV ir i
168. lick Next to proceed Brother Maintenance Device Driver Installer Welcome to the Brother Maintenance Device Driver This wizard will walk you through installing the drivers for your brother maintenance device To continue click Next 4 2 Confidential 6 An alert warning message of WHQL appears three times Click Continue Anyway to proceed Device Driver Installation Wizard The drivers are now installing Software Installation A The software you are installing has not passed Windows Logo testing to verify its compatibility with Windows XP Tell me why this testing is important Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microsoft strongly recommends that you stop this installation now and contact the software vendor for software that has passed Windows Logo testing Continue Anyway J STOF Installation 7 If the device driver is successfully installed the following message screen appears Click Finish to return Brother Maintenance Device Driver Installer Congratulations You are finished installing your brother maintenance device driver The drivers were successfully installed on this computer You can now connect your device to this computer If your device came with instructions please read them first Driver Name Status V Brother Maintenance Im Ready to use V Brother Mainten
169. ller ID service is available Not used 0 No 1 Yes 0 Auto switching between high speed Switching between high speed USB ver 2 0 and full speed USB USB and full speed USB ver 1 1 1 Fixed to full speed USB ver 1 1 Note e Selector 1 is applicable only to models equipped with flat bed scanners e Selectors 3 and 4 are applicable only to models supporting pseudo ringing of a connected external telephone Selector 1 Handling paper at the occurrence of a paper feed timing error When feeding paper to the print start position the machine might cause a feed timing error so that the registration sensor goes ON signaling the presence of paper This selector determines whether the machine prints on the current paper or ejects the current paper without printing and prints on the next paper Selectors 3 and 4 Delay of FAX line disconnection when switching to the pseudo ringing external telephone Not used When the machine receives a phone call it can make the connected external telephone ring so called pseudo ringing During pseudo ringing if you pick up the handset of the external telephone the line might be disconnected due to cut off of the line current To hold the line the machine may supply line current by making use of the pulse generator circuit that forms a parallel loop This way the FAX line disconnection may be delayed These selectors determine the delay period App 1 52 Confidential lt WSW48
170. lure Replace the FB unit 2 Main PCB failure Replace the main PCB ASSY E Error code AD Scan Unable AD Remove the original document Turn the power off then on again DMA transfer error Step Cause Remedy 1 FB unit failure Replace the FB unit 2 Main PCB failure Replace the main PCB ASSY Confidential E Error code AF Scan Unable AF Remove the original document Turn the power off then on again FB unit home position failure Step Cause Remedy 1 FB unit failure Replace the FB unit 2 Main PCB failure Replace the main PCB ASSY Error code BO Scanner Error Harness for scanning is not connected correctly This error is indicated on the LCD in the maintenance mode Step Cause Remedy 1 correctly Scanner harness not connected Reconnect the scanner harness correctly Scanner harness broken Replace the FB unit Main PCB failure Replace the main PCB ASSY Error code B7 Scanner Error Detection error of scanner Scanning reference voltage adjustment malfunction This error is indicated on the LCD in the maintenance mode Step Cause Remedy 1 FB unit failure Replace the FB unit 2 Main PCB failure Re
171. machine e When opening the front cover or back cover to access any parts inside the machine never touch the shaded parts shown in the following figures 1 CONSUMABLE PARTS The consumable parts described in this section are parts which are subject to deterioration or damage and should be replaced at least once during the period of warranty of the product if any printing quality problem appears Parts Name Approximate Life O Starter cartridge Approx 1 000 pages A4 Letter pages Standard cartridge Approx 1 500 pages A4 Letter pages High yield cartridge Approx 2 600 pages A4 Letter pages Drum Unit Approx 12 000 pages A4 Letter pages 1 page job a Approx cartridge yield is declared in accordance with ISO IEC 19752 Letter A4 2 1 Confidential 2 PERIODICAL PEPLACEMENT PARTS There are no parts to be replaced periodically 2 2 Confidential CHAPTER 3 DISASSEMBLY AND ASSEMBLY 1 SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling follow the warnings and precautions below during maintenance work WARNING e Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the machine e When opening the front cover or back cover to access any parts inside the machine never touch the shaded parts shown in the following figures e Be careful no
172. main unit cover opened Note Selectors 3 and 4 are applicable only to models equipped with cordless handsets e Selector 2 CR motor torque variation reduction control Not used Printing quality may be lowered due to changes in the head carriage travel speed resulting from variations in the torque of the CR motor during operation If selector 2 is set to 0 the CR motor drive current will be controlled so as to inhibit variations in torque resulting in a smooth CR motor rotation e Selectors 5 through 7 Microphone level and echo cancellation ON OFF Not used Microphone level 0 is the highest microphone volume setting The higher the microphone level the lower the microphone volume setting The microphone level can also be adjusted by means of a user function In other words the microphone level depends on the setting of the user function as well as on the setting by these selectors Using the echo cancellation function it is possible to reduce echoes both during speaking and hearing Selector 8 Support between nearly empty gt empty with main unit cover open after nearly empty detection Not used If this selector is set to 0 the nearly empty ink state if detected will be replaced by the empty ink state when the main unit cover is opened thus prompting the user to replace the ink cartridge immediately App 1 56 Confidential lt WSW52 gt Selector No Function Setting and Specifications 2 3 0
173. mpty Replace the toner cartridge with a new one e If the problem is not solved after printing a few pages the drum unit may have glue from label stuck on the exposure drum surface Refer to the previous page and wipe it off gently with a cotton swab The drum unit may be damaged Replace the drum unit with a new one Step Cause Check Result Remedy Toner attached Are the black spots at This problem will on the develop 41 0 mm develop roller disappear by printing 1 roller circumference Yes approximate 10 pages If intervals the same problem occurs replace the toner cartridge Scratch and Dirt Are the black spots at Replace the drum unit 2 on the exposure 75 0 mm exposure Yes drum drum circumference intervals Drum unit Are the electrodes on Clean both electrodes 3 connection the drum unit and Yes Refer to Fig 1 1 Fig 1 2 failure machine body dirty Scratch and Dirt Are the black spots at Replace the fuser unit on the heat roller 78 5 mm heat roller 4 Yes circumference intervals HVPS PCB Is the problem solved Replace the HVPS PCB 5 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 6 after replacing the main Yes ASSY PCB ASSY E Black band User Check e Clean the inside of the machine and the corona wire in the drum unit If the same problem occurs after cleaning replace the drum unit wit
174. n Maintenance Mode Code 13 Refer to 1 4 8 Operational Check of Control Panel Button Function code 13 in Chapter 5 and perform the operational check of control panel PCB Operational Check of Sensors Maintenance Mode Code 32 Refer to 1 4 10 Operational Check of Sensors Function code 32 in Chapter 5 and perform the operational check of sensors Acquisition of White Level Data and Set the CIS Scanner Area Maintenance Mode Code 55 Refer to 1 4 14 Acquisition of White Level Data Function code 55 in Chapter 5 and perform the acquisition of white level data and CIS scanner area setting Setting the serial number lt Procedures gt 1 Connect the PC and machine with the USB cable 2 Double click the brmainte EXE file maintenance utility which has been copied in the ALL2 folder to start Select Input Information from Menu Select the applicable model name i Printer Information Menu About Get information Decode maintenance data Input information Read write NYVRAM Send gt Read data Exit 4 6 Confidential 3 Check the port USB which the machine is connected through and click Serial No in the lower box Printer Information You can use this tool only when your printer is connected to a parallel port Select the LPT port 1 3 or the USB you are using and click OK Welle cg A LPT3 c USB xx KKK KKK K Adjust Scanner Default Paper Size Lett
175. n information check sum lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 2 and 5 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 25 appears on the LCD and then press the OK button The machine displays each of terms described below on the LCD 2 Press the A or Y button to check the next term LCD Description TOTL Ver A Main firmware version information Revision information NET Ver1 00 Network version information U0612271600 7BO0A Main firmware creation date amp check sum information B0608071049 5708 Boot program creation date amp check sum information How to display the checksum information Terms displayed with have the checksum information as well Press the OK button when its version information is displayed on the LCD Press the OK button again to go back to the version information display Press the A or W buttons to check the next term Note If you press the OK button when each version information of Network is displayed on the LCD you cannot check the checksum information To terminate this operation press the Stop Exit button The machine beeps for one second and returns to the initial stage of the maintenance mode 5 15 Confidential 1 4 10 Operational Check of Sensors Function code 32 lt Function gt This function allows you to check the nine sen
176. nal the two Feeder gear 17 terminals and the Bush 6 Feeder gear 17 terminal lt Left side gt Fig 3 106 Confidential 3 103 4 Remove the Taptite cup S M3x6 SR screw and the Taptite bind B M4x12 screw and then remove the Under FG wire from the Main body Taptite cup S M3x6 SR lt Left side gt Se iS SS Under FG wire Fig 3 107 3 104 Confidential 5 Remove the four Taptite bind B M4x12 screws and the two Taptite cup S M3x6 SR screws and then remove the Main frame L ASSY from the Main body Memo e Ensure you remove the Main frame L ASSY with the DEV joint link pulled out as shown Taptite bind B M4x12 me Taptite cup S M3x6 SR Sa eo TK aR A W Y Q lt ta 4 o MON ZON NY y 20 Main frame L ASSY Taptite bind B M4x12 Taptite bind B M4x12 lt Upper surface of Main frame L ASSY gt Taptite cup S M3x6 SR Drive sub ASSY Taptite bind B M4x12 Fig 3 108 3 105 Confidential CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT 1 IF YOU REPLACE THE MAIN PCB Note When replace the main PCB the function of the FAX disappears Contact the customer to
177. nce of the photosensitive layer is increased making it impossible to obtain the correct contrast when printing e Condensation on the charge unit may cause corona charge leakage e Condensation on the plate and separation pad may cause paper feed failures If condensation has occurred leave the machine for at least 2 hours to allow it to reach room temperature If the drum unit is unpacked soon after it is moved from a cold place to a warm room condensation may occur inside the unit which may cause incorrect images Instruct the end user to allow the unit to come to room temperature before unpacking it This will take one or two hours 1 4 Confidential 2 Cleaning Use a soft dry cloth CAUTION DO NOT use flammable substances or any type of spray to clean the inside or outside of the machine Doing this may cause a fire or electrical shock 1 5 Confidential 2 2 1 ERROR CAUSE This machine includes a self diagnosis function If the machine does not work normally it judges that an error has occurred For example Print Unable 6A and indicates the corresponding error message on the LCD which in turn helps the end user to quickly identify the problem The error code is possible to display by the Maintenance mode 82 Refer to 1 4 19 Error Code Indication Function code 82 in Chapter 5 Error indication The error codes shaded in the table below are recoverable errors if you follow the User Check items
178. nd 8 Tone sound monitoring These selectors set monitoring specifications of the tone sound inputted from the line App 1 23 Confidential lt WSW19 gt Selector No Function Setting and Specifications ie First transmission speed choice for fallback jo 2 400 bps 4 800 bps 7 200 bps 9 600 bps 12 000 bps 14 400 bps 14 400 bps 14 400 bps Permitted 1 Prohibited Permitted 1 Prohibited Last transmission speed choice for fallback 2 5 0 0 1 1 0 0 1 1 or 0 t0 0 0 V 34 mode V 17 mode o o jrtr s 000 Note Selector 7 takes effect only in models supporting V 34 mode e Selectors 1 through 6 First and last choices of transmission speed for fallback These selectors are used to set the MODEM speed range With the first transmission speed choice specified by selectors 1 through 3 the machine attempts to establish the transmission link via the MODEM If the establishment fails the machine automatically steps down to the next lowest speed and attempts to establish the transmission link again The machine repeats this sequence while stepping down the transmission speed to the last choice specified by selectors 4 through 6 If the MODEM always falls back to a low transmission speed e g 4 800 bps set the first transmission speed choice to the lower one e g modify it from 12 000 bps to 7 200 bps in order to deactivate the high speed MODEM function and
179. ne try to change the current control to be applied immediately after connection of the line by using selectors 5 and 6 If selectors 5 and 6 are set to 0 and 1 respectively the SDAA draws more current decreasing the period required to terminate the current control If they are set to 1 and 0 the SDAA finely controls precision of the termination current against the voltage to approach nearer to the specified DC curve that specifies the current vs voltage characteristics of the network termination Selecting either control may solve an unstable connection problem App 1 55 Confidential lt WSW51 gt Selector No Function Setting and Specifications Output of communications error report when transmission 0 Enable 1 Disable verification report is disabled CR motor torque variation reduction control Not used ete ae No 3 4 0 Middle Default 1 Low 0 High 1 Very high 6 7 O 0 Microphone level 0 with echo cancellation OFF Main unit microphone level and 0 1 Microphone level 1 with echo cancellation ON OFF echo cancellation ON function Not used 0 Microphone level 2 with echo cancellation ON O 1 1 Microphone level 3 with echo cancellation ON Cordless handset microphone volume Not used Support between nearly empty 0 Empty state detected when main unit empty when main unit cover cover opened opened after nearly empty 1 Nearly empty state maintained when detected Not used
180. nennaes 5 35 2 2 Resetting the developing bias voltage counter o oo eee eeeeeeeeneeeeeeeeeneeeeeeeeneeeeeetenaeeeeeeeeaaees 5 36 CHAPTER 6 CIRCUIT DIAGRAMS WIRING DIAGRAM cs eeeeeeeeeeeees 6 1 APPENDIX 1 WORKER SWITCH Settings WSW ccccccccceeeseeeeeeseeeees App 1 1 APPENDIX 2 DELETION OF PERSONAL INFORMATION 0000005 App 2 1 APPENDIX 3 SERIAL NUMBERING SYSTEM eecsccceeeeeeeeseseeeeeeeeees App 3 1 APPENDIX 4 SCREW CATALOGUE scscsssssscssstsssessnssssessnsessessesnnseees App 4 1 APPENDIX 5 GEOSSAR ierni paai App 5 1 APPENDIX 6 REFERENCES sccssccstciscccteccsicsccsartrresvewadscisessiesssbekecideusscnisuns App 6 1 vii Confidential REGULATION lt For Europe and Other countries gt E Radio interference 220 to 240 volt model only This machine follows EN55022 CISPR Publication 22 Class B E IEC 60825 1 specification 220 to 240 volt model only This machine is a Class 1 laser product as defined in IEC 60825 1 specifications The label shown below is attached in countries where it is needed CLASS 1 LASER PRODUCT APPAREIL A LASER DE CLASSE 1 LASER KLASSE 1 PRODUKT This machine has a Class 3B laser diode which produces invisible laser radiation in the laser unit You should not open the laser unit under any circumstances Caution Use of controls or adjustments or performance of procedures other than those specified in this manual may result in hazardous rad
181. ng for the number of the copies Effective for the print from the PC When set the number of the copies on the PC the setting becomes effective And this setting is ignored Default 1 ORIENTATION Portrait Landscape Configure the setting for the print direction Effective for the print from the PC Default Portrait P POS X OFFSET 500 to 500 Configure the setting for the offset print position of the landscape orientation Effective for the print from the PC When set the X Offset on the PC the setting becomes effective And this setting is ignored Default 0 P POS Y OFFSET 500 to 500 Configure the setting for the offset print position of the portrait orientation Effective for the print from the PC When set the Y Offset on the PC the setting becomes effective And this setting is ignored Default 0 5 20 Confidential Function Set value Problem AUTO OFF ON OFF Configure the setting for the ON OFF of the Auto Form Feed Effective for the print from the PC Default 0 AUTO OFF TIME 1 to 99 Configure the setting for the Time Out when the Auto Form Feed is ON Default 5 FF SUPPRESS ON OFF Configure the setting for the skip of the blank page Effective for the print from the PC The blank data in the Copy Fax cannot be turned ON OFF in this setting Default OFF AUTO LF ON OFF Configure the setting for the auto line feed D
182. ng to repair the machine Operating Environment 1 Put your machine on a flat stable surface such as a desk that is free of vibration and shocks 2 Use the machine in a well ventilated room use the machine within the following ranges of temperature and humidity temperature between 10 C and 32 5 C 50 F to 90 5 F and the relative humidity is maintained between 20 and 80 3 The machine is not exposed to direct sunlight excessive heat moisture or dust Power Supply 1 The AC input power supply described on the rating plate of the machine should be within 10 of the rated voltage 2 The AC input power supply is within the regulated value 3 The cables and harnesses are connected correctly 4 The fuses are not blown Paper 1 A recommended type of paper is being used Refer to 2 6 Paper Reference 1 of the Service Reference Manual 2 The paper is not damp 3 The paper is not short grained paper or acid paper Consumable Parts 1 The drum unit including the toner cartridge is installed correctly Others 1 Condensation When the machine is moved from a cold place into a warm room condensation may occur inside the machine causing various problems as listed below e Condensation on the optical surfaces such as the scanner window lenses the reflection mirror and the protection glass may cause the print image to be light e If the exposure drum is cold the electrical resista
183. nsmission 32 02 Remote terminal not ready for polling 32 10 Remote terminal not equipped with password function or its password switch OFF 32 11 Remote terminal not equipped with or not ready for confidential mailbox function Remote terminal not equipped with or not ready for relay 32 12 f broadcasting function 32 13 No confidential mail in the remote terminal The available memory space of the remote terminal is less than 32 14 that required for reception of the confidential or relay broad casting instruction 32 18 Remote terminal not equipped with color function 4 Instructions received from the remote terminal checking the NSC DTC NSS and DCS Code 1 Code 2 Causes 40 02 Invalid coding system requested 40 03 Invalid recording width requested 40 05 ECM requested although not allowed 40 06 Polled while not ready 40 07 No document to send when polled 40 10 Nation code or manufacturer code not correct 40 13 Polled by any other manufacturers terminal while waiting for secure polling 40 17 Invalid resolution selected 40 20 Invalid full color mode selected 5 Command reception checking the NSF and DIS after transmission of NSS and DCS Code 1 Code 2 Causes 50 01 Vertical resolution capability changed after compensation of background color 1 48 Confidential 6 ID checking
184. nt cover 5 36 Confidential High voltage Power Supply PCB Circuit Diagram CN4 AL vcc 24v 24VRET r GEE ca R7 RB a4 RS R10 ro 9 OO OO ca Hi4 a c4 HH D3 H Le CHAPTER6 CIRCUIT DIAGRAMS WIRING DIAGRAM J PWM CHG Q Rat A SHUT DOWN c22 im i Ree R27 vcc3 3v R20 cat PWM DEV R19 GRIDC R30 R38 GRID R25 pea R18 R24 R22 R17 Ji o 1 2 DEV R48 C42 p42 Ras R47 Rat R45 Dt 54o FB VCLN VCLN 27 f J y FB TR ict FB DEV g FB GRID D103 D104 E K D102 BO L 1 KH D106 rca D105 FB TRCCV u7 PWM TRCC R56 cs8 ASS 4 D52 P423 R125 R127 R29 R134 R133 R135 70 7TRCV 071 R74 Rize R76 R124 P78 R128 ABO Ree R128 P130 Sov CN2 T1 SOL tio T4 SOL vec24v CN3 veceav Q REG SOL REG_SOL 6 1
185. ntial E Error code 63 Toner Life End Replace Toner Cartridge Toner cartridge is at the end of its life The toner sensor detects the nearly empty or the drum counter reached the upper limit User Check e Gently shake the toner cartridge from side to side and install it again e Replace the toner cartridge Step Cause Remedy Harness connection failure of new Check the sensor performance following toner sensor harness ASSY the procedure described in Maintenance 1 mode 32 If any problem occurs check the harness connection of the new toner sensor harness ASSY then reconnect it Harness connection failure of Check the sensor performance following toner sensor PCB unit ASSY the procedure described in Maintenance 2 mode 32 If any problem occurs check the harness connection of the toner sensor PCB unit ASSY then reconnect it 3 New toner sensor harness ASSY Replace the new toner sensor harness failure Toner empty ASSY 4 Toner sensor PCB unit ASSY Replace the toner sensor PCB unit ASSY failure 5 Main PCB failure Replace the main PCB ASSY 1 10 Confidential E Error code 68 Print Unable 68 See Troubleshooting and routine maintenance chapter in User s Guide Fuser unit failure The side thermistor detects higher temperature than the specified value Error code 69 Print Unable 69 See Troubleshooting and rout
186. o Function Setting and Specifications Z o o gt 48 dBm 50 dBm 52 dBm 54 dBm 56 dBm 58 dBm 60 dBm Default 62 dBm Detection threshold level of no tone during recording of ICM Not used O0O 0 0O0 0 14 400 bps 12 000 bps 9 600 bps 7 200 bps FAX receiving speed to be kept within the transmission speed limit to the PC Not used o oa0o 00 O008ND 0 0 0 0 1 1 1 1 4 0 0 1 1 Report output of polled transmission requests 0 OFF Comfortable noise level 1 Low A Not used 0 Medium B 1 High C Note Selectors 1 through 3 are applicable to models equipped with internal TADs e Selectors 1 through 3 Detection threshold level of no tone during recording of ICM Not used If the tone level during recording of ICM is less than the threshold setting made by these selectors the tone is interpreted as no tone When the no tone state is kept for the period specified by selectors 1 through 5 on WSW21 the machine disconnects the line Selectors 4 and 5 FAX receiving speed to be kept within the transmission speed limit to the PC Not used To transmit FAX data being received from other machine to the connected PC you may need to keep the FAX receiving speed within the transmission speed limit specified for the PC In an initial negotiation sequence for transmission the machine responds to the calling station wi
187. o remove the Edge actuator from the Actuator holder ASSY Edge actuator spring Edge actuator 8 Remove the Taptite bind B M3x10 screw and then remove the Registration front sensor PCB ASSY from the Actuator holder ASSY Taptite bind B M3x10 se Registration front sensor PCB ASSY Actuator holder ASSY 3 84 Confidential 8 31 REGISTRATION REAR SENSOR PCB ASSY 1 Remove the Harness of the Registration rear sensor PCB ASSY from the Guide part of the Main body o Harness Guide part Fig 3 87 3 85 Confidential 2 Remove the two Taptite bind B M3x10 screws and then remove the Rear actuator holder ASSY from the Main body Taptite bind B M3x10 Rear actuator holder ASSY Fig 3 88 3 86 Confidential 3 Remove the Actuator spring rear from the Hook part 4 Turn the Registration actuator rear 5 Slide the Registration actuator rear to remove the Registration actuator rear from the Rear actuator holder ASSY Registration actuator rear Fig 3 89 6 Remove the Taptite bind B M3x10 screw and then remove the Registration rear sensor PCB ASSY from the Rear actuator holder ASSY Registration rear sensor PCB ASSY Taptite bind B M3x10 Rear actuator holder ASSY 3 87 Confidential 8 32 DRIVE SUB ASSY 1 Remove the Taptite cup S M3x6 SR screw and the Taptite bind B M4x12 screw and then remove the Under FG wire from the Main body Taptite cu
188. ode functions User switches Worker switch Refer to Appendix 1 These will be initialized Remote activation code Registered message for cover page comment All of these will be Forwarding paging number PIN number initialized Outside line number These will not be Telephone function registration initialized One touch dialing Speed dialing Group dialing Note If you replace the main PCB with the one used for any other machine carry out this procedure and then customize the EEPROM maintenance mode function code 74 in Section 1 4 16 lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 0 and 1 buttons or the 9 and 1 buttons according to your need in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or button MAINTENANCE 01 or MAINTENANCE 91 appears on the LCD and then press the OK button The PARAMETER INIT will appear on the LCD 2 Upon completion of parameter initialization the machine beeps for one second and returns to the initial stage of the maintenance mode 5 3 Confidential 1 4 2 Printout of Scanning Compensation Data Function code 05 lt Function gt The machine prints out the black and white level data for scanning compensation lt Operating Procedure gt Do not start this function merely after powering on the machine but start it after carrying out a sequence of scanning operation Unless the machine has ca
189. on When the data include the ENTER LANGUAGE the setting becomes effective And this setting is ignored Default AUTO AUTO I F TIME 1 to 99 Configure the setting for the I F open time The function is in the PC Print When the PC Scan Remote setUp works on the way the setting becomes invalid Default 5 MEDIA TYPE Thin Plain Thick Thicker Trancparency Recycled Bond Envlopes EnvThin EnvThick Configure the setting for the type of the recording paper Effective for the print from the PC When set the type of the recording paper on the PC the setting becomes effective And this setting is ignored The default value is different by the country setting in the Laser product As for the basics the Plain is the default value However the Thin may be became the default value in JPN CHN Default Plain Thin change in each country PAPER SIZE Letter Legal A4 Executive B5 JISB5 A5 B6 A6 Monarch C5 COM10 DL DLL A4Long PostCard Folio Configure the setting for the size of the recording paper Does not set the Paper Size of the Menu set the drawing size of the PC Print When set the size of the recording paper on the PC the setting becomes effective And this setting is ignored The default value is different by the country setting in the Laser product US CAN are the Letter and others are the A4 Default Letter A4 change in each country COPIES 1 to 999 Configure the setti
190. ook to remove the LED holder from the Toner LED PCB ASSY Toner LED PCB ASSY LED holder Fig 3 78 3 77 Confidential 8 29 LVPS 8 29 1 LVPS PCB UNIT 1 Remove the Taptite pan S P washer M3 5x6 screw and the two Taptite cup S M3x6 SR screws and then remove the LV shield plate cover and the LV insulation sheet from the LV Shield plate 2 Taptite cup S M3x6 SR LV insulation sheet LV shield plate cover ee Taptite pan S P washer M3 5x6 Taptite cup S M3x6 SR Fig 3 79 3 78 Confidential 2 Remove the Taptite bind B M4x12 screw and then remove the SW holder from the Main body 3 Remove the Taptite pan S P washer M3 5x6 screw and then remove the FG harness ASSY of the Inlet harness ASSY from the LV shield plate 2 4 Remove the two Taptite flat B M3x10 screws and then remove the Inlet harness ASSY from the Main body 5 Remove the two Taptite cup S M3x6 SR screws and then remove the LVPS PCB unit from the LV shield plate 2 6 Remove the two Edge holder 3 from the LV shield plate 2 7 Disconnect the Connector from the LVPS PCB unit LV shield plate 2 Edge holder 3 LVPS PCB unit SW holder 2 Taptite flat B M3x10 LV shield plate 2 Connector Taptite bind B M4x12 LVPS PCB unit Taptite pan a ee Inlet harness ASSY Taptite cup S M3x6 SR FG nanness ASSY Fig 3 80 3 79 Confidential 8 29 2 LV SHIEL
191. ook to slide the Document front actuator 2 Remove the Document front actuator from the Lower document chute ASSY 3 Pull the Hook to slide the Document rear actuator 4 Remove the Document rear actuator from the Lower document chute ASSY A Document front actuator N Hook Lower document chute ASSY Fig 3 36 3 41 Confidential 5 Release the Hook to remove the ADF sensor PCB ASSY from the Lower document chute ASSY 6 Disconnect the Connector from the ADF sensor PCB ASSY Connector ADF sensor PCB ASSY Lower document chute ASSY Fig 3 37 3 42 Confidential 8 11 9 LF ROLLER ASSY 1 Release the Hook to remove the LF roller bushing from the Lower document chute ASSY 2 Remove the LF roller ASSY from the Lower document chute ASSY LF roller ASSY Lower document chute ASSY LF roller bushing Fig 3 38 CAUTION Be careful not to get grease on the roller 3 43 Confidential 8 11 10EJECTION ROLLER ASSY 1 Release the Hook of the Ejection roller bushing and then slide the Ejection roller ASSY to remove the Ejection roller ASSY from the Lower document chute ASSY Ejection roller ASSY Lower document chute ASSY Fig 3 39 CAUTION Be careful not to get grease on the roller 3 44 Confidential 8 11 11 DRIVE FRAME ASSY 1 Remove the Taptite cup S M3x6 SR screw and then remove the FG harness from the Lower document chute AS
192. othly No smoothly or catching Foreign object Is there a foreign object Remove the foreign object 2 around paper around the paper feed Yes feed roller roller Paper feed roller Is the surface of the Replace the separate roller 3 failure paper feed roller worn Yes shaft ASSY out ADF sensor PCB Is the problem solved by Replace the ADF sensor 4 replacing the ADF Yes PCB sensor PCB ADF motor Is the problem solved by Replace the ADF motor 5 failure replacing the ADF Yes motor Drive frame Is the problem solved by Replace the drive frame 6 ASSY failure replacing the drive Yes ASSY frame ASSY Main PCB failure Is the problem solved Replace the main PCB 7 after replacing the main Yes ASSY PCB ASSY 4 2 Double feeding Step Cause Check Result Remedy Separation Is the surface of the Replace the separation 1 rubber failure separation rubber worn Yes rubber out described in the step column in the tables below 1 27 Confidential 4 3 Paper Jam User Check e Check if the paper is loaded into the ADF tray correctly e Check if do not use the crimpy or torn paper Step Cause Check Result Remedy Document rear Does document rear Re assemble the actuator not actuator move document rear actuator 1 operating smoothly No smoothly or catching Foreign object Is there a foreign object Remove the foreign o
193. p S M3x6 SR o E S S S Tontite bind B M4x12 Under FG wire Fig 3 91 Confidential 3 88 2 Remove the Taptite cup S M3x6 SR screw and the nine Taptite bind B M4x12 screws and then remove the Drive sub ASSY from the Main body Taptite bind B M4x12 Drive sub ASSY Taptite cup S M3x6 SR Taptite bind B M4x12 a Taptite bind B M4x12 Taptite bind B M4x12 Sy z CAUTION When removing the Drive sub ASSY Ensure the left side of the Main body is at the top as shown in the above figure because there is the risk of the gears falling off 3 89 Confidential 8 33 DEV JOINT DEV GEAR JOINT 53R REGISTRATION PENDULUM GEAR SPRING 1 Remove the DEV joint and the DEV joint spring from the DEV gear joint 53R 2 Remove the DEV gear joint 53R from the Drive sub ASSY 3 Remove the Registration pendulum gear spring from the Drive sub ASSY DEV joint B p DEV joint spring Registration pendulum gear spring Se t Drive sub ASSY Fig 3 93 3 90 Confidential 8 34 THERMISTOR HARNESS UNIT 1 Remove the Thermistor harness unit from the Main body Thermistor harness unit 7 lt Left side gt N J N p ay 7 7 E f A a 5A Ve rs T ra Ma k Ss S Q D Py Te gt a aN Y9 n lt 4 pa e Se A yS WZ LY Fi
194. pattern on a page whose interval is 1cm lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 6 and 7 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 67 appears on the LCD and then press the OK button 2 The PAPER FEED TEST will appear The test printing is started and the grid pattern is printed 3 Press the Stop Exit button so that machine stops printing Then it beeps for one second and returns to the initial stage of the maintenance mode Note e In the case that the front cover is opened or that there is no paper in the tray during test printing the test printing is stopped e Continue being printed till the recording paper disappears as far as push the Stop Exit button or open the front cover 5 26 Confidential 1 4 16 EEPROM Customizing Function code 74 lt Function gt This function allows you to customize the EEPROM according to language function settings and worker switch settings Note If you replace the main PCB be sure to carry out this procedure lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 7 and 4 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 74 appears on the LCD and then press the OK button The current customizing code appears 2 Enter the desired customizing code
195. place the main PCB ASSY Error code B9 Scanner Error Scanning light adjustment error is detected This error is indicated on the LCD in the maintenance mode Step Cause Remedy 1 FB unit failure Replace the FB unit 2 Main PCB failure Replace the main PCB ASSY 1 20 Confidential E Error code BB Scanner Error White level data error This error is indicated on the LCD in the maintenance mode Step Cause Remedy 1 FB unit failure Replace the FB unit 2 Main PCB failure Replace the main PCB ASSY E Error code E6 Init Unable E6 See Troubleshooting and routine maintenance chapter in User s Guide NVRAM error on main PCB Step Cause Remedy 1 Main PCB failure Replace the main PCB ASSY E Error code EC Print Unable EC See Troubleshooting and routine maintenance chapter in User s Guide Fan performance malfunction Step Cause Remedy 1 Harness connection failure of fan motor Check the harness connection of the fan motor and reconnect it Fan motor failure Replace the fan motor Main PCB failure Replace the main PCB ASSY E Error code F8 Machine Error F8 Battery connection failure Step Cause Remedy 1 Battery harness connection failure Reconnect t
196. pseudo ring backtone to the line These selectors are used to adjust the sound volume of a ring backtone in the F T mode an on hold sound or a beep generated as a signal during remote control operation or at the start of ICM recording The larger the value specified by these selectors the greater the attenuation App 1 5 Confidential lt WSW03 gt Selector No Function Setting and Specifications CNG detection when sharing a modular wall socket with a 0 A 1 B telephone Z o N Detection time length of PABX dial tone required for starting dialing 3 4 000 00 1 010 O 1 1 100 101 110 111 CNG detection when sharing a modular wall socket with a telephone No detection 3 5 sec wait Dial tone detection in PABX No detection 5 sec wait No detection 7 sec wait Detection Frequency only Not used PABX Private automatic branch exchange Note Selectors 2 through 4 6 and 7 are not applicable where no PABX is installed e Selectors 1 and 5 CNG detection when sharing a modular wall socket with a telephone These selectors determine whether or not the machine detects a CNG signal when a line is connected to a telephone sharing a modular wall socket with the machine Upon detection of CNG signals by the number of cycles specified by these selectors the machine interprets CNG as an effective signal and then starts FAX reception Selector Cycle No 1 No 5
197. pying Note Do not access these selectors App 1 50 Confidential e Selector 7 Standby position of the CIS unit Not used This selector determines whether the standby position of the CIS unit should be the home position or the location of the white level reference film attached to the inside of the scanner top cover If the location of the reference film is selected the CIS unit will not return to the home position so as to shorten the travel time decreasing the preparation time for copying Selector 8 Line polarity reverse detection function Not used Line polarity will be reversed if the phone is hung up at the other end of the line If this selector is set to 1 the machine will detect the reverse polarity during an answering machine operation and thereby determine that the phone has been hung up lt WSW46 gt Selector No Function Setting and Specifications 2 0 Disable Monitoring the PC ON OFF 1 Monitor SELECT IN state 0 Monitor STROBE 1 Monitor both SELECT IN and STROBE Parallel port output pins kept at high level 0 Enable 1 Disable Previous filtering parameters for white level compensation Not used 0 Enable 1 Disable Not used Note Selector 4 is not applicable to models equipped with flat bed scanners e Selectors 1 and 2 Monitoring the PC ON OFF state For the related functions refer to WSW36 selectors 2 and 3 e Selector 3 Previous filtering paramet
198. r Edition Image Driver LaserJet HL 60500 HL 5270D HL 27006 Adobe PDF Select file s to be sent to the printer Brother Maintenance USB Printer on USB004 6 Click the Brother Maintenance USB printer driver in FILEDG32 to select 7 Drag the firmware LZXXXX_ upd in the same folder and drop it onto the icon of the Brother maintenance USB printer driver in FILEDG32 The firmware files are sent to the machine and they are written into the flash ROM automatically When the download starts the machine makes an intermittent bleep Upon completion of rewriting the machine is rebooted and returns to the ready state automatically Be sure not to disconnect the USB cable or turn off the power supply of the machine or PC before the rewriting is completed 8 Turn the power supply of the machine off 4 5 Confidential EEPROM Parameter Initialization of Main PCB Maintenance Mode Code 01 Refer to 1 4 1 EEPROM Parameter Initialization Function code 01 91 in Chapter 5 and perform the EEPROM parameter Initialization of main PCB EEPROM Customizing of Main PCB Maintenance Mode Code 74 Refer to 1 4 16 EEPROM Customizing Function code 74 in Chapter 5 and perform the EEPROM Customizing For models in France and surrounding countries Pan Nordic Oceania or Iberia implement the setting for Code 74 in Maintenance mode first Then implement more detailed settings for Code 52 Operational Check of Control Panel Butto
199. reduce the training time for shorter transmission time Generally to save the transmission time set the last transmission speed choice to a higher one Selector 7 V 34 mode If this selector is set to 0 selectors 5 through 8 on the WSW38 through WSW4O0 and on WSW41 will become effective App 1 24 Confidential lt WSW20 gt Selector No Function Setting and Specifications EP tone prefix 0 OFF 1 ON Overseas communications mode Reception 0 2100 Hz 1 1100 Hz Overseas communications ne OFF mode Transmission Q 1 Ignores DIS once 100 ms 200 ms 300 ms 400 ms Min time length from reception of CFR to start of transmission of video signals Yes at both ON OFF timings Yes at OFF timing No No FF At CNG detection elimination of chattering noise Not used ol 000 00RA Ol 0 onl 0 00 Limitation on CNG detection EP Echo protection Note Selectors 6 and 7 are applicable to models equipped with SDAA circuits e Selector 1 EP tone prefix Setting this selector to 1 makes the machine transmit a 1700 Hz echo protection EP tone immediately preceding training in V 29 modulation system to prevent omission of training signals Prefixing an EP tone is useful when the machine fails to transmit at the V 29 modem speed and always has to fall back to 4800 bps transmission The setting made by this selector takes effect only when th
200. ress in order the Menu Start and the A button four times to make the machine enter the maintenance mode TIP FAX models equipped with a numerical keypad can enter the maintenance mode in the same way as conventional models that is by pressing in order the Menu 2 8 6 4 buttons with in 2 seconds 2 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 0 and 1 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 01 appears on the LCD and then press the OK button Parameter initialization starts and the PARAMETER INIT appears on the LCD 3 Upon completion of parameter initialization the machine beeps for one second and returns to the initial stage of the maintenance mode 2 Unplugging the AC cord from the electrical outlet and disconnecting the backup battery Unplugging the AC cord from the electrical outlet and disconnecting the backup battery deletes the Caller ID list fax data received into memory transmission verification report for image broadcasting report and batch transmission data in the memory lt Operating Procedure gt 1 Unplug the AC cord from the electrical outlet 2 For models with backup battery disconnect the backup battery harness from the main PCB 3 Leave the machine for approx 24 hours App 2 1 Confidential 3 Restoring the network settings The procedure below allows you to return the LAN settings to the
201. ridge Are the electrodes on Clean both electrodes 1 electrode the toner cartridge and Yes Refer to Fig 1 1 Fig 1 2 connection machine body dirty failure Confidential E Faint print User Check e Check that the machine is installed on a level surface e Replace the toner cartridge with a new one e Clean the scanner windows of the laser unit with a soft cloth Step Cause Check Result Remedy Main PCB failure Is the problem solved after replacing the main PCB ASSY Yes Replace the main PCB ASSY Laser unit failure Is the problem solved after replacing the laser unit Yes Replace the laser unit Toner empty sensor failure Is the Toner Life End message indicated on the LCD after replacing the current toner cartridge with the empty toner cartridge No Replace the toner sensor PCB ASSY E White spots User Check Toner may be empty Replace the toner cartridge with a new one e If the problem is not solved after printing a few pages the drum unit may have glue from label stuck on the exposure drum surface Refer to the next page and wipe it off gently with a cotton swab The drum unit may be damaged Replace the drum unit with a new one Step Cause Check Result Remedy Toner attached Are the white spots at This problem will on the develop 41 0 mm develop roller disappear by printin
202. rol of modem s 0 1 No change from the current EQM gain for proper setting transmission speed choice For lower transmission speed than the current setting For further lower transmission than the setting made by 1 0 Redialing when a communications error occurs Detection of CED for stopping CNG 0 ON 1 OFF 0 ON 1 OFF Note WSW38 takes effect only when the V 34 mode is permitted WSW19 selector 7 in models supporting V 34 mode e Selectors 1 and 2 Setting of the equalizer These selectors set the equalizer s training level to be applied if the machine fails to send training due to weak line connection If these selectors are set to 0 X the modem will automatically set the appropriate training level Selector 3 Sending level of guard tone at phase 2 This selector sets the sending level of guard tone for 1800 Hz to be sent at Phase 2 in the V 34 mode Selector 4 Stepping down the transmission speed at fallback each This selector determines how much the modem steps down the transmission speed at fallback when called by the remote station If this selector is set to 1 the modem may step down the transmission speed from 33600 bps to 28800 bps by one time fallback Selectors 5 and 6 Automatic control of modem s EQM gain for proper transmission speed choice These selectors determine how the modem controls the EQM Eye Quality Monitor gain for proper choice of the transmission speed which applies if
203. rried out any scanning operation this function cannot print out correct scanning compensation data This is because at the start of scanning operation the machine initializes black and white level data and takes in the scanning compensation reference data 1 Take a black and white copy 2 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 0 and 5 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 05 appears on the LCD and then press the OK button The PRINTING will appear on the LCD 3 The machine prints out the scanning compensation data list containing the following E Black and white scanning a LED PWM data 1Byte b LED pulse data G 2Byte c REFH PWM data 1Byte d Background color 1Byte compensated data e Black level data Depends on the number of pixels of the previous scanning f White level data Depends on the number of pixels of the previous scanning 4 Upon completion of recording of the compensation data list the machine beeps for one second and returns to the initial stage of the maintenance mode Note If an incorrect value is found the machine prints out the data with the reversal format white on black 5 4 Confidential E Print sample yoropev My HS BY BY uY ka EY EY bY Ke EY UY by us BY 99 Borsbe10 Ba Ba B3 g3 ga a ES 63 69 Ee 6a 63 S8 83 99 Se Sors8220 69 63 Ba 58 87 Eb 63 63 63 68 63 6
204. s Z o _ o gt 0 dB 1 dB 2 dB 3 dB 0 dB 1 dB 2 dB 3 dB Transmission level of DTMF high band frequency signal 0 dB 1 dB 2 dB 3 dB 0 dB 1 dB 2 dB 3 dB Transmission level of DTMF low band frequency signal 00 000 0022 00N E TE T SO ee Oe OS 0 0 0 0 1 1 1 1 4 0 0 0 0 1 1 1 1 Not used e Selectors 1 through 6 Transmission level of DTMF high low band frequency signal These selectors are intended for the manufacturer who tests the machine for the Standard Never access them App 1 33 Confidential lt WSW29 gt Selector No Function Setting and Specifications Z o _ eo 47 0 dBm 48 5 dBm 50 0 dBm 51 5 dBm 53 0 dBm 54 5 dBm 56 0 dBm OFF Compression threshold level for voice signals inputted via the telephone line in the built in TAD operation Not used 44 0 dBm 45 5 dBm 47 0 dBm 48 5 dBm 50 0 dBm 51 5 dBm 53 0 dBm OFF Compression threshold level for voice signals inputted via the handset in the built in TAD operation Not used 00 000 00 00N 0 0 0 00 090 0 0 gt 0 0 0 0 0 1 1 1 1 4 0 0 0 0 1 1 1 1 Impedance switching control in pulse dialing Not used Prompt beep when the memory area for the activity report becomes full Not used Note e Selectors 1 through 6 are applicable
205. se set by selectors 5 and 6 Selector 7 Switching between pulse and tone dialing by the function switch This selector determines whether or not the dialing mode can be switched between the pulse DP and tone PB dialing by using the function switch Selector 8 Default dialing mode pulse DP or tone PB dialing This selector sets the default dialing mode pulse dialing or tone dialing which can be changed by the function switch If the user switches it with the function switch when selector 7 is set to 0 the setting specified by this selector will also be switched automatically App 1 4 Confidential lt WSW02 gt Selector No Function Setting and Specifications 70 ms 80 ms 90 ms 100 ms Tone signal transmission time length 70 ms 80 ms 90 ms 140 ms Min pause in tone dialing 2 0 1 0 1 4 0 1 0 1 Attenuator for pseudo ring 0 dB backtone to the line selectable 0 dB in the range of 0 15 dB in 1 dB 0 dB 1 1 1 increments OdB 1 e Selectors 1 through 4 Tone signal transmission time length and Min pause in tone dialing These selectors set the tone signal transmission time length and minimum pause in tone dialing Example If 1 2 3 4 and 5 are dialed Tone signal transmission time length set by selectors 1 and 2 q o g 4 5 Min pause set by selectors 3 and 4 e Selectors 5 through 8 Attenuator for
206. sed Setting two or more selectors to 1 produces addition of attenuation assigned to each selector This setting is not limited by selector 8 on WSW23 App 1 29 Confidential lt WSW25 gt Selector No Function Setting and Specifications Zz 9 0 sec 8 sec 16 sec 24 sec External TAD no tone detection start delay time Not used 2 0 1 0 1 4 0 43 dB 1 46 dB 0 49 dB 1 51 dB 6 0 0 1 1 0 0 1 1 External TAD no tone detection level Not used N 2 sec 4 sec 6 sec 8 sec 10 sec 12 sec 14 sec 16 sec Pause between paging number and PIN a es se se O O O O E a a O O A a a O S _ oO O70 0 Not used Note Selectors 1 through 4 are not applicable in cases of models designed for the US market models not equipped with a function of detection for no tone with external TAD nor for models equipped with the Rockwell modem V24 Selectors 5 through 7 are applicable to the U S A models only Selectors 1 and 2 External TAD no tone detection start delay time Not used Valid only for the external TAD mode This machine will delay the start of detection for no tone by the length of time set by selectors 1 and 2 The sum of the detection delay time setting and the waiting time for no tone detection setting by selectors 1 through 5 of WSW21 must be within 40 seconds or less Selectors 3 and 4 External TAD no tone detection le
207. sed This selector determines whether or not the ringer can be set to OFF e Selector 3 Automatic playback of OGM when switched to the TAD mode Not used This selector determines whether or not to automatically play back an OGM the moment the machine switches to the TAD mode e Selectors 4 Detection of distinctive ringing pattern Not used If this selector is set to 1 the machine detects only the number of rings if it is set to 0 the machine detects the number of rings and the ringing time length to compare the detected ringing pattern with the registered distinctive one e Selector 6 Recording quality Not used This selector determines the recording quality for the OGM and ICM Selecting 1 High increases the quality sacrificing the recording time e Selector 7 Recording time for high recording quality Not used This setting takes effect when selector 6 is set to 1 High Setting this selector to 0 Short further increases the recording quality sacrificing the recording time The recording quality and time to be applied when this selector is set to 1 Long are higher and shorter than the ones to be applied when selector 6 is set to 0 Normal The recording quality and time determined by this selector being set to 1 Long are higher and shorter than the ones determined by selector 6 being set to 0 Normal App 1 32 Confidential lt WSW28 gt Selector No Function Setting and Specification
208. sion of RTN 0 Tea 1 0 10 1 1 8 Not used Limitation of attenuation level 0 Yes 1 No Note Selector 8 is not applicable to the French models Selector 1 Starting point of training check TCF At the training phase of receiving operation the called station detects for 1 0 second a training check TCF command a series of zeros which is sent from the calling station for 1 5 seconds to verify training and give the first indication of the acceptability of the line This selector sets the starting point from which the called station should start counting those zeros If this selector is set to 0 the called station starts counting zeros 100 ms after the head of a series of zeros is detected If it is set to 1 the called station starts counting zeros upon detection of 10 ms successive zeros 50 ms after the head of a series of zeros is detected In this case if the detection of 10 ms successive zeros is too late the data counting period will become less than 1 0 second making the called station judge the line condition unacceptable Selectors 2 and 3 Allowable training error rate The called station checks a series of zeros gathered in training as described in Selector 1 according to the allowable training error rate set by these selectors If the called station judges the line condition to be accepted it responds with CFR if not it responds with FTT Selectors 4 and 5 Decoding error rate for transmission of RTN The
209. sors for normal operation lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 3 and 2 buttons in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 32 appears on the LCD and then press the OK button The machine beeps 1100 Hz and 400 Hz tones cyclically through the following volumes for testing the speaker To stop beeping press the Menu button or OK button 400 Hz Low Medium High OFF OFF 1100 Hz Low Medium High If the sensing status are as listed below the LCD will show the following DFDRCV and NTMNRSTNKOFU which can be switched by pressing the Start button for machines Given below is the relationship between the LCD indication sensor names and sensor status LCD Sensors Sensing status DF Document front sensor No document detected DR Document rear sensor No document detected CV Cover sensor Front cover closed NT New toner sensor New toner detected MN Manual insertion sensor No paper detected RS Registration sensor No paper detected TN Toner sensor Toner detected KO Edge sensor No paper detected FU Eject sensor No recording paper detected Only DCP7030 5 16 Confidential E Location of sensors New toner sensor ADF sensor PCB ASSY Toner sensor Toner LED PCB ASSY Cover sensor Paper eject sensor Eject sensor
210. ssion speed App 1 44 WSW40 V 34 modem settings App 1 45 wswa41 ON duration of the scanning light source App 1 47 WSW42 Internet mail settings App 1 48 WSW43 Function setting 21 App 1 48 wsw44 Speeding up scanning 1 App 1 49 WSW45 Speeding up scanning 2 App 1 50 WSW46 Monitor of power ON OFF state and parallel port kept at high App 1 51 WSW47 Switching between high and full speed USB App 1 52 WSW48 USB setup latency App 1 53 WSW49 End of copying beep and print in black App 1 54 WSW50 SDAA settings App 1 55 WSW51 Function setting 16 App 1 56 WSW52 Function setting 17 App 1 57 WSW53 Function setting 18 App 1 58 WSW54 Function setting 19 App 1 59 WSW55 Function setting 20 App 1 60 WSW56 Function setting 21 App 1 60 WSW57 Function setting 22 App 1 61 WSW58 Function setting 23 App 1 62 WSW59 Function setting 24 App 1 63 WSW60 Not used App 1 63 WSW61 Scanning light intensity to judge to be stable 1 App 1 64 WSW62 Scanning light intensity to judge to be stable 2 App 1 65 WSW63 Not used App 1 66 5 9 Confidential lt Operating Procedure gt MFC7840W 7840N 7450 7440N 7340 7320 1 Press in order the 1 and 0 buttons in the initial stage of the maintenance mode The machine displays the WSW00 on the LCD and becomes ready to accept a firmware switch number 2 Enter the desired number from the firmware switch numbers 01 through 63 The following appears on the LCD Selector 1 Selector 8 WSW
211. t selectors However some of them cannot be set by an end user Only selectors in the worker switch setting tables of this Appendix that are shaded can be set by an end user The worker switch setting procedure is described in Chapter 5 Section 1 4 6 1 Worker Switch Setting Function code 10 E Worker Switch Function Refer to Dial pulse setting App 1 3 Tone signal setting App 1 5 PABX mode setting App 1 6 Transfer facility setting App 1 8 1st dial tone and busy tone detection App 1 9 Redial Pause button setting and 2nd dial tone detection Dial tone setting 1 Dial tone setting 2 Protocol definition 1 Protocol definition 2 Busy tone setting Signal detection condition setting Modem setting AUTO ANS facility setting Redial facility setting Function setting 1 Function setting 2 Function setting 3 Transmission speed setting Overseas communications mode setting TAD setting 1 ECM and call waiting caller ID Communications setting TAD setting 2 TAD setting 3 Function setting 4 Function setting 5 App 1 1 Confidential Function Refer to Function setting 6 App 1 33 Function setting 7 App 1 34 Function setting 8 App 1 35 Function setting 9 App 1 36 Function setting 10 App 1 37 Function setting 11 App 1 38 Function set
212. t to lose screws washers or other parts removed e Be sure to apply grease to the gears and applicable positions specified in this chapter e When using soldering irons or other heat generating tools take care not to accidentally damage parts such as wires PCBs and covers e Before handling any PCBs touch a metal portion of the equipment to discharge any static electricity charge on your body or the electronic parts or components may be damaged e When transporting PCBs be sure to wrap them in the correct protective packaging e When connecting or disconnecting cable connectors hold the connector body not the cables If the connector has a lock release the connector lock first to release it e After a repair check not only the repaired portion but also all connectors Also check that other related portions are functioning properly before operational checks e After disconnecting flat cables check that each cable is not damaged at its end or short circuited e When connecting flat cables do not insert them at an angle After insertion check that the cables are not at an angle 3 1 Confidential 2 PACKING 7 Accessory bag a guide S ss DEMO Insertion AC cord m S Option carton SS Line cord SS Printed panel cover Printed panel Fig 3 1 3 2 Confidential SCREW TORQUE LIST
213. taeis cveissnchssansssaulaisneilenis ccbeduisowaese abana 3 48 8 11 15DOCUMENT DRESS COVER sscaissiiitsscisiesssscesessssnsunstbeinnvessiestenshledecnasueceisusbesivin 3 49 DOCUMENT SCANNER UNIT steetaiavis iid sis eacteadanat ths aindateetalausuanivadudeut 3 50 8 12 1 DOCUMENT SCANNER UNIT gocitscsss cxessamscds toaadsedatotissinsuagancdeivtiatsedlatess antiaats 3 50 6422 CORD HOOK oreinen e tert aauccan tata av treat giants daack 3 52 624230 PANEL OINI p EE E E 3 52 542 4 PANEL PCB ASSY onneani ii aen i e A EA E 3 53 8 12 5 RUBBER KEYS L R sccscselsitiotslesisaterstl is hatielaxasctuadip atte ahaa slut hats ead eo 3 53 AO GOD EAE tenses stale alana etka ue 28 ol Siac diet a 3 54 8 12 7 PRINTED PANEL COVER sms ice santiataceace atts tnics ta magna tiner hice nom 3 54 8 12 8 ADDRESS UAB Elis ais atadeien nts cahuia cation cududeatalanioaictascatateretes avdenielntaiae 3 55 PIII ARIE Sitar a anctatctndin tle da a a itv ata 3 56 PULEARM GUIDE antennani ie E isn eda ain a E E E eS nea ess 3 57 NOUPOB eua eunn ee a a a a a a aa 3 58 SPEAKER UNIT ssisatisstriecitsscistabiscno catdssctusaiaccteitchide islalatasdatecaiinn heclelttesbeattaattoditn 3 59 BATTERY AG SY aaaea dia tad welhehi tats abit nin E viata sateen 3 61 SIDE COVER R ASSY Veia eoeta tte baseline van tual acetate dest Be 3 62 REGISTRATION GROUNDING SPRING ccscsscesssseesssssessssessssseessssessssseessseesssseesssseesssees 3 63 ROLLER HOLDER ASSY iaia ah nimsat adit a 3 64 WIRELESS LAN PCB
214. tage correction is performed when a print job occurs after 24 hours default value or later 000100 1 0 The developing bias voltage correction is performed when a print job occurs after 72 hours or later 1111111 1 The developing bias voltage correction is not performed e Selector 1 to 8 Interval of time required for the developing bias voltage correction To keep the density of four colors evenly the developing bias voltage correction is performed when a print job occurs at specified time or later lt WSW56 gt Selector No Function Setting and Specifications PS emulation function setting Not used Not used 0 Invalid 1 Valid Last Job Reprint function 7 0 Invalid 1 Valid setting Not used e Selector 3 Last Job Reprint function setting Setting this selector to 0 makes the machine not to reprint the Last Job Print data such as confidential document in order to prevent the misuse App 1 60 Confidential lt WSW57 gt Selector No Function Setting and Specifications Z o b em OV 5 V Default 10V 15V 20V 25V 30 V Max Caller ID judgment voltage to be distinguished from rings Not used OV 5 V Default 10V 15V 20 V 25 V 30 V Max Caller ID judgment voltage to be distinguished from reverse polarity voltages Not used a D E D a D E O E A a E S E O a S E S A S 0000A 0000 T OO Sk O On T
215. tection App 1 9 WSW0O6 Redial Pause button setting and 2nd dial tone detection App 1 10 WSW07 Dial tone setting 1 App 1 12 WSW08 Dial tone setting 2 App 1 13 WSW0O9 Protocol definition 1 App 1 14 WSW10 Protocol definition 2 App 1 15 WSW11 Busy tone setting App 1 16 WSW12 Signal detection condition setting App 1 17 WSW13 Modem setting App 1 18 WSW14 AUTO ANS facility setting App 1 19 WSW15 REDIAL facility setting App 1 20 WSW16 Function setting 1 App 1 21 WSW17 Function setting 2 App 1 22 WSW18 Function setting 3 App 1 23 WSW19 Transmission speed setting App 1 24 WSW20 Overseas communications mode setting App 1 25 WSW21 TAD setting 1 App 1 26 WSW22 ECM and call waiting caller ID App 1 27 WSW23 Communications setting App 1 28 WSW24 TAD setting 2 App 1 29 WSW25 TAD setting 3 App 1 30 WSW26 Function setting 4 App 1 31 WSW27 Function setting 5 App 1 32 5 8 Confidential WSW No Function Refer to WSW28 Function setting 6 App 1 33 WSW29 Function setting 7 App 1 34 WSW30 Function setting 8 App 1 35 WSW31 Function setting 9 App 1 36 WSW32 Function setting 10 App 1 37 WSW33 Function setting 11 App 1 38 WSW34 Function setting 12 App 1 39 WSW35 Function setting 13 App 1 40 WSW36 Function setting 14 App 1 40 WSW37 Function setting 15 App 1 42 WSW38 V 34 transmission settings App 1 43 WSW39 V 34 transmi
216. ter 4 Drive sub ASSY 2 to 10mm i Drive sub ASSY Serial label Fig 3 74 3 74 Confidential 8 28 FAN MOTOR 60 UNIT COVER SENSOR HARNESS ASSY TONER LED PCB ASSY 8 28 1 FAN MOTOR 60 UNIT 1 Disconnect the Connector from the Toner LED PCB ASSY 2 Remove the Fan motor 60 unit from the Main body Toner LED PCB ASSY Connector Fig 3 75 Assembling Note When assembling the Fan motor 60 unit place it so that the attached Label faces outwards 3 75 Confidential 8 28 2 COVER SENSOR HARNESS ASSY 1 Disconnect the Connector from the Toner LED PCB ASSY 2 Release the Hook to remove the Cover sensor harness ASSY from the Main body Connector Cover sensor harness ASSY lt Right side gt Cover sensor harness ASSY Toner LED PCB ASSY Fig 3 76 CAUTION When removing the Cover sensor harness ASSY remove it as shown in the direction of the allow 2b Be careful not to damage the Hook 3 76 Confidential 8 28 3 TONER LED PCB ASSY 1 Disconnect the three Connectors from the Toner LED PCB ASSY 2 Release the Hook to remove the Toner LED PCB ASSY from the Main body Connector Connector Toner LED PCB ASSY Fig 3 77 3 Release the H
217. terface switching device e Check the descriptions on the software setting in the user s guide e Try resetting the factory settings Step Cause Check Result Remedy Failure inside the Does the machine print Identify the error type and 1 machine Test Pattern Function No then refer to the specified code 09 section of this chapter Machine For Macintosh has the Verify the product ID connection product ID been Product ID verified DCP7030 01EA DCP7040 01E9 DCP7045N 01E8 2 No MFC7320 01EB MFC7340 01E7 MFC7440N 01E6 MFC7450 01EE MFC7840N 01ED MFC7840W 01E5 Main PCB failure Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY PCB ASSY 1 45 Confidential NETWORK PROBLEMS User Check e Check the descriptions in the network user s guide e Try resetting the factory settings Step Cause Check Result Remedy Wireless LAN Is the problem solved Replace the wireless LAN 1 PCB failure after replacing the Yes PCB ASSY MFC7840W wireless LAN PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 2 after replacing the main Yes ASSY PCB ASSY 1 46 Confidential TROUBLESHOOTING OF THE COMMUNICATIONS ERROR lf a communications error occurs the machine 1 Gives an alarm intermittent bleep for approximately four seconds 2 Indicates the appropriate error message on
218. th the allowable FAX receiving speed specified by these selectors Selectors 7 and 8 Comfortable noise level Not used These selectors set the level of noise to be added during playing back of voice signals recorded with no signal compression If they are set to 0 0 no noise will be added App 1 38 Confidential lt WSW34 gt Selector No Function Setting and Specifications Erasing time length of ICM tone recorded preceding the tone detection starting point in the case of automatic line disconnection due to no voice signal received Not used Z o w O 0 0 0 0 sec 1 sec 2 Sec 3 Sec 4 sec 5 sec 6 sec 7 sec No of CNG cycles to be detected when the line is connected via the external telephone in the external TAD mode or via the machine in F T mode Not used 00 nR 0000 0 00a 00 2 00N A A A A Number of DTMF tone signals for inhibiting the detection of CNG during external TAD operation Note Selectors 1 through 5 are applicable to models equipped with built in TADs Not used e Selectors 1 through 3 Erasing time length of ICM tone recorded preceding the tone If the machine has disconnected the line after detection of disconnection tone in ICM detection starting point in the case of automatic line disconnection due to no voice signal received Not used recording it erases tone recorded preceding the
219. the ADF If it is jammed remove it Step Cause Remedy Document rear actuator not some position 1 operating smoothly or catching in Ensure smooth operation and that there is no catching of document rear actuator Confidential E Error code A3 Document Jam Clear the scanner jam then press the Stop Key Document rear sensor is not turned on when feeding the document User Check e Check if the document is jammed in the ADF If it is jammed remove it Step Cause Remedy Document rear actuator not 1 operating smoothly or catching in some position Ensure smooth operation and that there is no catching of document rear actuator Document rear sensor failure Replace the document rear sensor ADF motor failure Replace the ADF motor E Error code A5 Scan Unable A5 Remove the original document Turn the power off then on again Fax scanning error First warning only Step Cause Remedy 1 Scanning failure Turn the power switch off and on Then try scanning again E Error code A6 Scan Unable A6 Remove the original document Turn the power off then on again turning the power off and on Fax scanning error After the A5 error occurs the same problem occurs again even after Step Cause Remedy 1 FB unit fai
220. the LCD 3 Prints the transmission report during fax transmission Definition of error codes on the communications list 1 Calling Code 1 Code 2 Causes 10 08 Wrong number called 11 01 No dial tone detected before start of dialing 11 02 Busy tone detected before dialing 11 03 2nd dial tone not detected 11 05 No loop current detected 11 06 Busy tone detected after dialing or called 11 07 No response from the remote station in sending 11 10 Unobtainable tone detected after dialing 17 07 No response from the calling station in receiving Available in German models only 2 Command reception Code 1 Code 2 Causes 20 01 Unable to detect a flag field 20 02 Carrier was OFF for 200 ms or longer 20 03 Abort detected 1 in succession for 7 bits or more 20 04 Overrun detected 20 05 A frame for 3 seconds or more received 20 06 CRC error in answerback 20 07 Error command received 20 08 Invalid command received 20 09 Command ignored once for document setting or for dumping out at turn around transmission 20 OA T5 time out error 20 OB CRP received 20 OC EOR and NULL received 1 47 Confidential 3 Communication code compatibility checking the NSF and DIS Code 1 Code 2 Causes 32 01 Remote terminal only with V 29 capability in 2400 or 4800 bps tra
221. the cursor is displayed the selector 1 And then the cursor moves to the selector 2 Change the firmware switch in the arbitrary value by this method 4 If enter all selectors press the OK button This operation saves the newly entered selector values onto the EEPROM and readies the machine for accepting a firmware switch number 5 Repeat steps 2 through 4 until the modification for the desired firmware switches is completed 6 Press the Stop Exit button to return the machine to the initial stage of the maintenance mode Note e To cancel this operation and return the machine to the initial stage of the maintenance mode during the above procedure press the Stop Exit button Details of Firmware Switches The details of the firmware switches are described in APPENDIX 1 in which the user accessible selectors of the firmware switches are shaded 5 11 Confidential 2 Printout of Worker Switch Setting Function code 11 lt Function gt The machine prints out the setting items and contents specified by the worker switches lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press the 1 button twice in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button MAINTENANCE 11 appears on the LCD and then press the OK button PRINTING will appear on the LCD 2 The machine prints out the configuration list as shown in the figure below 3 CONFIGURATI
222. the machine lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 7 and 8 buttons in the initial stage of the maintenance mode The indication will appear on the LCD as shown in the figure below DCP7045N 7040 7030 Press the A or W button MAINTENANCE 78 appears on the LCD and then press the OK button Fie Lae Fig 5 12 2 Press the Start button so that the LCD indication is changed in the order shown in the figure above The fan operation is also changed as indicated on the LCD 3 Press the Stop Exit button so that the machine stops checking the fans beeps for one second and returns to the initial stage of the maintenance mode 5 29 Confidential E Location of fans Fan motor 60 unit AW y l EE 14 re ZN lt Right side gt Fig 5 13 Confidential 5 30 1 4 18 Display of the Machine s Log Information Function code 80 lt Function gt The machine may display its log information on the LCD lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 8 and 0 buttons in the initial stage of the maintenance mode The USB serial number appears on the LCD DCP7045N 7040 7030 Press the A or W button MAINTENANCE 80 appears on the LCD and then press the OK button 2 Each time the Start button is pressed one of the following log information items appears on the LCD in the order Th
223. the modem selects higher transmission speed than the possible speed so that it always repeats falling back Selector 8 Detection of CED for stopping CNG If this selector is set to 0 the detection time of CED specified by WSW43 selectors 4 and 5 will apply App 1 43 Confidential lt WSW39 gt Selector No Function Setting and Specifications wo iN jo 2 400 bps 4 800 bps 7 200 bps 9 600 bps 12 000 bps 14 400 bps 16 800 bps 19 200 bps 21 600 bps 24 000 bps 26 400 bps 28 800 bps 31 200 bps 33 600 bps 33 600 bps 33 600 bps First transmission speed choice for fallback s2322 0000222000 0ON 00 00 0000 0N O 00 0 0 0 0 00 Last transmission speed choice for fallback Note WSW339 takes effect only when the V 34 mode is permitted WSW19 selector 7 in models supporting V 34 mode For the transmission speed setting in other modes refer to WSW19 e Selectors 1 through 8 First and last choices of transmission speed for fallback These selectors are used to set the modem speed range With the first transmission speed choice specified by selectors 1 through 4 the machine attempts to establish the transmission link via the modem If the establishment fails the machine automatically steps down to the next highest speed and attempts to establish the transmission link again The machine repeats this sequence while stepping down the transmission spe
224. tieeteneeenaees 3 31 8 9 14 SIDE COVER L ASSY sitiateiattnstistaiclsuatisanteandusieotiuat ia adabainatetaactateen 3 31 592V SIDE COVER SUB b mereces oe e CE A E A AE E i eT 3 32 MAIN SHIECDSCOV ERS PDAT Ee xa warcien rictots cence vsti recta daaliecanta tab aaetnacatie 3 32 PAT WIM cxsette cd ett cs Ai tasted Sha eerste A 3 33 Sait ADE UNIT merei atin an E A anata eta tas nen T 3 33 8 11 2 HINGE R HINGE ARM HINGE ASSY L ou sccsssssesssseesssseesssseesssseessssesssseesssseeeen 3 35 811 3 ADE COVER ASSY aeai e a n tin asda te oars OR stati 3 36 TTA GEAR COVER iiuna o e E T arama heals A tea 3 36 8 11 5 DOCUMENT SEPARATOR ROLLER SHAFT ASSY sccsssssesssssesssssesssseesssseeeen 3 37 8 11 6 UPPER DOCUMENT CHUTE ASSY o essssesssssesssssesssssesssseesssseesssseessstesssssesssseeeen 3 38 8 11 7 LOWER DOCUMENT CHUTE ASSY sccccessssssssssesssssesssssesssssesssseessssesssssessestecss 3 40 8 11 8 ADF SENSOR PCB ASSY nns siisisssseiiisessiiirsssseririsssterrrssssttrnrsssstrnrssseterrrnsseee 3 41 64 6 he ROLLER ASSY iata a t AAAA AENT te 3 43 8 11 10EJECTION ROLLER ASSY amp cccteaiccte scien astetantciei atari doalt ia aetna tet 3 44 8 11 11 DRIVE FRAME ASSY o cescscecssscecssseessssssssseeessssesssssesssssesssetesssetessssesssseesssseesssenen 3 45 6 Ad OAD EIMOT OR iani ENE cnna tatiana hint R AA eee ees 3 46 8 11 13PRESSURE ROLLER ASSY ssicssisctsisteantsraaveluins tacrsisnthaceneisitvcdinstacaoinacienan 3 47 8 11 14DOCUMENT STOPPER cet dadicwi
225. ting 12 App 1 39 Function setting 13 App 1 40 Function setting 14 App 1 40 Function setting 15 App 1 42 V 34 transmission settings App 1 43 V 34 transmission speed App 1 44 V 34 modem settings App 1 45 ON duration of the scanning light source App 1 47 Internet mail settings App 1 48 Function setting 16 App 1 48 Speeding up scanning 1 App 1 49 Speeding up scanning 2 App 1 50 Monitor of power ON OFF state and parallel port kept at high App 1 51 Switching between high and full speed USB App 1 52 USB setup latency App 1 53 End of copying beep and print in black App 1 54 SDAA settings App 1 55 Function setting 17 App 1 56 Function setting 18 App 1 57 Function setting 19 App 1 58 Function setting 20 App 1 59 Function setting 21 App 1 60 Function setting 22 App 1 60 Function setting 23 App 1 61 Function setting 24 App 1 62 Function setting 25 App 1 63 Not used App 1 63 Scanning light intensity to judge to be stable 1 App 1 64 Scanning light intensity to judge to be stable 2 App 1 65 Not used App 1 2 App 1 66 Confidential The functions and settings for each worker switch WSW are descri
226. tion front Check it following the 2 actuator edge procedure described in No actuator failure Operational Check of Sensors Function code 32 in Chapter 5 Registration Is the problem solved Replace the registration 3 solenoid failure after replacing the Yes solenoid registration solenoid Toner sensor PCB Is the problem solved Replace the toner LED 4 failure after replacing the toner Yes PCB sensor PCB High voltage Is the problem solved Replace the High voltage 5 power supply PCB after replacing the High Yes Power supply PCB ASSY failure voltage power supply PCB ASSY Registration Is the registration ground Fit the registration ground 6 ground spring spring fitted correctly No spring correctly loose Refer to Fig 1 3 Main PCB failure Is the problem solved Replace the Main PCB 7 after replacing the Main Yes ASSY PCB ASSY E Paper jam in the back cover and paper eject section Step Cause Check Result Remedy 1 Foreign object Is there a foreign object Yes Remove the foreign around fuser unit around the fuser unit object Paper eject Does the paper eject Replace the paper eject 2 actuator failure actuator move smoothly No actuator Is it damaged 3 Fuser cover ASSY Is the fuser cover ASSY No Fit the fuser cover ASSY loose fitted correctly correctly 4 Outer chute ASSY Is the outer chute ASSY No Fit the outer chute ASSY loose fitted correctly fitted correctly
227. tion levels is shown below Leading edge of document 5 4 3 2 1 Trailing edge of document Fig 5 10 5 24 Confidential BEMAINTENANCE E E E 5 and 4 buttons select SCAN START ADJ 2 seconds later OK button Stop Exit button A or Y button select y A Stop Exit button A button Y button i OK button ACCEPTED Fig 5 11 5 25 Confidential 1 4 14 Acquisition of White Level Data Function code 55 lt Function gt This function allows the machine to obtain white level data for the CIS unit and save it into the EEPROM on the main PCB Note If you replace the FB unit be sure to carry out this procedure lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press the 5 button twice in the initial stage of the maintenance mode DCP7045N 7040 7030 Press the A or W button several times MAINTENANCE 55 appears on the LCD and then press the OK button Press START will appear on the LCD 2 Press the Start button SCANNER AREA SET will appear on the LCD The machine saves the revision data into the EEPROM after a few seconds Then it beeps for one seconds and returns to the initial stage of the maintenance mode 1 4 15 Paper Feeding and Ejecting Test Function code 67 lt Function gt This function allows you to check that a sheet of paper is fed and ejected correctly by printing the grid
228. to models equipped with built in TADs e Selectors 7 and 8 are applicable only to the European versions e Selectors 1 through 6 Compression threshold level for voice signals inputted via the telephone line in the built in TAD operation Not used If voice signals inputted via the telephone line are below the level specified by these selectors the TAD interprets those received voice signals as no signal compressing the recording time e Selector 8 Prompt beep for activity report Not used This selector determines whether or not to beep if the memory area for the activity report becomes full for prompting you to print out the report Printing it out will clear the memory area App 1 34 Confidential lt WSW30 gt Selector No Function Setting and Specifications Z o w 38 0 dBm 39 5 dBm 41 0 dBm 42 5 dBm 44 0 dBm 45 5 dBm 47 0 dBm 48 5 dBm Dial tone busy tone detection level during recording of ICM Not used 0 0 0 0 1 1 1 1 0O0 00NRN o oOo oO0O 0 Not used Drum cleaning alarm i 1 OFF Not used Scanning magnification i adjusting function Not used enable i Risable Density adjustment of the copy for text mode Normal 1 Thickening Note Selectors 1 through 3 are applicable to models equipped with internal TADs Selectors 1 through 3 Dial tone busy tone detection level during recording of ICM Not used
229. ton operative after cordless handset dialing Ap p 1 61 Confidential lt WSW58 gt Selector No Function Setting and Specifications Z o w Invalid 10 20 30 Default 40 50 60 70 Prevention of line interrupt during ICM recording ratio of guard tone response time to call end tone ON time Not used 0 0 0 0 1 1 1 1 0O0 00ND oO oOoO O0 0 Not used Synchronous of DTMF detecting 3 Default Note Selectors 1 through 3 are applicable only to models equipped with built in TADs Selector 8 is applicable only to models equipped with V34 e Selectors 1 through 3 Prevention of line interrupt during ICM recording ratio of guard tone response time to call end tone ON time Not used If an ICM tone is detected as a call end tone by error this machine will release the line even during ICM recording To avoid this problem change the setting for the ratio of guard tone response time to the call end tone ON detection time If the actual percentage of guard tone response time is greater than the percentage set by selectors 1 through 3 this machine will judge that the call end tone has not yet been detected and will continue ICM recording App 1 62 Confidential lt WSW59 gt Selector No Function Setting and Specifications 0 USB serial number transmitted USB serial number not transmitted 1 Frame length selection USB serial num
230. tone detection starting point for the time length set by these selectors Selectors 4 and 5 No of CNG cycles to be detected when the line is connected via the external telephone in the external TAD mode or via the machine in F T mode Not used The machine interprets a CNG as an effective signal if it detects a CNG signal by the number of cycles specified by these selectors when the line is connected via the external telephone in the external TAD mode or via the machine in F T mode during external TAD operation Selectors 6 and 7 Number of DTMF tone signals for inhibiting the detection of CNG If the machine receives this specified number of DTMF tone signals during external TAD operation it will not detect CNG afterwards If these selectors are set to 1 1 the CNG detection will not be inhibited App 1 39 Confidential lt WSW35 gt Selector No Function Setting and Specifications No 1 2 3 4 1 0 0 0 0 No detection Max detection period of dial 0 0 O 1 1 sec l tone busy tone during recording O O 1 0 2sec 4 of ICM Not used O 1 0 0 4sec l 1 1 1 1 15 sec 5 Not used 8 Note Selectors 1 through 4 are applicable to models equipped with internal TADs e Selectors 1 through 4 Max detection period of dial tone busy tone during recording of ICM Not used If the machine called station detects dial tone or busy tone exceeding the detection level specified by selectors 1 through 3 on WSW
231. uld be accessed by service personnel only However you can allow end users to access some of these under the guidance of service personnel by phone The end user accessible functions are shaded in the table given on the next page codes 06 09 10 11 12 25 45 52 53 54 80 82 87 and 91 Function code 10 accesses the worker switches each of which has eight selectors You should not allow end users to access all of those selectors but you can allow them to access user accessible selectors which are shaded in the worker switch tables in Appendix 1 The service personnel should instruct the end users to follow the procedure given below 1 Press in the following order the Menu Start Menu and A button The MAINTENANCE 06 appears on the LCD 2 To access any other function code call up the desired code using the A and Ww buttons or numerical buttons Then press the OK button To switch the machine back to the standby state press the Stop Exit button When each of the user accessible functions is completed the machine automatically returns to the standby state 5 1 Confidential List of Maintenance mode Functions Function Code Function Refer to 01 EEPROM Parameter Initialization 1 4 1 5 3 05 Printout of Scanning Compensation Data 1 4 2 5 4 06 Placement of CIS Unit Position for Transportation 1 4 3 5 6 08 ADF Performance Test 1 4 4 5 6 09 Test
232. ve the CIS unit in position for transportation or if this function is performed while a scanning error is occurring the SCAN LOCK ERROR appears on the LCD ADF Performance Test Function code 08 lt Function gt The machine counts the documents fed by the automatic document feeder ADF and displays the count on the LCD for checking of the ADF performance lt Operating Procedure gt 1 Set documents Allowable up to the ADF capacity The DOC READY will appear on the LCD 2 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 0 and 8 buttons DCP7045N 7040 7030 Press the A or W button MAINTENANCE 08 appears on the LCD and then press the OK button While counting the documents the machine feeds them in and out displaying the current count on the LCD as shown below ADF CHECK P 01 C Current count 1st page in this example 3 Press the Stop Exit button so that the machine beeps for one second and returns to the initial stage of the maintenance mode 5 6 Confidential 1 4 5 Test Pattern Function code 09 lt Function gt This function prints out a test pattern Print Quality Check sheet to allow the service personnel to check the print quality When there is problem in the print quality this function use to carve up whether there is the cause in the recording side or the reading side lt Operating Procedure gt 1 MFC7840W 7840N 7450 7440N 7340 7320 Press in order the 0 and 9 buttons in t
233. vel Not used These selectors set the no tone detection level in the external TAD mode Selectors 5 through 7 Pause between paging number and PIN These selectors set the pause time between a telephone number being paged and PIN personal identification number for the paging feature App 1 30 Confidential lt WSW26 gt Selector No Function Setting and Specifications Not used Dialing during document reading into the temporary memory in in Disable 1 Enable memory message transmission The number of times changes by the selector 3 of the WSW54 Refer to WSW54 Selector 3 No of CNG cycles to be detected when the line is connected via the external telephone except in the external TAD mode or via the built in telephone No of CNG cycles to be detected when the line is connected via the external telephone in the external TAD mode via the built in telephone in the TAD mode or via the machine in the automatic reception of the F T mode Not used Selector 3 Dialing during document reading into the temporary memory in in memory message transmission If this selector is set to 0 the machine waits for document reading into the memory to complete and then starts dialing This enables the machine to list the total number of pages in the header of the facsimile message Selectors 4 and 5 No of CNG cycles to be detected when the line is connected via the external telephone ex
234. ver e Replace the drum unit with a new one Step Cause Check Result Remedy Dirt on cleaner Are the electrodes of the Clean both electrodes 1 electrode drum unit and machine Yes Refer to Fig 1 1 Fig 1 2 body dirty HVPS PCB Is the problem solved Replace the HVPS PCB 2 failure after replacing the Yes ASSY HVPS PCB ASSY E Fogging User Check e Replace the toner cartridge with a new one T S e Replace the drum unit with a new one Do not use acid paper e Check if there is dust or paper powder in the machine Step Cause Check Result Remedy Toner sensor Is the toner sensor Replace the toner sensor failure Machine performed normally by PCB ASSY 1 body following the procedure No in Maintenance mode 32 Chapter 5 HVPS PCB Is the problem solved Replace the HVPS PCB 2 failure after replacing the Yes ASSY HVPS PCB ASSY Main PCB failure Is the problem solved Replace the main PCB 3 after replacing the main Yes ASSY PCB ASSY CAUTION This problem often occurs when the drum unit or toner cartridge is nearly at the end of life 1 42 Confidential 6 1 6 2 TROUBLESHOOTING OF SCANNIG Cannot scan the document in the FB unit If scan the document it is completely white or black User Check e Check if there is the scanning surface of the FB unit scanning document in the lower side Step Cause Check Result R

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