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reworked Service Manual SL1

1. ACOUT CHVOUT Fig 4 38 lobi PAE Paper Eat Gen ETE DDO EA HTEAH u m Hester Fa P A e LFU J omer Feed Unit b E me Toner Bnphrrt mL GO HIT een riim a LL FL wl anior Rit enor TR i3 itor dam cen ij In Of Genter ae titat ok 18 1 phr Eeli Gentd PES H 8 EEG eared A LOHP rpt EU H Eer _ n wWe Cleanin Hoo Paper Wifft2T HEER wt e Feller amp ensaE FEL re Ele Benti HGH YOLTAGE UNIT DCH hr Fackry Uie io To Rear herdo EM kf n3 xfut T Top enh mth Control Fan CTEHE Rib uL aer t afst Developer MW M Wisin Eoknolde ketr E K Motor De elope oe lopa Pa TS cu Cui uw Cleaner FEE T E ak Cut h 5 52 3 IOD2 PF W B u sy lele Tp P al F Rifas i Deeper E PRU EST RIL ML EE 3 Sra thie T 1 u 4 PANEL FWE Meret tS rane ee CUE h rv E Trek esten raf fF EHHH F Feglttailon ATA re heh Seek ODI Dc 3 amp 12 w F ai ji E pagr in AEL w t JD 3 ir ra WL M Ea d POWER SUPPLY UNIT rb imm d mea PRY PET mA e Week Home Home Deuwbperpeveloper Tener Athen Peden Solem coknold Bemor amp ensor Eensor AC LETI K RU Mt at wuchs EDCN2 FIOD1 ug ges M d2 9 C82s FIOD1 P W B Power SupplG2Emnnds 5v 1 SGND 5v 1 SGND ACSYNC N SGND 24V 8 SGND
2. FU CHECK LP TUNE UP THV TUNE UP DBV TUNE UP FBV TUNE UP REG TUNE UP VDO TUNE UP Table 6 1 Configuration of Operational Mode 6 3 Code No Message in LCD Description of Message 00 00 READY 1 U q 2 L q 3Ir4 READY LED is lit Engine has completed the warming up process and now is ready to print Engine is ready to receive PRREQ TPREQ signal from LPC 1 Applicable paper feeder is indicated as follows UPP Upper Cassette LOW Lower Cassette 2 and 3 Size of the paper loaded on the upper or lower cassette is indicated as follows LT Letter size DL Envelope EX Executive size PC Post Card LG Legal size CM Envelope Commercial 10 A4 A4 size FR Free size B5 B5 size UK UK Quarto FO OHP 4 Code numbers of the consumables or periodical replacement parts will be indicated if they reach to their life or should be replaced now If no periodical replacement is required there will be no indication in the LCD For details of the periodical replacement parts see the item6 1 4 36 CLEAR CARE 01 01 WAIT 1 U mq 2 L q 3Ir4 Message LED is lit Engine is in the process of warming up For 1 2 3 and 4 appearing in the LCD see the description of code number 00 above 6 4 Code No Message in LCD Description of Message 02 02 PRINT
3. Olyai ini a al lwli lole lol NIA AJ wN ELFU R 1 N LFU Connector OHPL Z o M i h M p 24v 1 LSE PKCLLON OHPSENL 5v 1 SGND PEL P OCST N SGND SGND ov teh OHPSENL SGND OCST e G co J ojO 5 0 N P lIOJj 09 jo o O sa wid M 24v 1 NC PKCLLON N 4 62 5 Periodic Maintenance Bg GeNeldl 22 55 895447 A554 0 24S EO dd hei mde 5 1 5 1 Precaution In Hangligj u assi ss ento mech be ek Ce Ee rine 5 1 1 List of maintenance tools issus wes gum RR Pe eae dees 5 2 2 List of consumables for maintenance 5 3 5 1 2 Cleaning for periodic maintenance Lssss 5 4 5 1 3 Periodic maintenance parts and maintenance cycle 5 13 5 2 Periodic Maintenance Procedures 20 0000 5 15 5 2 1 Replacement of Belt Cartridge 2 2 0005 5 15 5 2 2 Replacement of Fuser Unit i224 esr RR RR en 5 17 5 2 3 Replacement of Transfer Roller 0 0000 e eee 5 20 5 2 4 Replacement of Paper Discharger Unit 5 22 5 2 5 Replacement of Drum Cleaner lille 5 24 5 2 6 Replacement of Ozone Filter 55 2 oro RR 5 26 5 2 7 Checking of Paper Feeding Roller and Separator Pad 5 27 5 2 8 Replacement of Transfer Drum 25 2 RR 5 28 5 Periodic Maintenance 5 1 General 5
4. Fig 7 52 7 66 7 6 4 Paper Feed Roller Separator Pad Tools D Phillips Screwdriver 1 Disassembly Procedures D Remove the paper feeding cassette 2 Remove the transfer unit See the item 7 6 1 Remove the set screw ST3X 6 2 pcs of paper guide L 4 Remove the paper guide L Remove the set screw ST3X 6 2 pcs of paper guide UL Remove the paper guide UL 7 Disconnect all the harness connectors connected with the OHP sensor and paper sensor Sliding the paper feeding roller to the right side remove it from the shaft 9 Pull up and remove the separator pad Assembly Procedures D Install a new separator pad 2 Install a new paper feed roller S After the above follow exactly the reverse order of disassembling procedures Precautions Do not touch the surface of paper feed roller and separator pad 7 67 Paper Feed Roller Fixing Metal Separator Pad oc o S 2 9 D Q G a Transfer Unit UL Paper Guide Paper Guide Fig 7 53 7 68 7 6 5 Front Cover Unit Necessary Tools D Phillips Screwdriver 1 2 Disassembly Procedures CD Remove the side cover L See the item 7 1 2 2 Remove the base cover L See the item 7 1 10 3 Open the front cover unit 4 Remove the set screws BT4 x 8 2 pcs of fro
5. Tools D Phillips Screwdriver 2 Disassembly Procedures D Remove the belt cartridge 2 Remove the toner cartridge S Remove the drum cleaner Remove the side cover LU See the item 7 1 1 Remove the top cover See the item 7 1 4 Remove the control fan assembly See the item 7 3 5 D Remove the set screw ST3X6 2 pcs of stay A 8 Disconnect the connector connected with the belt sensor 9 Pull up the stay A assembly along the guide Assembly Procedures D Install the new stay A assembly 2 After the above follow exactly the reverse order of disassembling procedures Precautions D Do not touch or scratch the transfer drum 2 Do not deform the sealing mylar of waste toner feeder D 7 75 gt n QD lt lt gt n n Fig 7 57 7 76 7 6 9 Fuser Connector Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the fuser unit 2 Remove the side cover L See the item 7 1 2 S Remove the shield case A assembly See the item 7 2 5 Remove the PN PH connector connected with the DC power supply unit Remove the set screw SP3X 8 2 pcs of fuser N lii connector Remove the fuser connector Set screw of fuser connector is unique Fuser Connector Fram Ass y Assembly Procedures D Insta
6. D Remove the side cover R See the item 7 1 3 2 Lift up the bottle holder Remove the waste toner sensor by removing the hooked pawl Disconnect all the connectors connected with the waste toner sensor Assembly Procedures D Install a new waste toner sensor 2 Connect the connectors with the waste toner sensor 9 After the above follow exactly the reverse order of disassembling procedures Precautions 7 59 Fram Ass y Bottle Holder B AX A CLL Waste Toner Sensor 7 5 11 Toner Sensor Assembly TPD TTR Tools D Phillips Screwdriver 1 2 Disassembly Procedures TPD D Remove the side cover R See the item 7 1 3 2 Remove the developer drive unit See the item 7 3 2 S Remove the set screw ST3X6 3 pcs of toner sensor P W B 4 Disconnect all the connectors connected with the toner sensor P W B TTR D Remove the side cover L See the item 7 1 2 Z Remove the high voltage unit HVU See the item 7 2 6 S Remove the DC power supply unit LVPS See the item 7 2 5 amp Remove the set screw ST3X6 3 pcs of toner sensor P W B Remove the toner sensor P W B Toner Sensor TTR u Toner Sensor TPD Fig7 49 7 60 Assembly Procedures TPD D Connect the connectors with a new toner sensor P W B 2 Install t
7. Unplug the power supply cord U from the inlet Suec c9 iii Precaution while power on amp off operation N PRECAUTION Prior to unplugging the power supply cord confirm that the main switch located on the side panel of printer is set to the Push Off Strictly refrain from powering off or unplugging while the printer is performing the printing operation When resetting the power on make sure to wait at least 5 seconds after powering off 3 9 2 Test Print After power on confirm the normal printing by test printing according to the following procedures i Procedure of Test Print See Item ii Test Print Procedures for details Step Operation Details of Operation Upon completion of the warming up process 1 Power On printer is ready to print and waits for PRINT signal See the power on in Section 4 1 1 Printer has the following built in print patterns for test printing 1 Grid Pattern Available in mono color print of Y M C K and two color print of R G B GRID 2 Test Print 2 Stripe Pattern Available in color print of Y M C K R G B STRIPE 3 10 ii Test Print Procedures Implement the test print according to the following procedures upon completion of the warming up process Procedure D Warming up process is completed 2 Press ONLINE key so that display changes from screen a to b Press SELECT key
8. 5v 1R 10 ACOFF P HON N 2 TESTI2 24 14 TESTO2 24 16 TESTI1 24 18 TESTO1 PGND O PGND PGND EDCN14 FIOD1 e M 2 PGND 8s 2 1k FIOD1 P W B High Voltad amp d amp Fimht No 24v 1 2 PG FUCHK PGND ACVON N PWMO CHVON N 8 CHVE CBVPWM N 10 THVRON N DBV4C PWM IN 12 THVPWM N DB KY PWM N 14 THV I FCBVPWM N 18 TH1 NC T TH2 EDCN3 F H C POP FFor Factory Us amp PGmby M TESTO1 TESTI1 TESTO2 TESTI1 EDCNA FIOD1 hAXCb FIOD1 Interlock Switch M REARDOPEN P N C TOPDOPEN P 4 56 5 EDCN1 FMCTL IOD1 FMCTL P W B 60s2 d IOD1 P W5OPins No PGND PGND 6 24v 1 8 HON N 10 SGND 12 ACOFF P 14 5v 1R 24v RHSON AHUMB ACVON CHVON PWMON CBVPWM DHW PWM N D amp Y PWM N FCBVPWM N THVRON N THVPWM N THV I TH2 THI OILLES P TMASEN1 EDCN9 FIOD1 FIOD1 P W B M IODA N FBCLON P FBSLON P TRSLON P OZFANERR 24v 24v 24v PGND PGND PGND 5v 1 SGND PHSON P AHUMB TMASEN2
9. Assembly Procedures D Install a new drum encoder sensor to the sensor holder 2 Connect the connectors with the encoder sensor S Install the sensor holder assembly to the frame L Remove the high voltage unit assembly from the frame L Remove the encoder sensor from Sensor Holder Ass y Transfer Drum Drum Encoder Sensor EN Sensor 4 After the above follow exactly the reverse order of disassembling procedures Precautions 7 57 7 5 9 Belt Sensor PBS Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the toner cartridge 2 Remove the belt cartridge 3 Remove the drum cleaner 4 Remove the top cover See the item 7 1 4 Remove the control fan assembly See the item 7 3 4 Remove the set screw ST3 X6 2 pcs of the stay A Pull up the stay A Disconnect all the connectors connected with the belt sensor Remove the belt sensor from the stay A Assembly Procedures D Install a new belt sensor to the stay A 2 Connect the connectors with the belt sensor S9 After the above follow exactly the reverse order of disassembling procedures Precautions 7 58 7 5 10 Waste Toner Sensor WTS Tools D Phillips Screwdriver 1 2 Disassembly Procedures
10. Table 5 3 2 2 Cleaning Work Cleaning Cycle 1 Time 2 Skill 3 No Name of Parts _ s Description Page Condition or Case minute Level 1 Remove toner cartridge i e Defective print Dustproof 2 Remove the belt cartridge quality p 5 Glassof 3 Remove the dust proof glass 5 11 3 B or C Optical Unit Parodie 4 Using a dry cloth and applicator clean maintenance the stain of dust proof glass 1 Remove toner cartridge and belt Defective print Printer cartridge quality 6 Interior 5 12 5 Bor C Unit 2 Clean printer s base using the handy Periodic cleaner and dry cloth maintenance Note 1 If periodic maintenance agreement has been made checking will be made at every periodic maintenance service for preventing any trouble from occurring 2 Normal time for replacement of above parts 3 Technical level required for replacement work A Beginner B Experienced C Expert 1 Cleaning of Registration Roller Registration Roller shall be cleaned according to the periodic maintenance cleaning cycle set out in Table 5 3 Tools to be prepared D Cotton cloth Unwoven fabric 2 3 pieces Cleaning Procedures T Turn off the power supply and unplug the power supply cord 2 Open the transfer unit 9 Using a cotton cloth clean the registration roller incorporated in the transfer unit N CAUTION Strictly refrain from using alcohol or simil
11. S Remove the base cover L from the base i Pull and remove the front side ii Pull and remove the rear side Assembly Procedures Base Cover L Prepare a new base cover L Fig 7 10 2 Assemble the new base cover L according to the reverse order of disassembling i Insert the front side of base cover L ii Insert the rear side of base cover L Precautions When assembling the base cover insert the leading edge of base cover L into the hook provided at the bottom left and right of the base plate e Have the projecting part of base cover L meet the hole of base plate bottom Base Plate Hole Projecting Part E Base Cover L 7 1 11 Cleaner Cover Tools No tool is required Disassembly Procedures D Open the paper exit cover Gieanene eves 2 Holding the ears remove the cleaner cover Assembly Procedures D Install a new cleaner cover 2 Close the paper exit cover Precautions Fig 7 11 7 14 7 2 Replacement of Printed Wire Board P W B Layout of Printed wire Board 7 2 7 7 2 6 High Voltage Power Supply HVU P W DC Power Supp LVPS P W B 7 15 7 2 1 MCTL P W B Tools D Phillips Screwdriver 1 2 Disassembly Procedures CD Remove the side cover L See the item 7 1 2 2 Remove the t
12. Is DCN5 of IOD1 properly connected with a connector of drum HP sensor Connect them properly Check the voltage 5V 1 Is the voltage 5V between DCN5 1 and 3 YES Is the voltage 5V between DCN2 1 and 2 NO Replace a low voltage power supply LVPS NO Is E3 error cleared YES Job is complete Re install or replace the belt cartridge Is an encoder plate deformed as Is a rotation torque excessive Replace the transfer drum Is E3 error cleared YES Replace the MCTL P W B MCTL Drum PH Sensor EN Lc8 Toner Sensor P W B LED side Confirm the connection of a toner sensor P W B LED side connector O W B Is DCN of IOD1 properly connected with a connector of the toner sensor Connect them properly YES Nose Check the voltage LEDON N P Is E4 error cleared me fe N Is a signal voltage between DCN7 7 and 9 to be a rising edge 24V Replace the toner sensor P W B Is a signal voltage between DCN1 29 and 1 to be a trailing edge Replace the IOD1 P W B i YES Is E4 error cleared YES Replace the MCTL P W B Job is complete IOD1 7 1 1 8 LEDON N 5g Job is complete Toner Sensor P W B oo 8 Concerned Part Transfer Solenoid Confirm the connection of a transfer solenoid connector YES N Is ECN8 of IOD2 properly connected with a connector of the solenoid 2 Is ECN2 of IOD2 properly connected with DCN9 of IO
13. M Paper is transported as synchronizing with the transfer drum Transfer roller operates as synchronizing with the transported paper and contacts with the transfer drum through the transported paper Transported paper passes between the transfer roller and transfer drum In this instance the positive high voltage THV is injected to the transfer roller Negatively charged toner is moved to the positively charged paper Transported paper with the toner transferred is transported to the paper discharging process OS WO 4 19 Paper Discharger Transfer Roller d VAC Power Supply for Paper THV VAC Paper dischargeing i THV Power Supply for Transfer Roller Bias 4 20 Paper Discharging Paper Discharging Process means that the transported paper on which the transfer has been completed is separated from the transfer drum by applying AC charge to the paper 1 Structure of Paper Discharge Fig 4 21 CD AC charger unit for discharge of paper is located as shown in Fig 4 7 2 AC charger unit consists of the case and charger wire S High alternate voltage VAC is injected to AC charger unit 2 Process of Paper Discharge Fig 4 21 D Paper has been adhered to the transfer drum in the transfer process 2 Paper is neutralized discharged in terms of the electrical charge by injecting to the paper the alternate voltage generated by the discharger 9 Paper is separa
14. RATING 220 240V 50 60Hz 44 taga cho 1 chom Ibarakiken MADE IN JAPAR 2 2 General Specification No Item Description Printing Method Semiconductor Laser and Electrophotography Print Speed a Monochrome b 2 two Color C 3 three Color d 4 four Color Cassette Feed and Continuous Print a 16 sheets per minutes Letter size b 8 sheets per minutes Letter size C 5 8 sheets per minutes Letter size d 4 sheets per minutes Letter size Warming Up Time 210 seconds max 180 seconds Normal Resolution 600dpi Feeding Method Cassette Feed Cassette Capacity Ordinary Paper 250 sheets OHP 50 sheets Envelope 30 envelopes Post Card 50 cards Printable Media Letter Legal Executive A4 B5 OHP Label SPHINX Paper Exit System Face Down 250 sheets capacity External Dimension 500 W x 490 D X 388 H unit mm 19 7 W x 19 3 D X 15 3 H unit inch 10 Weight of Printer Approximately 36kg 79 pounds 2 2 Table 2 1 Characteristics of Hitachi Paper Item Description Basis Weight g m 8215 Thickness u m 95 6 Smoothness Bekk 90 20 seconds Stiffness Clark 100115 Brightness 96 85 2 Surface Resistance Q 10 10 Grain Direction Long Measurement Condition 17 5 27 0 C 50 70 RH Note Keep the paper sealed and do not open
15. Remove the set screws ST3 X 6 1 pc and F3 X 6 1 pc of fan case assembly Remove the fan motor from the fan case assembly cQ o o e qe BW Assembly Procedures D Install a new fan motor to the fan case 2 Install the fan duct assembly to the main bogy 3 After the above follow exactly the reverse order of disassembling procedures 4 Upon completion of the installation connect the power supply cable Turn the power supply switch ON Execute the test print in Service Mode D Confirm the operation and print quality Precautions Interlock Switch Top Controller Fan Fig 7 25 a Fan Case Fan Motor Fig 7 25 b D When installing the fan motor make sure that rating label of fan motor faces the exhaust side 7 33 7 3 5 Fuser Fan FUFAN Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the side cover LU Paper Exit Harness Cover Paper Exit Unit See the item 7 1 1 Remove the side cover L See the item 7 1 2 Remove the shield case A assembly p See the item 7 2 5 Remove the paper exit unit See the item 7 1 5 Remove the paper exit harness cover Disconnect the harness connector of fuser fan D Remove the fan case assembly from Fuser Fan Ass y the paper exit guide assembly 9 Remove the fan motor from the fan case assembly i Opening the paper exit c
16. 02 PRINT M Printer under printing process 8 3 6 In case that the operator call is not cleared Normally the operator call can be cleared by the implementation of applicable countermeasures listed in Table 8 1 If not cleared the printer engine may be in trouble Check and implement appropriate countermeasures in accordance with the following procedures 8 3 a Message NO MEDIA UPP LOW is indicated again Confirm the action of Paper Sensor PE Yes Install the Sensor properly 5 Is Sensor Lever damaged or Sensor undone Check the Paper Guide UR No Yes Is Connector of Paper Sensor is disconnected No Is the connection between Paper Sensor NY and IOD1 is disconnected No Replace Paper Sensor PE Yes Is Error Code 11 cleared No Replace IOD1 P W B Is Error Code 11 cleared Yes Message NO TRAY UPP LOW is indicated again Check Paper Cassette Yes Is Paper Size Sensor Lever damaged Replace the Paper Cassette No Check Paper Size Sensor PSU Yes Is PSU properly installed damaged Replace the PSU No Yes Is connector of Paper Size Sensor disconnected Connect the connector No Yes Is the connection between Paper Size Sensor and IOD1 is disconnected No Replace Paper Size Sensor PSU Is Error Code 12 cleared No Replace IOD1 P W B Is Error Code 12 cleared Yes Message REPLACE TONER is indicated again Confirm
17. 1 Wipe off the oil adhering to the transfer unit and its perimeter 2 Replace the transfer drum with a new drum See Section 7 6 2 3 If the oil adhesion is excessive replace the belt cartridge cleaning brush and toner cartridge with a new cartridge and brush See Section 5 2 1 or 5 2 5 8 45 No 9 Black Line Phenomenon Fine black line appears in the printed image as shown in the print sample of upper right corner Main Causes 1 Wire grid of the charger unit is smeared 2 OPC belt s surface is damaged 3 Foreign particles paper dust etc are stuck in between the cleaning blade and OPC belt 4 Debris adhering to the base of toner cartridge s developer roller contacts to OPC belt OPC Belt Cartridge Developer Roller OPC Belt Cartridge Cleaning Belt Foreign Particles Countermeasures 1 Remove the belt cartridge 1 1 Clean the charger unit See Section 5 1 2 4 1 2 Replace the belt cartridge to a new cartridge See Section 5 2 1 2 Remove foreign particles adhering to the surface of developer roller 8 46 No 10 Vertical Line my Phenomenon Vertical line appears in the printed image as shown in the print sample of upper right corner Main Causes 1 Foreign particles dust etc adhere to the parts located around the transfer drum and consequently contact the toner image on the transfer drum 4 D
18. 7 8 7 1 6 Rear Cover L Transfer Unit Cover Tools D Phillips Screwdriver 1 2 Disassembly Procedures CD Open the transfer unit 2 Remove the set screw ST3X 6 1 pc of transfer unit and fixing Metal 3 Remove the transfer unit Remove the set screw BT3X10 4 pcs of rear cover S Remove the rear cover L from the transfer unit Assembly Procedures TJ Prepare a new rear cover L 2 Install the rear cover to the transfer unit S Assemble according to the reverse order of disassembling Precautions Transfer Unit Rear Cover L 8 Ta Fixing Metal 7 9 7 1 7 Rear Cover U Tools D Phillips Screwdriver 2 Disassembly Procedures CD Open the transfer unit 2 Unplug the power supply cable from the inlet 9 Remove the rear cover See the item 7 1 8 4 Remove the side cover R See the item 7 1 2 Remove the set screw BT4 X 6 1 pc of rear cover U 8 Remove the rear cover U Assembly Procedures D Assemble the rear cover U according to the reverse sequence of disassembling Rear Cover U Precautions Side Cover R Fig 7 7 7 10 7 1 8 Rear Cover Tools 1 Phillips Screwdriver 2 Disassembly Procedures D Unplug the power cable from the inlet 2 Remove the set screw BT4X 8 1 pc of rear
19. Shield Cover A Controll Fan Ass y Shield Cover L Shield Case A Ass y Top Cover M M Base Cover L Fig 7 18 7 23 7 2 6 High Voltage Unit Tools D Phillips Screwdriver 1 2 Disassembly Procedures CD Remove the side cover LU See the item 7 1 1 2 Remove the side cover L See the item 7 1 2 Remove the shield cover upper See the item 7 2 1 4 Remove the shield cover A See the item 7 2 1 Remove the shield cover B See the item 7 2 1 Disconnect all the harness connectors 5 pcs connected to the MCTL P W B D Remove the set screw ST3X 6 2 pcs of fun assembly See the item 7 3 4 8 Remove I F P W B guide rail upper Remove the set screw ST3x 6 bpcs of shield case A assembly 10 Remove the set screw ST4X10 2 pcs of base cover R O Remove the base cover R 12 Remove the fan duct of power supply 9 Disconnect all the harness connectors 5 pcs connected to the high voltage unit amp Remove the set screw ST3X6 1 pc and BT3X 8 6 pcs of high voltage unit 1 Remove the high voltage unit Assembly Procedures D Install a new hight voltage unit When installing have a lower hole of the hight voltage P W B meet a projection g4 of the base i When installing put each electrode terminal through the holes of P W B from the back ii Having the set holes for th
20. oO KI Fig 4 8 a Basic Structure of Print System OPC I Fig 4 8 b 4 10 F Charging Process F Exposing Process F Developing Process F Transfering Process F Cleaning Erase F Power Supply for OPC Belt Bias F Power Supply for Charging F Power Supply for Dev Roller Bias IVRH FRemain voltage on the OPC Belt II Details of Each Process 1 Charging Charging Process means that OPC belt is evenly charged by the charger 1 Structure of Charger Unit Fig 4 7 and Fig 4 9 D Charger unit is located as shown in Fig 4 7 2 Charger unit consists of the case corona wire and grid 3 Charger unit charges the OPC belt surface to the potential Vo V with the corona charge a Charger unit has the grid controllable to the constant voltage ZD V for even charging 2 Process of Charging Fig 4 10 CD Status of OPC belt surface before charging is CBV V 2 Charger unit charges evenly the OPC belt surface till Vo V by generating negative charge Grid Corona Wire alana ans I dL IS e I eoe rri l e Cleaning Blade Charging Fig 4 9 Fig 4 10 4 11 Exposing Exposing Process means that OPC belt surface is exposed to the laser beam to form an electrostatic latent image 1 Structure of Optical Unit D Optical unit is located as shown in Fig 4 7 2 Luminous source of laser beam is a semiconductor laser 3 Scanning is made to
21. 2 2 Slotted Screwdriver 1 Disassembly Procedures D Remove the side cover R See the item 7 1 3 Remove the connector of cleaner clutch from IOD2 P W B S Remove the C ring from the shaft 4 Pull out the cleaner clutch from the shaft Fig 7 32 Assembly Procedures D Install a new cleaner clutch to the shaft 2 Install the C ring to the shaft s groove and fix the cleaner clutch S After the above follow exactly the reverse order of disassembling procedures Precautions 7 40 7 4 5 Developer Clutch K Y M C Tools D Phillips Screwdriver 1 2 2 Slotted Screwdriver 1 Disassembly Procedures D Remove the side cover R See the item 7 1 3 2 Remove IOD2 P W B base See the item 7 2 3 S Remove the C ring of subject developer clutch from the shaft Pull out the subject developer clutch from the shaft Assembly Procedures D Install a new developer clutch to the shaft 2 Install the C ring to the shaft s groove and fix the developer clutch S After the above follow exactly the reverse order of disassembling procedures 4 Upon completion of the installation connect the power supply cable Precautions Fuser Clutch Cleaner Clutch Registration Clutch Developer Clutch IOD2 P W B 7 41 7 4 6 Transfer Solenoid TRSOL Tool
22. 3 DCL Y ON P r 8 Error Code D2 Developer Clutch DCLM Confirm the connection of Connector Is the connection proper between ECN16 of IOD2 and Clutch DCLM Is the harness of Clutch DCLM broken YES Check the voltage at DCLM ON N Does the voltage drop q amp f between ECN16 3 and ECN2 8 NO Does the voltage jump _ between ECN1 2 and ECN2 12 NO Replace current MCTL P W B with a new P W B Is D2 Error cleared YES Complete NO YES YES Connect the harness Connect the connector properly Is D2 Error cleared NO Replace the clutch DCLM with a new clutch Replace IOD2 P W B with a new IOD2 P W B Is D2 Error cleared NO MCTL IOD2 YES YES Developer Clutch DCLC Confirm the connection of Connector Is the connection proper between ECN14 of IOD2 and Clutch DCLC Connect the harness Is the harness of Clutch DCLC broken Connect the connector properly YES Is D3 Error cleared Complete NO Check the voltage at DCLC ON N Does the voltage drop q amp 1 between ECN14 3 and ECN2 8 Y ES e Replace the clutch DCLC with a new clutch F Does the voltage jump _ between ECN1 3 and ECN2 12 Replace IOD2 P W B with a new IOD2 P W B YES Is D3 Error cleared Complete NO Replace current MCTL P W B with a new P W B Is D3 Error cleared YES Complete MCTL IOD2 Developer Clutch
23. Cyan K Black Replace the indicated toner cartridge with a new toner cartridge of subject color 14 1 CHECK FUSER OIL Engine is idling Message LED is lit 14 CHECK Replace the fuser oil bottle with a new bottle FUSER OIL This message will be automatically cleared FO by open amp close operation of the paper exit cover 14 2 Engine is idling 14 CHK CLEANING e Message LED is lit ROLLER 4 Replace the cleaning roller with a new roller FC Execute the Clear Care Mode after the replacement of the cleaning roller to clear the Care Code FC TONER PACK Message LED is lit Replace the waste toner pack with a new 14 CHECK pack This message will be automatically cleared TONER PACK 4 by open amp close operation of the paper exit cover taking place while replacement of the waste toner pack The message is cleared also by pressing the Clear Key 15 MISPRINT Engine is idling 15 MISPRINT 6 4 Message LED is lit 6 Kind of the misprint will be indicated as follows NOPQR No PRREQ N signal is a vailable PAPER No paper is available in the feeder while executing the print operation after receipt of the print command This message can be cleared by pressing the Clear Key 6 6 Code No Message in LCD Description of Message 16 1 16 ALIGN FU UNIT 4 Engine is standstill Message LED is lit e Fuser unit is not installed R
24. DCLK Confirm the connection of Connector Is the connection proper between ECN13 of IOD2 and Clutch DCLK Is the harness of Clutch DCLK broken YES Connect the harness Connect the connector properly Is D4 Error cleared Me Complete NO Check the voltage at DCLK ON N E Does the voltage drop q_ 747 between ECN13 3 and ECN2 8 ue Replace the clutch DCLK with a new clutch Qe Does the voltage jump amp between ECN1 4 and ECN2 12 Replace IOD2 P W B with a new IOD2 P W B Is D4 Error cleared MES NO Replace current MCTL P W B with a new P W B Is D4 Error cleared NO Re check YES Complete MCTL IOD2 91 8 Z n Zz O Developer Solenoid PSL YM Confirm the connection of Connector Is the connection proper between ECN3 of IOD2 and Solenoid PSL YM c Is the harness of Solenoid PSL YM broken Check the voltage at PSL YM ON N Does the voltage drop q amp between ECN3 11 and ECN2 8 TES Does the voltage jump _ between ECN1 5and ECN2 12 Replace current MCTL P W B with a new P W B Is D5 Error cleared Complete NO Connect the harness Connect the connector properly Is D5 Error cleared MES Complete NO Replace the front cover unit with a new unit Replace IOD2 P W B with a new IOD2 P W B Is D5 Error cleared HE Complete NO MCTC IOD2 PSL YM ON P PSL YM ON N LL 8 Error Code D6 Develope
25. Installation of Lower Feeder Unit to Printer LFU CD Lay the lower feeder unit on the solid and flat surface of set up table i Leave the set up guide as fixed to the lower feeder unit LFU Set Up Guide R Cassette 2 Pull out the connector cable accommodated in the right corner as viewed from rear side of lower feeder unit i Remove the LF connector cover of LFU Lower Feeder Unit side Connector Cable LF Connector Cover 13 3 3 Assembly Procedures 1 Installation of Lower Feeder Unit LFU to Printer continue Printer engine weighs approximately 32kg Do not attempt to carry the printer engine by yourself because it is dangerous for one person to move It may require two adults or more to move this printer Since this printer is a precision equipment move it slowly without giving any shock whenever relocated 3 Confirm the position of connector pins 3 pieces for the printer engine 4 Lift up the printer engine by two persons and put it on top of the LFU i Slowly let down the printer engine along the set up guide provided at both sides of LFU so that the holes of printer engine s rear face meet the connector pins Printer Engine LFU Unit ii After having placed the printer engine on LFU confirm the joint with the connector pins at three locations 14 3 3 Assembly Procedures 1 Installation of Lower Feeder Unit LFU to Prin
26. Phillips Screwdriver 2 For M4 3 Phillips Screwdriver short shank 2 For M4 4 Slotted Screwdriver 1 For slotted head screw 5 Slotted Screwdriver 2 For slotted head screw 6 Long Nose Pliers For general use 7 Pincette For general use 8 Precision Driver Set 1 6 For general use 9 Gap Gauge Adjustment of Gap 10 Pliers for C Ring C Ring 11 Ruler 150mm For general use 12 Slide Caliper For general use 13 Digital Meter For general use 14 Handy Type Cleaner unique for toner For cleaning 15 Soft Fur Brush For cleaning 5 2 2 List of Consumables for Maintenance Table 5 2 below lists up the consumables for maintenance Table 5 2 No Name of Tool Parts Code Quantity Function 1 Toner Cartridge Y 1 piece Test Print 2 Toner Cartridge M 1 piece Test Print 3 Toner Cartridge C 1 piece Test Print 4 Toner Cartridge K 1 piece Test Print 5 Cleaning Pad Oil Bottle 1 piece Test Print 6 Belt Cartridge 1 piece Test Print 7 Recommended Paper A4 or Letter 5 sheets Test Print 8 Recommended Paper OHP 2 sheets Test Print 9 Cotton Cloth Unwoven fabric 10 15 pieces Cleaning 10 Cotton Applicator 10 15 pieces Cleaning 11 Grease 10 gram M G PS265 12 Vinyl Bag 2 bags Disposal 1 M G stands for Molybdenum Grease 5 3 5 1 2 Cleaning for Periodic Maintenance See Table 5 3 for details of periodic maintenanc
27. Replacement Criteria Since the paper feeding roller and separator pad are defined as periodic replacement parts as per Table 7 1 they should be replaced when the feeding jam 17 MEDIA JAM FEED occurs 2 Replacement Procedures D Whenever the feeding jam occurs confirm the cause pursuant to the item 8 1 2 Paper Transportation Error 2 If the cause of feeding jam is rested on the paper feeding roller or separator pad replace them pursuant to the replacement procedures set out in the item 7 6 4 3 Cautions This work is one of periodic replacement jobs but cannot be the customer service This should be implemented upon request of customer or at periodic maintenance 2 After the replacement confirm the feeding of media such as plain paper OHP and stack paper 5 27 5 2 8 Replacement of Transfer Drum 1 Replacement Criteria Since the transfer drum is defined as periodic replacement parts as per Table 7 1 it should be replaced when the print quality failure occurs due to failed transfer drum 2 Replacement Procedures D Whenever the feeding jam occurs confirm the cause pursuant to the item 8 3 Print Quality Failure 2 If the cause of failure is rested on the transfer drum replace it pursuant to the replacement procedures set out in the item 7 6 3 3 Cautions D This work is one of periodic replacement jobs but cannot be the customer service This should be implemented
28. Table4 1 Interface Circuit No Interface Circuit Name of Signal M5M34050 1500 e VIDEO N e VIDEO P M5M34050 e HSYNC N e HSYNC P SN74LS14 45V 220 s 220Q GND T 001HF 3390 GND e PRREQ N e COMMAND N e D1 N e D2 N SN7406 45V 3 3KQ e VSYNC N e IREADY N e STATUS N e KEY STATUS N 4 48 d Connector Pin Assignment Connector type of the Printer side is 128A 064S2B 13A DDk or the equivalent Table 4 2 Connector Pin Assignment Pin No Signal Name Pin No Signal Name 1A PSGND 1B 5V 2A PSGND 2B S 5V 3A PSGND 3B 5V 4A PSGND 4B 5V 5A PSGND 5B 5V 6A PSGND eB 5V 7A PSGND 7B 5V 8A PSGND 8B 5V 9A VIDEO P 9B VIDEO N 10A RET GND 10B Reserve 11A HSYNC P 11B HSYNC N 12A ID2 N 12B Reserve 13A RET GND 13B VSYNC N 14A RET GND 14B Reserve GND 15A RET GND 15B STATUS 16A RET GND 16B IREADY N 17A RET GND 17B Reserve 18A RET GND 18B COMMAND 19A RET GND 19B PRREQ N 20A RET GND 20B Reserve 21A ID1 N 21B Reserve 22A RET GND 22B KEY STATUS N 23A Reserve 23B Reserve 24A Reserve 24B Reserve 25A RET GND 25B Reserve 26A RET GND 26B Reserve GND 27A RET GND 27B Reserve 28A RET GND 28B Reserve 29A RET GND 29B Reserve 30A RET GND 3
29. abandoned papers with new papers 3 Is the print paper set in place NO SS Ine Aper ININE Paper proper place Cassette Set the end plate to meet 2 4 Is the end plate properly set up NO the paper size Is the print paper caught in the Remove the paper being 5 YES paper feeding part caught Pick Up Roll ERSP oka Ask the serviceman to 6 Is the pick up roller damaged NO replace the damaged pick up roller P Procedure Number 8 4 2 Inner Jam Table 8 2 2 Problem Item P Check Item Result Corrective Action Open the transfer unit for check 1 Is there any paper inside the YES Remove the paper unit inside Transfer Is the transfer roller firmly locked Fix the transfer roller by Unit by the lock lever NO the lock lever y Install the paper 3 E m docs a un NO discharger unit firmly installed in place in place Is the wire of paper discharger Replace the existing 4 nit damaged 2 YES paper discharger ui geo unit with new unit Is the fuser unit installed in Install the fuser unit 5 place NO firmly in place Is there any paper pinched Remove the pinched Fusing Unit 6 between the rollers YES paper Is there fuser oil still in the oil Replace the existing oil 7 bottle NO bottle with new bottle P Procedure Number 8 5 3 Outer Jam Table 8 2 3 Problem Item P Check Item Result Co
30. from the developer drive unit Remove the developer drive motor Remove the developer clutch See the item 7 4 5 Assembly Procedures D Install a new developer drive motor to the developer drive unit 2 Install the developer drive unit to the main body 3 After the above follow exactly the reverse order of disassembling procedures Precautions 7 30 p Developer Drive Motor Develo an Develo e m E R e o S o e o c x I y 3333 NV TAA nd nd nd Q N per Drive Unit per Clutch e te SY KG Fig 7 23 a 7 31 7 3 3 Optical Unit Scanner Motor inclusive Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the toner cartridge Remove the belt cartridge 8 Remove the cover C Cover C is fixed by the plastic projection and hole at three locations each in the front side and rear side i Release the fixing of three locations three holes at the rear side ii Pulling the cover C toward you release the fixing of front side lock 4 Remove the cover C from the printer Unhook the harness tube from the hook Remove the set screws BT3 X 8 4 pcs of optical unit Disconnect all the harness connector connected with the optical unit D Remove the optical unit from the printer Assembly Procedures D Having a new optical unit align the locatin
31. maintenance work of each printer components Procedure 1 Simultaneously pressing the three keys namely scroll keys left lt amp right and FREE SIZE key turn the power switch on by push on operation 2 Using the scroll keys select key and clear key select the mode necessary for the maintenance work from the configuration shown in the table 6 1 How to designate the necessary mode 1 Press the scroll key so that service mode SERVICE MODE a b and c shows up one after another a to be selected TEST PRINT 2 After selecting the desired mode execute the selected mode by pressing the select key SERVICE MODE 3 Press the clear key if the mode should be b cleared SERVICE MODE FACTORY MODE 6 9 3 GRID PRINT Grid Pattern of single color or two color R G B and Strip Pattern of full color can be printed for Test Print Procedure Step Description of Procedures Message in LCD SERVICE MODE 1 Press Select key a gt b D TEST PRINT 31 GRID PRINT 2 Using Scroll key select the desired pattern ex grid GRID PRINT STRIPE pattern and then press Select key b gt c 31 GRID PRINT Y M C K R G B Usi R YM 3 sing Scroll key select the desired color ex red l color and then press Select key c gt d G YC B MC 31 GRID PRINT YM After completion of the wa
32. 0555555 Ozone Filter a Se b h b d b d Sy eS of of oy Sf of mah 126164 9 1 Every 1 Year SPARE PARTS LIST for SL1 COLOR LASER PRINTER 2 Covers and Power Cord Name of Parts Parts Code Q ty Unit Remarks Power Cord US 126148 Power Cord JP 126149 Paper Casette 126151 Top Cover 126107 Side Cover R 126108 Side Cover L 126109 Upper Side Cover 126110 Front Cover 126114 Paper Exit Unit Cover 126116 Paper Exit Front Cover 126117 Base Cover R 126120 Base Cover L 126121 Rear Cover 126122 Rear Cover U 126123 Rear Cover L 126124 VU Vs VsSVUSOSVOSVUsSVs Vs VUs VJSVUs W O ABB BB B BB RIB PR IR IR LR 9 2 SPARE PARTS LIST for SL1 COLOR LASER PRINTER 3 Layout of Right Side and Front Name of Parts Parts Code Q ty Unit Remarks Front Cover Unit 126113 Paper Feeding Clutch 126152 Registration Clutch 126153 Fuser Clutch 126154 Developer Clutch 126155 Transfer Solenoid 126157 Drum Cleaner Solenoid 126158 Main Motor 126159 Main Gear Unit 126160 Developer Drive Motor 126161 Developer Drive Unit 126162 Paper Size Sensor 126166 m PT1 PT2 HPS PEU GHP1 3 67 Paper Sensor 12616 8 GHP2 TBFL FC DCLK DCLY DCLM DCLC O O O O O OJOJOJO O O a2 L Bj jLB lB 2 2Bijilo B amp ojB BJ ARI AIHA IRIRIRIR IR AR O 9 3 SPARE PARTS LIST for SL1 COL
33. 1 MMC PIC 2 1 2 2 General Specification LLL 2 2 2 3 Environmental Condition 2 5 2 Specifications of Product 2 1 Rating N WARNING Use the power supply cord provided as an accessory or the similar cord complying with following specification 3 wire power cord with grounding Use of the out of specification cord may result in the electric shock Name of Model Voltage V Frequency Hz Input Current A Power Cord Piece SL1 U 120 50 60 8 1 Standard SL1 E 220 240 50 60 4 Not included 1 SL1 J 100 50 60 10 1 Standard meo cord complying with the following specifications As to SL1 E customers are requested to purchase and use the power Figure Name of Model Rating Approval Agency Applicable Area VDE OVE SEMKO CEBEC Europe A HOSVV F3G0 75 250VAC 6A Ne KO DEMKO FIMKO Continent B HO5VV F3 0 75 250VAC 6A BS UK HITACHI LASER PRINTER MODEL RATING 120V AC 50 60Hz AMPS 8A MFG NO CIID CST CODE Hitachi Ltd 1 1 Hi gashitags cho 1 chome SL1 U Manufactured Hitachi shi ibarakiken 316 Japan WADS IN JAPAN complies with 21 CFR chapter 1 subchapter J Section 1010 1040 E Rating label of SL1 U Fig A Power Cord for Europe 9 lr MODEL itachi Ltd 1 1 Higashi 316 Japan Hitachi shi HITACHI LASER PRINTER SLI E
34. 1 1 Precaution in Handling Since a high quality laser printer is a precision equipment the daily checking and periodic maintenance is indispensable to maintain an expected hig performance Following is the list of important precautions amp action items as to the maintenance and periodic replacement parts 1 4 Refrain from any operation disassembly and modification that are not set out in this manual 2 When assembling or disassembling the printer turn the power supply off at first and unplug the power supply cord prior to commencing any work 3 Whenever having replaced any parts confirm the replaced parts in place prior to driving the printer Read carefully and understand well any precaution or warning labels affixed to any parts Unless otherwise specified precisely follow the reverse order of the disassembly procedures for the re assembly Do not get confused with the kind of removed screws and also length Do not use any solvent for cleaning no matter inside or outside of printer It is strictly forbidden to dump the waste toner together with flammable substances or throw it into the fire This is a very important caution to be respected 5 1 1 List of Maintenance Tools Table 5 1 below lists up the maintenance tools for the printer Table 5 1 No Name of Tool Function 1 Phillips Screwdriver 1 For M3 2
35. 2 Remove the paper exit cover See the item 7 1 5 S Remove the C ring of both sides left and right 4 Remove the shaft support at the both sides Remove the paper exit roller from the frame Assembly Procedures I Put a new paper exit roller through the frame s hole 2 Install the shaft support of both sides left and right S Install the C ring of both sides to the groove of paper exit roller Precautions 7 71 Heater Fan B Release arm H Harness Cover Paper Exit Cover Spring Discharge brush Metal Cring 7x Paper Exit Roll Ce aper Exit Roller 4 2 SS p adi ea ISS tre n LRU BRN er eee zo B qm i Ch Nd 27 Jn S 5 Paper Exit Roller Pd K A NS Metal Cring Cring Fig 7 55 7 72 7 6 7 Discharger Brush Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the paper exit unit See the item 7 1 5 2 Remove the paper exit cover See the item 7 1 5 S Remove the paper exit front cover 4 Remove the set screw BT4X 6 2 pcs of discharger brush Remove the discharger brush Assembly Procedures D Install a new discharger brush to the paper exit unit Precautions Do not deform the fur brush of discharger brush 7 73 Heater Fan Release arm H Harness Cover Paper Exit Cover g Fig 7 56 7 74 7 6 8 Waste Toner Feeder D Stay A Assembly
36. 5 1 U Fre L q 3 I4 Message LED is lit Engine is ready to print For 1 2 3 and 4 appearing in the LCD see the description of code number 00 above 5 Print color is indicated as follows Y Yellow M Magenta C Oyan K Black YM Yellow amp Magenta YMCK Full Color 11 CHK MEDIA 1 4 Engine is idling Message LED is lit 1 Applicable paper feeder is indicated as follows UPP Upper Cassette LOW Lower Cassette Confirm whether applicable paper cassette is loaded with papers Press Media Key if media shall be changed NO PAPER 11 NO MEDIA 1 4 Engine is idling Message LED is lit 1 Applicable paper feeder of paper empty condition is indicated as follows UPP Upper Cassette LOW Lower Cassette Replenish the empty cassette with papers NO TRAY 12 NO TRAY 1 4 Engine is idling Message LED is lit 1 Paper feeder without the paper cassette is indicated as follows UPPER Upper Cassette LOWER Lower Cassette Install the applicable paper cassette to the paper feeder indicated in the LCD 6 5 Code No Message in LCD Description of Message 13 REPLACE TONER Engine is idling Message LED is lit 13 REPLACE 5 5 Toner empty condition is indicated by the color code as follows x Y Yellow TONEN r4 M Magenta C
37. FIOD2 Cleaner Clutch M 24v 1 NC NC FBSLON N EECN8 FIOD2 V mCh FIOD2 Transfer Solenoid EECN5 FIOD2 N b FIOD2 Paper Feeding Clutch M 24v 1 NC PKCLUON N EECN12 FIOD2 5 FIOD2 Main Motor M MMRDY N MMON IN MMCLK PGND 24v 1 SGND 5v 1 MMENC MMREV N wWOlol lral a oa B wN EECN15 FIOD2 i FIOD2 Developer Motor Z o M DMRDY N DMON N DMCLK PGND 24v 1 SGND 5v 1 NC DMREV N mn 2 3 4 3 6 7 8 9 4 60 G EACN2 F d hew d lt C s FPower Supply Unit Interl kn8witch EACN3 F d RN g dA d ec s FPower Supply Unit MCTL E V0 p6s MCTL POCN Fuser Unit MCTL P W B f amp dN s EBCN2 F t M n 14s FHigh Voltage Unit Fu eimWnit TH2 FUCHK FUCHKGND ELCN FMCTL LDU COs 2 d FMCTL LDU OPins M 5v R DREF2 DREF3 5v 1 LDREF1 LDREFO LREADY LCONT2 LCONT1 VIDEO VIDEO BDT BDT SGND SGND SCMCL SCMRDY N SCMON N PGND 24v 1 4 61 Q3 EDCN8 FIOD1 jbg FIOD1 Lower Feeder Unit M 24v 1 NC PKCLLON NC 5v 1 5v 1 PEL P PSL1
38. Guide UL Ass y OHP Senso p TRE Paper Guide UL Ass y Side View from Rear Side Paper Sensor PE Fig 7 42 7 53 7 5 5 Paper Size Sensor PSU Tools 1 Phillips Screwdriver Disassembly Procedures D Remove the side cover L See the item 7 1 2 2 Remove the power supply unit See the item 7 2 5 8 Remove the set screw BT3x8 2 pcs of the paper cassette guide L assembly 4 Pull the paper cassette guide toward you Remove the connector for the paper size sensor Remove the paper cassette guide L assembly from the frame D Remove the set screw BT3X8 2 pcs of paper size sensor from the cassette guide L Assembly Procedures D Install a new paper size sensor PSU to the paper cassette guide L 2 After the above follow exactly the reverse order of disassembling procedures Precautions Paper Size Sensor Power Supply Unit Cassette Guide L Fig 7 43 7 54 7 5 6 Drum Jam Sensor DPJ Tools D Phillips Screwdriver 1 2 Disassembly Procedures Cp Remove the fuser unit 2 Remove the belt cartridge 3 Remove the drum cleaner Remove the transfer drum See the item 7 6 3 Remove the cover F Disconnect all the connectors connected with the drum jam sensor D Remove the drum jam sensor from the stay B Assembly Procedures D Install a n
39. Lamp and Holder Set Fusing Roller 123828 Back up Roller 123832 Thermistor Ass y 126134 9 6 P Q a WEN ik Y Z EEA N LIL Assembly Manual of Lower Feeder Unit Model LFU 1 Applicable Printer Hitachi Color Laser Printer Model SL1 Series Hitachi Ltd Important Note Read this Manual thoroughly before assembling the lower feeder unit to Hitachi color laser printer and understand well the procedures and safety precautions set out in this document This Manual is recommended to be kept at handy for use FCC Notice This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of FCC Rules These limits are specified to provide the reasonable protection against harmful interference in a residential installation Since this equipment generates uses and radiates the radio frequency it may cause harmful interference to the radio communications if not installed or used in accordance with the instructions set out hereunder However there is no guarantee that such interference will not occur in a particular installation If this equipment causes harmful interference to the radio or television reception which can
40. Outline of Product 1 1 Name amp Function of Each Parts 1 2 Internal Structure 1 3 Description of Operator Panel 1 Outline of Product 1 1 Name amp Function of Each Parts T Operator Panel op Lovar Paper Exit Cover Main Switch Front Cover Paper Cassette Front Face Paper Exit Unit Interface Connector Box Back Cover L AC Input Inlet Back Face 1 1 No Name of Parts Outline of Functions Top Cover To act as an upper enclosure and also a paper tray for printed papers To display a status of printer operation and 2 Operator Panel i motion To act as a front enclosure and to be opened 3 Front Cover when replacing a toner cartridge or waste toner pack To exit a printed paper onto a top cover l acting also as paper tray for printed paper i Paper EXPOSE To be opened when replacing an OPC belt cartridge i To operate power on and off of printer 2 Mal Ste Pushing for On Off operation 6 AC Input Inlet To connect a power supply cable To act as a rear enclosure and to be opened 7 Back Cover L when clearing an internal jam or doing a maintenance work 8 Interface Connector Box Space where a controller PWB to be installed 1 2 1 2 Internal Structure Transfer Unit Paper Discharger Transfer Roller Transfer Drum Paper Pick Up Roller Fusing Unit Drum Cleaner Belt Cartridge Toner Cartridge K Y
41. P W B the shield plate panel button and panel shield can be removed as shown in Fig 7 17 Shield Plate Panel Case LCD Cover Panel Button LCD Panel P W B Assembly Procedures D Assemble a new panel P W B LCD inclusive amp Panel Shield to the panel case Install each parts that have Plats been removed in the disassembly procedures 2 Install the panel case to the top cover and connect the connector Gy Upon completion of above installation i connect the power supply cable 4 Turn on the power switch of the printer S Execute the test print in Service Mode Confirm the panel switch and indicator Top Cover Precautions 7 21 7 2 5 Power Supply Unit Tools D Phillips Screwdriver 2 Slotted Screwdriver Disassembly Procedures D Remove the side cover LU See the item 7 1 1 2 Remove the side cover L See the item 7 1 2 S Remove the shield cover upper See the item 7 2 1 4 Remove the shield cover A See the item 7 2 1 Remove the shield cover B See the item 7 2 1 Disconnect all the harness connectors 5 pcs connected to the MCTL P W B Remove the set screw ST3X 6 2 pcs of controll fan assembly See the item 7 3 4 8 Remove I F P W B guide rail upper Remove the set screw ST3X6 5pcs of shield case A assembly 10 Remove the set screw BT4X 10 2 pcs of base cover R Q Remo
42. PERIOD No lt 123456789 gt 39 FACTORY MODE DP CHECK 6 22 45 NVRAM TUNE UP This mode is not used in the normal operation but is used when fine adjustment of the adjust value is required This mode consists of following 8 eight subordinate modes Configuration of NVRAM TUNE UP Factory Value at Ex Work a LP TUNE UP 3 THV TUNE UP g DBV TUNE UP o CBV TUNE UP o FBV TUNE UP 45 NVRAM TUNE UP 6 23 45 1 LP TUNE UP This mode shall be used when optical density line thickness and or color reproduction need to be adjusted The adjustment will be made by changing the laser power against the reference value 0 zero in the range between the step 4 and 4 Step Description of Procedures Message in LCD Press Select key after selecting NVM TUNE UP 39 FACTORY MODE a b gt NVM TUNE UP 45 NVM TUNE UP 2 After selecting LP TUNE UP Code 1 press Select key b gt c 5No 123456789 45 LP TUNE UP After selecting the color to be tuned up press 3 Select key Ex Yellow c gt d D Y M C K 45 YELLOW O Tune Up value can be adjusted within 8 steps between the step 4 and 4 432 101 234 gt 4 After selecting a given number press Select key d 45 LP TUNE UP 5Y M C K Press the Clear key to wrap up the tune up work for yellow color d gt e 5 Repeat the step 3
43. Unit OPC Belt Cartridge Transfer Unit Paper Discharger Unit Transfer Roller Transfer Drum Paper Feeding Roller Countermeasures 1 Check if the drum cleaner is properly installed or not 2 Replace the failed DC high voltage unit with a new unit See Section 7 2 6 8 57 No 21 Insufficient Gloss Phenomenon Gloss of the print is not sufficient as shown in the print sample of upper right corner Main Causes 1 Cleaning roller is stained 2 Fuser roller is deteriorated Cleaning Roller Fuser Roller Back up Roller Countermeasures 1 Replace the cleaning roller with a new roller See Section 3 3 3 2 Replace the fuser unit with a new unit See Section 5 2 2 8 58 No 22 Back Stain Phenomenon Back side of the print paper is stained as shown in the print sample of upper right corner Main Causes 1 1 1 1 Countermeasures u yi ser Unit Cleaning pad is stained Silicone oil is short Fuser roller and back up roller is stained 1 Fusing Unit Cleaning Roller Back up Roller 2 Clean the fuser roller and back up roller 3 Replace the fuser unit with a new unit See Section 5 2 2 8 59 Oil Bottle Fuser Roller Replace the cleaning roller with a new roller See Section 3 3 3 No 23 White Print Phenomenon Blank page no print at all
44. X 6 4 pcs of main motor from main gear unit 14 Remove the main motor from the main gear unit Assembly Procedures D Install a new main motor to the main gear unit 2 Install the main gear unit to the main body S After the above follow exactly the reverse Precautions 7 28 TR Side Cover R Top Cover E Stay R Sym z X vA lt A o 3 Q c oO LL o c o N O Side Cover L LE o 2 o s Drum Cleaner Solenoid 55 Fuser Clutch o 8 Cleaner Clutch Main Gear Unit e ID2 P W B Base Cover R Fig 7 22 7 29 7 3 2 Developer Drive Motor DM Developer Drive Unit Tools D Phillips Screwdriver 1 2 Disassembly Procedures S9 Good 00 e GG Remove the toner cartridge Waste Toner Feeder Pipe Remove the side cover R See the item 7 1 3 Remove the top cover See the item 7 1 4 Remove the IOD2 P W B Pipe Fixing Metal See the item 7 2 3 Fig 7 23 b Remove the harness guide Remove the set screws ST3 X 6 1 pc of waste toner feeder pipe and slowly turn the waste toner feeder pipe by approximately 90 degrees Disconnect the connector connected with developer drive motor Remove the set screws ST3 X 6 4 pcs of developer gear unit Remove the developer drive motor Remove the set screws ST3 X 6 4 pcs of developer drive motor
45. and 6 IOD1 P W B MCTL P W B and to drive the controlled parts 7 IOD2 P W B Ditto 8 DC Power Supply To provide the Printer with the power supply for the LVPS P W B printer control High Voltage Power To provide the Printer with the high voltage power 9 Supply HVU P W B supply that is necessary for the printing process 4 32 2 Motor Fig 4 29 No Name Code Function 1 Main Motor MM To drive the OPC belt and the paper transport system f To drive the toner cartridge and the 2 Developing Motor DM developing system 3 Scanner Motor SCM To scan the laser beam To exhaust the ozone from printer 4 Ozone Fan Motor OZFAN charger unit 5 Heater Fan Motor HTFAN To exhaust the heat of fusing unit To exhaust the heat of power supply unit 6 Controller Fan Motor CTLFAN and Interface Controller 4 34 2 Layout of Motors Fig 4 29 3 Clutch and Solenoid Fig 4 30 No Name Code Function Feeder Clutch PCLU To feed papers by coupling the feeding roller to the main gear unit at timing of the paper feeding Registration Clutch RECL To transport papers by coupling the registration roller to main gear unit as synchronized with the rotation of transfer drum Fuser Clutch FUCL To drive the fusing roller by coupling the fuser unit to the main gear unit Cleaner Clutch FBCL To drive the brush of drum clea
46. be checked and confirmed by powering the equipment off and on the users are encouraged to correct the interference by taking one or more of the following counter measures CD Reorient or relocate the receiving antenna 2 Give more clearance between the equipment and receiver 8 Connect the equipment into the outlet of other circuit which is different from the one being used for the receiver 4 Consult the dealer or experienced radio television technician for help Canadian Compliance This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Le presnt appareil numerique n emet pas de bruits radioelectriques depassant les lim ites applicables aux appareils numeriques de la Class B prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada Product Safety Laser Product SL1 is certified as a Class 1 laser product and complies with DHHS Laser Radiation Standards 21 CFR Chapter 1 Subchapter J CLASS 1 LASBR PRODUCT APPAREL A LASER DE CLASSE 1 LASER KLASSE 1 PRODUKT Use of controls adjustments or performances of procedures other than those specified in this Manual may result in hazardous radiation exposure SL1 is provided with the ozone filter in order to reduce exhausted ozone in compliance with Product Safety
47. between ECN1 20 and ECN2 12 of IOD2 to be a rising edge Replace the IOD2 P W B Ge 8 NO Is E8 error cleared NO Replace the MCTL P W B YES Job is complete MCTL 12CN 20 92 8 Error Code E9 Concerned Part Belt Sensor P B S Is a belt cartridge leaned to one side YES Replace the belt cartridge NO Install the printer to be leveled out Is a belt sensor stained IES Clean the belt NO Confirm the connection of connector Is E9 error cleared NO Connect them properly Is E9 error cleared NO Is DCN11 of IOD1 properly connected with a connector of the sensor Is DON1 of IOD1 properly connected with 11CN of MCTL P W B p YES Check the voltage i 5V 1 Is the voltage 5V between DCN11 2 and 3 of IOD1 NO Is the voltage 5V between DCN1 5 and 1 of IOD1 Is E9 error cleared o Replace the MCTL P W B YES Job is complete MCTL IOD1 Replace the belt sensor P B S Replace the IOD1 P W B Job is complete Belt Sensor P B S Sensor LZe 8 Concerned Part Erase Lamp iEL j Confirm the connection of a erase lamp connector Is DCN of IOD1 properly connected with a connector of the erase lamp Is DCN1 of IOD1 properly connected with 11CN of MCTL P W B YES Check the voltage iELON N P 4 Is a single voltage between DCN7 11 and 9 to be a trailing edge xES Is a single voltage between
48. damaged Learn how to operate the equipment and how to use the control properly Do not let anyone operate without acknowledging the instructions Keep the equipments in proper working condition Unauthorized modification to equipments may impair the function amp safety and affect the life of equipments Listed below is the various kind of WARNING contained in this Manual HAZARDOUS VOLTAGE It may cause serious injuries or fatal accidents Voltage is now applied from the power supply of printer There is the danger of electrical shock if you touch the active area inside the printer Make sure to turn the power supply switch OFF and pull out the plug from the outlet before starting maintenance work to printer Follow Safety Instructions continue HARMFUL OZONE GAS Inhalation of excessive amount of ozone gas may adversely affect the respiratory organs Ozone Filter is provided to this printer to reduce the exhausted ozone This filter must be replaced with new filter periodically in accordance with the Manual attached to this printer Listed below are the various kinds of CAUTION contained in this Manual AX Hat surface Hebe oberfiache Surface chaude Avoid contact Bai beseitigunig Eviter toul conlael HOT SURFACE Can cause a burn Fusing Unit is approx 160 C hot so that perimeter is also very hot When you need to change the cleaning pad or remove jammed papers wait about 20 minutes after ope
49. magenta and cyan Fig 4 2 shows the three primary colors and subtractive process Y Yellow M Magenta C Cyan R Red G Green B Blue K Black Fig 4 2 2 Basic Process of Color Printing a Printer has the Toner Cartridge of each colors yellow magenta cyan and black as shown in Fig 4 3 b Toner image developed with the primary colors is transferred to the transfer drum for the color combination as shown in Fig 4 4 a c Toner image formed on the transfer drum is transferred to a transported paper as shown in Fig 4 4 b d Toner on the paper is fused by the thermal fuser unit to fix the toner image on the paper as shown in Fig 4 4 c Summarizing the above processes a toner color layer is formed on the transported paper and subsequently the color image is made through the subtractive process 4 3 Transfer Drum Toner MOM Lao CO IXY CX AR AR 22272 7 IT Transfer Drum l ov OW p MOU GOLCCO Paper j Red Cyan Green n 77 Fusing OL 7 7 77 Paper 9 First Transfer p Second Transfer Fig4 4 4 4 3 Structure of OPC Belt OPC belt consists of the surface layer having a photoconductor OPC of organic material the inner layer of an insulator material PET and the aluminum deposit layer in between OPC belt is located as shown in Fig 4 5 as a main part of the print system Belt Cartridge Toner Cartridge Optical Unit Fig4 5 Electrode Photoconducto
50. oil pan Remove the set screw ST3X 6 2 pcs of F cover B Remove the F cover B Remove the set screw F4X 6 2 pcs of low guide Remove the low guide Remove the set screw ST3X6 2 pcs of frame assembly 9 Open the upper face of frame assembly 0 Remove the back up roller from the frame VO 9 C 6 S 9 Assembly Procedures D Install a new back up roller to the frame 2 After the above follow exactly the reverse order of disassembling procedures Precautions Do not let any foreign particle such as debris adhere to the surface of back up roller Frame L Frame R Back up Roller B B Fig 7 62 7 83 8 Troubleshooting 8 1 Outline of Troubleshooting eae Aa aA ae ore Se a aed Sen 8 1 8 1 1 Op r tor Gall TCU 8 1 8 1 2 Paper Transport Error s suere ripe aaaea 8 4 G2 Printer EWOF 2 634 uer Rh EEEERZGEESOdam pa e dde 8 7 8 3 Imaging Failure 8 Troubleshooting 8 1 Outline of Troubleshooting Printer in trouble Reset the power after once turning off the main switch Trouble Repeat Is power supply operating normally Check power cord and cable Normally Operating Y Y Y Y Operator Call Paper Transport Error Printer Error Imaging Failure Section 8 1 1 Section 8 1 2 Section 8 2 Section 8 3 8 1 1 Opera
51. strictly respected Documentation Disclaimer HITACHI LTD MAKES NO REPRESENTATION OR WARRANTIES OF ANY KIND WHATSOEVER WITH RESPECT TO THE CONTENTS HEREOF AND SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE SAFETY INSTRUCTIONS 1 Safety Instructions 1 1 Safety Principle 1 Before starting your operation read this Manual thoroughly Especially read the safety instructions of this section carefully and understand the contents 2 Perform all the operations by following the procedures described in this Manual Follow all the cautions and warnings set out in the procedures and on safety labels affixed on the machine Failure to do so may result in the human injuries or equipment damages 3 Perform only the procedures explained in this Manual Refrain from opening or touching any portions that are not related with your operation 4 Repair and replacement of parts should be performed by trained and qualified persons only Operator should not attempt to do such repair or replacement works 5 It must be appreciated that above mentioned cautions and warnings do not cover everything because it is impossible to guess or evaluate all the circumstances beforehand 1 2 Special Safety Information 1 Introductory Information The cautions and warnings are made clear by following the Safety Alert Symbol or Signal Words such as DANGER WARNING and CAUTION D Sa
52. suit to the print media in use 2 Use the recommended paper 3 Replace the failed fuser unit with a new unit 8 61 9 Parts List 1 Replaceable Unit Parts ApS EUER 9 1 2 Govers and POWGr COM a so caer c t eae eR da e t ae eta n 9 2 3 Layout of Right side and Front Parts 222 005 9 3 4 Layout of Left side Parts 2x44 3e oec deter RUE ERR 9 4 5 Layout of Top and Rear side Parts 2 02 0005 9 5 6 Fuser Unit Parts SPARE PARTS LIST for SL1 COLOR LASER PRINTER 1 Replaceable Unit Parts ILLUST Number Name of Parts Parts Code Q ty Unit Remarks 1 Toner Cartridge Y 30129001 30129002 6 000 images 6 000 images Toner Cartridge M Toner Cartridge C 30129003 6 000 images Toner Cartridge K 30129004 10 000 images OPC Belt Cartridge 30129005 50 000 images 42 E 1 1 j Cleaner Oil Bottle 30129006 12 000 pages 1 6 1 3 6 2 Cleaner Oil Bottle 1 7 Waste Toner Pack 30129007 24 000 images 1 27 Fusing Unit US 126126 Every 60K pages 1 28 Fusing Unit EC 126127 Every 60K pages 1 29 Fusing Unit JP 126128 Every 60K pages 1 37 Transfer Roller Paper Discharger 126137 126138 Every 120K pages Every 120K pages Drum Cleaner 123875 Every 120K pages Oil Bottle 24 000 images Fuser Cleaner 30129008 Every m
53. the laser drive control circuit has the laser diode switched on and radiated according to the video signal 2 Radiated laser beam is sensed by the photo detector PD and the detecting signal is fed back to the output control circuit 3 Output control circuit controls the radiation output to be constant by comparing the laser output default with the feed back value transmitted from the output sensing circuit 4 Laser beam scanned by the scanner motor is sensed by the beam detector PD and then the beam detecting timing BDT signal will be outputted 4 42 v v PRINT Signal VIDEO Signal i Beam Scannin EE h Control Circuit ynchronizie p Circuit e i LCD P W B MCTL P W B Frequency Control Circuit Fig 04 33 J Laser BDT Il mur Scaner Motor 3 Control of Fusing Temperature Each rollers of the fusing unit are controlled to maintain the appropriate temperature so that toner will be fixed on a print paper D Basic Structure of Temperature Control Fig 4 34 FLS TFU1 TFU2 TH RY GA CPU CM1 CM2 CM3 Q HR BR Thyristor to control the on off operation of power supply to the heat lamp Temperature fuse to shut down the circuit for safety when it will be too hot within the fusing unit Temperature sensor to detect the surface temperature of the heat roller HR Relay to prevent the further heating when it will be hotter than the set point withi
54. the maintenance work 1 Normal Mode Provides the function to indicate the operation status and also messages relating with the normal operations which the operators are driving 2 Service Mode Is a unique mode for the serviceman only and provides the function code 31 through 37 to confirm the operation status during the maintenance work and 39 FACTORY MODE to confirm and set the operational status of main components 6 3 Operation of Normal Mode Normal Mode displays on the operator panel the operation status as connected to the ONLINE driving and the necessary information for the operator to implement an ordinary maintenance work Operation Procedures 1 Turn the power switch on by push on 2 ONLINE LED is lit and MESSAGE LED starts to blink 3 MESSAGE LED is lit approx 250 seconds after power on and READYI LED is lit as the printer is ready to print Operation Procedures See the table 6 2 for details of indications to be available in the normal mode 6 2 Normal Mode ONLINE LED ON ONLINE LED OFF 00 READY MESSAGE LED OFF WAIT MESSAGE LED BLINK PRINT MESSAGE LED OFF CHK MEDIA MESSAGE LED ON 11 NO MEDIA NO TRAY REPLACE TONER CHECK FUSER OIL 14 CHECK WASTE TONER PACK li CLOSE PANEL FRONT 18 CLOSE PANEL TOP CLOSE TR UNIT SLEEP MODE SERVICE CALL MESSAGE LED ON FACTORY MODE
55. through 5 whenever the tune up ao NVM TONE UF work is required to each color No 2 123456789 6 Press the Clear key to wrap up the tune up work e f 6 24 45 2 THV TUNE UP This mode shall be used when transfer voltage needs to be adjusted due to the errors caused such as transfer failure on the media The adjustment is to change the transfer voltage subject to the media to be used against the reference value 0 zero in the range between the step 4 and 4 Step Description of Procedures Message in LCD i Press Select key after selecting NVM TUNE UP one NODE a gt b 77 0 gt NVM TUNE UP 45 NVM TUNE UP 2 After selecting THV TUNE UP Code 2 press Select key b gt c No 123456789 45 THV TUNE UP 3 After selecting the media to be tuned up press gt PPC OHP LABEL Select key Ex PPC c gt d 45 THV PPC Tune Up value can be adjusted within 8 steps lt 432 101 234 gt 4 between the step 4 and 4 After selecting a given number press Select key 45 THV TUNE UP d PPC OHP LABEL Press the Clear key to wrap up the tune up work for PPC d gt e 5 45 NVM TUNE UP Repeat the step 3 through 5 for other media such as ONP erEanet SNo lt 123456789 gt 6 Press the Clear key to wrap up the tune up work e f 6 25 45 3 DBV TUNE UP This mode shall be used when image optical densi
56. 0B Reserve 31A RET GND 31B Reserve 32A RET GND 32B Reserve 4 49 4 2 3 DC Power Supply Unit D Output and Use Output Terminal Rated Output Use 5V 1 For control of Printer 5V 1R 4 8 5 3V 7 5A For control of Laser 8 5A 5V 2 For control of Interface 24V 1 24V 4 5A For control of Printer charging HP 120V 8A For connection of Fuser Heater HP HN 220V 5A For connection of Fuser Heater HN 2 Layout of Connector Pin Assignment Fig 4 37 4 50 LG v Inret p Main SW 1 Y Fig 4 37 2 Connector Pin Assignment ACN1 Manufacturer MoLex Type 53313 2215 ACN2 Manufacturer MoLex Type 5277 02A 4 52 Pin Signal Name Interface Pin Signal Name Interface 1 5V 1 5V 1 Output i Dewo ees ORDEI 2 sono REFE ang s oew 2EY Supi Moun 3 5V 1 5V 1 Output TEJRE 5 asnon nenea du ACNG BETTE Um Type 5565 000 7 24V EE Sh pinata Pin Signal Name Interface 8 SGND PRA ee un nd 1 5v 2 45V 2
57. 1 P W B Heatl FANah M 5v 1 PT2 N SGND HTFANON P PGND HTFANERR EDCN11 FIOD1 3 g Cee FIOD1 I e FIOD1 St FIODI P W B Belt GB amp bor FIODI P W B Oil gH or FIODI P W B Drum Paper Jam Sensor E EECN17 FIOD2 FIOD2 N bY Developer C utch M 24v 1 NC EECN16 FIOD2 FIOD2 DC C ON N N bM Developer Clutch M 24v 1 NC EECN14 FIOD2 FIOD2 DCM JON N N be Developer C htch M 24v 1 NC EECN13 FIOD2 FIOD2 DCW ON N N bK Developer Gf tch M 24v 1 NC EECN9 FIOD2 FIOD2 DC K ON N LN b Fuser Clutch M 24v els NC EECN11 FIOD2 N FIOD2 FUCLON N doe Cb Cleaner Clutch M 24v l NC FBCLON N EECN3 FIOD2 FIOD2 SLYMC Developer Solenoid M 5v 1 FL 2 N D 5v 1 PSENI D 5v 1 PSEN2 D PSEM 24 v 1 24 v 1 Q3 PSKC EECN6 FIOD2 FIOD2 Li te Ozen Fan M OZFANON P PGND EECN7 FIOD2 FIOD2 OZFANERR WXgN b Registlation Clutch M 24v 1 NC NC 4 59 RECL ON N Q9 EECN10 FIOD2 N iN mCh
58. 1 and lower feeder unit LFU 1 This assembly manual provides the assembly procedures how to install your lower feeder unit to Hitachi color laser printer SL1 series as well as the handling precautions e Please peruse this assembly manual prior to starting the installation of lower feeder unit and understand well the proper installation procedures e Please also peruse the operation manual separate brochure of Hitachi color laser printer SL1 prior to starting the installation of lower feeder unit and understand the proper installation procedures of your lower feeder unit as well as the handling precautions Contents Opine OF PIOGUCL ias os aod X ees 9 1 1 Name amp Function of Each Component 9 Specification of Product asse sieceu ER oe ds de 10 ANC sea cia Gace Wh ce sd te T2 T 2007 20 fe Oa TT 10 Assembly Procedures 0000 e eee eee 11 3 1 Installation Conditions 0 0 00 eee eee 11 3 2 Unpacking Procedures 22 222 rk ee 12 3 3 Assembly Procedures 0000 cee eee eens 13 Test Drive and Test Print 0 0 20 Clearance of Paper Jam 0 00 02 ues 21 5 1 Paper Feeding Jam 0 000 cee eee 21 5 2 Inner Jam amp Outer Jam llli 21 Periodic Maintenance nasaan anaana 22 6 1 Daily Maintenance iuum nm ex eee e je 22 6 2 Periodic Maintenance llle 22 Replacement Procedures of Main Parts 23 7 1 Pa
59. 2 E3 Transfer Drum Rotational Error 13 E4 Toner Empty Sensor Error TPD 14 E5 Transfer Roller Solenoid Error 15 E6 Brush Cleaner Solenoid Error 16 E7 Brush Cleaner Clutch Error 17 E8 Clutch Error of Fusing Unit 18 E9 Belt Sensor Error 19 EL Erase Lamp Error 20 FO Control Fan Error 21 F2 Ozone Fan 1 Error 22 F4 Fuser Fan Error 8 8 Table 8 1 Error Code 2 2 No Code Description 23 F5 Charging HV DC High Voltage Error 24 HO Fuser Thermistor Error 25 H2 Fusing Temperature Error Warming Up Time Error 26 H3 Fusing Temperature 3 Error Heater Continuous ON Time Error 27 H4 Fusing Temperature 4 Error Heater Continuous OFF Time Error 28 L1 Beam Sensor Error 29 L2 Scanner Motor Error 30 LL Laser Power Error 8 9 01 8 8 2 Troubleshoot Description of Error Cause of Error Clearance Method 1 Failure of MCTL P W B 1 Turn on and off the power switch NVRAM Error ECPU 2 Above method 1 does not work implement C3 Error Clearance Procedure EEEPROM 3 Replace the failed MCTL P W B with a new MCTL P W B Does the error repeat despite of implementing On Off of Power Switch YES Does the error repeat despite of implementing NVRAM INITIAL YES Replace the failed MCTL P W B with a new MCTL P W B Continue to drive the engine Continue to drive the engine Description of Error Cause of Error Clearance Method c4 Ha
60. 20K prints 4 Paper Discharger Unit Ra Separ ale Paper mo 5 2 4 Maintenance 2 0 AorB ransfer drum Code C OW 120K prints 5 Drum Cleaner To clean residual toner on 55 5 Maintenance 2 0 Aor B transfer drum Code C OW 6 Ozone Filter To absorb ozone 5 2 6 Every 12 months 1 0 Aor B 7 Paper Feeding Roller To pick up paper one by 120K prints one from paper cassette 5 2 7 No maintenance code 20 B or C i 300K images 8 Transfer Drum To form toner image and transfer it onto paper 9 2 8 No maintenance code 20 B or C 1 After completion of maintenance work clear the maintenance 1 C FO Fuser Oil 6 C KT Toner Empty K code displayed on the operator panel indicator 2 C FC Fuser Cleaning Roller 7 C BC Belt Cartridge 2 Normal time for replacement of specific parts 3 C YT Toner Empty Y 8 C FU Fuser Unit 3 Technical level required for replacement work Ace n or mn EON TAE 7 A Beginner B Experienced C Expert oner ENPU i pages per uni 5 C CT Toner Empty C 5 2 Periodic Maintenance Procedures 5 2 1 Replacement of OPC Belt Cartridge 1 Criterion of Replacement OPC Belt Cartridge should be replaced with new cartridge at 50 000 images or 12 months whichever comes earlier When time is due for replacement of OPC belt cartridge the warning code BC appears in LCD of the operator panel 2 Caution N PRECAUTION Do not directly touch the
61. 23825 automatic feeding of each one paper Paper Cassette 126151 To accommodate papers E LFU Base Cover R psa fo Right base cover E LFU Base Cover L ERE Left base cover Side Cover R PESE Right side cover Side Cover L PESE Left side cover 27
62. 5 press Select 2 key b gt c 5No 123456789 T 45 CBV TUNE UP Tune Up value can be adjusted within 8 steps 3 between the step 4 and 4 2h 84 dd ORAS After selecting a given number press Select key c c 45 NVM TUNE UP No 123456789 4 Press the Clear key to wrap up the tune up work for CBV c gt d 6 27 45 5 FBV TUNE UP This mode shall be used when the image defects attributing to transfer drum need to be improved Adjustment is to adjust the drum cleaner bias voltage against the reference value 0 zero in the range between the step 4 and 4 Message in LCD Step Description of Procedures Press Select key after selecting NVM TUNE UP a gt b 2 After selecting FBV TUNE UP Code 6 press Select key b gt c Tune Up value can be adjusted within 8 steps 3 between the step 4 and 4 After selecting a given number press Select key c 4 Press the Clear key to wrap up the tune up work for FBV c gt d 39 FACTORY MODE gt NVM TUNE UP 45 NVM TUNE UP No 123456789 45 FBV TUNE UP 4321012342 45 NVM TUNE UP No 123456789 6 28 46 NVRAM INITIAL This mode can initialize data clear all the data of NVRAM on MCTL PWB and also can execute NVRAM CLEAR to clear C3 error when occurred WARNING NVRAM INITIAL is not used under n
63. 69 7 6 6 Paper Exit Roller sisse enu eR Ree ha RR ERES RR E 7 71 7 6 7 Discharger Brush urea eoa qtodie trie tenen E ree em t hh eek 7 73 7 6 8 Waste Toner Feeder D 000 0c eee ee 7 75 7 6 9 Fuser CODDOBIOD ood 546058 pbcadeed peed heehee beaks be orb os 7 77 7 7 Parts Replacement of Fuser Unit 002 005 7 78 T Fusing Heater Lamp s aeuo res sehen bbe ea ay hee EMILE 7 79 772 Fuser RONGE srera ce hows gd ES RE fetes ER E BS EN DEREN dq 7 81 7 7 3 Back Up Roller 26 0 ceecceedbeceww thew RR RR ER Red hen 7 82 7 Replacement Procedure of Maintenance Parts Respect the procedures and precautions described below for the maintenance work 1 Do not implement any operation disassembly and modification etc which are not set out in this Manual 2 Turn the power supply OFF and unplug the power supply cable from the outlet prior to starting the disassembly or check 3 This printer incorporates the dangerous parts subject to the warnings such as High Temperature High Voltage and Laser Radiation Prior to starting any work to this printer make sure to read and understand the warnings set out in this Manual 4 Collect and dispose the waste toner or toner cartridge in this maintenance However strictly refrain from dumping them together with the inflammable or throwing them into the fire 5 Remove the grounding when replacing or removing DC power supply unit After completing the r
64. CLEAR CARE No lt FC BC FU OW gt CARED FC ROLL gt YES NO CARED BC UNIT YES NO CARED FU UNIT gt YES NO CARED 120K UNIT YES NO 36 CLEAR CARE No lt FC BC FU OW gt SERVICE MODE ATEST PRINT 6 15 37 MEDIA MAMAGE Signal from OHP sensor can be ignored at the media select OHP However this mode should not be used under the normal circumstances Procedure Step Description of Procedures Message in LCD Press Select key after selecting MEDIA MANAGE a gt b SELECT the DEFIANCE and then press the Select key if OHP sensor signal should be ignored b gt c In the normal operation the mode is preset to MANAGE SERVICE MODE MEDIA MANAGE 37 MEDIA MANAGE MANAG E DEFIANCE SERVICE MODE DP CHECK 39 FACTORY MODE This mode consists of 9 nine subordinate modes for the confirmation of operations and the resetting functions necessary for the maintenance work Basic Configuration FACTORY MODE DP CHECK 41 BD CHECK 42 FU CHECK MARGIN ADJUST 43 44 LIFE PRIOD SET 45 NVRAM TUNE UP 46 NVRAM INITIAL 47 TOTAL PAGE SET 48 EACH IMAGE SET 6 17 DP CHECK Toner cartridge of each color can be driven Procedure Step Description of Procedures Message in LCD i Pres
65. D Description of Message 17 18 1 PAPER JAM 17 PAPER JAM 7 4 CLOSE PANEL 18 CLOSE PANEL 8 4 Engine is standstill Message LED is lit 7 Kind of jam location of jam is indicated as follows FEED Paper Feeder INNER Inside of Printer OUTER Paper Exit DRUM Transfer Drum This message will be cleared by pressing the Clear Key after open amp close operation of the front cover back cover and paper exit cover Engine is standstill Message LED is lit 8 Kind of the cover being open is indicated as follows FRONT Front Cover TOP Paper Exit Cover This message will be cleared by open amp close operation of the indicated cover 18 2 SET TR UNIT 18 CLOSE TR UNIT 4 Engine is standstill Message LED is lit e Transfer unit is not open Reconfirm the installation status of the transfer unit This message will be cleared by open amp close operation of the transfer unit 20 SERVICE CALL 20 SERVICE CALL 9 e Engine is standstill Message LED is lit 9 Service Call error code is indicated as follows For the details of error codes refer to the Section 8 Troubleshoot of this manual 6 8 6 4 Service Mode Service mode is a unique mode for the maintenance of printer only In this mode you can check the operation status of printer engine as OFFLINE and also carry out the
66. D Phillips Screwdriver 1 Disassembly Procedures D Remove the set screw ST3 X 6 1 pc of metal fixture for transfer unit Open the transfer unit and remove the shaft from the frame installation hole i Lifting the left side as viewed from you undo the shaft from the hole ii Slide the transfer unit to the left end undo the shaft of right side as viewed from you from the hole S Remove the transfer unit Assembly Procedures I Have a new transfer unit meet the installation hole of base i Put the shaft of transfer unit into the hole of right side as viewed from you ii Sliding the transfer unit to the left end put the left shaft to the hole 2 Install and fix the transfer unit with the metal fixture Precautions Transfer Unit PM Shaft alert lg Metal Fig 7 50 7 63 7 6 2 Register Roller Tools D Phillips Screwdriver 1 2 Slotted Screwdriver 1 Disassembly Procedures D Open the transfer unit 2 Remove the roller fixing C ring at both sides S Remove the gear from the shaft 4 Remove the shaft support at the both sides S Remove the register roller Assembly Procedures D Prepare a new register roller 2 Install the register roller to the frame s hole S Install the shaft support at the both sides Install the gear to the shaft Fix the shaft support and gear with the C ri
67. D1 Cc Is DCN1 of IOD1 properly connected with 11CN of MCTL P W B YES Check the voltage TRSLON N P YES Is a single voltage between ECN8 4 and ECN2 8 of IOD2 to be a trailing edge Is a single voltage between ECN2 3 and 12 of IOD2 to be a rising edge Is a single voltage between ECN2 31 and 1 of IOD1 to be a rising edge ues Connect them properly Is E5 error cleared YES Replace the transfer solenoid Replace the IOD2 P W B Replace the IOD1 P W B Is E5 error cleared NO YES Zz Job is complete Replace the MCTL P W B MCTL IOD1 Job is complete IOD2 424N A1 Transfer Solenoid IESLON si c8 Cleaning Brush Solenoid Confirm the connection of a cleaning brush solenoid connector YES Is ECN10 of IOD2 properly connected with a connector of the solenoid Ne Connect them properly Is ECN2 of IOD2 properly connected with DCN9 of IOD1 ls ECN1 of IOD1 properly connected with 11CN of MCTL P W B S i Is E6 error cleared YES y Job is complete NO YES Check the voltage iFBSLON N P d ls a single voltage between ECN10 4 and 8 of IOD2 to be a trailing edge YER Replace the transfer solenoid Is a single voltage between ECN2 2 and 12 of IOD2 to be a rising edge Replace the IOD2 P W B T Is a single voltage between ECN1 33 and 1 of IOD1 to be a rising edge AES Replace the IOD1 P W B NO Is E6 error cleared NO Replace the MC
68. DCN1 41 and 2 of IOD2 to be a rising edge Connect them properly Is EL error cleared NO Replace the LED P W B Replace the IOD1 P W B Is EL error cleared NO NO YES Job is complete Replace the MCTL P W B _ Job is complete Relay Connector Erase Lamp 82 8 Fan Motor Control Cooling Confirm the connection of a fan motor connector NO Is DCN13 of IOD1 properly connected with a connector of the fan motor Connect them properly Is DCN1 of IOD1 properly connected with 11CN of MCTL P W B Is FO error cleared ES Job is complete YES Check the voltage iCTFANON P NO Is the voltage between DCN13 1 and 2 to be a trailing edge ES Replace the fan motor Is the voltage between DCN1 47 and 1 to be a trailing edge Replace the IOD1 P W B NO Is FO error cleared NO Replace the MCTL P W B YES Job is complete MCTL IOD1 4 CTEANON P ja gt PGND 3 LCTFANERR Control Fan PGND 47 CTFANON P 6z 8 Error Code F2 Concerned Part Fan Motor iOZFAN j Confirm the connection of a fan motor connector NO Is ECN6 of IOD2 properly connected with a connector of the fan motor Ti Is ECN1 of IOD2 properly connected with 11CN of MCTL P W B YES Check the voltage iOZFANON P s Ei Is the voltage between ECN6 1 and 2 to be a trailing edge ae Is the voltage between ECN1 19 and 2 to be a trailing edge Co
69. E BAG ST ST KIT TAPE TAPE PR TAPE STARTER KIT PACKING U STARTER KIT PACKING L SILICA GEL ST POLYETHYLENE BAG T POLYETHYLENE BAG CL CL POLYETHYLENE BAG OIL POLYETHYLENE BAG OPC Aj BR pf A Sp JOINT OUTER BOX TAPE 3 2 2 Unpacking of Starter Kit Procedure of Unpacking D Open up the vinyl sheet covering the starter kit 2 Confirm all of the following kits to be inside the starter kit s packing box No Name of Kit Appearance Quantity 1 Toner Cartridge 4 Y M C K 2 OPC Belt Cartridge 1 lq 3 Oil Bottle N 1 set 4 Cleaning Roller 1 3 4 3 3 Installation Work Install the unit parts of starter kit to the printer according to the following procedures 3 3 1 Installation of OPC Belt Cartridge Fig 3 3 3 6 N PRECAUTION Do not directly touch the OPC belt surface with bare hands or gloves If OPC belt is exposed for more than two minutes under the light of 800 lux the belt may be defective Procedures of Installation D Open the front cover 2 Open the paper exit cover 3 Erect the lock lever BC provided at both sides left and right Front Cover Fig 3 3 Guide EN Lock Lever BC Lock Lever BC Right 4 Pull and remove the tension release Fig 3 4 pins of both sides left amp right Prot
70. EQ MEDIA Confirm with correct paper size Misprinting occurred Confirm with consistency of media ALIGN TONER CG Y M C K Confirm with installation of toner Toner cartridge not installed cartridge 16 ALIGN FU UNIT Remove fusing unit once and reset it Fusing unit not installed Reconfirm with firm installation ALIGN BELT CG Confirm the installation of belt Belt cartridge not installed cartridge 17 MEDIA JAM FEED Remove paper cassette and remove Paper jamming at feeding area paper jamming at feeding entrance 8 2 Subject of Operator Call Countermeasure Code Message of Display MEDIA JAM INNER Open transfer unit and remove paper Paper jamming inside printer jammed inside 17 MEDIA JAM OUTER Open transfer unit paper exit unit Paper jamming at paper exit area and remove paper jammed inside MEDIA JAM DRUM Open transfer unit and remove belt Paper jamming as winding around cartridge And then remove paper transfer drum jamming as winding transfer drum CLOSE PANEL FRONT TOP Confirm that covers are firmly closed Covers open 18 CLOSE TR UNIT Confirm that transfer unit is firmly Transfer unit open closed 19 SLEEP MODE Printer automatically returns to Printer under idling condition operating condition with PRINT signal WAIT 01 Printer under warming up READY 00 Printer ready to print as standby status T ese ale nonmauopera oC ONE
71. FC ROLL 012000P NEXT BL UNIT 05000P NEXT FU UNIT 060000P NEXT 120K KIT 120000P 6 11 33 CASSETTE TYPE Desired paper feeding cassette can be selected Procedure Step Description of Procedures Message in LCD Press Select key after selecting Screen a CASSETTE TYPE a gt b Using Scroll key select the applicable code of SERVICE MODE CASSETTE TYPE 33 CASSETTE TYPE TYPE lt A B C 2 desired cassette A B or C and then press the Select key SERVICE MODE CASSETTE TYPE 3 Press the Clear key to clear the screen b b gt c A US B EC C JPN 34 TOTAL PAGE Total number of printouts can be confirmed Procedure Step Description of Procedures Message in LCD Press Select key after selecting TOTAL PAGE mode a gt b 6 digit number is displayed 2 This number represents the total number of pages that have been printed out b 3 Press the Clear key to clear the screen b b gt c SERVICE MODE STOTAL PAGE 34 TOTAL PAGE 0 0 3 6 0 0 P SERVICE MODE TEST PRINT 6 13 35 EACH IMAGE Number of created images per each color used in printing can be confirmed Procedure Step Description of Procedures Message in LCD Press Se
72. GIN ADJUST mode d gt e Press the Clear key one more time to return to FACTORY MODE e gt f 39 FACTORY MODE MARGIN ADJUST 43 MARGIN ADJUST gt TOP LEFT LEFT2 43 TOP 2 0mm 765 3210 1 gt 4 43 TOP 2 5mm lt 101234A67 gt 43 MARGIN ADJUST TOP LEFT LEFT2 39 FACTORY MODE DP CHECK 44 LIFE PERIOD SET Replacement life of the periodical replacement parts can be set Procedure Step Description of Procedures Message in LCD 39 FACTORY MODE Press Select key after selecting LIFE PERIOD 1 mode a gt b LIFE PERIOD SET 44 LIFE PERIOD No lt 123456789 gt Using Scroll key select the desired code to be set and then press Select key PERIOD FC ROLL 2 2 Fuser Cleaning Roller b gt c 12000 P SET 7 Belt Cartridge d vee 8 Fuser Unit e 9 120K Replacement Kit f PERIOD BC UNIT Use Scroll key to designate or change the desired digit Use Select key to input values to the blinking digit 3 Upon completing the input of values to be set use the scroll key to move the cursor to SET displayed in the LCD and then press the select key to register the set value Press the Clear key to complete the setting work 9 4 Press the Clear key one more time to return to FACTORY MODE g gt h 05000 P SET PERIOD FU UNIT 060000 P SET PERIOD 120K UNIT 120000 P SET 44 LIFE
73. GPi 04s2 amp IOD2 P WAR r s b lk 4 57 EECN1 FMCTL IOD2 0s 2 d FMCTL P W M B IOI Z0Pins DCLC ON P DCM O P DCW ON P DCK ON P PSKY o P PSMC ON P MMCLK MMON MMREV N MMENC DMCLK DMON N ISCK IDATA ILOAD PKCLUON P RECLON P SPSLUON P OZFANON P FUCLON G5 EDCN15 FIOD1 N FIOD1 Cl M P EJ 0 TE eaning Roller Sensor 5v 1 CLROL N SGND e EDCN5 FIOD1 g9Zbg Lt m Ree FIOD1 sl CIODI h Z T IOD1 Upper Paper Empty GBtisor e e C FIOD1 Paper Feedifggrl3ensor IOD1 Drum Encoder S mebr Z o n ojoun B wN EDCN6 FIOD1 YZbg TCYZ T eee FIOD1 QHPT eRe FIOD1 Upper Paper Size Sensor eee FIOD1 OHP Sensor 5v PSU1 PSU2 PSU3 PSU4 SGND 5v 1 OHPSENU SGND SGND olol IAIN SB Wl d mn EDCN7 FIOD1 gi tY eec FIOD1 gi M EIODI gi tC e e FIOD1 gi 4K Q EFIODI ol fI IOD1I P W B Toner Empty eM r H elole NIAJ BR WI d eje EDCN13 FIOD1 8 g te FIOD1 P W B Controller Fan M CTFANON P PGND CTFANERR 4 58 EDCN10 FIOD1 Sel e ec FIOD1 LPTP e e FIOD1 P W B Paper ExHT2 Sensor eee FIOD
74. K CLEANING ROLLER is indicated again Check the installation of Cleaning Roller No Is Cleaning Roller is installed Install the Cleaning Roller properly Yes Confirm Cleaning Roller Sensor No Is the Cleaning Roller Sensor damaged Yes Replace the Cleaning Roller Sensor Yes Is Error Code 14 cleared O N Check the Harness shonted amp Replace IOD1 P W B No Is Error Code 14 cleared Yes Message MEDIA JAM FEED is indicated again Confirm the installation of Paper Cassette l No Is paper in use a recommended paper Use a recommended paper Is the paper cassette properly installed Reset the cassette properly No Yes Is the cassette base damaged or deformed Replace the cassette No Confirm PT1 Sensor Lever Yes Does PT1 Sensor Lever operate smoothly No Confirm PT1 Sensor Lever No Is Error Code 17 cleared Yes Complete Replace Paper Feeding Roller Separator Pad 8 3 h Message MEDIA JAM INNER remains Confirm if there is any paper debris found at paper feeding and transfer area or not aries Yes Is there paper debris within transfer unit Remove the paper debris Confirm the installation of transfer unit Is the transfer unit properly closed Open and close the transfer unit Yes Is PT1 Sensor Lever undone es Reset the PT1 Sensor Lever No Replace the PT1 Sensor Lever S Y Ye Is Error Code 17 cleared ie Check th
75. Line Print Upon confirmation of normal printing by the test print mode proceed with the On Line Print according to the following procedures However since this Operator Manual does not refer to the connection method of Interface or the operating method of Host side make sure to read the operation procedure of the Host prior to starting the On Line Print i Procedure of Operation Step Operation Details of Operation Connect the interface cable to the host machine Push the push button top of power supply Al A Confirm that the printer is set to the On Line mode Display as per right hand figure Upon completion of warming up process MESSAGE LED lamp is lit This warming up process is 210 seconds at maximum Confirm what is indicated on the operator panel 00 READY UPP UT Lt JE O O MESSAGE ONLINE MEDIA dd cO S Printer start the printing operation upon receipt of the PRINT signal transmitted from the Host 3 13 4 Structure of Each Component Systems 4 1 Basic UNCLES cctictciscasstti sap uu Oeo oe BREAD U b nSSEA PER MPUUIN EOU CUM EE RUE 4 1 4 1 1 Print System and Transfer System 4 6 4 1 2 elcicibe ir RS 4 24 4 1 3 Paper Transportation System 4 26 4 1 4 Fusing UNII e 4 28 42 Structure of Control System vec ccssercvndsnirccecanneencebidenennceetiede
76. M C No Name of Components Outline of Functions Toner Cartridge To contain the toners K Y M C for developing Each toner cartridge of K Y M C is independent Belt Cartridge To form images including the OPC belt Drum Cleaner To clean and collect waste toner adhering to the transfer drum Fusing Unit To fuse by heat the toner images on the paper Transfer Unit To transfer toner images from the transfer drum to the paper Transfer Drum To form color images maintaining the toner images of OPC belt on the drum Paper Discharger To emit the corona for separating a paper from transfer drum Transfer Roller To transfer the toner image of transfer drum to a paper Paper Cassette To feed papers automatically 10 Paper Pick Up Roller To feed papers automatically from the paper cassette 11 Optical Unit To generate a laser beam and scan over the OPC belt 1 3 Optical Unit Paper Cassette 1 3 Description of Operator Panel 1 Standard Description LCD 16 characters by 2 lines Message LED Online LED Media LED Online Key Media Select Key Free Size LED Red Free Size Key Clear Key Select Key Scroll Key Left S S 6 O G eto Scroll Key Right 2 Specifications of Product iss dr 2
77. MANUAL NO MAINTENANCE MANUAL FOR HITACHI COLOR LASER PRINTER MODEL SL1 Hitachi Ltd Tokyo Japan February 27 1998 Read amp Keep This Manual Read the safety instructions carefully and understand the contents before starting the maintenance Work Keep this manual always available for reference Revision Control Table Date of Revision Description of Revision July 14 1997 First Edition First Edition Original October 13 1997 First revision made and issued as Rev A February 27 1998 First revision made and issued as Rev B FCC Notice This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of FCC Rules These limits are specified to provide the reasonable protection against harmful interference in a residential installation Since this equipment generates uses and radiates the radio frequency it may cause harmful interference to the radio communications if not installed or used in accordance with the instructions set out hereunder However there is no guarantee that such interference will not occur in a particular installation If this equipment causes harmful interference to the radio or television reception which can be checked and confirmed by powering the equipment off and on the users are encouraged to correct the interference by taking one or more of the following counter measures CD Reorient or relocate the receiving an
78. OPC belt surface with bare hands or gloves If OPC belt is exposed for more than two minutes under the light of 800 lux the belt may became defective 3 Procedure of Replacement Fig 5 10 5 15 Replacement of Cleaning Roller CD Turn the power supply switch off 2 Open the paper exit cover 3 Remove the top cover 4 Unlock the lock lever BC of both sides left and right Lock Lever BC Guide Left N o r Lock Lever BC Right Lock Lever BC Fig 5 11 5 15 5 Pull out the belt cartridge Pulloutthe belt cartridge Prepare a new belt cartridge i Pull and remove the tension release Fig 5 12 pin ii Remove the protective sheet ie ua gt Tension y Release Pins Z Belt Cartridge Fig 5 13 Push new belt cartridge along the guide into the printer body 8 Set the lock lever BC of both sides left and right 9 Close the front cover unit 0 Close the paper exit cover 1 Turn the power supply switch on Clear the code BC by CLEAR CARE l Q mida DOE Fig 5 14 3 The code BC disappears and the TAE EA warming up process starts Lock Lever Fig 5 15 5 2 2 Replacement of Fusing Unit Fig 5 16 5 20 1 Criterion of Replacement Fusing unit should be replaced with new unit according to the periodical maintenance cycle set out in the Table 7 1 When time is due for replacement of fusing
79. OR LASER PRINTER 4 Layout of Left Side ILLUST Number panic ornate Parts Code 2 71 MCTL P W B 126171 High Voltage Unit HVU 126174 Power Supply Unit EC 126146 Power Supply Unit US 126147 Fuser Connector 126150 Cooling Fan Motor 126163 Interlock Switch 126817 Toner Sensor Ass y P W B 126169 IOD2 P W B 126173 Q ty Unit Remarks Fuser Controller Ozone Front Back Top U O O O O UU w l AAI TRIB Oooo 9 4 SPARE PARTS LIST for SL1 COLOR LASER PRINTER 5 Layout of Top Side and Rear Side Name of Parts Parts Code Q ty Unit Remarks Panel Button 126111 Panel P W B 126112 Waste Toner Feeder U 126125 Optical Unit 126139 Transfer Drum 126141 Erase Lamp 126144 Oil Sensor 126145 Belt Sensor 126168 OHP Sensor 126170 IOD1 P W B 126172 Paper Exit Roller 126118 Discharge Brush 123842 Transfer Unit 126135 Paper Feeding Roller 126142 Separator Pad 123825 Paper Exit Unit 126115 300 000 images PBS E4SEN Every 120K pages Every 120K pages O U U O wow oloo w gt OO U a ee 9 5 SPARE PARTS LIST for SL1 COROR LASER PRINTER 6 Fuser Unit Parts ILLUST Name of Parts Q ty Unit Remarks Number Parts Code 3 30 Fusing Heater US 123857 Lamp and Holder Set Fusing Heater EC 123858 Lamp and Holder Set Fusing Heater JP 123856
80. Output 9 a5VeiR 425 oun e Tor when 2 45V2 5V 2 Output w sore Boa Ona s SOND SBC 11 HON N Pull iis ed 4 SGND EY m nd ts seva e porresponding 14 Test O2 S eels s raava aaay Supp owh 16 Test I1 Sed a ESO Td 18 Test O1 nds ee is Pann Pouer Ground 4 20 PGND DU type ground 21 PGND DT type ground 22 PGND DAY type ground 4 2 4 DC High Voltage Power Supply Unit D Output and Function Power Supply P S No Functi xd Name of P S Approx Output Voltage CHV 4 6kV 1 Charging HVRD6190 619V 2 First Transfer CBV 200V 900V Y M DBV A 200V 400V 3 Developing Bias CK DBV B 200V 400V 4 Second Transfer THV 400V 3 000V 5 Transfer Roller Cleaning THV 600V ACV 4 9KV 6 Paper Discharging DCV 200V 7 Drum Cleaning FCBV 200V 1 500V 4 53 vS v Layout of Connector Pin Assignment Connector Pin Assignment BCN1 Manufacturer MoLex Type 53313 1815 1 24v n 24V n 2 PGND PGND 5 ACVON N AC Output ON Signal 6 PWMON N PWM Control On Signa 2 cevewnen cv ewm conoi Soa o THVRONN mvoNSma o 11 DBVYMPWM N DBV PWM ControlSignal 12 THVPWM N THV PWM Control ON Signal FCBVPWI FCBV PWM Control Signal 16 TH1 Thermistor Temperature Sensor Signal BCN2 Manufacturer MoLex Type 53324 0410 Thermistor1 FUCHKGND
81. Panel Main Switch Front Cover Paper Exit Cover Paper Exit Unit 7 1 5 Side Cover R 7 1 2 iFront Cover Unit j Paper Cassette Base Cover R 7 1 9 Front Face Cleaner Cover Side Cover LU Rear Cover U 7 1 7 Rear Cover L 7 1 6 Rear Cover 7 1 8 Back Face 7 3 Side Cover L 7 1 3 Interface Connector Box Base Cover L 7 1 10 7 1 1 Upper Side Cover LU Tools D Phillips Screwdriver 2 Disassembly Procedures D Open the paper exit unit 2 Remove the set screw BT4X 8 of side cover LU TN S Pressing the exterior of the oa side cover L unlock the interlock three locations with the side cover LU Paper Exit Cover Assembly Procedures D Prepare a new side cover LU 2 Assemble the side cover LU according to the reverse order of disassembling Precautions Interlock Side Cover L Fig 7 1 b 7 4 7 1 2 Side Cover R Tools D Phillips Screwdriver 2 Disassembly Procedures O D Open the front cover unit 2 Remove the set screw BT4 X 8 1 pc of side cover R at the rear side Fig 7 3 S Slide the side cover R to the arrow direction Fig 7 4 Remove the side cover R Side Cover R Assembly Procedures D Prepare a new side cover R 2 Assemble the side cover
82. Paper transport system consisting of the following 5 five functional parts picks up a paper from the paper cassette separates the transported paper from the transfer drum and exits it from the printer body after fusing the toner image on the transported paper Paper Cassette Transport Part Paper Discharger Part Fuser Part Paper Exit Part 4 1 ov Paper Exit Unit Transfer Unit AC Discharger Unit Transfer Roller Resistration Roller Transport Roller Paper Exit Paper Discharger Second Transfer Drum Cleaner Unit Transfer Drum Erase Lamp Drum Cleaning Operation Fst Transi Cleaning ye Developer Motor E Toner Cartridge QD Cevennen M Fig4 1 DC Charger Paper Feed Paper Cassette I F Controller l Optical Unit MCTL I F Control Sequence Control Laser Control LD SCN 5 Control System Control system consisting of the following 4 four control parts runs the printer by processing the interface signals transmitted from the Host and each systems such as the print transfer optical transport system Sequence Control Laser Control Fusing Temperature Control Interface Control 2 Basic Mechanism of Color Printing D Principle of Color Printing Color printing is made through the subtractive process by combining the three primary colors yellow
83. R i Let the lock projection of side cover R inside meet the another lock recess of engine side Install the side cover L ii Let the lock projection of side cover L inside meet the another lock recess of engine side 3 3 Assembly Procedures 4 Relocation of Printer D Whenever the printer is relocated it requires more than two adults to move the printer as shown below Printer Engine Since the printer with the LFU installed weighs approximately 40kg do not attempt to move the printer by yourself e In case the printer and the LFU is relocated individually separately make sure to disconnect the connection of LFU signal connector prior to lifting the printer engine from the LFU 19 4 Test Drive and Test Print For the details of test drive and test print see the chapter 4 of Operation Manual Paper Feeding From Lower Cassette 1 Load papers only to the paper cassette of LFU 2 Implement the test print 20 5 Clearance of Paper Jam 5 1 Paper Feeding Jam CD Pull out the paper cassette L Remove the paper remaining inside of engine 8 Open up the transfer unit and confirm no remaining paper 4 Press the clear key 5 2 Inner Jam amp Outer Jam Both inner jam and out jam is a jam occurring inside the printer engine For details of the inner jam and outer jam see the chapter 6 2 and 6 3 of Operation Manual 21 6 Peri
84. R according to the reverse order of disassembling Precautions Front Cover Unit Side Cover R Fig 7 2 b 7 1 3 Side Cover L Tools D Phillips Screwdriver 2 Disassembly Procedures CD Open the paper exit unit 2 Remove the side cover LU See the item 7 1 1 S Remove the set screw BT4X8 2 pcs of side cover L 4 Remove the side cover L Slowly pull up the side cover L and unhook the hook from the top cover Assembly Procedures D Prepare a new side cover L 2 Assemble the side cover L according to the reverse order of disassembling Precautions 7 6 7 1 4 Top Cover Tools D Phillips Screwdriver 2 Disassembly Procedures D Open the paper exit unit and the front cover Unit 2 Remove the side cover LU See the item 7 1 1 S Remove the side cover L and side cover R See the item 7 1 2 and 7 1 3 Remove the lock lever BC provided for the belt cartridge e Top Cover Remove the set screw BT4X 8 SS ap 3 pcs of top cover Top sidex2 TE l and Right side X 1 SS Remove the connector of operator NYY panel s WD Slightly lift up the upper side of top cover Se gt Pull the top cover toward you and eZ unhook the hook from the frame Remove the panel assembly from Fig 7 4 a th
85. Reset the OPC belt cartridge properly 2 Replace the OPC belt cartridge with a new cartridge 3 Replace the cleaning brush with a new brush 4 Replace the Drum cleaner solenoid 8 54 No 19 Mottle Phenomenon Variation of the optical density is found in the image as shown in the print sample of upper right corner Main Causes 1 Transfer unit is not fixed in place 2 Assembly of the transfer roller is inaccurate 3 THV output of DC high voltage unit is not normal 4 Failure of the toner cartridge 5 Deformation of the print paper Drum Cleaner Fusing Unit Transfer Unit Paper Discharger Unit Transfer Roller Transfer Drum Paper Feeding Roller Countermeasures 1 Confirm if the transfer unit is firmly locked or not 2 Confirm if the transfer roller is properly installed or not 3 Replace the DC high voltage unit with a new unit See Section 7 2 6 4 Replace the toner cartridge with a new cartridge 5 Replace the papers with new papers 8 56 No 20 Residual Image PE Moe amp TPE Mottl Phenomenon Image of the preceding page appears every other page as shown in the print sample of upper right corner Main Causes 1 Cleaning failure due to the lifted cleaning brush of drum cleaner 2 Contact failure of the drum cleaner s bias pole 3 Failure of DC high voltage unit Drum Cleaner Fusing
86. SSSSQURGIS RU Edi E EE RS 8 61 8 37 No 1 Background Phenomenon Background is smeared due to the toner spread as shown in the print sample of upper right corner Main Causes 1 Too small toner mass amount and charging amount in the development process 2 Insufficient contact of the developer roller s bias pole 3 Life or failure of the belt cartridge 4 Failure of the high voltage power supply unit HVU OPC Belt Cartridge Countermeasures 1 Replace the toner cartridge See Section 3 3 2 Confirm if the developer bias pole is deformed or not 3 Replace the belt cartridge See Section 5 2 1 4 Replace the high voltage power supply unit HVU See Section 7 2 6 8 38 No 2 Missing Image at Edge Phenomenon There are missing or peeling found in the image at edge as shown in the print sample of upper right corner Main Causes 1 Too small toner mass amount and charging amount in the development process 2 The belt is deformed as waving OPC Belt Cartridge Countermeasures 1 Replace the toner cartridge with a brand new toner cartridge 2 Replace the belt cartridge with a brand new belt cartridge 8 39 No 3 Jitter Phenomenon Uneven optical density appears periodically in the horizontal direction of printed image as shown in the print sample of upper right corner Ma
87. Standards Ozone filter must be replaced with new filter yearly otherwise it may cause strong odor which will likely have ill effects to bronchial tubes Therefore this periodical replacement with new filter must be strictly respected Documentation Disclaimer HITACHI LTD MAKES NO REPRESENTATION OR WARRANTIES OF ANY KIND WHATSOEVER WITH RESPECT TO THE CONTENTS HEREOF AND SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE TL SAFETY INSTRUCTIONS Safety Instructions 1 1 Safety Principle 1 2 3 4 5 Before starting your operation read this Manual thoroughly Especially read the safety instructions of this section carefully and understand the contents Perform all the operations by following the procedures described in this Manual Follow all the cautions and warnings set out in the procedures and in safety labels affixed on the machine Failure to do so may result in the human injuries or equipment damages Perform only the procedures explained in this Manual Refrain from opening or touching any portions that are not related with your operation Repair and replacement of parts should be performed by trained and qualified persons only Operator should not attempt to do such repair or replacement works It must be appreciated that above mentioned cautions and warnings do not cover everything because it is impossible to guess or evaluate all t
88. TL P W B YES Job is complete MCTL IOD1 Drum Cleaner 24V 1 Solenoid FESLON N fes ve 8 Error Code E7 Concerned Part Cleaner Clutch Confirm the connection of a cleaner clutch connector Is ECN11 of IOD2 properly connected with a connector of the clutch NO Connect them properly Is ECN2 of IOD2 properly connected with DCN9 of IOD1 Is ECN1 of IOD1 properly connected with 11CN of MCTL P W B S Is E7 error cleared FED NO YES Check the voltage iFBCLON N P RUN Is a single voltage between ECN11 3 and ECN2 8 of IOD2 to be a trailing edge XES Replace the cleaner clutch Is a single voltage between ECN2 1 and 12 of IOD2 to be a rising edge Replace the IOD2 P W B LT Is a single voltage between ECN1 35 and 1 of IOD1 to be a rising edge YES Replace the IOD1 P W B NO Is E7 error cleared NO Replace the MCTL P W B YES Job is complete MCTL IOD1 SGND 35 FBCLON P 4c Job is complete Cleaner Clutch Error Code E8 Concerned Part Fuser Clutch FUCL Confirm the connection of a fuser clutch connector Is ECN9 of IOD2 properly connected with a connector of the clutch Connect them properly Is ECN1 of IOD2 properly connected with 11CN of MCTL P W B YE Is E8 error cleared 2 Job is complete YES Check the voltage iFUCLON N P NO f Is a single voltage between ECN9 3 and ECN2 8 of IOD2 to be a trailing edge XES Replace the cleaner clutch FUCL ls a single voltage
89. Toner Cartridge Is the Toner Cartridge replaced No Replace the identified as identified on the panel Toner Cartridge Confirm Toner Sensor When the identified Toner Cartridge is not mounted is the message 16 ALIGN TONER GG indicated on the panel No Check the connection of Harness Connector and replace Toner Sensor Is Error Code 13 cleared Yes Complete Message CHECK WASTE TONER is indicated again Confirm the installation of Waste Toner Pack Is Waste Toner Pack installed properly Install the pack properly Confirm Waste Toner Pack Sensor Switch Is the Sensor Switch damaged No Replace the Sensor Switch gt Yes Harness Connector of Sensor Switch is disconnected Connect the connector Replace IOD2 P W B Is Error Code 14 cleared Yes Message CHECK FUSER OIL is indicated again Implement printing more than 30 pages to confirm clearance of CHECK FUSER OIL Confirm the installation of Oil Bottle No Is Oil Bottle fixed by the lever Fix Oil Bottle by the lever No Yes Is Oil supplied from Oil Bottle Replace the Oil Bottle Is the projection of Oil Pan damaged Confirm Oil Sensor Is the Fusing Unit properly installed Reset the Fusing Unit No Replace Oil Sensor Is Error Code 14 cleared No Check the Harness amp Replace IOD1 P W B Is Error Code 14 cleared Yes Message CH
90. Tools Side Cover LU D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the side cover LU See the item 7 1 1 2 Remove the top cover See the item 7 1 4 S Remove the set screw ST3X 6 3 pcs of shield upper 4 Remove the shield upper S Disconnect all the harness connectors 14 pcs connected with the IOD1 P W B Remove the set screw ST3X 6 6 pcs of IOD1 P W B Remove the IOD1 P W B Side Cover L Top Cover ie SS Upper Shield Cover Ob Doms Connecter gS e S i ao Sy Rack Sp SPAA l OD1 P W B Fig 7 14 Assembly Procedures D Assemble a new IOD1 P W B 2 After above assembling follow the reverse order of above disassembling for set up Upon completion of above set up connect the power supply cable Turn on the power switch of the printer Execute the test print in Service Mode Confirm the operation and print quality of printer o o amp Q Precautions D When replacing the IOD1 P W B pay a good attention so that no damage is caused due to electrostatic 7 18 7 2 3 IOD2 P W B with the base Tools 1 Phillips Screwdriver 1 2 Disassembly Procedures D Remove the side cover R See the item 7 1 3 2 Disconnect all the harness connectors 15 pcs connected with the IOD2 P W B 3 Remove the C ring of re
91. able Turn the power supply switch ON Execute the test print in Service Mode D Confirm the operation and print quality Fig 7 20 Precautions D Erase lamp has the directional characteristics If installed to the wrong direction the transfer drum may be damaged Left Side 3 5 3 Right Side as viewed from the front side 7 26 7 3 Replacement of Motor Unit Layout of Motors 7 3 6 7 3 4 Controller Fan Fig 7 21 7 27 7 3 1 Main Motor MM Main Gear Unit Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the belt cartridge 2 Remove the side cover R See the item 7 1 3 S Remove the base cover R See the item 7 1 9 4 Remove the IOD2 P W B base See the item 7 2 3 Disconnect all the harness connector connected with the main motor by removing the set screws ST3 X 6 3 pcs After this disconnection the main motor assembly can be removed Remove the set screws BT4 x 8 3 pcs of TR side cover to be removed D Remove the the set screws ST3 X 6 3 pcs of stay R to be removed 8 Loosen the set screw ST3 X 6 1 pc of fan case ozone fan Remove the ozone fan duct 10 Remove the paper feeder clutch See the item 7 4 1 Remove the set screws ST3 X 6 4 pcs of main gear unit 12 Pull out the main gear unit from the frame 3 Remove the set screws ST3
92. age occurs Set Screw S Metal Fixture TO Fig 5 18 5 18 Sequence of Replacement D Prepare new fusing unit prior to starting the replacement work 2 Remove the roller tension release piece of left and right S Install the oil bottle and cleaning roller to the fusing unit Roller tension release piece Fig 5 19 Sequence of Assembling CD Install new fusing unit to the printer i After setting the fusing unit in place lightly press down the unit to firmly connect to the connector of base i ii Screw the fixture of fusing unit from Set crew nd the transfer unit side Metal Fixture om Fig 5 20 N PRECAUTION When replacing the fusing unit take time with great care to complete the job Application of strong force to the fusing unit may result in the failure of fusing unit and other parts 2 Upon completion of warming up process clear the code FU by CLEAR CARE mode 5 19 5 2 3 Replacement of Transfer Roller 1 Criterion of Replacement Transfer roller should be replaced with new discharger unit according to the periodical maintenance cycle set out in the Table 7 1 When time is due for replacement of transfer roller the warning code OW appears in LCD of the operator panel 2 Purpose of Replacement To prevent the transfer efficiency from declining due to deterioration of the transfer roller 3 Necessary tools and re
93. aning efficiency 6 33 6 5 3 Confirmation and Setting of Total Number of Printouts Total number of printouts is stored in the RAM Confirmation and setting of total number of printouts can be confirmed and reset by manipulating the key on the operator panel 1 Purpose Total number of printouts shall be reset when changing the MCTL PWB or executing the NVRAM INITIAL 2 Procedures of Setting CD Execute 47 TOTAL PAGE in the Factory Mode 2 Reset the total number of printouts 8 After the above setting execute 34 TOTAL PAGE to confirm that the desired number of printouts is now set 6 5 4 Setting of Number of Images Per Each Color Number of printouts of each colors 4 colors is stored in the RAM Confirmation and setting of number of images per each color can be confirmed and reset by manipulating the key on the operator panel 1 Purpose Number of images per each color shall be reset when changing the MCTL P W B or executing the NVRAM INITIAL 2 Procedures of Setting D Execute 48 EACH IMAGE in the Factory Mode 2 Reset the number of printouts per each color S After the above setting execute 35 EACH IMAGE to confirm that the desired number of images is now set 6 34 6 5 5 Initial Setting of RAM Implement the initial setting at the replacement of MCTL P W B after clearing the contents of RAM 1 Purpose Number of images per each color shall be reset when chang
94. aper exit cover See the item 7 1 5 2 Disconnect the harness connector connected to the the paper exit sensor PT2 Remove the paper exit sensor from the paper exit guide paper exit stay Assembly Procedures D Install a new paper exit sensor to the paper guide 2 Connect the harness connectors with the paper exit sensor 9 After the above follow exactly the reverse order of disassembling procedures Release arm Paper Exit Cover Precautions Spring Fig 7 41 7 5 4 Paper Empty Sensor PE OHP Sensor OHP Tools D Phillips Screwdriver 1 Disassembly Procedures D Remove the transfer unit See the item 7 6 1 2 Remove the set screw ST3 X6 2 pcs of paper guide L 3 Remove the paper guide L 4 Remove the set screw ST3 X6 2 pcs of paper guide assembly UL 5 Remove the connector connected with the sensor 6 Remove the paper guide assembly UL 2 Remove the paper empty sensor PE from the paper guide assembly UL or remove the set screw BT3X8 2 pc of OHP sensor OHP from the paper guide assembly UL 8 Remove the OHP sensor OHP Assembly Procedures D Install a new paper empty sensor PE or a new OHP sensor OHP to the paper guide assembly UL 2 After the above follow exactly the reverse order of disassembling procedures Precautions 7 52 Paper Guide paper
95. ar solvent for cleaning the registration roller Transfer Roller Paper Discharger Transfer Unit Registration Roller Registration Roller Transfer Unit Fig 5 1 Fig 5 2 5 7 2 Cleaning of Transfer Roller Transfer Roller shall be cleaned according to the periodic maintenance cleaning cycle set out in Table 5 3 Tools to be prepared D Cotton cloth 2 3 pieces Cleaning Procedures Turn off the power supply and unplug the power supply cord 2 Open the transfer unit 9 Using a cotton cloth clean the transfer roller N CAUTION Strictly refrain from using alcohol or similar solvent for cleaning the transfer roller Transfer Unit Registration Roller Transfer Unit Fig 5 3 Fig 5 4 5 8 3 Cleaning of Paper Discharger AC Charger Paper Discharger shall be cleaned according to the periodic maintenance cleaning cycle set out in Table 5 3 AC Charger Transfer Unit iHolder j Tools to be prepared D Cotton cloth 2 3 pieces 2 Cotton applicator 2 3 pieces gt Cleaning Procedures Locking Craw D Turn off the power supply switch and unplug the power supply cord 2 Open the transfer unit 3 Remove the paper discharger unit i Sliding AC charger to the arrow direction release it from the locking craw ii Pulling up AC charger remove it from the transfer unit holder 4 Clean the charger case with a c
96. ation environment of the printers that have been packed according to Hitachi specification However this section does not cover the belt cartridges toner cartridges and developer cartridges In particular since consumables such as toner etc are packaged the following environmental conditions should be respected During transportation strictly refrain from leaving the goods on the ground or under the blazing sun Normal Condition 0 C 35 C 32 F 95 F Temperature High Temperature 35 C 40 C 95 F 104 F Severe Condition Low Temperature 10 C 0 C 14 F 32 F Humidity 10 90 RH Period of Storage One Year Other No Condensation Atmosphere 613 1 067hpa 460 800mmHg The period under the severe condition should not be continuous but assumed as accumulation of intermittent time However the accumulation of intermittent time should not by any means exceed 48 hours at maximum Note Normal condition should occupy more than 90 of total storage period Sever condition should be less than 10 of total storage period 2 6 3 Mstan 2c ock o soca eco Son e EH E ur Ee Se UG 3 1 3 1 Conditions for Installation 3 1 22 BMnBaclirid asi e du p de dx E aU ERE RE 3 2 3 2 1 Unpacking of Printer nk 3 2 3 2 2 Unpacking of Starter Kit 3 4 3 3 Installation Work css sek Sew ERERREEES 3 5 3 3 1 Installation of toner cartridge to t
97. by CLEAR CARE mode 5 23 5 2 5 Replacement of Drum Cleaner Fig 5 24 and 5 25 1 Criterion of Replacement Drum cleaner should be replaced with new drum cleaner according to the periodical maintenance cycle set out in the Table 7 1 When time is due for replacement of drum cleaner the warning code OW appears in LCD of the operator panel 2 Purpose of Replacement To prevent the cleaning efficiency from declining due to deterioration of the drum cleaner 3 Precaution N PRECAUTION When installing the drum cleaner firstly connect the bearing and the bias pole Reconfirm this connection prior to starting the installation 4 Necessary tools and replacement materials D Two or three pieces of cotton cloth for cleaning 2 Drum cleaner one unit 5 Work Procedures Sequence of Disassembling D Push the push button top of power supply to turn the power off 2 Open the paper exit cover 5 24 Sequence of Replacement CD Remove the cleaner cover Fig 5 24 Cleaner Cover 2 Holding the knob and band located on the top of drum cleaner remove the drum cleaner i Turning the handle of center part to the arrow direction dislocate the drum cleaner shaft from the bearing Fig 5 25 a 9 Clean the area where the drum cleaner shall be mounted Install a new drum cleaner to the printer Fig 5 25 b Fig 5 24 i Connect the shaft of cou
98. can be confirmed Procedure Step Description of Procedures Message in LCD Press Select key after selecting FU CHECK a gt b Upon energized fuser unit starts the heat up process and checks the availability of fuser oil 2 If the oil is available in the fuser unit GOOD is displayed in the LCD otherwise FAIL b Press the Clear key to stop the FU CHECK mode b c 39 FACTORY MODE FU CHECK 43 FU CHECK OIL GOOD 39 FACTORY MODE DP CHECK 6 20 43 MARGIN ADJUST The position of top margin and left margin can be confirmed and adjusted within the range between 3 5mm max and 3 5mm max Procedure Step Description of Procedures Message in LCD Press Select key after selecting MARGIN ADJUST a gt b Using Scroll key select either TOP or LEFT and then press Select key Ex Top b gt c Margin can be adjusted 3 5mm max to both end left and right by 0 5mm pitch against the reference value 0 Using Scroll key select amount of adjustment by picking up a number displayed in Screen c or d In this instance the amount of adjustment selected will be displayed at the upper right corner of Screen c or d After confirming the desired amount of adjustment displayed press Select key to set the adjustment Press the Clear key to terminate MAR
99. ce cleaning cycle set out in Table 5 3 Tools to be prepared D Cotton cloth 2 3 pieces 2 Cotton applicator 2 3 pieces b In Anim Boe DANGER LI LERE MADUM H EN mot biti oe ID ii WORSICHT NUCETREAU NEETA AE REDICILNG TENTE INEO AH EEEN LEI ENCET Di TIRAS iia Cleaning Procedures renim sacos um mener x ue reris LE TPE EMETA Hj BAD BH mem Pere F hENEEEREGISCHELTTAU MAR Turn off the power supply switch um Laser WARNING Label Open the paper exit cover Open the front cover unit Remove the toner cartridge Remove the belt cartridge Holding the ear of dust proof glass remove the dust proof glass from the optical unit Clean the surface of dustproof glass with a cotton applicator Having the dust proof glass meet the mark N77 of OU cover push the dust proof glass in until it is firmly locked so that it will not be floated N CAUTION Strictly refrain from using any alcohol or similar solvent for cleaning the dustproof glass otherwise it will be a cause of the image failures SISGHOHVS Laser WARNING Label Cleaning Area Dustproof Glass Optical Unit Fig 5 8 5 11 6 Cleaning of Printer Interior Printer Interior bottom shall be cleaned according to the periodic maintenance cleaning cycle set out in Table 5 3 CAUTION Prior to cleaning the inside of printer protect the transfer drum with paper so that the mouth of cleaner will not direct
100. cess rotates as contacting and synchronizing with the transfer drum 2 OPC belt has been biased to the potential of CBV V Potential of the transfer drum is nearly GND S Toner on the OPC belt is moved onto the transfer drum due to the difference of potential between the OPC belt and transfer drum 4 Toner that has been developed by each color is moved from the OPC belt onto the transfer drum and two color toner image is overlapped on the transfer drum Upon completion of the drum transfer process the toner image is transferred onto a paper in the process of paper transfer Residual Charge OPC Belt Residual Toner lt a ads Belt Cleaning Discharai Brade DrumTransfering eee en Fig 4 17 4 16 Belt Discharging Erase Lamp Belt Discharging Process means that upon completion of the drum transfer process LED light is radiated on the OPC belt prior to cleaning the belt to discharge the residual charge for electrical cleaning 1 Structure of Erase Lamp D Erase lamp is located as shown in Fig 4 7 2 Luminous source of erase lamp is the 24 pieces of light emitting diodes LED 2 Process of Discharging Fig 4 18 D Though a toner image is transferred to the transfer drum in the drum transfer process there is still a residual charge on the OPC belt 2 Residual charge VR V on the OPC belt is discharged by the radiation of eras
101. charger unit of transfer unit is not functioning 3 Transfer unit is not locked properly 4 Fuser roller is deformed or reaches to the end of life 5 One side of fuser unit is lifted when installed Fusing Unit Transfer Unit Paper Discharger Unit Transfer Roller Transfer Drum Paper Feeding Roller Countermeasures 1 Use a recommended paper or fresh paper from a paper bag 2 Confirm that the paper discharger unit is properly installed to the transfer unit and also functioning normally 2 1 Push the transfer unit and ensure the locking at both sides right and left See Item 3 of Section 5 1 2 and Section 5 2 4 3 Confirm that the fusing unit is installed properly and fixed with set screws 4 Replace the fusing unit with a new unit 8 42 No 6 White Line T Phenomenon Vertical white line appears in the specific color area when test printed in the four color mode Stripe Mode as shown in the print sample of upper right corner Main Causes 1 Foreign particles adhere to Developer Roller of specific color in question 2 Developer Roller s surface is dameged OPC Belt Cartridge Foreign Particles Toner Cartridge Toner Holder Developer Blade Countermeasures 1 Implement the test print 2 Confirm the toner cartridge of specific color in question that has caused the white line 3 Remove the foreign particles adhering to the dev
102. cover S Remove the rear cover Assembly Procedures D Install a new rear cover 2 Plug the power cable to the inlet Precautions Q Paper Exit Cover Rear Cover U Rear Cover L Power Cable Fig 7 8 7 11 7 1 9 Base Cover R Tools D Phillips Screwdriver 2 Disassembly Procedures D Remove the side cover R See the item 7 1 3 2 Remove the set screw BT4X 8 2 pcs of base cover R S Remove the base cover R from the base i Pull and remove the front side ii Pull and remove the rear side Assembly Procedures Base Cover R D Prepare a new base cover R 2 Assemble the new base cover R according to the reverse order of disassembling i Insert the front side of base cover R ii Insert the rear side of base cover R Precautions When assembling the base cover insert the leading edge of base cover R into the hook provided at the bottom left and right of the base plate Have the projecting part of base cover R meet the hole of base plate bottom Base Plate Hole Projecting Part E Base Cover R Hook 7 1 10 Base Cover L Tools D Phillips Screwdriver 2 Disassembly Procedures D Remove the side cover L See the item 7 1 3 Remove the set screw BT4 x 8 2 pcs of base cover L
103. de Fuser roller side 400W Length 342mm Back up roller side 300W Length 332mm 7 80 Back up Roller Pa Fuser Roller Terminal L Fuser Lamp 300W Fuser Lamp 400W Terminal L Fig 7 60 7 81 7 7 2 Fuser Roller Tools D Phillips Screwdriver 1 2 Disassembly Procedures See the layout of fuser unit parts D Remove the fusing heater lamp 400W See the item 7 7 1 2 Remove the set screw FST3 X10 1 pcs of F terminal R and remove F terminal R S Remove the set screw ST3X6 2 pcs of oil pan Remove the oil pan Remove the set screw ST3X6 2 pcs of frame assembly Open the upper face of frame assembly D Remove the fuser roller from the frame Assembly Procedures D Install a new fuser roller to the frame 2 After the above follow exactly the reverse order of disassembling procedures Precautions Do not touch the surface of fuser roller with bare hands Do not let any foreign particle such as debris adhere to the surface of fuser roller Frame L Fuser Roller Fig 7 61 7 82 7 7 8 Back Up Roller Tools D Phillips Screwdriver 1 2 Disassembly Procedures See the layout of fuser unit parts Remove the fusing heater lamp 300W See the item 7 7 1 Remove the set screw ST3 X6 2 pcs of oil pan Remove the
104. e lamp s light prior to cleaning the belt 2 Belt Cleaning Belt Brade Discharging Drum Transfering Erase Lamp Fig 4 18 4 17 Belt Cleaning Belt Cleaning Process means that the residual toner adhering to the OPC belt surface is mechanically scavenged 1 Structure of Belt Cleaning D Blade for the belt cleaning is located to the belt cartridge as shown in Fig 4 7 2 Process of Belt Cleaning Fig 4 19 D There is a residual toner on the OPC belt as it has not been transferred in the process of drum transfer 2 Residual toner is mechanically scavenged by the blade edge 3 Scavenged residual toner is collected to the waste toner pack by the waste toner feeder 2 Belt Cleaning Belt Brade Discharging Drum Transfering Erase Lamp Fig 4 19 4 18 Second Transfer Paper Second Transfer Process means that the toner image on the transfer drum is transferred onto the transported paper 1 Structure of Belt Cleaning D Transfer roller for the second transfer is located as shown in Fig 4 7 2 Transfer roller is normally separated from the transfer drum 8 Transfer roller is positively biased by the power supply THV 4 Transfer roller contacts to the transfer drum in the second transfer process Transported paper passes between the transfer roller and transfer drum Process of Belt Cleaning Fig 4 20
105. e H2 H3 and H4 errors cleared YES Is the fuser connector damaged Replace the connector NO YE Is there any contract failure of the lamp holder 5 Replace the lamp and lamp E Replace the fuser unit Is the heater wiring cut or damaged Lm Replace the heater E NO YES Are H2 H3 and H4 errors cleared NO Replace the power supply unit LVPS Are H2 H3 and H4 errors cleared Are H2 H3 and H4 errors cleared NO Replace the MCTL P W B Job is complete vE 8 L1 Beam Detecting Error j Concerned Part Optical Unit Confirm the connection of an optical unit connector NO Is the connector PDCN properly connected Cd Connect the connector properly Are the connector LCN1 and LCN of MCTL properly connected 7 Is L1 error cleared YES NO YES Replace the optical unit y Is L1 error cleared XES NO Replace the MCTL P W B Job is complete MCTL Optical Unit C Ge 8 NO Is the connector LCN3 properly connected Replace the optical unit Is L2 error cleared NO Replace the MCTL P W B Connect the connector properly Is L2 error cleared YES Job is complete Optical Unit 98 8 Confirm the connection of an optical unit connector Is th tor LCN3 ted s the connector properly connected C Is the connector PDCN properly connected Are the connector LCN1 and LCN properly connected ci Con
106. e Harness of PT1 Sensor Lever and Replace the IOD1 P W B Is Error Code 17 cleared Yes Complete 8 3 i Message MEDIA JAM OUTER is indicated again Confirm if there is any paper debris found in transfer unit paper exit unit or not Yes Is the paper debris is found in above units Remove the paper debris No Confirm the installation of Paper Exit Unit TES Check and Reset the PT2 Does PT2 Sensor Lever operate smoothly Sensor Lever No Replace PT2 Sensor Lever Yes Is Error Code 17 cleared Check the Harness of PT2 Sensor and Replace IOD1 P W B NO Is Error Code 17 cleared Message MEDIA JAM DRUM is indicated again Confirm if there is any paper debris found at transfer drum area or not Yes Is there paper debris on the transfer drum Remove the paper debris No Check the Harness of Drum Jam Sensor DPJ and Replace the Drum Jam Sensor Yes Is Error Code 17 cleared No Replace IOD1 P W B No Is Error Code 17 cleared Yes Message CLOSE PANEL FRONT TOP is indicated again Confirm if Front Top Cover is closed or not No Is Front Top Cover locked firmly Open and close the Cover Yes Yes Is Front Cover Lock Lever deformed No Is the Top Cover or Switch Actuator damaged or deformed No Confirm the Interlock Switch DSW1 DSW2 Yes Is the Interlock loose Remedy the Interlock to be tight No Yes Is the Harness disconnected Connect the Harness properly No Re
107. e cleaning to the following parts 1 Registration Roller 2 Transfer Roller 3 Paper Discharger 4 Belt Cartridge 5 Dustproof Glass of Optical Unit 6 Printer Interior N WARNING Before starting any maintenance work make sure to unplug the power supply cord from the outlet There is a risk of electric shock in working while the printer is energized 5 4 G G Periodic Maintenance Cleaning Work Table 5 3 1 2 Cleaning Work Cleaning Cycle 1 Time 2 Skill 3 No Name of Parts i Description Page Condition or Case minute Level e Defective image l 1 Open transfer unit 1 is Istration P 57 Smeared paper 2 A B or oller 2 Clean rollers and neighbor using a dry User cloth Periodic maintenance Damaged image 1 Open transfer unit 2 Ed E 5 8 Smeared paper 2 fee 2 Clean rollers and neighbor using a dry EN f cloth e Periodic maintenance 1 Open transfer unit e Damaged image Paper i 3 Dishaning 2 Remove paper discharging unit 5 9 e Paper jam 3 Ree ser Roler 3 Clean corona wire amp case using cotton e Periodic applicator and dry cloth maintenance 1 Remove belt cartridge Defective print A B 4 a a 2 Clean toner around belt cartridge and 5 10 quality 3 Charger unit artriage cleaning Blade TOR to be either 3 Clean the corona wire with the wire blush EE B or C 9 G Periodic Maintenance Cleaning Work
108. e electrode meet the installation hole of PWB fix the both by screwing 2 After the above follow exactly the reverse order of disassembling procedures Upon completion of the installation connect the power supply cable 4 Turn the power supply switch ON Execute the test print in Service Mode Confirm the operation and print quality 7 24 Precautions N WARNING High Voltage Unit generates high voltage BKV You may get electric shock if you touch the unit while it is powered on Therefore turn on the unit only after having installed the side cover L Shield Cover A Side Cover LU Controll Fan Ass y Side Cover L LEN High Voltage Power Supply Top Cover High Voltage Power Supply Pear Side Power Supply Base Cover L Fig 7 19 7 25 7 2 7 Erase Lamp Tools Phillips Screwdriver 1 2 Disassembly Procedures D Remove the drum cleaner assembly See the item 7 6 3 2 Disconnect the harness connectors connected to the erase lamp S Remove the erase lamp from the holder Holder iBack Side f Assembly Procedures Erase Lamp D Install a new erase lamp 2 Install the erase lamp to the base frame S After the above follow exactly the reverse order of disassembling procedures Upon completion of the installation connect the power supply c
109. e operator panel Ober Panel One BT4X8 screw to be removed E Assembly Procedures D Prepare a new top cover Connector Assemble the top cover according to the reverse order of disassembling Fig 7 4 b Precautions 7 7 7 1 5 Paper Exit Cover Tools D Phillips Screwdriver 1 2 Release arm Fan Case Ass Harness Cover Disassembly Procedures Paper Exit Cover D Remove the side cover LU See the item 7 1 1 2 Remove the side cover L See the item 7 1 2 S Remove the side cover R See the item 7 1 3 4 Remove the top cover See the item 7 1 4 Paper Exit S Remove the Shield Cover A Inner Cover d assembly Set Screw See the item 7 2 1 Remove the set screw 2 pcs of paper exit unit s shaft D Remove the paper exit inner cover by removing the set screws BT3X8 4 pcs release arm hook R amp L and spring 8 Unscrew the set screw ST3X6 and then remove the harness cover 9 Remove the fan case assembly 0 Remove the set screws BT3 8 4 pcs of paper exit guide unit f Remove the paper exit guide unit from the cover Release arm Fig 7 5 a Assembly Procedures Hook L D Prepare a new paper exit cover Z2 Assemble the release arm hook R amp L and spring as shown in Fig 7 5 b S Assemble according to the reverse order of disassembling Spring Fig 7 5 b
110. e other pieces according to the reverse sequence of disassembling 25 7 4 Paper Feeding Roller LFU Separator Pad Necessary Tool Q Phillips Screwdriver 1 and 2 Disassembly Procedures 96 606000 Remove a side cover R No tool is necessary Remove a back cover LFU Remove screw BT4 X8 1 pc Remove a paper guide L Remove screws ST3X 6 2 pcs Remove a paper guide UL Remove screws ST3X6 2 pcs Remove a harness OHP sensor paper sensor connected to a paper guide UL Sliding a paper feeding roller to the right side remove it from a shaft Pull up a separator pad and tale it out Assembly Procedures Q Assemble a new separator pad Assemble a new paper feeding roller Assemble other pieces according to the reverse sequence of disassembling Do not touch surface of paper feeding roller and separator pad 26 8 Main Parts of Lower Feeder Unit See attached drawing 5 for the details of structure Main Parts List No Name of Parts Illust No Parts Code Function NEL eR sense the availability of Paper Sensor 126167 paper To sense the size of paper Paper Size Sensor 126166 in the paper cassette To sense the availability of B OHP Sensor a 126170 OHP sheet To d er feedin Paper Feeding Clutch 126152 o olera pap ds roller To automatically feed Paper Feeding Roller 126142 papers from cassette To separate papers for the Separator Pad 1
111. eat lamp if the temperature control circuit should break down When the temperature fuse is molten the printer will stop the operation 4 Safety Control by Temperature Control Signal HO H2 H3 H4 When THERR signal is inputted the operator panel indicates HO and the printer will stop the operation If the temperature of fusing unit will not reach to the required point T1 after the elapse of certain time the operator panel indicates H2 and the printer will stop the operation If the Heater On signal is still continued after the elapse of certain time the operator panel indicates H3 and the printer will stop the operation If the temperature within the fusing unit becomes unusually hot and when ACOFF signal is inputted the operator panel indicates H4 and the printer will stop the operation 4 46 5 Interface Control D General a Interface Type Video Interface handles image data and corresponds to print dots but does not accumulate images with the buffer Video signals of the inputted image data switches the semiconductor laser diode to form a print image b Interface Connection Panel Laser Printer Controller om Hitachi Color Laser Printer SL1 Fig 4 36 Interface Circuit Internal Connecting System Interface connector of the laser printer SL1 is connected to the host system as shown in Fig 4 36 4 47 c Interface Circuit Printer side
112. econfirm the installation status of the fuser unit This message will be automatically cleared by open amp close operation of the paper exit cover The message is cleared also by pressing the Clear Key CL ROLLER Message LED is lit e Cleaning roller is not installed Reconfirm 16 ALIGN FUSER the installation status of the cleaning roller This message will be automatically cleared x by open amp close operation of the paper exit OE ROCEEB T cover The message is cleared also by pressing the Clear Key 16 3 ALIGN TONER CG Engine is idling Message LED is lit 16 ALIGN S 5 Color of the incorrectly installed toner cartridge will be indicated as follows TONER CG 4 Y Yellow M Magenta C Cyan K Black Reinstall the toner cartridge correctly This message will be automatically cleared by open amp close operation of the front cover 16 4 Engine is standstill 16 ALIGN BELT CG Message LED is lit Belt cartridge is not installed Reconfirm the 4 installation status of the belt cartridge This message will be automatically cleared by open amp close operation of the paper exit cover or front cover 19 SLEEP MODE Engine is idling 19 SLEEP MODE 4 Message LED is lit This mode is cleared by sending WAKE UP command EC24 from LPC Printer is ready to print after the warming up process of engine 6 7 Code No Message in LC
113. ective Sheet 5 Remove the protective sheet from a new belt cartridge 6 Push the new belt cartridge into the printer along the guide of lock lever BC provided at both sides Belt Cartridge Fig 3 5 M Tension Y Release Pins 3 5 Push new belt cartridge along the Lock Lever BC guide of both sides into the printer 7 Set the lock lever BC 8 Close the paper exit cover 9 Close the front cover Fig 3 6 3 3 2 Installation of toner cartridge to the printer Fig 3 7 3 9 Refrain from holding a toner cartridge vertically otherwise it may adversely affect the print quality D Open the front cover unit 2 Holding a toner cartridge horizontally shake it to left and right for three to four times Remove a protective cover of toner cartridge 4 Push the new toner cartridge along the guide into the printer Installation order of toner cartridge in terms of color shall be Cyan C Magenta M Yellow Y and Black K 5 Close the front cover unit Front Cover Fig 3 7 3 6 3 3 3 Installation of Cleaning Roller and Oil Bottle Fig 3 10 3 13 Procedures of Installation Cp Open the paper exit unit Open the retainer lock lever of oil bottle and the cleaning roller S Install the oil bottle to the fusing unit amp Install the cleaning roller to the fusing unit Hold the cleaning roller with the retainer lock lever Close the paper exit c
114. ed ES Job is complete Replace the IOD1 Is E1 error cleared mU Replace the MCTL P W B YES Job is complete Zz z Job is complete Job is complete 61 8 z Concerned Part Main Motor MM l NO Does a belt cartridge rotate lightly p Replace the belt cartridge a Does a fuser unit rotate lightly Replace the fuser unit ES YES Confirm the connection of connector Is E2 error cleared Job is complete NO Is ECN12 of IOD2 properly connected with connector of DM1 2 Replace developer gear unit and motor Is ECN2 of IOD2 properly connected with DCN9 of IOD1 g Is ECN1 of IOD2 properly connected with 12CN of MCTL Is E2 error cleared XES Job is complete O ES Check the voltage 24V 1 and 5V 1 24V 1 Is the voltage 24V between MM1 4 and 5 ECN12 4 and 5 ECN2 5 and 8 MES Replace the main motor 5V 1 Is the voltage 5V between MM1 6 and 7 ECN12 6 and 7 ECN2 11 and 12 NE Is E2 error cleared YES Job is complete NO Replace the IOD2 Y MCTL YES MM1 Is E2 error cleared Job is complete 7 7 MMRDYNT Replace the IOD1 0 3 PGND 24V 1 SS EG SGND Is E2 error cleared Replace the MCTL P W B 9 9V 1 8 7 MMENC 7 PES 11 8 MMREV N 8 12 Job is complete 0c 8 Concerned Part Drum HP Sensor Is a belt cartridge properly installed NO YES Does a transfer drum rotate lightly Ne Confirm the connection of connector
115. eloper roller 8 43 No 7 White Line I aa Phenomenon Vertical white line appears from the leading edge to the trailing edge of printed image as shown in the print sample of upper right corner Main Causes 1 Dustproof Glass of Optical Unit is smeared with toner or foreign particles 2 Hairy foreign particles adhere to the laser beam opening of optical unit 3 There are foreign particles mixed in the toner cartridge OPC Belt Cartridge Toner Cartridge K Y M C Laser Beam Opening Optical Unit Paper Cassette Optical Unit Dustproof Glass Countermeasures 1 Clean the dustproof glass 1 1 Remove the belt cartridge and toner cartridge See Section 5 2 1 1 2 Remove the dustproof glass from the optical unit 1 3 Clean the dustproof glass See section 5 1 2 5 Clean the laser beam opening of optical unit 2 3 If White Line II failure is attributed to toner cartridge replace it with a new cartridge 8 44 No 8 Vertical White Band Phenomenon White band appears in the vertical direction of printed image as shown in the print sample of upper right corner Main Causes 1 Silicone oil adheres to the transfer drum Drum Cleaner Transfer Unit Trnsfer Drum Transfer Unit Paper Dischager Unit Transfer Roller Transfer Drum Adhered Silicone oil Paper Feeding Roller Countermeasures
116. eplacement work confirm the grounding wire to be put back and connected to the earth mark L 6 Confirm the direction of parts and length of screws in replacement work of the maintenance parts See Table 7 1 7 Do not use any solvent such as alcohol for the maintenance of this printer 8 Confirm all the parts and covers installed or assembled properly prior to starting the test run after replacement of the maintenance parts See Chapter 8 Troubleshooting and 9 List of Maintenance Parts for reference 7 1 Table 7 1 Table of Applicable Screws Class Code Name of Screw eliza ipe Ob HOw Remarks ones Length Sharp BT3X8 T3 8mm BT3XxX 12 T3 10mm To be used Cross recessed head T4 6mm iiss for installation tapping screw of plastic parts BT4xX 8 T4 8mm BT4 X10 T4 10mm To be used for C installation of ST3X 6 S tight screw ST 6mm parts to steel plate Cross recessed To be used for MAX 6 head tapping screw M4 6mm C flame and Pan head ONG SP3 Unique screw for M3 10mm D 4 For fuser heater connector 46 connector Cross recessed head ze screw with flange M3 6mm C dE Cross recessed head FAx 6 screw with flange F4 6mm cB J For fuser unit FST3 X10 Cross recessed head FST 10mm C gt For fuser unit S tight screw with flange 7 2 7 1 Replacement of Cover Name of Each Covers Top Cover 7 1 4 Operator
117. er D Paper Exit Unit Mechanical part to exit the fused paper from the printer 8 Paper Exit Roller Roller to exit papers from of the printer 4 26 Fig 4 24 D Paper Cassete e amp Paper Discharger Unit 2 Pick Up Roller user Unit Resistration Roller Paper Exit Unit 4 Transfer Part e 8 Paper Exit Roller 4 27 4 1 4 Fusing Unit Fig 4 25 Fusing Unit employs the thermal fusing system containing the heater in the roller Papers carrying the toner images pass between the heat rollers Heat and pressure is applied to the paper when passing between the heat rollers so that the toner image is melted and fused on the paper 1 Structure Fusing Unit consists of the following component members CD Fusing Roller incorporates the heater 2 Back up Roller is a pressure roller to incorporates the heater 3 Fusing Heater is heated by the halogen lamp 4 Thermistor is a sensor to detect temperature of fuser roller s surface Thermal Fuse prevent the fuser roller from being excessively heated up Oil Bottle contains the silicone oil for fusing CD Cleaning Roller cleans the fuser roller Fig 4 25 4 28 2 Process of Fusing Fig 4 26 D Silicone oil supplied from the oil bottle is applied to the surface of fuser roller and back up roller 2 Toner image is transferred on the paper but not yet fused on the paper 3 Tansported pape
118. er 2 Toner adhering to the developer roller drops on the OPC belt Toner Cartridge Cleaning Brush Cleaning Roller Developer Roller Waste Toner Feeder Toner Drop Transfer Drum Countermeasures 1 Check up the cleaning brush and waste toner feeder 1 1 Clean the perimeter of the cleaning brush installation location 1 2 Check if the seal is deformed or damaged f any deformation or damage replace the waste toner feeder with a new feeder 1 3 Check if the waste toner is stuck in the printer engine If stuck absorb and remove the waste toner with the vacuum cleaner 2 Remove the toner cartridge 2 1 Clean the toner cartridge 2 2 Replace the toner cartridge with a new cartridge 8 51 No 15 White Spot Black Spot Phenomenon White spot and black spot appear on the print as shown in the print sample of upper right corner Main Causes 1 Foreign particles adhering to the OPC belt or transfer drum 2 OPC belt or transfer drum is damaged 3 Foreign particles mixed in the toner 4 Foreign particles adhering to the transfer roller or local deformation of transfer roller OPC Belt Transfer Drum Belt Cartridge Countermeasures 1 Remove the belt cartridge 1 1 1 Lightly wipe off the foreign particles adhering to OPC belt using cotton cloth 1 2 Replace the damaged belt cartridge with a new cartridge 2 Open the transfer unit and check t
119. et up location suitable for the smooth operation and maintenance of printer 40cm 16 70cm 28 Paper Exit Side Front Side 3 1 3 2 Unpacking N WARNING The package containing a printer weighs approximately 40kg so that it is too heavy for one person to carry It needs more than two adults to move the printer Since this printer is a precision machine ensure to carry it slowly with good care so that no impact shall be given to the printer while moving Do not attempt to hold a printer as covered by vinyl sheet because it is slippery and results in damage and injury if dropped from your hand 3 2 1 Unpacking of Printer Fig 3 2 Cut the bands 2 pcs binding the package Remove the plastic joints 7 4 locations Remove the tape binding the top of package Open up the top of package to take the starter kit out Lift the outer box 1 up for removal Remove the top partition packing 3 Take the power cable out Open up the vinyl sheet 5 covering the printer body Lift up the printer body with another person s help and lay it on the floor 10 Set up the printer on the suitable location 1D Remove the tape 8 fixing the paper cassette 12 Remove the protective tape 9 1 location oeocooesomsc 3 2 Fig 3 2 Unpacking of Printer Package NANE OF PARTS QTY OUTER BOX BASE UPPER PACKING SILICA GEL EN POLYETHYLENE BAG EN POLYETHYLEN
120. ew drum jam sensor DPJ to the stay B 2 After the above follow exactly the reverse order of disassembling procedures Precautions Fig 7 44 7 55 7 5 7 Oil Sensor OIL Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the fuser unit 2 Remove the side cover LU See the item 7 1 1 S Remove the side cover L See the item 7 1 2 4 Remove the top cover See the item 7 1 4 Remove the controller case A assembly See the item 7 2 5 Disconnect the oil sensor connector 7 Remove the cover F 8 Remove the set screw ST3X 6 2 pcs of oil sensor Remove the oil sensor Assembly Procedures D Install a new oil sensor 2 After the above follow exactly the reverse order of disassembling procedures Precautions Fig 7 45 7 56 7 5 8 Drum Encoder Sensor EN Tools D Phillips Screwdriver 1 2 Disassembly Procedures Remove the toner cartridge Remove the belt cartridge Remove the drum cleaner Remove the fuser unit Remove the side cover L See the item 7 1 2 Remove the top cover See the item 7 1 4 Remove the transfer drum See the item 7 6 3 OQ ONONO See the item 7 2 6 Remove the sensor holder Disconnect the connectors connected with the encoder o e the sensor holder
121. f Printing System Toner image is formed through the potential of OPC belt varying in each process of the charger exposure development transfer and cleaning D Process of Print System See Fig 4 8 a i OPC belt is biased to the voltage CBV V by the power supply CBV ii Negative high voltage is applied to the charger unit by the power supply CHV and corona is generated as the result iii Developer Roller of the toner cartridge is biased to DBV V by the power supply DBV iv Frame potential of the transfer drum is GND 2 Variation of OPC Belt s Potential See Fig 4 8 b i OPC belt is biased to CBV V ii OPC belt s surface is evenly charged to Vo V in the process of charging iii Potential of the exposure part is discharged till VR V as exposed to the laser beam in the process of exposing and an electrostatic latent image is formed on the OPC belt as the result iv Negatively charged toner is moved to OPC belt in the development process due to difference of potential between VR V and DBV V and the visible image is formed as the result v Negatively charged toner on the OPC belt is moved to the transfer drum in the transfer process because the potential GND of transfer drum is greater than VR V of OPC belt vi OPC belt is discharged by the erase lamp radiating the OPC belt 4 8 Paper Discharger Transfer Roller N E Erase Lamp Cleaning Brade Toner OO
122. fe stop procedures when errors occur in the printer 4 30 L v Host Computer VF VF Control Controller Cleaning Roller Sensor Fusing Unit Operator Panel DC Power Supply Unit Fig 4 27 Cooling Jd mwd a Scanner Fan 1 Motor Belt Drum Sensor Sensor Sequential Control Thermal Control Toner Concentration Control Operator Panel Control Error Clearance Program High Voltage Unit Interlock Switch O O O O 0 O ATC 4 pcs LDU Paper Feed Sensor Paper Empty Sensor Paper Size Sensor Paper Exit Sensor OHP Sensor Drum Jam Sensor 4 Layouts amp Functions of Electrical Parts Print P W B Fig 4 28 No Name Function To control the series of processes of the Printer Fuser Temperature Control Laser Output Control Operator eee Panel Indication Toner Empty Sensing Control Error Processing Control Interface Control To display the Printer s operation status and support 2 Panel Indicator P W B the manual input switch To control the drive and output of the laser diode to be 3 LDU P W B included in the optical unit To sense the emission of laser diode and also the 4 PDU P W B beam position to be included in the Optical unit E Es T To discharge the OPC belt by radiating the LED beam a onto the OPC belt to be included in the Optical unit To relay the signals between the controlled parts
123. fety Alert Symbol This is the safety alert symbol When you find this symbol placed on your equipments or marked in this Manual be alert for the potential of human injuries Follow the recommended precautions and safety operation practices ii 1 Introductory Information continue Understanding Signal Words DANGER is used to indicate the presence of a hazard which will cause severe human injuries or fatal accident if the warning is ignored WARNING is used to indicate the presence of a hazard or unsafe practices which may cause severe human injuries or fatal accident if the warning is ignored CAUTION is used to indicate the presence of a hazard or unsafe practices which may cause minor human injuries if the warning is ignored CAUTION also calls attention to safety messages in this Manual Follow Safety Instructions Carefully read all the safety messages set out in this Manual and also in the safety signs placed on your equipments In this Manual the safety instructions safety alert symbols and signal words are bracketed by rectangular enclosure to call for attention Keep the safety signs in good condition without missing or damage Replace the safety signs if smeared or damaged Learn how to operate the equipment and how to use the control properly Do not let anyone operate without acknowledging the instructions Keep the equipments in proper working condition Unauthorized modification to equipments
124. g boss install the optical unit to the printer base 2 After the above follow exactly the reverse order of disassembling procedures Precautions Harness Tube Laser WARNING Label 5mW 780nm 800nm DANGER INVISIBLE LASER RADIATION WHEN OPEN DIRECT EXPOSURE TO BEAM VORSICHT UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GE FFNET UND SICHERHEITSVERRIEGELUNG BERBR CKT NICHT DEM STRAHL AUSSETZEN DANGER RAYON LASER INVISIBLE LORS DE LOUVER TURE EVITER LEXPOSITION DIRECTE PELIGRO RADIACION LASER INVISIBLE AL ABRIR EVITAR LA EXPOSICION DIRECTA AL HAZ f amp BE Moresl yanoenan E LAKESSESEOESEHNUCTERG MAS va N WARNING disassemble the laser the replaced optical unit D There is a class Ib laser within the optical unit Do not attempt to 2 Optical unit is replaced as a whole unit 9 Confirm all the covers have been installed prior to any test run or operation in order to prevent any laser radiation from occurring No adjustment is required to 7 32 7 3 4 Control Fan CTFAN Tools D Phillips Screwdriver 1 2 Disassembly Procedures Cp Remove the side cover LU See the item 7 1 1 Remove the side cover L See the item 7 1 2 Remove the top cover See the item 7 1 4 Remove the set screw ST3X6 3 pcs and shield cover upper Disconnect all the fan motor harness connectors
125. ger Unit Fig 5 23 1 Criterion of Replacement Paper discharger should be replaced with new discharger unit according to the periodical maintenance cycle set out in the Table 7 1 When time is due for replacement of paper discharger unit the warning code OW appears in LCD of the operator panel 2 Purpose of Replacement To prevent the discharging efficiency from declining due to deterioration of the paper discharger unit 3 Precaution N PRECAUTION Do not touch the charging wire of paper discharger unit 4 Necessary tools and replacement materials CD Two or three pieces of cotton cloth for cleaning 2 Paper discharger one unit 5 Work Procedures Sequence of Disassembling D After pushing the push button top of power supply to turn the power off remove the power supply cord from the outlet Open the back cover L 5 22 Sequence of Replacement Refer to the item 4 1 2 3 for the removal of paper discharging unit AC charger CD Remove the paper discharger unit from the transfer unit 2 Clean the area where the paper discharging unit shall be mounted S Install new paper discharging unit to the transfer unit Fig 5 23 Sequence of Assembling D Close the back cover L 2 Plug the power supply cord to the printer Turn the power supply switch on p Upon completion of the warming up process clear the code OW
126. gistration clutch 4 Remove the registration clutch from the shaft Remove the set screw ST3 X6 2 pcs of IOD2 P W B base Remove the IOD2 P W B with the base from the main body Assembly Procedures D Assemble a new IOD2 P W B Having the recess of P W B base meet the stopper of paper feeding clutch install IOD2 P W B See the Fig 7 16 2 After above assembling follow the reverse order of above disassembling for set up 3 Upon completion of above set up connect the power supply cable Turn on the power switch of the printer Execute the test print in Service Mode Confirm the operation and print quality of printer Precautions CD When replacing the IOD1 P W B pay a good attention so that no damage is caused due to electrostatic 7 19 Side Cover R er Cleaner Clutch Registration Clutch C ring IOD2 P W B Fig 7 15 Recessed Part Paper Feeder Clutch IOD Base Rear Side Fig 7 16 7 20 7 2 4 Panel P W B LCD inclusive Tools D Phillips Screwdriver 1 2 Disassembly Procedures Side Cover LU D Remove the side cover LU See the item 7 1 1 2 Remove the set screw BT4 X 10 1 pc of the panel case assembly S Disconnect the connector 4 Remove the set screw BT3 X 8 4 pcs of panel P W B and LCD from the panel case assembly Upon removal of the panel
127. he circumstances beforehand 1 2 Special Safety Information 1 Introductory Information The cautions and warnings are made clear by following the Safety Alert Symbol or Signal Words such as DANGER WARNING and CAUTION D Safety Alert Symbol This is the safety alert symbol When you find this symbol placed on your equipments or marked in this Manual be alert for the potential of human injuries Follow the recommended precautions and safety operation practices 1 Introductory Information continue Understanding Signal Words DANGER is used to indicate the presence of a hazard which will cause severe human injuries or fatal accident if the warning is ignored WARNING is used to indicate the presence of a hazard or unsafe practices which may cause severe human injuries or fatal accident if the warning is ignored CAUTION is used to indicate the presence of a hazard or unsafe practices which may cause minor human injuries if the warning is ignored CAUTION also calls attention to safety messages in this Manual Follow Safety Instructions Carefully read all the safety messages set out in this Manual and also in the safety signs placed on your equipments In this Manual the safety instructions safety alert symbols and signal words are bracketed by rectangular enclosure to call for attention Keep the safety signs in good condition without missing or damage Replace the safety signs if smeared or
128. he power supply switch ON Execute the test print in Service Mode Confirm the operation and print quality Precautions aA gt Se T Oe ee x Fuser Clutch VES gt Cleaner Clutch IOD2 P W B 7 44 7 5 Replacement of Sensor Layout of Sensors Temperature Sensor 7 5 12 EThermistor to detect 7 5 3 Cleaning Roller Sensor Paper Exit Sensor 7 5 6 7 5 7 gt 7 5 1 2 Interlock Switch Top 7 5 11 Toner Detecting 7 5 9 S Sensor Belt Sensor Zp 7544 7 5 1 3 PE dd Interlock Switch R Front Interlock Switch Rear 7 5 8 D Developing Phot Sensor Drum Encorder Sensor 7 5 10 7 5 4 Waste Toner Sensor OHP Sensor 7 5 2 Paper Feeder Sensor PT1 7 5 4 7 5 5 l Paper Size Sensor Fig 7 36 7 5 1 1 Interlock Switch DSW1 for Front Cover Tools D Phillips Screwdriver 1 Disassembly Procedures D Remove the top cover See the item 7 1 4 2 Remove the shield cover upper 3 Remove the switch from the stay U 4 Remove the connector Remove the switch from the switch case Switch case Interlock Switch Assembly Procedures D Install a new switch to the switch base 2 Connect the connector S Install the switch case to the stay U Fig 7 37 Precautions A Caution Since the interlock switch is an important part for the safety confirm after installati
129. he printer 3 5 3 3 2 Installation of OPC Belt Cartridge 3 6 3 3 83 Installation of Cleaning Roller and Oil Bottle 3 7 3 3 4 Test Run and Test Print 0 3 8 3 Installation 3 1 Conditions for Installation Laser beam printer is likely influenced by the environment of set up location IF Printer was set up at the inappropriate location the printer may not perform the characteristic functions as expected Therefore the following factors should be taken into consideration prior to deciding where to set 1 Environmental Conditions Printer should not be set up at the locations referred to by the following items a through d specifying the inappropriate locations for set up a Likely to receive the direct sunbeam or similar light For example window side b Likely to cause the big difference in temperature and humidity between the maximum and minimum level Normal operation environment is within 10 C 35 C 20 80 RH and without any condensation c Likely to receive cold wind from air conditioner or worm wind from heater or to receive direct radiant heat d Likely to cause much dust or have corrosive gas like ammonia e Users to select the location of good ventilation and set a printer on the flat surface f Users to check the maximum tilt of set up location to be within 1 2 Basic Layout of Printer Set Up Location Fig 3 1 shows the basic layout of printer s
130. he toner sensor P W B to the engine frame R TTR D Connect the connectors with a new toner sensor P W B Install the toner sensor P W B to the engine frame L S After the above follow exactly the reverse order of disassembling procedures Precautions 7 61 7 5 12 Cleaning Roller Sensor CRS Tools D Phillips Screwdriver 1 Disassembly Procedures D Open the paper exit cover 2 Remove the paper exit harness cover by removing set screw ST3 X 6 1 pc S Remove the connector connected with the cleaning roller sensor Remove the cleaning roller sensor i Unhook the hook by inserting a finger Hook C a into the rear side of installation base C E J ii Remove the sensor A Hook B Installation Base Connector Installation Hole Hook A Assembly Procedures Cleaning Roller Sensor D Prepare a new cleaning roller sensor 2 Put the sensor in the installation hole from the hook b side of hook S Push the sensor into the hole as having it meet the hook c 4 Connect the connector with the sensor Confirm that the sensor is firmly hooked over the hook a b and c Precautions CD When connecting the connector to the sensor do not apply any excessive force to the connector P W B of the sensor side 7 62 7 6 Replacement of Roller and Drum 7 6 1 Transfer Unit Necessary Tools
131. he transfer drum 2 1 Lightly wipe off the foreign particles adhering to transfer drum using cotton cloth 2 2 Replace the damaged transfer drum with a new drum See Section 7 6 3 3 Remove the toner cartridge 3 1 Replace the toner cartridge with a new cartridge See Section 3 3 4 Replace the transfer unit with a new unit See Section 7 6 1 8 52 No 16 Mixed Color Image Phenomenon Mixed color image appears in the print as shown in the print sample of upper right corner Main Causes 1 Failure of toner cartridge Blade pressure of the developer roller is inappropriate or the blade is deformed 2 Restitution error of toner cartridge Toner Cartridge Developer Roller Developer Blade Countermeasures 1 Confirm that the toner cartridge can be inserted smoothly 2 Replace the toner cartridge with a new cartridge 3 Reconfirm that the front cover unit is locked 8 53 No 17 Color Misregistration Phenomenon Color misregistration is caused between the two colors as shown in the print sample of upper right corner Main Causes 1 OPC belt cartridge is not properly installed 2 OPC belt cartridge is deformed 3 Cleaning brush is unstable in the operation 4 Rotational load to the OPC belt cartridge is excessive Drum Cleaner OPC Belt Cartridge Toner Cartridge K Y M C Countermeasures 1
132. idge Cleaning Belt Belt Seam Countermeasures 1 Replace the belt cartridge with a new cartridge See Section 5 2 1 8 49 No 13 White Band Phenomenon White banding line appears in the horizontal direction and consequently causes a missing image as shown in the print sample of upper right corner Main Causes 1 Installation failure of the transfer unit and deformation of the transfer roller 2 Contact failure of the transfer roller s bias pole 3 TR Cam Clutch failure Drum Cleaner Fusing Unit Transfer Unit Paper Discharger Unit Transfer Roller Transfer Drum Paper Feeding Roller Countermeasures 1 Confirm if the transfer unit is properly locked or not Both side faces of the transfer unit are fixed by the hook 2 Confirm if the transfer unit is properly installed or not 3 Replace the TR cam clutch with a new clutch See Section 7 4 6 4 Replace the transfer unit with a new unit See Section 7 6 1 8 50 No 14 Toner Drop B Phenomenon Toner spot stain is caused on the print by the toner dropping within the printer engine as shown in the print sample of upper right corner Main Causes 1 Toner drops on the transfer drum due to the breakdown of the waste toner feeder s drum cleaner 1 1 Mylar of the waste toner feeder is deformed 1 2 Waste toner is not properly collected by the waste toner feed
133. in Causes 1 Failure of main motor 1 1 Irregular rotation of the drive motor 1 2 Failure of the gear 1 3 Variation of OPC belt running speed due to above reasons Failure of OPC belt 2 Countermeasures 1 Replace the OPC belt drive motor BM with a new motor See Section 7 3 1 2 Replace the belt cartridge with a new cartridge See Section 5 2 1 8 40 No 4 Ribbing Phenomenon Light print occurs in the right or left side of image as shown in the print sample of upper right corner Main Causes 1 Slight tilt on the surface of printer installation table Tilt should be less than 1 2 Toner amount in the toner cartridge is insufficient 3 Toner cartridge is not laid as level and as the result toner concentrates to one side Countermeasures 1 Confirm the printer installation table to be flat and appropriate 2 Shake the toner cartridge horizontally for several times to remedy the concentration See Section 3 3 3 3 Replace the toner cartridge with a new cartridge 8 41 No 5 Wrinkle Image Migration Phenomenon Banding shadows of different optical density appear due to the wrinkle image migration and color misregistration occurring on the print paper as shown in the print sample of upper right corner Main Causes 1 Paper in use is not a recommended paper or is an abandoned paper 2 Paper dis
134. ing procedures Ozone Fan Case il j Fig 7 27 b Precautions D When installing the fan motor make sure that rating label of fan motor faces the exhaust side 7 35 7 4 Replacement of Clutch and Solenoid Layout of Clutch and Solenoid Drum Cleaner Solenoid Fuser Clutch Cleaner Clutch Transfer Solenoid Registration Clutch Paper Feed Clutch 33 4 K Developer Clutch Y Developer Clutch M Developer Clutch C Developer Clutch Developer Solenoids Fig 7 28 7 36 7 4 1 Paper Feeding Clutch PCLU Tools D Phillips Screwdriver 1 2 2 Slotted Screwdriver 1 Disassembly Procedures D Remove the side cover R See the item 7 1 3 2 Remove the IOD2 P W B base See the item 7 2 3 3 Remove the C ring fixing the paper feeding clutch Remove the paper feeding clutch from the shaft Assembly Procedures D Install a new paper feeding clutch to the shaft Having the recess of P W B base meet the stopper of paper feeding clutch install IOD2 P W B 2 Install the C ring to the shaft s groove and fix the paper feeding clutch 9 After the above follow exactly the reverse order of disassembling procedures Precautions IOD2 P W B Fig 7 29 7 37 7 4 2 Registration Clutch RECL Tools D Phillips Screwdriver 1 2 2 Slotted Sc
135. ing the MCTL P W B or executing the NVRAM INITIAL 2 Procedures of Setting D Prior to replacing the MCTL P W B confirm the contents of RAM regarding the following subjects Factory Mode Code Subject Confirmation Value 43 MARGIN ADJUST Top Margin Set Value 43 MARGIN ADJUST Left Margin Set Value 45 LP TUNE UP Adjustment Value 3 in ordinary case 45 THV TUNE UP Adjustment Value 0 in ordinary case 45 DBV TUNE UP Adjustment Value 0 in ordinary case 45 CBV TUNE UP Adjustment Value 0 in ordinary case 45 FBV TUNE UP Adjustment Value 0 in ordinary case 47 TOTAL PAGE SET Total Print Count 48 EACH IMAGE SET Formed Image Count of 4 Colors 2 Execute 46 NVRAM INITIAL in the FACTORY MODE 8 After implementing the NVRAM INITIAL input the value confirmed in the procedure 1 to the RAM for completing the setting 6 35 7 Replacement Procedure of Maintenance Parts 7 1 Replacement of Cover 00 ccc ees 7 2 7 1 1 Upper Side Cover LU oc cence bre eek were eee ORI ee ome a eek 7 4 XE ME o a8o0 7d TCI 7 5 7 13 Sude OCOVEL TL 32343 ERREUR SERRE 49 eee bets Ode dolet 7 6 Der NEGO ADD 7 7 Jd MBBerEXI D DVOl sewecocceeceeee ones ede eee ERE PROSUSU aU 7 8 71 6 Rear Cover Oi sroergarneds amre SEEE R wa DEE E G 7 9 JJ Reat Cov r U sagcavecs senses ear eaii E S3 qr dE ERE Ed 7 10 7 1 8 Rear Cover llle 7 11 7 1 9 Base Cover R awe cen ciedh
136. is outputted or specific color is missing not printed as shown in the print sample of upper right corner Main Causes 1 Laser light path is blocked by paper or other material stuck at opening of optical unit 2 Transfer Solenoid is broken not functioning 3 There is no belt bias voltage CBV injected 4 There is no output from the high voltage unit HVU due to break down Drum Cleaner OPC Belt Cartridge Fusing Unit Toner Cartridge K Y M C Transfer Unit Paper Discharger Unit Optical Unit Transfer Roller Transfer Drum Paper Cassette Paper Feeding Roller Laser Path Countermeasures 1 Confirm that there is no foreign particles is stuck at the opening of optical unit 2 Replace the transfer solenoid with a new solenoid See Section 7 4 6 3 Replace the belt cartridge with a new belt cartridge See Section 7 2 1 4 Replace the high voltage unit HVU with a new unit See Section 7 2 6 8 60 No 24 Insufficient Fusing Phenomenon Printed image is partially missing as shown in the print sample of upper right corner This proves that the fusing is insufficient Main Causes 1 Wrong selection of print media label or envelope etc at the Host side 2 Recommended paper is not used 3 Failure of the fuser unit Cleaning Roller Fuser Roller Back up Roller Countermeasures 1 Adjust the mode of Host side to
137. ive wee hers ee cage gee we peace 7 12 7 1 10 Base Cover L dde ea Ru E Reha m e prx RUN RICO E e I E ad 7 13 EAL Gleaner COVBI 3 53 esce pae a Suobd R a PRO RO ToC ERI de 7 14 7 2 Replacement of Printed Wire Board P W B 7 15 121 MOTIEBW UB arero renkan saran pur od Rolf aL RR X hee ee Kee 7 16 722 JODIE Bus eee ee re ee P Eq Ib EO ee ee ere ee ee eek eee eee 7 18 723 JOD PWB uas duos dn prre vet aaa 6 8 o deo o i od die ad 7 19 7 2 4 EI 2 RI2iRTTERLDUTCTTORTITT TOT 7 21 7 2 9 Power S pply UAT aixaesewilusRuw dederis raita ken a 7 22 7 26 High Voltage UNI 2212x359 meranen a a ceed cee 7 24 Kur Erase bam 2st ened eiu s eor u s i Rec aca ega n eR REO ee eed 7 26 7 3 Replacement of Motor Unit anaana anana 7 27 7 3 1 Main Motor Main Gear Unit cssssseseaeeu vena deco as aves E DE 7 28 7 3 2 Developer Drive Motor Developer Drive Unit 7 30 7 3 3 Optical Unit ce ee eee cree a cic ce tele tates e ance eg eee wee ee ee ae 7 32 P3 ODDO ES nee ad eire era teu ded oe hw eu EUEASO UE Eu Rd eise E E E d 7 33 Tao F se Fan sies 4 PGiRP GEEGUbERE Rd s deed UR d PR d Meat do 20884 7 34 13 6 EE 00 11 EE 7 35 7 4 Replacement of Clutch and Solenoid LLsuss 7 36 7 4 1 Paper Feeding Clutch 22 226 2anse beste du qs we RR REDE LEES 7 37 7 4 2 Registration Clutch 0000 ee 7 38 7 4 3 Fuser Clutch DE 7 39 7 4 4 Cleaner Clutch eanan anaana 7 40 7 4 5 Developer Clutch 1 24 ede
138. l of toner the potential Vo V at the non exposed area of OPC belt and the potential VR V at the exposed area of OPC belt Developing is processed by the toner adhering to the OPC belt due to the attraction between the potential of toner and the potential VR V at the exposed area of OPC belt Toner image is formed visible on the OPC belt On the other hand no development takes place at the non exposed area because the potential of toner and that of OPC belt is identical pole and therefore repels each other 4 13 Toner Cartridge Dev roll Fig 4 13 X won 95000 CC S i7 Z amp g 2 O E JO P d N o0 ZANO ZN S a e ae LA 2 E Exposing Developing Fig 4 14 First Transfer Drum First Transfer Process means that toner images on the OPC belt is transferred onto the transfer drum 1 Structure of Drum Transfer Fig 4 7 D First transfer part is located as shown in Fig 4 7 2 Material of the drum is aluminum 3 Semiconductor rubber is provided to the drum surface as shown in Fig 4 16 4 Transfer drum rotates as contacting and synchronizing with the OPC belt Transfer Drum Aluminum Rubber Fig 4 16 4 15 2 Process of First Transfer Fig 4 17 D OPC belt that has been through the development pro
139. laser light on OPC belt as converting the laser light to the beam light through lens and reflective mirror to form an electrostatic latent image 2 Process of Exposing Fig 4 11 Cp OPC belt surface has been charged to the potential Vo V in the process of charging 2 Laser light is scanned as rectangular to the forwarding direction of OPC belt 9 High speed switching of laser is made according to the transmitted image data 4 Charge of the areas radiated by the laser light is discharged where the potential is VR V An electrostatic latent image is formed invisible on the OPC belt as shown Fig 4 11 Charging Exposing Developing Developing Process means that an electrostatic latent image on OPC belt is made visible with toner 1 Structure of Toner Cartridge Fig 4 7 p Toner cartridge is located as shown in Fig 4 7 2 Four toner cartridges are made available from the top to bottom in the order of specified color as black yellow magenta and cyan 3 Each color toner is loaded in the corresponding toner cartridge 2 Process of Developing Fig 4 7 and Fig 4 12 13 14 Cp Toner adheres to the Dev roller of toner cartridge Q Developing is processed by this Dev roller contacting the OPC belt surface Dev roller has been biased to the potential DBV V Fig 4 13 describes the relationship established between the potentia
140. lect key after selecting EACH IMAGE SERVICE MODE 1 mode a gt b EACH IMAGE 35 IMAGE OF 2 Using Scroll key select the subject color and then gt Y M C K press Select key b gt c 35 IMAGE OF Y 3 Number of created images per the selected color sede is displayed Ex Yellow c 35 IMAGE OF gt Y M C K 4 Press the Clear key to clear the screen c c gt d SERVICE MODE TEST PRINT Using Scroll key select other color and then press 5 Select key to confirm the number of created images per each colors 6 Press the Clear key to return to the Service mode d gt e 36 CLEAR CARE Care Code displayed in the LCD can be cleared Make sure to implement the displayed CLEAR CARE mode whenever replacing the applicable periodical replacement parts with new parts Procedure Step Description of Procedures Message in LCD Press Select key after selecting CLEAR CARE mode a gt b Using Scroll key have the cursor meet the applicable CARE code and then press Select key 2 b gt c When implementing CLEAR CARE use the Scroll key to have the cursor meet YES and then press Select key 3 Fuser cleaning roller c g Belt cartridge d 4 Fuser unit e 120k replacement kit f 4 Press the Clear key to clear the CLEAR CARE mode g gt h SERVICE MODE CLEAR CARE 36
141. ll a new fuser connector 2 After the above follow exactly the reverse order of disassembling procedures Precautions 7 77 7 7 Replacement of Fuser Unit Layout of Fuser Unit Parts F Cover L Cleaning Roller Back up Roller Low Guide F Terminal L Thermister Cover y Thermistor Ass y Fusing Heater Fusing Roller F Terminal R F Cover B Oil Pan F Cover R Fig 7 59 N DANGER Note in Parts Replacement 1 Fuser unit consists of important parts in terms of the safety Therefore replacement of parts or disassembly and maintenance work should be done at the appropriate facilities by skillful service personnel acquainted with electrical safety After the assembling work the product safety should be reconfirmed 2 Since the fuser unit is very hot make sure that the fuser unit and perimeter is well cooled down prior to starting the replacement of parts Otherwise you may get burn when touching the hot areas 3 Fuser unit contains the silicone oil Care not to drop the silicone oil on the floor otherwise the floor is very slippery and dangerous 7 78 62 2 Thermal Cut Off Thermal Cut Off D115 D125 117 128 Back up Roller Fuser Heater 300W Fuser Roller Fuser Heater 400W Thermister Tube Wiring of Fuse
142. ly contact the transfer drum Tools to be prepared D Handy vacuum cleaner unique for toner 2 Cotton cloth 2 3 pieces Cleaning Procedures CD Open the paper exit cover Open the front cover unit S Remove the toner cartridge 4 Remove the belt cartridge Absorb toner scattered on the bottom of Printer Interior with a vacuum cleaner Clean the Printer Interior with a cotton applicator D Put back the removed units as they were Printer Interior Handy vacuum cleaner unique for toner Fig 5 9 5 1 3 Periodic Maintenance Parts and Maintenance Cycle Maintenance Work shall be implemented according to the Periodic Maintenance Parts and Maintenance Cycle set out in Table 5 4 5 13 rS Table 5 4 Periodic Maintenance Parts and Maintenance Cycle Maintenance Parts Description Cleaning Cycle 1 Time 2 Skill 3 Sa Name of Parts No Function Clause Condition or Case minute Level US 50K prints 4 1 Fuser Unit EC To fix toner image on a 5 2 1 Maintenance 2 0 Aor B JPN transported paper Code C FU To consist of OPC belt and OnE mane LE 2 Belt Cartridge form an electrostatic latent 5 2 2 comes first 4 0 Aor B image Code C BC To transfer toner image 120K prints 3 Transfer Roller from transfer transfer drum 5 2 3 Maintenance 2 0 A or B to a transported paper Code C OW T rai Hem 1
143. may impair the function amp safety and affect the life of equipments Listed below is the various kind of WARNING contained in this Manual HAZARDOUS VOLTAGE It may cause serious injuries or fatal accidents Voltage is now applied from the power supply of printer There is the danger of electrical shock if you touch the active area inside the printer Make sure to turn the power supply switch OFF and pull out the plug from the outlet before starting maintenance work to printer iv 3 Follow Safety Instructions continue HARMFUL OZONE GAS Inhalation of excessive amount of ozone gas may adversely affect the respiratory organs Ozone Filter is provided to this printer to reduce the exhausted ozone This filter must be replaced with new filter periodically in accordance with the Manual attached to this printer Listed below are the various kinds of CAUTION contained in this Manual N Hot surface HeiBe oberfl che Surface chaude AMORA 3 Avoid contact Bei beseitigung Eviter tout contact Mhita HOT SURFACE Can cause a burn Fusing Unit is approx 160 C hot so that perimeter is also very hot When you need to change the cleaning pad or remove jammed papers wait about 20 minutes after opening up the paper exit unit and confirm the unit to be well cooled down N CAUTION ROTATING PARTS Be cautioned about the potential danger of various rollers to get your fingers or hand caugh
144. n the fusing unit Process circuit to process the temperature signal micro computer Sensor circuit for temperature signal for ACOFF signal Sensor circuit for temperature signal for HON signal Sensor circuit for temperature signal for processing Sensor circuit for shut down by the thermistor for THERR signal Heat lamp for the heat roller Heat lamp for the back up roller Characteristics of Signal HON N ACOFF THERR AD To turn on off the heater in side the fusing roller To turn off the relay RY1 when it is sensed too hot To detect the shut down by the thermistor To convert the temperature sensing signal to AD 9 Controlled Temperature and Safety TPS TA Temperature 150C TS Time 4 44 Sv V HR THERR ACOFF HON GA CPU TFU TFUe Fusing Unit Fig 4 34 Basic Structure of Fuser Control TS TA TPS To maintain the set point temperature for fusing of toner to be approx 150 C as appropriate by turning on off the thyristor Reference temperature approx 175 C to identify that it is excessively hot inside the fusing unit When it reaches to this point the relay RY turns off the power supply to the heat lamp is shut down and the printer stops the operation Limit temperature to have the temperature fuse start melting and shutting down the power supply to the h
145. ndinncs 4 30 4 21 Basi Structure eresie ee eanne 4 30 4 2 2 Operation of Control System ssusss 4 40 4 2 3 DC Power Supply Lillo edo MESE ErEpM IE LR ESE SUNY REPAS 4 50 4 2 4 High Voltage Power Supply Unit 4 53 4 2 5 General Wiring Diagram sesseessssss 4 55 4 Structure of Each Component Systems 4 1 Basic Structure 1 Mechanical amp Electrical Structures This laser beam color printer hereinafter called Printer consists of the five engineering systems such as Print Transfer Optical Paper Transport and Control System Printer runs a color printing through the interactive operations of above five systems as shown in Fig 4 1 D Print System Print system consisting of the following 6 six functional parts located around OPC Belt forms a toner image on the OPC Belt Charger Part Exposure Part Development Part First Transfer Part Discharger Part Cleaner Part 2 Optical System Optical system consisting of the following 2 two functional parts forms electrostatic latent images on the OPC Belt by scanning a laser beam Optical Unit Scanner Motor SCM Transfer System Transfer system consisting of the following 3 three functional parts transfers to the transported paper the toner image formed on the transfer drum Transfer Drum Second Transfer Part Drum Cleaner Part 4 Paper Transport System
146. nditions The following items a through d are all negative elements for installation of printer and therefore any location falling under those elements should be avoided for the installation a Likely to receive direct sun beam or similar light Window side for example b Likely to vary so much in terms of the temperature and humidity Normal operational condition to be within 10 C 32 5 C 20 80 RH and without condensation c Likely to directly receive cold wind from the air conditioner or warm wind or radiated heat from the heater d Likely to receive dust or corrosive gas like ammonia e Likely to have poor ventilation or set up surface not flat f Smoothness of set up surface greater than 1 degree 2 Basic Layout of Installation Location Fig 3 1 shows an appropriate layout of installation location for smooth operation and maintenance of printer 40cm 16 70cm 28 Paper Exit Side Front Side 10cm 4 fig3 1 11 3 2 Unpacking Procedures CD Remove the tape of upper face Take out the side cover R L Remove the upper packing 4 Take out the lower feeder unit cassette and guide R L inclusive Packing List Name of Parts Quantity Lower Feeder Unit Upper Packing 6 Side Cover L 5 Side Cover R 4 Set Up Guide L 3 Set Up Guide R Set Up Guide R Set Up Guide L Side Cover R m Side Cover L en 3 3 Assembly Procedures 1
147. nect the connector properly Is LL error cleared YES NO YES Replace the optical unit YE Is LL error cleared S NO Replace the MCTL P W B or DC power supply LVPS Job is complete Optical Unit 8 3 Imaging Failure 1 Backgro d uiu aaa xd ncm ie mun 872 9 ciae decked caw lbid oc ne deed 8 38 2 Missing Image al Bdge 2 ies aet suos qx E Roh yawn zac 8 39 pauca r rem 8 40 DD PHDDIDO 6er quu hera BQueRERPS fon LE ROSE AS A E E S pe 8 41 5 Wrinkle Image Migration 000 0 cee eee 8 42 6 White LINO sini oaths eee See cies 6 een Ree ede Cea meee ogee 8 43 A Wate LINEI tere deei ie ddr dod S cee ecc nc 9e dU dps E ard 8 44 8 Vertical White Band 21 999 b REERERDPbRSE TERES RE RRUSSORPRe 8 45 9 Black DINS Mm 8 46 10 Vertical Line naana aaan 8 47 11 Vertical Staggering Image ee RE ERRUE LE EXER 8 48 2 BAN MEET PTT 8 49 13 White Band LI 8 50 14 Toner Drop CPC 8 51 15 White Spot Black Sp t eca sasseanatiisn s saia mEn ae EEEE x 8 52 16 Mixed Color Image nananana aaae 8 53 17 Color Misregistration uid s a a naana aaa 8 54 18 19 M tte cuu adn aaran EENE hd A driciu aces RA 8 56 20 Residual Image adus gu erEFta seek eax e 8 57 21 Insufficient Gloss anaana aaae 8 58 22 Back Stain PPP 8 59 23 WAE PHN eere oeeo ara a a E see dE ec 8 60 24 Insufficient Fusing seno deem EEREESEREILI
148. ner by coupling the cleaner clutch to the main gear unit at timing of the drum cleaning 5 8 Developer Clutch DVCL Y M C K To drive the Mg roller of desired color toner cartridge by coupimg said toner cartridge to the developer gear unit at timing of the developing Developer Solenoid Unit PSL MC PSL KY To relocate the desired color toner cartridge to developing position at timing of the developing 10 Transfer Retract Solenoid TRSOL To have the transfer roller contact to the transfer roller s surface at timing of the second transfer 11 Cleaner Retract Solenoid FBSOL To have the drum cleaner contact to the transfer roller s surface at timing of the drum cleaning 4 36 Layout of Clutches and Solenoids oO O OO o Fig 4 30 4 37 Sensors No Name Code Function 1 Paper Size Sensor PSU Photo sensor to detect the paper size Photo sensor to detect the paper is fed 2 Paper Feeder Sensor PT1 from the paper cassette 3 Photo sensor to detect that paper is Paper Exit Sensor PT2 exited from the paper exit unit Photo sensor to detect if paper is loaded 4 Paper Sensor PEU or empty in the paper cassette 5 Photo sensor to detect if the fuser unit Oil Sensor OIL oil is empty or not Photo sensor to detect that material in the 6 OHP Sensor OHP paper casset
149. ng Precautions Transfer Unit Fixing Metal Metal Register roller Metal Gear Fig 7 51 7 64 7 6 3 Transfer Drum Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the toner cartridge 2 Remove the belt cartridge 3 Remove the fuser unit Remove the cleaner cover Remove the drum cleaner Open the transfer unit D Remove the top cover See the item 7 1 4 8 Remove the control fan assembly See the item 7 3 4 9 Remove the connector connected to the belt marker sensor 10 Remove the set screw ST3X6 2 pcs of stay A Wrap transfer drum surface with paper so that the transfer drum will not be scratched 13 Remove the stay A assembly 12 Push the transfer drum from the transfer unit side and remove the transfer drum from the shaft support 13 Pull up and remove the transfer drum from the top Assembly Procedures D Put a new transfer drum into main body from the top 2 Have the transfer drum s shaft meet the drum shaft support Q Pushing the transfer drum fit it into the shaft support 4 Install the stay A assembly After the above follow exactly the reverse order of disassembling procedures Precautions Do not touch the transfer drum surface with bare hands or scratch it 7 65 Wrap transfer drum surface with paper Transfer Drum Stay A Ass y
150. ning up the paper exit unit and confirm the unit to be well cooled down N CAUTION ROTATING PARTS Be cautioned about the potential danger of various rollers to get your fingers or hand caught into the machine and cause serious injuries Note that the exit roller ejecting printed papers is rotating while printing Be careful not to get your hairs fingers hands and sleeve or necktie caught in the machine while operating the machine Follow Safety Instructions continue N CAUTION HAZARDOUS POWDER Toner is fine powder to cause powder explosion if dumped into the fire Strictly refrain from dumping toner into the fire for disposal N CAUTION HAZARDOUS POWDER Toner is fine powder to cause troubles to eyes and respiratory organs if inhaled Handle carefully toner cartridge waste toner pack and developing unit not to spread the toner N CAUTION POWER CORDS amp PLUGS This printer is equipped with 3 wire power cords and 3 pronged plugs bi polar plug with grounding for the user s safety Use these power cords in conjunction with properly grounded electrical receptacles to avoid an electrical shock N CAUTION SAFETY INTERLOCK Cover and Paper Delivery Unit of this printer have electrical safety interlocks to turn the power off whenever they are opened Do not attempt to circumvent these safety interlocks Preface We thank you very much for your purchasing Hitachi color laser printer SL
151. nnect them properly Is F2 error cleared YES NO Replace the fan motor OZFAN Replace the IOD2 P W B Is F2 error cleared NO NO YES Job is complete Replace the MCTL P W B MCTL IOD2 2 19 PGND OZFANERR Job is complete 0 8 Error Code F4 Concerned Part Heater Fan iHTFAN j Confirm the connection of a heater fan connector NO Is DCN10 of IOD1 properly connected with a connector of the heater fan cael Connect them properly Is DCN1 of IOD1 properly connected with 11CN of MCTL P W B Is F4 error cleared ER Job is complete NO Check the voltage iHTFANON P NO DN Is the voltage between DCN10 4 and 5 to be a rising edge PES Replace the heater fan Is the voltage between DCN1 49 and 2 to be a rising edge Replace the IOD1 P W B NO Is F4 error cleared Ne Replace the MCTL P W B YES Job is complete MCTL IOD1 5 PGND HTFANERR High Voltage Unit iHVU j Confirm the status of a charger unit c1 N Is the charger unit properly installed 2 Re install the charger unit 7 Is a corona wire cut or shorted Replace the charger unit or belt cartridge NO Confirm the connection of high voltage wiring Is F5 error cleared XE Job is complete NO Is there any contract failure of the high voltage CHV output terminal xES Have the electric pole properly contact Is there any contract failure or sh
152. nt cover inner Replace the hinge holder of hinge arm s fixing pin i Undo the craw of hinge holder ii Turn the hinge holder to the arrow direction Remove the fixing pin and remove the coupling of hinge arm Remove the front cover inner Disconnect all the harness connectors connected with the developer position sensor and developer solenoid Remove the set screws ST3 X 6 2 pcs of front hinge L 10 Remove the front hinge L from the frame i Lifting up the front hinge L undo the hook from the frame 4 Sliding the front cover unit to the right side remove the coupling of hinge s fixing pin at the right side OVO e Assembly Procedures D Prepare a new front cover unit assembly 2 Couple the hinge pin of right side with the front cover unit 3 Have the hook of left front hinge L meet the frame hook the left front hinge 4 Fix the front hinge L by screwing 5 Couple the hinge arm to the front cover with the fixing pin Lock the fixing pin with the hinge holder 7 After the above follow exactly the reverse order of disassembling procedures Precautions 7 69 Hinge arm Front hinge L Hinge holder Front Inner Cover Front Cover Unit Fig 7 54 7 70 7 6 6 Paper Exit Roller Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the paper exit unit See the item 7 1 5
153. nter gear side to the bearing ii Connect the shaft of gear side to the bearing Sequence of Assembling Drum Cleaner Handle Install the cleaner cover 2 Close the paper exit cover 9 Push the push button top of power supply to turn the power on 4 Upon completion of the warming up process clear the code OW by CLEAR CARE mode Fig 5 25 a Spring oy Shaft of Counter Shaft of Drum Cleaner Fig 5 25 b 5 25 5 2 6 Replacement of Ozone Filter Fig 5 26 1 Criterion of Replacement Ozone filter should be replaced with new filter according to the periodical maintenance cycle set out in the Table 7 1 This is to prevent the ozone from being exhausted due to the deterioration of ozone filter 2 Precaution N CAUTION Ozone filter should be replaced with new filter every 12 months otherwise it may cause an offensive smell 3 Necessary tools and replacement materials D No special tool and equipment are necessary for the replacement of ozone filter 4 Work Procedures D Remove the ozone filter case provided at the rear of side cover R 2 Remove the ozone filter from the ozone filter case S Install a new ozone filter to the filter case 4 Install the ozone filter case to the side cover R Side Cover R Filter Case Back Cover L Fig 5 26 5 26 5 2 7 Checking of Paper Feeding Roller and Separator Pad 1
154. o SET displayed in the LCD and then press the select key to register the set value 6 30 48 EACH IMAGE SET This mode can reset the number of total pages of each color on NVRAM whenever executing NVRAM INITIAL or replacing the MCTL PWB Step Description of Procedures Message in LCD 39 FACTORY MODE 4 Press Select key after selecting EACH IMAGE SET a gt b gt EACH IMAGE SET 48 IMAGE OF gt Y M C K 2 Select the desired color subject to EACH IMAGE SET b gt c 48 IMAGE OF C 005432 P SET Use Scroll key to designate or change the desired digit 48 IMAGE OF Use Select key to input values to the blinking digit D Y M CIK Upon completing the input of values to be set use the scroll key to move the cursor to SET displayed in the LCD and then press the 39 PAC TORY MODE select key to register the set value gt c gt d DP CHECK Press the Clear key to wrap up the EACH IMAGE 4 SET mode d gt e 6 31 6 5 Procedures of Adjustment Work 6 5 1 Adjustment of Top and Left Margin Top and left margin can be adjusted by the key operation on the operator panel 1 Purpose If there is no top margin or left margin for the print guarantee area or when MCTL PWB is replaced the adjustment of top and left margin will be required 2 Adjustment Method D Execute GRID PRINT in the SERVICE MODE 2 Measure the position A and B of top ma
155. odic Maintenance 6 1 6 2 Daily Maintenance There is no part in the LFU to require daily maintenance such as cleaning etc Periodic Maintenance There is no part in the LFU to require periodic replacement However it is recommended for good performance of paper feeding that the following parts will be replaced in accordance with the periodic replacement cycle of counter parts of engine side Paper Feeding Roller 126142 Every 120k prints Separator Pad 123825 22 7 Replacement Procedures of Main Parts 7 1 Paper Sensor PEL OHP Sensor OHPL Necessary Tool Q Phillips Screwdriver 1 and 2 Disassembly Procedures 96606600G0 e Remove a side cover R No tool is necessary Remove a back cover LFU Remove screw BT4X8 1 pc Remove a paper guide L Remove screws ST4 X 6 2 pcs Remove a paper guide UL assembly Remove screws ST4 X 6 2 pcs Remove a paper sensor connector Remove a paper sensor from a paper guide UL Remove a OHP sensor from a paper guide UL by removing screws BT3X6 2 pcs Remove OHP sensor harness connector Assembly Procedures Q Q Install a new paper sensor to a paper guide UR Connect a connector to a paper sensor Install the new OHP sensor to the paper guide UR Assemble other pieces according to the reverse sequence of disassembling 23 7 2 Paper Size Sensor PSL Necessary Tool Q Phillips Screwdriver Disa
156. ol Toner Concentration Control imp ory lt gt Operator Panel Control Error Clearance Program Paper Sensor High Voltage Unit Paper Feed Sensor Paper Empty Sensor Host Computer VF VF Control Controller Cleaning Roller ensor Oil Sensor DC Power Supply Unit Fusing Unit Interlock Switch Paper Size Sensor D oe B eae Paper Exit Sensor 0000 00 OHP Sensor Drum Jam Sensor Fig 4 32 4 40 CD Control Block Diagram Fig 4 32 No Name of Control Description Sequence Control To control the print sequence of printer Temperature Control To control the temperature of fuser unit Toner Empty Sensing Control To control the toner empty status of each toner cartridges Operator Panel Control To control the operator panel indication and the operation signals Error Processing Control To sense the errors occurring in the printer and the stop procedures Interface Control To control the receipt and transmission of the interface signals from the external controller Laser Control To control the laser scanning and laser power 4 41 2 Laser Drive Control Circuit Laser Drive Control Circuit LDC consists of the video signal input circuit laser drive circuit laser diode output sensing circuit and output control circuit as shown in Fig 4 33 Operation CD When the video signal is inputted
157. on that the switch operates normally 7 46 7 5 1 2 Interlock Switch DSW2 for Paper Exit Unit Tools D Phillips Screwdriver 1 2 Disassembly Procedures D Remove the side cover LU See the item 7 1 1 2 Remove the top cover See the item 7 1 4 3 Remove the control fan assembly See the item 7 3 4 4 Remove the set screw BT3X8 1 pc and switch base from the control fan assembly S Remove the connector of paper exit unit Remove the switch from the switch base Assembly Procedures D Install a new switch to the switch base 2 After the above follow exactly the reverse order of disassembling procedures Precautions Caution Since the interlock switch is an important part for the safety confirm after installation that the switch operates normally 7 47 7 5 1 3 Interlock Switch DSW3 Tools CD Phillips Screwdriver 1 Disassembly Procedures Interlock Switch D Remove the side cover L See the item 7 1 2 2 Remove the transfer drum See the item 7 6 3 S Remove the set screw ST3X6 2 pcs of transfer electrode base 4 Remove the transfer electrode base 3 Flame Assy from the frame 5 Disconnect all the harness connectors connected with the interlock switch Remove the micro switch from the transfer electrode base Transfer electrode Ba
158. op cover See the item 7 1 4 S Remove the set screw ST3x 6 8 pcs of shield cover A 4 Remove the shield cover A S Remove the set screw ST3X6 8 pcs of shield upper Remove the shield upper 2 Remove the set screw ST3X 6 1 pc of shield cover B 8 Disconnect all the harness connectors 5 pcs connected with the MCTL Remove the set screw ST3X6 4 pcs of MCTL 0 Remove the MCTL Assembly Procedures D Assemble a new MCTL P W B 2 After above assembling follow the reverse order of above disassembling for set up Upon completion of above set up connect the power supply cable 4 Turn on the power switch of the printer 5 Execute the RAM clear in Service Mode Input content of RAM before replacement in Service Mode See the item 6 5 2 D Confirm the operation and print quality by implementing the test print 8 Input Information before Replacement to RAM of MCTL P W B as necessary Refer to item 6 4 39 FACTORY MODE for the details of input method Precautions D Read the information of NVRAM to replacing the MCTL P W B 2 When replacing the MCTL P W B pay a good attention so that no damage is caused due to electrostatic 7 16 Shield Cover Upper MCTL P W B Side Cover LU Side Cover L Shield Cover B Shield Case A Ass y Fig 7 13 7 17 7 2 2 OD1 P W B
159. or SL1 Rated Output of Laser Diode 5 mW Wave Length of Laser Beam Approx 785 nm Scanning Density 600 dpi Scanning Width 220 mm Rotations Per Minutes of Scanner Motor edetop TPM Number of Polygon 6 Mirror Faces 4 25 4 1 3 Paper Transportation System 1 Outline This printer employs the automatic paper feeding with the paper cassette When toner images are formed on the transfer drum through the operations of print system and transfer system a paper is fed by the pick up roller and transported to the registration roller The transported paper is further transported to the transfer fuser and exit part by the registration roller synchronizing with the rotation of the transfer drum Structure of of Paper Transportation System Fig 4 23 Paper Transportation System consists of following parts D Paper Cassette Case to accommodate papers to be automatically fed 2 Pick Up Roller Roller to feed paper one by one preventing multi feed 39 Registration Roller Roller to transport papers as synchronizing with the transfer drum 4 Transfer Part Print processing part consisting of transfer drum and transfer roller to transfer a toner image on to papers 5 Paper Discharger Unit Corona generator to generate AC corona for separating papers from the transfer drum Fuser Unit Mechanical part to fuse the toner image with the heat roller and fix it on the pap
160. ormal circumstances Bear in mind that execution of this mode is beset with loss of all the data in NVRAM Therefore all the data in NVRAM should be stored prior to executing NVRAM INITIAL Step Description of Procedures Message in LCD 39 FACTORY MODE Press Select key after selecting NVRAM INITIAL NVRAM INITIAL a gt b 46 NVRAM INITIAL Select YES if NVRAM should be executed gt YES NO If not select NO 2 Press Select key so that RAM INITIAL will be 39 FACTORY MODE executed All the data will be cleared b gt c gt DP CHECK Following modes shall be executed to set the RAM data 43 MARGIN ADJUST 44 LIFE PERIOD SET 45 NVRAM TUNE UP 3 47 TOTAL PAGE SET 48 EACH IMAGE SET When setting NVRAM TUNE UP LP TUNE UP to be set at 3 6 29 47 TOTAL PAGE SET This mode can reset the number of total pages on NVRAM whenever executing NVRAM INITIAL or replacing the MCTL PWB Step Description of Procedures Message in LCD 39 FACTORY MODE i Press Select key after selecting TOTAL PAGE SET a gt b gt TOTAL PAGE SET 47 TOTAL PAGE 012345 PSET Use Scroll key to designate or change the desired digit 39 FACTORY MODE 5 Use Select key to input values to the blinking digit gt DP CHECK Upon completing the input of values to be set use the scroll key to move the cursor t
161. ort of CHV socket part Clean the socket part Is F5 error cleared ue Job is complete NO Is F5 error cleared Replace the IOD1 or MCTL P W B YES Job is complete MCTL IOD1 HVU NO Replace the high voltage HVU yy Charger Unit cf 8 Error Code HO iwire cut short error of thermistor j Concerned Part Confirm the connection of a fuser unit connector Is the fuser unit properly installed Re install the fuser unit Is there any contact failure due to damaged connector of fuser unit MES Replace the charger unit or belt cartridge E Are the connectors properly connected between the fuser unit S wo Connect them properly and BCN of the high voltage unit HVU NO Is HO error cleared Job is complete Replace the fuser unit Is HO error cleared NO Replace the IOD1 or MCTL P W B ve Job is complete Fuser Connector Fuser Unit 8 Error Code H2 H3 H4 Concerned Part Fuser Unit and Others Confirm that a fusing heater is lit z NO T Is the fusing heater controlled for On Off Confirm the wiring and connector of the heater YES Is the line voltage to be the default value Confirm the input voltage Is the connector HP HN connected NO Connect them properly YES Confirm the rating and replace Is the rating of fusing heater correct NO the fusing heater Is the fuser unit properly installed Install it properly Ar
162. otton cloth Clean the charger wire and inside of charger case with a cotton applicator Install the charger unit to the transfer unit N CAUTION 4 Cleaning of Belt Cartridge Belt Cartridge shall be cleaned according to the periodic maintenance cleaning cycle set out in Table 5 3 N WARNING Do not expose OPC belt to the light of more than 800 luces ordinary office for more than 2 two minutes Do not touch the surface of OPC belt Tools to be prepared Wire Brush D Cotton cloth Unwoven fabric 2 3 pieces 2 Wire Brush Held by the clamp under the eaves of top cover behind front cover Cleaning Procedures Turn off the power supply switch 2 Open the paper exit cover 3 Open the front cover unit 4 Release the lock lever BC Belt OPC Belt Pull out the belt cartridge SUPE Clean the belt cartridge with a cotton cloth i Clean the rear side of belt cartridge Charger Unit ii Clean the corona wire with a wire brush Put the wire brush in the corona case and slide it to the arrow direction for several times iii Clean the belt cartridge case N WARNING Do not cut the corona wire when cleaning the corona wire Guide Wire Brush Corona Case Belt Cartridge Case Fig 5 7 5 10 5 Cleaning of Dustproof Glass in Optical Unit Dustproof Glass of the Optical Unit shall be cleaned according to the periodic maintenan
163. over 3 7 Fig 3 10 Fig 3 11 Cleaning Rolle Fig 3 12 Lock Lever 3 3 4 Test Run amp Test Print 1 Power On amp Off i Power On There is T mark on the power supply switch located on the side panel of the printer T represents the power supply switch with push on push off function Prior to connecting a power cable confirm that the push button top of power supply 1 switch located at the lower Power Supply Switch left front of printer projects from the cover surface This means that the printer is in the power off status Connect a connector of power supply cable to the printer Insert a plug of the power supply cable to the inlet Pressing the scroll keys left amp right and Free Size key push the push button top of power supply switch Next press the ONLINE key Then the display 4 of operator panel turns to be the status of a and MESSAGE LED lamp starts to blink This blinking means that the printer is in the warming up process MESSAGE LED lamp changes to be lit within 210 a Indication at Warming UP 5 seconds at max when screen b appears on the operator 00 READY JUPP panel display U LT 3 8 ii Power Off Push the push button top of power supply switch in order to shut off the power supply to the OE EAE ETA 1 printer TEMPI EE This switch is push on push off type
164. over remove the fuser fan case assembly ii Remove the fuser fan from the fuser fan case assembly eo N Fan Motor Fuser Fan Case Air Filter Assembly Procedures D Install a new fan motor to the paper exit Banca guide assembly 2 Install the paper exit cover to the paper Fig 7 26 exit guide assembly S Install the paper exit unit 4 After the above follow exactly the reverse order of disassembling procedures Precautions CD When installing the fan motor make sure that rating label of fan motor faces the exhaust side 7 34 7 3 6 Ozone Fan OZFAN Tools D Phillips Screwdriver 1 2 Disassembly Procedures Waster Toner Feeder Pipe D Remove the toner cartridge 2 Remove the side cover R See the item 7 1 3 S Remove the IOD2 P W B See the item 7 2 3 4 Remove the set screws ST3 X 6 2 pcs of developer gear unit See the item 7 3 2 Remove the developer gear unit See the item 7 3 2 Remove the set screws ST3 X 6 1 pc Ss Ozone Fan Case A ssy Exhaust Side of fan case Fig 7 27 a 7 Remove the ozone fan case assembly 8 Remove the fan motor from the ozone Ozone Fan Case iU j fan case Fan Moter Exhaust Side Assembly Procedures Ta D Install a new fan motor to the ozone fan case 2 After the above follow exactly the reverse order of disassembl
165. per Sensor PEL i556 dare oe dato ce de 23 7 2 Paper Size Sensor PSL and OHP Sensor OHPL 24 7 3 Paper Feeding Clutch PKCLL 25 7 4 Paper Feeding Roller LFU Separator Pad 26 Main Parts of Lower Feeder Unit 27 1 Outline of Product 1 1 Name amp Function of Each Component Paper Cassette Paper Guide Paper Feeding Clutch Connector Pin Signal Connector Cassette to feed paper automatically Cassette to guide paper from paper cassette to printer Clutch to transport paper from paper cassette Guide pin to connect printer engine with lower feeder unit Electric signal connector to activate lower feeder unit 2 Specification of Product 2 1 Rating Applicable Printer Hitachi Color Laser Printer SL1 Series Cassette Capacity er er add Letter Legal A4 Executive B5 Printable Media OHP Label 500 W x 484 D x 116 H mm 139 W x 134 5 D x 32 2 H inch Approximately 8kg 17 6lb 3 Assembly Procedures 3 1 Installation Conditions Installation conditions of lower feeder unit is the same as printer engine Laser beam printer is susceptible to the environment of installation location Printer may not be able to perform the expected function and operation if installed in an inappropriate location Therefore the following elements should be considered prior to deciding the installation location 1 Environmental Co
166. place the Switch Restore the deformed Lever Replace the Paper Exit Unit No Is Error Code 18 cleared Yes Complete Message CLOSE TR UNIT is indicated again Confirm if Transfer Unit is closed or not No Is Transfer Unit locked firmly Open and close the Transfer Unit Yes Yes Is Transfer Unit Lock deformed Replace the Transfer Unit No Is Error Code 18 cleared E Confirm the Interlock DSW3 Remedy the Interlock to be tight Connect the Harness properly Is the Interlock loose Replace the Switch No Is Error Code 18 cleared Complete Yes No Yes Is the Harness disconnected No Yes 8 1 2 Paper Transport Error Paper is transported through the path shown in Fig 8 1 Paper jam at the following locations is the user friendly for clearance e Paper Feeding Part Transfer Part Fuser Part Paper Exiting Part Paper Exit Roller Fusing Unit Oil Bottle Drum Cleaner Belt Cartridge Top Cover Paper Exit Unit Toner Cartridge Transfer Unit Paper Discharger Unit Transfer Roller Transfer Drum Paper Cassette Registration Roller Paper Feeding Roller Fig 8 1 1 Feed Jam Table 8 2 1 Problem Item P Check Item Result Corrective Action 1 Is the print paper a No Use a recommended recommended paper paper Print Paper Is the print paper humid eH 2 Has the paper been YES Replace the existing
167. placement materials Two or three pieces of cotton cloth for cleaning 2 Transfer unit one unit 4 Work Procedures Sequence of Disassembling D After pushing the push button top of power supply to turn the power off remove the power supply cord from the inlet 2 Open the back cover L Set Screw Fusing Transfer Unit Fig 5 21 5 20 Sequence of Replacement D o Remove the transfer roller Fig 5 22 B amp Fig 5 22 C Release the lock lever of transfer roller by turning it to the arrow direction A Fig 5 22 A Lock Lever i After lifting up the right end of transfer roller slide it to the right Install a new transfer roller to the printer Fig 5 22 D Fig 5 22 A i Have the hole of left end meet the projecting shaft ii Have the recessed hole of right end meet the shaft of lock lever Fix the transfer roller by turning the lock lever to the arrow direction B Fig 5 22 A T ES Shaft Fig 5 22 C Lever Transfer Roller Hole i Lock Lever Transfer Roller x P y Lock Lever Ab Fig 5 22 B Fig 5 22 D Sequence of Assembling D Q O Close the back cover L Plug the power supply cord to the outlet Push the push button top of power supply to turn the power on Upon completion of the warming up process clear the code OW by CLEAR CARE mode 5 21 5 2 4 Replacement of Paper Dischar
168. r OPC Aluminum Deposit Layer Insulator Material Fig4 6 4 1 1 Print System and Transfer System Fig 4 7 shows the basic structures of the print system having OPC belt as a main part and the transfer system having the transfer drum Color print is made by actuating the each processes in the print system and transfer system Y 6 OPC Belt Cleaning Print System Y OPC Belt 4 Transfer Drum First Transfer Transfer Drum K C M Y Y Transfer System Second Transfer Paper 9 Transfer Drum Cleaning Y 8 Paper Dischanging Y d Transport System Y Y Paper Exit Fig 4 7 Basic Structure of Print System 4 6 T Structure of Printer No Name of Component Part Process D Charger Charging 2 Optical Unit Exposing 3 Toner Cartridge Developing a Belt Cartridge Receiving of Image 5 Transfer Drum Transferring of Image 6 Belt Discharger Erase Lamp Discharging of Belt D Cleaning Blade Cleaning of Belt Transfer Roller Transferring 9 Paper Discharger Discharging of Paper 0 Drum Cleaner Cleaning of Drum D Fuser Unit Fusing 2 Paper Exit Unit Exiting of Paper q Fusing Unit Paper Exit TOM Paper Discharger Transfer Roller Transfer Drum Paper Pick Up Roller Transfer Unit 6 Erase Lamp 7 Cleaning Blade 1 Charger 4 7 Optical Unit Paper Cassette ID Basic Structure o
169. r Solenoid PSL KC Confirm the connection of Connector Is the connection proper between ECN3 of IOD2 and Solenoid PSL KC we Is the harness of Solenoid PSL KC broken Check the voltage at PSL KC ON N Does the voltage drop _ 74 between ECN3 13 and ECN2 8 ES NO Does the voltage jump between ECN1 6and ECN2 12 MES E Replace current MCTL P W B withanewP W B Is D6 Error cleared NO YES Connect the harness Connect the connector properly Is D6 Error cleared Es Complete NO Replace the front cover unit with a new unit Replace IOD2 P W B with a new IOD2 P W B Is D6 Error cleared Complete NO Re check MCTC IOD2 81 8 Developer Motor DM Is there any unusual rotation noise while printing YES Replace the toner cartridge YES Confirm the connection of connector Is the noise cleared NO Is ECN15 of IOD2 properly connected with connector of DM1 Replace developer gear unit and motor Is ECN1 of IOD2 properly connected with DCNO9 of IOD1 Connect the connectors properly Is ECN1 of IOD2 properly connected with I2CN of MCTL Is E1 error cleared TES Check the voltage 24V 1 and 5V 1 124V 1 Is the voltage 24V between DM1 4 and 5 ECN15 4 and 5 ECN2 5 and 8 y YES Replace the devel 45V 1 Is the voltage 5V between DM1 6 and 7 ECN15 6 and 7 ECN2 11 and 12 Her TB developer moe Replace the IOD2 Is E1 error clear
170. r Unit 7 7 1 Fusing Heater Lamp Tools D Phillips Screwdriver 1 2 Disassembly Procedures See the layout of fuser unit parts D Remove the set screw ST3X6 1 pc of F cover L and F cover L 2 Remove the set screw ST3X6 1 pc of F cover R and F cover R S Pull F terminal L of fuser roller side toward you and remove the fusing heater lamp 400W from F terminal 4 Pull out the fusing heater lamp 400W from the fuser roller inside Pull F terminal L of back up roller side toward you and remove the fusing heater lamp 300W from F terminal Pull out the fusing heater lamp 300W from the back up roller inside Assembly Procedures D Prepare a new heater lamp 300W 400W 2 heater lamps come in one set 2 Insert the heater lamp 300W into the back up roller 3 Support the electrode of heater lamp with the F terminal R and L at the back up roller side 4 Insert the heater lamp 400W into the fuser roller Support the electrode of heater lamp with the F terminal R and L at the fuser roller side Install F terminal L and F terminal R Precautions r Caution Item Do not touch the surface of heater lamp with dirty hands Capacity of the heater lamp is different between the fuser roller side and back up roller side Each capacity is marked on the insulator of lamp s electro
171. r passes between the heater roller and back up roller 4 Each roller is heated up to approx 140 C and received approx 156N from the opposite heat roller 5 When the paper carrying the toner images passes between the tow heat rollers the toner images are melted and fused on the transported papre The paper carrying the fused image is separated from the heat rollers and ejected from the printer P a Before Fusing aper Fixed Toner b After Fusing 4 29 4 2 Structure of Control System 4 2 1 Basic Structure 1 Electrical System and Function Most of main electrical parts of this printer is controlled by MCTL P W B Structure of Sequence Control Basic structure of the sequence control is exhibited in Fig 4 27 D Print Process Control 2 Laser Output Control 3 Fuser Temperature Control 4 Toner Sensing Control 5 Interface Control Video Signal Operator Panel Indicator CD Error Control To control the print process from the paper feed through paper exit To control automatically the laser output to the default To control the fuser heater so that temperature of fuser roller and back up roller will be the default To control the sensing procedures of toner empty status To process the input and output signal with the external controller host To display the printer operation status in the operator panel indicator To control the sa
172. rd Error of MCTL 1 Failure of MCTL P W B 1 Turn on and off the power switch Control Circuit 2 Replace the failed MCTL P W B with a new MCTL P W B Does the error repeat despite of implementing On Off of Power Switch YES Replace the failed MCTL P W B with a new MCTL P W B Continue to drive the engine LL 8 Description of Error Cause of Error Clearance Method 1 Power Feeding Failure 1 Implement the same clearance procedures employed for E2 error Process Timing Error 2 MM Failure Note MM stands for OPC Belt Drive Main Motor 3 MM Input Circuit Failure Implement the same clearance procedures employed for E2 error A m Error Code D1 Name of Part Developer Clutch DCLY Confirm the connection of Connector Is the connection proper between ECN17 of IOD2 and Clutch DCLY YES Check the voltage at DCLY ON N YES Does the voltage drop amp 4 between ECN17 3 and ECN2 8 NO YES Does the voltage jump _ between ECN1 1 and ECN2 12 Replace current MCTL PWB with a new P W B Is D1 Error cleared YES Is the harness of Clutch DCLY broken NE NO Connect the harness Connect the connector properly Is D1 Error cleared NO Replace the clutch DCLY with a new clutch NO MCTL Replace IOD2 PWB with a new IOD2 P W B Is D1 Error cleared AXES Complete IOD2 424V 1 Developer Clutch Y 1
173. re E dr a naaa 7 41 fub Transfer Solenoid sss sasa si siei E a a e a a uet Ed Re ees 7 42 7 4 7 Drum Cleaner Solenoid 0000 eee eee ee 7 44 7 5 Replacement of Sensor cere eee a ecb enews wae eee ead we ce 7 45 7 5 1 Interlock Switch Front Top Real ses ceneenckiaceuse sue 7 46 7 5 2 Paper Sensor Paper Feeding Sensor PT1 7 50 7 5 3 Paper Sensor Paper Exit Sensor PT2 44 7 52 7 5 4 Paper Empty Sensor PE OHP Sensor OHP 4 59 7 5 5 Paper Size Sensor PSU 22csstceecawe eee RR REDE REA RUE 7 55 7 5 6 Drum Jam Sensor DPJ c2c5642484 chet RE seen eenedd PER PORE 7 56 Lg OWMSCNSOVOIE Ludi aoe i a eee dr e eae eee a e a eee BE BOR b Ee 7 57 7 5 8 Drum Encoder Sensor EN ieu tas ede diuerease ns eeoee 7 58 7 5 9 Belt S ns r PBS cn eres m eassa mae nate sonny A eb uti 7 59 7 5 10 Waste Toner Sensor WST zasesues SERE RU EE GG EE BEER ER RE 7 60 7 5 11 Toner Sensor Assembly TPD TTR 2 000000 eee eee 7 61 7 6 Replacement of Roller and Drum 2 0222000000 7 63 7 5 1 Transfer UMi 2 32 ed edu so RCRUM ee dre dr Lad du dep es 7 63 7 6 2 Register Roler oss ees eet RR eee med ue Se EX ete Wes x 7 64 25 95 Transfer DMs aco parer Soca Geena wo RT RF ERES ARR E E EEA E sees ES 7 65 7 6 4 Paper Feed Roller Separator Pad llll sss 7 67 7 5 3 Front Cover lb aues eed Eo Ea E ERE TR EAE CHE EQUExGE dpe 7
174. rewdriver 1 Disassembly Procedures D Remove the side cover R See the item 7 1 3 2 Remove all the connector of registration clutch connected with IOD2 P W B Remove the C ring from the shaft 4 Pull out the registration clutch from the shaft Assembly Procedures D Install a new registration clutch to the shaft 2 Install the C ring to the shaft s groove and fix the registration clutch S Connect the connector with the IOD2 P W B 4 After the above follow exactly the reverse order of disassembling procedures Precautions 7 38 Registration Clutch C ring Fig 7 30 7 4 3 Fuser Clutch FUCL Tools 1 Phillips Screwdriver 1 2 2 Slotted Screwdriver 1 Disassembly Procedures D Remove the side cover R See the item 7 1 3 Remove the connector connected with IOD2 P W B 3 Remove the C ring from the shaft 4 Pull out the fuser clutch from the shaft N Fuser Clutch p ring Fig 7 31 Assembly Procedures D Install a new fuser clutch to the shaft 2 Install the C ring to the shaft s groove and fix the fuser clutch 3 Connect the connector with the IOD2 P W B 4 After the above follow exactly the reverse order of disassembling procedures Precautions 7 39 7 4 4 Cleaner Clutch FBCL Tools 1 Phillips Screwdriver 1
175. rface of drum cleaning roller is scavenged by the cleaning blade and collected to the waste toner pack by the waste toner feeder 4 22 Cleaning Brush Cleaning Roller i Residual Toner FCBV Waste Toner Feeder Drum Claening Unit FCBV Cleaning Roller Transfer Drum Power Supply for cleaning Roller Bias Fig 4 22 4 23 4 1 2 Optical System This printer employs a semiconductor laser diode as a light source This laser diode is controlled by the fast switching according to transmitted image data video signal The generated laser light scans over the OPC belt through a polygon mirror and lens by which electrostatic latent images will be formed on the OPC belt 1 Structure of Optical System Fig 4 23 Optical unit is located as shown in Fig 4 23 Optical unit consists of following parts D Laser Unit Light emitting source incorporating a laser diode 2 Cylinder Lens Condenser of laser beam S Polygon Mirror Hexhedral mirror scanning the laser beam D F 0 Lens Focus lens for laser beam Scanner Motor Motor to rotate the polygon mirror Mirror Reflecting mirror for the laser beam path D LDC Laser diode control circuit 8 PD Photo detector 9 BTD Mirror Beam timing detector mirror to guide the laser beam to PD 2 Specification Specification of Optical Unit is described as follows Item Specification f
176. rgin Leading edge A B 2 x Default Value 4 0 4 1 5mm 3 Measure the position C and D of top margin Left edge C D 2 x Default Value 3 041 5mm If the specification value is not met implement the adjustment i Execute 43 MARGIN ADJUST in the FACTORY MODE After above adjustment 4 execute GRID PRINT and confirm the margin Leading dedge Left margin Paper feeding direction fig 6 14 6 32 6 5 2 Setting of RAM Data As Data in the RAM has been preset to the optimum value at the ex work it is not necessary to change the preset value under the normal condition However fine adjustment may be required subject to the media or operational conditions 1 Purpose Print quality can be improved by changing the preset value in the RAM 2 Procedures of Setting i Follow the procedures set out in 6 4 Service Mode ii Select RAM TUNE UP mode ili Select the desired TUNE UP mode iv Adjust the preset value to the appropriate value step v Implement the test print to confirm the print quality 3 Subject TUNE UP Mode Mode Subject of Adjustment Purpose LP TUNE UP Adjustment of laser power Optical density THV TUNE UP Adjustment of transfer voltage Transfer efficiency DBV TUNE UP Adjustment of developer bias Optical density CBV TUNE UP Adjustment of OPC belt bias Optical density FBV TUNE UP Adjustment of cleaning roller bias Drum cle
177. rming up process the ME d 4 desired pattern of selected color will be continuously printed d 31 GRID PRINT Y M C K R G B Print operation is suspended by press ie Nag gt e 5 If it is desired to return to the previous screen SERVICE MODE message press Clear key one more time e gt d TEST PRINT 01 WAIT 6 If it is desired to return to ONLINE mode press U ONLINE key f gt g 32 NEXT CARE INFORMATION Information relating to the replacement timing of periodical replacement parts can be obtained namely the number of motion images and printouts Procedure Step Description of Procedures Message in LCD Press Select key after selecting Screen a NEXT CARE INFO a b Using Scroll key select the care code of desired information 2 Fuser Cleaning Roller FC 7 Belt Cartridge BL 8 Fuser Unit FU 9 Replacement Kit by every 120K 120K b After selecting the desired information s code press Select key Then number of images or printouts corresponding to the selected code is displayed b gt c through f Screen c through f can be cleared by pressing the Clear key f e d c gt b Press the Clear key one more time at the screen b to return to the service mode b gt a SERVICE MODE NEXT CARE INFO 32 NEXT CARE No A 2 3 4 5 6 7 8 9 gt NEXT
178. rrective Action Print Paper 1 Is the print paper a NO Use a recommended recommended paper paper Paper Exit Is the paper exit unit firmly Open and close the 1 NO a ote Unit locked by the lock lever paper exit unit again P Procedure Number 8 6 8 2 Printer Error If errors or failures occurred inside the printer the applicable error message will be displayed on the operator panel and the printer stops If errors or failures would repeat even after pressing the clear switch confirm the error code and then call for the service of maintenance company nearby Confirm the error message Press the CLEAR switch Error occurs again Since this is a temporary error Call the maintenance you may use the printer company for service i without corrective action 8 7 Table 8 1 Error Code 1 2 No Code Description 1 C3 NVRAM Error MCTL P W B 2 C4 Engine Controller MCTL P W B Hardware Error 3 C7 Process Timing Clock Error Main Motor Clock Error 4 D1 Clutch Error of Yellow Developing Unit 9 D2 Clutch Error of Magenta Developing Unit 6 D3 Clutch Error of Cyan Developing Unit 7 D4 Clutch Error of Black Developing Unit 8 D5 HPSI Signal Error Retract Error of Black and Yellow Toner Cartridge 9 D6 HPSI Signal Error Retract Error of Cyan and Magenta Toner Cartridge 10 E1 Developing Motor Error 11 E2 Main Motor Error 1
179. rum Cleaner Fusing Unit OPC Belt Cartridge Cleaning Roller Cleaning Brush Waste Toner Feeder 3 D Separator Pawl Transfer Unit Foreign 2 Paper Discharger Uni Particles nit Transfer Drum Transfer Roller Transfer Drum 1 D Guide Paper Feeding Roller Countermeasures 1 Clean the paper discharger unit See Section 5 1 2 3 2 Clean the D guide and D separator pawl 3 Remove the drum cleaner and then clean the inside and outside of waste toner feeder 8 47 No 11 Vertical Staggering Image Phenomenon Printed image staggers in the vertical direction as shown in the print sample of upper right corner Main Causes 1 Shock or vibration is applied to the printer 2 Failure of the optical unit Vibration from the rotation of scanner motor Optical Unit Front Cover Unit Countermeasures 1 Do not apply shock or vibration to the printer body 2 Installation location should be appropriate No concern about shock or vibration 3 Replace the optical unit with a new unit See Section 7 3 3 8 48 No 12 Banding Phenomenon Banding line appears in the horizontal direction as shown in the print sample of upper right corner Main Causes 1 This is a transfer failure due to the uneven rotational speed caused by the shock which occurs when the seam of OPC belt passes over the cleaning blade OPC Belt Cartr
180. s D Phillips Screwdriver 1 2 2 Slotted Screwdriver 1 Disassembly Procedures D Remove the side cover R See the item 7 1 3 2 Remove the IOD2 P W B See the item 7 2 3 8 Remove the main gear unit See the item 7 3 1 4 Remove the set screw ST3x 6 2 pcs of tension solenoid S Remove the tension solenoid Assembly Procedures D Install a new tension solenoid 2 After the above follow exactly the reverse order of disassembling procedures Precautions 7 42 pe A Top Cover c Ozone Fan Duct Side Cover L o 2 s E c Fuser Clutch Cleaner Clutch Main Gear Unit IOD2 P W B Paper Feeder Clutch Base Cover R Fig 7 34 7 43 7 4 7 Drum Cleaner Solenoid FBSOL Tools D Phillips Screwdriver 1 2 2 Slotted Screwdriver 1 Disassembly Procedures D Remove the side cover R See the item 7 1 3 2 Remove IOD2 P W B base See the item 7 2 3 8 Remove the main motor gear unit See the item 7 3 1 4 Remove the set screw ST3x 6 2 pcs of drum cleaner solenoid Remove the drum cleaner solenoid Assembly Procedures D Install a new drum cleaner solenoid 2 After the above follow exactly the reverse order of disassembling procedures Q Upon completion of the installation connect the power supply cable Turn t
181. s Select key after selecting DP CHECK 39 FACTORY MODE a gt b gt DP CHECK 40 DP CHECK 1 Y M C K Using Scroll key select the desired color and then gt 2 press Select key Ex yellow color b gt c 40 DP CHECK Y GOOD When the yellow toner cartridge is driven and no error is observed by the toner sensor Good will be 40 DP CHECK displayed on the panel otherwise Fail 3 c D Y MC K Operation of the toner cartridge will be halted automatically after 60 seconds FACTORY MODE c gt d DP CHECK 4 Press the Clear key to stop the DP CHECK mode d Press the Clear key one more time to return to the status of screen a d gt e 41 BD CHECK Laser beam position and laser power can be confirmed Procedure Step Description of Procedures Message in LCD Press Select key after selecting BD CHECK of PATUR E MORE i a gt b BD CHECK 41 BD CHECK Scanner motor scans the laser beam as rotating GOOD If the scanning position of laser beam is normal 2 GOOD is displayed in the LCD otherwise FAIL b or c 41 BD CHECK Scanner motor automatically halts to rotate 60 seconds after initial rotation d FAIL 39 FACTORY MODE 3 Press the Clear key to stop the BD CHECK mode DP CHECK b gt d 6 19 42 FU CHECK Availability of oil in the fuser unit
182. se Assembly Procedures D Install a new interlock switch to the transfer electrode base 2 After the above follow exactly the reverse order of disassembling procedures Precautions s A N Caution Since the interlock switch is an important part for the safety confirm after installation that the switch operates normally 7 48 7 5 2 Paper Sensor Paper Feeding Sensor PT 1 Tools D Phillips Screwdriver 1 Disassembly Procedures D Remove the transfer drum See the item 7 6 1 2 Remove the set screw ST3X 6 2 pcs and the paper guide UR assembly S Unlock the paper feeding sensor from the rear side of the hole where the paper guide UR has been removed 4 Remove the paper feeding sensor from the stay feeder Disconnect the all the connectors connected with the paper feeding sensor Assembly Procedures D Install a new paper feeding sensor to the stay feeder 2 Connect the harness connectors with the paper feeding sensor 9 After the above follow exactly the reverse order of disassembling procedures Precautions 7 49 Fixing Metal ransfer Unit Paper Sensor PT1 Paper Guide Paper Guide UL Fig 7 40 7 50 7 5 3 Paper Sensor Paper Exit Sensor PT2 Tools D Phillips Screwdriver 2 Disassembly Procedures D Remove the p
183. so that display changes from screen b to c Select GRID or STRIPE pattern with scroll key GRID to be selected 5 Press SELECT key so that display changes from screen c to d 6 Select the color to be printed with scroll key R to be selected 7 Press SELECT key so that display changes from screen d to e Warming up starts and continuous print will be automatically carried out upon completion of the warming up 9 Printing operation will be suspended by pressing CLEAR key and display changes from screen e to f 0 Printer will be returned to ONLINE mode by pressing ONLINE key and display changes from screen f to 9 Indication of Operator Panel 00 READY U op L I SERVICE MODE TEST PRINT NEXT 31 TEST PRINT gt GRID STRIPE 31 GRID PRINT Y M C KIR G B 31 GRID PRINT R U WS I Continuous Print 31 GRID PRINT gt Y M C K R G B iii Selection of Media Pressing the media select key on the operator panel select the suitable process for the media to be used When the media select key is pressed the media lamp changes as follows Condition of Media Lamp Selected Media Lit Out Ordinary Paper Blinking Stock Paper Label Lit OHP Sheet iv Operator Call When Operator Call is indicated on the operator panel see Operator Call column in Sub section 8 1 1 and take necessary actions accordingly 3 12 3 On
184. ssembly Procedures IOAPO e Remove a side cover L No tool is necessary Remove a base cover L Remove screws BT4X8 2 pcs Remove the front cover LFU Remove screws ST3X6 2 pcs Remove a set screw BT3X8 of cassette guide L assembly Pull a cassette guide L toward you from the cassette side and unhook it Take out a cassette guide L assembly from a frame Remove a paper size sensor from a cassette guide L assembly by removing screws BT3X 8 2 pcs Remove a connector for a paper size sensor Assembly Procedures Q Install a new paper size sensor to a paper guide L assembly Assemble other pieces according to the reverse sequence of disassembling 24 7 3 Paper Feeding Clutch PKCLL Necessary Tool Q Phillips Screwdriver 1 and 2 Disassembly Procedures OOOO 9o Remove a side cover R No tool is necessary Remove a base cover R Remove screws BT4X8 2 pcs Remove a back cover LFU Remove screw BT4X8 1 pc Remove a harness connector of paper feeding clutch Remove a clutch cover Remove screws ST3X 6 1 pc In this instance care not to let the spring installed to clutch cover come off Remove a stopper ring nylon from a paper feeding clutch shaft Remove a paper feeding clutch from a shaft Assembly Procedures Q Incorporate a new paper feeding clutch to a shaft Fix a new paper feeding clutch with a stopper ring Assembl
185. t into the machine and cause serious injuries Note that the exit roller ejecting printed papers is rotating while printing Be careful not to get your hairs fingers hands and sleeve or necktie caught in the machine while operating the machine Follow Safety Instructions continue N CAUTION HAZARDOUS POWDER Toner is fine powder to cause powder explosion if dumped into the fire Strictly refrain from dumping toner into the fire for disposal N CAUTION HAZARDOUS POWDER Toner is fine powder to cause troubles to eyes and respiratory organs if inhaled Handle carefully toner cartridge waste toner pack and developing unit not to spread the toner N CAUTION POWER CORDS amp PLUGS This printer is equipped with 3 wire power cords and 3 pronged plugs bi polar plug with grounding for the user s safety Use these power cords in conjunction with properly grounded electrical receptacles to avoid an electrical shock N CAUTION SAFETY INTERLOCK Cover and Paper Delivery Unit of this printer have electrical safety interlocks to turn the power off whenever they are opened Do not attempt to circumvent these safety interlocks vi CONTENTS PREFACE and SAFETY INSTRUCTIONS OUTLINE OF PRODUCT SPECIFICATIONS OF PRODUCT INSTALLATION STRUCTURE OF EACH COMPONENT SYSTEMS PERIODIC MAINTENANCE OPERATION AND ADJUSTMENT OF OPERATOR PANEL REPLACEMENT OF MAINTENANCE PARTS TROBLESHOOTING PARTS LIST 1
186. te is OHP 7 Drum Paper Jam DPJ Photo sensor to detect that paper is Sensor winding around the transfer drum Photo sensor to detect irregular rotation Drum En r 8 E code EN of the transfer drum Photo Belt Sensor Photo sensor to detect the connecting j PBS position of the OPC belt 10 Toner Detecting Sensor TPD TTR Photo sensor to detect if the toner is empty or not for each toner cartridge 11 Waste Toner Sensor WTS Photo sensor to detect that the waste toner bottle is full of waste toner 42 Developing Photo GHP1 Photo sensor to detect the early position Sensor GHP2 of toner cartridges 13 Cleaning Roller CRS Photo sensor to detect if the cleaning Sensor roller is available or not in the fuser unit for Fuser unit temperature 4 38 Layout of Sensors 14 Temperature Sensor Saber Est engon for Fuser Unit 7 Drum Paper Jam e Sensor 13 Cleaning Roller Sensor gt lt 5 0il Sensor EN 9 Phot Belt Sensor P 8 Drum Encoder aes 6 OHP Sensor 2 Paper Feeder SS Sensor 4 Paper Sensor MEN 1 Paper Size Sensor z 10 Toner Detecting ZZ Sensor gt 12 Developing Photo Sensor 7 11 Waste Toner Sensor Fig 4 31 4 39 4 2 2 Control System 1 Control of Print Process Micro CPU mounted on the MCTL P W B controls the print processes Print Sequence Diagram Cooling Operator Fan Panel Scanner Motor Belt Drum ATC 4 pos Se ee E Sequential Control Thermal Control Laser Contr
187. ted from the transfer drum and subsequently transported to the fusing fixing process Paper Dischrger Transfer Roller Fig 4 21 4 21 Drum Cleaning Drum Cleaning Process means that the residual toner on the transfer drum is removed 1 Structure of Drum Cleaning Fig 4 22 D Drum cleaning unit is located as shown in Fig 4 7 2 Drum cleaning brush is a semiconductor type fur brush to clean the surface of transfer drum as rotating However the cleaning brush stays away from the transfer drum while imaging on the transfer drum S9 Drum cleaning roller is positively biased by the positive voltage FCBV V o FCBV V is injected to the cleaning brush as well and the cleaning brush is self biased by the resistance of brush Drum cleaning roller rotates as contacting to the drum cleaning brush 2 Process of Belt Cleaning Fig 4 22 D There is the residual toner on the surface of transfer drum after the paper transfer process 2 Drum cleaning brush is positively self biased Drum cleaning brush has the negatively charged residual toner fall off from the surface of transfer drum and electrically absorbs the residual toner into the drum cleaning brush S Drum cleaning roller has been biased to the positive FCBV V the residual toner absorbed into the drum cleaning brush is attracted by the positive FCBV V is adhered to the surface of drum cleaning roller 4 Waste toner adhering to the su
188. tenna 2 Give more clearance between the equipment and receiver 3 Connect the equipment into the outlet of other circuit which is different from the one being used for the receiver 4 Consult the dealer or experienced radio television technician for help Canadian Compliance This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications Le presnt appareil numerique n emet pas de bruits radioelectriques depassant les lim ites applicables aux appareils numeriques de la Class B prescrites dans le Reglement sur le brouillage radioelectrique edicte par le ministere des Communications du Canada Product Safety Laser Product SL1 is certified as a Class 1 laser product and complies with DHHS Laser Radiation Standards 21 CFR Chapter 1 Subchapter J CLASS 1 LASBR PRODUCT APPAREL A LASER DE CLASSE 1 LASER KLASSE 1 PRODUKT Use of controls adjustments or performances of procedures other than those specified in this Manual may result in hazardous radiation exposure SL1 is provided with the ozone filter in order to reduce exhausted ozone in compliance with Product Safety Standards Ozone filter must be replaced with new filter yearly otherwise it may cause strong odor which will likely have ill effects to bronchial tubes Therefore this periodical replacement with new filter must be
189. ter continue Install a metal fixture of the left side as viewed from the front side of printer engine i Confirm that there are metal fixtures 2 pcs and knob screws 2 pcs in the bag packaged in the same box of LFU i Hook the leading edge of fixture to the printer engine base ii Tighten the knob screw to fix the fixture Printer Engine Base Cover LFU Lower Feeder Unit Knob Screw Fixture 15 3 3 Assembly Procedures 1 Installation of Lower Feeder Unit LFU to Printer continue 6 Following above procedures implemented for the left side Install the metal fixture of the right side as viewed from the front side of printer engine Knob Screw 3 3 Assembly Procedures 2 Installation of Connector Cable to Printer Engine D Remove LF connector cover U from the rear side of printer engine N SR 7x Sm LF Connector Cover P LFU Signal Connector 2 Connect the LFU signal connector to the connector of printer engine side A Caution e Push the LFU signal connector into the connector of printer engine side until it clicks locked Install the LFU connector cover as a connector cover of printer engine side 8 Install the LF connector cover U of printer engine as a connector cover of the LFU 17 3 3 Assembly Procedures 3 Installation of Cover D Install the side cover
190. the paper bag until using the papers 2 3 Table 2 2 Characteristics of Hitachi Recommend Paper OHP Sheet and Label Media Paper Paper Hammermill Label OHP Sheet SPHINX Item Xerox 4024 Laserprint white Avery 5260 Auto Fil 1914 Basis Weight g m 75 4 90 4 16327 142 4 90 4 Thickness U m 102 6 105 6 18447 11046 125 10 Smoothness Bekk 3544 12020 20 6 500 100 22 10 Stiffness Clark 100415 90 15 65 15 56 15 70 20 Surface Resistance 10 1000 5x x10 Q 10 100 10 100 1 100 10 1000 x 1 100 L 94 2 9442 9342 in 2 8096 a 0 441 053 1 epeqp o qe L a b Transmittance b 1 61 2 2 1 4 5 1 Brightness 80 2 85t2 7743 8215 Grain Direction Long Long Long eee ees eee xx Printed Side gt Back Side Measurement Condition 17 5 27 0 C 50 70 RH 2 3 Environmental Condition 1 Ambient Temperature Humidity Altitude a Under Operation 10 0 32 5 C 20 80 RH See the figure below I ftc zl gt ak i Recommended Condition f 17 5 27T I 50 70 RH c o a E 0 10 17 5 20 27 30 32 5 40 Ambient Temperature 1C b Under No Operation 5 0 35 0 C 10 8096 RH See the figure below Ambient Humidity RH 05 10 20 30 35 40 Ambient Temperature C 2 5 c Storage and Transportation Environment of Printer The following defines the storage and transport
191. tor Call Message LED is lit and applicable messages appear on the liquid crystal display LCD in the following cases Consumables to be replenished Waste toner pack being full of waste toner Paper jam Periodic maintenance Maintenance work being incomplete In case that operator call is not cleared STEGNE xe n rrr rr a Usually the above cases are not regarded as a breakdown but treated in accordance with Table 8 1 If the operator call is still indicated after the treatment breakdown is occurring Check the printer in accordance with 6 In case that operator call is not cleared 8 1 1 Operator Call Table 8 1 Subject of Operator Call Countermeasure Code Message of Display NO MEDIA UPP LOW No paper in the upper cassette Replenish papers No paper in the lower cassette 11 CHK MEDIA UPP LOW Change media Inconsistency of media NO TRAY UPP LOW 12 No upper paper cassette Install cassettes No lower paper cassette 13 REFERGE TONE PEYO Replace with new toner cartridges Toner Y M C K empty P ges CHECK WASTE TONER Waste toner pack full of toner Replace with new waste toner pack CHECK FUSER OIL s About time to change oil bottle PEP aCe NI ag WO DOWIE COSC EEA NE EOE Replace with new cleaning roller About time to change cleaning roller p 9 j MISPRINT e Confirm with status of paper cassette 15 PAPER PRR
192. ty needs to be adjusted Adjustment is to adjust the developer bias voltage against the reference value O zero in the range between the step 4 and 4 Step Description of Procedures Message in LCD Press Select key after selecting NVM TUNE UP 39 FACTORY MODE a gt b NVM TUNE UP 45 NVM TUNE UP 2 After selecting DBV TUNE UP Code 3 press Select key b gt c 5No 2 123456789 45 DBV TUNE UP After selecting the color to be tuned up press 3 Select key Ex Magenta c gt d purer 45 MAGENTA Tune Up value can be adjusted within 8 steps between the step 4 and 4 42 0 1284 After selecting a given number press Select key d gt e 45 DBV TUNE UP 5Y M C K Press the Clear key to wrap up the tune up work 5 for Magenta d gt e 45 NVM TUNE UP Repeat the step 3 through 5 for each color No 2 123456789 Press the Clear key to wrap up the DBV tune up 6 work e gt f 6 26 45 4 CBV TUNE UP This mode shall be used when the image defects attributing to OPC belt need to be improved Adjustment is to adjust the OPC belt bias voltage against the reference value 0 zero in the range between the step 4 and 4 Step Description of Procedures Message in LCD i Press Select key after selecting NVM TUNE UP 39 FACTORY MODE a gt b gt NVM TUNE UP 45 NVM TUNE UP After selecting CBV TUNE UP Code
193. unit the warning code FU appears in LCD of the operator panel Purpose of Replacement To prevent the print quality from declining due to the deterioration of fusing unit s roller 3 Precaution WARNING Label Hal surface fund colaci Surface chaude Eviter loul earlact Hebe obearfiache Bai beseilipung N WARNING Fusing unit and its perimeter parts are very hot Make it sure prior to starting the replacement work that the fusing unit and its perimeter parts are well cooled down otherwise you may get burned 4 Necessary tools and replacement materials D Two or three pieces of cotton cloth for cleaning 2 Fusing Unit one unit 5 Work Procedures Sequence of Disassembling D After turning the power switch off unplug the power supply cord from outlet 2 Open the paper exit unit 5 17 S Remove the metal fixture of fusing unit i Open the back cover L ii Place a paper on top of transfer drum surface to protect the transfer drum surface iii Loosen the set screw of both left and right side so that the hook of metal fixture comes off from the base of fusing unit Fig 5 16 4b Holding the handle provided at both sides of fusing unit remove the fusing unit Set Screw Fusing Transfer Unit Fig 5 17 N CAUTION When removing the fusing unit take care to keep the unit in good level so that no oil leak
194. upon request of customer or at periodic maintenance 2 After the replacement confirm the improvement of print quality failure by test print 5 28 6 Operation and Adjustment of Operator Panel 6 1 6 2 6 3 6 4 6 5 Panel E3UDUE 2 geeet eaa Enn aa e a S dd sor ed 6 1 Configuration of Operational Mode n anaa aaa aaa 6 2 Motion and Operation of Normal Mode seasann naaa aaea 6 4 Operation of Service Mode 00000 cee ees 6 9 Operation Procedures of Adjustment 2000 eee eee 6 32 6 5 1 Adjustment of Left Margin sse mmm mm Rem ee es 6 32 6 5 2 Adjustment of RAM Data llssllelllseellesn 6 33 6 5 3 Initialization of RAM sis eso 08a eee ew ca Rom mmc 6 34 0 5 4 Setting of Total Pages eee min Rn Romano e Ree e x 6 34 6 5 5 Setting of Number of Images 262 556 RR ER RR 6 35 6 Operation and Adjustment of Operator Panel 6 1 Panel Layout Description LCD 16 characters by 2 lines Message LED Online LED Media LED Online Key Media Select Key Free Size LED Red Free Size Key Clear Key Select Key Scroll Key Left OG e amp e e c e e ee jvc Scroll Key Right 6 1 6 2 Configuration of Operational Mode This printer has the various functions set out in the table 6 1 for the users to easily understand the operation status of printer engine during
195. ve the base cover R 12 Remove the fan duct of power supply 9 Disconnect all the harness connectors connected to the power supply unit 14 Remove the set screw ST3X6 2 pcs of power supply switch from the switch base 15 Remove the metal fixture for switch Remove the set screw ST3X 6 2 pcs of power supply switch from the switch base 1 Remove the rear cover See the item 7 1 8 18 Remove the inlet from the frame 9 Remove the set screw M4 x6 1 pc with spring washer of earthing harness 9 Remove the set screw ST3X 6 8 pcs of power supply unit 9 Remove the power supply unit Power SUPEI LNI Assembly Procedures D Install a new power supply unit projection oie When installing have a lower hole of the power supply unit meet a projection of the base 2 locations left and right 2 After installing the new power supply unit follow exactly the reverse order of disassembly procedures Upon completion of the installation reconfirm the earthing wires are provided to the frame 4 Connect the power supply cable Turn the power supply switch ON Execute the test print in Service Mode to confirm the operation and print quality 7 22 Precautions N WARNING Earthing wire is very important to secure the safety of users Upon removal of the power supply unit confirm that the earthing wires green and yellow color is securely connected to the D part A

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