Home

Service Manual

1. Motor PLUNGER LED HEAD n CN2 HEAD CN1 1 P n 5V OV Motor Driver EEPROM MTD2007F 4kb A CPU Serial I F 8 5005 Parallel DRAM Bus Data 8 Address 10 lt ML60851 OSC USB Y 16 2 HC244 26V 5V OV OVP i CN7 CN4 CN5 High Voltage Power Unit High Voltage Power Unit Power Supply Unit T P6L AC 120V 230V ID Unit Heater Halogen Lamp Figure 2 1 Block Diagram 41701301TH Rev 1 11 2 1 Main Control Board The main control board consists of a one chip CPU include a program ROM a DRAM an EEPROM a host interface circuit and a mechanism driving circuit The mechanism driving circuit consists of a LED head a main motor and an electromagnetic clutch 1 One chip CPU include a program ROM The one chip CPU is a custom CPU 16 bit internal bus 16 bit external bus 16 MHz clock incorporating mask ROM and CPU peripheral devices This CPU has the functions listed in the table below DRAM controller Controls DRAM DMA controller Transfers image data from Parallel I F and USB I F to DRAM from DRAM to a video output port and between CPU and DRAM Parallel interface controller Controls the parallel interface Video output port Controls LED head LED STB output port
2. Feed roller Paper sensor paper Paper feeding direction gt Toner t sensor pping Assy _ roller Paper sensor manual feed 41701301TH Rev 1 69 4 Heat assy error Turn the power supply off then on again Does the Halogen lamp of the heat assy go on No Is the Halogen lamp or thermostat disconnected Yes Replace the heat assy No Replace the power supply unit Y ves Are the CN7 connectors of main control board and the power supply unit connected correctly No Connect the CN7 connectors correctly Y ves Replace the main control board 41701301TH Rev 1 70 6 5 3 Image Troubleshooting This section explains how to troubleshoot when an image problem is output as a result of the printing Figure 6 3 is an example of image problem output Symptom Flowchart No An image is light or blurred entirely Figure 6 3 A Dark background density Figure 6 3 B A blank paper is output Figure 6 3 Vertical block belt black stripe Figure 6 3 D Cyclical defect Figure 6 3 B Print void Poor fusing An image is blurred or peeled off when it is touched 9101009 Vertical white belt white stripe Figure 6 3 F Light or blurred Dark background images entirely density D Black v
3. pue 0 Jaded Hulpae 10 9 01195 1 uy jenuew Wdd 9 01195 Ajjnjaos0 aq dojoAue uy 01 INOO Uo1euo N 9v SV SIf e e697 CO J 9100 8 8 8 8 wn Aneay wn unpa wnipey dHO AneayH wnipayy wnipay wnipeyy adh enuey BuipeeJ INdd uun peeds 28 9 7 30 41701301TH Rev 1 3 PARTS REPLACEMENT This chapter explains how to replace parts assemblies and units in the field The replacement procedures to be explained here include dismounting not mounting When mounting parts assemblies and units reverse the dismounting steps 3 1 Precautions for Parts Replacement 1 Be sure to dismount the AC cord and interface cable before replacing parts a Be sure
4. 15 2 5 El ctro Photographie Process o ete pue ngs CPP ocn 18 2 5 1 Explanation of Each Process 20 2 6 Detection a ei ehm care 25 2 7 esce oii ap ea ur Mie 27 2 8 COVE OPON arnis na 28 2 9 Detecting Unit existence oui Ret ee 28 3 PARTS REPLACEMENT oa deba ls 31 31 Precautions for Parts 31 922 e eta Aa 33 3 3 Replacing ERE E TED 36 3 34 dHopper Plate utin se eia ERE 36 3 3 2 LED Head and Head 2 37 3 3 9 Transfer 5 roit RR trt dax 38 3 3 4 to remove Cover Upper ASSY 39 3 3 5 Upper Cover ASSY nennt nns entres nisse 40 3 3 6 High Voltage Power Supply Board 41 3 3 7 Cover Assy and Flat Cable 42 33 80 Paper Holder it nee eet em tens 43 3 3 9 Side Plate M and Idle nennen 44 3 3 10 HeatASSy uie UE ete tense ee ren e mc Er a PEE RN 45 3 3 11 Drive Shaft E Eject and Eject 46 3 3 1
5. uun Ajddns Sol A Q z JOMOd 98 Qa 5 INN o gt 1 5 eO WHLNAN 2 lejeoH 2 ANS E GO NOSL m AQOGI H9 gO a zz 5 as me 64 K Inogd 6 os Buiueo o He NH e jo 8 02 dNMdZHl 7 ols g Ole 5 o z o o 5 1 0 e Ep 1S S re 6 5 S Jejog JejsueJ peog jddng JOMOd 95 0 Me d 5 0 S _ L 5 6546 E 5 5 12 2 isle e 4 ee 9 WeSHL S n M amp ON amp 19d 5 zo pyeog Ajddng Jamo ae 2 9 AOSEI INOOF qao S v o Ofe gsn INO ZNO sen pseog 0000 0000_ oto LNO HEAD LED HEAD 04 9 56 of 0 82 10 90 Se 4 c 44 4 0c 3I90 1 0 815 2815 6815 815 N NEISS TSAR CN Parallel Interface 830 0000000000000 00 O 6 8L n 9L St yl L i Ga Ga ON d Q333O1nv 3155 d dd d ASNE NOV d 8V1V d d ZV1V d d 9V1V d d SV1V d d YV1V d 61 04 d oV1V d d WW1Vdd 915
6. Timer Generates various control timings for monitoring paper feeding and a paper size Inputs and outputs the sensor signals and motor signals etc Also performs I O for EEPROM A D converter Inputs the feedback signals from a high voltage generation circuit and thermistor signal 2 Program ROM Program ROM contains a program for the equipment The program ROM is included in the CPU For details PCB Layout see Section 7 2 1 3 DRAM DRAM is used as resident memory 4 EEPROM EEPROM holds the following data Menu data Counter value Adjustment value 5 Parallel interface The parallel interface receives parallel data from the host it conforms to the Centronics specification IEEE 1284 B directional parallel is supported 6 USB interface USB interface receives serial data from the host 41701301TH Rev 1 12 2 2 2 3 Power Supply Unit The power supply unit supplies 5V and 26V to the main control board according to 120VAC Output voltage Application 230VAC 5 V Used to generate a logic circuit and a high voltage 26V Used to drive the motor and electromagnetic clutch The power supply unit also contains a heater drive circuit High Voltage Power Supply Board 1 High Voltage power supply circuit The high voltage power supply circuit generates the following voltages required for the electro photographic processor from 5V according to the control s
7. Setting Item Detail Specifies the applicable model s User Specifies the destination s Page PRT Selects Page Count printing Enable or Disable in menu printing LED Head Marking No Adjusts the exposure time of LED Head Head Type Specifies the correction method of the correction head at 600 DPI Strb Time Specifies the strobe time Optical Head Selects single line non correction type or double line correction type for the LED Head data line Print Position Corrects the print start position Setting Adjusts the transfer current value LED Head Width Specifies the number of physical dots in LED Head Wait Table Selects 150 C or 135 C for wait temperature Engine Speed Specifies the engine speed 41701301TH Rev 1 99 2 Supported Items Lists by Language OP8w Lite PN251 Menu No Setting Item Printer Type User Setting Range ODA INTA INTL Default ODA Page PRT x Setting Range DISABLE ENABLE Default LED Head Marking No Range 600DPI 155 to 020 No 1 to No 32 300DPI 505 545 to 066 069 1 to 32 Note 1 Default No 17 Head Type x x Setting Range TYPE1 TYPE2D2 TYPE2D4 Default Strb Time Setting Range 0 54 0 50 0 46 0 42 Default 0 50 Note 2 Optical Head Setting Range 300 1W non correction 300 2W correction 600 STEP1 600 STEP2 Default 300 1W 300 1W Print Pos
8. 80 41701301TH Rev 1 7 2 Layout 7 2 4 Main Control Board U8S PCB 89 95 95 99 CN6 Flat Cable U8S Control Board side TW VF 23 0 1 x 0 8 210 IL IN 4 14mm TW VF 6 0 1 x 0 8 85 A UL No side f NES 71mm Note When the Flat Cable is damaged order a new one For a description of a method for inserting a new Flat Cable see the insertion and bending methods of the old Flat Cable attached to the old board 41701301TH Rev 1 81 7 2 2 High Voltage Power Supply Board P3H P6L CN2 41701301TH Rev 1 82 8 PARTS LIST Figure 8 1 Cover Assy Upper 41701301TH Rev 1 Table 8 1 Cover Assy Upper Part Name Part No Remarks Cover Upper 2 40412601 Lens 2 40413201 Guide Slide L 2PP4128 1256P001 Guide Slide R 2PP4128 1257P001 Gear Spur A 4PP4128 1260P001 Plate Hopper 40412901 41701301TH Rev 1 84 Figure 8 2 Base Frame Unit 85 41701301TH Rev 1 Table 8 2 Base Frame Unit Part Name Part No Remarks Frame Unit Assy 40593201 High Voltage Power Supply Board P3H 41226501 Paper Sensor E 3PP4083 1191P001 Separator Assy 40721301 Compression Spring S 40781701 Toner Sensor Assy 3PA4083 1
9. Buffer overflow Print Over Run A print overrun occurred because print data is complicated To release the error display press the reset button on the status motor of the printer driver Simplify the print data format Print Under Run The page buffer overflowed because there are a large number of print data To release the error display press the reset button on the status motor of the printer driver Install RAM or reduce the number of print data Device configuration error Program ROM Check Error An error occurred during program ROM check Replace program ROM or the main control board When replacing the main control board also adjust EEPROM data See Section 4 2 4 Resident RAM Check Error An error occurred during resident RAM check Replace the main control board When replacing the main control board also adjust EEPROM data See Section 4 2 4 v9 Category Device configuration error Status Message EEPROM Check Error OPEL Code Table 6 1 Cont d Display Content An error occurred during EEPROM check Replace the main control board When replacing the main control board also adjust EEPROM data See Section 4 2 4 Option RAM Check Error An error occurred during option RAM check Check the connection of the Option RAM PC board If the option RAM PC board is faulty replace it Fuser Error A heater timeout er
10. Receiving circuit 5V R Pa R 1 15 1 65KQ b Sending circuit i lt Open Drain R 1 15 1 65KQ 41701301TH Rev 1 92 10 Timing charts a Data receiving timing Compatibility mode PARALLEL DATA DATA BITs 1 to 8 DATA STOROBE BUSY ACKNOWLEDGE 0 5 us min 0 5 us min 0 5 us min 0 5 us min 0 5 us max 0 5 us to 10 us I 0 min b INPUT PRIME timing when set to the effective INPUT PRIME signal INPUT PRIME BUSY ACKNOWLEDGE 5ms min 2001s max 0 min 40ms max c Data sending timing ECP Reverse mode INPUT PRIME nReverseRequest PAPER END nAckReverse PARALLEL DATA DATA BITs 1 to 8 ACKNOWLEDGE PeriphAck AUTO FEED HostAck Omin 35ms 605 typ Omin comax 50uLs typ 0 2545 typ Omin 35115 max Omin comax 15ms typ Omin 35ms max Omin comax 135 1s typ 0 5 us to 10 us 41701301TH Rev 1 93 APPENDIX C UNIVERSAL SERIAL BUS USB Universal Serial Bus Specification Revision 1 0 compliance 1 Connector Printer Side B Receptacle Upstream Input to the USB Device Cable Side Series B Plug 2 Cable e Cable Length Approx 1 8m A cable must be met USB Spec Rev 1 1 for normal operation Note Cable is not supplied 3 Table of USB I signals Contact Signal Name Typical Wiring Number
11. Yes End Caution Set the LED head drive time when replacing the LED head See Section 4 2 1 YNo Replace the main control board high voltage power supply board P3H or high voltage power supply board P6L 5 Cyclic defect EP drum 1 98 50 3 mm Clean or replace the I D unit Developing roller 1 44 36 6 mm Replace the 1 0 unit Toner supply roller 2 63 66 8 mm Replace the 1 0 unit Charge roller 0 81 20 6 mm Replace the 1 0 unit Cleaning roller 0 81 20 6 mm Replace the 1 0 unit Transfer roller 1 71 43 4 mm Replace the 1 0 unit Heat roller 2 46 62 5 mm Replace the heater Assy Pressure roller B 2 35 59 7 mm Replace pressure roller B Caution After replacing the 1 0 unit reset the drum counter Refer to Replacing the Drum Cartridge in User s Manual 41701301TH Rev 1 741 6 A blank paper is output Is the contact plate of the transfer roller in correct contact with the high voltage power supply board No Contact the contact plate of the transfer roller correctly Yes Replace the transfer roller Has this error been recovered Yes End YNo Is the terminal of the I D unit in correct contact with the contact plate See Figure 6 4 amp BO B and Figure 6 5 AMOO No Contact the terminal of the 1 0 unit correctly Y Yes Replace the I D unit Has this error been recovered Yes End Caution After replacing the I D unit
12. and Gear R 3 Move regist roller to the right and dismount it by lifting Two regist bearings also come off at the same time Take care not to lose them 41701301TH Rev 1 52 3 3 17 Paper Sensor E Paper Sensor Exit and Toner Sensor Assy 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount the high voltage power supply board P3H See Section 3 3 6 3 Dismount the base frame See Section 3 3 13 4 Dismount the paper holder assy See Section 3 3 8 5 Dismount the sheet guide See Section 3 3 13 6 Dismount the heat assy See Section 3 3 10 7 Dismount drive shaft E See Section 3 3 11 8 Dismount paper sensor Eq 9 Dismount paper sensor exit 2 10 Dismount toner sensor assy 3 41701301TH Rev 1 53 3 3 18 Base Plate 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount the base frame See Section 3 3 13 3 Remove two screws 1 disconnect connector 2 and dismount power supply unit 3 4 Dismount insulation sheet 2 5 Remove five screws 5 and dismount main control board 6 6 Dismount insulation sheet 7 7 Remove screw 8 disconnect connector 9 and dismount High Voltage Power Supply Board P6L 40 from base plate 7 8 Dismount insulation sheet 42 41701301TH Rev 1 4 ADJUSTMENT This chapter explains adjustment necessary when a part is replaced This adjustme
13. 200 screwdriver Digital multimeter tester Pliers Maintenance Utility Handy cleaner Table 3 2 Maintenance Utility Maintenance utility 41701301TH Rev 1 32 3 2 Parts Layout This section explains the layout of main parts Upper Cover Assy Spur gear A di Guide side R d Guide side L Hopper plate Figure 3 1 41701301TH Rev 1 33 Base Frame Unit LED head Flat cable assy Head spring Top cover assy Paper guide R Pressure roller B Oe Back up roller 7 Heat assy 22 Registration roller 4 Transfer P di Side plate M Paper guide L lt P ws Z Paper roller Idle gear heat 22 Drive shaft E eject P elect pr Tension plate er hy lt NRK SK Y oe ON S lt lt Stopper spring FERC KAW M Rp d D d Toner cartrid 2 unit type 6 5 Pulse motor 2 Main S unit Type 6 Sheet guide Power sensor E ge High voltage power supply board P3H Figure 3 2 41701301TH Rev 1 34 Base Plate Unit I High Voltage Power Supply board P6L SP I gt lt Bw Base plate assy Figure 3 3 41701301TH Rev 1 35 3 3 Replacing Parts This section explains how to replace parts and assemblies 3 3 1 Hopper
14. 41701301TH Rev 1 55 4 2 Adjustment When Replacing a Part The table below lists the parts that requires adjustment when they are replaced Part to be Replaced Adjustment Set the LED head drive time Set the Optical Head LED head Set the Strb Time EP unit Reset the drum counter Refer to User s Manual Main control board Upload or download EEPROM data 4 2 1 Setting LED Head Drive Time Caution Whentheliminous intensity of anew LED head is the same as that of the old LED head do not set the LED head drive time Use LED Head Making No in the engine menu tab of the maintenance driver to set the luminous intensity displayed on the LED head as the LED head drive time See Figure 4 2 Luminous intensity of LED head Luminous intensity display 100 313 1228G1 This three digits indicate the luminous intensity of the LED head Figure 4 2 41701301TH Rev 1 56 4 2 2 Uploading and Downloading EEPROM Data When the main control board is replaced EEPROM data must be reflected on a new main control board Use EEPROM Operations in the Main Set tab of the maintenance utility to reflect EEPROM data on the new main control board See APPENDIX D Reflect EEPROM data on the new main control board in the following procedures 1 Checkthatthe printerand PC are connected by the parallel I F then execute the maintenance utility 2 Click the Option butt
15. 6 4 Move paper guide L and paper guide 5 on the rear of the printer to the center 5 Remove two front claws of upper cover assy 6 and lift upper cover assy 6 6 Dismount spur gear 7 guide slide L 8 and guide slide 9 7 Dismount lens 9 41701301TH Rev 1 40 3 3 6 High Voltage Power Supply Board P3H 1 Dismount upper cover assy See Section 3 3 5 2 Remove three screws 1 and remove the cover 2 and draw out high voltage power supply board P3H 3 3 Disconnect all the cables from high voltage power supply board P3H 3 and dismount high voltage power supply board P3H 3 Caution Note the following when assembling the high voltage power supply board P3H Mount the high voltage power supply board P3H with top cover assy removed or open Take care that cable 4 will not interfere with the paper sensor exit when it is connected Replacement parts of High Voltage Power Supply Board P6L is see 3 3 18 41701301TH Rev 1 41 3 3 7 Cover Assy and Flat Cable Assy 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount the LED head See Section 3 3 2 3 Press the right clamp outward and dismount the engagement and top cover assy 1 Tension spring also comes off at the same time 4 Disconnect connector HEAD on the control board and dismount flat cable assy 3 Note When reassembling these parts make sure that
16. 65 D The OKIPAGE 8w Lite 8z malfunctions after the power supply has been turned on Turn the power supply off then on again Is the LED lamp on Is the AC cable connected correctly No Connect the AC cable correctly Yves Is 5 supplied between CN1 Pin7 and CN1 Pin13 of the high voltage power supply board P3H Pin7 5V Pin13 OV Arethe CN1 connectors of the high voltage power supply board P3H and main control board connected correctly No Connect the CN1 connectors correctly Yves Is 5V supplied between CN7 Pin2 and CN7 Pin3 of the main control board Pin2 45V Pin3 OV No Replace the high voltage power supply board P3H Y Yes Replace the main control board Yves Is 1 2V voltage supplied between CN1 Pin2 and CN1 Pin13 of the high voltage power supply board P3H No Replace the main control board Y ves Replace the high voltage power supply board P3H Y Yes Replace the main control board 41701301TH Rev 1 66 JAM error 2 1 Paper input jam Does a paper input jam occur when the power supply is turned on t Yes Is the jammed paper on paper sensor Yes Remove the jammed paper Y No Is paper sensor manual feed paper operating normally Replace paper sensor manual feed or paper Y ves Replace the high voltage power supply board P3H Y No Does a paper input jam occur during paper loading t Yes Is the paper already fed to paper senso
17. Assignment Vbus Red D White D Green GND Black Shield Drain Wire 4 Connector pin arrangement 5 Mode amp Class of Device Full speed Driver Self powered Device 6 Data Signaling Rate Full speed function 12Mb s 0 25 2500ppm 7 Receive Buffer 2044K Bytes 8 Interface circuit 33V Full speed Buffer TxD TxD 41701301TH Rev 1 94 9 Signal Level Input Output Level Parameter Input Levels High driven High floating Low Output Levels Low High driven Output Signal Crossover Voltage 41701301TH Rev 1 95 APPENDIX D MAINTENANCE UTILITY MANUAL Overview 1 1 1 2 This manual describes the details of GUI for the maintenance utility corresponding to OKIPAGE 8w Lite 8z However as disable section is not used in this printer its explanation will be omitted Main Set Property Sheet The following figure shows an example of the Main Set Property Sheet display F OKIPAGE Setting items have the following meanings respectively LED Head Marking No An item to control the exposure time of LED Head Has commonalities with Engine Menu Property Sheet Takes effect at the time when any setting item is selected H W Check 1 Printer RAM Check OP8p Plus does not support this Sends the RAM Check command to check free memory area
18. Exposure Power Power supply Charging supply Paper eject i dli i Paper feeding Cleaning Cleaning Development Developing Toner d roller roller cartridge P Fusing lt Transfer Paper supply holder Paper sensor m Manual feed section Power Heat roller R Transfer roller Feed roller ic roller supply roller Manual feed sensor Paper ejection Fusing Cleaning Transfer Developrrent Paper feed Paper hopping ni t c4 2 5 1 Explanation of Each Process Operation 1 Hopping As shown in the figure below the clutch for hopping is turned on off according to current ON OFF to a coil When the clutch is OFF Spring for resetting Clutch plate Hopping gear NN 20 Coil a AN vf Magnetic substance plate WO NYA TB A Zed Pin N Hopping shaft Hopping roller pping Engagement section When the clutch is ON Hopping gear Clutch plate When the clutch is on the hopping gear engages with the clutch plate to rotate the hopping roller When the clutch is off the hopping gear is separated from the clutch plate by the spring for resetting disabling the rotation of the hopping roller 41701301TH Rev 1 20 2 Printing and warm up At warm up Triple gear Transfer gear Idle gear Planetary gear p Hopping gear D Pulse motor main Rotate the pulse motor
19. Has the paper arrived at paper sensor paper t No Is the feed roller rotating No Check the gear block Y t Yes Is the I D unit set correctly Set the I D unit correctly Y ves Check the gear block Y Yes Has the paper arrived at the paper sensor outlet Yes Is the paper sensor outlet operating normally No Replace the paper sensor outlet Yes Replace the high voltage power supply board P3H YNo Check the gear block 2 3 Paper exit jam Does a paper exit jam occur when the power supply is turned on Yes Is the jammed paper on the paper sensor outlet Yes Remove the jammed paper Y No Is the paper sensor outlet operating normally No Replace the paper sensor outlet Y ves Replace the high voltage power supply board P3H YNo Check the gear block or replace the eject roller 41701301TH Rev 1 68 3 Paper size error Is the paper of the specified size being use No Use paper of the specified size Y Yes Is paper sensor paper operating normally No Replace paper sensor paper or clean the inlet sensor on the high voltage power supply board P3H Y ves Is the paper sensor outlet operating normally No Replace the paper sensor outlet or clean the outlet sensor on the high voltage power supply board P3H Y ves Replace the high voltage power supply board P3H Exit roller Paper sensor outlet Heat roller Transfer roller
20. OFF No paper exists Paper sensor Detects the leading part of the paper Monitors paper feeding ON Paper exists OFF No paper exists Outlet sensor Monitors paper feeding and the paper size according to the paper sensor arrival and passing time ON Paper exists OFF No paper exists Toner sensor Detects the low toner status ON long Toner low OFF short Toner High 41701301TH Rev 1 14 2 4 X Electro Photographic Processor The electro photographic processor prints out the image data to be sent from the main control board on sheets of paper Figure 2 3 shows the layout drawing of the electro photographic processor 1 Image drum unit The image drum unit makes a toner adhere to the formed electrostatic latent image with static electricity This electrostatic latent image is formed by the lights irradiated from LED heads 2 Electromagnetic clutch The electromagnetic clutch controls the rotation of the hopping roller according to signals from the control block Exit roller Heat roller 8 19 910 h Cleaning roller 8 9 000 LED head Drum roller 2 16 000 Developing roller 2 14 000 23 18 Single tray Transfer roller Paper sensor 2 15 000 Feed roller Hopping roller Tray printing Figure 2 3 Layout Drawing of Electro Photographic Processor 41701301TH Rev 1 15 3 Pulse motor Main This pulse mot
21. Plate 1 Remove two claws and dismount hopper plate 1 D 41701301TH Rev 1 36 3 3 2 LED Head and Head Spring 1 Open top cover assy 1 2 Dismount the left clamp and LED head 2 Then dismount flat cable assy 3 3 Dismount two head springs 2 41701301TH Rev 1 37 3 3 3 Transfer Roller 1 Open top cover assy 1 and dismount I D unit Type 6 2 Remove the washer TR 6 make sure to do it 1 Inserta flat tip driver between the claw and the guide gear T in a way of pushing gear T so that it hits the left side and rotate the driver 2 Pull off the post of the gear T the hole of the claw by lifting the shaft of transfer roller 3 with another driver while maintaining the avobe state in 1 Flat tip driver Guide gear T du 2 41701301TH Rev 1 38 3 3 4 to remove Cover Upper Assy 1 Unscrew screws on the rear part 2 Open Cover Top Assy Inserting a screwdriver head into a slot marked with on the Plate Base edge turn the screwdriver and lift Cover Upper Assy upward Repeat the same procedure for another slot on the edge Positions to insert screwdriver 41701301TH Rev 1 39 3 3 5 Upper Cover Assy 1 Turn off the power switch and unplug the AC cord from the AC socket 2 Disconnect interface cable 1 3 Open top cover assy 2 and dismount I D unit Type
22. lamp that heats the heat roller The thermistor on the surface of the heat roller keeps the temperature of the heat roller constant A thermostat is also installed for safety If temperature rises abnormally this thermostat opens to suspend voltage supply to the heater The back up roller is pressurized to the heat roller by the pressure spring on each side Thermistor Separation claw Heater roller Heater D Back up roller Pressure Spring 8 Cleaning After transfer has terminated the cleaning roller temporarily draws in the untransferred residual toner adhering to the OPC drum with static electricity and then returns itto the OPC OPC drum Cleaning roller High voltage power supply Transfer roller 41701301TH Rev 1 24 2 6 Paper Jam Detection The OKIPAGE 8w Lite 8z monitors the paper status when the power supply is on and during printing In the following cases the OKIPAGE 8w Lite 8z interrupts the printing process as a paper jam Printing can be recovered by opening the cover removing the jammed paper and closing the cover Cause of Error Paper inlet jam Only the manual feed sensor detects Paper exists when the power supply is on The leading part of the paper does not reach the paper sensor although hopping operation was performed three time Paper feed jam The leading part of the paper does not reach the outlet sensor within a fixed time after it ha
23. main in the a direction The planetary gear rotates in the a direction dislocating its position in the a direction This causes the planetary gear to be separated from gear A The hopping gear will not rotate The triple gear and transfer gear rotate via the idle gear to drive the EP unit At printing Triple gear Transfer gear Idle gear Planetary gear Hopping gear Pulse motor main The paper is further advanced in synchronization to the print data 41701301TH Rev 1 21 3 Charging Charging is performed by applying DC voltage to the charge roller that is in contact with the surface of the OPC drum High pe Charge roller Supply OPC drum 4 Exposure Light emitted from the LED head irradiates the negatively charged surface of the OPC drum The surface potential of the irradiated surface attenuates to form the electrostatic latent image corresponding to the image signal LED head High Charge roller LED head voltage power Suppl Q9 Paper Image drum OPC drum 41701301TH Rev 1 22 5 Development The electrostatic latent image on the surface of the OPC drum is changed to a visible toner image by applying a toner to it Development is performed in the contact part between the OPC drum and developing roller D The sponge roller negatively charges a toner and applies it to the developing roller Developing blade Charge roller S ponge roller Developing
24. roller OPC drum The toner applied to the developing roller is thin coated by the developing blade 3 Atoner adheres to the exposure part of the OPC drum in the contact part between the OPC drum and developing roller This causes the electrostatic latent image to be changed to a visible image 6 Transfer The transfer roller is composed of conductive sponge material This roller is set so that the surface of the OPC drum and sheets of paper will adhere closely A sheet of paper is placed on the surface of the OPC drum and the positive charge opposite to the negative charge of a toner is applied from the reverse side by the transfer roller When a high negative voltage is applied from the power supply to the transfer roller the positive charge induced on the surface of the transfer roller moves to the paper side at the contact part between the transfer roller and the sheet of paper The positive charge on the lower side of the sheet of paper then causes the negatively charged toner adhering to the surface of the OPC drum to move to the upper side of the sheet This enables transfer to the sheet of paper OPC drum Transfer roller High voltage power supply 41701301TH Rev 1 23 7 Fusing The transferred unfused toner image is fused to a sheet of paper because heat and pressure are applied when it passes between the heat roller and back up roller The Teflon coated heat roller contains a 400 W heater Halogen
25. used for a raster buffer and receiving buffer including option RAM Waits for a response after the command is issued and displays the result in a dialog box 41701301TH Rev 1 96 13 EEPROM Operation 1 EEPROM Upload Loads and Stores a currently connected printer s Engine Menu in memory Enables the EEPROM Download button after the completion of the storage The loaded Menu data is retained when the printer is changed Engine Menu is not executed when a different printer is connected after one time connection error Consequently porting Menu data to another printer is enabled 2 EEPROM Download Sends a command to a printer to program an EEPROM with Engine Menu which is stored in memory when the EEPROM Upload button is selected Disables the button after the command is sent 1 4 Counter Reset The engine counter group displays and initializes the following counter values Data to be initialized shall be established in a registry when the maintenance utility is installed 1 Drum Count Displays the number of EP drum revolutions 2 Total Drum Count Displays the total number of EP drum revolutions after shipment 3 Page Count Displays the total number of pages printed after shipment 4 Reset Button Brings up a message box at the click of the button and before each registry preset value Drum Total Drum Page Count values is established in a printer allows the user to confirm the execution of count
26. 193G001 Pulse Motor 40496401 nl gt AJJ Ep Unit Type 6 Consumable Toner Cartridge Unit Type 6 Consumable Hopping Roller 40779601 Roller Holder Hopping Roller 3PP4083 1128P001 Magnet H Hopping Shaft 3PB4083 1127P001 Hopping Shaft Assy 3PA4083 1133G001 Knock Pin NK2 10 SUS Idle Gear R 4PP4083 1143P001 Idle Gear 2R 3PP4083 1184P001 Gear R 4083 1142 001 Idle Gear 3PP4083 1181P001 Earth Plate A 3PP4083 1189P001 Side Plate M 3PP4083 1188P001 Idle Gear P 3PP4083 1182P001 Idle Gear 3R 40721001 Tension Plate 4PP4083 1165P001 Idle Gear Heat 3PP4083 1185P001 Idle Gear E A 4PP4083 1186P001 Idle Gear E B 4083 1187 001 Drive Shaft Eject 3PP4083 1170P001 Eject Roller 40074601 Regist Bearing 3PP4083 1141P001 Regist Roller 3PB4083 1140P001 Tension Spring 40654001 Gear T 40737801 Transfer Roller 40713601 Bias Spring L Back Up Roller 4PP4083 1136P001 Bearing BU Back Up Roller 3PP4083 1161P001 Pressure Roller B Back Up Roller 40594601 Paper Guide R 40249501 Paper Guide L 40249401 41701301TH Rev 1 86 Part Name Part No Remarks Paper Holder 1PP4083 1231P001 Paper Sensor Exit 3PP4083 1192P001 Hopper Spring 4PP4083 1247P001 Top Cover Assy 40592116 OP8z Top Cover Assy 40592127 OP8w Lite Head Spring 4PP4083 6168P001 LED Head 40521101 Fla
27. 2 Pressure Roller B Back Up 47 3 313 Separator Guide 11444024004 00 enne nennen nennen 48 3 3 14 Pulse Motor ere tiir terrre rt pt ete su teet es 50 3 3 15 Hopping Shaft 002000 00 00 51 35316 Roller iuo eats An iet a e he Mae 52 3 3 17 Paper Sensor E Paper Sensor Exit and Toner Sensor 53 3 3 18 Plate eure e ee ecce a Rr bebes 54 4 55 4 1 Adjustment Types and Functions 55 43 1 Printer Driver ucc te cce eee coe eee ee ee e ded 55 4 1 2 Engine Maintenance 55 4 2 Adjustment When Replacing a 56 4 2 1 Setting LED Head Drive Time sssssssssssseseeeeenenn nennen 56 4 2 2 Uploading and Downloading EEPROM Data 57 41701301TH Rev 1 4 5 PERIODICAL 58 5 1 Periodical Replacement Parts 58 5 2 est heehee CP 58 5 2 1 Cleaning the LED Lens Array 2 4 58 6 TROUBLESHOOTING 60 6 1 Troublestio
28. OKI OKIPAGE 8w Lite OEL OKIPAGE 8z ODA INT LED Page Printer Maintenance Manual OEL ODA INT 2000 09 18 Document Revision History Corrected items Page Description of change ISSUE Person in charge CNT K Yamamoto 41701301TH Rev 1 2 PREFACE This Maintenance Manual describes the field maintenance methods for LED Page Printers This manual is written for use by service persons Please note that you should refer to the Printer Handbook for the handling and operating methods of the equipment 41701301TH Rev 1 3 CONTENTS T CONFIGURA TON rae amermar aaaea aeaa 6 1 1 System Configuration diete 6 1 2 Printer Configuration as 7 1 3 4 Specification sated Senki hed tee APORTE 8 1 4 Safety Standards a sai ES 10 141 Certification Label eene nnnm tens nnne 10 1 42 Warning Label recen acce tasty E c 10 2 OPERATION DESCRIPTION srini 22 rana rna rinas ena nanc ac Uc ka Y 11 2 1 Malin Control BOSI ass oec eroe 12 22 Power Supply erre eee lt pi D p d dei cen ue 13 2 3 High Voltage Power Supply 13 2 4 Electro Photographic
29. Olllig TIS zt eU a E ai ups 60 6 2 Check Points Before Correcting Image Problems 60 6 3 Notes When Correcting Image Problems 60 6 4 Preparation Before Troubleshooting 60 5 5 Troubleshooting ood EE HD Hei tasti FR biis ates 61 6 5 1 Status Monitor Message 1 5 61 6 5 2 Status Message Troubleshooting sesssseeeenn 65 6 5 3 Image Troubleshooting eene 71 7T WIRING DIAGRAM canini nds a ark nani cua Eg aS 80 7 1 Interconnect Signal ied re heec nl e nd bec ines 80 Pia ue 81 7 2 1 Main Control Board 085 81 7 2 2 High Voltage Power Supply Board 82 PARES LIST corni recon sex Deb biete Y FG edd Ri I SF ERR dU CF 83 APPENDIX A LOCAL PRINTING DEMO PAGE PRINTING 90 APPENDIX B PARALLEL INTERFACE 91 APPENDIX C UNIVERSAL SERIAL BUS USB 94 APPENDIX D MAINTENANCE UTILITY 96 41701301TH Rev 1 5 1 CONFIGURATION 11 System Configuration The OKIPAGE 8w Lite 8z consists of a control block a power supply unit and
30. SCP Japanese Alll letter size Print Japanese Office Pattern Print 2 Test File Print Opens a dialog box Windows API for file selection and waits for a printing file to be entered by an operator The selected file is sent as is A language specific extension is supplied with each file PRN for PJL Language HBP for OPEL Language Here is an example of the file selecting dialog box display 41701301TH Rev 1 102 4 Product Set Property Sheet Device ID and USB ID are displayed on Product Set Property Sheet Hr 41701301TH Rev 1 103 5 About Property Sheet About Property Sheet shows maintenance utility and printer firmware information 1 About Display Description Oki Page Printer Engine Maintenance Version Number of This Application 2 Printer Information Display Description i Version Number of Connected Printer F W Version Number of Connected Printer engine F W Information on CPU Equipped with Connected Printer Free Memory Size of Connected Printer 41701301TH Rev 1 104 104
31. Y No Is the heat roller of the heat assy dirty Yes Clean the heat roller YNo Is the terminal of the 1 0 unit in correct contact with the contact plate See Figure 6 4 D and Figure 6 5 D No Contact the terminal correctly Y ves Replace the I D unit Has this error been recovered Yes End Caution After replacing the I D unit reset the drum counter Refer to Replacing the Drum Cartridge in User s Manual YNo Replace the main control board high voltage power supply board P3H or high voltage power supply board P6L 3 A blank paper is output Is the LED head connected correctly Check the HEAD connector of the main control board No Connect the LED head correctly Y Yes Is the terminal of the 1 0 unit in correct contact with the contact plate See Figure 6 5 No Contact the terminal correctly Y ves Replace the LED head Has this error been recovered Yes End Caution Set the LED head drive time when replacing the LED head See Section 4 2 1 YNo Replace the main control board high voltage power supply board P3H or high voltage power supply board P6L 41701301TH Rev 1 7 D Vertical black belt stripe Replace the 1 0 unit Has this error been recovered Yes End Caution After replacing the I D unit reset the drum counter Refer to Replacing the Drum Cartridge in User s Manual Y No Replace the LED head Has this error been recovered
32. ainbi4 uo paun si ygn 2neuboae uanp ep eun pau uoped si Uanawoy Aen uoge edo BuiddoH rojo Buiddoy BIIO PUPE PPY uero Gurdogep PA Be espd jo uongiar esee PJ PE P PNA A PABU PHUN Ueu qau Jo uoge ALUON 1 Ueu qau Aq jonuoo PIY 1 1 T 1 1 1 1 1 JJI JESH Bue S 1 I H Budo Duico grec qau Jo uoga ruou LAUD IOI D esid jo uoga AQ o POY jenuew 17 41701301 1 2 5 Electro Photographic Process 1 Electro photographic process The electro photographic process is outlined below D Charging The surface of the OPC drum is charged negatively and uniformly by applying the DC voltage to the CH roller Exposure Light emitted from the LED head irradiates the negatively charged surface of the OPC drum The surface potential of the irradiated surface attenuates to form the electrostatic latent image corresponding to the image signal Development and residual toner recovery The negatively charged toner is brought int
33. an engine block See Figure 1 1 ENGINE UNIT fe 22 Paper Feed Mechanism Hopper Plate gt Electro photographic Processor A Main High Voltage Power Supply Board Sub High Voltage PowerSupply Board Main Control Board Power Supply Unit Figure 1 1 41701301TH Rev 1 1 2 Printer Configuration The printer unit consists of the following five hardware components Electro Photographic Processor Paper Feeder Main Control Board High Voltage Power Supply Board two Boards Power Supply Unit Figure 1 2 is the configuration of the printer unit 63 SS P High voltage Power Supply Board P6L High voltage Power Supply Board P3H Figure 1 2 41701301TH Rev 1 7 1 3 Specification 1 Type 2 Outside dimensions excludes protruding portion 3 Weight 4 Development method Exposure method 5 Paper 6 Printing speed 7 Paper feeding method 8 Paper delivery method 9 Resolution 10 Power input 11 Power consumption Desktop Height 6 72 170 mm Width 12 74 324 mm Depth 7 90 207 mm 4 2 kg with Image Drum Cartridge and Toner Cartridge Dry non magnetic development system LED stationary head Type Standard paper Xerox 4200 20 Ibs Application paper manual face up feed La
34. bel Envelope 24 to 2810 OHP paper Transparency Size 14 355 6 mm x 8 5 215 9 mm Max 5 127mm x 3 76 2 Min Thickness Automatic feed 16 to 28 Ibs 60 to 105 g m Manual feed Label Envelope OHP paper transpar 16 to 32 Ibs 60 to 120g m First print 13 seconds A4 after warm up Continuous print 8 1 sheets minute Letter 7 7 sheets minute A4 Without cleaning period of time at each 8th pages Warm up time 35 seconds at room temperature 77 F 25 C Automatic paper feed or manual paper feed Face up 300 x 300 300 x 1 200 dpi 120 45596 15 for ODA 230 VAC 10 for OEL ODA INT Peak Approx 430W Typical operation Approx 150W Idle Approx 45W Power save mode Approx 4 5W 41701301TH Rev 1 8 12 Temperature and humidity During operation 10 to 32 C 20 to 80 RH relative humidity In storage 10 to 43 C 10 to 90 RH relative humidity No condensation is permissible Caution Temperature and humidity in storage are measured with the OKIPAGE 8w Lite 8z being packed they are valid for one year 13 Noise During operation Avg 50 dB A slow without peak sounds conformity with ANSI Standby Background level 14 Consumables Toner cartridge kit 1 500 5 duty 45g cartridge kit Image drum cartridge 10 000 at continuous printing 41701301TH Rev 1 9 1 4 Safety Standards 1 4 1 Ce
35. ection 3 3 7 3 Dismount the heat assy See Section 3 3 10 4 Dismount idle gear E A 1 and idle gear E B 2 b Unlock and dismount drive shaft E Eject 3 5 Dismount two eject rollers 4 41701301TH Rev 1 46 3 3 12 Pressure Roller B Back Up Roller Dismount the upper cover assy See Section 3 3 5 Dismount the high voltage power supply board P3H See Section 3 3 6 T Dismount the heat assy See Section 3 3 10 Dismount the engagement with the left ground then pressure roller Two bearing BUs 2 and two bias springs 3 also come off at the same time 41701301TH Rev 1 47 3 3 13 Separator Guide 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount the high voltage power supply board P3H See Section 3 3 6 3 Remove four screws 1 4 Dismount inlet from base frame 3 Dismounting inlet gt Insert a screwdriver into the hole on the side of base frame 3 remove the inlet claw from base frame 8 and dismount inlet 2 5 Disconnect three cables and connector and dismount base frame 3 Then remove screw 0 Disconnecting connector 1 12 Dismount connector 17 by drawing it upward while pushing the clamp lever with a standard screwdriver 6 Dismount the paper holder assy See Section 3 3 8 7 Dismount two engagements and sheet guide 5 8 Dismount separator assy compression spr
36. ed correctly Check the HEAD connector of the main control board No Install the LED head correctly Y ves Replace the LED head Has this error been recovered Yes End Caution Set the LED head drive time when replacing the LED head See Section 4 2 1 Y Yes Replace the I D unit Has this error been recovered Yes End Caution After replacing the I D unit reset the drum counter Refer to Replacing the Drum Cartridge in User s Manual YNo Replace the main control board high voltage power supply board P3H or high voltage power supply board P6L 41701301TH Rev 1 77 5 sa D 5 ect Toner Supply Roller Developing Roller Charge Roller Cleaning Roller Transfer Roller Heat Roller ADOOGS Figure 6 4 41701301TH Rev 1 78 Contents Toner Supply Roller Developing Roller 306 Charge Roller Cleaning Roller Ground Drum Figure 6 5 41701301TH Rev 1 79 WIRING DIAGRAM 7 Interconnect Signal Diagram 7 1 Jejog Buidojanaq A001 Ajddng 240 902 FG FG OVP P JON aj DMPH2 N DMPH2 P DMPHT N 4 3 2 enig Ox Q C 5 Od Qc o 35 N NOIV3H E
37. equence from the main control board When the cover is open 5V supply is automatically interrupted to stop high voltage output Output Voltage Application Remarks 1 3 KV Voltage to be applied to a charge roller P3H PCB 265 V 265 V Voltage to be applied to a developing roller P3H PCB 550 V 0 V Voltage to be applied to a sponge roller P3H PCB 400 V 1 35 KV Voltage to be applied to a cleaning roller P6L PCB 500 V 3 5 KV 750 V Voltage to be applied to a transfer roller P3H PCB Caution The TR voltage varies with medium and transfer roller impedance 41701301TH Rev 1 13 2 Sensors The high voltage power supply board consists of the high voltage power supply circuit that supplies power to the electro photographic processor system and the photosensor that detects a paper feeding system and toners Figure 2 2 shows the sensor layout drawing Sensor Manual feed sensor Exit roller Outlet sensor Heat roller Transfer roller Feed roller Paper feeding direction gt Paper sensor 1 oner T 1 sensor Hopping assy i roller Manual feed sensor st CS Figure 2 2 Function Monitors whether paper was inserted into the manual feed sensor section Sensing State ON Paper exists
38. er reset The default value is 0 31 0 Note Page Count disables the Reset button when the fixed number of pages is exceeded After that the resetting cannot be performed The number of pages which is to be established in a registry is initially 500 5 Reset All Opens a message box with the click of the button and before all set values in the initialization file Drum Total Drum Page Count values are established in a printer allows the user to confirm the execution of counter reset If a counter read command is sent immediately after a counter reset command is sent a response to that command may not be reset and each counter s message box to appear to inform a user of EEPROM write error If a connected printer does not support the reading of any counter value a relevant item can be dimmed grayed out as non selectable causing the Reset button to be disabled To determine where the reading is available or not commands for reading all the counter values are sent An item on which there is a response is defined as a support item 41701301TH Rev 1 97 2 Menu Property Sheet The following figure provides an example of the Menu Property Sheet display 7 OKIPAGE Bz xi ET 0 Main Set Mena Local Product Set About OKIPAGE 82 MAA 1 Set Item Display Tree View Displays setting item names anda list of currently set values An item with N A in its set value indicates that it
39. ertical stripes Cyclical defect Figure 6 3 Image Problems Blank paper White vertical belts or streaks 41701301TH Rev 1 71 D An image is light or blurred entirely Is the toner low Is Toner Low being displayed Yes Supply a toner Y No Is the specified paper being used No Use the specified paper Y ves Is the lens of the LED head dirty Yes Clean the LED head Y No Is the LED head installed correctly Check the HEAD connector of the main control board No Install the LED head correctly Y ves Is the contact plate of the transfer roller in correct contact with the high voltage power supply board P3H See Figure 6 4 E Yes Is the terminal of the I D unit in correct contact with the contact plate See Figure 6 4 and B No Contact the terminal correctly Yes Replace the transfer roller Has this error been recovered Yes End No Replace the I D unit Has this error been recovered Yes End Caution After replacing the I D unit reset the drum counter Refer to Replacing the Drum Cartridge in User s Y No Replace the main control board high voltage power supply board P6L or high voltage power supply board P3H 41701301TH Rev 1 72 Dark background density Has the OPC drum being exposed to external light Yes Set the OPC drum in the OKIPAGE 8w Lite 8z and wait for about 30 minutes
40. ing 50 9 Dismount paper sensor E 9 41701301TH Rev 1 48 lt Dismount Inlet gt Screw driver N lamp lever Disconnecting Connector gt uy CN2 41701301TH Rev 1 49 3 314 Pulse Motor Main 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount the high voltage power supply board P3H See Section 3 3 6 3 Dismount side plate M See Section 3 3 9 4 Dismount the base frame See Section 3 3 13 5 Remove two screws 1 and dismount pulse motor main 2 41701301TH Rev 1 50 3 3 15 Hopping Shaft Assy 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount the high voltage power supply board P3H See Section 3 3 6 3 Dismount the base frame See Section 3 3 13 4 Dismount the paper holder assy See Section 3 3 8 5 Dismount the sheet guide See Section 3 3 13 6 Dismount side plate M See Section 3 3 9 7 Raise up roller holder slide hopping shaft assy D and dismount roller holder 3 and hopping roller Knock also comes off at the same time Take care not to lose it 8 Draw out hopping shaft assy D to the right and dismount magnet N Y 41701301 Rev 1 51 3 3 16 Regist Roller 1 Dismount the hopping shaft assy See Section 3 3 15 2 Dismount Idle gear R
41. is not supported On that item there has been no response when a Set value read command is sent See the setting items list for setting items Clicking on a setting item opens a set value selecting dialog T Configuration Dialog for Selecting Set Value Displays this dialog on an item by item basis the LED Head Marking No combo boxes in the example of the display Clicking on a set value makes the selection The selected value takes effect only when another set value is selected in the Set Item Display Tree View However the set value is not established in a device 3 Reset Engine Button Sends an engine reset command to a device After that all set values are loaded again 4 Cancel Button Disables all changes which have been made after the Property Sheet appears However accessing the device side by use of the button is controlling 5b Entry Button Records a currently displayed set value in a device GUI set values in the engine menu group affect a printer Selecting the Entry button sends all menu item set commands irrespective of whether change is made to the all menu item GUI display user definable information to be read 6 Upload Button Reads a currently set value established in a device to display the value again 41701301TH Rev 1 98 2 1 Setting Items 1 Setting Items The following menu items are displayed on Menu from which settings are changed Menu Item Words displayed Printer Type
42. ition Setting Range 4 00mm to 3 5mm Default 0 00mm Setting Setting Range 2 to 2 Default 0 LED Head Width x Setting Range Full 2560 dots Narrow 2496 do Default Full Note 3 Wait Table x Setting Range Normal Low Level Default English Speed x Setting Range 6ppm 8ppm Default 41701301TH Rev 1 100 Note 1 The meanings of set values in the LED Head Marking No differ according to which Optical Head is selected The following table shows set values and their meanings LED Head Marking No Setting Table Optical Head 600DPI Optical Head 300DPI Standard Standard 505 545 466 504 431 465 398 430 368 397 346 367 314 339 291 313 269 290 248 268 229 247 212 228 196 211 181 195 168 180 155 167 143 154 132 142 122 131 113 121 105 112 097 104 089 096 083 088 077 082 070 076 066 069 2 Unassigned in 300 DPI head 3 Changeable Set values unassigned 4 Unchangeable 41701301TH Rev 1 101 3 Local Print Property Sheet 1 Local Print Sends a local print command at the click of the button Applicable models are as follows Applicable Model Demonstration Printer Available Font Print Charge Roller Cleaning Print ESCP Menu Status Print Printer Available ESCP Font Print E
43. nt is made by changing the parameters values set in EEPROM on the main control board The printer driver or maintenance utility can be used to change these values Only servicemen and maintenance personnel can use the maintenance utility This utility cannot be made public for printer end users 4 1 Adjustment Types and Functions 4 1 1 Printer Driver This printer driver has the following functions Drum counter reset Charge roller cleaning For Windows For Macintosh adi Bii DRAG ir E VAM Printer 1 Fnrzer semar a Farma F gt Primer zj amm m Perr Save Daisy brune disais Pailin ober ip 1 Chess F ge eret tem We review mm Durum eE aima Lira Finit Hen Limes atr iss qu Bb t Figure 4 1 1 Drum counter reset This function resets the life of the drum counter when the EP unit is replaced Clicking the Reset button resets the life 2 Charge roller cleaning This function cleans the charge roller of the EP unit it is used when printing is unclear For details on how to operate this function refer to User s Manual 4 1 2 Engine Maintenance Utility See APPENDIX D
44. o contact with the OPC drum adhering to the electrostatic latent image on the OPC drum by static electricity This adhesion causes the electrostatic latent image to change to a visible image Atthe same time the residual toner on the OPC drum is attracted to the developing roller by static electricity Transfer When paperis placed overthe image drum surface the positive charge which is opposite in polarity to that of the toner is applied to the reverse side by the transfer roller The toner is attracted by the positive charge and is transferred onto the paper This results in the transfer of the toner image formed on the image drum onto the paper 5 Cleaning The cleaning roller temporarily attracts the residual toner on the transferred OPC drum with static electricity then returns the toner to the OPC drum 6 Fusing The transferred unfused toner image is fused to a sheet of paper by applying heat and pressure to the image Figure 2 5 is a flow for the electro photographic process 41701301TH Rev 1 18 6L Figure 2 5 Flow for Electro Photographic Process Control signal LED head Power supply Paper delivery N Charge roller Y
45. on 4 Do not expose the image drum to light for more than five minutes at room temperature 6 4 Preparation Before Troubleshooting 1 Message display The failure status of the OKIPAGE 8w Lite 8z is displayed on the status monitor of the PC Take proper action according to the message displayed on the status monitor 2 LED display The OKIPAGE 8w Lite 8z is equipped with only one LED This LED indicates one of the following statuss LED Functions Printer Status LED Indication Ready Lighting Printing in progress Blink 1 The LED blinks at a cycle of 1 second 0 5s ON Recoverable alarm Blink 2 from data reception to printing end A The LED blinks at a cycle of 0 24 second 0 12s ON Unrecoverablealarm Blink 73 The LED blinks at a cycle of 0 24 second 0 12s ON 41701301TH Rev 1 60 6 5 Troubleshooting If a trouble occurs in the OKIPAGE 8w Lite 8z troubleshoot according to the following procedures Trouble Trouble indicated by the message displayed on the status monitor I Troubleshoot according to Status Monitor Message List See Section 6 5 1 L 6 5 1 L Image problem or trouble not displayed on the status monitor Status Monitor Message List Perform detailed troubleshooting according to the troubleshooting flow See Section 6 5 2 Troubleshoot according to Sec
46. on in Main Menu Dialog 3 Clickthe Data Upload button in EEPROM Operations EEPROM data read is completed 4 The read EEPROM data is displayed in Dialog of the maintenance driver 5 Leave the display of the maintenance driver as is and replace the main control board 6 Click the Data Download button in EEPROM Operations EEPROM data write is completed Depending on the level of a main control board failure parallel I O failure etc however EEPROM data may be unable to be uploaded In such a case use the maintenance utility to perform the following adjustment after replacing the main control board Setting the LED head drive time Section 4 2 1 Setting the Optical Head Setting the Strb Time Setting the User OEL ODA INT A INT L 41701301TH Rev 1 57 5 PERIODICAL MAINTENANCE 5 1 Periodical Replacement Parts Table 5 1 lists the part and unit to be replaced periodically Table 5 1 Routine Replacement Parts Part Name Replacement Time FAIT to be Checked Remarks Simultaneously Toner cartridge Type 6 When Toner Low is displayed LED head Consumables EP unit Type 6 When Change Drum is displayed Consumables Caution Also reset the drum counter when replacing the I D unit 5 2 Cleaning Remove any toner or dirt and clean the circumference and inside of the printer with a waste cloth Caution Do not touch the OPC drum LED lens array and connec
47. or of 48 steps rotation is two phase excited by the signal from the main control board it performs feeding control by switching normal rotation to reverse rotation or vice versa and turning on off the electromagnetic clutch The relationship between the main motor electromagnetic clutch resist gear drum gear hopping roller is shown in the table below and on the subsequent pages Main Motor Electromagnetic Clutch Hopping Roller Regist Gear Drum Gear Operation Normal rotation Non rotation Non rotation Rotation Warm up Rotation Rotation Rotation Hopping Reverse rotation Non rotation Rotation Rotation Prinitng 4 LED head The shift and latch registers receive image data from the main control board for each dot line 2 496 LEDs are driven to radiate the image drum 5 Heat Assy The heat Assy consists of a heater a heat roller a thermistor and a thermostat The power supply unit supplies AC voltage to the heater according to the HEATON signal from the main control board to heat the heat roller The main control board monitors the heat roller temperature via the thermistor and keeps the temperature constant by turning on off the heater AC voltage supply If the heat roller temperature rises abnormally the thermostat of the heater voltage supply circuit functions to forcibly suspend the AC voltage supply 41701301TH Rev 1 16 DuipeeJ zg ei1 839VdIMO Jo 2
48. ot Install will be displayed without fail at power on Even in this case the machine should be in printable state so that printing can be guaranteed until the completion of toner repair See the drawing in the next page 41701301TH Rev 1 28 Abnormal toner sensor waveform POWER ON Other cases I D Unit not Installed displayed informed Cover open close Abnormal toner sensor waveform Normal Normal Normal toner sensor waveform Abnormal toner sensor waveform OKIPAGE 8w Lite 8z I D Unit not Installed Toner Sensor Error Abnormal toner sensor waveform Cover open close Cover open close Toner Sensor Error displayed informed Normal printing Normal printing Draft for specification 1 Toner sensor error I D Unit not Installed state should not be stored in the EEPROM 2 A shift to I D Unit not Installed and Toner Sensor Error shall be made at cover open or close 41701301TH Rev 1 29 peiuud eq eys eyep jo eseo y u ed eipauu JO uo papajas eq oi eq j eus 991 8 0N s Aunos umo Anbu uy pue 01195 Aljnjaos0 IM pue p eoisod onseuioq p4eojsod 6 INOO 99 ed pue Jaded yoru
49. over The following print patterns are printed 41701301TH Rev 1 90 APPENDIX PARALLEL INTERFACE 1 Connector Printer side Cable side 2 Cable 36 pin receptacle Type 57 40360 12 D56 made by Daiichi Denshi or equivalent 36 pin plug Type 57 30360 made by Daiichi Denshi or equivalent Plug 552274 1 AMP 552073 1 AMP or equivalent Cable length 6 feet 1 8 m max IEEE std 1284 1994 compliant is recommended for noise prevention Note Cable is not supplied 3 Parallel I F signals Signal Name Signal Direction Data Strobe Printer Negative Compatible nStrobe Nibble Host Clk HostClk Functions Data strobe Data Bit n Printer Positive Data 1 LSB 8 MSB Data line from to host Acknowledge Printer gt Negative nAck PtrCIk PeriphCIk Completion of reception or function Busy Printer gt Positive Busy PtrBusy PeriphAck Data reception not possible Paper End Printer gt Positive PError AckDataReq nAckReverse No paper Select Printer gt Positive Select Xflag Xflag On line Auto Feed Printer Negative nAutoFd HostBusy HostAck Mode switch request Not defined Not used a oV Logic Gnd Signal ground Chassis Ground Chassis Gnd Frame ground a 5V Printer gt Pe
50. r manual feed Yes 15 paper sensor manual feed operating normally No Replace paper sensor manual feed Yes Check the gear block or replace high voltage power supply board P3H Y No Is the paper already fed to paper sensor paper Yes Is paper sensor paper operating normally No Replace paper sensor paper Yes Replace high voltage power supply board P3H No Replace the hopping roller or friction pad Y No Is the hopping roller rotating Yes Check the coil resistance of magnet H Is the resistance normal about 120 Q No Replace magnet H Y ves Is 26 V supplied between CN2 and CN2 Pin2 of the main control board No Replace the main control board Y No Check the gear block or replace the hopping shaft assy Y No Are the CN1 connectors of the pulse motor main and main control board connected No Connect the CN1 connectors correctly Y ves Measure the resistance of the pulse motor main Is the resistance normal about 3 8 Q No Replace the pulse motor main Y ves Replace the main control board 41701301TH Rev 1 67 JAM error 2 2 Paper feed jam Does a paper feed jam occur when the power supply is turned on t Yes Is the jammed paper on paper sensor paper outlet Yes Remove the jammed paper t No Is paper sensor outlet paper operating normally No Replace paper sensor outlet or paper Y ves Replace the high voltage power supply board P3H Y No
51. reset the drum counter Refer to Rplacing the Drum Cartridge in Users Manual YNo Is the LED head installed correctly Check the HEAD connector of the main control board No Contact the LED head correctly Y ves Replace the LED head Has this error been recovered Yes End Caution Set the LED head drive time when replacing the LED head See Section 4 2 1 No Replace the main control board high voltage power supply board P3H or high voltage power supply board P6L 41701301TH Rev 1 75 7 Poor fusing Is the specified paper being used No Use the specified paper xerox 4200 20 Y ves Is the bias spring normal Tension 3 25 kg No Replace the bias spring Y Yes Are the heater connector of the heat assy and the CN1 connector of the power supply unit connected correctly No Connect the connectors correctly Yves Replace the heat assy Has this error been recovered Yes End No Replace the main control board or high voltage power supply board P3H 41701301TH Rev 1 76 Vertical white belt stripe 15 the lens of the LED head dirty Yes Clean the LED head YNo Is the contact plate of the transfer roller in correct contact with the high voltage power supply board P3H See Figure 6 4 E No Contact the contact plate of the transfer roller correctly Yves Replace the transfer roller Has this error been recovered Yes End YNo Is the LED head install
52. ripheral Logic High Power supply max 50mA a Jo Pp oV Signal Ground nStrobe ignal ground e 2 oV x Signal Ground Data 1 8 ignal ground Signal Ground PError Select nAck ignal ground Signal Ground Busy nFault ignal ground OV Signal Ground nAutoFd nSelectln nlnit ignal ground Input Prime Printer Negative nReverseRequest Initialize Fault Printer gt Negative nDataAvail nPeriphRequest Error occurrrence On line OV Not Defined Signal ground Rm Not Defined Not used Printer gt Not Defined Fixed to logic 1 Select In Printer Negative nSelectln 1284 Active 1284 Active Mode switch request 41701301TH Rev 1 91 Connector pin arrangement 4 Signal level INPUT OUTPUT Low OV to 0 8V Low OV to 0 8V High 2 0V to 5 0V High 2 4V to 5 0V 5 Modes IEEE 1284 Compatible mode Nibble mode ECP mode 6 Data bit length 8 bits 7 Receive buffer 2044K Bytes 8 Control Data is received from the host and stored in the reception buffer Block busy control is carried out Signal line control is also carried out 9 Interface circuit a
53. ror occurred See Section 6 5 2 4 Thermister Open Check Error The thermistor is open Replace the heater Assy Thermister Short Check Error A thermistor short occurred Replace the heater Assy Toner Sensor Error Toner sensor error Either the Toner Sensor is out of order or the Drum Unit is not installed Please check Electoromagnetic Clutch Error Electoromagnetic clutch error Printer controller error has occured If turning the printer off on does not clear the error contact your dealer Watch Dog Timeout Error A watchdog timeout occurred To release the error display turn on the power supply again Replace the main control board Motor Timeout Error A motor timeout occurred To release the error display turn on the power supply again Replace the main control board 6 5 2 Status Message Troubleshooting Some failures cannot be corrected according to the status message trouble list Troubleshoot these failures according to the following troubleshooting flowcharts Flowchart No The OKIPAGE 8w Lite 8z malfunctions after the power supply has been turned on Jam error Paper input jam Paper feed jam Paper exit jam Paper size error Fusing error Caution When replacing the main control board troubleshooted according to the troubleshoot ing flowcharts also adjust EEPROM data See Section 4 2 2 41701301TH Rev 1
54. rtification Label The safety certification label is affixed to the following location of the OKIPAGE 8w Lite 8z 20V 50 6091 4 ested 10 Comply With FCC Standards Oki Data Corporation FOR HOME OR OFFICE USE p La LISTED h 3 Be E135780 We 1 4 2 Warning Label Warning labels are affixed to the locations that may cause bodily injury During maintenance do work with enough care while following instructions on these warning labels CAUTION HOT ATTNTION CHAUDE VORSICHT HEIB ATENCION ALTA TEMPERATURA ATENGAO ALTA TEMPERATURA 41701301TH Rev 1 10 2 OPERATION DESCRIPTION The OKIPAGE 8w Lite 8z consists of a main control board two high voltage power supply board a power supply unit and an electro photographic processor The OKIPAGE 8w Lite 8z receives print data from a higher level interface and sequentially stores it in memory The OKIPAGE 8w Lite 8z decodes and edits the received data while storing print data from the interface in memory It sequentially transfers the edited data to the LED head for each dot line The electro photographic processor then prints the data on sheets of paper The display of the higher level host is used for device operation and status display Figure 2 1 is the block diagram of the OKIPAGE 8w Lite 8z
55. s follows Executive Letter Legal 14 Legal 13 A4 A5 A6 B5 Monarch DL C5 COM 10 COM 9 Set the requested paper in the manual feed mode L 9H 69 Category Paper size error Status Message Paper Size Error OPEL Code Table 6 1 Cont d Display Content Paper of improper size was fed 2 52 64 mm L 15 77 400 56 mm Check the paper Also check whether more than one sheet of paper were fed simultaneously To release the error display open the cover then close it If this error occurs frequently see Section 6 5 2 3 Paper jam Paper Input Jam A paper jam occurred when sheets of paper were being supplied Check the paper To release the error display close the cover then close it If this error occurs frequently see Section 6 5 2 2 1 Paper Feed Jam A paper jam occurred during paper feeding Open the cover then remove the jammed paper To release the error display close the cover If this error occurs frequently see Section 6 5 2 2 2 Paper Exit Jam A paper jam occurred during paper ejection Open the cover then remove the jammed paper To release the error display close the cover If this error occurs frequently see Section 6 5 2 2 3 ID Not Installed Installed 1 0 Unit Cover open Cover Open The upper cover is open To release the error display close the cover If this error occurs frequently replace the power supply board
56. s passed the paper sensor Paper outlet jam The trailing part of the paper does not pass the outlet sensor within L mm after the leading part of the paper has passed the outlet sensor 2 52 64 mm lt L lt 15 77 400 6 mm Paper size error The trailing part of the paper does not pass the paper sensor within L mm after the leading part of the paper has passed the paper sensor 2 52 64 mm lt L lt 15 77 400 6 mm Paper Feed Check List Type of Error Paper feed error Supervisory Sensor Reference Value Electromagnetic clutch ON Paper sensor ON 69 8 Paper feed jam1 Outlet sensor ON Paper sensor ON 122 9 Paper size error Paper sensor ON Paper sensor OFF 2 52 64 mm Ls 15 77 400 56 mm Paper outlet jam Outlet sensor ON Outlet sensor OFF 2 52 64 mm L 15 77 400 56 mm Paper feed jam 2 Outlet sensor OFF Paper end sensor OFF 121 9 Unit mm 41701301TH Rev 1 25 Normal rotation Pulse motor OFF main Reverse rotation Electromagnetic OFF clutch 0 Manual feed OFF sensor 0 Paper sensor pH Outlet sensor p Operation mode Warm up Paper feed Printing Timing Chart for Paper Feed Tray Feed 41701301TH Rev 1 26 2 7 Toner Low Detection Hardware configuration of toner sensor The figure below shows the hard
57. stence In this model a micro switch may be activated applying a high voltage to the machine under a state where the cover is slightly opened In this case there is a fear that when a user insert his hand through the opening he may be shocked unless an 1 0 Unit has been installed Safety standard measures EN60950 1992 Therefore with mechanism an interlock system for micro switch shall be added if a machine has no mechanism with I D Unit inside Also for control I D Unit existence detection shall be implemented according to the following method lt Conditions for judging I D Unit existence gt If a toner sensor does not change for 1 2 cycle of toner sensor basic rotation cycle soon after powering on or closing cover no installed I D Unit shall be judged stopping Warming Up motion to shift the machine mode to light malfunction But this error can be recovered by cover open and close operation after installing I D Unit um memes Unit existence detection time 3 04 sec As the toner sensor monitors at intervals of 40 msec the fractional part should be rounded down The conditions for enabling this error should be as follows Valid condition In the case of 31 pages or more in total drum counter Invalid condition In the case of 30 pages or less in total drum counter a significant malfunction toner sensor error shall occur But when the toner sensor breaks down with 31 or more counted in total at the drum I D Unit n
58. t Cable Assy 40591203 Bias Spring R Back Up Roller 4PP4083 1137P001 Sheet Guide 40562401 Heat Assy 40592801 Heat Assy 40592802 Stopper Spring 40034001 Caution Label TR 4PB4091 6047P001 Film Guide 4PP4083 1139P001 Bearing Gear 40634701 Fan 40625401 Contact CB 40638001 CONN Cord HV 40638101 Washer TR 40688601 Guide Gear T 40710301 Cover HV 40413401 41701301TH Rev 1 87 Figure 8 3 Base Plate Unit 88 41701301TH Rev 1 Table 8 3 Base Plate Unit Part Name Base Plate Assy Part No 40592201 Remarks Insulation Sheet A 40722501 Power Supply Unit 40455701 Power Supply Unit 40455801 Main Control Board U8S 41222702 AC Cord 3YS4011 1315P001 TAIWAN USA AC Cord 3YS4011 1266P001 Continental AC Cord 3YS4011 1270P001 U K AC Cord 40398702 Australia AC Cord 40483802 China Insulation Sheet B 40043001 High Voltage Power Supply Board P6L 40605601 Insulation Sheet C 40593101 TW VF 23 0 1 x 0 8 210 2381004P0009 TW VF 6 0 1 x 0 8 85 2381015P0001 41701301TH Rev 1 89 APPENDIX LOCAL PRINTING DEMO PAGE PRINTING The following operation enables the OKIPAGE 8w Lite 8z to print data by itself With the cover open turn on the AC switch and then close the c
59. the flat cable assy is firmly fitted with both the LED Head and connector HEAD An improper fit may damage the control board and LED head 41701301TH Rev 1 42 3 3 8 Paper Holder 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount paper holder 1 3 Unlock and dismount paper guide L and paper guide R 3 4 Remove the claw and dismount hopper spring 4 5 Remove the claw and dismount stopper spring 41701301TH Rev 1 43 3 3 9 Side Plate M and Idle Gear Perform parts replacement while making the base frame assy stand so that side plate M will face upward 1 Dismount the upper cover assy See Section 3 3 5 2 Remove two screws 1 and two claws then dismount plate side 3 Dismount earth plate 3 two idle gears P 2 idle gear idle gear idle gear 28 0 idle gear heat 8 regist bearing 9 and bearing gear 40 41701301TH Rev 1 44 3 3 10 Heat Assy This section explains how to dismount the heat assy and parts in the assy lt Dismounting the heat assy gt 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount the high voltage power supply board P3H See Section 3 3 6 3 Remove two screws 1 disconnect connector 2 and dismount heat assy 3 41701301TH Rev 1 45 3 3 11 Drive Shaft E Eject and Eject Roller 1 Dismount the upper cover assy See Section 3 3 5 2 Dismount top cover assy See S
60. tion 6 5 3 Table 6 1 lists the statuses and troubles to be displayed on the status monitor in the message format 41701301TH Rev 1 61 L 9H 29 Category Normal status Status Message Warming Up OPEL Code Table 6 1 Display Content Warming up status Normal operation Online Ready Online ready status Normal operation Power Save Mode Power save status Normal operation Device Active Device is Active Device is in operation Wait until it completes the proceeding Toner Low The toner amount of the toner cartridge is small Normal operation Toner Sensor The 1 0 unit is not installed or the toner sensor is faulty Install the I D Unit or replace the toner sensor Change Drum Life of I D drum Change the I D Unit Manual Paper In The paper is in the manual feed mode Replace the 1 0 unit Note Be sure to reset the drum counter after replacing the D unit Printing In Progress Non Warning Toner Low Printing in progress 3 Change Drum Normal operation Ejection In Progress Non Warning Toner Low 3 Change Drum X 0 X 1 X 2 X 0 X 1 X 2 Ejection in progress Normal operation Manual Request Executive Letter Legal 14 Legal 13 A6 5 4 5 Monarch COM 10 DL C5 COM 9 Request the paper to be set in the manual feed mode The paper sizes are a
61. to dismount the AC cord in the following procedures i Turn off the POWER switch of the printer O ii Disconnect the AC inlet plug of the AC cord from the AC receptacle iii Disconnect the AC cord and interface cable from the printer b Be sure to reconnect the printer in the following procedures i Connect the AC cord and interface cable to the printer ii Connect the AC inlet plug to the AC receptacle iii Turn on the POWER switch of the printer Disconnect Reconnect 2 Do not disassemble parts as long as the printer is operating normally 3 Minimize disassembling Only the parts indicated in the parts replacement procedures can be dismounted 4 Use only the specified maintenance tools b Disassemble parts in the specified sequence otherwise parts may be damaged 6 Temporarily tighten small parts such as screws and collars to the original locations because they tend to be lost easily 7 When handling ICs such as CPUs ROM and RAM and PC boards do not wear gloves that easily cause static electricity 8 Do not place PC boards directly on devices and floors 41701301TH Rev 1 31 Maintenance Tools Table 3 1 lists the maintenance tools necessary for parts replacement Table 3 1 Maintenance Tools Maintenance Tools No 1 100 Phili screwdriver 2 2 5 mm screw Remarks No 2 100 Phili screwdriver 3 5 mm screw No 3 100 Phili screwdriver No 5
62. tor block of the LED head 5 2 1 Cleaning the LED Lens Array When a white belt or a white stripe void light printing occurs in the vertical direction of the print surface clean the LED lens array or replace the toner cartridge Caution Be sure to use a LED head cleaner to clean the LED lens array White belt or stripe void light printing Figure 5 1 41701301TH Rev 1 58 1 Set the LED head cleaner in the LED lens array as shown in the figure below and slide the cleaner left and right several time to clean the head Caution Do not press the LED head cleaner against the LED lens array LED lens array LED head cleaner Figure 5 2 41701301TH Rev 1 59 6 TROUBLESHOOTING PROCEDURES 6 1 Troubleshooting Tips 1 Check the basic check points written in the user s manual 2 Gather detailed failure information as much as possible from the customer 3 Check the printer under the condition close to that under which the failure occurred 6 2 Check Points Before Correcting Image Problems 1 Is the printer running in proper ambient conditions 2 Are consumables toner and EP unit replaced correctly 3 Are sheets of paper normal 4 Is the EP unit set correctly 6 3 Notes When Correcting Image Problems 1 Do not touch the surface of the OPC drum nor place foreign matter on it 2 Do not expose the OPC drum to direct sunlight 3 Do not touch the fuser because it heats up during operati
63. ware configuration of the toner sensor Image drum unit Hardware Configuration of Toner Sensor Toner detection method 1 Toner sensor monitoring conditions are shown in the figure below Toner sensor Magnet draw in tl Caution The toner sensor is not monitored when the drum is inactive a When the toner low state continues twice Toner Low occurs This state is monitored at a cycle of 40 milliseconds b When the toner full state continues twice Toner Low is released This state is monitored at a cycle of 40 milliseconds When the toner sensor does not change over two cycles T x2 the toner sensor alarm state occurs d After the EP unit has been replaced after the drum counter has been reset Toner Low is not detected when the drum counter indicates 1 to 100 counts 2 The basic rotation cycle of the toner sensor is as follows Basic rotation cycle of toner sensor 2 5 sec Toner low time t1 gt 0 64 sec Toner full time 0 64 sec gt t1 gt 0 28 sec 41701301TH Rev 1 27 2 8 Cover Open Opening the stacker cover turns off the microswitch on the high voltage power supply board to suspend 5V supply to the high voltage power supply This results in the stop of all high voltage outputs Atthe same time the CVOPN signal is issued to notify the main control board of the switch status and cover open processing is executed 2 9 Detecting I D Unit exi

Service Manual

Contents

Download Pdf Manuals

Related Search

Related Contents