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OKIDATA Okipage 4w Service Manual

1. w n e ejm S 18 19 a 3 ad J a4 35 J e Connector pin arrangement signal Narre DATA STROBE DATA BIT 1 DATA BIT 2 DATA BIT 3 DATA BIT 4 DATA BIT 5 DATA BIT 6 DATA BIT 7 DATA BIT ACKNOWLEDGE BUSY PAPER END SELECT AUTOFD a CHASSIS GROUND 5 siy INFOT PRIME FALLT OM SELIN Direction PR gt PR lt PR PR PR PR PR PR PR PR PR Page 85 Service Guide OKIPAGE4w Chapter B Parallel Interface Function Compatible Moge Parallel data sampling strobe Printer parallel input output data competion of input data reception The ORIPAGE 4w is not ready to receive cata Paper end detection Select state Online carriage return control Net used Grounding for signals Frame ground AO mA mE Grounding for signals Initaleation signal Faper end or alarm Grounding for signals Net used High ewel 3 3 KCI Data input enable or disable Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 86 OKIDATA Sor haper B Peale ere 4 Signal level LOW O V to 0 8 V HIGH 2 4 V to 5 0 V Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata
2. Is the terminal of the EP unit in correct contact with the contact plate See Figure Mo Replace the main control board or high voltage power supply boa m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 68 DATA Service Guide OKIPAGE4w OKI Chapter 6 Troubleshooting Procedures Dark background density 2 Dark background density Has the image drum been exposed to light Yes cet the image dum in the OKIPAGE 4w ang wait for about 30 minutes MHo Is the heat roller of the fuser assy dirty Yes Clean the haat roller MHo ls the terminal of the EP uni in correct contact with the contact plate See Figure amp 4 and Figure 6 5 0 Ho Wake sure the teminal contact is correct Yes Replace the image dmn m Has the error ben correcte YES Eng Caution After replacing the image drum eset the drum counter Refer to Replacing the Crum Ganndge in the Soft Wanualer Product Information Cauick Ne Replace the main contre board or high voltage power supph boa m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 69 DATA Service Guide OKIPAGE4w OKI Chapter 6 Troubleshooting Procedures Paper is blank 3 Paper is blank
3. 4 4 Test Print Test Print is used to check whether the printer can print data normally after the maintenance utility has terminated Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 97 te Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility 4 5 Option Option is used to execute the following functions 1 Printer Engine Reset Initializes the engine menu and counter 2 EEPROM Upload Uploads EEPROM contents to the file 3 EEPROM Download Downloads data from the file to EEPROM 4 Printer RAM Check Checks printer RAM 5 User Sets a destination default ODA OEL INTL INTA See Figure C 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 98 wi rA Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility 4 6 About About displays the following information Engine maintenance utility version information Printer version information and memory size information Printer device ID information See figure C 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page
4. Page Buffer Overflow Print Over Run Program ROM Check Error 40 01 40 10 60 10 Paper of improper size was fed 2 52 64 mm L 15 77 400 56 mm A paper jam occurred when sheets of paper were being supplied A paper jam occurred during paper feeding A Paper jam occurred during paper ejection The upper cover is open The page buffer overflowed because there are a large number of print data A print overrun occurred because print data is complicated An error occurred during program ROM check Check the paper Also check whether more than one sheet of paper were fed simultaneously To clear the error display open the cover then close it Check the paper To release the error display open the cover then close it Open the cover then remove the jammed paper To clear the error display close the cover Open the cover then remove the jammed paper To clear the error display close the cover To clear the error display close the cover If this error occurs frequently replaced the power supply board To release the error display press the reset button on the status monitor of the printer driver Install option RAM or reduce the number of print data To clear the error display press the reset button on the status monitor of the printer driver Simplify the print data format Replace program ROM or the main control board When replacing the main control
5. Thank You for purchasing this Factory Service Manual on EBAY from PCTECHI NFO Click Here for more Factory Service Manuals for other Computer and Printer Copier Manufacturers from PCTECHI NFO Page 1 FA Service Guide OKIPAGE4w OKIDATA Chapter 0 General Manual Information OKIDATA OKIPAGE4w LED Page Printer Service Manual Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual 09 17 97 Note This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi which is ideal for printing but does not view on most displays well Okidata is a registered trademark and OkiPage is a trademark of Oki Electric Industry Co Ltd HP LaserJet and PCL5e are trademarks of Hewlett Packard Co Adobe and Acrobat are trademarks of Adobe Systems Incorporated Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Table of Contents Page Service Guide OKIPAGE4w 0 General Manual Information Front Cover 1 Preface 2 1 Configuration CONFIGURATION 3 Printer Configuration 4 Specification 5 Safety Standards Certification Label 6 Warning Label 7 2 Operation Description OPERATION DESCRIPTION 8 Main Control Board 9 Power Supply Unit 10 High Voltage Power Supply Board 11 Electro Photographic Processor 12 Electro Phot
6. Ho Replace the paper sensor exit or dean the outlet sensor on the high voltage power supply board Yes Replace the high voltage power supply board Exit roller Paper sensor exit Heat roller Trarefer roller Paper sray E manal feed Paper feeding direction omer Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 65 DATA Service Guide OKIPAGE4w OKI F Chapter 6 Troubleshooting Procedures Fuser assy error 4 Fuser assy error Turn the power supply off then on again Dees the Halogen lamp of the heat assy go on No Is the Halogen lamp or thermostat disconnected Yes Replace the fuser assy No Replace the power supply unit Yes Arethe CN2 connectors of the power supply unit and main control board connected correctly ho Lonned the CN2 connedors properly Yes Replace the main control board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Service Guide OKIPAGE4w OKIDATA Chapter 6 Troubleshooting Procedures Page 66 Image Troubleshooting This section explains how to troubleshoot when an image problem occurs Figure 6 3 gives examples of image problems An image is light or blurred entirely
7. dislocating its position in direction a 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 image drum unit At printing e p OA NSA i Pulse motor main The paper advances further in synchronization with the print data Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 16 at Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Charging Charging is performed by applying DC voltage to the charge roller in contact with the surface of the image drum High worlage power Charge roller Supply F image drum Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 17 Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Exposure Light emitted from the LED head irradiates the negatively charged surface of the image drum The surface potential of the irradiated surface attenuates to form the electrostatic latent image corresponding to the image signal LED head LED head Charge roller Image drum Image drum Copyright 1997 Okidata Division of OKI Americ
8. Page 24 H rA Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Cover Open Opening the stacker cover turns off the microswitch on the high voltage power supply board to suspend 5 V supply to the high voltage power supply This stops all high voltage outputs At the same time the CVOPN signal is issued to notify the main control board of the switch status and cover open processing is executed Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 25 OKIDATA aa PARTS REPLACEMENT This chapter explains how to replace parts assemblies and units in the field The replacement procedures to be explained here include disassembling not assembling When reassembling parts assemblies and units reverse the disassembling steps Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 26 OKIDATA aa Precautions for Parts Replacement 1 Be sure to disconnect the AC cord and interface cable before replacing parts a Be sure to disconnect the AC cord in the following procedures i Turn off the POWER switch 0 ii Disconnect the AC plug from the power outlet iii Disconnect the AC cord and interface cable from the printer
9. Parts Layout This section explains the layout of main parts Upper Cover Assy Spur gear A Guide slide R Guide slide L Figure 3 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 28 OKIDATA a Base Frame Unit Paper guide R Paper guide L Wigi T r Fa Lt High wokage power 9 7 supply board Sheet guide Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 29 OKIDATA a Base Plate Unit Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 30 OKIDATA party aera Replacing Parts This section explains how to replace parts and assemblies Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 31 OKIDATA mcr Extend Plate 1 Remove two claws and remove paper support assy 1 as Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any
10. Pressure Roller B Back Up Roller 1 Remove the upper cover assy See Upper Cover Assy in this Chapter 2 Remove the high voltage power supply board See High Voltage Power Supply Board in this Chapter 3 Remove the fuser assy See Fuser Assy in this Chapter 4 Remove the engagement with the left ground then pressure roller B1 Two bearing BUs 2 and two bias springs 3 also come off at the same time Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 43 OKIDATA aa Separator Guide 1 Remove the upper cover assy See Upper Cover Assy in this Chapter j 2 Remove the high voltage power supply board See High Voltage Power Supply Board in this Chapter 3 Remove five screws 1 4 Remove inlet 2 from base frame 3 Removing inlet 2 Insert a screwdriver into the hole on the side of base frame 3 remove the inlet claw from base frame 8 and remove inlet 2 5 Disconnect three cables 4 and connector 11 and remove base frame 3 Then remove screw 10 and disconnect FG cable 12 Disconnecting connector 11 Remove connector 11 by drawing it upward while pushing the clamp lever with a standard screwdriver 6 Remove the paper holder assy See Paper Holder in this Chapter lt 7 Remove two engagements and sheet guide 5 8 Remove friction pad 6
11. b Be sure to reconnect the printer using the following procedures i Connect the AC cord and interface cable to the printer li Connect the AC cord to the power outlet iii Turn on the printer s POWER switch Disconnecting lt 5 Reconnecting 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 disassembled 4 Use only the specified maintenance tools 5 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 can generate static electricity 8 Do not place PC boards directly on devices or floors Maintenance Tools Table 3 1 lists the maintenance tools necessary for parts replacement w eee o e ee Mo 71 700 Philips aem acrem driver am Mo 2 100 Philips e an Mo 3 700 Philips Screwdriver ho 5 200 screwdriver a E Maintenance Utility Table 3 2 Maintenance Utility w ee Jo e oe L Maintenance utility 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 27 OKIDATA party aera
12. 99 LAT A Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility 4 7 Reload Reload is used to reload menu setting values Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com
13. DIA co rtm ler Transfers image data fom Parallel IF to DRAW from DRAM to a video output port and between CPU and DRAMI Parallel interface controller Controls the parallel interface Video output port Controls LED head LED STB output port Tirer Generates Vanous control timing signals for monitoring paper feeding and paper size HO port Inputs and outputs the seraor signalsand motor signal etc P Also performe WO for EEPROM Inputs the feedback signals froma high wotage generation circuit pucel Meret and thermistor signal 2 Program ROM Program ROM contains a program for the equipment EPROM is used as program ROM When mask ROM in the one chip CPU explained in 1 above is valid the EPROM is not mounted For details on short wiring setting see Section 7 2 3 DRAM DRAM is used as resident memory 4 EEPROM EEPROM holds the following data e Menu data e Counter value e Adjustment value 5 Parallel interface The parallel interface receives parallel data from the host it conforms to the IEEE1284 specification Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 10 AF A Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Power Supply Unit The power supply unit supplies 5 V and 24 V to the main control board from 230 VAC 120 VAC Output wo ta
14. Is the LED head connected correctly Check the CNS connector of the main control Doa nd Ne Connect the LED head correctie Yes ls the terminal of the EP unit in correct contact with the contact plate See Figure G6 Ev MHo Make sure the teminal contact is correct Yes Replace the LED head Has the error been corrected Yes Eng Caution Setthe LED h ad drive time when replacing the LED head Sec Section 4 2 1 MHo Replace the main contel board or high voltage power supph boa m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 70 DATA Service Guide OKIPAGE4w OKI POENI Chapter 6 Troubleshooting Procedures Vertical black band stripe 4 Vertical black baned stripe Replace the image drum Has the error been correcter as End Caution After replacing the image drum esetthe drum counter Refer to Replacing the Crum Ganndge in the Soft Ilanualor Product Information uige he Replace the LED head RS Eng Caution Setthe LED h ad drive time when replacing the LED head Sec Has the error ben correcte Section 42 1 MHo Replace the main contel board or high voltage power supph boa m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http
15. Page 23 a A Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Toner Low Detection e Hardware configuration of toner sensor The figure below shows the hardware configuration of the toner sensor image drum unit Agitation bar iron Magnet Toner sensor lever Photointemupter Hardware Configuration of Toner Sensor e Toner detection method 1 Toner sensor monitoring conditions are shown in the figure below Toner sensor oy r e Magnet draw in tl The toner sensor is not monitored when the drum is inactive a When the toner low state is detected twice Toner Low occurs This state is monitored at a cycle of 40 milliseconds b When the toner full state is detected twice Toner Low is released This state is monitored at a cycle of 40 milliseconds c When the toner sensor does not change over two cycles T x 2 the toner sensor alarm state occurs d After the image drum unit has been replaced after the drum counter has been reset Toner Low is not detected until drum counter indicates 100 2 The basic rotation cycle of the toner sensor is as follows Oo pe Yo Basic rotation cycle of toner sensor 4 9 sec Toner low time tl gt 1 2 sec Toner full time 1 2 sec gt t1 gt Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com
16. Used to reload menu setting values Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 92 Ae Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility 4 DETAIL OF EACH FUNCTION 4 1 Engine Menu Setting Engine Menu Setting is used to set display and change the following menu items See Figure C 1 1 Print Position Used to adjust the print start position 2 LED Head Marking No Used to adjust the exposure time of the LED head 3 LED Head Width Used to specify the LED head dot count 4 LED Head Wire Used to specify whether the data wire of the LED head is one wire non adjustment type or two wire adjustment type This printer however can use only one wire type 5 Setting or Humidity Used to adjust transfer current 6 Entry Used to reflect the engine menu setting values on the printer 7 Cancel Used to clear unreflected items Items for which Entry is not specified Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 93 AT A Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility Engine Counter Engine Counter is used to display and initialize the following count values See Figure C 1 lt
17. opx okidata com Page 71 DATA Service Guide OKIPAGE4w OKI J Chapter 6 Troubleshooting Procedures Cyclic defect Caution After replacing the image drum reset the drum counter Refer to Replacing the Drum Cartridge in Soft Manual or Product Information Guide Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 72 DATA Service Guide OKIPAGE4w OKI Perr Chapter 6 Troubleshooting Procedures Print voids 6 Print voids Is the contact plate of the transfer roller in correct contact with the high voltage power supp h bo and fo Wake sure contact is comert es Replace the transfer roller Has the error ben correcte RS Enc Iho Is the terminal of the EP unit in correct contact with the contact plate See Figure amp 4 ABCD Eland Figure 6 5 AaB C 0O E D Wake sure the teminal contact is correct Yes Replace the image drum Apkacing the Drum Cartridge in Soft Ilanual or Product Informa tion uige MH Is the LED head installad corect Check the CNS connector on the main contel f Has the error been correcter eas End Caution After r placing the image drum sethedrum counter Refer to boan MHo Contact the LED head correctly es Replace the LED head Has the error been corrected Yes Eng Caution Setthe LED h ad dri
18. Dot Count There are two possible LED head dot counts Use the following label to identify these types Use LED Head Width in the engine menu table to set the LED head dot count See Figure 4 2 Identifying the types of LED head dot count 122861 UUD Y UI Narrow Type 2496 dots A4 300 AURA IG YM AT ONAT 100001002 Full Type 2560 dots Figure 4 3 4 2 3 Uploading and Downloading EEPROM Data When the main control board is replaced data from the old EEPROM must be loaded into the EEPROM on the new board Use EEPROM Operations in the option tab of the maintenance utility to download EEPROM data onto the new main control board See Figure 4 4 Download EEPROM data onto the new main control board in the following procedures 1 Check that the printer and PC are connected by the parallel I F then run the maintenance utility 2 Click the Option button in Main Menu Dialog 3 Click the Upload button Upload EEPROM Data 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 Download button Download EEPROM Data 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 uti
19. Figure 6 3 AN renee o Vertical white bandAwhite stripe Fiqure 3 F A Light or blurmed E Dark backgmund Blank paper images entirely density E Figure 6 3 Image Problems wO ANNA AN es Saig ig i O Anona TOLL Ler Wo CLL D Black vertical stripes BE Cyclical defect CF White vertical bets or streaks Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 67 DATA Service Guide OKIPAGE4w OKI POENI Chapter 6 Troubleshooting Procedures An image is light or blurred entirely 1 An image is light or blurred entirely ls the toner low Does Toner Low display 4 Replace toner cartridge Is the specified paper being useg Use the specified paper Is the lens of the LED heag dirty Clean the LED head Is the LED head instalegd correct Check the CNS connector of the main control boarn Install the LED head corecth Is the contact plate of the transfer roller in correct contact with the high voltage power supply boan See Figure 6 4 Fi 1 G4 Aand E Make sure the teminal contact is correct Replace the transfer roller Has the error been corrected Eng Replace the image drum Has the error been corrected Eng Caution After replacing the image drum eset the drum counter Refer to Replacing the Crum Cartigge in the Soft Wanualer Product Information uige
20. Guide OKIPAGE4w OKI Chapter 6 Troubleshooting Procedures Status Message Troubleshooting Some failures cannot be corrected according to the status message trouble list Troubleshoot these failures according to the following troubleshooting flowcharts The OKIPAGE 4 rialunctions atter the power supply has been turned on a Ag Jam emor Paper input jam 2 1 Paper feed jar 2 2 Paper exit jar 2 3 Caution When replacing the main control board troubleshooted according to the troubleshooting flowcharts also adjust EEPROM data Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 60 DATA Service Guide OKIPAGE4w OKI i E Chapter 6 Troubleshooting Procedures The OKIPAGE 4w malfunctions after the power supply has been turned on 1 The OKIPAGE 4w malfunctions after the power supply has been turned on Turn the power supply off then on again Is the LED lit No Is the AC cable connected correctly Ho Connect the AC cable correctly Yes Is 5 supplied between CH1 Pin 7 and CH1 Pin 13 of the high voltage power supply board Pin 7 5 Pin 12 0 No Arethe GN1 connectors of the high voltage power supply board and main control board connected correctly tHo Connect the CH1 connectors correctly Yes Is 6 V supplied between GN2 Pin 2 and CN2 Pin 3 of the main control
21. Process 1 Electro photographic process The electro photographic process is outlined below 1 Charging The surface of the image drum is given a uniform negative charge by applying DC voltage to the CH roller 2 Exposure Light emitted from the LED head illuminates the negatively charged surface of the image drum The surface potential of the lighted surface attenuates to form the electrostatic latent image corresponding to the image signal 3 Development and residual toner recovery The negatively charged toner is brought into contact with the image drum adhering to the electrostatic latent image on the image drum by static electricity This adhesion causes the electrostatic latent image to change to a visible image At the same time the residual toner on the image drum is attracted to the developing rollerby static electricity 4 Transfer When paper is placed over the image drum surface the transfer roller applies a positive charge which is opposite in polarity to that of the toner to the reverse side The toner is attracted by the positive charge and transfers the toner image from the image drum onto the paper 5 Cleaning The cleaning roller temporarily attracts the residual toner on the transferred image drum with static electricity then returns the toner to the image drum 6 Fusing The transferred toner image is fused to the paper by applying heat and pressure Figure 2 5 is a flow diagram of the electro photographic proces
22. The back up roller is pressed against the heat roller by the pressure spring on each side Thermistor Separation claw Heat roller Pressure spring Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 21 i Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Cleaning After transfer is complete the cleaning roller temporarily draws in the residual toner adhering to the image drum with static electricity and then returns it to the image drum image drum Cleaning roller r High voltage f power supply Transfer roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 22 i Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Paper Jam Detection The OKIPAGE 4w monitors the paper status when the power supply is on and during printing In the following cases the OKIPAGE 4w interrupts the printing process and reports a paper jam To resume printing open the cover remove the jammed paper and close the cover 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
23. The transfer roller is composed of conductive sponge material It is designed to bring the image drum and the paper into close contact A sheet of paper is placed over the image drum surface and a positive charge opposite to that of the toner is applied to the paper from the reverse side High voltage from the power supply creates a positive charge on the surface of the transfer roller which in turn transfers the charge to the paper as it contacts the transfer roller The image drum surface attracts the negatively charged toner and the toner transfers to the paper as a result of the positive charge on the reverse side of the paper Image drum Paper High voltage _ power Supply Transfer roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 20 AF A Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Fusing The transferred toner image fuses to the 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 lamp that heats the heat roller The thermistor on the surface of the heat roller keeps its temperature constant A thermostat is also installed for safety If temperature rises abnormally this thermostat opens to suspend voltage to the heater
24. Troubleshooting 59 eiie The OKIPAGE 4w malfunctions after the power supply has 60 been turned on R JAM error Paper input jam 61 TN JAM error Paper feed jam 62 ee Paper exit jam 63 acca Paper size error 64 eer Fuser assy error 65 lmage Troubleshooting 66 or An image is light or blurred entirely 67 R Dark background density 68 POA Paper is blank 69 TENA Vertical black band stripe 70 E Cyclic defect 11 TEA Print voids 72 KEEA Poor fusing 73 TEE Vertical white band stripe 74 se vide Figure 6 4 19 sputheed Figure 6 5 76 7 Wiring Diagram Wiring Diagram Interconnect Signal Diagram 17 PCB Layout 78 8 Parts List Cover Assy Upper 79 Base Frame Unit 80 Base Plate Unit 81 A Local Printing Local Printing 82 B Parallel Interface Parallel Interface 1 Connector 83 Cable 84 Parallel I F signals 85 Signal level 86 Interface circuit 8 Table of Contents Page Timing charts 88 C Maintenance Utility Maintenance Utility Outline Of Maintenance Utility 89 ROLE OF MAINTENANCE UTILITY 90 OUTLINE OF MAINTENANCE UTILITY FUNCTIONS 91 DETAIL OF EACH FUNCTION Engine Menu Setting 92 Engine Counter 93 Exit 94 Printer Status 95 lest Print 96 Option 97 About 98 Reload 99 Page 2 H FA Service Guide OKIPAGE4w OKIDATA Chapter 0 General Manual Information PREFACE This Service Manual describes the maintenance procedures for OKIPAGE 4w LED Page Printers This manual is written
25. board Pin 2 6 Pin amp OV Ho Replace the power supply board Yes HAeplace the main contra board Yes Is 1 2 WY voltage supplied between GM1 Pin 2 and CN1 Pin 13 of the high voltage power supply board Ho Replace the main contra board Yes Replace the high voltage power supply board Yes Replace the main control board Yes Measure the resistance of the pulse motor main ls the resistance normal tabout 12 6 Oy Mo Replace the pulse motor main Yes Replace the main control board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 61 DATA Service Guide OKIPAGE4w OKI IEE Y Chapter 6 Troubleshooting Procedures JAM error Paper input jam 2 1 Paper input jar Des a paper input jm occur when the power suppl amp tamed on Yes E the jammed paperon paper sensor EY Yes Remove the jammed paper Ho E paper sensor E manual Eed paper operating nomnal b Ho Replace paper seror E manual teed or paper Yes Replace the high woltage power supphy board Ho Does a paper input jam occur during paper bading E the paper almeady ted to paper sensor E manual teed Yes ls paper se cor E manual teed operating normal Ho Rie place paper sensor E manual teed Yes T heck the gear block or place high wokage power suppi boad Yes ls papersencore paper operating mo ma
26. board also adjust EEPROM data Device Resident RAM An error occurred during Replace the main configuration error Check Error resident RAM check control board When replacing the main control board also adjust EEPROM data Device EEPROM Check 60 40 An error occurred during Replace the main configuration error Error EEPROM check control board When replacing the main control board also adjust EEPROM data Device Option RAM 60 60 An error occurred during Check the configuration error Check Error option RAM check connection of the Option RAM PC board If the option RAM PC board is faulty replace it Device Fuser Error 60 80 A heater timeout error See Fuser Assy configuration error occurred Error Device Thermistor Error 60 90 A thermistor error Replace the heat configuration error occurred Assy Device Thermistor Open 60 91 The thermistor is open Replace the heat configuration error Check Error Assy Device Thermistor Short 60 92 A thermistor short Replace the heat configuration error Check Error occurred Assy Device Watch Dog 60 00 A watchdog timeout To clear the error configuration error Timeout Error occurred display turn on the power supply again Replace the main control board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 59 DATA Service
27. for any updates to this material http opx okidata com Page 37 OKIDATA party aera Paper Holder 1 Remove the upper cover assy See Upper Cover Assembly in this Chapter 2 Remove paper holder 1 3 Unlock and remove paper guide L 2 and paper guide R 3 4 Remove the claw and remove hopper spring 4 5 Remove the claw and remove stopper spring 5 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 38 goii 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 Remove the upper cover assy See Upper Cover Assembly in this Chapter 2 Remove two screws 1 and two claws then remove plate side M2 3 Remove grounding plate 3 two idle gears P 4 idle gear M 5 idle gear 3R 6 idle gear 2R 7 idle gear heat 8 idle gear R 9 and gear R 10 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 39 OKIDATA party aera Registration Roller 1 Remove the upper cover assy See Upper Cover Assembly in this Chapter 2 Move registration roller 1 to the right and remove it by lifting Two registration bearings 2 also come off at the same ti
28. for use by service personnel Refer to the customer documentation for handling and operating procedures Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 3 own a 1 CONFIGURATION 1 1 System Configuration The OKIPAGE 4w consists of a control block a power supply unit and an engine block See Figure 1 1 ENSIN E UNIT Hero photographic Processor High VWolkage Power supply Board ttn corro Board Power Supply Unit Figure 1 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 4 owe a Printer Configuration The printer unit consists of the following five hardware components e Electro Photographic Processor e Paper Feeder e Main Control Board e High Voltage Power Supply Board e Power Supply Unit Figure 1 2 is the configuration of the printer unit Image Drum Unit Main Cortal Board High Voltage Power yj Supply Board Figure 1 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 5 OKIDATA mani a sparsely E4w Specification 1 Type Desktop 2 Outside di
29. j 3 Remove two screws 1 disconnect connector 2 and remove power supply unit 3 4 Remove insulation sheet 4 5 Remove two screws 5 and remove main control board 6 from base plate 7 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 48 OKIDATA a ADJUSTMENT This chapter explains adjustment necessary when a part is replaced This adjustment 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 service and maintenance personnel may use the maintenance utility This utility cannot be made public for end users Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 49 OKIDATA a Adjustment Types and Functions 4 1 1 Printer Driver This printer driver has the following functions e Drum counter reset e Printer menu default e Cleaning page generation Figure 4 1 1 Drum counter reset This function resets the life of the drum counter when the image drum unit is replaced Clicking the Drum Count Reset button resets the life 2 Printer menu default This function returns the user set menu contents to default setti
30. performed three time Paper feed jam The leading part of the paper does not reach the outlet sensor within a fixed time after it has 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 Supervisory Reference Value Sensor Paper feed error Electromagnetic 69 clutch ON Paper sensor ON Paper feed jam 1 Paper sensor ON 122 9 Outlet sensor ON Paper size error Paper sensor ON 2 52 64 mm Paper sensor OFF lt 15 77 400 56 mm Paper outlet jam Outlet sensor ON 2 52 64 mm lt L Outlet sensor OFF lt 15 77 400 56 mm Paper feed jam 2 Outlet sensor OFF 121 9 20 0 20 0 Outlet sensor OFF Unit mm Normal rotation i Pulse motor OFF i main Reverse rotation Electromagnetic OFF clutch ON Manual Feed OFF Sensor ON Paper sensor eu Outlet sensor pall Operation mode Timing Chart for Paper Feed Tray Feed Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com
31. updates to this material http opx okidata com Page 32 OKIDATA aa LED Head and Head Spring 1 Open top cover assy 1 2 Remove the left clamp and LED head 2 Then remove flat cable assy 3 and FG cable 5 3 Remove two head springs 4 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 33 OKIDATA party aera Transfer Roller 1 Open top cover assy 1 and remove image drum unit 2 2 Remove the right claw Then remove transfer roller 3 two registration bearings 4 and gear T5 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 34 OKIDATA party aera 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 remove image drum unit 3 4 Move paper guide L 4 and paper guide R 5 on the rear of the printer to the center 5 Remove two front claws of upper cover assy 6 and two rear screws A and lift upper cover assy 6 6 Remove spur gear A 7 guide slide L 8 and guide slide R 9 7 Remove lamp 10 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exch
32. y Outlet sensor Heat roller i Transfer roller a heed roller Paper sensor Toner Hopping l Sensor asy T l roller i Manual feed senser 777777 Paper feeding direction z Figure 2 2 Manual feed Monitors whether paper was inserted into the ON Paper exists sensor manual feed sensor section OFF No paper exists Paper sensor Detects the leading edge of the paper ON Paper exists Monitors paper feeding OFF No paper exists Outlet sensor Monitors paper feeding and the paper size ON Paper exists according to the paper sensor arrival and OFF No paper exists passing time Toner sensor Detects the low toner status ON long Toner low OFF short Toner high Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 12 i Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Electro Photographic Processor The electro photographic processor prints out the image data sent from the main control board on sheets of paper Figure 2 3 shows the layout of the electro photographic processor 1 Image drum unit The image drum unit makes toner adhere to the electrostatic latent image with static electricity This electrostatic latent image is formed by light from the LED heads 2 Electromagnetic clutch The electromagnetic c
33. 1 Drum Count Number of revolutions of mounted image drum 2 Total Drum Count Total number of revolutions of image drum after shipment 3 Page Count Total number of printed pages after shipment Note Clicking the Reset button clears each counter 4 Reset All Used to clear all counters Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 94 Fa 08 Service Guide OKIPAGE4w b ATA Chapter C Maintenance Utility 4 8 Exit Clicking the Exit button terminates the maintenance utility Engine Maintenance Driver GUI Preliminary Figure C 1 Main Menu Dialog Preliminary Figure C 2 Option Menu Dialog Preliminary Figure C 3 About Dialog Preliminary Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 95 AF AX Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility 4 3 Printer Status Printer Status is used to display the printer status See Figure C 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 96 te Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility
34. 44601 51609101 53348301 50930801 51237601 53348401 40074601 4PB4083 1171P1 SPP4083 11471P 1 SPB4083 1140P 1 4PP4083 1252P1 SPP4083 1151P 1 3Y B4083 1150F1 Shaft Eject Roller Eject Roller Resistration Bearing 31 Resistration Roller Torsion Spring Gear T transfer Transfer Roller __3PP4083 1181P1 2 Earth Plate A 1 51021501 Side Plate M 1 51021401 Idle Gear P 9 51237801 Tension Plate 1 51022601 51238101 51238201 Idle Gear E B 51238301 Es 40074601 ES 4PB4083 1171P1 w 1 1 par Paar Que oea o o Paornoar aeaoe 1 ooro EE z tall Top Gover Assy OELOKHINT ramsari 1 a d i 50410701 i 3 ee O anaoa n eao 7 Tmas Sing Boek Up Roler _aPPaos rever 1 oeeo e a _ CE mm O l on a o J1 Fuser Assy 120V 1YX4083 120061 56802601 Fuser Assy 230V 1 X4083 1200G2 40034001 40034001 2 Stopper Spring Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 81 OKIDATA ee Base Plate Unit Table 8 Base Plate Unit Bepa ey O eona a io Trevatonsne peos 1 lemm Main Control Board HBMC 2 PCB 4 A4121 2516G2 Without ROM Le T Progam Rom avraorv t67og1_ 1 eRom EA insulation Sheet B 40043001 ER 40043001 Copyright 1997 Okidata Divi
35. Table 8 1 Cover Assy Upper Ta Pian dare a renee Cease senor 7 ao a a wee e N vo eS e smoren O o a sinh o rane O ene O oy ror Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 80 OKIDATA aa Base Frame Unit at Lak F A ae ee ate T lies ns j Wy SS j gt 16 PENNEN W jis p 3 papa FEN a S i r i 4 Figure 8 2 Base Frame Unit Table 8 2 Base Frame Unit Remarks 50221701 55080401 50410601 51711701 51021701 50931001 50410801 56513501 Part No 2PA4083 1132G1 4 A4130 1004G1 SPP4083 1191P 1 4PB4083 1245P1 SPP4083 1244P 1 4PP4083 1246P 1 SPA4083 1193G7 4PB4083 1172P1 Part Name Base Frame Assy High Voltage Power Supply Board Paper Sensor E Friction Pad Separator Guide Compression Spring 7 Toner Sensor Assy Pulse Motor Main 1 53348201 50708801 50809001 51113901 50607701 51237501 51238001 51237401 51237701 4PB4083 1129P1 SPP4083 1128P 1 SPB4083 1127P1 SPA4083 113361 NK2 10 SUS 4PP4083 1143P 1 SPP4083 1184P 1 SPP4083 1142P 1 SPP4083 1781P 1 7 i mr i Hopping Roller 2 Roller Holder Hopping Roller 3 Magnet H Hopping Shaft Hopping Shaft Assy _ eu E i k k mi k dle Gear R dle Gear 2R Gear R Idie Gear M i 1 1 40074601 533
36. a Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 18 F G Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Development Toner is attracted to the electrostatic latent image on the image drum surface converting it into a visible toner image Developing occurs through contact between the image drum and the developing roller 1 As the toner supply roller rotates while rubbing on the developing roller a friction charge is generated between the developing roller and the toner attracting the toner to the developing roller The developing roller surface has a positive charge while the toner has a negative charge Developing blade Charge roller Feel sponge roller Developing roller Image drum 2 The toner attracted to the developing roller is scraped off by the developing blade forming a thin coat of toner on the developing roller surface 3 Toner is attracted to the exposed low potential portion of the image drum at the point of contact between the image drum and the developing roller making the electrostatic latent image visible Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 19 F G Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Transfer
37. ange BPX for any updates to this material http opx okidata com Page 35 OKIDATA aa High Voltage Power Supply Board 1 Remove upper cover assy See Upper Cover Assembly in this Chapter 2 Remove three screws 1 and draw out high voltage power supply board 2 3 Disconnect all the cables 3 from high voltage power supply board 2 and remove high voltage power supply board 2 Caution Note the following when assembling the high voltage power supply board Mount the high voltage power supply board with top cover assy removed or open Take care that cable 3 will not interfere with the paper sensor exit when it is connected Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 36 OKIDATA aa Top Cover Assy and Flat Cable Assy 1 Remove the upper cover assy See Upper Cover Assembly in this Chapter j 2 Remove the LED head See LED Head and Head Spring in this Chapter j 3 Press the left clamp outward and remove the engagement and top cover assy 1 Tension spring 2 also comes off at the same time 4 Disconnect connector CN6 and remove flat cable assy 3 5 Remove screw 5 and remove FG cable 4 Connector CNG Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX
38. board a high voltage power supply board a power supply unit and an electro photographic processor The OKIPAGE 4w receives print data from a higher level interface and sequentially stores it in memory The OKIPAGE 4w 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 4w LED head Main Gontrot Board 120 Wes Vy Figure 2 1 Block Diagram Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 9 i Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Main Control Board The main control board consists of a one chip CPU a program ROM a DRAM an EEPROM a host interface circuit and a mechanism driving circuit The mechanism driving circuit consists of an LED head a main motor and an electromagnetic clutch 1 One chip CPU The one chip CPU is a custom CPU 8 bit internal bus 8 bit external bus 10 MHz clock incorporating mask ROM and CPU peripheral devices This CPU has the functions listed in the table below DRAM co rtro ler Controls DRAM
39. com Page 87 OKIDATA eaa 5 Interface circuit a Receiving circuit p R 43kw 1 0 STROBE 54 b Sending circuit Open Collector 5 saw P 5 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 88 OWDATA sgh to 6 Timing charts a Data receiving timing compatible mode PARALLEL DATA DATA BITS 1 to 8 DATA STROBE 0 5 uE rrin 0 5 p5 ma i BUSY th ran ran ACKNOWLEDGE 0 5 pstord ps b INPUT PRIME timing when the INPUT PRIME signal is enabled INFOT PRIME BUSY SELECT ACKEMOYLE DSE 05 pto 10 re c Data sending timing nibble mode ACKNOWLEDGE BUSY ELIE UNTIL KIESA NWT REAS FAULT AALT TA REA DOTA bO MEA y OTA bth KLAAT SELECT IN R OTA Een MAS O PAPER END AAIR Abe KAR VAb KAI Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 89 AT A Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility MAINTENANCE UTILITY 1 OUTLINE OF MAINTENANCE UTILITY The maintenance utility is an application program that operates on Microsoft Windows 3 1 or higher The maintenance utility has the following functions Transmission of menu setting command to initialize and change setting value
40. compression spring S7 and separator guide 8 9 Remove paper sensor E9 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 44 OKIDATA mcr Pulse Motor Main 1 Remove the upper cover assy See Upper Cover Assy in this Chapter 2 Remove the high voltage power supply board See High Voltage Power Supply Board in this Chapter 3 Remove side plate M See Side Plate M and Idle Gear in this Chapter 4 Remove the base frame See Separator Guide in this Chapter j 5 Remove two screws 1 and remove pulse motor main 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 45 OKIDATA mcr Hopping Shaft Assy 1 Remove the upper cover assy See Upper Cover Assy in this Chapter j 2 Remove the high voltage power supply board See High Voltage Power Supply Board in this Chapter 3 Remove the base frame See Separator Guide in this Chapter 4 Remove the paper holder assy See Paper Holder in this Chapter 5 Remove the sheet guide See Sepator Guide in this Chapter j 6 Remove side plate M See Side Plate M and Idle Gear in this Chapter 7 Raise up roller holder 3 slide hopping shaft assy 1 an
41. d remove roller holder 3 and hopping roller 4 Knock pin 5 also comes off at the same time Take care not to lose it 8 Draw out hopping shaft assy 1 to the right and remove magnet H6 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 46 OKIDATA aa Paper Sensor E Paper Sensor Exit and Toner Sensor Assy 1 Remove the upper cover assy See Upper Cover Assy in this Chapter 2 Remove the high voltage power supply board See High Voltage Power Supply Board in this Chapter 3 Remove the base frame See Separator Guide j 4 Remove the paper holder assy See Paper Holder in this Chapter 5 Remove the sheet guide See Separator Guide in this Chapter 6 Remove the fuser assy See Fuser Assemby in this Chapter 7 Remove eject roller shaft See Eject Roller Shaft and Eject Roller in this Chapter 8 Remove paper sensor E1 9 Remove paper sensor exit 2 10 Remove toner sensor assy 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 47 goii Base Plate 1 Remove the upper cover assy See Upper Cover Assy in this Chapter 2 Remove the base frame See Separator Guide in this Chapter
42. dB A or less 14 Consumables Toner cartridge kit 1 000 5 duty Image drum cartridge 10 000 at continuous printing Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 6 OKIDATA a Safety Standards Certification Label The safety certification label is affixed to the following location of the OKIPAGE 4w ODA thew as amet h ihi sine W ikii sete ang aliwa Adat Mi mia Ait ae Sheds toi OKIPAGE 4w Woga Ne ENB0COB 230V SGIH2 2A QEL IOKI INT Chi Cots Ceponiliea Wide it Jigen Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 7 owe a 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 VORSICHT HEIP ATENCION ALTA TEMPERATURA ATENCAO ALTA TEMPERATURA Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 8 DATA Service Guide OKIPAGE4w OKI Chapter 2 Operation Description OPERATION DESCRIPTION The OKIPAGE 4w consists of a main control
43. er E Ground Drum ro le tte PFE Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com OKIDATA Page 77 Service Guide OKIPAGE4w Chapter 7 Wiring Diagram WIRING DIAGRAM 7 1 Interconnect Signal Diagram iH eid bdalect Main contral Board HEMC PCB SB REG caer iE Poo Ly Higi Voltage ns OPC Pee E Poy z Supply Board E Ls i E Powel Ele p b f Subs Urt E i al i 5 EE 5 f F E IHN TETIT REL T D 0 0 0 9 09 0O 0 o0 OR Goo O66 OO Oo e moe ig ARNE ERE SE mi ai Main Control Board HBMC 2 PCB Fae mate 1770 Mo i Y Eh Ito otn o noton Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 78 OKIDATA SON kapter 7 Wiring Diagram PCB Layout 1 Main Control Board HBMC 2 PCB SP Etemel EPROM i vald SP1 Bo Mask ROM in the CPU is valid 2 High Voltage Power Supply Board Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 79 OKIDATA aaa Cover Assy Upper Figure 8 1 Cover Assy Upper
44. ge Application Had to generate a logic cimut anda high voltage Had to drive the motor and electromagnetic clutch The power supply unit also contains a heater drive circuit Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 11 Ae Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description 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 5 V according to the control sequence from the main control board When the cover is open 5 V supply is automatically interrupted to stop high voltage output 1 35 Ry Voltage to be applied to a charge roller DB 300 Wir 300 V Voltage ta beapplied to a developing roller 450 Wy Voltage to be applied to a sponge roller Voltage to be applied to 4 cleaning roller 500 V 43 5 KWiL760 W Voltageto beapplied to a transfer miller Caution The TR voltage varies with medium and transfer roller impedance 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 Exit roller
45. he paper arrved at the paper sensor ext Yes Is the paper sensor exit operating normally Ho Replace the paper sensor ext Yes Replace the high voltage power supply board No heck the gear block Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 63 DATA Service Guide OKIPAGE4w OKI Chapter 6 Troubleshooting Procedures Paper exit jam 23 Paper exit jam Does a paper ext jam occur when the power supply is turned on Yes Is the jammed paper on the paper sensor ext Yes RHemove the jammed paper No Is the paper sensor exit operating normally Ho Aeplace the paper sensor ext Yas Replace the high voltage power supply board No Lheck the gear block or replace the eject roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 64 DATA Service Guide OKIPAGE4w OKI POENI Chapter 6 Troubleshooting Procedures Paper size error 3 Paper size error Is the paper of the spectied size bang used Ho Use paper of the speotied size Yes ls paper sensor E paper operating normally Ho Replace paper sensor E paper or dean the inlet sensor on the high voltage power supp board Yes lsthe paper sensor exit operating normally
46. lity to perform the following adjustment after replacing the main control board Setting the LED head drive time See Section 4 2 1 above Setting the LED head dot count See Section 4 2 2 above Setting specifications ODA OEL INT A INT L Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 51 Ae Service Guide OKIPAGE4w OKIDATA Chapter 5 Periodical Maintenance 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 Parts to be Checked Simultaneously Toner cartridge When Toner Low is LED head Consumables displayed Image Drum unit When Changed Consumables Drum is displayed Caution Also reset the drum counter when replacing the EP unit Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 52 s s AF A Service Guide OKIPAGE4w OKIDATA Chapter 5 Periodical Maintenance Cleaning Remove any toner or dirt and clean the circumference and inside of the printer with a disposable cloth Caution Do not touch the image drum LED lens array or connector block of the LED head 5 2 1 Cleaning the LED Lens A
47. lly Ho Fe place paper sensor E paper Yes Replace high voltage power suppi board Replace the Step ping roller or friction pad Ho lz the hopping roller rotating a the coil resistance of magnet H ls the meistance mmal fabout 120 tho Replace magnet H E 24 VY supplied between GHS Pind and GHS Pin 2 of the main control boad E the paper alesady fad to paper sensor E paperi S tho Replace the main contol board Check the gear block or replace the hopping shat assy Ho Are the GN connectors of the pulse motor maini and main contol boad con nected Ho Connect the GY connectors corecty Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 62 DATA Service Guide OKIPAGE4w OKI alia Chapter 6 Troubleshooting Procedures JAM error Paper feed jam 2 2 Paper feed jam Does a paper feed jam ccour when the power supply is turned on Yes Is the jammed paper on paper sensor E paperfexity Yes Remove the jammed paper No Is paper sensor E exitbpaper operating normally Ho Replace paper sensor E ext or paper Yes Replace the high voltage power supply board No Has the paper arrived at paper sensor E paper No Is the feed roller rotating Ao Check the gear block Yes Is the image drum seated correctly Mo Seat the image drum properly Yes heck the gear block Yes Has t
48. lutch controls the rotation of the hopping roller according to signals from the control board Exit roller Heat roller ba 13 910 Change roller fe 9 000 Dieaning roller LED head Diru relies a 16 00 Derloping roller a 14 000 i Single tray f Transfer roller fe 15 000 Feed roller Manm F CL E Manual fred sansar pping roller 10 ON OFF W me T Tray oninting Figure 2 3 Layout Drawing of Electro Photegraphic Processor 3 Pulse motor Main This pulse motor of 48 steps rotation is two phase controlled by the signal from the main control board it controls feeding by changing rotation direction and turning on off the electromagnetic clutch The relationship between the main motor electromagnetic clutch regist gear drum gear and hopping roller is shown in the table below and on the subsequent pages Electromag Hopping Regist Gear Operation netic Clutch Roller Normal OFF Non rotation Non rotation Rotation Warm up rotation Reverse ON Rotation Rotation Rotation Hopping rotation Reverse Non rotation Rotation Rotation Printing rotation 4 LED head s4 shift and latch registers receive image data from the main control board for each dot line They control the 2 560 or 2 496 LEDs which illuminate the image drum 5 Fuser Assy The fuser Assy consists of a heater a heat roller a thermistor and a thermostat The power supply unit applies AC voltage to the heate
49. me Take care not to lose them Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 40 OKIDATA party aera Eject Roller Shaft and Eject Roller 1 Remove the upper cover assy See Upper Cover Assembly in this Chapter 3 2 Remove top cover assy See Top Cover Assy and Flat Cable Assy in this Chapter 3 Remove two screws 1 from cover head assy Section 3 3 11 lift the fuser assy and remove idle gear E A 2 and idle gear E B 3 4 Unlock and remove eject roller shaft 4 5 Remove two eject rollers 5 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 41 OKIDATA party aera Fuser Assy 1 Remove the upper cover assy See Upper Cover Assy in this Chapter 2 Remove the high voltage power supply board See High Voltage Power Supply Board in this Chapter 3 Remove two screws 1 disconnect connector 2 and remove heat assy 3 Note Do not disconnect lamp ground screw on left side of fuser 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 42 OKIDATA party aera
50. mensions Height 5 9 150 mm excludes protruding Width 12 2 310 mm portion Depth 7 5 191 mr 3 Weight 1 71 Ib 3 8 kg 4 Development method Dry non magnetic development system Exposure method LED stationary head 5 Paper used Type e Standard paper Xerox 4200 20 Ibs e Application paper manual face up feed Label Envelope OHP paper Transparency Size 14 855 6 mm Max x 8 5 215 9 mm Thickness Automatic feed 16 to 28 lbs 60 to 90 g m 2 Manual feed Label Envelope OHP paper transparency 6 Printing speed First print 25 seconds A4 after warm up Continuous print 4 sheets minute A4 Warm up time 40 seconds 120 VAC for ODA 230 VAC for OEL INT at room temperature 77 F 25 C 7 Paper feeding method Automatic paper feed or manual paper feed 8 Paper delivery method Face down 9 Resolution 300 dpi x 300 dpi 600 dpi x 600 dpi quasi 10 Power input 230 VAC 15 14 for OEL INT 120 VAC 6 15 for ODA 11 Power consumption Peak 450W Typical operation 100W Idle 30W Power save mode 5W 12 Temperature and humidity a During operation 10te 32 C Alto 007o RH relative humidity In storage 10 to 43 C 10 to 90 RH relate hurnidity No condensation is permissible Caution Temperature and humidity in storage are measured with the OKIPAGE 4w packed they are valid for one year 13 Noise During operation 48 dB A or less Standby 38
51. ngs Clicking the Default button automatically returns the user set menu contents to default settings 3 Cleaning page This function cleans the charge roller of the image drum unit it is used when printing is unclear For details on how to operate this function refer to Soft Manual or Printer Information Guide 4 1 2 Engine Maintenance Utility See Appendix C Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 50 OKIDATA i a Adjustment When Replacing a Part The table below lists the parts that require adjustment when they are replaced Part to be Replaced LED head Set the LEd head drive time Set the LED head dot count Image drum unit Reset the drum counter Refer to Soft Manual Main control board Upload or download EEPROM data 4 2 1 Setting LED Head Drive Time Caution When the luminous intensity of a new 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 314 OL T The last three digits indicate the luminous intensity of the LED heed Figure 4 2 4 2 2 Setting the LED Head
52. ographic Process 13 Explanation of Each Operation Hopping 14 Printing and warm up 15 Charging 16 EXposure 17 evelopment 18 Transfer 19 FUSING 20 Cleaning 21 Paper Jam Detection 22 Toner Low Detection 23 Cover Open 24 3 Parts Replacement Parts Replacement 25 Precautions for Parts Replacement 26 Parts Layout 27 Base Frame Unit 28 Base Plate Unit 29 Replacing Parts 30 Extend Plate 31 LED Head and Head Spring 32 ransfer Roller 33 Upper Cover Assy 34 High Voltage Power Supply Board 35 TOp Cover Assy and Flat Cable Assy 36 Paper Holder 37 o9lde Plate M and Idle Gear 38 Registration Roller 39 EjJect Roller Shaft and Eject Roller 40 Fuser Assy 41 Pressure Roller B Back Up Roller 42 separator Guide 43 Pulse Motor Main 44 Hopping Shaft Assy 45 Table of Contents Page Paper Sensor E Paper Sensor Exit and Toner Sensor Assy 46 Base Plate 47 4 Adjustment Adjustment 48 Adjustment Types and Functions 49 Adjustment When Replacing a Part 50 5 Periodical Maintenance Periodical Maintenance Periodical Replacement Parts 51 Cleaning 52 6 Troubleshooting Procedures Troubleshooting Procedures Troubleshooting Tips 53 Check Points Before Correcting Image Problems 54 Notes When Correcting Image Problems 55 Preparation Before Troubleshooting 56 Troubleshooting 57 otatus Monitor Message List 58 otatus Message
53. ows Printer Status LED Indication Ready Lighting Printing in progress Blink 1 Recoverable alarm Blink 2 Unrecoverable alarm Blink 3 1 The LED blinks at a cycle of 1 second 0 5s ON from data reception to printing end 2 The LED blinks at a cycle of 0 24 second 0 12s ON 3 The LED blinks at a cycle of 0 24 second 0 12s ON Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 57 Service Guide OKIPAGE4w ii OKIDATA Chapter 6 Troubleshooting Procedures Troubleshooting If a problem occurs in the OKIPAGE 4w troubleshoot according to the following procedures FPetorm Geta ied Problem indicated by Troubleshoot according to troubleshooting according the message displayed ae to the troubleshooting flaw on the status monitor List See Section 6 5 1 See Section 6 5 2 Image problern for l problem not displayed Troub shoot according to on the status monitor section 6 5 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 58 DATA Service Guide OKIPAGE4w OKI i J Chapter 6 Troubleshooting Procedures Status Monitor Message List Table 6 1 lists the status messages and problems displayed on the status monito
54. r Category Status Message Status Explanation Remedy Code Normal status Warming Up 18 00 Warming up status Normal operation Normal status Online Ready 00 10 Online ready status Normal operation Normal status Power Save Mode 00 20 Power save status Normal operation Normal status Toner Low 10 00 The toner amount of the Normal toner cartridge is small operation replace the toner cartridge Normal status Toner Sensor 10 01 The image drum is not Install the image installed or the toner drum or replace the sensor is faulty toner sensor Normal status Change Drum 10 02 Image drum is nearing Replace the image end of life drum Note Be sure to reset the drum counter after replacing the image drum Normal status Manual Paper In 12 20 The paper is in the manual Normal operation feed mode Normal status Printing In 14 20 Printing in progress Normal operation Progress Normal status Ejection in 14 30 Ejection in progress Normal operation Progress Normal status Manual Request Request the paper to be Set the requested Executive set in the manual feed paper in the manual Letter mode feed mode The paper sizes are as follows Executive Letter Legal 14 Legal 13 A4 A5 A6 B5 Monarch DL C5 COM 10 COM 9 Paper size error Paper Size Error Paper Input Jam Paper Feed Jam 30 00 31 00 32 00 Paper ExitJam 33 00 Buffer overflow Buffer overflow Device configuration error
55. r according to the HEATON signal from the main control board this heats 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 voltage If the heat roller temperature rises abnormally the thermostat in the heater voltage supply circuit cuts off the AC voltage supply z Roller 1c be dran Oy ravers main of pulse mat Men ___ 1 Motor to be driwwen by namal rotation af pulse mor rain an ret Delong tr CH roller b Cleaning foller ot rolker e f _ Heal roller Fead roller Vs Manual printing EN A Roller control by pulse motor mair 1 Normal rotation of puke moar main num roller transfer roller cleaning rollar CH roller davelopang roller heat roller axit roller rotation z Reverse rotaion of pulse motor main Drum roller wanster roller cleaning naler CH roller developing roller heat roller ext roller feed roller hopping Toller rotation Happing qperation from the tray however i perio med when the eeciramagnetic utei e tunned an Figure 2 4 Schematic Drawing of OKIPAGE 4w Paper Feeding Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 13 Ae Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Electro Photographic
56. rray When a white band 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 an LED head cleaner to clean the LED lens array White band or stripe void light printing Figure 5 1 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 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 53 DATA Service Guide OKIPAGE4w OKI Fi Chapter 6 Troubleshooting Procedures TROUBLESHOOTING PROCEDURES 6 1 Troubleshooting Tips 1 Check the basic check points in the Printer Information Guide or Soft Manual 2 Gather as much detailed failure information as possible from the customer 3 Check the printer under conditions close to that under which the failure occurred Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 54 DATA Service Guide OKIPAGE4w OKI f Chapter 6 Troubleshooting Procedures Check Point
57. s Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 14 F G Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Explanation of Each Operation 1 Hopping As shown in the figure below the clutch for hopping is turned on off according to whether current to the coil is on or off When the clutch is OFF Spring for resetting Hopping gear Clutch plate i Pr J H fp Magnetic i substance plate JR ZN Ari A Pin Hopping shaft Hopping roller png 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 turn the hopping roller When the clutch is off the hopping gear is separated from the clutch plate by the spring for resetting so that the hopping roller does not turn Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 15 Service Guide OKIPAGE4w OKIDATA Chapter 2 Operation Description Printing and warm up At warm up Triple gear Transfer gear Hopping gear Gear A i Pulse motor main Rotate the pulse motor main in direction a The planetary gear rotates in direction a
58. s Printer RAM check Test printing Printer information display Printer EEPROM read write Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 90 Fd F A Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility 2 ROLE OF MAINTENANCE UTILITY The maintenance utility is a collection of command send receive functions to perform printer maintenance functions For this reason only service and maintenance personnel can use the maintenance utility This utility cannot be made public for printer end users Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 91 AF Ae Service Guide OKIPAGE4w OKIDATA Chapter C Maintenance Utility 3 OUTLINE OF MAINTENANCE UTILITY FUNCTIONS The maintenance utility is classified into the following functional units and displayed Engine Menu Setting Used to display and change engine menu seitings Engine Counter Used to display and initialize the engine counter Printer Status Used to display the printer status Test Print Used to execute test printing Option Special function About Used to display engine maintenance utility information and printer information Reload
59. s Before Correcting Image Problems 1 Is the printer running in proper ambient conditions 2 Have consumables toner and image drum been replaced as needed 3 Is paper in good condition Does it meet the specifications 4 Is the image drum seated properly Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 55 DATA Service Guide OKIPAGE4w OKI Fi Chapter 6 Troubleshooting Procedures Notes When Correcting Image Problems 1 Do not touch the surface of the image drum nor place foreign matter on it 2 Do not expose the image drum to direct sunlight 3 Do not touch the fuser because it heats up during operation 4 Do not expose the image drum to light for more than five minutes at room temperature Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 56 DATA Service Guide OKIPAGE4w OKI Chapter 6 Troubleshooting Procedures Preparation Before Troubleshooting 1 Message display The failure status of the OKIPAGE 4w 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 4w is equipped with only one LED This LED indicates status as foll
60. s correct Replace the tran ster roller Eng Is the LED head instaledcorrecth Check the CHS connector of the main control boan Install the LED head correcth Yes Replace the LED head Has the error been corrected Eng Caution Setthe LED h ad drive time when replacing the LED head Sec Section 4 2 1 5 the errer been correcte 5 Replace the image dmn m Has the error ben correcte YES Eng Caution After replacing the image drum eset the drum counter Refer to Replacing the Crum Ganndge in the Soft Wanualer Product Information uige he Replace the main contel board or high voltage power supph boa m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 75 DATA Service Guide OKIPAGE4w OKI i J Chapter 6 Troubleshooting Procedures Figure 6 4 Contents A Toner Supply Roller B Developing Roller C Charge Roller D Cleaning Roller E Transfer Roller F Heat Roller Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 76 DATA Service Guide OKIPAGE4w OKI RF Chapter 6 Troubleshooting Procedures Figure 6 5 Contents A Toner Supply Roller B Developing Roller C Charge Roller D Cleaning Roll
61. sion of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 82 OKIDATA Ser eater A Local Pring LOCAL PRINTING 1 The following operation enables the OKIPAGE 4w to print data by itself Operation With the cover open turn on the AC switch and then close the cover The following patterns prints Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 83 OKIDATA me PARALLEL INTERFACE 1 Connector Printer side 36 pin receptacle Type 57RE 40360 730B D29A Daiichi Denshi or equivalent Cable side 36 pin plug Type 57 30360 Daiichi Denshi or equivalent Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 84 ONDATA a 2 Cable Cable length 6 feet 1 8 m max A Shielded cable composed of twisted pair wires is recommended for noise prevention Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com OKIDATA 3 Parallel I F signals Pin Me mo o a me om em Pep py
62. ve time when replacing the LED head Sec Section 4 2 1 MHo Replace the main control board or high voltage power supply boa m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 73 DATA Service Guide OKIPAGE4w OKI F Chapter 6 Troubleshooting Procedures Poor fusing ri Poor fusing Is the spectied paper being used he Use the specified paper xerox 4200 20 6544 Tes Is the Bias spring nermal Tension 2 5 boy Ne Replace the bias spring Yes Are the heater connector of the fuser assy and the CHODI connector of the power supply unit connected comecth MHo Wake sure the connection is Comect Yes Replace the fuser assy Has the error been corrected Yes Eng MHo Replace the main contel board or high voltage power supph boa m Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 74 DATA Service Guide OKIPAGE4w OKI Perr Chapter 6 Troubleshooting Procedures Vertical white band stripe g Vertical white band stripe Is the ens of the LED heag dirty Clean the LED heag ls the contact plate of the transfer roller in correct contact with the high voltage power supply boan See Figure 6 5 iE 1 Wake sure the teminal contact i

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