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Service Manual - OKIPAGE20 OKIPAGE 20 / OKIPAGE 20 DX

1. tha RS 2320 VF ENABLE in HOST VF af Menu 1 Sethe AS 23272 to ENABLE De the follwing items selected for HS232C SERIAL in menu level 2 coincide with those ar toe host side 7 FLOW CONTROL PARITY a BAUC AATE MIN BUSY DATA BITS Mo Uf the selection differs between the printer and the hast change the setting of eg Yas Yas above bema im men based 2 so as fo coincide with the setting at the host side the connector af the serial interface cable connected te the printer properly Connect the connector printer property there defect in ihe serial Interface cabterbroken or bent pin broken wire Replace the serial interface cable Perform the back test uzing The laap teat fumetion in the system mainta nance mode To make this teat it ls necessary to form the following back Connect the loop back connecter part instead of contesting tha hosi i LOUP TEST dapayed ERROR Replace the serisi interface cable ia the printer recovered Yes YES END Pleplace the Main board Replace the Main board or ask the user check the hardware and software af the host side loop back conmector SAC T ARTS Serial inter bl eral interface cable BOTS BNOT USED 11 550 20 OTA 08255 Connection method Test connector connecting drawing do Data cannot be rec
2. due to the Press tha RECOVER key on fra operator panal io release ERROL reasons The operation is continued by pressing Recover the dispis CRE ET cil swilcn Addisonal shouid be rslalled or fe amount of dala be Install an optional ar reduce the ament al reduced print data lange priming data wilhin one page lange dala Too lange DLL data after the compression of trame butler Category LCD status message Trouble o sas API bee Lo ATTERT IGK e md TERT SOW e ABAD Pd id res APRESS C BRIA ELIF PE Of er Lo OWERNIA POST EFE PROHT TRAY ERR PRESS gt UOHER EXP TY REPLACE TER OZ PAPER infcems that the data within the reaming buler erlus The aperation amp cantmued by Recover switch The heal side should be changed F Settings lo be able Ya recognize pointer Busy status and the daba be re iraremitted informs thal the printer occurs an Carun The operation is continued by pressing Recover slgh Tha formatting should be slighty simpiilied It can be canceled in PS mode when the completion ef a job that an emor eecura in serial LF The operation i continued by prassing Recover switch The is Indicated when parity error kamin
3. Qty Recommended Qty 192 100 h hh JMh Bas jowesusuims p 1 B 5 2 4030401 Cover Side R H 1 6 3 40304401 H 1 6 pf 4 40304301 CoverSide F 1 1 6 gf 5_ 40323401 1 1 6 6 450401 Cover Rear 1 B 6 pf NN assy Ff Pp PP Assy ODA mE assy pe PPP Assy OEL 40304502 Frame OP Panel Assy INT 2PA4128 1074 up Stacker G001 ASSy 10 40441301 Manual Feed Assy 1 1 3 6 Sm a 4 4076 5042 Gear P001 13 40378001 1 1 6 14 40378401 CASE Assy Cassette og o eo 15 140607101 Assy SED GO A RS 2 10 53 6 0 5067 Plate BK R P001 18 40285702 Board AAA si 10 W OROM 19 1 8174627 0002 23 2410 10 07 1 10 Location IC6 f err cere fo 8174627 0001 23 2410 10 07 1 Location IC8 P oru pregano ph feet PP pop o o Power Supply 211107011144 d 23 40443501 DUPLEX UNIT ODA j1 4 8 Page 87 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 88 OKJDATA Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates
4. Does a jam error occur after paper feeding Yes isthe paper fed on the inlet sensor lever Yes Gio to A No Goto Does the font feeder paper sensor lever operate smoothhy Na Replace the lever of the front paper sensor Yes Clean the front feeder paper sensor Is the printer recovered YES END Na the front feeder paper sensor assembly is the hopping roller rotating Yes Set the paper property Na lsthe hopping motor rotating Yes Replace the front Teader gear or idle gear 1 44 2 3 Paper feed jam Does a paper feed jam occur whan the power is turned on Yes 15 paper on the paper sensor lever Yes the paper Doss the paper sensor lever operate smoothly Mo the paper sensor lever Yes Clean the paper sensor See Fig 2 3 Sensor Layout Diagram la the printer recovered Replace the Power Supply Unit High Voltage YES END Mo Hasthe paper reached the paper sensor lever Mo ls ihe Drum motor rotating Mo Goto on the next Yes Is the gluch for register roller in Figure 8 2 turned on 7 No a cable from the clutch connected ta CLR connector on the main board Yes Replace the Clutch Is the printer recovered Replace the Main board YES END Goto on the next page A Goto on the next page Wo the drum motar Is the printer recovered Wo Asplace the Mai
5. Circuit Diagram Miustration Resistance Hopping E Between pins 1 and 2 motor Valkw 6 7 ohms Between pins 3 and 4 6 7 ohms 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 85 OKIDATA Mk ome 1 In case of EP ROM or OP ROM al Eee TMi Myke ghoi pug 1T 415 eet dpat pun A1 3 ph pin 2 In case of MASK ROM m red BPEL ES HE EHWELCZS T BRENNEN EENNHTERHNEN bd etd E Fed IER ua B dd BS EI PRI IERIE BENNAENN E HL BENNHAENN HR Hh CU ak hh Roa RR DMT Ba LI Hale gan pk A ass Asana nini MX23U24 TORS T0 O7 HX 23524 0 074 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 86 OKIDATA M 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 bpx okidata com OKIDATA
6. otprocessing md 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 OKIDATA M E20 e The engine maintenance mode is activated when the power is turned ON while pressing to the Form Feed key and Enter key e This mode adopts the menu for function selection The method for exit from this mode depends on the setting e The engine maintenance mode is provided with the following functions 1 Head type setting select LED Head type e Sets the select LED head type 2 Head drive time setting e Sets the drive time of the LED head 3 Head drive time setting at auto head type e This function sets head drive time when HEADTYPE AUTO is selected 4 Head strobe time at 600 x 1200 dpi e This function sets head strobe time at 600 x 1200 dpi 5 Printing start position setting e Sets the printing start position 6 Drum count total display e Displays on the LCD the total number of drum revolutions in the unit counted at the engine 7 Drum count display e Displays on the LCD the total number of EP drum revolutions counted at the engine 8 Setting of standard tray paper feed length e This function sets the paper feed length of standard tray paper 9 Setting of front feeder paper feed length e This function sets the paper feed length of the front feeder
7. Page 133 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder 1 Unscrew a screw 1 to remove the PCB cover bracket 2 2 Take away all connectors 3 and three screws 4 to remove the Board BBB 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 bpx okidata com Page 134 Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 1 Unscrew five screws 1 to remove roller cover bracket 2 and PLATE Earth L 3 2 Disengage latches to remove the Lever paper end 4 and Lever paper near end 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 bpx okidata com Page 135 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder 1 Remove the Cover front assy See section 3 3 2 2 Remove the PCB cover bracket See section 3 3 3 3 Remove the roller cover bracket See section 3 3 4 4 Unscrew seven screws 1 to remove the bottom bracket 2 5 Unscrew five screws 3 to remove the Frame side L assy 4 and Frame side 5 6 Take away two screws 6 and connector to remove the Motor 7 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OK
8. be used Paper type Plain paper hick paper OHP film Post card label sheet Envelope Quantity of paper A6 106 x 148 mm A4 64 90 g m 64 90 gin Post card A4 size equivalent 64 128 g m C5 DL COM 10 COM 9 Monarch 64 90 g m approximately 50 sheets of envelopes can be set at a 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 bpx okidata com Page 154 OKIDATA Link Hopper power Upper cover Rolar g Paper supporter Paper guide L I 1 eM E M a M Y Square shaped Tes YS e fame 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 155 OKIDATA Servie papier E 2 1 General Mechanism 2 2 Hopper Mechanism 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 156 OKIDATA HL The sheet or envelope at the very bottom of the stack is fed into the printer one at a time when the Multi Feeder receives the signal from the printer 1 First the hopping motor rotates in the dir
9. 58 40607101 frame assy 1 6 59 4049600 PLATE Damper 1 0 3 6 60 3 165956 1 1 B 6 61 40387401 plae Fath FR 1 1 B 6 hM 62 40387601 1 6 63 40387501 pPlae Fath BR 1 B 6 64 40387301 Plate Earth BL 40583601 Core Assy 2nd Tray Sa Printer or 2nd Tray Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 152 OKIDATA Servie papier E This Handbook is intended for the service personnel and describes the field maintenance methods for Multi Feeder option of the OKIPAGE 20 Series LED Page Printer Refer to the USER S MANUAL for operating instructions 1 1 Functions 1 2 External View and Component Names 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 OKIDATA Page 153 Service Manual OKIPAGE20 Chapter E Multi Feeder This Multi Feeder is installed on the front section of the printer and it supplies paper automatically through the operation of hopping motor which is driven by signals sent from the printer The main functions are the followings e Paper that
10. LEVER Lock Dup 3 From front side of printer snap fit LEVER Release Dup into the boss in Hopping Frame a g Boss TEs Snap Fit nin Boss LEVER Helease Snap FH LEVER Release Cup 4 After installing Duplex Unit put back the Paper Cassette into 1st Tray Note As the direction is changed from to CCW to from CW with right and left pay attention to it 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 101 OKIDATA This section covers the procedures for the disassembly reassembly and installations in the field This section describes the disassembly procedures and for reassembly procedures basically proceed with the disassembly procedures in the reverse order 3 1 Precautions Concerning Parts Replacement 3 2 Parts Layout 3 3 Parts Replacement Methods 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 102 OKJDATA 1 Parts replacements must be carried out by first turning the printer power switch off O and removing the Duplex Unit from the printer 2 Do not disassemble the Duplex Unit if it is operating normally 3 Establish the extent of disassembly suitable for the purpose of
11. MENU Expansion RAM System area Working area used for the program Raster buffer Stores converted bit image data Expandable the host interface o o receive data and stores the resulted data DLL macro buffer Stores soft fonts and macro data ss Expandabe 2 nt cache buffer Stores bit map fonts generated by the font Enable Expandable rasterizer based on scalable font information Fo 4 EEPROM The EEPROM has a 1 kbit capacity and stores the following data e Menu data e Various counter data page counter drum counter fuser counter etc e Adjusting parameters LED head drive time print start position etc 5 LSI LZ9FF22 Built in device Function Serial port Control of serial interface between controller and 2nd tray 3rd tray Multi purpose feeder Control of serial interface between controller and Duplex unit Motor driver controller Control of Hopping motor I O port Inputting of various sensor signals Output of various control signals 6 Host interface e Centronics bi directional parallel interface e 5232 interface e OKI HSP interface Option The single effective interface or the automatic interface select mode can be selected using the menu If the busy state of the printer continues for a long time period the buffer near full control releases the busy status at constant intervals even if the host side is busy so not to cause the interface time out at the hos
12. OKIPAGE20 Chapter D Second Third Paper Feeder to PRINTER UNIT j 2nd TRAY end and TCP tray auto setting switch 12 INEENS BOARD BBB to 3rd TRAY 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 150 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder Paper near end sensor Mater driver Paper end sensor 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 151 Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder Qty Recommended Qty 21 50 100 000 Frame side L assy rfp b PP Maintenance Eur eam P001 40349102 Lever link caulking 4PP4076 5358 Link support P001 40607201 opring Sheet Sh P001 a WM e P001 _ P002 Ybor uer PP P Plo _ P001 13 140488801 Guide cassette 1 8 Maintenance 14 40349101 Leverlink Caukng 1 1 6 Pho ee PP P001 uu ee RN P001 17 40368303 Board PXC 1 1 B 6 18 40433001 Plate eart
13. The listing of the statuses and problems displayed in the form of messages on the LCD is provided in Table 4 1 Classification LCD Status Message Recover Method Informs that a jam occurs Remove all the papers REMOVE THE PAPER in retracting papers into from the inside of printer the reverse roller within unit and Duplex unit and the duplex Unit close the cover Jam Error Informs that a jam occurs Remove all the paper REMOVE THE PAPER in retracting papers into from the inside of printer the reverse roller within unit and Duplex unit and the Duplex Unit close the cover Jam Error DUPLEX FEED JAM Informs that a jam occurs Remove all the papers REMOVE THE PAPER in reversing papers in the from the inside of printer reverse roller within the unit and Duplex unit and Duplex Unit close the cover Jam Error DUPLEX FEED JAMG Informs that a jam occurs Remove all the papers REMOVE THE PAPER in impinge feeding from the inside of printer papers within the Duplex junit and Duplex unit and Unit close the cover Jam Error DUPLEX OPEN JAM Informs that the 1st tray Remove all papers from REMOVE THE PAPER is pulled out in the inside of printer unit paper remaining state and Duplex unit and when feeding papers close the cover within the Duplex Interface Timeout Informs that an Verify connection of time out occurs between LEX PCB and the printer and Duplex square shaped connector Replace the square shaped connector if
14. 3 Parts Replacement 3 0 Parts Replacement 24 3 1 Precautions for Parts Replacements 25 3 2 Parts Layout 26 3 3 How to Change Parts 27 3 3 1 Face up Stacker Assy 28 3 3 2 Contact Assy 29 3 3 3 DC Fan Motor 30 3 3 4 OP Panel Assy 31 3 3 0 Board AAA 32 3 3 6 Stacker Assy Damper Arm Cover Rear 33 3 3 Sensor Stacker Full 34 3 3 8 Cable cover guide film 35 3 3 9 Damper 36 3 3 10 Feeder Unit Front 37 3 3 11 Roller Assy Regist 38 Table of Contents Page 3 3 12 Motor Main 39 3 3 13 Guide Assy Eject 40 3 3 14 Heat Assy 41 9 9 15 Roller feed C 42 3 3 16 Roller Assy BK 43 3 3 17 Roller Assy Feed 44 3 3 18 LED Head 45 3 3 19 Paper cassette ROLLER Ass Feed 46 ROLLER Assy Hopping 9 9 20 Frame Assy Separation 47 3 3 21 Transfer Roller TR Gear TR Bearing 48 3 3 22 EP lock shaft 49 3 3 23 LEVER Assy Out Sensor 50 3 3 24 Toner sensor lever 91 9 9 25 Paper sensor lever 52 3 3 26 Inlet sensor lever o3 3 3 27 Power supply unit 54 3 3 28 Lever Paper end amp Lever Paper near end 55 9 9 29 Guide Assy Cassette L 56 9 9 90 Guide Assy Cassette 57 4 Adjustment 4 0 Adjustment 58 4 1 Maintenance Mode and Functions 99 User maintenance mode 60 C oystem maintenance mode 61 Engine maintenance mode 62 4 1 1 User maintenance mode 63 Be 4 1 2 System maintenance mode 64 A 4 1 3 Engine maintenance mo
15. Alter the LED head aet The printer in the engine melnie nance mode taming the power on whila pressing tha FORM FEED and ENTER keys Set tha LED haad drive irme Refer io Section 4 2 Yes Replace the image drum cartridge the roubis bese removed Yes End Note Aller replace the image drum cartridge set the printer in Pme user maintenance rede by turning the power on whde pressing the MENLI Reset Ine drum counter Heter to User s Manual Replace the Main board e Power Supply Unit High Voltage B snowy print of high density pattem 5 toner low Yes Supply toner Mo 5 paper of the specified grade used No Use paper of the specified grade Yes Clear ihe lens Mo Is the LED head installed property nstall the LED head orapary Wes lsthelens of tha LED head dirty Yes Increase the printer setting number 0 1 Rafer to Users manual Blockly faded print Is toner low Yee toner No Is paper of he specified grada used Use paper of the specified grade Wes Clear the lens Is LED head installed property Install the LED head property Yes lsthelens of the LED head dirty Yes Decrease the printer setting number 0 1 Refer to Users manual Figure 6 5 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any up
16. See section 3 3 2 2 Unscrew two screws 1 to remove PLATE Earth F R 2 3 Unscrew three screws 3 to remove PLATE Earth F R 2 4 4 Disengage the latch to remove the Bearing L 5 GEAR Z40S8 6 Bearing 7 and ROLLER Feed RV 8 At this time Knock Pin 9 can be removed simultaneously 5 Unscrew the screw 10 to remove the PLATE Earth BTM 11 6 Disengage the latch and remove two PULLEY MX25 12 Mini Pitch Belt 13 and two Bushes 14 7 Disengage the latch to remove the Bearing Feed 15 and ROLLER Feed F 16 8 Remove the E Ring 17 and Bush 18 9 Unscrew two screws 19 to remove the GEAR Assy 20 At this time the GEAR Z40S6 21 Knock Pin 22 and ROLLER Feed 23 can be removed 10 Unscrew two screws 24 to remove Motor 25 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BP X for any updates to this material http bpx okidata com Page 110 OKIDATA Duplex Unit 4 1 Precautions Prior to the Troubleshooting 4 2 Preparations for the Troubleshooting 4 3 Troubleshooting Method 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 111 OKIDATA Duplex Unit 1 Go through the basic checking items provided in the Operator Guide 2 Obt
17. See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 10 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description The OKIPAGE20 Series Printers consist of a main control board a power supply unit 120V 230V a power supply unit high voltage an operator panel and an electro photographic process mechanism The control board receives data through a host I F decodes and edits the data and stores the edited data in a memory After completing edition of one page of data it references the font memory and generates bit data on the same memory At the same time it transfers the bit image data to an LED head in units of one dot line The electro photographic process mechanism prints data on paper The operator panel is used for operations and status display Fig 2 1 shows an OKIPAGE20 Series Printer block diagram Figure 2 1 OKIPAGE 20 Series Printer 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 11 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description The control board consists of an one chip CPU a LSI program font ROMs four DRAMs an EEPROM a host interface circuit and a mechanism driving circuit 1 One chip CPU The one chip CPU is a custom CPU 32 bit interna
18. associated with the image signal LED head 4 Charge LED head lir aee Paper 5 Developing Toner is attracted to the electrostatic latent image on the image drum surface to convert it into a visible toner image Developing takes place at the 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 allowing the toner to be attracted to the developing roller The developing roller surface is charged positive and the toner negative Doctor bia Charge rollar Taner supply rolke roller Image drus 2 The toner attracted to the developing roller is scraped off by the doctor blade forming a thin coat of toner on the developing roller surface 3 Toner is attracted to the exposed part low potential part of the image drum at the contact between the image drum and the developing roller making the electrostatic latent image visible 6 Transfer The transfer roller is composed of conductive sponge material and is designed to make the image drum surface and the paper closely into contact Paper is placed over the image drum surface and a positive charge opposite in polarity to the toner is applied to the paper from its reverse side The application of a high positive voltage from the power supply to the transfer roller causes the pos
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20. 2 0 6 2 f 28 40371301 ROLLER Assy Hopping 1 2 6 12 29 40376401 GEAR Z388 1 1 6 30 16595 4PP3522 3568 ADF Bearing P001 32 40325401 GAR Z58 1 h B 6 33 4032501 GEAR 7422 1 1 B 6 34 4031791 Lever Paperend 1 6 35 40318001 __lLeverPapernearend 36 4 4120 1137 FX050 Photo Sensor P001 m Connection Code Wire PP oP FP To Paper Exit 38 40375302 Connection Code Wire 1 To Paper End 39 40337301 LEVER Sub roller caulking 1 0 3 ROuER LmkiSu e 41 40433701 jBracket Subroller Pressfiting 1 1 6 42 40358101 Plate Planet_ 1 0 B 6 f 43 40317701 GEAR Plaet z0 1 6 44 40367101 BRACKET Sprng Sun 1 0 6 f 45 40607301 SPRING Sub Roller 1 0 6 46 40313201 ROLLER Assy Feed 1 2 6 12 47 40371901 ___ SPRING Release 1 0 6 ff 40098001 PLATE PLATE Base 1 0 B 6 So Ji94801 Spacer Card KGPS 5RF Space Cand KGPSSAR 1 e E pz 3 Br 40288101 pian sa 52 40159901 Power Supply Unit AC DC 1 120 N 120V 2 40160001 Power Supply Unit AC DC 1 ODA 230V 230V OEL INT 2 53 40160301 Power Supply Unit High Voltage 1 2 5 10 4 54 40307301 BRACKET AC 1 0 jo Copyright 1997 Okidata Division of OKI America Inc rights reserved See the OKIDATA Business Partner Exchange BPX for any update
21. 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 bpx okidata com Page 47 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Pull out the case Assy Cassette 1 from the printer See 3 3 19 1 3 Release two locks and remove frame assy separation 2 At this time coil spring 3 is also remove Be careful not to lose this 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 bpx okidata com Page 48 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Open the stacker cover 2 Unlock the lock by lifting the TR gear 1 to remove the TR gear 1 and roller transfer 2 Note Don t place the removed roller transfer directly on the desk and so on When placing it lay a paper and the like under it 3 Remove right and left 2 bearings 3 from the frame main by sliding them inside while pushing them At this time 2 transfer springs R 4 would be detached simultaneously 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 P
22. ACt20V pr 230 See Fig 6 3 Mo fs ON2 connector connected to the Power Supply Unit amp C120V or 230VY Connect the CN2 connector to the Power Supply Unit 2 or 230 property Yes Pin 6 HEAT signal of tha POWER connector of the Mein board turned on In heater on state this pin is set to D V HBaplace the Main board Yes Aeplace the Power Supply Und Voltage YES Goto 8 5 VF time out between printer and optional tray ERROR 81 ERROR 82 Is tray 2444 Sra fray or anvelope Yas 5 fhe connection behween the Main board and the optional tray connected property See charter 7 1 No Connect ihe cable propery Yes Heplace the Main board 5 the printer recovered No Isolate the trouble by following the end 3rd tray or maintenance manual See appendix D or E YES M Replace the Main beard E time out between printer and Duplex Unit ERHOH 83 la an Duplax Unit used Yee lathe connection between the Main board and the Duplex Unit connected propery See chapter 7 1 the cable property Yee Heplace tha Main board ihe printer recovered lezate the trouble by following the Duplex Unit maintenance manual See appendix YES END Replace the Main board a VF time out occurs between the printer and the operator panel ERROR 8D s the c
23. All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 67 OKIDATA P n M Adjustment necessary when replacing one of the following parts Part Replaced Adjustment Image Drum Cartridge Reset the image drum counter Refer to User s Manual Reset the fuser counter Refer to Chapter 4 2 1 4 2 1 Resetting the fuser counter 4 2 2 Destination setting 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 OKIDATA Page 68 Service Manual OKIPAGE20 Chapter 4 Adjustment 1 The fuser counter can be reset in the engine maintenance mode 2 Resetting method Operation With the ENTER and FORM FEED keys pressed turn the printer power on Press the MENU key until FUSER COUNT RESET is displayed Press the ENTER key to reset the fuser count After the initializing process is completed the printer enters into the operation mode LCD Display ENG MNT 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 69 OKIDATA M E20 The desired destination can be set by turning the power on while depressing two keys corresponding to
24. Arm Cover Rear 3 3 7 Sensor Stacker Full 3 3 8 Cable cover guide film 3 3 9 Damper 3 3 10 Feeder Unit Front 3 3 11 Roller Assy Regist 3 3 12 Motor Main 3 3 13 Guide Assy Eject 3 3 14 Heat Assy 3 3 15 Roller feed C 3 3 16 Roller Assy Bk 3 3 17 Roller assy Feed 3 3 18 LED Head 3 3 19 Paper cassette ROLLER Assy Feed ROLLER Assy Hopping 3 3 20 Frame Assy Separation 3 3 21 Transfer Roller TR Gear TR Bearing 3 3 22 EP lock shaft 3 3 23 LEVER Assy Out Sensor 3 3 24 Toner sensor lever 3 3 25 Paper sensor lever 3 3 26 Inlet sensor lever 3 3 27 Power supply unit 3 3 28 Lever Paper end amp Lever Paper near end 3 3 29 Guide Assy Cassette L 3 3 30 Guide Assy Cassette R 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 28 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn off the AC Power Switch and unplug the AC Power Cord from the outlet 2 Disconnect the Interface Cable 1 3 Open the face up stacker assy 2 unhook the right and left projections and then remove the face up stacker assy 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 29
25. Functions 4 2 Adjustment When Replacing a Part 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 59 OKIDATA User maintenance mode System maintenance mode Engine maintenance mode 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 60 OKJDATA a To enter the user maintenance mode turn on the POWER switch while pressing the MENU key Function There are 13 functions as follows Menu reset Hex dump Drum counter reset Resource Save Second Third Front Tray Receive Buffer Size Operator panel menu disable X adjust Y adjust Duplex Adjust Select paper source command parameter Page placement Setting Cleaning cycle 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 OKJDATA a Note This mode is used only by service persons and it should not be released to the end users To enter the system maintenance mode turn on the POWER switch while pressing the RECOVER key Function There are 8 functions as follows Page count display Page count printing enable disable
26. Level Il program and its fonts BOARD MSM consists of Mask ROM BOARD FSL consists Flash ROM Mask ROM and Flash ROM is used as the program font ROM s 2 EEPROM The EEPROM has a 4 kbit capacity and stores the PostScript s menu settings 3 Emulation PostScript Level 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 24 i Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement This section explains the procedures for replacement of parts assemblies and units in the field Only the removal procedures are explained here Reverse the procedure for the installation 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 25 Ae Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Before starting to replace parts remove the AC cord and interface cable a Remove the AC cord in the following sequence i Turn off o the power switch of the printer li 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 Reconnect the printer in the following procedure i Connect the AC cord and interface cable to the printer li Connect the AC
27. Qverow Exception Besakpoint Exception 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 80 Service Manual 20 OKIDATA Chapter 6 Troubleshooting Procedures If troubles are not correctable from the LCD message trouble list follow the troubleshooting flowcharts given here to deal with them The printer does not work normally after being turned on Jam error Paper input jam 1st Tray Paper input jam Front feeder Paper feed jam Paper exit jam tal Fusing unit error Synchronous Serial VO error between the Main board and the Power Supply Unit High voltage LF time out between the printer and the operator panel VF time out response between the printer and an optional tray 2nd tray 3rd tray multi feeder Messages cannot be received through the parallel interface 8 9 Messages cannot be received through the serial interface 8 10 Data cannot be received through the OKI interface 11 VF time out between the printer and the Duplex unit Printing sequence error in the Duplex Note When replacing the Main board install the EEPROM from the old Main board onto the new Main board 1 The printer does not work normally after being turned on ls message shown in the LCD display for less than 1
28. See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 12 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description The power supply sensor board consists of an AC filter circuit a low voltage power supply circuit a high voltage power supply circuit heater drive circuit and photosensors 1 Low Voltage Power Supply Circuit This circuit generates the following voltages Output voltage Use Logic circuit supply voltage Motor and fan drive voltage and source voltage for high voltage supply Reset circuit RS232C Line voltage RS232C Line voltage LED head supply voltage 2 High Voltage Power Supply Circuit This circuit generates the following voltages necessary for electrophotographic process from 30 V according to the control sequence from the main control board When cover open state is detected 30 V supply is automatically interrupted to stop the supply of all high voltage outputs Output Voltage Use Remarks Sub CH 15 Microline Voltage applied to Sub charging roller 7 CH 1 3 Voltage applied to charging roller DB 220 300 Voltageappliedto developingroller SB 45 7 jVoltageappliedtotonersupplyroller CB 450 V 1350V_ Voltage applied to cleaningroller 3 Photosensor The photosensor mounted on this power supply sensor board monitors the status of paper being fed through the prin
29. customer as possible 3 Perform inspections in conditions close to those in which the problem had 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 bpx okidata com Page 75 DATA Service Manual OKIPAGE20 Chapter 6 Troubleshooting Procedures 1 Is the printer being run in proper ambient conditions 2 Have the supplies toner and the routine replacement part image drum cartridge been replaced properly 3 Is the paper normal See paper specifications section 4 Has the image drum cartridge been loaded 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 bpx okidata com Page 76 DATA Service Manual OKIPAGE20 Chapter 6 Troubleshooting Procedures 1 Do not touch or bring foreign matter into contact with the surface of the image drum 2 Do not expose the image drum to direct sunlight 3 Keep hands off the fuser unit as it is heated during operation 4 Do not expose the image drum to light for longer than 5 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 bpx okidata com Page 77 Servi
30. drum without being transferred is made uniform by the cleaning roller and is temporarily attracted to the cleaning roller by static electricity 6 Fusing The toner image transferred to the paper is fused under heat and pressure Figure 2 6 shows an electro photographic process timing chart T 7 M Lo ono x La Fr z 8 3 z L 8 Eu dear Fs igi Figure 2 5 DMON N MOTOR cer Deu HMON N JHOPE NG MOTOR OFF PWATT P CLOUGH tor hopping ON Mun PWME P for REGISTRATION ees PEINI N IRLETSENSCE gro l rj i WHSENSE N PAPER SENSOR 0 ld PSOUT M OUTLET SENSOA STB N HEADS PAPER SIMPLEX PHINTIBCG TIMING CHAH Figure 2 6 DAEN DAUM MOTOR OFF HORN HOPPING MOTOR E ON SAA P CLCH fot b opping DOFF for REGSTAATION SH _ F PSIN1 M INLETSENSOR ur 1 1 A gc i APSENSE M PAPER SENSOA ON 1 PSDUT N OUTLET SENSOR m 1 STEN LED HEADY i CUPMONN MAIN MOTOR in DUPLEX LIMITY CLON P CL LACH in DUPLEX UNIT E SLON SOLENOID in DUPLEX UNIT 5 SENSOR in DUPLEX DUPASNS H BEAR SENSOR EE DUPFE
31. http bpx okidata com Page 94 OKIDATA Duplex Unit This Handbook is intended for the service personnel and describes the field maintenance methods for the Duplex Unit option of the OKIPAGE20 Series Page Printer Refer to the USER S MANUAL for operating instructions 1 1 Functions 1 2 External View and Component Names 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 95 Service Manual OKIPAGE20 OKIDATA Chapter C Duplex Unit DUPLEX UNIT is a unit which is installed on the printer unit for controlling both sided printing from the printer unit intended for automatically reversing papers of which one side have been already printed and re feeding them to the unit for printing other side The main functions are the followings e Paper that be used Paper Type e Cut Sheet Size A4 Letter Executive Legal13 Legal14 e Special Size Paper Width 210 to 216mm Paper length 279 to 356mm Weight e 16105 24165 64 81 g 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 bpx okidata com Page 96 OKIDATA aiii er Unit Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Excha
32. inlet plug to the AC receptacle iii X Turn on 1 the power switch of the printer Discennact Connact 2 Do not try disassembly as long as the printer is operating normally 3 Do not remove unnecessary parts try to keep the disassembly to a minimum 4 Use specified service tools 5 When disassembling follow the determined sequence Otherwise parts may be damaged 6 Since screws collars and other small parts are likely to be lost they should temporarily be attached to the original positions 7 When handling IC s such as microprocessors ROM and RAM and circuit boards do not wear gloves that are likely to generate static electricity 8 Do not place printed circuit boards directly on the equipment or floor Service Tools The tools required for field replacement of printed circuit boards assemblies and units are listed in Table 1 300 Philips screuwdrear 2 2XX Philips Magnetizec 5 208 acreana LED Head cleaner FIN 4PS4Q83 2248P1 LED haad Discannect Jaci ennnectar Discannactar for Jack in connector 4PPAQT6 5385P1 Far removing Hoider TR Eject FROCLER Trensfer EN 4050601 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 26 OKID ATA Service Manual OK
33. is released If this amor occurs frequanthy ses chapter 6 5 2 LCD salus message Trouble or tatus Daily statis NITEHTICH DApLEX CHAUT TAP FAHI PLEX FEED THE PAPERE FELD ARI VE THE PAPER i FAK THE PAPERA TAPER IMAM JAM CHECKE mim thal in bedig papers from tray n to fe Duplin unit a jam in the separator or Duplex uni by monilaning OUTSNS ON DUP ISHS ON Tray n Tray t Tray2 Tray Front Muti Feeder informa that in feeding papers form n tray to the Duplex unit in the separata Duplex uril by maniloning INSINS OM CUP INSNS OFF Informs that in feeding papers Inom n trey to a Duplex uni a pccurs when a paper reversed te the reverse radar of the Duptex unit by meniteeng MOTOR Duplexi ON OUP RSS ON Informs that in feeding papers from n tray te fhe Duplex unit a jam woun when a paper zs impinge sed in a Duplex und by monionng DUP A Shes ON SNS ON Jam which pepum n deeding papers the Quotes wise The first tray casseta pull out m naper remainirs state Structuraly No first tray cassava wil causa no reversa moot for papers and open the Duplex cover Gownerards thal jam dunng paper running after exiting from the ray Pierove a el Ihe paper rm the pen the cover Pen dose lo peor recovery panting and ds amar d
34. o b e 1 4PP4076 5308 Bearing 1 3 Sie Bg e 41 40371501 GEARAssy Clutch Z50 lB 6 tse 43 4031301 ROLLER Assy Feed s e 12 120371601 6 Assy Cuh a EE PO1 loon em EPP P001 47 40301001 ROLLERASSY BK 3 6 48 40316101 GEAR Idle EA ro b 49 40316201 GEAR Idle EB 2 o je 12 4 50 40302501 LEVER BackupTdeae 51 40300501 A4 1200 1 2 0 0 40300500 _ JHEAT Assy A42300 1 2 10 0 52 40306401 LAMP Halogen 750W 120V_ 2 5 10 ff 40306402 LAMP Halogen750W230 V 1 2 5 10 53 40307401 1 1 8 6 _ 4PP4076 5191 Damper Arm Caulking G001 E 40587001 Stacker Assy For Maintenance 1b k ep 4PP4128 1164 HEAD Spring P001 57 140365401 GE Stack Full 1 2 5 10 58 40409201 eee ME ES M 59 40409301 Fin Fim FG 2PP4128 1096 ooo Cover P001 uM 40450501 HEAD Cable Assy m 5 m g 4PP4076 5009 Washer P001 ul PPP P P001 64 4037201 PLATE FG F 1 0 B 6 pf 65 40443301 Unit FRONT 1 0 3 6 pf 66 4054721 LED Head 1 2 Ho 0 f Em ZCAT1325 0530A R CORE PP PP PO 01 4PP4043 4489 Bearing 1 3 P001 Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx oki
35. occur 10 seconds laser sree powering on 27 Inthe event that il takas 3 seconds or mora tor shifting 1 the operating mode or a command for operating mods i5 during gamer on mode 22 anor between OKI HSP hast Informs thal thee upper cover apen Indicates that an error poolis trom Fa nesulls ol giing ID Na of EEPROM the operalion continuer EEPROM fo laciany pes jt afer a lira meon the cover remove the paper fen close the cover Wher cover amp recovery printing is and Sea girar 15 released If the emar occur frequently see chapter 6 6 2 Coan the cover remos tha paper fan close the cover her fie covers ckased recovery printing ts and te display is released If the emar cours frequently see chapter 8 5 2 Press FEWIOOVER key If the frequantly check card Close the cover to loe eret display IE the display dees nat change alte the comers closed check fer cameti operation of eer aperdawile and laver Replace the Power Suppi Uret High Wokage It displays the message for a few seconds reset the EEPROM to the factory default state continue operalian When the progres is updated and the EEPROM neplaced with rew one he menu dubai corres ponding to each destination will loaded Category LCD READY amp rrEHTION Trouble or status Hemady massage LED L
36. okidata com Page 122 Service Manual OKIPAGE20 b OKIDATA Chapter D Second Third Paper Feeder This high capacity second third paper feeder which is located under the printer rotates the hopping motor according to the signal from the printer to supply papers to the printer automatically The main functions are as followings e Applicable media Paper Type e Cut Sheet Size A4 A5 B5 Letter Executive Legal13 Legal14 e Special Size Paper Width 148 to 216mm Paper length 210 to 356mm Weight e 60 105g m e Paper loading capacity 75 g m paper 530 sheets 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 123 Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder 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 124 Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 2 1 Driving Mechanism 2 2 Hopper Mechanism Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 125 DATA Service Manual OKIPAGE20 PE Chapter D Second Third Pape
37. the sensor lever and the magnet on the stirring bar Operation during toner full state e The stirring bar rotates due to the Sring Gear Section interlocking with the stirring gear e Even when the magnet on the stirring bar reaches the maximum height since the other side is being dipped in the toner the stirring bar is pushed by the stirring gear Bar Sere Lear Tanger Sansor Operation during Toner Low State e When the stirring bar reaches the maximum height since there is no resistance provided by the toner on the other side it falls to the minimum height due to its own weight Because of this the time interval during which it is in encounter with the magnet of the sensor lever becomes long By monitoring this time interval toner low can be detected emg Bar Senoi Laver TONER FULL state TNASNS 2 TaT SEG TONER LOW state TNRSNS dq p d T A HH 27274 2 727 SEC e When the toner low state is detected 2 times consecutively Toner Low is established When the toner full state is detected 2 times consecutively Toner Low is canceled e When there is no change with the toner sensor for 2 cycles 2 77 sec x 2 or more then the Toner Sensor Alarm is activated e The toner sensor is not monitored while the drum motor is in a halt Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for an
38. the procedure and do not disassemble any more than necessary 4 Only specified service tools may be used 5 Disassembly must be carried out according to the prescribed procedures Parts may be damaged if such procedures are not followed 6 Small parts such as screws and collars can easily be lost therefore these parts should be temporarily fixed in the original location 7 When handling printed circuit boards do not use any glove which may generate static electricity 8 Do not place the printed circuit boards directly on the equipment or floor Table 3 1 Service Tools Tools E ty Place of use 1 100 Philips screwdriver 2 2 rm senes i RES No 2 100 Philips scrawdrnvar 4 5 mm screws No 3 100 screwdrivgr 0 5 200 Ux _ T 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 OKI P N 407 Page 103 OKIDATA D Unit This section describes the layout of the main components 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 104 OKIDATA Duplex Unit This section describes the parts replacement methods for the components listed
39. until the Inlet Sensor turns off 2 Aligning After turning on the Inlet Sensor the paper fed by a predetermined length and choked up to the wedge space formed by the Regist Roller and the Pressure Roller so that to align the skew of paper 3 During the paper fed from the 1st tray the build in clutch of Gear C is idled and not to drive the Front Hopping Roller 4 Feeding After aligned the paper the Hopping Motor turned off and stop hopping Also the Clutch Feed turned off and the Align Roller idled freely Then Clutch Regist turned on and the Regist Roller start to feed the paper After the paper fed the 1st Hopping Roller is freely idled by releasing build in one way clutch also the Sub Roller is freely idled by escaping the Planet Gear 5 Start printing after the paper turns off the Write Sensor Inlet Sensors Pressure Roller ETE b Gear E ri EM Regist Roller Clutch Hegist 4 x 2 a 7 T 22 m Clutch Feed i Gear D T Main Motor Align Roller b Hopping from the Front Feeder 1 Hopping The Front Feeder Plate is normally locked at the lower position by the Release Lever and turn the Micro SW on Top of the FF Cam which attached on end of the Front Hopping Shaft is normally located Upper position 0 to 30 degree home position Rotating the Hopping Motor in direction b CCW drives the Front Hopping Shaft and then attac
40. warming up at power on time e In warming up after the cover is opened and closed e When the number of accumulated sheets is 10 or more and the printout operation ends Changes in bias voltage applied to each roller move adhesive toner from the roller to the image drum and return it to the developer 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 17 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description An LED correcting head which is capable of correcting the illumination of the LED for each dot is being used in this printer LED illumination correction function of 16 steps is carried out by using an EEPROM which is installed in the LSI that maintains the LED illumination correction values and an LED correction drivers together as a pair The LED correcting head consists of the correction control LSI LED drivers and an LED array The block diagram of the LED correcting head is shown below Carraction Coeitral STRBA N STRES N CLOCK The LED correcting head is 600 dpi head with the LED drivers located on both sides of the LED array with a 300 dpi pitch spacing The printing and correction data obtained from the CPU through four signal lines are sent to the LED array In the OKIPAGE 20 Series Printer the correction control of LED head is executed by CPU
41. 1 1 B 6 27 40340301 PULEY MXLOBD 2 6 2 28 40448101 Mini Pitch Belt 1 1 B 6 29 40382001 ROLLER Feed RV 1 1 6 4PP4076 5345 Bearing L gb 4PP3527 5355 FX30 Bearing a pe 32 40339801 GEAR 74888 1 1 5 Janssesor LEVER 34 40386501 SPRING Sensor F R 2 jp 6 12 35 140375301 Connection Code Wire 1 1 3 To Front Sensor 36 40483401 SOLENOIDAssy 1 1 B 6 37 4039501 1 1 B 6 pf 38 40382601 PPLATE Eath F ID 1 1 6 pf 39 40322901 PLATE Earth F R 2 1 1 6 40 40382801 PLATE Earth BTM 1 1 6 41 225 2 p 6 2 f 42 JRE SK ERng 1 6 43 40339101 LEVER Lock DUP 2 2 6 2 f 44 40338601 LEVER ReleaseeDUP 2 2 6 12 45 40393701 SPRING Support 2 2 6 12 48 40318201 COVER Bottom DUP 1 6 49 40382701 Earth MTR 11 B 6 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 121 Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 1 1 Functions 1 2 Appearance and Parts Name 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
42. 10 Setting of High Capacity Second Paper Feeder paper feed length e This function sets the paper feed length of the High Capacity Second Paper Feeder 11 Selection of High Capacity Second Paper Feeder download table e This function selects the download table for the High Capacity Second Paper Feeder 12 Setting of High Capacity Third Paper Feeder paper feed length e This function sets the paper feed length of the High capacity Third paper feeder 13 Selection of High Capacity Third paper feeder download table e This function selects the download table for the High capacity third paper feeder 14 Setting of Multi Feeder paper feed length e This function sets the paper feed length of the Multi Feeder 15 Selection of Multi Feeder download table e This function selects the download table for the Multi Feeder 16 Setting of duplex feed length e This function sets the paper feed length of the duplex 17 Fuser count display e Displays on the LCD the total number of printed pages counted at the engine 18 Fuser count reset e When the fuser unit is replaced the maintenance person uses this fuser count reset function to reset the fuser lifetime e After the fuser counter is reset the engine enters into the operation mode automatically 19 Engine reset e All EEPROM areas used by the engine are reset to the factory default values e following items are excluded Menu level 1 Menu level 2 Operator panel
43. 15 the operator panel connected to the Main board properly No Connect the operator panel properly Yes Is the connecting cord defective Yes Replace the connecting cord Mo Replace the operator panel assembly Is the printer recovered Replace the Main board YES END Yes 18 INITIALIZING message shown in the LCD display Replace the Main board YES ONLINE message shown in the LCD display AKAA No Take the proper action following the message shown in the LCD display For details see the chapter 6 5 1 LCD STATUS message trouble list YES END LI PPP PEP PPE IW Y PEPE Pe Shad th id thd the tht ht thd thd thi tht POWER CONNECTOR Main control board BOARD AAA Fig 6 1 Connector and Pin Location aW INLET Measurement by a Multimeter Fig 6 2 Fig 6 3 Connector and Pin Location JAM error 2 1 Paper input jam 1st tray Does a jam error occur when the power is fumed on No Yes 15 paper at the inlet sensor lever Yeas Hemowe the paper Does the inlet sensor lever operata smoothly No Replace the sensor lever Yes Clean the inlet sensor 1 on the Power Supply Unit High Voltage or replace the Power Supply Unit High Vottage See Fig 2 3 Sensor Layout Diagram Doss jam eror occur after paper Teeding Yes paper fed on the intet sensor laver Yeas Does the inl
44. 5 Move the belt to the right and remove it from the one way pulley 6 6 Move the carrier roller assembly to the right and remove it from the shaft 7 7 Move the roller A 8 to the right lift its left side and then pull it off to the left Be careful not to lose the shaft 7 being removed together 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 169 OKIDATA HL 1 Remove the roller A see 3 3 7 2 Remove the bearing 1 and remove the feed roller assy 2 3 Remove two bearings 3 and remove the plate 4 4 Remove the mini pitch belt 5 and the feed roller 6 Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 170 OKIDATA Servie papier E Precautions Prior to the Troubleshooting Preparations for the Troubleshooting Troubleshooting Method 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 171 OKIDATA Servie papier E 1 Go through the basic checking items provided in the Operator Guide 2 Obtain detailed information concerning the p
45. ATA STROBE and INPUT PRIME DATA STROBE aaka ton 58 INPUT PRIME add pF DATA BIT 1 ta B Ras3 3KC0 H3 5374 or equivalent b Sending circuit HIY 2 3 42 r4 equivalent Open collectar 6 Timing charts e Compatible mode a Data receiving timing PARALLEL DATA DATA 110 B OLS DE rn DATA STOROBE min BUSY ACKMHOWLEDGE b On line gt off line switching timing by ON LINE SW ON LINE SW TUO mis nas c Off line gt on line switching timing by ON LINE SW ON LINE SW BUSY SELECT ACKNOWLEDGE ja In 10 ua d INPUT PRIME timing when set to the effective INPUT PRIME signal gb us mm INPUT BUSY SELECT ACKNOWLEDGE tt ps mag 0 5 gsto 12 e Nibble Mode Conforms to IEEE 1284 spec e ECP Mode Conforms to IEEE 1284 spec 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 93 DATA Service Manual OKIPAGE20 Chapter B RS 232C Serial Interface 1 Connector e Printer side 25 pin receptacle Type 17LE 13250 27 D4CC made by DDK or equivalent e Cable side 25 pin plug Type 17JE 23250 02 D8C made by DDK Note Plug shall be able to be fixed with a lock screw 2 Cable e Cable length 6 ft 1 8m max Cable shall be shielded N
46. Do not touch image drum LED lens array and LED head connector 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 bpx okidata com Page 72 OKIDATA Service Manual OKIPAGE20 Chapter 5 Periodic Maintenance Clean the LED lens array or replace the toner cartridge when white lines or stripes void light printing are generated vertically down the page Note The LED lens array must be cleaned with an LED head cleaner White lines or stripes void light 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 bpx okidata com Page 73 Service Manual OKIPAGE20 OKIDATA Chapter 5 Periodic Maintenance 1 Open the stacker assy and remove 1 0 unit 2 After cleaning LED head wipe off the paper powder by LED LENS CLEANER and remove the paper powder 4 C IB 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 74 Service Manual OKIPAGE20 OKIDATA Chapter 6 Troubleshooting Procedures 1 Check the basic check points covered in the user s manual 2 Gather as much information on the problem from the
47. ED 0 i j Flash i FARIA Light off A fault occured in the printer Tum poser alf then on to iesse tha erar delar fa amar apay cannot be released by this procedure cael person Samed An error was detected te program hash check Raplase the program Location BOARD AAA ICE Replace the Main beard SOARD AAA ote When ragiacing the board install fe EEPROM mounted an the replaced Main board error was Geteched iy feeit loreal check Replace the font Location BOIARD AAA ICE CB Haplaoe ite Main board BIMAL AAA Rote When replacing the board fhe EEPROM mounted an the Mar board An error wat detected by restent check Heplase the Main beard Mota When replacing the Main board install tha EEPROM mounted an the Main An error was detected m EEPROM check Replace the EEPROM Lacation 019 Replace the Main beard BOARD AAA An error was detected oy oaatenal sottware HOM Aeplase tha PostSoret module EOARD MSM BOARD FBL I An eor was detached RAM check Check optional for proper connection Raplace the optional RAM A occurred in the fan Gennect the fan cable property Replace the lan moin Power Sunny Unit 2300 RN inn A faut occured in the fuser Sea chanter 5 5 2 Themn
48. IDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 136 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder 1 Remove the Motor See section 3 3 5 2 Unscrew two screws 1 to remove Connector IMSA 9714N 14B 2 and Plate Earth FR 3 3 Unscrew two screws 4 to remove the connector IMSA 9714N 14A 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 bpx okidata com Page 137 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder 1 Remove the Motor See section 3 3 5 2 Remove the Connector See section 3 3 6 3 Unscrew two screws 1 to remove the motor bracket 2 At this time the Mini pitch belt 3 and Gear double 4 can be removed simultaneously 4 Disengage latchs to remove the Frange pulley 5 and pulley ldle 6 5 Unscrew a screw 7 to remove the Plate Earth shaft 8 6 Unscrew a screw 9 to remove the Tray switch assy 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 bpx okidata com Page 138 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder 1 Remove the Motor See section 3 3 5 2 Remove the Con
49. IPAGE20 Chapter 3 Parts Replacement FATE Bohim 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 27 are AUF A Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement This section explains how to change parts and assemblies appearing in the disassembly diagram below Primer Face up Stacker Assy Contact Assy OP Panel Assy Paper Cassette ROLLER Ase Feed By Rolls TR TR Baacing 33 1 333 33 3 HEAT Assy 33 14 Roller Assy BX EERI 1334 Board AAA 33 5 Stacker Assy Damper Arm Sensor Stacker 327 Cover 3 38 Cabin Cover 1338 FmederUni From 33 9 Ficller 13 11 Camper 33 13 3 18 Frame Assy Saparation 33 20 LED Haad 33 18 Moinr Main 3 3 12 Guide kaia 3 3 13 Feed 3315 13 21 Roller Aasy Fead 23 17 EP Lock 31322 Laver Asgy Ont Sensor 3 3 22 Tone Sansa Lever 2 2 204 Pape 3 3 25 inet Sensor Lever 1326 Power Supply Unt 3 3 27 Laver Paparemd amp 1328 E Guile Assy Cassetil 3 3 28 Assy CassetieF 3 3 90 3 3 1 Face up Stacker Assy 3 3 2 Contact Assy 3 3 3 DC Fan Motor 3 3 4 OP Panel Assy 3 3 5 Board AAA 3 3 6 Stacker Assy Damper
50. IPAGE20 1 Remove the upper cover see 3 3 1 1 to 3 2 Remove the AOLE PCB see 3 3 2 3 Remove two screws 1 then remove the motor bracket assy 2 and the planet gear 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BP X for any updates to this material http bpx okidata com Page 167 OKIDATA HC 1 Remove the upper cover see 3 3 1 1 to 3 2 Disengage the plate and frame on both sides 3 Remove the separator assy see 3 3 1 4 to 5 4 Remove the AOLE PCB see 3 3 2 b Remove the motor bracket assy see 3 3 5 6 Remove the gear 1 7 Shift the roller B 2 to the right lift it by holding on its left side and pull it out to the left side The bearing 3 also comes off at the same time so be careful not to lose it Further pay special attention to make sure that you do not damage the sensor lever 4 while going through this procedure Engaging tecor Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 168 OKIDATA HC 1 Remove the motor bracket assy see 3 3 5 2 Remove two gears 1 and then another gear 2 3 Disengage the plate 3 and the frame 4 4 Remove four screws 5 and remove the frame 4 see 3 3 6
51. LED stationary head Type e Standard paper Xerox 4200 20 Ibs e Application paper manual face up feed Label Envelope OHP paper transparency Size e Standard sizes Letter Legal Legal 13 Executive COM 10 Monarch B5 JIS A6 e Applicable sizes Width 3 4 to 8 5 86 to 216 mm Length 5 5 to 14 140 to 355 6 mm Thickness Automatic feed 16 to 28 Ibs 60 to 105 g m Manual feed label OHP paper transparency Envelope 16 36 Ib 6 Printing speed First print 8 sec Continuous printing 20 sheets min at duplex print 10 sheet min Warm up time 90 seconds at room temperature 77 25 and rated voltage 120 VAC 7 Paper feeding method Automatic feed or manual feed 8 Paper delivery method Face down face up 9 Resolution 600 x 600 dots inch 600 x 1200 dots inch 10 Power input 120 VAC 5 5 15 ODA 230V 10 11 Power consumption Peak Approx 820W Typical Approx 350W Idle Approx 95W Power save mode Approx 25W 12 Temperature and humidity __ Power off mode During Storage Unit Temperature 50 90 32 110 14 110 F 10 32 0 43 10 43 C 10 90 Dem 90 Maximum wet bulb 77 9 4 temperature 25 9 8 Minimum y y 4 difference between wet and dry bulb temperature Notes 1 Storage conditions specified above apply to printers in packed condition 2 T
52. NE N FRONT SENSOR in ORIPLEX WRITS PAPE PAP PRINTER PRIMER LET STACK ic PAPER PRINTER PLEX LAIT STACKER DUPLEX PRINTING TIMING GHARAT Figure 2 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 bpx okidata com Page 16 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description 1 Hopping Hoppings from the first tray and the front feeder are effected by a single hopping motor in the mechanism shown below Happing Motor Im Tu TI A2 L Frani Feedar 151 Tray Turning the Hopping motor in direction a CW drives the 1st Hopping Roller Turning the Hopping motor in direction b CCW drives the Front Hopping Roller Gear C and Hopping roller build in one way bearing so that turning each of these gears in reverse direction will not be transmitted to the corresponding roller Gaar C Hoppe Matar Orea way Chuteh build in 1 Paper Tsi Hopping Haller One way clutch build lt n a Hopping from the 1st Tray 1 Hopping Rotating the Hopping Motor in direction a CW drives the 1st Hopping Roller and the Sub Roller then pick up a sheet of paper in the 1st tray The Main Motor is always driven in direction c CCW on printing After the paper fed approx 30mm from the tray the Clutch Feed drives the Align Roller to advance the paper
53. OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the operator panel assy and cover side I F See 3 3 4 2 Unscrew 2 screws 1 and remove the cover side 2 3 Unscrew 2 screws 3 and remove plate shield 4 4 Unscrew 3 screws 5 and 2 screws 6 unplug all the connectors 7 and remove Board AAA 8 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 33 Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the face up stacker assy See 3 3 1 2 Remove the cover side L See 3 3 2 1 3 Remove the OP panel assy See 3 3 4 4 Remove the Board AAA See 3 3 5 5 Loosen 2 screws unlock the both sides latches and remove the cover rear A 6 Unscrew 2 screws 1 and cover frame 2 7 Unscrew screws 3 and remove the plate assy side 4 8 Remove the lever back up release 5 and unlock the engagement of the projection on the right side of gear at the right side of stacker cover 9 Remove a screw 6 and washer 7 and then remove the stacker assy 8 At this time the damper arm 9 can also be detached simultaneously 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
54. 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 140 rA Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 1 Remove the Frame side L assy See section 3 3 5 2 Remove the Plate Earth BL 1 3 Take away the Spring 2 to remove the Cassette stopper 3 4 Take away the Spring sheet 4 to remove the Pull block 5 At this time Lever link 6 can be removed simultaneously 5 Unscrew a screw 7 to remove the Link support 8 6 Remove the Roller link 9 7 Remove two Rubber foot 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 141 A Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 1 Remove the Frame side R assy See section 3 3 5 2 Remove the Plate Earth BR 1 3 Take away the Spring 2 to remove the Cassette stopper 3 4 Take away the Spring sheet 4 to remove the Pull block 5 At this time Lever link 6 can be removed simultaneously 5 Unscrew a screw 7 to remove the Link support 8 6 Remove the Roller link 9 7 Remove the Plate earth 10 8 Unscrew a screw 11 to remove the Detector spring 12 9 Unscrew a screw 13 to rem
55. Page 1 Service Manual OKIPAGE20 Chapter 0 Introduction OKIDATA Service Guide OKIPAGE 20 OKIPAGE 20 DX OKIPAGE 20 DXn LED PAGE PRINTER PRODUCTS Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual 03 20 98 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 display well on most displays 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 Table of Contents Page Service Manual OKIPAGE20 0 Introduction Copyright 1 Preface 2 1 Configuration 1 1 System Configuration 3 1 2 Printer Configuration 4 1 3 Optional Configuration 5 1 4 Specification 6 1 5 Safety Standards 7 1 5 1 Certification Label 8 1 5 2 Warning label 9 2 Operation Description 2 0 Operation Description 10 2 1 Main Control Board BOARD AAA 11 2 2 Power Supply Unit 12 2 3 Electro photographic Process 13 2 9 1 Electro photographic process mechanism 14 2 9 2 Electro photographic process 15 2 3 3 Process operation descriptions 16 2 9 4 Revision of LED Head Illumination 17 2 4 Paper Jam Detection 18 2 5 Cover Open 19 2 6 Toner Low Detection 20 2 Stacker full Detection 21 2 8 Paper Size Detection 22 2 9 PostScript ROM module BOARD MSM or BOARD FSL 23
56. Page 34 rA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the Stacker assy See 3 3 6 3 Remove four screws 1 Remove stacker mount 2 by releasing the tabs at position 2A 4 Remove Sensor stacker full 3 by releasing spreading the plastic tabs on each side of sensor Assy 3 and lifting switch from cover 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 35 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the stacker Assy See 3 3 6 3 Unscrew 2 screws 1 release tabs at portion 1A Remove cable cover 2 guide film 3 Note Use care when replacing cable cover Do not pitch crimp or cut cables or protective sheet Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BP X for any updates to this material http bpx okidata com Page 36 te Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the damper arm See 3 3 6 2 Unscrew 2 screws 1 and remove the two damper 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserve
57. Rolling ASCII continuous printing RS232C LOOP TEST EEPROM reset HSP ERROR recovery HSP ERROR count display HSP ERROR count reset SIDM enable 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 62 OKIDATA a Note This mode is used only by service persons and it should not be released to the end users To enter the engine maintenance mode turn on the POWER switch while pressing the FORM FEED key and ENTER key Function There are 19 functions as follows Head type setting Head drive time setting Head drive time setting at Auto head type Head strobe time at 600 x 1200 dpi Printing start position setting Drum counter total display Drum count display Setting of standard paper feed length Setting of front feeder paper feed length Setting of second tray paper feed length Selection of second tray feeder download table Setting of third tray paper feed length Selection of third tray feed download table Setting of Multi purpose feeder paper feed length Selection of Multi purpose feeder download table Setting of duplex feed length Fuser count indication Fuser count reset Engine reset 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 co
58. T AC 2 4 Unscrew 10 screws 3 and remove the connector 6 remove the Power supply unit AC DC 120 230V 4 and Power supply unit High voltage 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 bpx okidata com Page 55 rA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the frame main See 3 3 12 7 3 Remove screw 1 and then remove the PLATE Base 2 4 Remove two Spacer Cord KGPS 5RF 4 and then remove FILM Insulation 4 5 Remove four screws 5 and then remove the FRAME ASS Hopping 6 6 Remove the GEAR Z58 9 and GEAR Z42 8 At this time the ADF Bearing 10 can also be detached simultaneously 7 Remove the GEAR Z38 14 ADF Bearing 15 ROLLER Guide 16 and SHAFT Hopping 17 and Bracket Sub roller 28 At this time the Kock Pin 18 can also be detached simultaneously 8 Remove two screws 7 and then remove the SPRING Release 11 and then remove the LEVER Sub roller 12 and PLATE Hopping 13 9 Remove the GEAR Planet Z28 19 Plate Planet 20 BRACKET Spring Sub 21 and SPRING Sub ROLLER 22 10 Press the clamp part of Lever Paper end 23 and Lever Paper near end 24 Remove the Lever Paper end 23 and Lever Paper near end 24 by pushing it
59. The procedure is as follows 1 LED head is set to the correction control read mode and all correction data stored in EEPROM within the correction control LSI are read by CPU and stored temporarily in the memory 2 Next LED head is set to the correction control direct mode and the correction data stored temporarily in the memory is transferred directly to the LED driver 1 Read of correction data Wada softies 4 I HD Rode s RD exabled 2 Transfer of correction data to head driver correction data F E ome Mode sel RELI Meb The LED driver corrects the LED illumination by controlling the LED current The LED illumination can be set in 16 steps with 7 steps in the direction of illumination increase in relation to the standard value and 8 steps in the direction of decrease For this reason the LED correction data is a 4 bit data for each dot The relationship between the LED correction data and LED current correction steps with the LED driver used in an LED head is shown below Correction Correction 52 bi 35500 Mode Correction 0 1 O 1 10 Jjbyincreasing 0 1 O0 EE 2 888 0 0 0 O 0 JNocorecion _1_ 1 1 1 9 Correction by de
60. Turn the printer power off and remove the Multi Feeder 2 Disengage the link and hopper cover 3 Remove two screws 1 disengage two locks of the upper cover 2 using a flat head screwdriver and remove the upper cover 2 4 Remove two pan head screws 3 and remove the cover frame 4 5 Disengage the plate and the frame Refer to 3 3 6 6 Remove two screws 5 and remove the separator assy 6 7 Lift the paper stay 7 and disengage it from the separator bracket 8 then remove the separator 9 The spring 10 comes off at the same time so be careful not to lose it Pleasure soaring Check at the time of assembly When the secondary stage of idle gear 11 is turned in the A direction after engaging the plate and the frame the inclination of the pressure roller 12 is less than 0 1 mm against the plate 13 as shown in the right figure When the inclination of the pressure roller exceeds 0 1 mm fine adjust it by pressing with fingers as shown in the left figure with the pressure spring roller installed 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 163 OKIDATA HL 1 Remove the upper cover see 3 1 1 1 to 3 2 Remove two screws 1 and remove the AOLE PCB 2 3 Remove the connector 3 4 Remove the connector 4 Ca
61. Uri High Voltage and Shalt of Harste roller propesly Yes Am the contact of the devalopang mier and the contact of te tones suppey roic al Hye riage drum caetrideae contacted wilh tha contact assembly propel See Figura amp 5 A ane Mo Adustithir contacts of fe devaloping and tomer supply rallar to contaci the assembly preparty Yes Henplace the bansler roles See 3 36 Has bron gerer Erd Replace tha image drum cartridge Hae me route Dean remcved a Yes End Alar raplacing the Frage drum carndge sot tho peinger usor node ty luring fhe power on while pressing The key and reset the drum counter Paber to User s Replace the Main board Power Supply Une High Voltage Dark background density Has fe mage drum baen exposed axtemal light Yes Mound the image drum in the ginie and walt for about 30 minutes Ig tha heat roller pf tho using ura dirty Yee Clean the beat roller Mo the conted of the cleaning roller ol the image drum cartridge contacted with amp contac assembly propedly See Figure 6 6 s the contact of the cleaning maler te contact the contact assembly proo any Yes Replace the image chum carindge Has tie Towle been Yee End Altar raplacing the image drum castidge the prinber the user maintenance mode by turning the power on whia pr
62. age 49 Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove Frame Main See 3 3 12 7 3 Remove screw 1 Turn EP lock lever L Assy 2 in the direction of arrow 4 Remove spring 3 5 Drop EP lock shaft 4 down and turn in the direction of arrows B and remove it 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 50 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the frame main See 3 3 12 7 3 Press the clamp part of LEVER Assy Out Sensor 1 Remove the LEVER Assy Out Sensor 1 by pushing it upward from the lower side 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 51 Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the frame main See 3 3 12 7 3 Squeeze the clamp part of toner sensor lever 1 and remove the toner sensor lever 1 by pushing it upward from the lower side t Copy
63. age formed by the LED head 2 Hopping motor This motor is a pulse motor of 48 steps rotation that is two phase excited by the signal from the control board It drives the hopping roller of the first tray and the front feed roller via two one way clutches according to the direction of rotation 3 Motor Main This motor is a pulse motor of 72 steps rotation that is two phase excited by the signal from the control board and is the main motor of this mechanism 4 Clutch for Roller Regist 5 Clutch for Feed Roller 6 LED head Image data for each dot line from the control board is received by the shift register and latch register The 4992 LEDs are driven to radiate the image data to the image drum 7 Fuser The fuser consists of a heater a heat roller a thermistor and a thermostat An AC voltage from the power supply board is applied to the heater under the control of the HEATON signal from the control board This AC voltage heats the heater The control board supervises the heat roller temperature via the thermistor and regulates the heater roller at a predetermined temperature 185 C Normal paper MEDIA TYPE MEDIUM by connecting or disconnecting the AC voltage supply to the heater If the heater roller temperature rises abnormally the thermostat of the heater voltage supply circuit is activated to cut the AC voltage supply forcibly Copyright 1997 Okidata Division of OKI America Inc All rights reserved See
64. ain detailed information concerning the problem from the user 3 Go through the checking in the conditions similar to that in which the problem 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 bpx okidata com Page 112 OKIDATA Duplex Unit 1 Display on the Operator panel The status of the problem is displayed on the LCD Liquid Crystal Display on the Operator panel Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD 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 113 OKIDATA Duplex Unit When a problem occurs go through the troubleshooting according to the following procedure Problem eccurs Problem displayed by the LOD message Troubleshooting Carry out detailed according to the LCD troubleshooting Status Message List according to the 4 3 1 Troubleshooting Flow sea 4 3 2 4 3 1 LCD Status Message List 4 3 2 Troubleshooting Flow 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 114 DATA E20
65. ala within the bullar and Filiales the status ol the printer so user Tamporary DLL maso user pattem wil be deleted Replace Ihe borer Check the operation of the toner sensor lever Replace the Power Supply Unit High Voltage Replace the main board Hobe When replacing lhe main board instal lhe EEPROM mounted on the ran baard Hepace the mage drum carindge Note Amar replacing the drum cartridge reset fe drum counter Reser the Users Manuali Replace the fuser unit Notes Afer rentscing the hiner unil reset the kisar counter Refer te chapter 4 2 11 Normal aperaton Normal aperaton Catagory LOD stalus message Trouble status status Prints all fne fonts hich ane the panics Maal operation Reedy Ligii an execution Sy command Flash execution by gaile Incicatas that the pitar is under clearing pring process Set requested pape te front tray and press FORM FEED Tha second wil become MANUAL LETTER REQUEST or button MANLIAL 4 SHE REQUEST Frinta the dema page hcemal aperation Ready boi on executen y command flasn execucon by switch Pranks cumant mers sara Normal operalxn Light orc execulian by command Aeacy Rash by Requests fat a sheet indicated im the second line message is inserted Sel requested paper to front trag and press FORA FEED by hans button sheet hpa PAPER ENVELOPE Pr
66. amates an farce exit by FORM FEED swich when The lime aal in Press FORM FEED buten WAIT OUT of AUTO OPERATION in the level 2 menu has been passed since no dala received LCD status message Trouble or talus Doty slasus Incicales that the face down slacker is hil with sheets Ferre a paper Iren the slacker ETACEER FULL Pacer the broker sensor cable Repeal the insertion and removal of the connecter Citar or replace the stacker fal Indicates that ro pamer cr paper cassette in a tray Load a paper ar paper casseta 0 the PAPER Picts DLL L lincicales thal in ar attempt te use the Hird tray the fret or seori instali displayed tray which the medinm of tna path puled Ini cates that in ar attempt to use the secand tray fe first tray which is he medium of the path is pulled cu Provisions The first and second tray be returned Requests dicated in a Trst ing message is insered Load fia requassed paper in tray PELLICLE LLLE BEQUESTS indicates that the interpreter detects an error due to ToEowing Wanig POSTSCRIPT raasons From this pant on The data is Rushad uril the Check the peint job dama completa ol a jab itis aulomaicaly whan jab receiving 5 completed that the capacity od memory
67. ate After replacing the rode dy Burning the pi ee and ENT EH keys Set fie LEU 4 21 LEO hag set fhe printer an thia argine makla tate pressing the r EEO head time Healer amp Section Replace Board Prec Limit 2Hiah Yoane ta T Poor fusing Is paper of the specified grade used Use paper of the specified grade Yes is the spring of the back up roller normal Replace the spring Yeas Is the contact of the fusing unit assy contacted with the contact assy properly Adjust the contact of the fusing unit assy to contact the contact assembly properly Yes Replace the fusing unit assy Has the trouble been removed Yes End No Replace the Main board or Power Supply Unit High Voltage While bells or streaks in the vertical direction Ate the LED lans dirty Yes the LED lens Is tha contact plate of the transfer roter contacted with the Power Supply Unit High Voltage property See Figure 6 6 No the contact plate contact with the Power Supply Unit High Vollage property Yee the transfer roller See 3 3 35 Has the trout e been removed Yee End X lathe LED head installed properdy Check connector HEAD 14 HEAD t2p on the Main board and PC connector on the LED head install tha LED head properly Yea Replace the LED head Has the roubis been removed Yee End Morte
68. ble of the thermistor connected to connector on the Power Supph Unit Is there any flaw an the cable of the fherrmister Adusi lhe fherrmisber contact so as te Touch The contact assembly properly Yee Doss appear the heat on signal at pin 6 HEAT ON signal OW heater on slate of the POWER connector on the Main board Replace the Main board E Yes Heplace the Power Supply Unit High Voltage Mo Doesaluser unit error occur alter rere than 120 seconds from the power on No Geto A Yee ihe power FFIN Is the heater of the fuser init tuned on When the healer is Turned on heat js radiated r Yas Is cable of ihe Parrnistor connected CNE cannector on the Power Suppiy Und High Voltage No of ihe healer connected to CN2 connecter on Power Supply Unit 120 or 230 To the next page To on the next page From on Ihe preceding page From on the preceding page Yes Replace the tuser unit bs the printer recovered Na Replace the Board YES Is the heater ar thermistor open Measure the resistance between the thermistor contacts and between heater contacts normal resistance Z20 5 0 babeeem pins 1 and z 1 5 12 120 and 5 8 11 240 V between pina 3 and dt See chapter 7 3 Yee Replace the luser unit M AC voltage applied ta tha CN2 connector on the Power Unit
69. ce Manual OKIPAGE20 OKIDATA Chapter 6 Troubleshooting Procedures 1 Operator panel display The failure status of this printer is displayed on the liquid crystal display LCD in the operator panel Take proper corrective action as directed by messages that are displayed on the LCD 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 DATA Service Manual OKIPAGE20 Chapter 6 Troubleshooting Procedures If troubles should develop in this printer troubleshoot in the following procedure flow Troubles Troubles Troubleshoot from the LED Perform detailed trouble indicated by LCD status message list shooting with the trouble message See 6 5 1 shooting chart See 6 5 2 Image troubles and troubles that Perform troubleshooting ao with the troubleshooting are not indicated by char See 6 5 3 LCD message 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 a Service Manual 20 OKIDATA Chapter 6 Troubleshooting Procedures Page 79 Table 6 1 lists the status and troubles that may be indicated by messages on the LCD LED status o OFF e BLINK e ON C Undefined LCD status message Trouble of status Dale
70. ce iha ion xac be Has fhe trouble been removed a bnd Alter replacireg the LED head set ihe printerit thie angina mainte nance mode by fuming the power on while presse the FORM FEED am ENTEH keys Set ihe LED paad dive tine Meher Section Ne the Main board or Power Supply Unit High Voltage EF Black bells or stripes in the vertical direction Bepiace image drum Bie Trouble Been removed End After replacing the mage drum cartridge set ta printer the user mode by turning the peser on while pressing Ee MEL and raged ihe dium counter eter 0 Users Na Replace the LED head Has fhe trout been removed End Alter replacing the LEC hear set the printer in the angina mainta nance mode fy burning Ihe newer an while pressing the FORM FEED and ENTER keys Set the LED head drive fma Arfa in Seion 4 2 Mo Replace thia Main board or Power Supply Unit High Voltage 5 Cyclical error Frequency Remedy Image drum 3 17 94 2 mm Replace or clean the image drum cartridge 2 05 52 1 mm 3 24 82 24 mm 1 37 34 7 mm 1 17 29 8 mm 2 28 58 mm 88 mm Replace the transfer roller Replace the fusing unit assy Back up roller 46 88 mm Replace the back up roller Notes 1 After replacing the image drum cartridge set the printer in the user ma
71. cedure and do not disassemble any more than necessary 4 Only specified service tools may be used 5 Disassembly must be carried out according to the prescribed procedures Parts may be damaged if such procedures are not followed 6 Small parts such as screws and collars can easily be lost therefore these parts should be temporarily fixed in the original location 7 When handling printed circuit boards do not use any glove which may generate static electricity 8 Do not place the printed circuit boards directly on the equipment or floor Service Toots Table 3 1 shows the tools required for the replacement af printed circuat boards and units in the field Table 3 1 Service Tools Service Tools City Place of usa 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 129 Aw Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder This section describes the layout of the main components Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 130 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder This section describes the parts replacement methods for the components listed in the disassembl
72. creasing 13 0 1 0 2 1499 The printing operation timing chart is shown below Normal Mode Printing Timing Chart oe _ __ __ AAA ST ABI m SIRBA H The printing operation is carried out in normal mode Under ordinary circumstances such as when the power is turned on or when LOAD signal level is low the normal mode is enabled The printing operation is carried out in the following sequence First the printing data DATAS through DATAO are stored sequentially shifted in the shift registers of the LED drivers by the printing data synchronous clock CLOCK Then the printing data stored in shift registers are latched by the high level pulse of LOAD The latched printing data turns the LEDs on by STRB1 N through STRB4 N and actuates 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 bpx okidata com Page 18 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description The paper jam detection function supervises the paper state at power on time and during printing In the event that the following state occurs this function interrupts the printing process If any of the following errors is presented recovery printing will be p
73. d See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 37 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Open the manual feed assy 1 and release both right and left parts by pulling out the engagements on the lower part 2 Stand the manual feed assy 1 on end and unhook the engagements with both right and left manual feed hopper stays 3 Remove the OP panel assy See 3 3 4 4 Unscrew 5 screws 2 and remove the feeder unit front 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 bpx okidata com Page 38 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the feeder unit front See 3 3 10 2 Remove an E ring 3 gear assy clutch 4 and four screws 1 in this order and lifting out the roller assy regist 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 39 Ae Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the stacker assy See 3 3 6 2 Remove the feeder unit front See 3 3 10 At this point the manual feed assy has not to be removed 3 Remove the DC fan motor See 3 3 3 4 R
74. d in Pressure Faller Front Feeder Plate ae I e E eng Lg 22 BN _ 1 Hopping 1st Hopping Gear ne way Gear in Sub Halle hare position Micro Front Feeder Plate Pressure Haller Gear E Regist Roller Clutch 1 Clutch Peed Gea D L Main Motor Align Faller 2 Feeding After the end of hopping the pulse motor dedicated for driving the registration roller rotates to drive the registration roller The driven registration roller advances the paper until it comes out of the registration roller When leading edge of the paper causes the paper sensor to turn on the printing is started synchronously Although Gear D is always rotating due to an all time rotation of the main motor in direction c the regist roller would not rotate because the clutch regist is turned off After the completion of hopping turn on the clutch regist to drive the regist roller The regist roller would drive a paper until the paper has passed 3 Charging Charging is effected by applying a DC minus voltage to the charge roller that is in contact with the image drum surface Charge nalar drum 4 Light emitted from the LED head irradiates the image drum surface with negative charges The surface potential of the irradiated part of the image drum drops thereby forming an electrostatic latent image
75. d the Board LEX properly Yes Replace the GEAR Assy OK Yes end No Replace the Board LEX No Connect the connection card property Yes Is the Duplex Frant sensor lever operating normally Yes 15 the connection cord between the Duplex Front sensor and the Board LEX connected properly Yes Does the connection cord have a break Yes the Duplex Front sensor FX50 Photo Sensor OR end No tha Baard LEX Na Connect tha connection cord property the Duplex Front sensor lever LEVER Sensor F H and SPRING sensor FSA Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 116 OKIDATA aiii er Unit 5 1 Interconnection Diagram 5 2 PCB Layout 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 117 OKIDATA ii chapter Duplex Unit Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 118 Service Manual OKIPAGE20 OKIDATA Chapter C Duplex Unit PCB LEX a Lu a Motor diver Fiear Sensor Copyright 1997 O
76. data com Page 90 Service Manual OKIPAGE20 Chapter 8 Parts List Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 91 OKIDATA mm a Qty 22140 40597101 GUIDE Assy Cassette T Nw SEN REN 4 4122 1217 Pull Block RESTI oo Po 4 140349102 Lever Link Caulking Sb ox ow 5 140349701 ROLLER Link 4PP4076 5358 Rink Support 7 60 40607201 Spring Sheet remm Eee m E E RET P001 Pore PP P001 11 40377701 GUIDE Assy cassette R 2 12 40597201 GUIDE Cassette R For Lg 13 340349101 Lever Link Caulking 14 140368302 Board PXC 15 2201000P0140 Connector IMSA 9714N 14A 1 0 6 pw ue mee POP P003 4PP4076 5360 Detector Spring 9 18 40389801 PLATE Earth Bottom 2 2 6 12 19 4051801 PLATE Earth Link 1 1 B 6 20 2201000 0141 Connector IMSA 9714N 14B 1 0 6 21 40375001 Code Wire 1 0 6 To Duplex 22 40316901 J PLATE Botom 1 0 3 6 pf 23 140377801 FRAMEASSY Hoppng 1 6 f 24 40597301 FRAME Hopping For 25 40322101 PLATE Hopping caulking 1 0 3 6 36 SHAFT Heep 1 Jose 27 40442501 ROLLER Guide 7
77. dates to this material http bpx okidata com Page 82 Service Manual OKIPAGE20 Chapter 7 Wiring Diagram EDHEAD aar i Lone Dii E AE ETE es a e E 2 E um SENSOR E POWER SUPLY UNIT HIGH VOLTAGE Copyright 1997 Okidata Division of 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 Servi Chapter 7 wiring Diagram 1 Main board BOARD AAA ELE n m m m m m m mm m mu mm mm m mm m m wm mmwmmmmmmmmmsa 2 Power supply board AC 120V 230V 4 PostScript ROM module BOARD MSM or BOARD FSL 1 BOARD FSL 2 BOARD MSM HONO EEPROM 5 Flash ROM module BOARD FSL 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 OKIDATA Betwee pins 1 and2 3 142 Motor Main a Between pins 3 ard 4 3 152 1o CNS connector on tha Power Supaly nit ACTA or 2523 Between pins 1 amd 2 22080 ab 25 C Between pins 3 and 4 T 543 120V 5 012 240 on the Power Supply Unit High Voltage Fusing Unil Unit
78. de 65 4 1 4 EEPROM Initialization 66 4 2 Adjustment When Replacing a Part 67 4 2 1 Resetting the fuser counter 68 4 2 2 Destination setting 69 5 Periodic Maintenance 5 1 Period Replacing Part 70 5 2 Cleaning 71 9 2 1 Cleaning of LED lens array 72 9 2 2 Cleaning the Plastic Film 73 6 Troubleshooting Procedures 6 1 Troubleshooting Tips 74 6 2 Points to Check before Correcting Image Problems 75 6 3 Tips for Correcting Image Problems 76 6 4 Preparation for Troubleshooting 77 6 5 Troubleshooting Flow 78 Table of Contents Page 6 5 1 LCD status message trouble list 79 6 5 2 LCD message troubleshooting 80 6 5 3 Image troubleshooting 81 7 Wiring Diagram 7 1 Interconnect Signal Diagram 82 7 2 PCB Layout 83 7 3 Resistance Check 84 7 4 Program Font ROM Location 85 8 Parts List Figure 8 1 Printer Unit 86 Table 8 1 Printer Unit 87 Figure 8 2 Frame Main Unit 88 Table 8 2 Frame Main Unit 89 Figure 8 3 Base Unit 90 Table 8 3 Base Unit 91 A Centronics Parallel Interface Centronics Parallel Interface 92 B RS 232C Serial Interface RS 232C Serial Interface 93 C Duplex Unit 1 OUTLINE 94 1 1 Functions 95 1 2 External View and Component Names 96 2 0 Mechanism Description 97 2 1 General Mechanism 98 2 2 JAM Release Mechanism 99 2 9 Removing Installing Duplex Unit 100 3 0 Parts Replacement 101 3 1 Precautions Concerning Parts Replacement 102 3 2 Parts Layout 103 3 3 Parts Replacem
79. e system maintenance mode is provided with the following functions 1 Page count display e The total number of pages counted at the engine is displayed on the LCD 2 Page count printing enable disable e This function selects whether to include enable or exclude disable the total number of printed pages counted at the engine at the time of menu printing 3 Rolling ASCII continuous printing e The rolling ASCII pattern is printed continuously for various engine tests e Press the ON LINE key to cancel this mode 4 RS232C LOOP TEST e Performs a loop test of RS 232C 5 EEPROM reset e All EEPROM areas including Menu level 2 to the factory default values e The following items are excluded Head drive time setting Fine adjustment of printing start position Standard tray paper feed amount setting e Transition to the operation mode occurs upon completion of resetting Press the Menu key to update each category The operation returns to the first category after updating the last category 6 HSP ERROR recovery e Select HSP ERROR recovery function either recover or stop 7 HSP ERROR count e Display total HSP ERROR count 8 HSP ERROR count reset e Reset the HSP ERROR counter 9 SIDM enable disable e If it s selected disable cannot select SIDM emulations by Menu when the Enter key is pressed Press the Enter key CONTINUOUS PRINT PRINTING Enter key
80. e 99 OKIDATA D Unit The LEVER Lock can be pulled outwards and the sheet route section of the Duplex opens by pulling out the cassette This enables a jam to be released Structurally the LEVER Release can be pushed up by back edge of cassette and the sheet route automatically close when the cassette is returned LEVER Halease LEVER Lock Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 100 OKIDATA Duplex Unit Removing Duplex Unit 1 Power Off and remove the Paper Cassette from 1st tray 2 Remove the Lever Release from the boss of the Hopping Frame LEVER Release 00 Fela LEVER Hsliease B View 3 Rotate the LEVER Lock Dup in the direction of the arrow to release the Lock Connector fur CUM 4 Pull the Duplex Unit out of the unit LEVEH Lock Lip Printer Duplex Unit Installing Duplex Unit 1 Hold the LEVER Lock Dup in horizontal lock position Then insert the Duplex Unit along the groove up to accord both rear faces between printer and Duplex Unit Printer Duplex Unit Printer and Duplex Unit will connect automatically with built in connector 2 Lock the Duplex Unit to the printer by turning the LEVER Lock Dup to the next locking position as below Connector
81. e paper size set by command or menu The paper size check for manual feed specified considers the reference size is free size 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 19 aw Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description When the stacker cover is opened the cover open microswitch on the Power Supply Unit High voltage is turned off to cut the supply of 30V to the high voltage power supply circuit As a result all high voltage outputs are interrupted At the same time the CVOPN signal is sent to the control board to notify it of the off state of the microswitch and the Main board performs the cover open processing 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 20 Service Manual 20 OKIDATA Chapter 2 Operation Description e Composition The device consists of the stirring gear which rotates at a constant rate the stirring bar and the magnet on the stirring bar The stirring bar rotates through the link on the protrusion in the stirring gear Protrusxn Stirring Bar Stirring Gear e Operation Toner Low is detected by monitoring the time interval of the encounter of the magnet set on
82. ection of arrow D The planet gear F moves to the direction of arrow G and drives rollers A and B The roller C is linked to pulley which is on the same shaft as roller A and it also turns at the same time as roller A The paper is fed for a predesignated distance until the leading edge reaches roller C 2 Next the hopping motor rotates in the direction of arrow E The planet gear F moves to the direction of arrow H and drives idle gear J The rotation of idle gear J is transmitted to the gears linked to it and drives pulley on the same shaft as roller A turning roller C to feed the paper into the printer until it reaches the registration roller of the printer During this process a one way bearing is engaged at pulley so that the rotation of pulley is not transmitted to roller A preventing any feeding of papers by roller A J Hopping motor Planet gear F Pul 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 157 OKIDATA Servie papier E The hopper automatically feeds the printer with the paper being set single sheet at a time Printer Roller Raber Hegistratian rodar Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this materia
83. ee 3 3 28 5 4 Unscrew two screw 1 and then remove Guid Assy Cassette R 2 5 Remove SPRING Sheet 3 and then remove LINK Sheet 4 and pull block 5 Pay attention the direction of hook of SPRING Sheet 3 6 Remove spring 6 and then remove cassette stopper 7 7 Remove screw 8 from LINK Sheet 4 and then remove link support 9 and Roller link 10 8 Unscrew two screws 11 and remove the Square shaped connector 176496 1 12 and Nylon Connector Cord 13 and TR 23 11 R CORE 14 9 Unscrew two screws 15 and remove the two Plate Earth Bottom 16 10 Unscrew two screws 17 and remove the Square shaped connector 5 176496 1 18 and Connection Cord Wire 19 and TR 23 11 R CORE 20 11 Unscrew a screw 21 and remove the Detector spring 22 12 Unscrew a screw 23 and remove the Board PXC 24 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 58 OKJDATA a This chapter explains the adjustment necessary when replacing a part Adjustment is made by changing a parameter value set in EEPROM on the controller PCB A parameter is able to set with the key operation on the operator panel This printer has three kinds of the maintenance mode it is required to select one of the maintenance mode necessary when replacing a part 4 1 Maintenance Modes and
84. eived through the interface lsthe interface board faptian connected to tha interface connector on the Main board properly Connect the interface board option to the OKI interface connector properly Yes lsthere any broken or bent in the interface board option Yes Ask the user to replace the interface board option Mo Replace the Main board OK Atrouble may exist in the interface board option interface cable or hast side Ask the user ta check these items Synchronous serial VO error ERROR 74 Are POWER connector of the Main board and Connection cord wire Fig 8 2 No 21 te LN cord wire Fig amp 2 No 21 and CN3 connector of tha Power Supply Unit AC120V or 230V connected properly Connect the connectors properly Yes sthere any flaw or breake T Yes Replace the connection cord wire Yes Replace the Main board la the printer recovered Mo Replace the Power Supply Unit High Voltage Yes END Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 81 DATA Service Manual OKIPAGE20 Chapter 6 Troubleshooting Procedures Procedures for troubleshooting if abnormal images have been printed out are explained below Figure 6 3 below shows typical abnormal images Trouble Flowchart number Ima
85. emove the contact assy See 3 3 2 5 Remove the plate FG F 1 6 Remove the TR gear 2 and roller transfer 3 7 Unscrew 7 screws 4 and remove the main frame 5 8 Unlock latches at two points of the lever back up release 6 and pull out it in right direction 9 Unhook the EP lock spring 7 and remove the EP lock lever 8 10 Take off the E ring 9 and remove the plate FG 1st 10 and gear assy clutch A 11 Unlock 2 latches to remove the motor assy main 12 and idle gear 13 12 Unscrew 2 screws 14 and remove the motor main 15 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 40 rA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the lever back up release See 3 3 12 8 But the roller transfer feeder unit front plate FG have not be removed 2 Remove the cover rear 2 See 3 3 6 5 3 Loosen 2 screws 1 unlock the both side s latches and remove the cover rear 2 4 Unlock the latches on both sides of the guide assy eject 3 and lifting it out 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 41 Service Manual OKIPAGE20 ab OKIDATA Chapter 3 Parts Replacemen
86. emperature and humidity must be in the range where no condensation occurs 13 Noise During operation 50 dBA or less without second tray 55 dBA or less with second tray At standby 45 dBA or less Power save mode 43 dBA or less 14 Consumables Toner cartridge kit 5 000 5 duty Image drum cartridge 30 000 at continuous printing 19 000 3 page job Simplex printing Simplex printing without Power Save 10 000 1 page job Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 7 OKIDATA TOn 1 5 1 Certification label 1 5 2 Warning label 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 8 OKIDATA a The safety certification label is affixed to the printer in the position below 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 OKJDATA he warning label is affixed to the portion which may cause an injury to human Follow the instructions on warning labels during maintenance Copyright 1997 Okidata Division of OKI America Inc All rights reserved
87. ent Methods 104 3 3 1 Board LEX 105 3 3 2 Connector IMSA 9714N 14A 106 3 3 3 Photo Sensor 107 Tm 3 3 4 SOLENOID Assy 108 3 3 5 Motor 109 4 0 Troubleshooting 4 1 Precautions Prior to the Troubleshooting 4 2 Preparations for the Troubleshooting 4 3 Troubleshooting Method M 4 3 1 LCD Status Message List 4 3 2 Troubleshooting Flow 5 0 Connection Diagram 5 1 Interconnection Diagram Table of Contents Page 9 2 PCB Layout 118 6 0 Parts List 119 Table 6 1 Duplex Unit 120 D Second Third Paper Feeder 1 0 Outline 121 1 1 Functions 122 Appearance and Parts Name 123 2 0 Description of operation 124 2 1 Driving Mechanism 125 2 2 Hopper Mechanism 126 3 0 Parts Replacement 127 3 1 Precautions Concerning Parts Replacement 128 3 2 Parts Layout 129 3 3 Parts Replacement Methods 130 3 3 1 Roller assy hopping Roller assy feed 131 3 3 2 Cover front assy 132 ren 3 3 3 Board BBB 133 3 3 4 Lever paper end Lever paper near end 134 3 3 5 Motor 135 T 3 3 6 Connector IMSA 9714N 14B Connector 136 IMSA 9714N 14A TO 3 3 7 Frange pulley pulley Idle Mini pitch belt Plate Earth 137 shaft Gear double Tray switch assy 3 3 8 Roller feed 138 3 3 9 Bracket sub roller 139 3 9 10 Frame side L assy 140 T 3 3 11 Frame side assy 141 4 0 Troubleshooting 142 4 1 Precautions Prior to the Troubleshooti
88. erformed by removing the jammed paper namely by opening the upper cover removing the jammed paper and closing the upper cover Cause of error Paper Input jam At power on time the paper is placed at the inlet sensor After hopping operation is attempted three times the leading part of the paper does not reach the inlet sensor Paper feed jam At power on time the paper is placed at the paper sensor The leading part of the paper does not reach the paper sensor within a predetermined distance after the paper has reached the inlet sensor The trailing part of the paper does not pass over the paper sensor within a predetermined leading edge of the paper has passed over the paper sensor The leading part of paper does not reach the outlet sensor within a predetermined distance after the paper has reached the paper sensor Paper exit jam At power on time the paper is placed on the outlet sensor The paper does not pass over the outlet sensor within a predetermined after the leading part of the paper has reached the outlet sensor The paper size check for manual feed specified considers the reference size as free size Paper size error The size of the paper is supervised by the inlet sensor 1 Itis detected that the paper does not pass over the inlet sensor 1 within predetermined range of distance The inlet sensor 2 detects that the size of the loaded paper is A4 or larger or smaller than A4 The detected paper size differs from th
89. essing the MENU bey reget the diim counter Pelar te User s Manus Replace Ihe Main board Power Supply Uiit High Voltage FF Dark background density Has thie mage drum been exposed axtemal light a Wes Mound the image drum in the pentes and wait Bor aout 30 minutes istha begat roller of tha using dirty Yee Clean the beat roller Mo contact of the cleaning roller of the image drum cartridge contacted with contac assembly See Figure amp 5 C1 s AUER ihe contact ol the chagrin roger 16 contact the contact pici Yes Replace tha image drum carindge Has the trouble been remover Yee End Note Altar raplacing tme mege drum cartridge set the printer in the user mainhenanee mode by turning hie power on while pressing the MENU Bey and reset the drum counter Refer te User s Manus Neo the board Power Supply Urat High Voltage paper is Is the LEQ head connected proper Check connector HEAD 125 on the Alain board and PO connector en the LED bead Ho Connect fhe LED head properly or replace the haad cabila Tos Is iho contact of the image drum cariridga contacted with fie ground conlact pomaly Sei Figur 6 5 Check fhe ground contact of the image dnim carta Yes the connectors HEAD 1471 and HEAD 12P s Heplace the hael Hepla
90. et sensor lever operate smoothly No Replace the inlet sensor lever Yes Clean the inlet sensor 1 on tha Power Supply Unit High Voltage ar replace the Power Supply Unit High Vottage See Fig 2 3 Sensor Layout Diagram Replace the hopping roller assembly or paper cassette assembly Is tha hopping roller rotating Yes Set the paper cassette property No s the hopping motor rotating Yes GEAR ASSY CLUTCH 250 turned ON Mo lIsacable and connector securely connected between GEAR ASSY CLUTCH and MAIN BOARD 7 Connect the cable firmly 15 the printer recoverd Wes End 1 Na Replace tha GEAR ASSY CLUTCH 250 Yas Haplace the Frame Assy Happing No Are the cable and connecter between the hopping molor and tha Main board connected properly see chapter 7 1 Connect each connector properly or replace the connector cord while 9 pins Yes sthe coil resistance normal resistance about 8 7 W of tha hopping motor normal Na Replace the hopping mator Yes Replace the Main board 2 2 Paper input jam front feeder Does jam error occur when the power is turned Yes isthe paper at the inlet sensor lever Yes Remove the paper Does the inlet sensor lever operate smoothly the inlet sensor lever Yes Clean the inie sensor 1 on the Power Supply Unit High Voltage replace the Power Supply Unit High Vottage See Fig 2 3 Sensor Layout Diagram
91. functions Menu 1 Menu 2 Tray select Copies and Paper Size 7 X ADJUST This function is used to adjust the printing start position within the range of 2 mm in 0 25 mm steps in the X direction 8 Y ADJUST e This function is capable to adjust the printing start position within the range of 2 mm in 0 25 mm steps in the Y direction 9 Duplex adjust e The function which performs a correction in Y direction towards the sheet supplied from the tray in double sided printing 10 Select paper source command parameter Second tray e The function which sets the parameter selecting the second tray by paper source command on PCL 11 Select paper source command parameter Third tray e The function which sets the parameter selecting the third tray by paper source command on PCL 12 Select paper source command parameter Front tray e The function which sets the parameter selecting the front tray by paper source command on PCL 13 Page placement e function which aligns a printing image to the right 14 SETTING e This function is used to adjust to improve print quality Rough thick paper Low temperature humidity and or blotchy faded print appeared 2 Rough thick paper low temperature humidity and or blotchy faded print appeared 1 Rough thick paper low temperature humidity and or blotchy faded print appeared 0 Normal media environmental conditions 1 Rough papers high temperature humidity and or snowy
92. g direction is arrow A papers will be carried to the defined amount without being impinged to the regist roller and then the rotating direction of the hopping roller will be changed to arrow B When the rotating direction of the hopping roller A arrow direction the motion is same as 1 When B arrow direction the motion will be same as 2 until Roller K begin to rotate The planetary gear M will shift in the direction of arrow L by way of the gear O which begin to rotate at the same time when the roller K does And gear N rotates resulting in rotating the gear J and roller K on the same shaft and impingeing papers to the regist roller within the printer At this time as the gear O and gear P engaged by the planetary gear G on the same shaft on which the gear J and roller K are placed includes an one way clutch gear the planetary gear G won t rotate Impinged papers are afterwards fed by the control of printer s inside Gear O Engaging to gear P or planetary gear G Gear J for timing gg Hopping roller gear T F Lari d E Planetary gear Sub roller Sub roller gear ee gea Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 126 Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder The ho
93. g error evarriun error and on is detected The proloog of hast and pnnber should ba rechecked informs Thal an emar cocum in the home position of front tray Although the iron becomes unavalable by pressing Recover gaild the other trays cantus operaling normaly Promotes try thal cartridge should be replaced afar 190 sheet since lhe debeetion of borer law s temporunhy by opening and closing the cover This indication wil be displayed each et sheal printing unless Te carnage x replaced Paper al improper sine was ted Tram the tray tritt MANUAL TRAYS FRONT FEEDER Press the RECOVER key on fa operator a release the error display Change the setting of the hast side sa That the hast detect the busy state of te printer Resend te data from the host sida to the printer Press lhe RECOVER key on te operaior panal to relaase thie error display simpklhy page data Presa the RECOVER key on the operator panel to rebas eror daplay Check settings of H52320 in the mara Replace the interface cable or fhe Main board Erard When replacing the Main beard metal the EEPROM mounted in the replaced Main board Replace the toner Check the papar in the tray or check W see mone than one of copy led 3imultananusy Open the cover en dose it te perdori recovery panting and tie amor dianlay
94. ges are light or blurred as a whole Figure 6 4 A Dark background density Figure 6 4 B Blank paper is output Figure 6 4 C Black belts stripes in the vertical direction Figure 6 4 D Cyclical defect Figure 6 4 E Print voids Poor fusing Images are blurred or peeled off when touched by hands White belts streaks in the vertical direction Figure 6 4 F nowy print of high density pattern Figure 6 4 H Blotchy faded print Figure 6 4 1 10 Light ar blurred B Dark background C Blank paper Sack stripes in the images a whole x Conn aff Cyclical detect E Write belts cc H anyay print al gi Aockly faded pri aries ies Fig 6 4 Abnormal images 1 Image are light or blurred a whole 2 Is low 55 the TONER LOW message disglayesf a Yes Supply toner Ho is pagar af spec ied grande used Mo Use paper of the spaciliad grade Yeo lens autace of ie LED head dirty Wes the leris Me B Ihe LED head insbalied propery Check HEAD 14P HEAT 12 od the Main board and Po connector on The LED haed Tor proper connec lan Mo Install tha LED haad property Yea bk the contact Pate at the Maneter roller contactesd with Tha contact assembly c the Power Supply High Voitana property Sor Figure 6 4 fre conlact plata of the transfer roller contact with fae Power Supply
95. h R 1 1 B 6 19 40347001 Coverfrontassy 1 1 B 6 20 40366501 3 Moor 1 1 6 21 4024701 X JGeadobe 1 B 6 _ _ lt 23 44211 Flangpulley 1 1 B 6 CE a 55 Swie IMSA 9714N 14B To Printer or 2nd Tray 26 2201000P0140 Connector IMSA 9714N 14A 1 0 3 6 To3rd Tray En Roller feed 4PP4043 4489 Feeding bearing P001 ae 6 3 3 3 3 3 Us oO 79 U Bf N UJ E oPP3522 3568 ADF bearing P001 e n e n 40367107 spring uB 1r 19 1 1 12 2 Hl 6 L 6 3 6 I 6 2 6 41 40607301 Spring sub roller 1 0 6 f 42 408176001 1 6 43 140385901 Leverreleaseassy 1 0 3 6 f 44 40363301 Springrelease 1 0 3 6 f 45 40442501 Guide roller 2 0 6 12 46 4PP4076 5308 Bearing F 3 P001 47 40363401 Space hoppingshaft_ 1 OB 48 40348401 2nd 1 1 B 6 49 40348501 Bracketplanetassy 1 1 B 6 50 40317901 jLeverppered 1 B 6 i 51 4031801 Leverpapernearend 1 1 B 6 52 403711 1 0 B 6 53 40375101 connectioncode wire 1 0 3 6 54 4LP 1313 121 Miniptchbet 1 1 B 6 55 40371301 Roller assy hopping 2 6 2 56 40313201 H 2 6 12 57 40378401 H 1 3 6
96. he equipment or floor Service Tapis Table 3 1 shows the tools required for Ihe replacement of printed circuit boards and units in the field Table 3 1 Service Tools Service Tools Na 1 100 Phisps screwdriver No 2 100 Phiaps screwdriver NO 3 100 screwdriver No 5 200 screwdriver giel multimeter Handy remoyer uil g i Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 160 OKIDATA Servie papier E This section describes the layout of the main components 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 161 OKIDATA Servie papier E This section describes the parts replacement methods for the components listed in the disassembly order diagram below Multi Feeder Separator 3 3 1 AOLE PCB 3 3 2 Square shaped connector 3 3 3 Hopping motor 3 3 4 Planet gear 3 3 5 Roller B 3 3 6 Roller A 3 3 7 Mini pitch belt amp Feed roller 3 3 8 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 162 OKIDATA HC 1
97. hed the FF Cam and the Front Hopping Roller are driven During the FF Cam rotated approx 60 degree the Release Lever was pushed and the Front Feeder Plate lifts up then the Front Hopping Roller picks up a sheet of paper At the FF Cam rotated approx 180 degree the Front Feeder Plate is pushed down and locked by the Release Lever again At the FF Cam rotated approx 275 degree the paper fed until the Inlet Sensor turns off 2 Aligning After turning on the Inlet Sensor the paper fed by a predetermined length and choked up to the wedge space formed by the Regist Roller and the Pressure Roller so that to align the skew of paper 3 During the paper fed from the Front Feeder Plate the one way clutch of 1st Hopping Roller is idled and not to drive the 1st Hopping Roller and the Sub Roller 4 Feeding After aligned the paper the Hopping Motor turned off and stop hopping Then Clutch Regist turned on and the Regist Roller start to feed the paper After the paper fed the Front Hopping Roller drives the Front Hopping Shaft and attached the FF Cam with small idle torque of build in one way clutch and when comes into the Release Lever the one way clutch is slipped and the FF Cam is stopped at the upper position home position The Front Hopping Roller continuously idled up to the paper away 5 Start printing after the paper turns off the Write Sensor Hopping Motor Front Feeder Gear one way clutch buil
98. icated i combination with offer massages of the frst ling informs Thal thee Sheets are near Jn ena in tray cassette with ap ara and wher he rermasering reaches 20 16 detgrler LCD salus message Trouble ortas Daly status at oe o D NITEHTICH 5 READE ATTEHTLCOH 8 AT EER UOC TOMER CHANGE DEADH Cee ENES neesi informs Thal thie amount of formar le This is indicated in combination with other masses ol Th fired fre Normal operatic possibile But when LOW TONERS OFF has been selected The mer ATTENTION LED wil flash Informa that toner sanear defects an emm But whan the total drum count were gt 30 pages this amor would be indicated when 1 Talal drum count ware 30 pages an mpessble to reset alam ERROR 77 which will be described laler would be indizehed This is inciicated in combination with other messages of the first Ene Formal operation amp passible Informs al the drum Thes is incisated in oomhbnation wiih other messages ot fne first Ere Marmal operatio is arabiad T desired that the life of a replaceable part such as user ducing device and sober This is indicated in combination wit other massages of the first Ene Formal operation i possible indicates that the niember of sheets in curent prins when thes number of copies amp or mere Detetes moyak parted d
99. ier E 5 1 Interconnection Diagram 5 2 PCB Layout 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 177 Service Manual OKIPAGE20 Chapter E Multi Feeder Putse molor pim F AOLE PCB To tha Printer 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 178 OKJDATA HEC eens AOLE PCB 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 179 OKIDATA ME SCAN Table 6 1 Multi Feeder UE Remans Qty 001000 1 4PP4083 5544 Separator 1 1 3 or Mem or P PE p o acu 4PP4083 5520 Planet gear or a PP P001 ll P001 4PB4043 4614 pulley P001 7 4LP 1312 338 Minipitchbelt 1 313 6 ii oe Poer P001 i on O DJ 2011 UN 2201000P0141 Connector IMSA 9714N 14B 4 54011 4448 Nylon connector cord P004 P001 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
100. in the disassembly order diagram below Duplex ng Board LEXx 3 3 1 L cerner 3 3 25 Sansan 3 3 3 Solenoid Asgy 3 3 4 Matar 3 3 51 3 3 1 Board LEX 3 3 2 Conector IMSA 9714N 14A 3 3 3 Photo Sensor 3 3 4 SOLENOID Assy 3 3 5 Motor 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 105 DATA E20 1 Remove two LEVER Lock DUP 1 by rotating them in the arrow direction 2 Unscrews five screws 2 to remove the bracket 3 3 Unlatch all the nails and unplug all the connectors 4 to remove the Board LEX 5 Note When installing the Board LEX install it positioning earth plate over the PCB Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 106 Service Manual OKIPAGE20 Chapter C Duplex Unit 1 Remove two LEVER Release DUP 1 DUP 3 2 Take away two SPRING Support 2 to remove FRAME MAIN Remove the FRAME MAIN DUP by lifting in up from A side 5 3 Unscrew two screws 4 to unplug the Connector IMSA 9714N 14A Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to th
101. intenance mode by turning the power on while pressing the MENU key and reset the drum counter Refer to User s Manual 2 After replacing the fusing unit assy set the printer in the engine maintenance mode by turning the power on while pressing the FORM FEED and ENTER keys and reset the fuser counter Refer to See 4 1 6 Print voids Is plate of the ansiar palier conlacted wath the Power Supoly Unit High Votape property See Fagure 8 5 ho ile contact pale contact To tia Power Supper Uni Hin Yol age praparty and the shad of Ihe rransfar rolar Yes Replace the transler roller See 3 5 98 Hag He Trouble been removed a Yas End Na Are ihe conlect of Ihe supply roller image drum arid charging pele contacted wah fie ocenmtact assy prope see Figure 6 6 CI 0 ET Aju ihe contacts b conli Ihe assy prope Yes Hepke the image deum caririckge Has Ius Tote baean remcsar Yes End Aller replacing the mage drum castridge Sel the printer i Hie user maintenance mode ty turning the power on while pressing ERU and ese ihe drum counter Refer to User s fhe LED head installed Check connector HEAD ti HEADS 12pi an Ine Main board and FX Conector an Iba LED haad ia nal Pie LED head Yes Heplace da LED head er Ihe head cable as trouble beer removed Yes Emi N
102. is material http bpx okidata com Page 107 DATA E20 1 Remove the Frame Main DUP see section 3 3 2 2 Release the lock to remove two SPRING Lock frame 1 and two LEVER Lock Assy 2 3 Pull out four SHAFT Pinch 3 and remove four ROLLER Pinch 4 and eight SPRING Pinch u 5 4 Release the lock to remove two BRACKET Pinch 6 and two SPRING Pinch R 9 5 Release the lock to remove LEVER Sensor D IN 10 and SPRING Sensor 11 6 Unplug the Connection Code Wire 12 and remove Photo Sensor 13 Film Pinch Note It should not become a state such as of dotted line from the results of installation 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 108 OKJDATA 1 Remove the Frame Main DUP See section 3 3 2 2 Release the lock to remove Two LEVER Sensor F R 1 and two SPRING Sensor F R 2 3 Unplug the Connection Code Wire 3 and remove Photo Sensor 4 4 Take away the SPRING SL 5 and two screws 6 to remove SOLENOID Assy 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 bpx okidata com Page 109 OKJDATA 1 Remove the Frame Main DUP
103. isobey is released Fiernave al of the paper in the animer pan the cover fan close it to padom recovery prr ng and w amar display is released Rene ad of the paper in the printer pen the cover fen close il to perform recovery pirang and the amor display is released ad of tha paper in the Deen he cover fren dose iE To peor recovery printing and the amar dianlay relaaaad Remove al of the paper in the omer the cover Fan code it to parler prinsing arde emar display is released Check the papar in the casseta Open the cover fien close it to perom recovery prr ng and ihe enor display 25 Il the ocuurs frequerdy see chapler 6 5 2 Category LCD status message Trouble or tatus Daily status WETTER ICH HEA PAPER FEED CHECK TERE E TAPER EZINE THE HSP CARD HOST ES VER OPER Infcems that a jam coturi paper runring after axing from Ihe Infcems that a jam occurs after acing paper Open fre cover anc remove the papar that EF cand is under reget It can be automatically restored by stopping the reset infcems that ar erar significant oocurs The opecalian is continued by pressing Rece xx 15 LF timeout 20 Initia aor
104. itive charge induced to the transfer roller surface to be transferred to the paper at the contact between the transfer roller and the paper As a results toner charged negative that is attracted to the image drum surface is transferred to the upper side of the paper by the positive charge on the lower side of the paper Image drum Translar rolet 7 Fusing After the end of the transfer the unfused toner image is fused on the paper under heat and pressure as it passes between the heater roller and the back up roller The heater roller with a Teflon coating incorporates a 750W heater Halogen lamp which heats the heat roller A thermistor which is in contact with the heater roller regulates the heater roller at a predetermined temperature about 180 200 C A safety thermostat cuts off voltage supply to the heater by opening the thermostat in the event of abnormal temperature rises The back up roller is held under a pressure of 5 kg from the pressure spring at each side amp anarstcn Then eto Heater Rolle Paper rassure Spring 8 Cleaning After the end of the transfer residual toner on the image drum is attracted to the cleaning roller temporarily by static electricity to clean the image drum surface maga Drum Claaring Paler Power Supply Paler 9 Cleaning of rollers The charge roller transfer roller and cleaning roller are cleaned in the following cases e ln
105. kidata 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 119 Service Manual OKIPAGE20 Chapter C Duplex 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 bpx okidata com Page 120 OKIDATA Qty Recommended Qty 50 00 100 J 9 1 40658401 COVER Upper DUP Aff 1 1 je mg 2 40339401 ROLLER Pinch 6 6 18 36 H5 3 140382201 SHAFT Pinch 44 12 4 403932001 SPRING Pinch U 4 4 2 p4 5 40393202 SPRING Pinch U 22 6 12 6 40393301 SPRING PinchhR 2 l2 6 H2 HM 7 404577000 Pinch 22 6 2 8 40457801 Pinch 2 l2 6 9 140443801 LEVER Lock Assy 10 10541501 SPRING Lock frame 1 1 3 6 11 40541502 SPRING Lock frame e _ SE Sensor D IN 13 40393601 SPRING Sensor D IN 11 4YB4120 1137 FX50 Photo Sensor EL ee 15 40598001 Assy DUPLEX 76 12 2201000P0140 Connector IMSA 9714N 144A 17 40375201 Code Wire EN IN Sensor hh wk 4PB4076 5330 Motor mE um SM TNI M Lui e 23 403191 ROLLER Feed R 1 1 B 6 4489 Bearing Feed e a MR PPP P por 26 40339901 X GEAR Z4080
106. l http opx okidata com Page 158 OKJDATA MEC This section covers the procedures for the disassembly reassembly and installations in the field This section describes the disassembly procedures and for reassembly procedures basically proceed with the disassembly procedures in the reverse order 3 1 Precautions Concerning Parts Replacement 3 2 Parts Layout 3 3 Parts Replacement Methods 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 159 OKIDATA EM Feeder 1 Parts replacements must be carried out by first turning the printer power switch off O and removing the Multi Feeder from the printer 2 Do not disassemble the Multi Feeder if it is operating normally 3 Establish the extent of disassembly suitable for the purpose of the procedure and do not disassemble any more than necessary 4 Only specified service tools may be used 5 Disassembly must be carried out according to the prescribed procedures Parts may be damaged if such procedures are not followed 6 Small parts such as screws and collars can easily be lost therefore these parts should be temporarily fixed in the original location 7 When handling printed circuit boards do not use any glove which may generate static electricity 8 Do not place the printed circuit boards directly on t
107. l bus 32 bit external bus 40 MHz clock that incorporates and RISC CPU and its peripheral devices and has the following functions Built in device Chip select controller Control of peripheral LSI ROM RAM and I O device Bus controller DRAM controller DMA controller Transfer of data from Host I F to RAM erial interface controller Control of RS 232C serial interface Parallel interface controller Control of Centronics parallel interface Generation of various control timing Monitoring of paper running and paper size Serial I O Port Control of serial interface between controller and operator panel EEPROM Control of a serial interface between controller and power supply board Outputting of various control signals Motor driver controller Compression extension circuit Compressed frame buffer is produced by compressing the data of temporary band buffer Extension printing operation is executed by extending the data of compressed frame buffer 2 Program and Font ROMs The program font ROM s store the HP LJ5 emulation program and various types of font MASK ROM is used as the program font ROM s 3 DRAM s 4 Megabyte DRAM 16 Mbit DRAM x 2 is mounted as resident memory to be used for storing the program and providing various buffers This DRAM is expandable up to 68 Mbytes by adding expansion memory SIMMs This DRAM provides the areas shown in the following table Memory capacity setting Memory area
108. layed in the form of messages on the LCD is provided in Table 4 1 Jam Error Notifies of occurrence of Check the paper in the CHECK FEEDER jam while the paper is Multi Feeder Carry out being fed from the the recover printing by PAPER FEED JAM Multi Feeder opening the cover CHECK FEEDER removing jammed paper and closing the cover and then turning the error display off When the problem occurs frequently go through the Troubleshooting Paper size error Notifies of incorrect size Check the paper in the EIN A paper feeding from the Multi Feeder Also check CHECK FEEDER i Multi Feeder to see if there was a feeding of multiple sheets Carry out the recovery printing by opening the cover and then turning the error display off Tray paper out Notifies of no paper state Load the paper in the of the Multi Feeder Multi Feeder mmmmmmmm Paper size in the tray being selected Interface Timeout Notifies of occurrence of Verify connection of interface timeout AOLE PCB and between the printer and square shaped the Multi Feeder connector Replace the square shaped connector if necessary Replace AOLE PCB Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 175 OKIDATA Servie papier E e JAM error Paper Input Jam Does pape
109. layed on the LCD 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 145 Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder When a problem occurs go through the troubleshooting according to the following procedure Problem occurs Problem displayed by Troubleshooting Carry out detailed the LCD message according to the LCD troubleshooting Status Massage List according to the see 4 3 1 Troubleshooting Flow 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 146 DATA Service Manual OKIPAGE20 Te Chapter D Second Third Paper Feeder The listing of the statuses and problems displayed in the form of messages on the LCD is provided in Table 4 1 Classification LCD Status LENTE Recover Method Jam error Notifies of occurrence of Check the paper in the HE jam while the paper is Second Third Paper being fed from the Feeder Carry out the Second Third Paper recovery printing by Feeder opening the cover removing jammed paper and closing the cover and then turning the error display off When the problem occurs frequently go through the Troubleshooting Paper size error AROR PAPER SIZE Notifies of incor
110. m Page 63 OKIDATA Service Manual OKIPAGE20 To enter the user maintenance mode turn the power supply ON while pressing the Menu key This mode uses the menu for function selection The user maintenance mode provides the following functions Menu reset All settings for Menu level 1 are reset to the factory default values The menus for all executable emulations including options are reset to the factory default values The operation mode starts automatically upon completion of resetting 2 Hex dump 5 The data received from the host is dumped in hexadecimal notation to the printer Printing is activated automatically when the received data exceeds one page If the received data is less than one page printing can be activated manually be pressing the Form Feed key after selecting the OFF LINE mode by pressing the ON LINE key Automatic activation of printing even when the received data is less than one page by selecting the Auto Eject function on the menu To exit from this mode is turning the power OFF Drum counter reset This function resets the drum life data when the user replaces the image drum unit The operation mode starts automatically upon completion of resetting Resource Save oet the storage area size of resource to be stored between PCL and Postscript Receive Buffer Size Set the receiving buffer 6 Operator panel menu disable This function is for enabling and disabling the operator panel menu
111. menu disable enable Page print disable enable e Transition to the operation mode occurs upon completion of resetting Note Do not change the default value of 1 5 8 16 they are the parameter for adjusting in the factory When AUTO B selected Writing inte the EEPROM pareemed into tha EEPROM i performed whan a ta Writing into tha EEPROM is performed when f Enter kay pressed 0 5 mm intervals Displayed with 1 mm intervals Wirking into tha EEPROM is parformad when the Enter kay is pressed Witing into tha EEPROM is performed when Enter key pressed Writing into tha EEPROM is performed when Te Enter kay pressed Writing into tha EEPROM is parfarmad when the Enter kay pressed Preis fh EF POS deo Same as 1 Wiring a EEPROM is parforeaed MES whan the Enter iay pressad Press the Manu kay dor Writing inta tha EEPROM is partormed EFTBL No 1 Na 3 No 2 whan tha Enter bey pressad Praes the Manu kay the Fraas tha Manu kay FUSA CHT Press ra Manu key Praes the m ume m A pu RESET Press the Manu key Frees the Jm ENGINE ENGINE QON LINE mene Press ihe Manu Press tha ON LINE iay INITIALIZING ON LINE XXX Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Excha
112. n board WES END Goto on the next page From on the preceding page AY Na Is the transfer rofer taling smoothhy No Is there any defective gear of the transfer roller Yes the defective gear Replace the transfer rofer linstall the fuser unit properly Na Is the image drum cartridge set properly No Set the image drm cartridge properly Na Does the paper sensor lever operate smoothhy No Heplace the paper sensor lever Yes Clean the paper sensar on the Power Supply Unit High Voltage Sae Fig 2 3 Sensor Layout Diagram the fuser unit installed properly the printer recovered No Replace the Power Supply Unit High Voltage YES END 2 4 Paper exit jam Does a paper exit jam error occur when the power is turned on YES sthe paper on the outlet sensor lever Yes Hemove the paper Does the outlet sensor lever operate smoothly Replace the outtet sensor lever Yes Clean the outlet sensor on the Power Supply Unit AC120V or 230V Fig 2 3 Sensor Layout Diagram 5 the printer recovered No the Power Supply Unit AC120V or 230V YES END s the face up stacker drawn out or pushed into the printer completely Draw the face up stacker out the printer completely or push it into the printer completely Yes 5 eect roller assembly installed propery Mo Install the eject roller assembly prope
113. necessary Replace LEX PCB 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 115 OKJDATA JAM error Duplex INPUT JAM 15 the leading edge of paper is fed in The Duplex unit Yes Has the leading edge of paper reached the Duplex sensor Yas Mo ls the Duplex in sensor lever operating normally Yes is the connection cord between the Duplex In sensor and the Board LEX connected properly Yes Does the connection cord a break Yes Replace the connection cord Connection Code Wire tha Duplex sensor FASO Photo Sensor OR Yee end Connect the connection cord properly Replace the Duplex sensor lever LEVER Sensor and SPRIMIG Sensor D Iv Na is the connection card between the Motor and the Baard L EX Yas OK Replace the GEAR Assy Yes end Replace the Motor Yes end Replace the Board LEX Connect the connection cord properly Does the square shaped connector between the Duplex unit and printer unit has any trouble ls there pin bend ar other troubles Yes isthe connection cord betweenthe Duplex unit andthe printer unit connected propery See Chapter 7 1 and Appendix C Chapter 5 1 Yes Ma Does the connection cord have a break Yes the connec
114. nector See section 3 3 6 3 Remove the motor bracket See section 3 3 7 4 Disengage latchs to remove the Feeding bearing 1 5 Disengage latchs to remove the Pulley feed 2 At this time the Gear feed 3 and Bush 4 can be removed simultaneously 6 Remove the Roller feed 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 bpx okidata com Page 139 DATA Service Manual OKIPAGE20 LB Chapter D Second Third Paper Feeder 1 Remove the Roller assy hopping and Roller assy feed See section 3 3 1 2 Remove the Roller feed See section 3 3 8 3 Unscrew a screw 1 to remove the Bracket joint 2 Spring joint 3 and Gear joint 4 4 Take away the E ring 5 to remove the Gear hopping 6 5 Disengage latchs to remove the Gear hopping 2nd 7 At this time the Bracket planet assy 8 can be removed simultaneously 6 Take away two E ring 9 and pull out the Knock pin 10 to remove the Gear 738 11 7 Remove two ADF bearing 12 Spring release 13 Bearing F 14 and Space hopping shaft 15 and remove the Shaft hopping 16 Guide roller 17 Lever release assy 18 and Bracket sub roller 19 8 Take away the Gear planet 728 20 to remove the Planet plate 21 9 Take away the Bracket spring sub 22 to remove the Spring sub 23 Copyright 1997
115. ng 143 4 2 Preparations for the Troubleshooting 144 4 3 Troubleshooting Method 145 ue 4 3 1 LCD Status Message List 146 mM 4 3 2 Troubleshooting Flow 147 5 0 Connection Diagram 148 5 1 Interconnection Diagram 149 9 2 PCB Layout 150 6 0 Parts List 151 E Multi Feeder 1 0 Outline 152 1 1 Functions 153 1 2 External View and Component Names 154 2 0 Mechanism Description 155 2 1 General Mechanism 156 2 2 Hopper Mechanism 157 Table of Contents Page 3 0 Parts Replacement 158 3 1 Precautions Concerning Parts Replacement 159 3 2 Parts Layout 160 3 3 Parts Replacement Methods 161 nore 3 3 1 Separator 162 3 3 2 AOLE PCB 163 ee 3 3 3 Square shaped connector 164 3 3 4 Hopping Motor 165 up 3 3 5 Planet gear 166 3 3 6 Roller B 167 TS 3 3 7 Roller 168 3 3 8 Mini pitch belt amp Feed roller 169 4 0 Troubleshooting 170 4 1 Precautions Prior to the Troubleshooting 171 4 2 Preparations for the Troubleshooting 172 4 3 Troubleshooting Method 173 ere 4 3 1 LCD Status Message List 174 4 3 2 Troubleshooting Flow 175 5 0 Connection Diagram 176 5 1 Interconnection Diagram 177 9 2 PCB Layout 178 06 0 Parts List 179 Page 1 OKIDATA All specifications are subject to change without notice PostScript Adobe and the PostScript logo are trademarks of Adobe Systems Incorporated registered in the U S A Times Helvetica and Palatin
116. ngagement with the plate FG BK 1 and lift out the roller heat assy 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 44 Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the feeder unit front See 3 3 10 2 Remove the roller assy feed 1 by unlocking a latch 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 45 rA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the stacker assy 1 See 3 3 6 2 Unplug the PC connector 2 and 2 LED cables 3 from the LED head 4 3 Open the hooks of the cover stacker 1 in the direction of the arrow and remove the LED head 4 4 Pull out the head spring 5 from the post Note Don t remove two LED cable 3 from the PC connector 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 46 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Pull out the case assy cassette 1 from the printer 2 Remove the ROLLER Ass Feed 2 and remove the ROLLER Assy Hopping
117. nge BPX for any updates to this material http opx okidata com Page 66 OKIDATA M E20 The corresponding area of the EEPROM is initialized for each event as shown Table 4 1 and Table 4 2 Table 4 1 EEPROM Initial Setting Range FAN Heiton Hangs Maintenance Menu Reset Systems Maintenance EEPROM Reset Engine Martenanoe Ergne Rese Fim Revision Check Error Power On i elol jofofo l Note 1 The items for each maintenance menu of the events are to be listed Table 4 2 Items Related to Each Maintenance Menu of EEPROM Reset Users Maintenance Menu Systems Engine Maintenance Menu Range Range Maintenance Menu Range Resource Save Enable Disable of Correction head type excluding the Total Number of time upon engine maintenance engine Menu Print reset Receive buffer Enable Disable of LED head drive time excluding the time Switching SIDM upon engine maintenance engine reset Emulation Enable Disable of Operator Panel Menu Function X Y DUP ADJUST 600 x 1200 dpi strobe time relative value excluding the time upon engine maintenance engine reset Print start position Print Shift to Left Based Cleaning Cycle _ Paper feed distance from the Duplex Unit Control parameter of each option tray Engine test HEN Paper Feed Command of Paper feed distance from each tray 2nd 3rd Front Trays Copyright 1997 Okidata Division of America Inc
118. nge BPX for any updates to this material http bpx okidata com Page 97 OKIDATA 2 1 General Mechanism 2 2 JAM Release Mechanism 2 3 Removing Installing Duplex 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 bpx okidata com Page 98 DATA E20 When the Duplex Unit receives an instruction for both sided printing from the unit the separator will be opened by the action of a solenoid within Duplex and the route will be shifted to the one into the Duplex after one sided printing of papers which are fed from the tray are completed At this time as the roller 1 rotates in the direction of arrow A a sheet is retracted in the rear of the cassette And then a given time later after the edge of the sheet passes through the IN SNS DUP the roller will reverse and the roller 1 rotates in the direction of arrow B and sending out the paper into the Duplex After that it passes though the roller 2 and 3 and is fed again into the unit given a another sided printing and ejected Haller 3 Front Roller 21 Rear Roller 1 Senso Sensor In retracting papers in sanding out paper 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 Pag
119. o are trademarks of Linotype AG and or its subsidiaries ITC Avant Garde Gothic ITC Zapf Chancery ITC Zapf Dingbats and ITC Bookman are registered trademarks of International Typeface Corporation HP and LaserJet are registered trademarks of Hewlett Packard Company Diablo 630 is a registered trademark of Xerox Corporation AppleTalk is a registered trademark of Apple Computer Inc LocalTalk is a trademark of Apple Computer Inc 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 2 OKIDATA ae This Service Handbook describes the field maintenance procedures for the OKIPAGE20 20n and 20DX This handbook was written for use by maintenance personnel Note however that the user should refer to the USER S MANUAL for operating instructions for the equipment 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 The OKIPAGE20 Series printers consist of control and engine blocks as the standard configuration See Figure 1 1 AC IN Printer Gorm abl gt venia Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner E
120. oltage Bae Fig2 3 Sensor Layout amami MO Whan the paper is fed in does tha paper mput jam occur YES is the paper being fed to atowe Tha sensor laver YES 15 the inde sensor lower operate morally HO The inlet sensor bayar YES Clean the sensor 1 on the power supply unit High Voltage or replace the power supply unit High Voltage See Fig 2 3 Sensor Layout Diagram MO Tha hoppani roller statt assy or paper cassette MO 5 the hopping roller shaft rotating YES Set the paper property MC 5 Iur Sieg meter hunning VES Flaplace the one way chitch gear on the hopping roller ahaft aasemihly MO isthe connector cable being connected praparhy aR Comed the connector cable property YES Check the coll resistance japprox of lhe stegpang motor bs il ree ihe stepping mator YES the Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 148 Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 5 1 Interconnection Diagram 5 2 PCB Layout Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 149 Service Manual
121. onnecting card of the operator pane connected PANEL c nnector of the Main board propery See chapter 7 1 1 Mo Connect the connecting cond of the operating panel te the PANEL connector of tha Main board property Yee fs the connecting cord dstectve Yes Heplace tha connecting cord ia the printer recovered Mo Replace the operator panel assembly Mo Peplace the Main board YES END Message be received through the parallel interface Is the parallal FF ENABLE in HOST VF iem of Mina 1 a da Mo Setihe Parallel ENABLE Yes 15 the host sel to the bickractianal communication Yee Set the parallel VF to the bidirectional commurecaton enable state DISABLE ENABLE in menu level 2 Mo 58 the parallel to the bidiractional communscation disabie state ENABLE DISABLE in menu level 2 ia the printer recovered Yet END Ne fs the connector of te parallel interlace cable connected to The painter prop ery Connect the connector of the parallel interface cable te the printer propedy Yes a there any detect in the cable broken or bent pin broken wire Yes Heplaoce parallel inteface cable Replace the Main board or ask the user to check the hardware and software at tha heat side Message cannot be received through the serial interface message EHROR HOST displayed 7 da 5 a ag Yas
122. ote Cable is not provided 3 Interface signal Pino Signal name Abbrewiation Sansi direction Functions 1 Frame Ground FG Frame greand 2 Trareimitted Data m i Trareumithac data 3 Cats AD data 5 To Send e Stay space level 5 hot hot connected 7 Signal Ground SG Signal ground 8 17 connected 14 50 i 19 ier 22 Data Haad DTE i PH Data Igrenina ready 21 26 hot connected e Connector pin arrangement 13 1 G LI OO CO C HDI OG D OO C 25 14 em from the cable side When the Ready Busy protocol is used for the buffer busy control method the busy signal can be set to Pin 20 DTR in the menu 4 Signal level e MARK polarity 3V to 15V LOGIC 1 e SPACE polarity 3V to 15V LOGIC 0 5 Interface circuit a Receiving circuit 751869 or equivalent o s iNPUT gt OUTPUT JW INPUT 12 b Sending circuit INPUT eureur 75188 or equivalent Note The above signal level is for the case where 3KW x 15pF is being connected to the terminal 6 Communications protocol a READY BUSY protocol b X ON X OFF protocol Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material
123. ove the Board PXC 14 10 Remove two Rubber foot 15 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 142 i Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 4 1 Precautions Prior to the Troubleshooting 4 2 Preparations for the Troubleshooting 4 3 Troubleshooting Method 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 143 i Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 1 Go through the basic checking items provided in the Operator Guide 2 Obtain detailed information concerning the problem from the user 3 Go through the checking in the conditions similar to that in which the problem 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 bpx okidata com Page 144 Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder 1 Display on the Operator panel The status of the problem is displayed on the LCD Liquid Crystal Display on the Operator panel Go through the appropriate troubleshooting procedures according to the messages disp
124. pper is a motion where papers are automatically sent into the printer one by one When papers are set to the cassette the feeding motion is activated by the hopping motor to send only a top paper which is caught on the brake shoe Printer 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 127 Ax Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder In this section the removing and installing procedure of assembly and unit in field are described Although this section describes the removing procedure the installing procedure is basically to conduct the removing one in reverse 3 1 Precautions Concerning Parts Replacement 3 2 Parts Layout 3 3 Parts Replacement Methods 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 128 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder 1 Parts replacements must be carried out by first turning the printer power switch off O and removing the High Capacity Second Third Paper Feeder from the printer 2 Do not disassemble the Second Third Paper Feeder if it is operating normally 3 Establish the extent of disassembly suitable for the purpose of the pro
125. prietary universal interface that provides the platform to connect various boards including those supplied by third party vendors such as the LAN connection expansion board and SCSI expansion board Any expansion boards compatible with this interface can be mounted on the Control board in the piggyback connector without modifying the program at the printer side The conceptual diagram of the OKI HSP interface is shown in Fig 2 2 For the electrical physical characteristics of the OKI HSP interface see the OKI HSP interface technical manual atanrk eic board An expareion board Fig 2 2 7 RAM module e Pinlayout e Basic specification Type 72 pins Standard SIMM 32 bits buss width Note EDO SIMM type cannot be used Access time 60ns 70 80ns 100ns Capacity 4 8 16 or 32MB Parity None 8 Flash ROM module e Pinlayout Board FSL e Basic specification Type 72 pins SIMM 32 bits buss width Access time 90ns Capacity 4 or 8MB 9 PS ROM module PS ROM module is BOARD MSM or BOARD FSL BOARD MSM consists of MASK ROM BOARD FSL consists of Flash ROM 8MB e Pinlayout BOAHD MSM or BOARD FSL e Basic specification Type 72 pins SIMM 32 bits buss width Access time 100ns Board MSM 90n Board FSL Capacity 6MB Board MSM 8MB Board FSL e Emulation PostScript Level 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved
126. print of high density pattern 2 Rough papers high temperature humidity and or snowy print of high density pattern 15 Cleaning cycle e Set the page interval to perform Cleaning Sequence Monu tey crt re seriei MENU MENU proc es garg HN L NE RESET Pags the Y Emery End of procestieg is paremad A mwj Em DAUMCNT Emor key nap cur 9 precessing RESET ResETWG Pra the SAG Sav do Menu key Pra REC BUFF do Pru Menu key h Writing into tha is pectormed eung PLL whan fea Enter key 3 pressad Ves ay Pees the dor Writing inia the EEPROM is porlormed E 14 when the Entor koy pressed 00 25 mm intervals n s Press the Y ADJUST Jor iey n mm L a Press the Menu key Writing into the EEPROM is parformad when the Enter key pressed 0 25 mm interval Preps the Press the Manu key Writing into tha EEPROM is performed when tha Enter key pressed Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 64 OKIDATA M E20 e system maintenance mode is set when the power is turned ON while pressing the Recover key e This mode adopts the menu for function selection
127. r Feeder The high capacity second third paper feeder only a top paper which is set in the cassette by a signal from the printer 1 Second paper feeder as an example is shown First of all the hopping motor rotates in the direction of arrow A Roller C rotates by way of idle gear on the same shaft on which the hopping gear is placed At the same time the planetary gear D shifts in the direction of arrow E and a sub roller gear and a sub roller on the same shaft rotate Roller C and sub roller make a paper hop Also the planetary gear G shifts in the direction of arrow H and Roller K rotates and when the length of sheet is legal 13 inch or more a hopping paper will be impinged to the regist roller within the printer When the length of paper is A4 or less hopping papers will be carried until the defined amount 2 When the length of paper is A4 or less the hopping roller rotates in the direction of arrow B next At this time the planetary gear G shifts in the direction of arrow to rotate Roller K and impinge the papers which are carried to the defined amount to the regist roller within the printer During the hopping roller is rotating Roller C is racing because it includes one way bearing At the same time planetary gear D shifts in the direction of arrow F and the sub roller gear and another sub roller on the same shaft won t rotate 3 In the third paper feeder when the length of paper is legal 13 inch or more and if the rotatin
128. r ram at the Inlet when the power is tumed on YES Is the paper located above the inlet sensor lever YES Hemove the paper NO 5 ihe inlet sensor lever operating normalhy the inlet sensor laver YES Clean the inlet sensor 1 on the power supply unit High Voltage or replace tha power supply unit High Voltage See Fig 2 3 Sensor Layout Diagram TNO When the paper is fed in does the paper input jam occur YES Is the paper being fed to above the inlel sensor lever YES ts the inlet sensor bever operating normally NO Replace the inlet sensor lever YES Clean the inlet sensor 1 on tha power supply unit High Voltage or raplace the power supply unit High Voltage See Fig 2 3 Sensor Layout Diagram NO Replace the feed roller roller A or reiler B MO Are the feed roller roller A and rolter B rotating YES Set the paper property MO fs the belt born YES Replace MO ls the pulse motor turning YES Replace planet gear s the connector cable being connected property NO Connect the connector cable properly YES Check the coil resistance approx 32600 of the stepping motor Is NO Replace the stepping motor YES Replace the ACLE PCB 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 176 OKIDATA Servie pap
129. r supply circuit This circuit generates the following voltages necessary for electro photographic processing from 30 V according to the control sequence from the control board When cover open state is detected 30 V supply is automatically interrupted to stop the supply of all the high voltage outputs 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 13 i Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description 2 3 1 Electro photographic process mechanism 2 3 2 Electro photographic process 2 3 3 Process operation descriptions 2 3 4 Revision of LED Head lllumination 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 14 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description This mechanism prints image data from the control board on the paper by electro photographic process The Figure 2 4 shows the layout of the electro photographic process mechanism Image Drum Unit LED HEAD Heat Assy Happina Moltar Sub Aether Figure 2 4 1 Image drum unit The image drum unit consists of a sensitive drum a charger and a developer The unit forms a toner image on the sensitive drum using a electrostatic latent im
130. rA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Open the stacker assy 1 and unscrew 2 screw 2 to remove the assy side L 3 2 Unscrew 2 screws 4 and remove the plate contact 5 and contact Assy 6 Note Don t deform the electrode plates of the contact assy 6 Unlock thie part before removing a 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 30 rA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the cover assy side L See 3 3 2 1 2 Remove the DC fan motor 1 by pulling out the connector of DC fan motor 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 bpx okidata com Page 31 rA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Disconnect the Interface cable 1 2 Open the stacker assy 2 unscrew 2 screws 3 and remove the cover side I F 4 3 Remove 2 screws 5 and flexible cable 6 to remove the operator panel assy 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 bpx okidata com Page 32 rA Service Manual
131. rect size Check the paper in the CHECK TRAY paper feeding from the 5 Third Paper Second Third Paper Feeder Also check to Feeder see if there was a feeding of multiple sheets Carry out the recovery printing by opening the cover and then turning the error display off Tray paper Error Notifies of no paper or Load the paper or paper paper cassettes state of cassette in the Second the Second Third Paper Third Paper Feeder mmmmmmmm Feeder Paper size in the tray being selected Interface timeout ERROR Notifies of occurrence of Verify connection of B1 interface timeout Board BBB and between the printer and square shaped the Second Third Paper connector Replace the Feeder square shaped connector if necessary Replace Board BBB 2or3 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 147 e Service Manual OKIPAGE20 OKIDATA Chapter D Second Third Paper Feeder e JAM error Paper Input Jam Doss paper jam at fa intel when thie power is Turned on YES 35 the paper located above he inlet sansor lever YES Remove ihe paper t The mile sensor hiti operating riommaty Replace the inlet sensor lever YES Clean ihe intel sengor 1 on the power supply unit High Voltage or replace tha power suppey unit High V
132. right 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 52 Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the frame main See 3 3 12 7 3 Squeeze the clamp part of the paper sensor lever 1 and remove the paper sensor lever 1 by pushing it upward from the lower side 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 53 Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the frame main See 3 3 12 7 3 Squeeze the clamp part of two inlet sensor levers 1 Remove the inlet sensor levers 1 by pushing them downward 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 54 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the frame main See 3 3 12 7 3 Unscrew 2 screws 1 and remove the BRACKE
133. rly Yes Replace the eject roller assembly ms EF Paper size error 15 paper of the specified size used E 4 ri of tre specihed Yes Do the inlet sense levar and paper widlh sensor laver operate smoothly Mo Replace the sensor lever or paper width sensor fever is the printer recovered No Clean the intet sensor 1 of paper width sensor on the Power Supply Unit High Voltage See 2 3 Sensor Layout Diagram ig the printer recovered Replace the Power Supply Unit High Voltage YES END YES END YES Deea the pullet sensor lever operate smoothly Mo Replace ihe outlet sensor lever ta the printer recovered Clean the elit sensor on The Power Supply Und AC 120 or 30 See Fig 2 3 Sensor Layout Diagram la the printer recovered the Power Supply Unit A C120V or 230W YES END YES END Yes Clean the inlet sensar t inlet sensor 2 and outlet sensor See Fig 2 3 Sensor Layout Diagram ia the printer recovered No Fleplace the Power Supply Unit High Veltagel YES Fuser unit error ERROR 71 ERROR 72 ERROR 73 Tum the power OF FAN Does a fuser unit enes occur immediately Yes laiha open or shorted Maasure the resistance between thermistor contacts About 220 kO at room temperature 26 C See chapter 7 3 for the measuring points Yes Replace the fuser unit a ca
134. roblem from the user 3 Go through the checking in the conditions similar to that in which the problem 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 bpx okidata com Page 172 OKIDATA Servie papier E 1 Display on the operator panel The status of the problem is displayed on the LCD Liquid Crystal Display on the operator panel Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD 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 173 OKIDATA Servie papier E When a problem occurs go through the troubleshooting according to the following procedure Probtem occurs Problem displayed by Troubleshooting Carry out detailed ihe LCD massage according ta the LCD troubleshooting Status Message List according to the se 4 3 1 Troubleshooting Flow see 4 3 2 4 3 1 LCD Status Message List 4 3 2 Troubleshooting Flow 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 174 OKIDATA HC The listing of the statuses and problems disp
135. s to this material http bpx okidata com Service Manual OKIPAGE20 Chapter A Centronics Parallel Interface OKIDATA Page 92 1 Connector e Printer side 36 pin receptacle Type 57RE 40360 830B D29 made by DDK or equivalent e Cable side 36 pin plug Type 57 30360 made by DDK or equivalent 2 Cable e Cable length 6 ft 1 8 m max a shielded cable composed of twisted pair wires is recommended for noise prevention Note Cable is not provided 3 Table of parallel signals Signal name signal 1 DATA STROGE PR 2 H DATA BIT r PR 10 ACXNOWLEDGE PR 11 PR 12 PAPER END PR 13 SELECT PR 14 AUTO FEED PR 15 16 17 CHASSIS GROUND 18 shy PR 19 DV 20 27 28 NN 22 JN 3 DV 31 INPUT PRIME PR 32 FAULT PR 33 oV 34 35 SEL IN PR e Connector pin arrangement Compatible Host Ck Data 1 LSB nck Pinch Panphtk Bury Pires Panph ck AckDatePeq nAck Select Ail xag WuloFb Signal Ground Chasse Ground cof Sippy ECendem Signal Gri Signal Ground Siga Signal Ground Signal nli n aull ner en Al High Laval 1284 fuir 1284 4 Signal level e LOW 0Vto 0 8 e HIGH 2 4 to 5 0 V 5 Interface circuit a Receiving circuit D
136. second Mo Is the AC cable connected properly No Connect the cable properly Mo is the message 16 columns lil display only on the top row shown in the LCD display Yes Heplace the Main board No Are the following voltages applied to the corresponding pins of the POWER connector on the Main board For the measuring points see Fig 6 1 Pin 23 8V Pin 24 BV Pins 19 20 30V Pins 9 12 17 18 OV Pins 13 14 45V Yes Remove the AC cable Set the POW switch to the ON position Measure the resistance between L and M pins of the AC inlet using a multimeter 1 there continuity between L and pins normal resis tance 554 For measuring points see Fig 6 2 Replace the fuse F2 or the Power Supply Unit AC120V or 230 Are POWER connector of the Main board and Connection cord Wire 26 pin connected properly Are connection cord wire and connector of the Power Supply Unit AC120V or 230V connected properly No Connect the connectors properly Are the following voltages applied to connector of the Power Supply Unit AC120V or 230V For measuring points see Fig 6 3 Pins 19 20 30V Pins 9 12 17 18 OV Pin 23 8V Pins 13 14 Pin 24V BV Mo Replace the Power Supply Unit AC120V or 230W Replace the Connection cord wire 26 pin ls the printer recovered Replace the Main board YES END From 1 2 on the preceding page 1 Yes
137. status Ircicates andina status operation iit Tras ITRAY 1 TRAY 2 TRAYS and FRONT MANUALFEEDER Cassette Ira iTi FRAY 1 2 TRAY 2 TX TARAY 35 mmimmimenmm Paper sze in the tay being selected LETFER EXECUTIVE LEGAL 14 LEGAL 13 44 SIZE A5 SIZE SHAE B5 SLE CON TO WOME COALS DL CS ENV CA Emulasion in operation PCL PS PPA and dddddct The mode at both sided ona sidad panting is SMPLEX Indicates affJina status dunng data recen rg or cutputsiig Indicate that red yet onnied data is rermamed m the buffer In a slate of wating for data FOAN FEED butten Catagory LCD stalus message Trouble of status Daily status indicate that te printer printing 5 that jab 5 designated and fva sire in which dala is rete ed ard anandoned unt the eempletion el a jobs Mean inal sheng to off fne in daba remaming state if you want in Fishing jab Press the RESET abandon the Gata bang processed execute the Frees fa ON LINE bution inscales that printer language des weed Dy Waring command Wamirg When GLEARABL WRAINGS has been selected in the ran this indication is by pressing Heccvar seiten Informs that the printer besomes power aave status heater of Tris Mermal operation ind
138. ster open error Thermiater shart error Sen Paper din Toner sensor BISA timeout cccumad between the preritar main uret and tha Sea chapter 6 5 2 operator timeout keiadi Ihe rsen iret and fna options tray end tray 3rd mult feeder timeout occured between the printer and tha Duplex Lint cater 6 5 2 A watchdog timer Ymen occurred Tum the power off then an Monece error Gouna went Note When replacing fa Main board asi tha EEPROM L i the Man ALAA AAA LX Monixe error argument error mounted on te replaced Main board Optional timecut error F3 Optional stalus System timer program erm BG program ema Te pragram emo program amar Categary LCD EADY ATTEHTION Trouble or status Hemedy message FARO LER Light off Bes An error occured m mue 1 Exception Code aeasaaae Error address code 1 3 Tum the power fen on D F Besenied Replace ine Main board SOARD AA Address Error Exception Lead instruction instructian Telch Address Error Exception 45 Error Exception Instruction Fetch obe When the instal the EEPROM mounted on the Mam baard Bus Error Exception Load shone System Excepsion Aasaved Instruction Extention Gopracessar Linusanie Excaplian Arifwnetic
139. t 1 Remove the cover assy side L See 3 3 2 1 2 Unplug the connectors 1 2 3 Unscrew 4 screws 3 and remove the heat assy 4 in the direction of the arrow by lifting the right side first Note e Asthe heat assy 4 becomes high temperature soon after the power is turned off start the work after it cools off sufficiently e Carry out a reset of the counter after the replacement See Section 4 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 42 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the guide assy eject See 3 3 13 But roller transfer feeder unit front plate FG F have not be removed 2 Remove the gear roller C 1 and bush 2 warp a part of the plate FG BK 3 Take off the carrier bearing 4 and remove the roller feed c 5 in the direction of the arrow Note Be careful not to deform a part of the plate FG BK 3 Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 43 FA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Remove the heat Assy See 3 3 14 2 Remove the lever back up release See 3 3 12 8 3 Unlock the e
140. t side a Centronics bi directional parallel interface This is an interface conforming to IEEE 1284 and provides either of unidirectional and bi directional communications according to each of the following communication modes e Compatibility mode Unidirectional communications from the host to the printer e Nibble mode This mode transmits 4 bit wide data from the printer to the host In this mode each 1 byte data is transferred in the form of two nibbles using ERROR BUSY FAULT and SELECT signal leads This mode can provide the bi directional operation in combination with the compatibility mode e ECP mode This mode provides the asynchronous bi directional interface and transmits and receives 1 byte data using eight data signal leads under the semi duplex control by the host When the power is turned on the compatibility mode is automatically selected The change to another mode from the compatibility mode is made through negotiation When the BI DIRECTION is set to ENABLE in the menu this change can be performed For the electrical physical characteristics of this interface see APPENDIX B b RS232C serial interface The following protocol is supported for the serial interface conforming to EIA RS232C e READY BUSY DTR HI or LO e X ON X OFF e RBST X ON For the electrical physical characteristics of the interface see APPENDIX B c OKI HSP interface Option This interface slot is an OKI pro
141. ter during printing The sensor layout diagram is shown in Figure 2 2 xit roller Outlet sensar Heat Tranier mler aper sensor Sean Sena Hopping Paper end senso Registration rater Intel 1 Paps leedng Figure 2 2 Function Sensing state Sensor 2 Inlet sensor 1 Detects the leading part of the paper and gives ON Paper exists the monitor timing for switching from hopping OFF No paper exists operation to feeding operation Monitors paper feeding situation and paper size based on the paper arrival time and running time Inlet sensor 2 Detects the paper width ON A4 or larger OFF Small than A4 Paper sensor Detects the leading portion of the paper Monitors Paper exists the paper feeding situation OFF No paper exists Outlet sensor Monitors the paper feeding and size according to ON Paper exists the time of arrival to and leaving the past the OFF No paper exists Sensor Paper and sensor Detects the end of the paper ON Paper exits OFF No paper exists Detects the lack of toner 4 The power supply unit consists of an AC filter circuit a low voltage power supply circuit a high voltage power supply circuit heater drive circuit and photosensors 1 Low voltage power supply circuit This circuit generates the following voltages 2 High voltage powe
142. the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 15 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description The electro photographic processing is outlined below Figure 2 5 shows the electro photographic printing process 1 Charging The surface of the image drum is uniformly charged with negative charges by applying a negative voltage to the charge roller 2 Exposure Light emitted from the LED head irradiates the negatively charged surface of the image drum The surface potential of the irradiated part of the image drum surface is lowered so that an electrostatic latent image associated with the print image is formed 3 Developing and toner recovery When the negatively charged toner is brought into contact with the image drum it is attracted to the electrostatic latent image by static electricity making the image visible At the same time the residual toner on the image drum is attracted to the developing roller by static electricity 4 Transfer When paper is placed over the image drum surface and a positive charge opposite in polarity to the toner is applied to the reverse side of the paper from the transfer roller the toner is attracted by the positive charge and is transferred to the paper As a result the toner image formed on the image drum is transferred to the paper 5 Temporary cleaning Residual toner that remains on the image
143. the destination according to the following table Destination Keys to be depressed ODA MENU OEL MENU OKI INT A MENU PAPER SIZE Australia etc OKI INT L MENU TRAY TYPE Singapore etc This function shall not be open for 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 bpx okidata com Page 70 Service Manual OKIPAGE20 OKIDATA Chapter 5 Periodic Maintenance As specified below the parts shall be replaced periodically replacement one replacement Regist Paper dust Regist Paper dust Heat Assy 200 000 Maintenance Kit Transfer Roller 20000 7 Maintenance Kit Back up Roller Assy 20 0 Maintenance Kit Feed Roller Assy 20000 7 Hopping Roller Assy 20 0 JMaintenaeKit Separation Frame Assy 200000 7 Maintenance Kit Note Maintenance Kit shall be replenished by user s calling to serviceman Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 71 i Service Manual OKIPAGE20 OKIDATA Chapter 5 Periodic Maintenance Remove any toner and dust Clean inside and around the printer with a piece of cloth when necessary Use the handy cleaner VACUUM for cleaning the printers interior Note
144. tion cord Core Assy DUPLE X la the connection between the solenoid and the Board LEX con nected properly Yes Replace SOLENOID OK Tes end No Replace the Board LEX Connect the connection cord properly No Connect the connection cord property No Replace the square shaped connector Connector IMSA 9714N 14A4 X JAM is there a paper on the Duplex in sensor lever No is the Duplex n sensor operating monmaliy Yes la the connection cord between the Duplex In sensar and the Board LEX connected properly Does the connection cord have braak Yes Replace the connection cord Connection Code Wire tha Duplex In sensor FX50 Photo Sensor OK end No the Board LEX Na Connect the connection cord properly No the Duplex In sensor lever LEVER Sensor D IN and SPRING Sensor D INT YES Remove the paper Duplex FEED JAM 2 Has a paper reached the Duplex Hear sensor is the connection cord between the clutch and the Baard LEX connected properly Yas Replace Ihe GEAR Assy OK Yes end No Replace the Board LEX No Connect the connection card property Yes thea Duplex Hear sensor operating normally Yes Heplace tha Board LEA Replace the Duplex Rear sensor lever LEVER Sensor F R and SPRING Sensor F R Duplex FEED JAM 3 Has a paper reached ihe Duplex Front sensor No 15 the connection cord between the clutch an
145. to this material http bpx okidata com Page 89 OKIDATA Qty Recommended Qty 28 POP uuu Maintenance POE iesassemmoz 0 TSP3 3 0 35 16 2 33 9 230G poem PP zi 1 E poor CP P001 po EMEN am P001 B 40299701 GUIDE ASSY Discharge 7 Hh B8 e hs 10 40033001 jSprinplnSenso 11 3PP4076 5082 Sensor Lever P001 E 5086 Toner Sensor Lever Adhesive 2001 13 40583801 LEVER Assy Out sensor 1 0 B 6 14 40324001 SPRING Out Sensor 1 B 6 JY 4 4076 5047 Lock Shaft Pho PPP Vm reser G001 17 40597001 CodeAssy Frot H ROLLER 1 9 fe 19 40301701 ROLLER Pressure 1 1 6 Jp 20 40614401 BearingAssy Registraion 2 2 6 12 21 40301801 GEAR Regst 1 B 6 ae oodi GEAR Nu qu i4 e 23 40323901 ROLLER Feed C 1 1 B 6 4 4076 3949 Bush EMT 2 25 40316301 GEAR Roller C 1 0 6 26 405241 GEAR ldleK 1 0 B 6 pf 27 40298201 1 0 3 6 28 40231 MOTOR Main 1 B 6 pf 29 40298801 PLATE Damper 1 1 B 6 30 403291 GEAR ldleA 1 0 B 6 p 31 4032051 GEAR ldleB 1 0 6 32 402201 GEAR IdleC 1 0 6 3 34 40299301 GEAR IdleE 20 0 29 35 409901 GEAR o B 6 o B je f o B je 4 o 1 6 40513501 BEARING Plast Fren 1
146. upward from the FRAME Hopping 28 11 Remove the Connection Cord Wire 25 and TR 23 11 14 R CORE 26 together 12 Remove two Photo Sensor 27 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 56 Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove Frame Main See 3 3 12 7 3 Remove PLATE Base and FRAME Assy Hopping See 3 3 28 5 4 Unscrew two screw 1 and then remove Guide Assy Cassette L 2 5 Remove SPHRING Sheet 3 and then remove LINK Sheet 4 and pull block 5 Pay attention the direction of hook of SPRING Sheet 3 6 Remove spring 6 and then remove cassette stopper 7 7 Remove screw 8 from LINK Sheet 4 and then remove link support 9 and Roller link 10 8 Remove Earth Plate L 11 and Plate Earth link 12 Copyright 1997 Okidata Division of America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 57 rA Service Manual OKIPAGE20 OKIDATA Chapter 3 Parts Replacement 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove Frame Main See 3 3 12 7 3 Remove PLATE Base and FRAME Assy Hopping S
147. ution Be careful to set the sensor plate properly when mounting AOLE PCB Sensor piate SD 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 164 OKIDATA HC 1 Remove the upper cover and remove the cover frame 5 see 3 3 1 1 to 4 2 Remove the AOLE PCB see 3 3 2 3 Remove the screw 1 and remove the square shaped connector 2 4 Using the connector remover remove the nylon cord 3 from the square shaped connector 2 Confirmation after assembly 1 The square connector 2 should be horizontal to the cover frame 5 2 The square connector 2 should be hooked on the connector spring 4 and move smoothly ee ee ee ee ee m ums m mg 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 165 OKJDATA Service Manual OKIPAGE2 1 Remove the upper cover see 3 3 1 1 to 3 2 Remove the AOLE PCB see 3 3 2 3 Remove two screws 1 then remove the hopping motor 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 166 OKJDATA Service Manual OK
148. xchange BPX for any updates to this material http bpx okidata com Page 4 OKJDATA The printer unit consists of the following hardware components Electro photographic processor Paper feeder Controller Operator panel Power sensor board Figure 1 2 shows the printer unit configuration ace up stacker Assy zy 2 tag t oen Uia Lower Hear E Ai p ine gt Tun 2 i gh 22 EI 2 me 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 Servico apiet 1 Coniguaion The options below are available for use with the OKIPAGE20 Series Printer They are sold separately from the printer unit 1 Multi Feeder 4 Flash ROM module 72 pin SIMM 4MB 8MB 72pin SIMM 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 OKIDATA Page 6 Service Manual OKIPAGE20 Chapter 1 Configuration Type External dimensions excludes protruding portion Weight Developing method Exposing method Paper used Desktop Height 13 0 331 mm Width 14 4 336 mm Depth 18 2 378 mm 42 lbs 19 kg If Installed Duplex 47 lbs 21 3 kg Dry electrophotography
149. y order diagram below High Capacity Second Third Paper Feeder Roller assy hopping Roller assy feed 3 3 1 Cover front assy 3 3 2 Board BBB 3 3 3 Lever paper end Lever paper near end 3 3 4 Motor 3 3 5 Connector IMSA 9714N 14B Connector IMSA 9714N 14A 3 3 6 Frange Pulley Pulley Idle Mini Pitch belt Plate Earth shaft Gear double Tray switch assy 3 3 7 Roller feed 3 3 8 Bracket sub roller 3 3 9 Frame side L 3 3 10 Frame side R 3 3 11 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 131 DATA Service Manual OKIPAGE20 Chapter D Second Third Paper Feeder 1 Remove the Case assy cassette 1 2 Disengage latchs to remove the Roller assy hopping 2 3 Disengage latchs to remove the Roller assy feed 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 bpx okidata com Page 132 DATA Service Manual OKIPAGE20 ees Chapter D Second Third Paper Feeder 1 Unscrew two screws 1 to remove the Cover front assy 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
150. y updates to this material http bpx okidata com Page 21 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description The sensor interlocked with the lever at the paper outlet to the stacker detects a stacker full state about 250 sheets and stops printing of the ensuing pages 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 22 te Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description The four tab pieces are driven according to the setting position of the paper guide through the cam interlocked with the paper guide of the paper cassette When the paper cassette is inserted into the printer the state of the tab pieces is detected by the microswitch to recognize the paper size State of Microswitches Paper size 1 1 1 Jeter _0 1 0 1 1 CV or ot ava 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 23 Service Manual OKIPAGE20 OKIDATA Chapter 2 Operation Description PostScript ROM module is mounted SIMM socket FSIMM1 The PostScript ROM module consists of program font ROM s an EEPROM 1 Program font ROM s The program font ROM s store the PostScript

Service Manual - OKIPAGE20 OKIPAGE 20 / OKIPAGE 20 DX

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