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OKIPAGE 16n Led Printer

1. 1 Turn the AC power supply switch off Unplug the AC power cord from the outlet 2 Remove the manual feed hopper Assy see 3 3 4 53 3 Remove the side cover R see 3 3 5 53 4 Remove the front feeder roller Assy See 3 3 12 1 to 3 3 5 Remove the paper supply guide A see 3 3 13 1 to 10 i 6 Remove idle gear 1 and then remove the right side front feeder cam 2 release lever R 3 and spring 4 At this time Knock pin 5 and bearing F 6 are also removed Be careful not to lose them Do not mix these parts with those from the left side of Assy 7 Pull out the front feeder shaft 7 toward the left and then remove front feeder roller Assy 8 8 Remove knock pin 9 and then remove front feeder cam on the left L side release lever L A and spring B At this time the bearing F C on the left L side is also removed Do not mix these parts with those from the right side of Assy Note 1 Hopping roller orientation when removed from shaft 2 Be sure sensor arm swings freely after re assembly 3 Be sure that during re assembly both feeder cams 2 and are facing the same direction Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 40 AW iT AT A Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 15 Hopping motor 1 Turn the AC pow
2. 2 Remove the main chassis unit See 3 3 17 43 3 Release the lock and remove paper end lever 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 56 OKIDATA Service Guide OKIPAGE16n Pe Chapter 3 Parts Replacement 3 3 31 Guide rail L Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 43 3 Remove the insulator see 3 3 29 4 Remove screw 1 and then remove base plate 2 5 Remove two screws 3 and then remove guide rail L Assembly 4 6 Remove cassette lock spring 5 and then remove bias link 6 and pull block 7 Pay attention the direction of hook of cassette lock spring 5 7 Remove spring 8 and then remove cassette stopper 9 8 Remove screw 0 from bias link 6 and then remove link support 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 57 at Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 32 Guide rail R Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 43 3 Remove the insulator see 3 3 29 4 Remove s
3. In D amp Operation Tum on the POWER switch while pressing FORM FEED and ENTER key Press dor key until 14 is displayed Press ENTER key Press MENU key Press MENU key Press the ON LINE key After initializing process is completed the printer enters into the operation mode and the setting operation is finished Do not tum the power off until the printer enters into the on line state LCD display after operation D HEA Yo 17 LED HEAD No 14 LEDHEAD Parameter 14 is No 14 set to EEPROM gt is displayed on Ls 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 71 OKIDATA r e 4 2 2 Resetting the fuser counter Operation LCD display With the ENTER and FORM ENG MNT FEED keys pressed turn the printer power on Press the MENU key 15 times Press the ENTER key to reset the fuser count After the initializing process is completed the printer enters into the operation 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 72 OKIDATA Banais Das DAEN 4 2 3 Destination setting The desired destination can be set by turning the power on while depressing
4. 5 Temporary cleaning Residual toner that remains on the image 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 electrophotographic process timing chart Paper see a lage data Face down Power supply LED head LEDSTE Feed start IN Sensor OFF Paper Sensa Out Sensor Feed Stop Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 15 at Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 4 3 Process operation descriptions 1 Hopping Feeding from the first tray and the front feeder are effected by a single hopping motor in the mechanism shown below Hopping Motor Front Feeder First Tray Turning the Hopping motor in the a direction drives the hopping roller of the first tray Turning the Hopping motor in the b direction drives the Hopping roller of the front feeder Both hopping gears contain one way bearings so that turning each of these gears in reverse direction will not be transmitted to the corresponding roller Hopping Motor One way Clutch Gear B Hopping Roller Front Feeder Hopping Roller First Tray One way Clutch Gear
5. Partner Exchange BPX for any updates to this material http opx okidata com Page 28 C Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 3 DC fan motor 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover L Assembly see 3 3 1 1 to 4 ij 3 Unplug the connector of the DC fan motor 1 and remove the 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 29 C Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 4 Manual feed hopper Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Open manual feed hopper Assembly 1 Disengage the lower portion of this Assembly 3 Hold manual feed hopper Assembly 1 vertically and remove the left and right levers 2 with a downward motion 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 OKIDATA Service Guide OKIPAGE16n l Chapter 3 Parts Replacement 3 3 5 Side cover R operator panel Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove interface cable 1 3 Open stacker cover 2 Remove two screws 3
6. Remove the rear cover see 3 3 1 i 3 Remove the side cover R see 3 3 5 lt 4 Remove the side plate R see 3 3 6 1 to 6 i 5 Disconnect the engagement of backup release lever 1 with the protrusion on the light side surface on the right side of the stacker cover 6 Remove screw 2 and washer 3 Remove two claws Remove stacker cover Assembly 4 at this time the damper arm 5 is also removed eae pee Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 33 wi C Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 8 Damper 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the damper arm see 3 3 7 i 3 Remove two screws 1 and then remove two dampers 2 This hole is elongated When replacing damper be sure elongated hole is to rear of printer Nes _ Ths hole is round Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 34 OKIDATA Service Guide OKIPAGE16n Pe Chapter 3 Parts Replacement 3 3 9 Stacker full sensor Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the stacker cover Assembly see 3
7. Turn the AC power switch off Unplug the AC power cord from the outlet 2 Open stacker cover 1 3 Remove PC connectors 2 and two LED cables 3 from LED head 4 4 Push the hook on the left side of stacker cover 1 in the direction of arrow and remove LED head 4 Take care not to lose head springs 5 5 Pull out the head spring 5 from the post Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 60 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 35 Separator Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Pull out the paper cassette Assembly 1 from the printer 3 Release two locks and remove separator Assembly 2 At this time leaf spring 3 and coil spring 4 are also removed Be careful not to lose these springs 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 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 36 Transfer roller 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Open stacker cover 1 3 Lift the left side of the gear TR 2 and release the lock Remove gear TR 2 and transfer roller 3 At this ti
8. for any updates to this material http opx okidata com Page 9 G Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 1 Main Control Board BOARD COM The control board consists of an one chip CPU LSls program font ROM s DRAM s 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 internal bus 32 bit external bus 32 MHz clock that incorporates an RISC CPU and its peripheral devices and has the following functions Built in device po Function O Chip select controller Control of ROM DRAM and I O device Bus controller DRAM controller DRAM controller ransfer of image data from DRAM to OST LSI Parallel interface controller Control of Centronics parallel interface Timer Generation of various control timing Monitoring of paper running and paper size Serial I O port Control of operator panel EEPROM and options 7 Inputting outputting of sensor signal and motor signal Option I O interface Control of OKI HSP interface 2 Program font ROM s The program font ROM s store the HP IV emulation program and various types of font MASK ROM is used as the program font ROM s 3 DRAM s 2 Megabyte DRAM 4 Mbit DRAM x 4 is mounted as resident memory to be used for storing the program and providing various buffers This DRAM is expandable up to 66 Mbytes by adding expansion memory SIMMs This DRAM provides the areas shown
9. http bpx okidata com Page 23 wt Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 1 Precautions for Parts Replacement 1 Before starting parts replacement remove the AC cable and interface cable a Remove the AC cable in the following procedure i Turn off o the power switch of the printer ii Disconnect the AC inlet plug of the AC cable from the AC receptacle iii Disconnect the AC cable and interface cable from the printer b Reconnect the printer in the following procedure i Connect the AC cable and interface cable to the printer ii Connect the AC inlet plug to the AC receptacle iii Turn on I the power switch of the printer H 2 Do not try disassembly as long as the printer is operating normally 3 Do not remove unnecessary parts try to keep 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 orginal positions 7 When handling ICs 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 Table 3 1 shows the tools required for field replacement of printed circuit boards and units Table 3 1 Service Tools XX Copyri
10. 1 to 3 5 3 Unplug connector 1 4 Remove four screws 2 and then remove fusing Assembly 3 per ry 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 OKIDATA Service Guide OKIPAGE16n Chapter 3 Parts Replacement 3 3 22 Fuser pressure roller 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit See 3 3 17 3 Remove the fusing Assembly see 3 3 21 43 4 Remove the fuser pressure roller release lever See 3 3 19 5 5 Remove two screws 2 and release three locks on the fusing guide Remove the fusing guide 1 by pushing it upward from the lower side 6 Release the engagement with earth plate L BK 3 Lift and remove fuser pressure roller 4 At this time two fuser pressure roller bearings 5 and two bias springs 6 are also removed Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 48 i Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 23 EP lock shaft 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 43 3 Remove screw 1 Turn EP lock level L Assembly 2 i
11. 2 Parts Layout 24 3 3 How to Change Parts 25 3 3 1 Rear cover side cover L Assembly face up stacker 26 Assembly and I F cover Assembly 3 3 2 Contact Assembly 27 3 3 3 DC fan motor 28 3 3 4 Manual feed hopper Assembly 29 3 3 5 Side cover R operator panel Assembly 30 3 3 6 Earth plate BK R BOARD PSBA BOARD COM 31 3 3 Stacker cover Assembly damper arm and washer 32 3 3 8 Damper 33 3 3 9 Stacker full sensor Assembly 34 3 3 10 Cable cover cable guides A and B 35 3 3 11 Eject roller Assembly 36 3 3 12 Paper supply guide D 37 Table of Contents Page 3 3 13 Separator F 38 3 3 14 Front feeder roller Assy 39 3 3 15 Hopping motor 40 3 3 16 Front feeder paper end sensor 41 3 3 1 Main chassis unit 42 3 3 18 Registration roller 43 3 0 19 Drum motor 44 3 3 20 Idle gear 45 3 3 21 Fusing Assembly 46 3 3 22 Fuser pressure roller 47 0 0 20 EP lock shaft 48 3 3 24 Hopping roller Assembly 49 3 3 25 Outlet sensor lever 50 3 3 26 Toner sensor lever 51 3 2 2 Paper sensor lever 52 3 3 28 Inlet sensor lever 53 3 3 29 Power Supply Board Insulator 54 3 3 30 Paper end lever 55 3 3 31 Guide rail L Assembly 56 3 3 32 Guide rail R Assembly 57 3 3 33 Cover Frame 58 0 0 04 LED head 59 3 8 35 Separator Assembly 60 3 3 36 Transfer roller 61 4 Adjustment 4 ADJUSTMENT 62 4 1 Maintenance Modes
12. 3 7 i 3 Remove four screw 1 Remove stacker mount 2 by releasing the tabs at position 2A 4 Remove stacker full sensor Assembly 3 by releasing spreading the plastic tabs on each side of sensor Assembly 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 opx okidata com Page 35 j Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 10 Cable cover cable guides A and B 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the stacker cover Assembly see 3 3 7 _43 3 Remove two screws 1 release tabs at position 1A Remove cable cover 2 cable guide A 3 Note Use care when replacing cable cover Do not pinch crimp or cut cables or protective sheet Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 36 ALIR AT Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 11 Eject roller Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the rear cover see 3 3 1 43 3 Remove the side cover R see 3 3 53 4 Remove the side plate R see 3 3 6 1 to 6 55 5 Remove the stacker cover Assembly see
13. A a Hopping 1st tray 1 Rotating the pulse motor in the direction a clockwise CW direction drives the hopping roller of the first tray to advance the paper until the inlet sensor turns on At the same time the one way clutch gear B also rotates However the hopping roller of the front feeder will not rotate due to the one way bearing 2 After turning on the inlet sensor the paper advances further by a predetermined length until it hits the registration roller The skew of the paper can thus be corrected One way Cluich Gear B Registration Roller Hopping Roller tst Tray b Hopping front feeder if Rotating the pulse motor in the direction b counterclockwise CCW direction drives the hopping roller of the front feeder to advance the paper until the inlet sensor turns on At the same time the one way clutch gear A also rotates However the hopping roller of the 1st tray will not rotate due to the one way bearing A cam to push down the front feeder plate is attached on each of the ends of the hopping roller shaft These cams push down the front feeder plate when the hopping operation is not performed so as to facilitate the setting of paper into the tray A microswitch is provided under the front feeder plate to detect that the front feeder plate is at the lower position When the front feeder plate is at the lower position this microswitch causes the motor to stop Front Feeder Plate Registrat
14. And Functions 63 4 1 1 User maintenance mode 64 4 1 1 User maintenance mode menu system 65 4 1 2 System maintenance mode 66 4 1 3 Engine maintenance mode 67 4 1 4 EEPROM initialization 68 4 2 Adjustment When Replacing A Part 4 2 1 Setting of LED head drive time 4 2 2 Resetting the fuser counter 4 2 3 Destination setting 5 Periodical Maintenance 5 1 Periodic Part Replacement 5 2 Cleaning 0 2 1 Cleaning of LED lens array 6 Troubleshooting Procedures 6 1 Troubleshooting Tips 6 2 Points to Check before Correcting Image Problems 6 3 Tips for Correcting Image Problems Table of Contents Page 6 4 Preparation for Troubleshooting 79 Operator Panel Display 80 6 5 Troubleshooting Flow 81 6 5 1 LCD Status Message Trouble List 82 6 5 2 LCD message troubleshooting 83 iR 1 The printer does not work normally after being turned 84 on EN 2 JAM error 85 ees 2 1 Paper input jam 1st tray 86 TARTE 2 2 Paper input jam front feeder 87 MEE P 2 3 Paper feed jam 88 AEA 2 4 Paper exit jam 89 RA 3 Paper size error 90 rane 4 Fuser unit error ERROR 71 ERROR 72 ERROR 91 73 ears 5 I F time out between printer and optional tray ERROR 92 81 iene 6 I F time out occurs between the printer and the operator 93 panel ERROR 80 ee 7 Communication with the host cannot be performed via 94 the parallel interface een 8 Data cannot be received through the OKI HSP interface 95 ON 9 Synchronous serial I O e
15. OKIPAGE16n OKIDATA Chapter 5 Periodical Maintenance 5 2 1 Cleaning of LED lens array 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 76 te Service Guide OKIPAGE16n OKIDATA Chapter 6 Troubleshooting Procedures 6 1 Troubleshooting Tips 1 Check the basic check points covered in the user s manual 2 Gather as much information on the problem from the 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 77 Service Guide OKIPAGE16n OKIDATA Chapter 6 Troubleshooting Procedures 6 2 Points to Check before Correcting Image Problems 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
16. Remove I F cover Assembly 4 4 Remove two screws 5 and flexible cable 6 use care to not damage flexible cable Remove operator panel Assembly 7 5 Open manual feed hopper Assembly 8 Remove three screws 9 and then remove side cover R 10 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 31 rw F Ae Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 6 Earth plate BK R BOARD PSBA BOARD COM 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove side cover R see 3 3 5 3 3 Remove a screw 1 Remove BOARD PSBA 2 OKIPAGE16n PS only 4 Remove five screws 3 and seven connectors 4 Remove BOARD COM 5 5 Remove two screws 6 Remove IC card cover 7 6 Remove four screws 8 Remove side plate R 9 by pulling up and out on top part of plate 7 Remove the claws and then remove Earth plate BK R 10 BOARD PSBA 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 32 OKIDATA Service Guide OKIPAGE16n a Bif Chapter 3 Parts Replacement 3 3 7 Stacker cover Assembly damper arm and washer 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2
17. 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 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 by 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 Exit from this mode by turning the power OFF 3 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 4 Operator panel menu disable This function is for enabling and disabling the operator panel menu functions Menu 1 Menu 2 Tray Select Copies and Paper Size 5 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 6 Y ADJUST e This function is used to adjust the printing start position within the range of 2 mm in 0
18. idle gear H 2 is also removed 6 Remove spring 3 and then remove pressure release lever 4 Be careful do not lose or damage spring 7 Remove EP lock spring 5 and then remove ED lock lever 6 8 Release two latches and remove motor Assembly 7 9 Remove two screws 8 and then remove drum motor 9 and heat sink 10 Remove two screws and then remove registration motor 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 opx okidata com Page 45 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 20 Idle gear 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit See 3 3 17 3 Remove the motor Assembly see 3 3 19 1 to 8 23 4 Remove three screws 1 and then remove motor bracket B 2 5 Remove idler gear E 3 idle gear D 4 idle gear B 5 idle gear C 6 idle gear A 7 and two resist idle gears 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 46 i Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 21 Fusing Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover L Assembly see 3 3 1
19. in the following table Memory area Memory capacity setting el pansion RaM S Receive buffer Stores temporarily the data Enable Expandable received from the host interface Page buffer Adds print information to the Expandable analyzed receive data and stores the resulted data DLL macro buffer Stores soft fonts and macro data Expandable nt cache buffer Stores bit map fonts generated by Enable Expandable the font 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 Adjustment parameters LED head drive time print start position etc 5 LSI MBCE31701 040FP BND This LSI is used as a peripheral device of the CPU and performs smoothing compensation OST of print image data In addition it transfers serially bit image data for each dot line to the LED head 6 Host interface This printer has the following interfaces to the host Centronics bi directional parallel interface e OKI HSP interface Option e LocalTalk interface Option PostScript Version 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 int
20. 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 Registration 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 registration roller 4 Drum motor This drum motor is a pulse motor of 48 steps rotation that is two phase excited by the signal from the control board and is the main motor of this mechanism 5 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 6 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 185 188 C 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 immediately Copyright 1997 Okidata Division of OKI Am
21. piggyback board without modifying the program at the printer side The conceptual diagram of the OKI HSP interface is shown in Fig 2 2 Network etc Fig 2 2 7 RAM module 1 36 af Te e Pin layout e Basic specification Type 72 pins SIMM 82 bits buss width Access time 60ns 70ns 80ns 100ns Capacity 1 2 4 8 16 or 32MB Parity None 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 10 G Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 2 Power Supply Board The power supply 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 Logic circuit supply voltage Motor and fan drive voltage and source voltage for high voltage supply Local Talk Line voltage 2 High voltage power supply circuit This circuit generates the following voltages necessary for electrophotographic 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 Output Voltage CH s 4 30 KV Voltage applied to charging r
22. sensor lever 1 Remove the outlet 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 opx okidata com Page 51 F te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 26 Toner sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit See 3 3 17 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 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 52 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 2 27 Paper sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit See 3 3 17 3 Squeeze the clamp part of the paper sensor lever 1 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 opx okidata com Page 53 F te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Rep
23. 25 mm steps in the Y direction 7 SETTING e This function is used to improve print quality 2 Rough thick paper Low temperature humidity and or blotchy faded print appeared 0 Normal media environmental conditions Rough papers high temperature humidity and or snowy print of high density pattern 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 65 OKIDATA i err a User maintenance mode menu system Alter the emd see ON LINE End of processing is perforeed ae lhl ae iste the EEPROM is performed cette cia ea eel Writing imo the EEPROM is perlormed when the Enter key E pressed 0 25 rant intervals l ek ale ae when the Emer key is pressed 135 mane Whiting imo the EEPROM is pertormed when the Enbar key is possed INITIALIZING 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 66 OKIDATA raa aE 4 1 2 System maintenance mode The system maintenance mode is set when the power is turned ON while pressing the Recover key This mode adopts the menu for function selection The system maintenance mode is provided with the listed functions 1 Page count display The total number of pages counted
24. 3 3 7 43 6 Release the latch on the right side of eject roller Assembly 1 Lift up and remove the eject roller Assembly 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 37 AW aT A Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 12 Paper supply guide D 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover R see 3 3 5 i 3 Remove five screws 1 Lift up and remove front feeder roller Assembly 2 4 Lift up and remove paper supply guide D 3 At this time two bias rollers 4 and bias spring 5 are also removed Be careful not to lose them Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 38 FA Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 13 Separator F 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the manual feed hopper Assembly see 3 3 4 43 3 Remove the side cover R see 3 3 5 4 4 Remove the front feeder Assembly see 3 3 12 steps 1 to 3 4 Make a diagram of wire locations and routing 5 Remove two screws 1 and then remove the inner cover 2 At this time the cover lock le
25. AGE16n PS consists of control and engine blocks as the standard configuration See Figure 1 1 In addition the following options are also available LocalTalk a with PS model only Figure 1 1 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 3 Service Guide OKIPAGE16n OKIDATA Chapter 1 Configuration 1 2 Printer Configuration The printer unit consists of the following hardware components e Electrophotographic processor e Paper feeder e Controller e Operator panel e Power Supply board Figure 1 2 shows the printer unit configuration Crane ators Rear Cover Eject Roller Assy Slide Cover L Assy Figure 1 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 4 OKIDATA eSa 1 3 Optional Configuration The options below are available for use with OKIPAGE16n OKIPAGE16n PS They are sold separately from the printer unit 1 Multi Purpose Feeder 3 RAM module 72 pin SIMM 1 MB 2 MB 4 MB 8 MB 16 MB 32 MB e 16 MB RAM module e 8MB RAM module Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this mate
26. America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 67 OKIDATA a 4 1 3 Engine maintenance mode 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 e The method for exit from this mode depends on the setting e The engine maintenance mode is provided with the following functions 1 Head drive time setting e Sets the drive time of the LED head 2 Setting of Head drive timing compensation while OST is on e This function sets head drive timing compensation level while OST is on at 600 DPI mode 3 Compensated head type setting e This function sets type of the compensated head 4 Printing start position setting e Sets the printing start position 5 Drum count total display e Displays on the LCD the total number of drum revolutions in the unit counted at the engine 6 Drum count display e Displays on the LCD the total number of EP drum revolutions counted at the engine 7 Setting of standard tray paper feed length e This function sets the paper feed length of standard tray paper 8 Setting of front feeder paper feed length e This function sets the paper feed length of the front feeder 9 Setting of High Capacity Second Paper Feeder paper feed length e This function sets the paper feed
27. GE16n OKIDATA Chapter 1 Configuration 1 5 2 Warning Label The warning label is affixed to the portion which may cause bodily injury Follow the instructions on warning labels during maintenance Ga tT iH aT ATTENTE 2 HCE THARA THE i ATENCA LTA TEPER ATURA EMH AD LTE TEUPER ATURE 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 Aw Fae Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 OPERATION DESCRIPTION OKIPAGE16n OKIPAGE16n PS consists of a main control board a power supply board a driver board an operator panel and an electrophotographic process mechanism The control board receives data through a host I F decodes and edits the data and stores the edited data in 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 the LED head in units of one dot line The electrophotographic process mechanism prints data on paper The operator panel is used for operations and status display Fig 2 1 shows an OKIPAGE16n OKIPAGE16n PS block diagram Page 8 Figure 2 1 OKIPAGE16n OKIPAGE16n PS block diagram Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX
28. 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 78 i Service Guide OKIPAGE16n OKIDATA Chapter 6 Troubleshooting Procedures 6 3 Tips for Correcting Image Problems 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 79 DATA Service Guide OKIPAGE16n OKI Chapter 6 Troubleshooting Procedures 6 4 Preparation for Troubleshooting Operator Panel Display 4 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com
29. Page 1 Service Guide OKIPAGE16n Chapter 0 About This Manual OKIDATA Service Manual OKIPAGE 16n LED Page Printer Adobe Acrobat printable reference copy of the OKIDATA Service Training Manual 09 17 97 Note This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi which is ideal for printing but does not view on most displays well 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 Guide OKIPAGE16n 0 About This Manual Front Cover 1 1 Configuration 1 1 System Configuration 2 1 2 Printer Configuration 3 1 3 Optional Configuration 4 1 4 Specification 5 1 5 Safety Standards 6 1 5 2 Warning Label 7 2 Operation Description 2 OPERATION DESCRIPTION 8 2 1 Main Control Board BOARD COM 9 2 2 Power Supply Board 10 2 3 Relay Driver Board AOLC board 11 2 4 Electrophotographic Process 12 2 4 1 Electrophotographic process mechanism 13 2 4 2 Electroohotographic process 14 2 4 38 Process operation descriptions 15 2 5 Paper Jam Detection 16 2 6 Cover Open 17 2 Toner Low Detection 18 2 8 Stacker full Detection 19 2 9 Page Size Detection 20 2 10 PostScript Board BOARD PSBA Optional 21 3 Parts Replacement 3 PARTS REPLACEMENT 22 3 1 Precautions for Parts Replacement 23 3
30. SHOOTING 137 ees 4 1 Precautions Prior to the Troubleshooting 138 PRP 4 2 Preparations for the Troubleshooting 139 N 4 3 Troubleshooting Method 140 See 4 3 1 LCD Status Message List 141 NEEE 4 3 2 Troubleshooting Flow 142 0 Connect Diagram 143 ee 5 1 Interconnection Diagram 144 ee 5 2 PCB Layout 145 6 Parts List 146 C Multi Feeder Maintenance Preface 147 1 Outline 148 1 1 Functions 149 1 2 External View and Component Names 150 2 Mechanism Description 151 2 1 General Mechanism 152 2 2 Hopper Mechanism 153 3 Parts Replacement 154 3 1 Precautions Concerning Parts Replacement 155 3 2 Parts Layout 156 Table of Contents Page 3 3 Parts Replacement Methods 157 aes 3 3 1 Separator 158 ee 3 3 2 AOLE PCB 159 fees 3 3 3 Square shaped connector 160 sete 3 3 4 Hopping Motor 161 eee 3 3 5 Planet gear 162 odors 3 3 6 Roller B 163 er 3 3 7 Roller A 164 eee 3 3 8 Mini pitch belt amp Feed roller 165 4 Troubleshooting 166 4 1 Precautions Prior to Troubleshooting 167 4 2 Preparations for Troubleshooting 168 4 3 Troubleshooting Method 169 eee 4 3 1 LCD Status Message List 170 motes 4 3 2 Troubleshooting Flow 171 5 Connection Diagram 172 9 1 Interconnection Diagram 173 5 2 PCB Layout 174 6 Parts List 175 D Localtalk Serial Interface OKIPAGE16n PS Only Localtalk Serial Interface OKIPAGE 16n PS Only 176 Page 2 OKIDATA Sore E O 1 1 System Configuration OKIPAGE16n OKIP
31. at the engine is displayed on the LCD 2 Page count printing enable disable 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 The rolling ASCII pattern is printed continuously for various engine tests Press the ON LINE key to cancel this mode 4 EEPROM reset All EEPROM areas including Menu level 2 are set to the factory default values The following items are excluded Head drive time setting Fine adjustment of printing start position Standard tray paper feed amount setting 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 5 HSP ERROR recovery Select HSP ERROR recovery function either recover or stop 6 HSP ERROR count Display total HSP ERROR count 7 HSP ERROR count reset e Reset the HSP ERROR counter 8 SIDM enable disable e If it s selected disable cannot select SIDM emulations by Menu Jor by W into the EEPROM is performed P 22 ame penes Press the Press the Enter key CONTNUOUS ON LINE key PRINT 5 PRINTING After the end af processing f a a gt ON LINE HSP ERR i RESETNG N LINE INITIALIZING ON LINE Copyright 1997 Okidata Division of OKI
32. crew 1 and then remove base plate 2 5 Remove two screws 3 and then remove guide rail R Assembly 4 6 Remove cassette lock spring 5 and then remove bias link 6 and pull block 7 At this time earth plate 8 is also removed Pay attention the direction of hook of cassette lock spring 5 7 Remove spring 9 and then remove cassette stopper 8 Remove screw A and then remove detector spring B 9 Remove screw C and then remove AOLS PCB D 10 Remove screws E from bias link 6 and then remove link support F 11 Remove two screws G and then remove square cord from square shaped connector H 12 Using a dedicated tool remove connector cord I from square shaped connector H Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 58 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 33 Cover Frame 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove interface cable 1 3 Open stacker cover 2 Remove two screws 3 and then remove Cover Frame 4 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 59 r te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 34 LED head 1
33. er supply guide C 3 8 Remove paper supply guide B 4 9 Remove four claws and then remove front feeder paper end sensor 1 10 Remove two screws 5 and then remove square shaped connector 6 from paper supply guide C 3 11 Using a dedicated tool remove the connector cord 7 from the square shaped connector Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 42 Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 17 Main chassis unit 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the rear cover see 3 3 1 3 Remove the contact Assembly see 3 3 2 43 4 Remove the side cover R see 3 3 5 43 5 Remove the side plate R see 3 3 6 1 to 6 5 6 Remove the stacker cover Assembly See 3 3 7 3 7 Remove the front feeder roller Assembly see 3 3 12 1 to 3 53 At this time it is not required to remove the manual feed hopper Assembly 8 Remove the earth plate HP 9 Lift gear TR 1 to unlock it Remove gear TR 1 and transfer roller 2 At this time two bearings TR 3 and two transfer springs 4 are also removed Do not lose bearings or springs 10 Remove connector cover 5 in direction of arrow and then remove four connectors 6 and 7 11 Remove the DC Fan motor 12 Rem
34. er switch off Unplug the AC power cable from the outlet 2 Remove the manual feed hopper Assembly see 3 3 4 43 3 Remove the side cover R see 3 3 5 4 4 Remove the front feeder Assembly see 3 3 12 1 to 3 3 5 Remove the inner cover and square shaped connector see 3 3 13 5 and 6 6 Using a dedicated tool remove the connector of hopping motor 1 from the square shaped connector 7 Remove the paper supply guide A see 3 3 13 7 to 10 7 8 Remove the lever R see 3 3 10 6 9 Remove two screws 2 and then remove side plate R Assembly 3 10 Remove two screws 4 and then remove hopping 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 opx okidata com Page 41 OKIDATA Service Guide OKIPAGE16n t Ri fg Chapter 3 Parts Replacement 3 3 16 Front feeder paper end sensor 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the manual feed hopper Assembly see 3 3 4 5 3 Remove the side cover R see 3 3 5 4 4 Remove the front feeder roller Assembly see 3 3 12 1 to 3 53 5 Remove the side plate R Assembly see 3 3 15 1 to 9 3 6 Using a dedicated tool remove the connector of front feeder paper end sensor 1 from the square shaped connector 7 Remove two screws 2 and then remove pap
35. erface time out at the host 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 A b OKI HSP interface Option This interface slot is an OKI unique universal interface that provides the platform to connect various boards 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
36. erica Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com Page 14 OKID AT iN Service Guide OKIPAGE16n By Chapter 2 Operation Description 2 4 2 Electrophotographic process The electrophotographic processing is outlined below Figure 2 5 shows the electrophotographic 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
37. ght 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 24 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 2 Parts Layout BOARD PSBA OKIPAGE t nPS T ee iy all Slide Manual feed cover R hopper assy Figure 3 1 Front feeder unit ag Fusing unit Stacker cover ay ao Toner cartridge DC fan motor Hopping roller assy 2 Figure 3 Figure 3 3 Figure 3 4 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 25 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 How to Change Parts This section explains how to change parts and assemblies appearing in the disassembly diagram 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 26 OKIDATA Service Guide OKIPAGE16n 7 Ff Chapter 3 Parts Replacement 3 3 1 Rear cover side cover L Assembly face up stacker Assembly and I F cover Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the interface cable 1 Remove drum toner As
38. hapter 4 2 2 7 EEPROM Set the LED head drive time Refer to Chapter 4 2 1 7 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 70 OKIDATA Service Guide OKIPAGE16n 4 2 1 Setting of LED head drive time Note When the luminous intensity marking of the replaced LED head new part is the same as that of the used LED head old part do not set the LED head drive time e Luminous intensity marking label 1 Normal Type LED HEAD Last 3 digits indicate the LED head marking number e Setting of LED head drive time Drive time of the LED head is to set parameter of drive time setting values corresponding to the lumious intensity displays marked on the LED head to EEPROM a Corresponding table of lumious energy display and drive time parameter Luminous intensity Luminous intensity display on LED head Drive time parameter display on LED head Drive time parameter 0 27 0 28 0 29 0 30 0 31 0 32 0 33 0 35 0 36 0 37 0 38 0 40 0 41 0 43 0 44 0 46 0 47 0 49 0 50 0 52 0 53 0 57 0 58 0 60 b Setting 0 61 0 64 0 65 0 69 0 70 0 73 0 74 0 79 0 80 0 84 0 85 0 90 0 91 0 96 0 97 1 03 1 04 1 10 1 11 1 18 1 19 1 26 1 27 1 35 Example Setting method the parameter to 14 in case of privous parameter is 17 BI Ga
39. ion Roller Hopping Roller One way Clutch Gear A 1st Tray 2 After turning on the inlet sensor the paper advances further by a predetermined length until it hits the registration roller The skew of the paper can thus be corrected OPC Drum Paper N 1 Transiter Roller Registration Roller Pulse Motor Hopping Roller 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 the leading edge of the paper causes the paper sensor to turn on the printing is started synchronously 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 roller 4 Exposure 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 associated with the image signal 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 1 As the toner supply roller rotates while rubbing on the developing roller a friction charge is generated betwee
40. itch while pressing the RECOVER key Function There are 8 functions as follows Page count display Page count printing enable disable Rolling ASCII continuous printing EEPROM reset HSP ERROR recovery MENU HSP ERROR count display HSP ERROR count reset SIDM enable disable e Engine maintenance mode 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 15 functions as follows Head drive time setting Setting of Head drive timing compensation while OST is on Compensated head type setting 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 envelope feeder paper feed length Selection of envelope feeder download table 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 com Page 64 OKIDATA aao Gaas OAA 4 1 1 User maintenance mode To enter the user maintenance mode turn the power supply ON while pressing the Menu key This mode uses the menu for
41. key is pressed Menu key Press the E dor Writing into the EEPROM is performed T2 POS as 1 i Malara when the Enter key is pressed Press the Press the Menu key a dor No 1 Writing into the EEPROM is perlormed _ when the Enter key is pressed Press the Menu Key Prass the epos ao Phey Sameas 1 Writing into the EEPROM is performed when the Enter key is pressed Press the Menu key p the dor key Writing imo the EEPROM is performed EF TBL No 1 ng _ e ho when the Enter key is pressed Press the e Menu key FUSR CNT nnnann Press the Menu key Press the mer key proce hhk FUSR CNT FUSRCNT n A ON LINE RESET NG on Press the Menu key Press the lil ad Enter key proce os ENGINE ENGINE ON LINE ew Press the Menu key Press the ON LINE key INITIALIZING Press the 1 0 mm Press the Menu key Displayed wih 1 mm intervals Writing into the EEPROM is when the Enter key is pressed Press ihe dor Writing inte the EEPROM is e enl eiae Menu key Press the dor bhey Same as 1 Writing into the EEPROM is performed T2 POS Same as 1 Omm lt when the Enter key is pressed Press the ci Press dor Writing into the EEPROM is performed T TBL No 1 tng l No 3 a No 2 when the Enter key is pressed Press the or Writing into the EEPROM is perfomed ahi when the Enter key is pressed mm Press the Menu key
42. lacement 3 3 28 Inlet sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit See 3 3 17 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 opx okidata com Page 54 OKIDATA Service Guide OKIPAGE16n l F Chapter 3 Parts Replacement 3 3 29 Power Supply Board Insulator 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove two screws 1 and then remove inlet holder 2 At this time remove inlet 3 from inlet holder 2 4 Remove eight screws 4 connector 5 and two screws 6 Remove Power Supply Board 7 together with AOLC PCB 8 5 Unplug connector 9 and remove PowerSupply Board 7 6 Remove insulator 10 Caution Be careful not to deform the paper end lever A av Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 55 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 30 Paper end lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet
43. length of the High Capacity Second Paper Feeder 10 Selection of High Capacity Second Paper Feeder download table e This function selects the download table for the High Capacity Second Paper Feeder 11 Setting of Multi Feeder paper feed length e This function sets the paper feed length of the Multi Feeder 12 Selection of Multi Feeder download table e This function selects the download table for the Multi Feeder 13 Fuser count display e Displays on the LCD the total number of printed pages counted at the engine 14 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 15 Engine reset e All EEPROM areas used by the engine are reset to the factory default values e The following items are excluded Menu level 1 Menu level 2 Operator panel 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 2 5 8 13 they are the parameter for adjusting in the factory e Engine maintenance mode menu system Press the mm Press the Menu key Press ihe FRNT POS oo 0mm Press the Displayed with 1 mm intervals Writing into the EEPROM is when the Enter key is pressed Writing inte the EEPROM is performed when the Enter
44. m OKIDATA Page 16 Service Guide OKIPAGE16n Chapter 2 Operation Description 2 5 Paper Jam Detection 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 performed by removing the jammed paper namely by opening the upper cover removing the jammed paper and closing the upper cover Error Cause of error Paper input jam Paper feed jam Paper exit jam Paper size error 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 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 distance after the 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 At power on time the paper is placed on the outlet sensor The paper does not pass over the outlet sensor within a predetermined time after the leading part of the
45. me two bearings TR 4 and two transfer roller springs 5 are also removed 4 Remove diselectrification bar 6 and diselectrification film 7 from the chassis 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 62 OKIDATA aa 4 ADJUSTMENT 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 set with the key operation on the operator panel This printer has three kinds of maintenance modes It is required to select one of the maintenance modes necessary 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 opx okidata com a or Page 63 4 1 Maintenance Modes And Functions e User maintenance mode To enter the user maintenance mode turn on the POWER switch while pressing the key Function There are seven functions as follows Menu reset Hex dump Drum counter reset Operator panel menu disable X adjust Y adjust Setting e System maintenance mode 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 sw
46. mum difference 35 6 35 6 Degree F of wet and dry bulb 2 2 Degree C temperature Temperature 50 90 32 110 14 110 F In operation Power off mode During Storage Unit Maximum wet bulb temperature Minimum difference of wet and dry bulb temperatures Humidity 35 6 35 6 F 77 80 4 F 10 32 0 43 10 48 C 20 80 10 90 10 90 RH 25 26 8 C 2 2 C Notes 1 Storage conditions specified above apply to printers in packed condition 2 Temperature and humidity must be in the range where no condensation occurs Temperature C 32 28 Operation range 10 80 Humidity 13 Noise During operation 50 dB A or less At standby 45 dB A or less Power save mode 43 dB A or less 14 Consumables Toner cartridge kit 5 000 5 duty Image drum cartridge 30 000 at continuous printing 18 000 3 page job 11 000 1 page job 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 6 OKIDATA a 1 5 Safety Standards 1 5 1 Certification Label 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 7 Service Guide OKIPA
47. n 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 Made Charge roller Toner supply roller i Developing roller Image drum 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 positive 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 Transfer roller 7 Fusing After the end of the transfer the unfused toner image is fused on the paper under heat a
48. n the direction of arrow A 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 49 OKIDATA Service Guide OKIPAGE16n Chapter 3 Parts Replacement 3 3 24 Hopping roller Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Release the latch Remove hopping roller gear 1 and bearing P 2 Then remove idle gear HF 3 4 Remove the left side of hopping roller shaft 4 from the groove Pull out hopping roller shaft 4 and hopping roller Assembly 5 toward the left 5 Release the latch and remove bearing L 6 6 Release the latch and remove hopping roller Assembly 5 At this time knock pin 7 is also removed Be careful not to lose the knock pin Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 50 te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 25 Outlet sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit See 3 3 17 3 Press the clamp part of outlet
49. nd pressure as it passes between the heater roller and the backup roller The heater roller with a Teflon coating incorporates a 400W 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 185 188 C A safety thermostat cuts off voltage supply to the heater by opening the thermostat in the event of abnormal temperature rises The backup roller is held under a pressure of 2 5 kg from the pressure spring at each side Heater Heater Roller Separation Claw 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 4 di L Su Py n Transfer Roller 9 Cleaning of rollers Image Drum Cleaning Roller The charge roller transfer roller and cleaning roller are cleaned in the following cases e n warming up at power on time e n 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 opx okidata co
50. nsecutively Toner Low is canceled When there is no change with the toner sensor for 2 cycles 3 398 sec x 2 or more then the Toner Sensor Alarm is activated e The toner sensor is not monitored while the drum motor is stopped Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 19 DATA Service Guide OKIPAGE16n OKI Chapter 2 Operation Description 2 8 Stacker full Detection 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 20 08 Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 9 Page Size Detection 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 OO fetter o S A ecutive C 6 felt a a Legal 13 Bo Copyright 1997 Okidata Division of OKI America Inc All rights reser
51. oller ee 240 V 300 V Voltage applied to developing roller pe Ss DB 360 V 450 V Voltage applied to toner supply roller 4 KV 1 3 kV Voltage applied to transfer roller 400 V Voltage applied to cleaning roller E 3 Photosensor The photosensor mounted on this power supply board supervises the paper running state during printing Figure 2 3 shows the sensor layout diagram Paper running direction Exit roller LT Outlet sensor Figure 2 3 Sensors Function CdS ensingsstate Inlet sensor 1 Detects the leading part of the paper and gives ON Paper exists the supervision timing for switching from OFF No paper exists hopping operation to feeding operation Supervises the paper running state and the paper size according to the paper reach time and running time Inlet sensor 2 Detects the form width ON A4 or larger OFF Smaller than A4 Supervises the paper running state OFF No paper exists Outlet sensor Supervises the paper feed and size according to ON Paper exists the time of arrival to the sensor and the time of OFF No paper exists passage of paper OFF No paper exists OFF short No Toner low exists 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 8 Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 3 Relay Dri
52. ove eight screws and then remove main chassis unit 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 opx okidata com Page 43 OKIDATA Service Guide OKIPAGE16n Chapter 3 Parts Replacement 3 3 18 Registration roller 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the front feeder roller Assembly see 3 3 12 1 to 3 53 3 Remove four screws 1 Lift and remove the registration roller Assembly 2 left side first then right side 4 Release the latch and remove registration roller gear 3 and pressure roller gear 4 5 Remove left and right side registration roller bearing Assemblies 5 and then remove resist roller 6 and pressure roller 7 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 44 OKIDATA Service Guide OKIPAGE16n Fi Chapter 3 Parts Replacement 3 3 19 Drum motor 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 4 3 Remove the registration roller Assembly see 3 3 18 1 to 3 5 4 Remove fuser Assembly 5 Release the latch of fuser pressure roller release lever 1 and pull out it toward the right At this time
53. paper has reached the outlet sensor The paper size check with the manual feed specified considers the reference size as free size The size of the paper is supervised by the inlet sensors 1 It is 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 the paper size set by command or menu The paper size check with the manual feed specified considers the reference size as 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 opx okidata com Page 17 DATA Service Guide OKIPAGE16n OKI l Chapter 2 Operation Description 2 6 Cover Open When the stacker cover is opened the cover open microswitch on the power supply board 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 control 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 18
54. rial http bpx okidata com Page 5 OKIDATA eSa 1 4 Specification 1 Type Desk top 2 External dimensions Height 10 6 270 mm excludes protruding Width 14 4 366 mm Portion Depth 16 9 430 mm 3 Weight 15 2 kg 33 5 Ibs 4 Development method Dry electrophotography Exposure method LED stationary head 5 Paper used lt Type gt e Standard paper Xerox 4200 20 Ibs e Application paper manual face up feed Label Envelope OHP paper Transparency lt Size gt e Standard sizes Letter Legal Executive Envelope e Applicable sizes Width 3 4 to 8 5 86 to 216 mm Length 5 5 to 14 140 to 355 6 mm lt Thickness gt Automatic feed 16 to 28 Ibs 60 to 105 g m 2 Manual feed Label OHP paper transparency Envelope 6 Printing speed First print 10 sec Continuous print 16 sheets min Warm up time 90 sec at room temperature 77 F 25 C and rated voltage 120 VAC 7 Paper feed method Automatic feed or manual feed 8 Paper delivery method Face down face up 9 Resolution 600 x 600 dots inch 10 Power input 120 VAC 5 5 15 230 240 VAC 10 14 11 Power consumption Peak Approx 600W Typical Operation Approx 220W Idle Approx 100W Power save mode Approx 20W 12 Temperature and humidity in operation _____ Power off mode During Storage Unit 10 32 0 43 10 43 Degree C temperature 25 26 8 Degree C Mini
55. rror ERROR 74 96 6 9 3 Image troubleshooting 97 eeesews 1 Image are light or blurred 98 ee 2 Dark background density 99 weer 3 Black paper is output 100 een 4 Black belts or stripes in the vertical direction 101 ee 5 Cyclic error 102 ce 6 Print voids 103 PR 7 Poor fusing 104 MAT 8 White belts or streaks in the vertical direction 105 pone 9 Snowy print of high density pattern 106 POPPER 10 Blotchy faded print 107 7 Wiring Diagram 7 1 Interconnect Signal Diagram 108 7 2 PCB Layout 109 7 3 Resistance Check 110 Program Font ROM Location 111 8 Parts List 8 PARTS LIST 112 Printer Unit Figure 8 1 113 Main Chassis Unit Figure 8 2 1 of 2 114 Main Chassis Unit Figure 8 2 2 of 2 115 Table of Contents Page Front Feeder Unit Figure 8 3 116 Base Unit Figure 8 4 117 A Centronics Parallel Interface Appendix A Centronics Parallel Interface 118 B High Capacity Second Paper Feeder Preface 119 1 Outline 120 1 1 Functions 121 1 2 External View and Component Names 122 2 Mechanism Description 123 2 1 General Mechanism 124 2 2 Hopper Mechanism 125 3 Parts Replacement 126 3 1 Precautions Concerning Parts Replacement 127 3 2 Parts Layout 128 3 3 Parts Replacement Methods 129 eee 3 3 1 Idle rollers 130 eee 3 3 2 AOLT PCB 131 seeds 3 3 3 Hopping motor 132 sce 3 3 4 Feed roller 133 POP 3 3 5 Hopping roller rubber 134 MENETES 3 3 6 Side frame L assy 135 are 3 3 7 Side frame R assy 136 4 TROUBLE
56. rw F Ae Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 Toner Low Detection e Composition e 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 Stirring Bar e Operation Toner Low is detected by monitoring the time interval of the encounter of the magnet set on the sensor lever and the magnet on the stirring bar Operation during toner full state e The stirring bar rotates due to the 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 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 encounters the magnet of the sensor lever becomes long By monitoring this time interval toner low can be detected TONER FULL state TNRSNS RONS E gt 3 398 4 t1 3 398 SEC TONER LOW state TNRSNS q P ee u t1 lt 3 398 4 4 398 SEC e When the toner low state is detected 2 times consecutively Toner Low is established e When the toner full state is detected 2 times co
57. sembly see picture below and store in black plastic bag shipped w printer 3 Open the face up stacker Assembly 8 Disconnect the engagement at the left and right protrusions 8A Remove the face up stacker Assembly 8 Flex the Assembly 8 in the middle to disengage 8A from the Rear cover 0 4 Open the stacker cover 2 and the manual feed hopper Assembly3 Remove three screws 4 Remove the side cover L Assembly 5 5 Remove two screws 6 Remove the I F cover Assembly 7 6 Remove two screws 9 and four claws A Use a small flat blade screw driver to pop claws Remove the rear cover 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 27 OKIDATA Service Guide OKIPAGE16n a a Chapter 3 Parts Replacement 3 3 2 Contact Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover L Assembly see 3 3 1 1 to 4 5 3 Remove two screws 1 Remove the contact plate cover 2 and the contact Assembly 3 Pull bottom of Assembly 3 out first then the top of Assembly Remove fan connector cables from location 4 Caution Be careful not to deform the electrodes of the contact Assembly when removing the contact Assembly Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business
58. the dor bkey Writing into the EEPROM is performed EF TAL No 1 ng l No 3 e o when the Emer key is pressed Press the ms Menu key FUSR CNT nninnnn Press the Menu hey i e pkn m nter key processing 7A FUSR CNT ON LINE i Press the Menu key Pre ENGINE Erter key a ij RESET Press the Menu key Press the ON LINE key ON LINE XXX Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 68 OKIDATA aa 4 1 4 EEPROM initialization The corresponding area of the EEPROM is initialized for each event as shown Table 4 1 Table 4 1 Menu level 1 LED haed drive time Engine revision error LCD display ENGINE RESET Engine ID emor f j LCD display ENGINE RESET User information erar LCD display EEPROM RESETTING j i shows instialization Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 69 OKIDATA Service Guide OKIPAGE16n 4 2 Adjustment When Replacing A Part Adjustment becomes necessary when replacing one of the following parts Set the LED head drive time Refer to Chapter 4 2 1 7 mage Drum Cartridge Reset the image drum counter Refer to User s manual user Unit Reset the fuser counter Refer to C
59. two keys corresponding to the destination according to the following table Keys to be depressed ODA MENU gt OEL MENU lt OKI INT A MENU PAPER SIZE Australia etc OKI INT L MENU TRAY TYPE Singapore etc 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 te Service Guide OKIPAGE16n OKIDATA Chapter 5 Periodical Maintenance 5 1 Periodic Part Replacement As specified below the parts shall be replaced periodically Part name Condition for Cleaning replacement eroner AE a LED head Image drum cartridge 30 000 LED head 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 i Service Guide OKIPAGE16n OKIDATA Chapter 5 Periodical Maintenance 5 2 Cleaning 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 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 75 te Service Guide
60. ved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 21 r G Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 10 PostScript Board BOARD PSBA Optional The PostScript board consists of program font ROM s an EEPROM and a LocalTalk interface control circuit 1 Program font ROM s The program font ROM s store the PostScript Level II program and its fonts MASK 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 LocalTalk interface control circuit AppleTalk protocol data is received from the host system via LocalTalk interface The LocalTalk interface control circuit consists of a CPU a program ROM a SRAM and a driver receiver IC 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 f te Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 PARTS REPLACEMENT The 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
61. ver 3 and the torsion spring 4 are also removed note position of torsion spring 6 Remove two screws 5 and then remove square shaped connector 6 7 Using a dedicated tool remove the connector of switch Assembly 7 from square shaped connector 6 8 Turn idle gear 8 in the direction of arrow A until front feeder plate 9 is elevated 9 Remove front feeder gear and then remove two springs F A Be careful not to lose the springs 10 Remove four screws B and then remove paper supply guide A C At this time front feeder earth plate D G H are also removed 11 Remove front feeder plate 9 by releasing the engagement at two parts 9A Switch Assembly 7 may now be removed 12 Pull up separator E toward you and then release two mounting posts at 15A to remove the separator At this time two springs F are also removed simultaneously Be careful not to lose the springs 13 Release two clutches on paper supply guide C and pull out switch Assembly 7 upward Switch Assembly 7 should be moved more towards the center of the paper path During Re assembly use great care do not pinch crimp or cut wires to switch Assembly 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 39 wi FA Service Guide OKIPAGE16n OKIDATA Chapter 3 Parts Replacement 3 3 14 Front feeder roller Assy
62. ver Board AOLC board This board relays signals between the Control board and the Power supply board and includes the registration motor and drum motor driver IC 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 12 Ww Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 4 Electrophotographic Process 2 4 1 Electrophotographic process mechanism see i 2 4 2 Electrophotographic process see 4A 2 4 3 Process operation description see 4A Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http opx okidata com Page 13 AW FAY Service Guide OKIPAGE16n OKIDATA Chapter 2 Operation Description 2 4 1 Electrophotographic process mechanism This mechanism prints image data from the control board on the paper by electrophotographic process The Figure 2 4 shows the layout of the electrophotographic process mechanism Fuser Hopping Motor LED Head i Drum Motor Registration Motor Image Drum Unit 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 image formed by the LED head 2 Hopping motor This

OKIPAGE 16n Led Printer

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