Oki OKIPAGE8c Maintenance Manual
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Oki OKIPAGE8c Maintenance Manual

Oki OKIPAGE8c Maintenance Manual

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Oki OKIPAGE8c Maintenance Manual

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  • Page 1 Thank You for purchasing this Factory Service Manual on EBAY from PCTECHINFO! Click Here for more Factory Service Manuals for other Computer and Printer / Copier Manufacturers from PCTECHINFO!
  • Page 2 OKIPAGE8c LED Page Printer ODA/OEL/INT 1998,7,6 MAINTENANCE MANUAL...
  • Page 3 Although reasonable efforts have been taken in the preparation of this manual to assure its accuracy, this manual may still contain some errors and omissions. OKI will not be liable for any damage caused or alleged to be caused, by the customer or any other person using this maintenance manual to repair, modify, or alter OKIPAGE 8c in any manner.

  • Page 4: Table Of Contents

    CONTENTS 1. SPECIFICATIONS ..................1-1 Basic System Configuration ..................1-1 Printer Specifications ....................1-2 Option Specifications ....................1-3 Basic Specifications ....................1-4 2. OPERATION ....................2-1 Main Control Board (PCR PCB) ................. 2-2 Engine Control Board (PX4 PCB) ................2-5 Power/Board ......................
  • Page 5 3.3.18 Square-shaped Connector ................3-25 3.3.19 Hopping Motor ....................3-26 3.3.20 Gear One-way ....................3-27 3.3.21 Feeder Unit Front ..................3-28 3.3.22 Mannual Feed Hopper Assy ................. 3-29 3.3.23 Guide Paper Input Assy................3-30 3.3.24 Lever Input Sensor ..................3-31 3.3.25 Roller Registration, Roller Assy Hopping .............
  • Page 6 Troubleshooting Flow ....................6-2 6.5.1 LCD status message/trouble list ..............6-2 6.5.2 LCD message troubleshooting ..............6-15 6.5.3 Image troubleshooting .................. 6-28 7. WIRING DIAGRAM ..................7-1 Resistance Check ...................... 7-1 Program/Font ROM Location ..................7-5 8. PARTS LIST ....................8-1 Appendix A .......................

  • Page 7: Specifications

    1. SPECIFICATIONS...

  • Page 8: Basic System Configuration

    SPECIFICATIONS Basic System Configuration The basic system configuration of OKIPAGE 8c is illustrated in Figure 1.1. 1 - 1...

  • Page 9: Printer Specifications

    Printer Specifications This printer unit is composed with the following hardware. • Electro-photographric processor • Paper feeder • Controller (CU part / PU Part) • Operator panel • Power board (High voltage part / PU part) Figure 1-2 show the printer unit configuration. Stacker Cover Assy Face-up Stacker Assy I/F Cover Assy...

  • Page 10: Option Specifications

    Option Specifications Options available for OKIPAGE 8c are as follows. (1) 2nd-Feeder (2) RAM SIMM module (72 pin SIMM, 4MB/8MB/16MB/32MB) * Make sure to use a set of 2 of the same volume size modules. 1 - 3...

  • Page 11: Basic Specifications

    Basic Specifications (1) Dimensions Width: 18.8" (478mm) Length: 24.5" (622mm) Height: 15.6" (396mm) (2) Weight Approx. 48kg (106lbs) (3) Form Type: Ordinary paper (Hammermill 24lb) and OHP (Only CG3710) Recommended paper (for color printing) Color laser paper (20lb to 24lb) Note: The printout color tones are dependent upon the whiteness of the print paper Sizes:...
  • Page 12 (13) Temperatures and relative humidities Temperature Temperature conditions Temperature (in _F) Temperature (in _C) Remarks Operating 50 to 89.6 10 to 32 17_C to 27_C (for assurance of full-color printout quality) Power off Non-operating 32 to 109.4 0 to 43 with drum and toner Storage (1 year max.) -14 to 109.4...
  • Page 13 OPERATION DESCRIPTION...

  • Page 14: Operation

    OPERATION OKIPAGE 8c is a tandem color electrophotographic page printer, using 4992-LED technologies , OPC, dry single-component non-magnetic developing, roller transfer, heat-compression fixing and so on. The printing method used is a Black Writing method which applies light beams to printout areas.

  • Page 15: Main Control Board (Pcr Pcb)

    ModeIn ModeClock ModeClk EEPCS1 MasterClock uPU66044 (Not installed) GN-014-LMU External Agent 74ACT1284 Bi-Centro SysAD SysCmd Control 74ALS244 BusReq BusAck OKI HSP Reset (Not installed) Host I/F Reset circuit RSTIN DIP SW (TE6135 (6137), 16550, 53C80) Figure 2.2 2 - 2...
  • Page 16 Centronics bidirectional parallel interface • 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 as not to cause interface time-out at the host side.
  • Page 17 (For the electrical/physical characteristics of this interface, see APPENDIX B) (b) OKI HSP interface (Option) This interface (slot) is an OKI unique universal interface that provides the platform to connect various of boards (including those supplied by third venders) such as the LAN connection expansion board and SCSI expansion board.

  • Page 18: Engine Control Board (Px4 Pcb)

    CPU (MSM65524), general purpose LSI chips, EPROM, EEPROM, pulse motor drivers, and video memory. (See Figure 2.4.) (1) CPU This is an 8-bit CPU (OKI MSM65524) containing the AD converter and controls the whole system. (2) General-purpose LSI...

  • Page 19: Power/Board

    (3) EPROM This EPROM (27C512-150) has a storage capacity of 512K bits and stores programs for the PU block. (4) EEPROM This EEPROM (NM93C66N-NW) having a storage capacity of 4K bits is mounted on the board by means of IC socket and stores adjustment values etc. (5) Pulse motor drivers These drivers (MTD2005F) drive eight pulse motors for moving up and down the EP and transferring medium.

  • Page 20: Mechanical Processes

    Mechanical Processes Figure 2.5 shows the mechanical processes of OKIPAGE 8c. Figure 2.5 2 - 7...

  • Page 21: Electrophotographic Processing Mechanism

    2.4.1 Electrophotographic processing mechanism (1) Electrophotographic processes Each process of the electrophotographic processing mechanism is outlined below. 1 Paper pickup This process causes the roller to give a DC voltage to the paper to have a negative charge. With this negative charge, the paper is electrostatically attracted to the roller. 2 Charging This process gives a DC voltage to the CH roller so that the OPC drum may have a uniform negative charge on its surface.
  • Page 22 (2) Paper pickup Pickup roller Paper (medium) Conveying belt Conveying belt Driven roller Power supply A DC voltage (0V to 2KV) is applied to the driven roller A to positive charge the lower surface of the paper. The negatively-charged paper is electrostatically attracted to the pickup roller. With this, the paper is in close-contact with the conveying Belt and conveyed steadily.
  • Page 23 (3) Charging This process applies a DC voltage to the charging roller in contact with the surface of the OPC drum. Power supply Charging roller unit OPC drum (4) Exposure The light beams from the LED head are applied to the surface of the OPC drum which is charged negatively.
  • Page 24 (5) Developing This process applies toner to the latent image on the surface of the drum to convey it into a toner image. Developing is carried out on the surface of the OPC drum at which the OPC drum is in contact with the developing roller. 1 The sponge roller transfers toner to the developing roller.
  • Page 25 (6) Transferring The transfer roller made of conductive sponge presses the paper against the surface of the OPC drum so that the paper may be close contact with the surface of the OPC drum. This process fits the paper to the surface of the OPC drum by the transfer roller and applies positive charge (opposite to the charge of the toner) from under the paper.
  • Page 26 (7) Fixing The toner image just transferred to the paper is fused and fixed to the paper while the paper is passing through the gap between the heat roller and the backup roller. The teflon-coated surface of the heat roller is heated up by the 800-watt heater (or a halogen lamp) provided in the heat roller.

  • Page 27: Paper Running Process

    2.4.2 Paper running process Figure 2.6 shows how paper moves in the OKIPAGE 8c. Figure 2.6 Paper Route 2 - 14...
  • Page 28 (1) Paper hopping and transfer and up/down movement of pinch roller 2 Paper is hopped and delivered by the mechanism shown below. This mechanism is driven by a single pulse motor. Resist roller 2 One-way gear C Resist roller 1 Idle gear C One-way gear B Idle gear A...
  • Page 29 (a) Hopping 1 The pulse motor turns in the arrow direction of “a” (counterclockwise) and drives the hopping roller to move the paper until the Entrance sensor turns on. Although the one- way gears B and C are also driven, the resist roller 2 does not turn because the reverse rotations of the one-way clutch gears are not transmitted to the resist roller.
  • Page 30 (2) The hopping operation of the front feeder and the up/down operation of the pinch roller 2 are performed by a single pulse motor, as shown below. One-way clutch gear B Idle gear A Sensor position Up/down Hopping roller From front Pinch roller One-way clutch gear A Idle gear B...
  • Page 31 (a) First and second hopping rollers 1 When the front edge of the paper passes by the pickup roller, the pulse motor of the front feeder turns left (in the direction of “b” to drive the cam. The cam moves up the pinch roller 2.
  • Page 32 (b) Front feeder hopping 1 The pulse motor of the front feeder turns right (in the direction of “a” to drive the hopping roller. The paper is fed until the Entrance sensor 2 turns on. Although the one-way clutch gear B is also rotating, the pinch roller 2 does not drive the up/down cam by means of the one-way clutch.
  • Page 33 (2) Up/down movement of the I/D unit and rotation of the EP drum The up/down movement of the I/D unit and the rotation of the EP drum are performed by a mechanism shown below. (See Figure 2.6-a) This mechanism is driven by a single pulse motor.
  • Page 34 I/D unit up/down actuator I/D unit Up/down lever Figure 2.6-b I/D unit Up/down lever Figure 2.6-c 2 - 21...
  • Page 35 (3) Lubrication and cleaning of fixing, ejecting, and heat rollers The fixing roller, the ejecting roller, and the heat roller are lu- Face-down stacker bricated and cleaned by a single pulse motor. When the heat roller pulse motor turns right (in the direction of “a”), the heat roller and the backup roller turn left (in the direction of Ejection roller...

  • Page 36: Sensors

    Sensors 2.5.1 Paper related sensors Ejection roller FF hopping roller Write sensor K drum C drum M drum Y drum Heat roller Pickup roller Pinch roller 2 Driving roller Exit sensor Form width sensor Driven rollers Pinch roller 1 Resist roller 1 Backup roller Resist roller 2 FF sensor 1...

  • Page 37: Other Sensors

    2.5.2 Other sensors Form end sensor This sensor checks whether the paper cassette is empty. FF form end sensor This sensor checks whether the front feeder has paper. FF home switch This microswitch checks whether the front feeder stage is in the up or down position. EP up/down sensor (one for each color Y, M, C, K) This sensor checks whether the I/D unit is in the up or down position.

  • Page 38: Correction Of Color Deviation

    Correction of Color Deviation OKIPAGE 8c is equipped with an array of I/D units which cannot be from generation of color deviations. This mechanically caused color deviation is corrected electronically as shown below. (1) Color deviations to be corrected 1 Color deviation in the X axis (Positional error of the LED head) 2 Diagonal color deviation (Positional error of the LED head) 3 Color deviation in the Y axis (Positional errors of the I/D units and light receivers) (2) Method of correction Print out the preset color chart, compare the printed color chart by...

  • Page 39: Form Jam Detection

    Form Jam Detection OKIPAGE 8c checks for a paper jam when the page printer is powered on and during printing. When finding a paper jam, OKIPAGE 8c immediately stops the printing process. To recover the printer, open the cover, find and remove the jammed paper, then close the cover. Error Conditions Form feed jam...

  • Page 40: Toner Low Detection

    2.10 Toner Low Detection • 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 engagement of concave in the stirring gear. Concave Magnet Stirring Bar...

  • Page 41: Page Size Detection

    TONER FULL state TNRSNS t1 < 0.74 SEC (Y) t1 < 1.165 SEC (M, C, K) 1.965 SEC. TONER LOW state TNRSNS t1 > 0.74 SEC (Y) t1 > 1.165 SEC (M, C, K) 1.965 SEC. • When the toner low state is detected for 2 times consecutively, Toner Low is established. •...

  • Page 42: Power-On Processing

    2.12 Power-on Processing 2.12.1 Self-diagnostic test (1) Initial test The following checks are automatically performed when the OKIPAGE 8c page printer is powered on: (a) ROM check (b) RAM check (c) EEPROM check (d) Flash ROM check (2) ROM check (a) Checks ROM by comparing the sum of bits in the received data unit by the number of bits in the transferred data unit.

  • Page 43: Parts Replacement

    PARTS REPLACEMENT...

  • Page 44: Precautions For Parts Replacement

    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. 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: Turn off ("o") the power switch of the printer ii) Disconnect the AC inlet plug of the AC cable from the AC receptacle.
  • Page 45 [Service Tools] Table 3-1 shows the tools required for field replacement of printed circuit boards and units. Table 3-1 Service Tools Service Tools Q' ty Place of use Remarks No. 1-100 Philips 2~2.5 mm screws screwdriver No. 2-200 Philips 3~5 mm screws screwdriver, Magnetized No.

  • Page 46: Parts Layout

    Parts Layout Figure 3-1 3 - 3...
  • Page 47 Figure 3-2 3 - 4...
  • Page 48 Figure 3-3 3 - 5...
  • Page 49 Figure 3-4 3 - 6...

  • Page 50: How To Change Parts

    How to Change Parts This section explains how to change parts and assemblies appearing in the disassembly diagram below. 3 - 7...

  • Page 51: Cover Assy Rear

    3.3.1 Cover Assy Rear Unscrew 2 screws 1 then lift the cover assy rear 2 a little bit, then remove the cover assy rear by releasing the lock of two claws. Figure 3.3.1 Cover Assy Rear 3 - 8...

  • Page 52: Motor -Fan (80-25)

    3.3.2 Motor-Fan (80-25) Remove the cover assy rear. (See 3.3.1) Unscrew 2 screws 1. Detach the motor-fan 2 from the guide with its right side lifted then draw the motor-fan. Unplug the cable 3 then remove the motor-fan 2. Figure 3.3.2 Motor-Fan (80-25) 3 - 9...

  • Page 53: Paper Eject Assy

    3.3.3 Paper Eject Assy The paper eject assy comprises the frame eject assy and the guide paper eject assy. Remove the cover assy rear. (See 3.3.1) Open the top cover. Unscrew 4 screws 1 then remove the frame eject assy 2. Remove the guide paper eject assy 3 by releasing the lock of one claw.

  • Page 54: Cover Assy Stacker, Guide Eject Fd Assy

    3.3.4 Cover Assy Stacker, Guide Eject FD Assy Remove the cover assy rear. (See 3.3.1) Detach the cable from the cable clamp 1 by releasing its lock. Unscrew 8 screws 2 then remove the cover assy stacker. Unscrew 4 screws 4 then remove the guide eject FD assy 5. Cable Figure 3.3.4 Cover Assy Stacker, Guide Eject FD Assy 3 - 11...

  • Page 55: Frame Assy Upper

    3.3.5 Frame Assy Upper Remove the cover assy rear. (See 3.3.1.) Remove the cover assy stacker. (See 3.3.4.) Remove the holder LED assy. (See 3.3.45.) Detach the cable from the cable clamp 1 by releasing its lock. Remove connections of 4 connector cables 2 and 4 cables 3. Unscrew 4 screws 4 then remove the PCB 5.

  • Page 56: Plate Support Assy

    3.3.6 Plate Support Assy The plate support assemblies are provided right and left. The method of those replacements is the same. Remove the heat unit assy. (See 3.3.40) Remove the cover assy rear. (See 3.3.1) Remove the cover assy stacker. (See 3.3.4) Remove the frame assy upper.

  • Page 57: Limmiter 2Way (L), (R)/Plate Guide (L), (R)

    3.3.7 Limiter 2way (L), (R) / Plate Guide (L) , (R) Remove the plate support assy (L) and (R). (See 3.3.6) Unscrew 2 screws 1 then remove the limiter 2way (L) 2 and the plate guide (L) 3. Unscrew 2 screws 4 then remove limiter 2way (R) 5 and the plate guide (R) 6. Figure 3.3.7 Limiter 2way (L), (R) / Plate Guide (L) , (R) 3 - 14...

  • Page 58: Cover

    3.3.8 Cover Describes the method of removing the cover assy side (L)/(R), cover assy OP panel, cover front (L)/(R) and the cover rear (L). Remove the cover assy rear. (See 3.3.1) Remove the cover assy stacker. (See 3.3.4) Unscrew 2 screws 1 then remove the frame side (L) 2. Unscrew 2 screws 3 then release the lock of the claw with the cover assy side (R) 4 lifted a little bit, then remove the cover assy side (R).

  • Page 59: Pcb Assy : Pcr

    3.3.9 PCB Assy : PCR Open the top cover. Unscrew 2 screws 1 to release the lock of the claw by lifting the cover assy side (R) 2 a little bit, then remove the cover assy side (R). Unscrew 2 screws 8 to remove the plate shieled (CU) 9. Unscrew 3 screws 3 to remove the plate shield 4.

  • Page 60: Motor Fan (Cu)

    3.3.10 Motor Fan (CU) Open the top cover. Remove the cover assy side (R), frame side (L), cover assy OP panel and the cover front (R). (See 3.3.8) Unplug the cable 1 and unscrew 2 screws 2, 2 collars 4 and then remove the motor fan (CU) 3.

  • Page 61: Pxf Pcb/Px4 Pcb

    3.3.11 PXF PCB/PX4 PCB Since the PXF PCB and PX4 PCB are connected with each other via the connector, remove them at the same time. Remove the PCB assy : PCM. (See 3.3.9) Unscrew 5 screws 1 then remove the cover CU2. Unplug all the cables 5 connected to the PXF PCB 3 and PX4 PCB 4.

  • Page 62: Gear Heat Assy

    3.3.12 Gear Heat Assy Remove the cover assy side (R), cover assy OP panel, cover front (R) and the cover rear (L). (See 3.3.8) Remove the cover CU then unplug all the cables connected to the PXS PCB and unscrew 3 screws.

  • Page 63: Main Motor (A), (B)Assy

    3.3.13 Main Motor (A), (B) Assy Remove the PXF PCB and PX4 PCB. (See 3.3.11) Unscrew 4 screws 8 and remove 4 plate-Earth 9 and 4 lever Up/Dn 2 1. Unplug all the cables 2 connected and unscrew 4 screws 3, then remove the main motor (A) assy 4.

  • Page 64: Gear One-Way (Z30)

    3.3.14 Gear One-way (Z30) Four gear one-ways (Z30) are provided but the method of those replacements is the same. Do not disassemble the gear one-ways (Z30) because they are assemblies requires adjustment. Remove the PCB assy : PCM. (See 3.3.9) Remove the cover CU.

  • Page 65: Motor Assy Bt

    3.3.15 Motor Assy BT Remove the main motor (B) assy. (See 3.3.13) Unplug 2 cables 1 connected and unscrew 2 screws 2, then remove the motor assy BT 3. Figure 3.3.15 Motor Assy BT 3 - 22...

  • Page 66: Power Supply Unit, Holder Inlet, Sheet Insuration

    3.3.16 Power Supply Unit, Holder Inlet, Sheet Insulation Remove the motor-fan (80-25). (See 3.3.2) Remove the frame side (L), the cover assy side (R) and the cover rear (L). (See 3.3.8) Unplug the cable 1. Remove the holder inlet 3 by unscrewing 2 screws 2, then remove the power switch 4 and unplug the AC socket 5.

  • Page 67: Sensor Assy Box Toner

    3.3.17 Sensor Assy Box Toner Remove the power supply unit. (See 3.3.16) Unscrew the screw 1 then remove the sensor assy box toner 2 together with the bracket Unscrew the screw 4 then remove the sensor assy box toner 2. Figure 3.3.17 Sensor Assy Box Toner 3 - 24...

  • Page 68: Square-Shaped Connector

    3.3.18 Square-shaped Connector Draw the power supply unit. (See 3.3.16) (Do not remove the power switch and AC socket from the holder inlet.) Unplug the cable 1. Remove cable 2, screw 5 and bracket 6 in order and then take off SW from bracket 6 to pull off square-shaped connector 4.

  • Page 69: Hopping Motor

    3.3.19 Hopping Motor Remove the cover assy side (R), cover assy OP panel and the cover front (R). (See 3.3.8) Unscrew 2 screws 1 and unplug the cable 2, then remove the bracket hopping motor 3. (Be careful not to lose the gears 5, 6 and 7 which slip off at this time.) Unscrew 2 screws 8 then remove the hopping motor 3.

  • Page 70: Gear One-Way

    3.3.20 Gear One-way Remove the bracket hopping motor. (See 3.3.19) Remove the spacer 4 first and release the locks with the shaft by spreading the claws of the gear one-way 1, 2 and 3, then remove the gear one-ways. Claw Figure 3.3.20 Gear One-way 3 - 27...

  • Page 71: Feeder Unit Front

    3.3.21 Feeder Unit Front Remove the cover assy side (R), cover assy OP panel, cover front (R) and the cover front (L). (See 3.3.8.) Remove the cover CU. (See 3.3.11) Unplug the cable 1 and unscrew the screw 2, then remove the bracket FF shaft 3. Remove 2 E-rings 4 then remove the feeder unit front 5.

  • Page 72: Mannual Feed Hopper Assy

    3.3.22 Manual Feed Hopper Assy Open the manual feed hopper assy. Release the engagement between the holder and the link then remove the manual feed hopper assy. (Be careful not to damage the holder.) Link Holder Figure 3.3.22 Manual Feed Hopper Assy 3 - 29...

  • Page 73: Guide Paper Input Assy

    3.3.23 Guide Paper Input Assy Remove the cover assy OP panel, cover front (R) and the cover front (L). (See 3.3.8) Remove the feeder unit front. (See 3.3.21) Unscrew 4 screws 1 then draw out the guide paper input assy 2 from the left side by rotating its upper part .

  • Page 74: Lever Input Sensor

    3.3.24 Two Lever Input Sensors, Lever 2nd Feed Sensor Remove the guide paper input assy. (See 3.3.23) Release the engagement with the guide by pressing 2 lever input sensors 2 in the arrow direction, then remove them. Release the engagement with the guide by pressing the lever 2nd feed sensor 2 in the arrow direction, then remove the sensor.

  • Page 75: Roller Registration, Roller Assy Hopping

    3.3.25 Roller Registration, Roller Assy Hopping Remove the guide paper input assy. (See 3.3.23) Remove the bracket hopping motor. (See 3.3.19) Remove the gear one-way. (See 3.3.20) Remove the holder gear toner assy. (See 3.3.30) [Removal of the roller registration] Remove the gear 1 and 2 bushes 2 and 2 bearings 3, then 2 roller registrations 4.

  • Page 76: Roller Hopping

    3.3.26 Roller Hopping Remove the roller assy hopping. (See 3.3.25) and remove the 2 sub-roller hopping guide 3 . (Be careful not to lose the knock-pin which slips off together when removing the roller assy hopping.) Detach the roller hopping 2 from the shaft 1. Knock-pin Claw Figure 3.3.26 Roller Hopping...

  • Page 77: Pxu Pcb/Pxm Pcb, Lever Regist Sensor

    3.3.27 PXU PCB/PXM PCB, Lever Resist Sensor Since the PXU PCB and PXM PCB are connected with each other via the cable, remove them at the same time. Remove the guide paper input assy. (See 3.3.23) Unscrew 4 screws 1 and unplug the cable 2, then remove the PXU PCB 3 and PXM PCB 4 at the same time.

  • Page 78: Paper End Lever

    3.3.28 Paper End Lever Remove the guide paper input assy. (See 3.3.23) Remove the paper end lever 1 by releasing the engagement with the guide. Figure 3.3.28 Paper End Lever 3 - 35...

  • Page 79: Pco Pcb (Operator Panel)

    3.3.29 PCO PCB (Operator Panel) Remove the cover assy side (R) and the cover assy OP panel. (See 3.3.8) Unscrew 4 screws 1 and unplug the operator panel cable 2. Remove the PCO PCB 3 by releasing 6 claws. (Be careful not to drop the LCD (Liquid Crystal Display) 4 and 5 which are detached together.) Claw (six) Figure 3.3.29 PCO PCB (Operator Panel)

  • Page 80: Holder Gear Toner Assy

    3.3.30 Holder Gear Toner Assy Remove the cover assy side (R), cover assy OP panel, cover front (R) and the cover rear (L). (See 3.3.8) Unplug the cable 1 and unscrew the screw 2, then remove the holder gear toner assy 3. Figure 3.3.30 Holder Gear Toner Assy 3 - 37...

  • Page 81: Plate Latch Lever (Fd), Spring Latch Lever (Fd)

    3.3.31 Plate Latch Lever (FD), Spring Latch Lever (FD) Remove the cover assy side (R), cover assy OP panel, cover front (R) and the cover front (L). (See 3.3.8) Open the cover CU. (See 3.3.11) Unplug the cable 1. Unscrew the screw 2 then remove the bracket SW (side) 3. Unscrew 4 screws 4 then remove the stay upper (front) 5.

  • Page 82: Belt Cassette Assy

    3.3.32 Belt Cassette Assy Open the Top cover. Release the lock by drawing the cover knob then open the cover assy side (L). Turn the waste toner box (box toner assy) 1 to the left by pressing it down, then remove it. Draw out the belt cassette assy 2 by lifting it a little bit with its handle.

  • Page 83: High Voltage Power Supply Unit, Bracket Hv (Bt) Assy

    3.3.33 High Voltage Power Supply Unit, Bracket HV (BT) Assy Remove the belt cassette assy. (See 3.3.32) Unscrew 2 screws 1 with the stacker cover opened, then remove the plate HV 2. Unplug the cable 3 and 7 codes 4. Unscrew 2 screws 5 then remove the high voltage power supply unit 6.

  • Page 84: Eraser Bracket Assy, Eraser Bracket(Kcm) Assy

    3.3.34 Eraser Bracket Assy, Eraser Bracket (KCM) Assy Remove the belt cassette assy. (See 3.3.32.) Open the stacker cover. Remove four screws 5 and then remove the Plate Blind 6. [Removing the eraser bracket assy] Remove the screw 1 and the connector 2. Release the screw 7 and then remove the eraser bracket assy 3 [Removing the eraser bracket (KCM) assy] Remove the screw 1 and the connector 2.

  • Page 85: Shaft Link

    3.3.35 Shaft Link Remove the eraser bracket assy. (See 3.3.34.) Remove the gear one-way (Z30). (See 3.3.14.) Remove the E-ring 3 by sliding the sensor assy T (KCM) 1 and bracket sensor T (KCM) 2 together in the arrow (A) direction. Release the engagement between the lever Up/Dn and boss A of the lever link (R) 5 by sliding the spring support (R) 4, lever link (R) 5 and the bearing 6 together in the arrow (B) direction.

  • Page 86: Contact (Bl-R) Assy, Contact (Cl-R) Assy

    3.3.36 Contact (BL-R) Assy, Contact (CL-R) Assy Remove the gear one-way (Z30). (See 3.3.14) Remove the motor assy BT. (See 3.3.15) Remove the high voltage power supply unit. (See 3.3.33) Remove the shaft link. (See 3.3.35) [Removal of the contact (BL-R) assy] Unscrew 2 screws 1 and unplug the cable 2, then remove the contact (BL-R) assy 3.

  • Page 87: Contact (Bl-L) Assy, Contact (Cl-L) Assy

    3.3.37 Contact (BL-L) Assy, Contact (CL-L) Assy Remove the shaft link. (See 3.3.35) [Removal of the contact (BL-L) assy] Unscrew 2 screws 1 then remove the contact (BL-L) assy 2. [Removal of the contact (CL-L) assy] Unscrew 2 screws 3 then remove the contact (CL-L) assy 4. Contact (CL-L) Assy Contact (BL-L) Assy Figure 3.3.37 Contact (BL-L) Assy, Contact (CL-L) Assy...

  • Page 88: Contact Sb Assy

    3.3.38 Contact SB Assy Remove the contact (BL-L) assy and contact (CL-L) assy. (See 3.3.37) Unscrew 3 screws 1 then remove the plate blink 2. Unplug 7 codes 3. Unscrew 3 screws 4 then remove the contact SB assy 5. Figure 3.3.38 Contact SB Assy 3 - 45...

  • Page 89: Pxc Pcb

    3.3.39 PXC PCB Remove the contact (BL-R) assy and contact (CL-R) assy. (See 3.3.36) Remove the contact (BL-L) assy and contact (CL-L) assy. (See 3.3.37) Remove the hopping motor. (See 3.3.19) Remove the motor assy BT. (See 3.3.15) Remove the gear heat assy. (See 3.3.12) Remove the roller assy hopping.

  • Page 90: Heat Unit Assy

    3.3.40 Heat Unit Assy Open the stacker cover. Release the lock by turning down the lever lock heat guides (blue) on both sides, then lift the heat unit assy 1 and remove it. Lever Lock Heat Guide Figure 3.3.40 Heat Unit Assy 3 - 47...

  • Page 91: Oil Roller Assy

    3.3.41 Oil Roller Assy Remove the heat unit assy. (See 3.3.40) Release the lock by turning down the lever in the arrow (A) direction, then slide the oil roller assy 1 with its right side lifted and remove it. Lever Figure 3.3.41 Oil Roller Assy 3 - 48...

  • Page 92: Lever Lock Heat (L)/(R), Guide Side Heat, Spring Lock

    3.3.42 Lever Lock Heat (L)/(R), Guide Side Heat, Spring Lock Removing methods for right side and left side of each part are the same. Here describes the method for right side. Remove the heat unit assy. (See 3.3.40) Unscrew 2 screws 1 then remove the guide side heat 2. Remove the E-ring 3 then lever lock heat (R) 4.

  • Page 93: Pxl Pcb

    3.3.43 PXL PCB Remove the paper eject assy. (See 3.3.3) Remove the belt cassette assy. (See 3.3.32) Remove the heat unit assy. (See 3.3.40) Unplug the cable 1 and the screw 2, then remove PXL PCB 3. Release the lock of the claw then remove the sensor cover 4. Figure 3.3.43 PXL PCB 3 - 50...

  • Page 94: Heat Unit Guide Assy

    3.3.44 Heat Unit Guide Assy Remove the cover assy rear. (See 3.3.1) Remove the paper eject assy. (See 3.3.3) Remove the gear heat assy. (See 3.3.12) Remove the belt cassette assy. (See 3.3.32) Open the stacker cover and remove the heat unit assy. (See 3.3.40) Unscrew 4 screws 1 then remove the heat unit guide assy 2.

  • Page 95: Holder Led Assy, Led Head

    3.3.45 Holder LED Assy, LED Head Unplug the cable 1. Remove the LED head 3 by spreading the holder LED assy 2 a little bit. (Be careful not to lose the spring 4 which slips off together.) Remove the holder LED assy 2 by spreading the A-part of the guide holder a little bit with a flat blade screwdriver.
  • Page 96 ADJUSTMENT...

  • Page 97: Adjustments

    ADJUSTMENTS Adjustments are carried out by key operations on the operator panel, by software operation panel, and by EEPROM of PU (PXS-PCB) setting. This page printer supports three maintenance modes. Select and set a maintenance mode fit for the adjustment. Maintenance Modes and Their Functions 4.1.1 User maintenance mode...
  • Page 98 (d) Fuser count reset Resets the fuser life after the fuser unit is replaced. (e) Belt count reset Resets the belt life after the belt unit is replaced. (f) Oil roller count reset Resets the oil roller life after the oil roller unit is replaced. (g) Resource save area Sets the resource saving area.
  • Page 99 User maintenance mode memu system Category Selection After pressing After completing the process ENTER MENU MENU MENU RESET RESETTING RESET HEX DUMP ON-LINE HEX DUMP YELLOW DRMCNT YELLOW DRMCNT YELLOW DRMCNT RESET RESETTING RESET MAGENTA DRMCNT MAGENTA DRMCNT MAGENTA DRMCNT RESET RESETTING RESET...
  • Page 100 Category Selection DF After pressing After completing the process ENTER Y ADJUST 0 mm SETTING EEPROM +0.25 mm +0.50 mm +2.00 mm -2.00 mm -1.75 mm -0.25 mm YELLOW DARKNESS SETTING EEPROM MAGENTA DARKNESS SETTING EEPROM CYAN DARKNESS SETTING EEPROM BLACK DARKNESS SETTING EEPROM SETTING...

  • Page 101: System Maintenance Mode

    4.1.2 System maintenance mode To set the system maintenance mode, turn on the power switch of the page printer while pressing on the Recover key. Note: The system maintenance mode is hidden and not available to the user. To exit this mode, press the ONLINE switch except during rolling ASCII continuous printing. Then the RUN mode is set.
  • Page 102 System Maintenance mode menu system Category Selection DF After pressing After completing the process ENTER PAGE CNT nnnnnn PAGE PRT DISABLE ENABLE CONT PRT CONT PRT CONT PRT PRINTING CANCELLED (ON LINE SW Press) EEPROM EEPROM EEPROM RESET RESETTING RESET HSPERR RECOVER SETTING...

  • Page 103: Engine Maintenance Mode

    4.1.3 Engine maintenance mode To set the engine maintenance mode, turn on the power switch of the page printer while pressing on the ENTER and FORM FEED keys. The engine maintenance mode is set and “ENG MNT” is displayed on-screen. Note: The engine maintenance mode is hidden and not available to the user.
  • Page 104 Engine maintenance mode memu system (1/2) Category Selection DF After pressing After completing the process ENTER YELLOW LED HEAD No.1 SETTING EEPROM No.2 No.16 No.17 No.32 MAGENTA LED HEAD No.1 SETTING EEPROM No.2 No.16 No.17 No.32 CYAN LED HEAD No.1 SETTING EEPROM No.2 No.16...
  • Page 105 Engine maintenance mode menu system (2/2) Category Selection DF After pressing After completing the process ENTER YELLOW DRMCNT nnnn Yellow DRMCNT T nnnnnnn MAGENTA DRMCNT nnnn Magenta DRMCNT T nnnnnnn CYAN DRMCNT nnnn Cyan DRMCNT T nnnnnnn BLACK DRMCNT nnnn Black DRMCNT T nnnnnnn FUSER COUNT...

  • Page 106: Adjustments After Parts Replacement

    Adjustments after Parts Replacement Adjustments required after parts replacement are listed below. Adjustment and correction of color deviations are always required after parts are replaced. Part replaced Adjustment required LED head Set the LED head driving time and correct color deviations. Drum cartridge (Y, M, C, B, and K) Reset the drum counter and correct color deviations.
  • Page 107 Find a parameter value corresponding to the illumination level of the LED head in the table below. Illumination Level - LED Driving Time table Parameter value Illumination level Parameter value Illumination level (displayed on LCD) of LED head (displayed on LCD) of LED head 53 - 57 145 - 154...

  • Page 108: Color Deviation Correction

    4.2.2 Color deviation correction After replacing a part of the page printer, be sure to check whether colors are matched. If not, correct the deviations. Method of correcting color deviations (a) Set the User Maintenance mode, select the Color Deviation Correction mode (COLOR REG ADJUST EXECUTE), and print out a color chart (PRINT PATTERN).
  • Page 109 COLOR REG ADJUST Print a sheet of displaced EXECUTE color check pattern PRINT PATTERN ENTER MENU ADJUST ADJUST MENU MENU MENU ADJUST MENU MENU ADJUST ENTER ADJUST Press ENTER Key to determine MENU MENU ADJUST ADJUST MENU MENU ADJUST MENU MENU ADJUST ADJUST...
  • Page 110 olor check pattern 4 - 14...

  • Page 111: Periodic Maintenance

    PERIODIC MAINTENANCE...

  • Page 112: Periodically Replaced Parts

    PERIODIC MAINTENANCE Periodically Replaced Parts We recomend user that as specified, the parts shall be replaced periodically. (If not replaced, the printout quality may not be assured and in extreme cases, the page printer may be in trouble.) Parts Name Display of warning condition Recommend condition for replacement Adjustment after replacement...

  • Page 113: Troubleshooting Procedures

    TROUBLESHOOTING PROCEDURES...

  • Page 114: Troubleshooting Tips

    TROUBLESHOOTING PROCEDURES 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. 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...

  • Page 115: Preparation For Troubleshooting

    Preparation for Troubleshooting (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. Troubleshooting Flow If troubles should develop in this printer, troubleshoot in the following procedure flow: Troubles Troubles...
  • Page 116 Table 6.1 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Daily status Undefined Undefined Undefined Undefined Displayed when the page printer is powered on. Normal operation When powered on, the page printer turns on LEDs for about one sec- ond to check whether the LEDs and the LCD are normal.
  • Page 117 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Daily status TNR SNS ******* Undefined Indicates that Toner sensor is abnormal when page This massage is cleared when the counter is above thirty. (The LED of the color lights) drum is properly positioned or sensor lever which is exchanged correspond to the LED color lights.
  • Page 118 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Daily status PRINT MENU Undefined Undefined Undefined Undefined Blink or ON Undefined Prints out a menu setting. Normal operation This operation is started by a command when the READY LED is on or by a switch when the READY LED is blinking.
  • Page 119 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Daily status WASTE TONER BOX Undefined Undefined Undefined Undefined Blink Indicates that the box toner Assy has not been This error is recovered when the box installed. toner Assy is installed. Printing is NOT INSTALLED suppressed until the box toner assembly is installed.
  • Page 120 If this error oc- curs frequently, go to 6.5.2. Interface OKI HSP I/F CARD Undefined Undefined Undefined Undefined Blink Indicates that the OKI HSP interface card is being The page printer recovers automati- reset. cally when resetting is complete. Error RESETTING...
  • Page 121 ERROR HOST I/F Undefined Undefined Undefined Undefined Blink Indicates that a fatal OKI HSP interface error has The page printer recovers from the occurred. error when the RECOVER switch is OKI HSP xx pressed. If this error occurs fre- xx=10: Interface timeout...
  • Page 122 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Controller ERROR Undefined Undefined Undefined Undefined Blink Code Details of error Remedy (nn) Error Indicates that an error was found Turn on the power of the page printer again. in the program ROM by the pro- If this error still occurs, replace the program gram ROM check.
  • Page 123 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Controller ERROR Blink Blink Blink Blink Blink Code Details of error Remedy (nn) Error Indicates that Toner sensor is abnormal when page counter is below thirty.(alarm) Indicates that a timeout occurred Check the connection between the main Undefined Undefined...
  • Page 124 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Controller ERROR Undefined Undefined Undefined Undefined Blink Code Details of error Remedy (nn) Error Humidity sensor error Make sure that the relative humidity stays 0% < h < 95%. (the subsequent contents are the same as those of [DA]) Waste-toner sensor error Re-mount the waste toner box and re-power...
  • Page 125 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Controller ERROR Undefined Undefined Undefined Undefined Blink Code Details of error Remedy (nn) Error Engine firmware lost control Turn on the power of the page printer again. If this error still occurs, replace the program ROM of the engine board (PX4 PCB) or the engine board.
  • Page 126 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Controller ERROR Undefined Undefined Undefined Undefined Blink Code Details of error Remedy (nn) Error Monitor error (Argument error) Turn on the power of the page printer again. If this error still occurs, replace the program ROM of the main board (PCR PCB) or the main board.
  • Page 127 Category LCD Status Message READY ATTENTION Trouble or Status Remedy Controller ERROR Undefined Undefined Undefined Undefined Blink Indicates that the controller error has occurred. Turn on the power of the page printer again. The error will be reset. Error CONTROLLER nn-aaaaaaaa Code Details of error...

  • Page 128: Lcd Message Troubleshooting

    Fan Motor Error Cannot receive data from parallel interface. Cannot receive data from OKI HSP interface. Note: When replacing the main board (PCR PCB) and the engine board (PX4 PCB), demount the EEPROM chips from the old board and remount them on the new main boards.
  • Page 129 The printer does not work normally after turned on the power of rhe printer. • Turn off the power of the printer, wait a few seconds, then turn on power again. • displayed on the LCD (for about 1 second)? •...
  • Page 130 2-1 Paper input jam (1st tray) • Does the paper reach the FF sensor 1 or 2? • Yes Remove the paper jam. Do the sensor levers (FF sensor 1, FF sensor 2) work right? • Replace the defective sensor lever (FF sensor 1, FF sensor 2). •...
  • Page 131 2-2 Paper input jam (Front feeder) • Is the paper jam immediately occur after the page printer is powered on? • Yes Is the paper jam occur FF sensor 2? Yes Remove the paper jam. • Do the sensor levers (FF sensor 2) work right? Replace the defective sensor lever (FF sensor 2 ).
  • Page 132 2-3 Paper feed jam • Is the paper jam immediately occur after the page printer is powered on? • Yes Is there jam med paper at the Write sensor? Yes Remove the paper jam. • Does the lever of the Write sensor work right? Replace the lever of Write sensor.
  • Page 133 • Is the resistance of belt motor about 7.1 ohms? Replace the belt motor. • Yes Check the gear engagement or replace the engine board. • Yes Check the gear engagement or replace the belt cassette Assy. • Does the leading edge of a paper pass by the Exit sensor? •...
  • Page 134 2-4 Paper Exit Jam • Is the paper jam immediately occur after the page printer is powered on? • Yes Is the jammed paper at the Exit sensor? Yes Remove the paper . • Does the sensor lever work correctly? Replace the defective sensor lever.
  • Page 135 Paper Size Error • Is the paper which being used under the specification? Use paper which is under the specification. Yes Is the paper jam med at the Lever regist sensor or the Write sensor? Yes Remove the paper. • Does the sensor levers (Lever regist sensor ) work correctly? Replace the defective sensor lever (Lever regist sensor).
  • Page 136 Image Drum Unit (IDU) Up/Down Error • Turn off power to the page printer, wait a few seconds, then turn on power again. • Each image drum unit (IDU) motor rotating for printout? • Is the value of IDU motor resistance about 7.1 ohms? Replace the defective IDU motor.
  • Page 137 Fusing Unit Error • Is the Fusing unit trouble occur immediately after the page printer is powered on? • Yes Is Heat roller thermistor open or shorted? (See Figure 6.1.) (Normal registance and temperature are about between 90 ohms the 700 ohms at room temperature between 0°C the 43°C) •...
  • Page 138 Fan Motor Error • Is the Low-voltage power supply fan rotating after the page printer is powered on? • Is +32V being supplied on the FU2 of the engine board (PX4 PCB)? • Is +32V being supplied on the power connector of the engine board (PX4 PCB)? 32V: Pin 7, 8, 9, 10 Check the connection of the cable or replace the low-voltage power supply.
  • Page 139 Cannot Receive Data from Parallel Interface. • Is “PARALLEL I/F” (in menu 1) set to “ENABLE”? Set the “PARALLEL I/F” (in menu 1) to “ENABLE.” • Is Parallel interface of the host computer set to “Bidirectional Communication”? Yes Set the “Bidirectional Communication” of “Parallel Interface” (in menu 2) to “ENABLE.” •...
  • Page 140 Yes Replace the OKI HSP I/F board. • Replace the main board. • Repaired? Yes End • The OKI HSP I/F board may be not defective. Check the settings of the host computer or the connection of the interface cables and the others. 6 - 27...

  • Page 141: Image Troubleshooting

    6.5.3 Image troubleshooting When the printout images are not satisfactory as shown below, take the troubleshooting steps given in this paragraph. Printout problem Reference flowchart No. Light or blurred images on the whole printout area (Figure 6.2-A) Dirty stained ground (Figure 6.2-B) No printout data on blank paper (Figure 6.2-C) Black stripe or lines in the vertical direction (Figure 6.2-D) White stripe or lines in the vertical direction (Figure 6.2-F)
  • Page 142 Light or blurred images on the whole printout area • Is toner low? (“TONER LOW” indicator on?) Yes Supply toner. • Specified paper? Use the specified paper. • Is the lens of the LED head dirty? Yes Clean the LED head lens. •...
  • Page 143 • Check the connection of the cables, replace the high-voltage power supply, or belt cassette assembly. Recovered? Yes End • Is Each terminal of each image drum unit connected correctly to the contact assembly? (See Figure 6.2.) Make the terminals be in contact with the contact assembly correctly. •...
  • Page 144 Dirty stained ground (Figure 6.2-B) • Each image drum exposed to external lights for a long time? Yes Replace the image drum unit or put the image drum unit in the printer and close the upper cover and wait for 15min. Note: After replacing the image drum unit, be sure to reset its counter.
  • Page 145 Check the connection of the cables or replace the low-voltage power supply. • Is +32V on pin 2 of the HVOLT connector of the engine board (PX4 PCB) being supplied? Replace the engine board. • Check the connection of the cables or replace the high-voltage power supply or belt cassette assembly.
  • Page 146 Void print out • Is each LED head assembly connected to the junction board (PD6 PCB) correctly? Check whether or not the connection of the cables or connect the LED assembly to the junction board (PD6 PCB) correctly. • Is +3.3V on the following pins of the HEADPOW connector of the junction board (PD6 PCB) being supplied? +3.3V: Pin 1, 2, 3, 4, 5, 6 •...
  • Page 147 • Is each terminal of each image drum unit connected to the contact assembly correctly? (See Figure 6.2.) Make the terminals be in contact with the contact assembly correctly. • Replace the the image drum unit. Notes: 1. When replacing the engine board (PX4 PCB), demount the EEPROM chip from the old engine board and remount it on the new one.
  • Page 148 Black stripe or lines in the vertical direction • Is each LED head assembly connected to the junction board (PD6 PCB) correctly? Connect the LED head assembly to the junction board correctly. • Check the connection of the cables or replace the LED head assembly. Is the problem recovered? Yes End •...
  • Page 149 White stripe or lines in the vertical direction • Is each LED head lens contaminated? Yes Clean the LED head lens. • Is each LED head assembly connected to the junction board (PD6 PCB) correctly? Connect the LED head assembly to the junction board (PD6 PCB) correctly. •...
  • Page 150 Poor Fusing (Image are blurred or peeled off when touched with finger.) • Is the paper under specification being used? Use the paper under the specification. • Is contacts of the fusing unit assembly connected correctly? Connect the contacts correctly. •...
  • Page 151 Cyclical printout defects (Figure 6.2-E) Possibly defective part Repairing 94.2 mm Image Drum Replace the image drum unit. 44.0 mm Developing Rooler Replace the image drum unit. 28.3 mm Toner Supply Rooler Replace the image drum unit. 28.3 mm Charging Roller Replace the image drum unit.
  • Page 152 Missing characters or synthesization colors • Is each LED head lens contaminated? Yes Clean the lens of LED head. • Is each LED head assembly connected to the junction board (PD6 PCB) correctly? Check the connection of the cables (between each LED head and the junction board) or connect the LED head cables to the junction board correctly.
  • Page 153 Make the terminals be in contact with the contact assembly correctly. • Replace the the image drum unit. Notes: 1. When replacing the engine board (PX4 PCB), demount the EEPROM chip from the old engine board and remount it on the new one. 2.
  • Page 154 Poor synthesization Colors • Correct color deviations of each LED head by “COLOR REG ADJUST EXECUTE.” Is the problem recoverd? Yes End • Are there any gear broken of the unit (Image drum unit gear assembly, front feeder assembly, belt unit assembly or belt motor assembly, etc.)? Yes Replace the broken gear assembly.
  • Page 155 Printout colors different from original colors • Is each LED head lens contaminated? Yes Clean the LED head lens. • Is each LED head assembly connected to the junction board (PD6 PCB) correctly? Check the connection of the cables (between each LED head and the junction board) or connect the LED head cables to the junction board correctly.
  • Page 156 Make the terminals be in contact with the contact assembly correctly. • Replace the the image drum unit. Notes: 1. When replacing the engine board (PX4 PCB), demount the EEPROM chip from the old engine board and remount it on the new one. 2.
  • Page 157 Figure 6.3 6 - 44...

  • Page 158: Wiring Diagram

    WIRING DIAGRAM...
  • Page 159 Unit Circuit Diagram Illustration Resistance White White Between pins 1 and 2: 7.1Ω Belt motor Between pins 3 and 4: 7.1Ω White White Yellow Yellow Between pins 1 and 2: 7.1Ω YIDU motor Between pins 3 and 4: 7.1Ω Yellow Yellow Between pins 1 and 2: 7.1Ω...
  • Page 160 Unit Circuit Diagram Illustration Resistance Blue Blue Between pins 1 and 2: 7.1Ω CIDU motor Between pins 3 and 4: 7.1Ω Blue Blue Black Black Between pins 1 and 2: 7.1Ω BIDU motor Between pins 3 and 4: 7.1Ω Black Black Orange Orange...
  • Page 161 Unit Circuit Diagram Illustration Resistance Brown Brown Between pins 1 and 2: 7.1Ω Heater motor Between pins 3 and 4: 7.1Ω Brown Brown White White Between pins 1 and 2: 7.1Ω FF motor Between pins 3 and 4: 7.1Ω White White...
  • Page 162 Unit Circuit Diagram Illustration Resistance +38 V White Fan 1 (To: Low Power FANALM-N Between pins 1 and 2: 700Ω supply) Black +38 V White Fan 2 FANALM-N (To: PX4-PCB) Between pins 1 and 2: 800Ω Black Thermostat Fusing unit Heater Lower side Between pins c and d: 205kΩ...

  • Page 163: Program/Font Rom Location

    Program/Font ROM Location (1) PCR-PCB PANEL MUPIS CENT 7 - 5...
  • Page 164 (2) PX4-PCB PXFIF FAN1 THERM RSENS POWER FAN2 7 - 6...
  • Page 165 (3) Power-Supply PCB DB-Y DB-M DB-C DB-B (4) PCO PCB 7 - 7...
  • Page 166 (5) PXF PCB FSENS JODEN PXFIF 7 - 8...

  • Page 167: Parts List

    PARTS LIST...
  • Page 168 Parts List Fig.8-1 8 - 1...
  • Page 169 Table.8-1 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40315201 Cover_Assy_Rear 40098401 Cover_Rear 40187501 Stacker_Faceup 40187601 Support_Stacker 40314801 Cover_Assy_Stacker 40315001 Cover_Assy_Side (R) Cover_Side (R) Frame_Side (R) 40098301 Cover_Front (R) 40314901 Cover_Assy_OP_Panel ODA(120V) 40314902 Cover_Assy_OP_Panel OEL(230V) 40314903 Cover_Assy_OP_Panel INT(230V) 40492601 Cover_Sub_Assy_OP_Panel 40098201 Cover_Front (L)
  • Page 170 Fig.8-2 8 - 3...
  • Page 171 Table.8-2 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40255201 Motor_Fan(80-25) 40303501 Frame_Eject_Assy 40303401 Guide_Paper_Eject_Assy 40410701 Frame_Upper_Assy See Fig.8-8 40018901 Power_Unit_ACDC_Switching ODA(120V) 40019001 Power_Unit_ACDC_Switching OEL/ODA(230V) 40311201 FDR_Unit__Front 40193501 Plate_FF_Link 40193601 Bracket_FF_Link 40303301 Guide_Paper_Input_Assy Replacement Kit (ODA) 40309801 Holder_Gear_Toner_Assy Replacement Kit (OEL) 40490801 Belt_Unit Replacement Kit (INT)
  • Page 172 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40370201 ID_Unit_C6C_ODAEPCFGI-BK Consumable: ODA(120V) 40370301 ID_Unit_C6C_ODAEPCFGI-YM Consumable: ODA(120V) 40370302 ID_Unit_C6C_ODAEPCFGI-MM Consumable: ODA(120V) 40370303 ID_Unit_C6C_ODAEPCFGI-CM Consumable: ODA(120V) 40370401 ID_Unit_C6C_OELEPCFGI-BK Consumable: OEL(230V) 40370501 ID_Unit_C6C_OELEPCFGI-YM Consumable: OEL(230V) 40370502 ID_Unit_C6C_OELEPCFGI-MM Consumable: OEL(230V) 40370503 ID_Unit_C6C_OELEPCFGI-CM Consumable: OEL(230V) 40191201 Sheet_Insuration PSW2W3-30C...
  • Page 173 Fig.8-3 8 - 6...
  • Page 174 Table.8-3 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40175701 Plate_Base 40096401 Guide_Belt(F) 40135301 Photo_Interrupter PP4076-5154P001 Lever_Paper_End 40450401 Sensor_Assy_Box_Toner 40171401 Frame_Side(L) 40171301 Frame_Side(R) 40308801 Contact_SB_Assy 40290201 Plate_Blind 40163401 Guide_Side_Heatunit 40163701 Spring_Lock(L) 40163702 Spring_Lock_Heat 40163501 Lever_Lock_Heatunit(L) 40163601 Lcver_Lock_Heatunit(R) 40383701 Limiter-2Way(L) 40383801 Limiter-2Way(R) 40335001...
  • Page 175 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 PB4043-4718P001 Screw 40162101 Guide_Assy_Heat_Unit 40175101 Stay_EP 40449401 Guide_Assy_Heat 40449701 Hopping_Roller_Boss_Assy 40097301 Guide_Paper_Input_A 40144301 Lever_Input_Sensor 40144401 Lever_2ndFeed_Sensor 40189601 Shaft_Hoppingroller(1st) 40450201 Bracket_Switch 40408601 Holder_Switch 40264401 Spring_Eject_Heat NK3-18-SUS Knock_Pinn 40447201 CONN_Cord_Wire 40388401 Bracket_Switch(Side) 40446501 InterLock_SW_Cable_Assy 40162201 Cover_Sensor...
  • Page 176 Fig.8-4 8 - 9...
  • Page 177 Table.8-4 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40324501 Cotact_(BL_L)Assy Includes Item2, 3 40278101 Plate_Earth(LK) PP4076-5308P001 Bearing 40324401 Contact_(CL_L)Assy Includes Item2, 3 40324601 Contact_BKT(BL_R)Assy Includes Item6 40135301 Photo_Interrupter 40309001 Contact_BKT(CL_R)Assy Includes Item6 40308501 Eraser_BKT_Assy 40324301 Eraser_BKT(KCM)_Assy 40167901 Shaft_Link 40132301 Lever_Link(R) 40132401...
  • Page 178 Fig.8-5 8 - 11...
  • Page 179 Table.8-5 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40310001 Gear_Heat_Assy 40392301 Motor_Assy_Belt 40309101 Main_Motor(A)_Assy 40309201 Main_Motor(B)_Assy 40208101 Gear_Oneway(Z30) 40664401 Lever_Up/ Dn2(YMC) 40175001 Bracket_Hopping_Motor 40143401 Gear_Idle(92) 40143501 Gear_Feed(118/ 17) 40164401 Gear_Oneway(Z48/ 74) 40124101 Motor_Pulse(ID) EEPROM is excluded 40634102 Board-PX4 40437201 Board-PXF 40233901...
  • Page 180 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40135301 Photo_Interrupter 40448901 Gear_Heat_Mech_Assy 40664501 Lever_Up/ Dn2(K) 40583901 Plate_Earth(LKR) 40704901 Plate_Shield(CU) 40447201 CONN_Cord_Wire (12) Designated in Fig.8-3 8 - 13...
  • Page 181 Fig.8-6 8 - 14...
  • Page 182 Table.8-6 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40187901 Frame_Upper 40449101 Holder_LED_Assy 40187801 Guide_Holder 40293601 Spring_Head 40197705 Spring_EP 40536001 Board_PD6 40394201 Plate_Oil_Sensor 40171702 AMP2P_MSW 40408601 Holder_SW 40449301 Plate_Support_(L)Assy 40197401 Torsion_Spring(A) 40449201 Plate_Support_(R)Assy 40218301 Torsion_Spring(B) LP-6665-1 Flat_Cable_Clip 2381005P0001 HCUJ(1.25)-14F-140-10S6(B)-MI92896) 40547301 LED_Head_Unit-51M (40456101)
  • Page 183 Fig.8-7 8 - 16...
  • Page 184 Table.8-7 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40449801 Guide_Cassette(R)Sub_Assy PP4076-5360P001 Spring_Detector 220A1866P0140 Square_shaped_connector 40177701 Connector_Cord 40368301 Board-PXC PP4076-5742P001 Plate_Earth (link) 8 - 17...
  • Page 185 Fig.8-8 8 - 18...
  • Page 186 Table.8-8 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40165301 Frame_Motor(ID1) 40124101 Motor_Pulse(ID) 40129901 Gear_(25/75) 40130701 Gear_Helical(67/43/24) 40130601 Gear_Helical(67/18) 40130201 Gear_Z53/44 40129501 Bracket_Support(ID) 40135301 Photo_Interrupter 40308601 Toner_Sensor(Y)_Assy 40135301 Photo_Interrupter 40449601 Sensor_Assy_T(Y) 8 - 19...
  • Page 187 Fig.8-9 8 - 20...
  • Page 188 Table.8-9 Reccomended Q'ty Parts No. Name Q'ty/U Remarks 1000 2000 40129401 Frame_Motor(ID) 40124101 Motor_Pulse(ID) 40129901 Gear_(25/75) 40130701 Gear_Helical(67/43/24) 40130601 Gear_Helical(67/18) 40130201 Gear_Z53/44 40129501 Bracket_Support(ID) 40135301 Photo_Interrupter 8 - 21...

  • Page 189: Appendix A

    Appendix A CENTRONICS PARALLEL INTERFACE Connector • Printer side : 36-pin receptacle (Female) Type 57RE-40360-830B-D29 (made by Daiichi Denshi) or equivalent • Cable side : 36-pin plug (Male) Type 57-30360 (made by Daiichi Denshi) or equivalent Plug-552274-1 (AMP), 552073-1 (AMP) or equivalent Cable •...
  • Page 190 Table of parallel I/F signals Pin No. Signal name Signal direction Functions → PR Parallel data sampling strobe DATA STROBE DATA BIT - 1 DATA BIT - 2 DATA BIT - 3 → PR DATA BIT - 4 Parallel input data DATA BIT - 5 DATA BIT - 6 DATA BIT - 7...
  • Page 191 Signal level • : 0 V to +0.8 V • HIGH : +2.4 V to +5.0 V Specifications Item Description Mode Compatibility mode, Nibble mode, ECP mode Data bit length 8 bits: Compatibility mode, 4 bits: Nibble mode, 9 bits: ECP mode Input prime Valid/Invalid Receive buffer...
  • Page 192 Appendix B High Capacity Second Paper Feeder Maintenance B - 1...
  • Page 193 PREFACE This Maintenance Manual is intended for the service personnel and describes the field maintenance methods for High Capacity Second Paper Feeder option of OKIPAGE 8c LED PagePrinter. Refer to the USER'S MANUAL for the equipment handling and operation methods. B - 2...
  • Page 194 CONTENTS OUTLINE ....................B - 4 1.1 Functions ..................B - 4 1.2 External View and Component Names ........... B - 4 MECHANISM DESCRIPTION ..............B - 5 2.1 General Mechanism ................ B - 5 2.2 Hopper Mechanism ................. B - 6 PARTS REPLACEMENT ................

  • Page 195: Outline

    OUTLINE Functions The printer is mounted on top of this High Capacity Second Paper Feeder, 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: •...

  • Page 196: Mechanism Description

    MECHANISM DESCRIPTION General Mechanicsm The sheet at the very top of the stack in the paper cassette is fed into the printer, one sheet at a time, when the High Capacity Second Paper Feeder receives the signal from the printer. (1) First, the hopping motor rotates in the direction of arrow A.

  • Page 197: Hopper Mechanism

    Hopper Mechanism The hopper automatically feeds the printer with the paper being set, single sheet at a time. When the paper is loaded in the paper cassette, it is then transported by the hopping motor, carrying forward only a single sheet caught by hopping roller at a time. B - 6...

  • Page 198: Parts Replacement

    PARTS REPLACEMENT 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. Precautions Concerning Parts Replacement (1) Parts replacements must be carried out, by first turning the printer power switch off “O”...
  • Page 199 Service Tools Q'ty Place of use Remarks No. 1-100 Philips screwdriver 2~2.5 mm screws No. 2-100 Philips screwdriver 3~5 mm screws No. 3-100 screwdriver No. 5-200 screwdriver Digital multimeter Pliers Handy cleaner Connector remover OKI P/N: 4PP4076-5395P1 B - 8...

  • Page 200: Parts Layout

    Parts Layout This section describes the layout of the main components. Cover Upper Hopping motor Hopping gear (One-way) Control board (AOLT-PCB) Feed gear Upper plate (One-way) Second side frame (L) Second side frame (R) Front panel Idle roller Hopping roller Feed roller Cover Lower B - 9...

  • Page 201: Parts Replacement Methods

    Parts Replacement Methods This section describes the parts replacement methods for the components listed in the disassem- bly order diagram below. High Capacity Second Paper Feeder Idle rollers (3.3.1) AOLT-PCB (3.3.2) Hopping motor (3.3.3) Feed roller (3.3.4) Hopping roller (3.3.5) Side frame (L) assy (3.3.6) Side frame (R) assy (3.3.7) B - 10...

  • Page 202: Idle Rollers

    3.3.1 Idle rollers (1) Remove 16 screws 6 and remove Cover Upper 4 and Cover Lower 5. (1) Remove two screws 1 and remove the front panel assy 2. (2) Remove two idle rollers 3. B - 11...

  • Page 203: Aolt-Pcb

    3.3.2 AOLT-PCB (1) Remove 16 screw 1 and remove the Cover Lower 2, Cover Upper 6. (2) Remove three connectors 3 and three screws 4. (3) Remove the AOLT-PCB 5. B - 12...

  • Page 204: Hopping Motor

    3.3.3 Hopping motor (1) Remove the Cover Upper and Cover Lower (see 3.3.1 step1). (2) Remove the front panel assy (see 3.3.1 step2). (3) Remove two connectors 2 and two screws 3, then remove the hopping motor assy 4. Three gears 5 and the connecting lever 6, as well as the wave washer 7 all come off at the same time, so be careful not to lose them.

  • Page 205: Feed Roller

    3.3.4 Feed roller (1) Remove 16 screws and remove Cover Upper and Cover Lower (see 3.3.1 step1). (2) Remove the front panel assy (see 3.3.1 step2). (3) Remove the AOLT-PCB (see 3.3.2). (4) Remove the hopping motor assy (see 3.3.3). (5) Remove the latch on the feed roller gear 1 and remove the feed roller gear 1.

  • Page 206: Hopping Roller Rubber

    3.3.5 Hopping roller (1) Remove the feed roller (see 3.3.4). (2) Remove the latch on the hopping roller gear 1 and remove the hopping roller gear 1. The bearing F 2 comes off at the same time, so be careful not to lose it. (3) Remove the latch on bearing L 3 and remove the bearing L 3.

  • Page 207: Side Frame (L) Assy

    3.3.6 Side frame (L) assy (1) Remove the hopping roller (see 3.3.5). (2) Remove three screws 1 and remove the upper plate 2. (3) Remove the cassette lock spring 3, link 4, pull block 5 (note the directions of the hooks of the cassette lock spring 3).

  • Page 208: Side Frame (R) Assy

    3.3.7 Side frame (R) assy (1) Remove the hopping roller (see 3.3.5). (2) Remove three screws 1 and remove the upper plate 2. (3) Remove the cassette lock spring 3, link 4, pull block 5 and earth plate 6 (note the directions of the hooks of the cassette lock spring 3).

  • Page 209: Troubleshooting

    TROUBLESHOOTING Precautions Prior to the Troubleshooting (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. Preparations for the Troubleshooting (1) Display on the Operator panel The status of the problem is displayed on the LCD (Liquid Crystal Display) on the Operator...

  • Page 210: Troubleshooting Method

    Troubleshooting Method 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 Message List according to the (see 4.3.1) Troubleshooting Flow (see 4.3.2) 4.3.1...

  • Page 211: Troubleshooting Flow

    4.3.2 Troubleshooting Flow • ( JAM error ) Paper Input Jam • Does paper jam occur at the inlet when the power is turned on? • YES Is the paper located above the sensor plate (Inlet)? • YES Remove the paper. •...

  • Page 212: Connection Diagram

    CONNECTION DIAGRAM Interconnection Diagram Hopping motor 1 OP-M1A 2 OP-M1B CN24 3 OP-M2A 4 OP-M2B AOLT - PCB CN22 CN23 To Printer To Cassette switch board (AOLD-PCB) B - 21...

  • Page 213: Pcb Layout

    PCB Layout AOLT-PCB B - 22...

  • Page 214: Parts List

    PARTS LIST B - 23...
  • Page 215 Table 6-1 High Capacity Second Paper Feeder Description Part No. Q’ty Remarks AOLD-PCB 4YA4046-1646G11 Feed roller 3PB4076-5707P1 Hopping motor 4PB4076-5718P1 Hopping gear 4PB4043-4486P1 Hopping roller assy 4PA4076-5775G1 Feed roller gear 4PB4043-4488P1 Feed roller bearing 4PP4043-4489P1 Feed idle gear 4PP4076-5712P1 Planet gear 4PP4043-4491P1 AOLT-PCB 4YA4046-1645G11...

  • Page 216: Appendix C

    Appendix C Soft Opepane Spec C - 1...
  • Page 217 People to People Technology Oki Data Corporation 4-11-22, Shibaura, Minato-ku, Tokyo 108, Japan Tel: (03) 5445-6162 Fax: (03) 5445-6189 40029803TH 7-98 Printed In Japan...

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