Okidata C9300, C9500 MAINTENANCE MANUAL
Oki Data CONFIDENTIAL
C9500 /C9300
Color LED Page Printer
MAINTENANCE
MANUAL
ODA/OEL/INT
2003-07-10 Rev.4
41956001TH Rev.4 1 / 198
Document Revision History
Oki Data CONFIDENTIAL
Rev.No. Date
No.
Corrected items
Page Description of change
Person in
change
1 2002-10-23
2 2002-11-29 NP11 Haruyama
3 2003-06-06 2.3, 7 22,157 Part No. of the Control Panel Bezel ME4 Ueda
4 2003-07-14 Add VE Version CU CN11 Yamanaka
41956001TH Rev.4 2 /
Oki Data CONFIDENTIAL
PREFACE
This maintenance manual provides procedures and techniques for the troubleshooting, maintenance, and
repair of C9500/C9300.
This manual is written for maintenance personnel, but it should always be accompanied with the C9500/
C9300 User’s Manual for procedures for handling and operating C9500/C9300. For repairing each
component of C9500/C9300, see the Troubleshooting manual.
[Notices]
The contents of this manual are subject to change without prior notice.
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 C9500/C9300 in any manner.
[Warning]
Many parts of C9500/C9300 are very sensitive and can be easily damaged by improper servicing. We
strongly suggest that C9500/C9300 be serviced by OKI’s authorized technical service engineers.
41956001TH Rev.4 3 /
Oki Data CONFIDENTIAL
CONTENTS
1. SPECIFICATIONS ............................................................................................ 7
1.1 Basic System Configuration............................................................................................. 7
1.2 Printer Engine Specifications ........................................................................................... 8
1.3 Option Configuration ........................................................................................................ 9
1.4 Specifications................................................................................................................. 11
2. PARTS REPLACEMENT................................................................................13
2.1 Precautions in Replacing Parts...................................................................................... 13
2.2 Parts Layout................................................................................................................... 15
2.3 Replacing Parts..............................................................................................................22
2.3.1 Top cover.......................................................................................................... 23
2.3.2 LED Head / LED Spring / Post-Guide............................................................... 24
2.3.3 Top Cover Unit ................................................................................................. 25
2.3.4 Control Panel Assy / Control Panel Bezel / LED Control PWB / Toner Sensor /
Stack Full Sensor / Control Panel / Control Panel Tape Harness / Eject Roller26
2.3.5 Top Cover Handle / Top Cover Latch / Top Cover Latch Spring...................... 27
2.3.6 Eject Guide Assy .............................................................................................. 28
2.3.7 Cassette Assy / Cover-Blind / Side Cover Assy ............................................... 29
2.3.8 Feed Roller ....................................................................................................... 30
2.3.9 Left Side Cover................................................................................................. 31
2.3.10 Face Up Tray.................................................................................................... 32
2.3.11 Front Cover....................................................................................................... 33
2.3.12 Rear Cover ....................................................................................................... 34
2.3.13 Multipurpose Tray Assy / Multipurpose Tray Cover Assy / Link /
Multipurpose Tray Top Cover / Multipurpose Tray Drive Gear / OHP Sensor. 35
2.3.14 Drum Contact Assy........................................................................................... 37
2.3.15 Media Thickness Sensor Assy......................................................................... 38
2.3.16 Registration Roller Assy (A) / Registration Drive Gear (A)............................... 39
2.3.17 Registration Roller Assy (B) ............................................................................. 40
2.3.18 Registration Clutch / Registration Motor Assy.................................................. 41
2.3.19 ID Cooling Fan.................................................................................................. 42
2.3.20 Color Registration Sensor Assy........................................................................ 43
2.3.21 Duplex Guide Assy........................................................................................... 44
2.3.22 Electrical Chassis / Electrical Chassis Cooling Fan ......................................... 45
2.3.23 Print Engine Controller PWB ............................................................................ 46
2.3.24 Printer Unit Chassis.......................................................................................... 47
2.3.25 Entrance Cassette Sensor Actuator................................................................. 48
2.3.26 Entrance Sensor PWB (R71)............................................................................ 49
2.3.27 Entrance MT Sensor Actuator / Entrance Belt Sensor Actuator /
Entrance Waste Toner Sensor Actuator.......................................................... 50
2.3.28 Main Cooling Fan (PULL) Assy / Main Cooling Fan (PUSH) /
Fuser Eject Roller ............................................................................................. 51
2.3.29 Eject Sensor Assy ............................................................................................ 52
2.3.30 Fuser Latch Handle (L)..................................................................................... 53
2.3.31 Belt Motor Assy ................................................................................................ 54
2.3.32 Fuser Latch Handle (R) .................................................................................... 55
2.3.33 Main Motor Assy............................................................................................... 56
2.3.34 Contact Assy / Side Plate Assy........................................................................ 57
2.3.35 Low-voltage Power Unit.................................................................................... 58
2.3.36 High-voltage Power Unit................................................................................... 59
2.3.37 Main Feeder Assy............................................................................................. 60
2.3.38 Fuser Unit......................................................................................................... 61
41956001TH Rev.4 4 /
Oki Data CONFIDENTIAL
2.3.39 Belt Unit............................................................................................................ 62
2.3.40 Duplex Unit....................................................................................................... 63
2.3.41 CU Assy............................................................................................................ 64
3. Adjustment .................................................................................................... 67
3.0 System Maintenance MENU.......................................................................................... 67
3.0.1 ID Check Pattern Printing ( " TEST PRINT MENU " item )............................... 68
3.1 Maintenance Mode and Functions................................................................................. 68
3.1.1 Maintenance menu........................................................................................... 68
3.1.2 Engine maintenance mode............................................................................... 70
3.1.2.1 Operator panel .................................................................................. 70
3.1.2.2 General self-diagnostic mode (Level 1) ............................................ 70
3.1.2.2.1 Entering self-diagnostic mode (Level 1)............................. 71
3.1.2.2.2 Exiting self-diagnostic mode ............................................. 71
3.1.2.3 Switch scan test ................................................................................ 71
3.1.2.4 Motor clutch test................................................................................ 75
3.1.2.5 Test print ........................................................................................... 78
3.1.2.6 NVM initialization............................................................................... 82
3.1.2.7 Consumable counter display............................................................. 83
3.1.2.8 Consumable counter display - continuous ........................................ 83
3.1.2.9 Error Messages and their details ...................................................... 84
3.1.3 Various print jobs with single printer unit attached with a controller ................. 89
3.2 Adjustments after Parts Replacement ........................................................................... 90
3.2.1 Precautions in replacing engine control board ................................................. 90
3.2.2 Precautions in replacing EEPROM................................................................... 90
3.2.3 EEPROM replacement after CU board replacement........................................ 91
3.2.4 Destination Setting (Checking Method: Printing Demo Page).......................... 91
3.2.5 Recovery Flash ROM data on CU board.......................................................... 92
3.2.6 Notes on replacing Oki LAN8100e or CU boards equipped with Oki LAN8100e . 92
3.3 Adjusting the Density ..................................................................................................... 92
3.4 Paper Thickness Detection Sensitivity Adjustment and Media Thickness Detection
Value Check................................................................................................................... 93
3.4.1 Applicable Operating Systems and Interfaces, and File Required ................... 93
3.4.2 Setting .............................................................................................................. 94
3.4.2.1 Menu Setting ..................................................................................... 94
3.4.2.2 Media Setting .................................................................................... 96
3.4.2.3 Sensitivity Adjustment ....................................................................... 97
3.4.2.4 Actions for NG Sensitivity Adjustment............................................... 98
3.4.3 Inputting the density of the calibration chip for density detection ..................... 99
3.4.3.1 Density Adjustment Menu Setting ..................................................... 99
3.4.4 Electronic Serial Number Input....................................................................... 101
4. Regular Maintenance .................................................................................. 102
4.1 Parts Replaced Regularly ............................................................................................ 102
4.2 Cleaning....................................................................................................................... 102
4.3 Cleaning of LED Lens Array ........................................................................................ 102
4.4 Cleaning Pick-up Roller ............................................................................................... 102
5. Troubleshooting Procedures ..................................................................... 103
5.1 Precautions before troubleshooting ............................................................................. 103
5.2 Precautions before handling an abnormal image ........................................................ 103
5.3 Precautions upon handling an abnormal image........................................................... 103
5.4 Preparing for Troubleshooting ..................................................................................... 104
5.5 Troubleshooting Procedure.......................................................................................... 104
41956001TH Rev.4 5 /
Oki Data CONFIDENTIAL
5.5.1 LCD message list ........................................................................................... 105
5.5.2 Preparing for troubleshooting ......................................................................... 111
5.5.3 Troubleshooting for abnormal images ............................................................ 122
5.6 Fuse check................................................................................................................... 137
6. WIRING DIAGRAM...................................................................................... 138
6.1 Resistance Check ........................................................................................................ 138
6.2 Parts Layout on Boards ............................................................................................... 144
7. Parts List...................................................................................................... 152
APPENDIX A INTERFACE SPECIFICATIONS ................................................. 171
1. Parallel Interface Specifications................................................................................... 171
1.1 Parallel Interface...................................................................................................
1.2 Parallel Interface Connector and Cable.......................................................... 171
1.3 Parallel Interface Level ................................................................................... 171
1.4 Timing Charts ................................................................................................. 172
1.5 Parallel I/F Signals.......................................................................................... 173
2. Universal Serial Bus (USB) Interface Specifications.................................................... 174
2.1 USB Interface ................................................................................................. 174
2.2 USB Interface Connector and Cable .............................................................. 174
2.3 USB Interface Signals .................................................................................... 174
APPENDIX B 2ND/3RD TRAY, HIGHT CAPACITY TRAY UNIT ..................... 175
APPENDIX C C7100/7300/9300/9500 SERIES ERROR MESSAGES .............185
1. C7100/7300/9300/9500 Series (Error messages) ....................................................... 185
2. C7100/7300/9300/9500 Series (Error messages : Related to Color, Media Detect) ... 192
3. C7100/7300/9300/9500 Series (Warning messages : Related to usage, media) ........ 195
4. C7100/7300/9300/9500 Series (Warning messages : Job Account) ........................... 196
5. C7100/7300/9300/9500 Series (Other Warning) ......................................................... 197
41956001TH Rev.4 6 /
M
M
M
M
M
M
M
M
LED Head
Centronics I/F
USB I/F
2 × Option Slots
Junction Board
Pulse Motor
Engine Control
Low Voltage
Power Unit
Fuser
Unit
High Voltage
Power Unit
2nd/3rd Tray
High Capacity
Tray
Duplex
Unit
Belt
Unit
<Sensors, Switches and Thermistors>
Paper size sensor (4 bits)
Paper empty sensor
Paper near empty sensor
MT paper empty sensor
FF home switch
Loading sensor 1
Loading sensor 2
C-ID
Unit
M-ID
Unit
Y-ID
Unit
K-ID
Unit
C ID M ID Y ID K IDBelt Heat
MT/
Registration
Hopping
Operator Panel
2 × ROM
DIMMs
3 × RAM
DIMM
IDE
I/F(HDD)
DC Fan
Note
Note Option Slot:
LAN Card made by JCI
< advanced Sensors>
Media Thickness Detection
Density Detection
Color Misalignment Detectin
1. SPECIFICATIONS
1.1 Basic System Configuration
The basic system configuration of C9500/C9300 is illustrated in Figure 1.1.
Oki Data CONFIDENTIAL
Figure 1.1
41956001TH Rev.4 7 /
1.2 Printer Engine Specifications
The inside of the printer is composed of the followings:
• Electrophotographic Processor
• Paper Paths
• Controller Block (CU and PU)
• Operator Panel
• Power Units (High-Voltage Unit and Low-Voltage Unit)
Figure 1-2 shows the printer configuration.
Oki Data CONFIDENTIAL
Figure 1.2
41956001TH Rev.4 8 /
1.3 Option Configuration
Note: Don’t use one for
C9200/C9400
The followings are available as options on C9500/C9300.
(1) 2nd Tray/ 3rd Tray
(2) Duplex Unit
Oki Data CONFIDENTIAL
Note: Don’t use one for
C9200/C9400
Note: Don’t use one for
C9200/C9400
(3) High-Capacity Tray
(4) Expansion Memory 64/128/256/512MB
(5) Internal Hard Disk
Note: Don’t use one for
C9200/C9400
Note: Don’t use one for
C9200/C9400
(6) Ethernet Board
Note: Don’t use one for
41956001TH Rev.4 9 /
C9200/C9400
(7) Finisher Unit
(8) Simplified Color Copy Unit * Equipped with exclusive auto feeder
Oki Data CONFIDENTIAL
(9) Dual-Purpose Finisher and Copy Unit Table, and Copy Unit Extension Rack
Color Copy Unit Extension Rack
Dual-Purpose Finisher and Copy Unit Table
(10) 2nd/3rd Tray Unit on Casters
Note: Don’t use one for
C9200/C9400
41956001TH Rev.4 10 /
1.4 Specifications
(1) External Dimensions Height: 460mm Width: 666mm Length: 626mm
(2) Weight 72 kg
(3) Paper Type: Ordinary paper and transparencies (Recommended: ML
(4) Print Speed Color: 30 pages per minute
(A4 LEF) (Transparency: Pages per minute)
Oki Data CONFIDENTIAL
OHP01)
Size: Postal card, Legal 13" or 14", Executive, A4, A5, B5, A6,
A3 A3-Nobi, B4
(Only the 1st tray and the front feeder support A6 and
postal card sizes.)
Weight: 1st tray 17 lb to 54 lb (64 to 203g/m
2
)
Multi Purpose feeder 17 lb to 54 lb (64 to 203g/ m2)
Monochrome: 37 pages per minute
(Transparency: Pages per minute)
Postal Card, Label, Thick Paper: 12Pages per minute
(5) Resolution 600 x 600 dots per inch ( C9300 )
1200 × 1200 dots per inch ( C9500 )
(6) Power Input 115V~127V , 220V~240V
(7) Power Consumption Peak: 1600W Normal Operation: 800W (5% duty)
Idle: 250W Power Saving Mode: 70W
(8) Frequency 50Hz or 60Hz±2Hz
(9) Noise Operating: 55 dB (without Option units)
Standby: 45 dB
Power Saving: 43 dB
(10) Consumable Life Toner Cartridge: 7,500 pages (5% duty)
Large-Capacity Toner Cartridge: 15,000 pages (5% duty)
(in each of Y, M, C and K)
Image Drum: 26,000 pages (5% duty, Continuous printing)
(in each of Y, M, C and K)
(11) Parts Replaced Periodically
Fuser Unit Assy: Every 80,000 pages
Belt Cassette Assy: Equivalent of 80,000 pages (3P/J)
Transfer Belt cartridge: 60,000 prints
41956001TH Rev.4 11 /
(12) Temperatures and Relative Humidities
Temperature
Temperature (ºF) RemarkTemperature (ºC)
Oki Data CONFIDENTIAL
Operating 50 to 89.6 10 to 32
Non-Operating 32 to 109.4 0 to 43 Power-off
Storage (Max. One Year) -14 to 109.4 -10 to 43 With drum and toner
Transport (Max. One Month) -20 to 122 -29 to 50 With drum and without toner
Transport (Max. One Month) -20 to 122 -29 to 50 With drum and toner
17 to 27ºC (Temperatures to
assure full color print quality)
Humidity
Relative Humidity (%) Max. Wet-Bulb Temperature (ºC) Remark
Operating 20 to 80 25 50 to 70%
(Humidities to assure full color print quality)
Non-Operating 10 to 90 26.8 Power-off
Storage 10 to 90 35
Transport 10 to 90 40
(13) Printer Life 1,000,000 pages (on a A4 basis) or five years
41956001TH Rev.4 12 /
2. PARTS REPLACEMENT
This section describes the procedure for replacing the parts, assemblies and units in the
field.The replacing procedure is given for detachment. To attach, use the reverse procedure.
2.1 Precautions in Replacing Parts
(1) Before replacing the parts, be sure to remove the CA cable and the interface cable.
(a) To remove the AC cable, always use the following procedure.
1 Flip the power switch of the printer off (to “O”).
2 Pull the AC inlet plug of the AC cable out of the AC receptable.
3 Remove the AC cable and the interface cable from the printer.
(b) To connect the printer again, always use the following procedure.
1 Connect the AC cable and the interface cable to the printer.
2 Insert the AC inlet plug into the AC receptacle.
3 Flip the power switch of the printer on (to “I”).
Oki Data CONFIDENTIAL
Disconnect
(2) Do not disassemble the printer so long as it operates properly.
(3) Minimize the disassembly. Do not detach parts other than those shown in the replacing
(4) For maintenance applications, use designated tools.
(5) Follow the order instructed to disassemble the printer. Incorrect order may damage the
(6) Small parts such as screws and collars tend to get lost, so temporarily place and fix them
(7) When handling ICs and circuit boards such as microprocessors, ROMs and RAMs, do not
(8) Do not place the printed circuit boards directly on the printer or the floor.
Connect
procedure.
parts.
in their original positions.
use gloves that likely to have static.
41956001TH Rev.4 13 /
[Maintenance Tools]
Table 2-1 lists tools necessary to replace the units.
Table 2-1 Maintenance Tools
Oki Data CONFIDENTIAL
No.
1
2
3
4
5
6
7 1
8
No. 1-100 Philips
screwdriver
No. 2-200 Philips
screwdriver, Magnetized
No. 3-100 screwdriver
No. 5-200 screwdriver
Digital multimeter
Pliers
Handy cleaner
LED Head cleaner
P/N 4PB4083-2248P001
Q' ty Place of use RemarksService Tools
1
2~2.5 mm screws
1
3~5 mm screws
1
1
1
1
1
Cleans LED head
9 1
10
Label
11
12
High voltage probe
Transparency sheet
( thickness premeasured)
42404301
Stage height adjustment jig
42423701
-
Microdriver
2.0mm
1
Adjustment for Media
Thickness sensor
1
Adjustment for Media
Thickness sensor
1
Adjustment for Lever
adjust
(Media Thickness)
41956001TH Rev.4 14 /
2.2 Parts Layout
Oki Data CONFIDENTIAL
Figure 2.1
41956001TH Rev.4 15 /
[Top Cover Assy]
Oki Data CONFIDENTIAL
Figure 2.2
41956001TH Rev.4 16 /
[Printer Unit-1/2]
Oki Data CONFIDENTIAL
Figure 2.3
41956001TH Rev.4 17 /
[Printer Unit-2/2]
Oki Data CONFIDENTIAL
Figure 2.4
41956001TH Rev.4 18 /
[Cassette Guide Assy (L), (R)]
Oki Data CONFIDENTIAL
Figure 2.5
41956001TH Rev.4 19 /
Oki Data CONFIDENTIAL
Figure 2.6
41956001TH Rev.4 20 /
[Duplex Unit]
Oki Data CONFIDENTIAL
D
C
B
A
D
C
E
B
E
A
Figure 2.7
41956001TH Rev.4 21 /
2.3 Replacing Parts
This section describes how to replace the parts and assemblies illustrated below.
C9500/C9300 41960434, 41960432
Print Engine Controller PWB (2.3.23)
41970801 × 4, 41971201 × 4
LED Assy (2.3.2)
41863002
Power-Unit AC-DC Switching (115V) (2.3.35)
41870802
Power-Unit AC-DC Switching (230V) (2.3.35)
42046801
HV Power Supply (2.3.36)
41946101, 41946105, 41946103, 41946109
Fuser Unit (2.3.38)
41946001, 41946003, 41946009
Belt Unit (2.3.39)
41945701, 41945703
Duplex Unit (2.3.40)
42542704, 42542705, 42542709, 42542710
Control panel Bezel (2.3.4)
41484915
Cassette Assy (2.3.7)
419413xx
Printer NIP
41941401
Printer Unit
41483702
Main Motor FAN Assy (2.3.28)
41481006
Unit-Lower-Frame
(2.3.37)
41500101
Insurator
41431602
ID Cooling Fan (2.3.19)
2381023P0004
HV Tape Harness
41484101
Electrical Chassis (2.3.22)
41483806
Main Motor Assy (2.3.33)
41483906
Belt Motor Assy (2.3.31)
40850206
Contact Assy (2.3.34)
41484001
Plate Assy-Side (2.3.34)
41276501
Rear Cover (2.3.12)
41277401
Left Side Cover (2.3.9)
41481203
Right Side Cover (2.3.7)
41749602, 41276401
Front Cover (2.3.11)
41484201
Face Up Tray (2.3.10)
xxxxxxxx
Top Cover
41484401
Top cover (2.3.1)
41493013, 41493014
Multipurpose Tray Assy (2.3.13)
41764102, 41764103
MT Top Cover (2.3.13)
41277901
Cover-Blind (2.3.7)
41886901
Thickness Plate Assy (2.3.15)
41928801
Stage -Pickup (2.3.16)
41911101
Thickness Sensor Assy (2.3.15)
41888701
Cover Seal Sensor (2.3.15)
41481306
Main Feed Assy (2.3.37)
41481106
Frame Assy Lower
41481203
Right Side Cover (2.3.7)
41941501
Printer Chassis (2.3.24)
41483206
Regist Roller Assy (A) (2.3.16)
41483302
Regist Roller Assy (B) (2.3.17)
41483406
Registration Motor Assy (2.3.18)
41187102
Registration Clutch (2.3.18)
41486801
Duplex Guide Assy (2.3.21)
41950401
PCE-Size Sence (2.3.37)
2201000P0140
IMSA-9714N-14Z02 (2.3.37)
41490703
Electrical Chassis Cooling Fan
40863801
Plate-Side (2.3.22)
40841401
Fuser Latching Handle (R) (2.3.32)
41628301
Fuser Latching Handle Spring (2.3.32)
41045801 × 2
Link (2.3.13)
41484603
MT Tray Cover Assy (2.3.13)
40325101
MT Drive Gear (2.3.13)
Oki Data CONFIDENTIAL
40841301
Fuser Latching Handle (L) (2.3.30)
41628301
Fuser Latching Handle Spring (2.3.30)
40841601
Entrance Sensor Actuator #1 (2.3.25)
41578501
Entrance Sensor Actuator #2 (2.3.27)
40841801
Entrance Sensor Actuator #3 (2.3.27)
41744006
Registration Shutter Solenoid Assy
41947701
Registration Shutter
42030001
Registration Shutter Spring
42170901
Fuser Driver Gear-A (2.3.28)
41095901
Fuser Exit Roller (2.3.28)
4PP4043-4489P001
Fuser Exit Roller Bushing (L) (2.3.28)
4PP4076-3949P001
Fuser Exit Roller Bushing (R) (2.3.28)
41189701 × 4
Drum Contact Assy (2.3.14)
41258301
Entrance Sensor PWB (2.3.26)
41947801
Color Registration Sensor Assy (2.3.20)
41073602
Exit Sensor Assy (2.3.29)
42199601
Waste Toner Sensor Actuator (2.3.27)
42216201 × 8
LED Assy Spring (2.3.2)
42124802, 41960902
LED Control PWB (2.3.4)
41349801
Stack Full Sensor (2.3.4)
41484504
Control Panel Assy (2.3.4)
2381003P0018, 2381003P0031
Control Panel Tape Harness (2.3.4)
42169501
LED Harness K
42169502
LED Harness Y
42169503
LED Harness M
42169504
LED Harness C
41328401
Top Cover Handle (2.3.5)
41277601
Top Cover Latch (2.3.5)
40861401 × 2
Top Cover Latch Spring (2.3.5)
41349301 × 4
Eject Roller (2.3.4)
41947901
Eject Guide Assy (2.3.6)
41956001TH Rev.4 22 /
2.3.1 Top cover
(1) Open the top cover Assy.
(2) Unscrew 9 screws 1 to detach the top cover 2.
Oki Data CONFIDENTIAL
2
Figure 2-3-1 Top Cover
1
1
1
41956001TH Rev.4 23 /
2.3.2 LED Head / LED Spring / Post-Guide
(1) Open the Top Cover 1.
(2) Unplug 3 cables, release 2 hooks and remove the LED Head 2.
(At this time, the 2 springs 3, Post-Guide 4 become detached together with the LED
Head 2.)
Oki Data CONFIDENTIAL
Note!
The contact is used only for 1200 dpi K, Y and M.
4
3
1
Contact
3
4
2
Figure 2-3-2 LED Head / LED Spring / Post-Guide
41956001TH Rev.4 24 /
2.3.3 Top Cover Unit
(1) Remove the Top Cover. (See Sec. 2.3.1.)
(2) Remove the Rear Cover. (See Sec. 2.3.12.)
(3) Remove the Front Cover (See Sec. 2.3.11.)
(4) Remove the Electrical Chassis. (See Sec. 2. 3. 22.)
(5) Unscrew the screws 1 and 2, and remove the Limiters (F) 3 and (R) 4.
(6) Remove the Inner Shaft 5 and then the Top Cover Unit 8. At this time, the Inner
Springs 6.
and 7 also come off.
Oki Data CONFIDENTIAL
8
1
6
2
3
7
5
2
1
4
Figure 2-3-3 Top Cover Unit
41956001TH Rev.4 25 /
Oki Data CONFIDENTIAL
2.3.4 Control Panel Assy / Control Panel Bezel / LED Control PWB / Toner Sensor / Stack Full Sensor /
Control Panel / Control Panel Tape Harness / Eject Roller
(1) Remove the Control Panel Bezel 1.
(2) Unscrew the screws 2 and remove the Control Panel 3.
(3) Remove the Control Panel Tape Harness 4.
(4) Unscrew the screws 5, unplug the connectors 6 and then remove LED Control PWB 7.
(5) Unscrew the screws 8 and remove the plate 9.
(6) Release the claw and remove the Toner Sensor 0.
(7) Remove the Stack Full Sensor A.
(8) Unscrew the screw B and remove the Eject Sensor Bracket C.
1
2
2
5
8
B
C
3
4
7
6
A
0
8
9
Figure 2-3-4 Control Panel Assy / Control Panel Bezel / LED Control PWB / Toner Sensor
/ Stack Full Sensor / Control Panel / Control Panel Tape Harness / Eject
Roller
41956001TH Rev.4 26 /
2.3.5 Top Cover Handle / Top Cover Latch / Top Cover Latch Spring
(1) Unscrew 2 screws 1 and remove the Top Cover Handle 2 and Top Cover Latch 3.
(At this time, 2 Top Cover Latch Springs 4 also come off.)
Oki Data CONFIDENTIAL
1
1
4
3
2
4
Figure 2-3-5 Top Cover Handle / Top Cover Latch / Top Cover Latch Spring
41956001TH Rev.4 27 /
2.3.6 Eject Guide Assy
(1) Unscrew 7 screws 1 and remove the Eject Guide Assy 2.
Oki Data CONFIDENTIAL
1
2
1
1
1
Figure 2-3-6 Eject Guide Assy
41956001TH Rev.4 28 /
2.3.7 Cassette Assy / Cover-Blind / Side Cover Assy
(1) Take out the Cassette Assy 1.
(2) Release 2 joints and remove the Cover-Blind 2.
(3) Unscrew 2 screws 3 and remove the stopper 4.
(4) Unscrew 5 screws 5, release the claw at the left support of the Side Cover (R) and
remove the Side Cover (R) 6.
Oki Data CONFIDENTIAL
2
1
5
4
3
5
6
5
Figure 2-3-7 Cassette Assy / Cover-Blind / Side Cover Assy
41956001TH Rev.4 29 /
2.3.8 Feed Roller
(1) Take out the Cassette. (See Sec. 2.3.7.)
(2) Release the latch and remove the Feed Rollers 1.
Oki Data CONFIDENTIAL
1
1
1
Figure 2-3-8 Feed Roller
41956001TH Rev.4 30 /
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