Oki C810 User manual

Oki Data CONFIDENTIAL
C810
Maintenance Manual
(ODA/OEL/AOS)
[Rev.1]
Related drawings
Drawing No. Name
44072901TL C810 Disassembly For Maintenance
44072901TR C810 RSPL
BOM Use for Certification Body
Rev Date DCO No. Contents Design Approval
Approval Takashi Wakana Design Takashi Wakana Name
C810
Maintenace Manual
Check Xxxxx Xxxxx
Date
2009-02-25 Drawing No.
44072903TH 1
221
No.01

44072903TH Rev.1 2 /
Oki Data CONFIDENTIAL
Document Revision History
Rev.
No. Date
Corrected Items Person in
charge
No. Page Description of change
1 2009-02-25 Issue T. Wakana
Rev.
No. Date
Corrected Items Person in
charge
No. Page Description of change
Document Revision History

44072903TH Rev.1 3 /
Oki Data CONFIDENTIAL
This manual explains the maintenance methods for the C810dn.
The manual has been prepared for use by the maintenance personnel. For
operating methods of the C810dn, refer to the corresponding user's manual.
In this manual, the printer name may be described as follows.
C810dn →C810
Note! • The contents of this manual are subject to changes without prior notice.
• Despite that exhaustive efforts were made in preparing the manual to
make it accurate, it still may contain errors. Oki Data will not hold itself
liable for any damage that results or is claimed to have resulted from
repair, adjustment, or modification of the printer conducted by the user
using this manual.
• The parts employed in the printer are so delicate that they may be
damaged if not treated properly. Oki Data strongly recommends that
the maintenance of the printer be undertaken by Oki Data's registered
maintenance personnel.
• Work after eliminating static electricity.
PREFACE
PREFACE

44072903TH Rev.1 4 /
Oki Data CONFIDENTIAL
INDEX
INDEX
1. CONFIGURATION .............................................................7
1.1 System Configuration.......................................................................................... 8
1.2 Printer configuration............................................................................................ 9
1.3 Composition of optional items .......................................................................... 10
1.4 Specifications.................................................................................................... 11
1.5 Interface specifications ..................................................................................... 14
1.5.1 USB interface specifications ...................................................................... 14
1.5.1.1 Outline of USB interface..................................................................... 14
1.5.1.2 USB interface connectors and cables................................................ 14
1.5.1.3 USB interface signals ......................................................................... 14
1.5.2 Network interface specifications ................................................................ 15
1.5.2.1 Outline of network interface ............................................................... 15
1.5.2.2 Network interface connectors and cables.......................................... 15
1.5.2.3 Network interface signals ................................................................... 15
2. DESCRIPTION OF OPERATION..................................... 16
2.1 Electrophotographic process mechanism ........................................................ 17
2.2 Printing process ................................................................................................ 20
3. INSTALLATION................................................................30
3.1 Cautions, and do’s and don’ts........................................................................... 31
3.2 Unpacking procedure........................................................................................ 32
3.3 Printer installation instructions .........................................................................33
3.4 List of components and accessories ................................................................34
3.5 Assembly procedure ......................................................................................... 35
3.5.1 Assembly of the printer main unit ...............................................................35
3.5.2 Connection of the power cable................................................................... 40
3.5.3
Installation and recognition confirmation of options ............................................... 42
3.6 Printing of the MENU MAP ............................................................................... 50
3.7 Connection methods......................................................................................... 51
3.8 Checking of paper used by the user .................................................................53
4. REPLACEMENT OF PARTS ...........................................54
4.1 Notes on replacement of parts..........................................................................55
4.2 Part replacement procedure ............................................................................. 57
4.2.1 Belt unit....................................................................................................... 57
4.2.2 Fuser unit .................................................................................................... 58
4.2.3 Left side cover ............................................................................................ 59
4.2.4 Right side cover..........................................................................................60
4.2.5 Rear cover Assy.......................................................................................... 61
4.2.6 LED Assy. ................................................................................................... 62
4.2.7 Main controller PCB, image drum motor, image drum lift-up motor and
feed motor...................................................................................................63
4.2.8 Print engine controller PCB ....................................................................... 66
4.2.9 Top cover Assy. .......................................................................................... 68
4.2.10 Top cover .................................................................................................... 70
4.2.11 Operator panel Assy. .................................................................................. 71
4.2.12 Board PRP.................................................................................................. 72
4.2.13 Shaft-ejection Assy. (FU) and shaft-ejection Assy.(FD) ............................ 73
4.2.14 Guide-ejection Assy.-lower, color-registration Assy. and
relay board (P6Y) ....................................................................................... 74
4.2.15 Fan (fuser), high-voltage power supply board, contact Assy.,
fuser sensor Assy. ...................................................................................... 78
4.2.16 MPT Assy., MPT hopping roller, separator and pick-up roller.................... 80
4.2.17 Registration roller Assy............................................................................... 81
4.2.18 Gear box, registration/hopping roller Assy. and solenoid .......................... 82
4.2.19 Holder-switch Assy., low-voltage power supply fan and low-voltage
power supply...............................................................................................85
4.2.20 Belt motor Assy. and fuser motor Assy....................................................... 87
4.2.21 Side-R Assy. and side-L Assy. ................................................................... 89
4.2.23 Paper feed rollers (tray 2/3 (option)) .......................................................... 93
4.2.24 Paper feed roller (multi-purpose tray) ........................................................95
4.3 Portions Lubricated...........................................................................................96

44072903TH Rev.1 5 /
Oki Data CONFIDENTIAL INDEX
5. MAINTENANCE MENUS............................................... 112
5.1 System maintenance menu (For maintenance personnel) .............................113
5.2 Maintenance utility ...........................................................................................114
5.3 Functions of user's maintenance menu ...........................................................117
5.3.1 Maintenance menu (For end users) ..........................................................117
5.3.2 Self-diagnostic mode.................................................................................119
5.3.2.1 Operator panel...................................................................................119
5.3.2.2 Normal self-diagnostic mode (Level 1)............................................. 121
5.3.2.2.1 Activation method for self-diagnostic mode (Level 1) ...................... 121
5.3.2.2.2 Deactivation of self-diagnostic mode ............................................... 121
5.3.2.3 Switch scan test................................................................................ 122
5.3.2.4 Motor clutch test ............................................................................... 124
5.3.2.5 Test print ........................................................................................... 126
5.3.2.6 Color registration adjustment test .................................................... 130
5.3.2.7 Print density adjustment test ............................................................ 131
5.3.2.8 Indication of consumable part counters ........................................... 132
5.3.2.9 Indication of printed page counters .................................................. 133
5.3.2.10 Factory/Shipping switching .............................................................. 133
5.3.2.11 Setup of self-diagnostic function ...................................................... 134
5.3.2.12 Indication of LED head serial number .............................................. 134
5.3.3 Various types of print on the individual printer equipped
with controller ........................................................................................... 135
5.3.4 Functions of keys when depressed at power-on ...................................... 135
5.4 Setup after replacement of parts .................................................................... 136
5.4.1 Precautions on the replacement of engine control PCB .......................... 136
5.4.2 Setup of EEPROM after replacement of CU PCB.................................... 137
5.4.3 Setup of destination.................................................................................. 138
5.5 About the manual setup of Print density adjustment...................................... 139
5.6 Administrator Menu List of the Printer ............................................................ 140
How to Change ................................................................................................ 140
6. CLEANING .................................................................... 142
6.1 Cleaning.......................................................................................................... 143
6.2 Cleaning the LED lens array ........................................................................... 144
6.3 Cleaning of pickup rollers ............................................................................... 146
7. TROUBLESHOOTING PROCEDURES ......................... 147
7.1 Precautions prior to repair .............................................................................. 148
7.2 Items to be checked prior to taking action on abnormal images .................... 148
7.3 Precautions when taking action on abnormal images.................................... 148
7.4 Preparations for troubleshooting .................................................................... 148
7.5 Troubleshooting method ................................................................................. 149
7.5.1 LCD Message list...................................................................................... 149
7.5.2 Preparing for troubleshooting ................................................................... 168
7.5.2.(1) LCD Display Malfunction .............................................................. 169
7.5.2.(2) Irregular Operation of the device after turning on the power........ 171
7.5.2.(3) Paper Feed Jam(Error 391:1st Tray)............................................. 178
7.5.2.(4) Paper Feed Jam (Error 380)......................................................... 180
7.5.2.(5) Paper Feed Jam (Error 390:Multi-purpose Tray).......................... 181
7.5.2.(6) Paper Path Jam(Error 381)........................................................... 183
7.5.2.(7) Paper Exit Jam(Error 382)............................................................ 185
7.5.2.(8) Duplex Print Jam(Error 370, 371, 372, 373, 383) ......................... 187
7.5.2.(9) Paper Size Error (Error 400, 401) ................................................. 189
7.5.2.(10) ID Unit Up-Down Error(Service Call 140-143) .............................. 190
7.5.2.(11) Fuser Unit Error(Error 170-177) .................................................... 191
7.5.2.(12) Motor Fan Error(Error 120, 127, 051) ............................................ 192
7.5.2.(13) Print Speed is Slow (Low Performance)....................................... 192
7.5.2.(14) Option unit is not recognized ........................................................ 193
7.5.2.(15) LED head is not recognized(Error 131, 132, 133, 134)................. 194
7.5.2.(16) Toner cartridge is not recognized(Error 540, 541, 542, 543) ....... 194
7.5.2.(17) Fuse Cutout Error (Error 150-155) ................................................ 196
7.5.2.(18) Dew Condensation Errors (Error 123) .......................................... 196
7.5.2.(19) Connection Diagram ..................................................................... 197
7.5.3 Image Problem Troubleshooting .............................................................. 198
7.5.3.(1) Color is totally pale (Fig.7.2 A) ...................................................... 199
7.5.3.(2) Background is dirty (Fig.7.2 B)......................................................200
7.5.3.(3) Blank Print (Fig.7.2 C) ................................................................... 201
7.5.3.(4) Vertical lines are printed ............................................................... 201
7.5.3.(5) Cyclic Print Trouble (Refer to Fig.7.2 E)........................................202
7.5.3.(6) Color registration is wide. .............................................................202
7.5.3.(7) Solid Black Print............................................................................ 203

44072903TH Rev.1 6 /
Oki Data CONFIDENTIAL INDEX
7.5.3. (8) Cannot Print .................................................................................. 203
7.5.5 Network Troubleshooting.......................................................................... 204
7.6 Check of fuses ................................................................................................205
7.7 Paper cassette switches versus Paper size correspondence table ............... 206
8. CONNECTION DIAGRAMS...........................................207
8.1 Check of resistance values............................................................................. 208
8.2 Component layout........................................................................................... 212

Oki Data CONFIDENTIAL
1. CONFIGURATION
1.1 System Configuration ..................................................................8
1.2 Printer configuration ....................................................................9
1.3 Composition of optional items ................................................... 10
1.4 Specifications ............................................................................ 11
1.5 Interface specifications.............................................................. 14

44072903TH Rev.1 8 /
Oki Data CONFIDENTIAL 1. CONFIGURATION
1.1 System Configuration
Environmental humidity
High-voltage I/F, Fan control,
Cover-open
K LED HEAD
Y LED HEAD
M LED HEAD
C LED HEAD
Operator panel PCB
Toner sensor PCB
High-voltage PCB
RFID PCB
Low-voltage PCB
ARMORED CPU
Paper
feed
solenoid
Duplex
FAN
Front
sensor
IN
sensor
Cover
open
sensor
Rear
sensor
Bottom
sensor
Hopping
sensor
P.E
sensor
IN
sensor
Paper
size SW
Front sensor PCB
DUPLEX PCB 2nd TRAY PCB
IN1 IN2 WR
M
ID
M
HOP M
IDUP
M
HEAT
Fuser unit
Fuser-end
cooling FAN
Shutter
solenoid
M
BELT
Feed
clutch
Hopping
clutch
Paper feed/
transportation
motor
Hopping
sensor
P.E
sensor
IN
sensor
Paper
size SW
3rd TRAY PCB
Feed
clutch
Hopping
clutch
DUPLEX
Clutch
Separator
solenoid
Duplex
motor
Paper
size SW
Belt unit
PU PCB
Junction PCT
Fuser unit Inlet
EXIT
sensor
Fuser release
sensor
Fuser-IN
sensor
Density
sensor
Color
registration
PCB right
Color
registration
PCB left
Belt unit
Fuse-cut
Fuser fuse-cut/UP&LOW
Upper center/ compensation
Upper side/ Lower Thermistor
Fuse cut,
EXIT
Color drift, density,
Thermistor signal 20MHz
FLASH
8Mbit
FAN, heater control,
others
Fuser-IN, release
5V、24V、0VL、0VP
EEPROM
K-ID Y-ID M-ID C-ID
Low-
voltage
FAN AC-SW
Fuser
FAN
Belt
thermistor
ID UP/
DOWN
Cover-
open
sensor
K toner
sensor
Y toner
sensor
M toner
sensor
C toner
sensor ID fuse cut
SPILYTAS
(Built-in by CPU)
ASIC
LAN USB
CU PCB
LEISUS
command I/F
Environment
sensor
DCON I/F LSYNC
LAN
controller
USB
device
controller
1st P.E
sensor
Paper feed/
transportation
motor
Figure 1-1 represents the system configuration of the printer.
Figure 1-1

44072903TH Rev.1 9 /
Oki Data CONFIDENTIAL 1. CONFIGURATION
1.2 Printer configuration
The internal part of the printer is composed of the following sections:
• Electrophotographic processing section
• Paper paths
• Control sections (CU sect./PU sect.)
• Operator panel
• Power supply sections (High-voltage sect./low-voltage sect.)
Figure 1-2 represents the configuration of the printer.
Figure 1-2

44072903TH Rev.1 10 /
Oki Data CONFIDENTIAL 1. CONFIGURATION
1.3 Composition of optional items
The following optional items are available for the printer.
(1) Expanded tray
(2) Duplex-Unit
Model name : CAB-S1
(3) Cabinet with wheels