Oki C5550 User manual

Oki Data CONFIDENTIAL
CX2033/MC560MFP
Maintenance Manual
052809B

44158801TH Rev.2 2 /
Oki Data CONFIDENTIAL
Document Revision History
Rev.No. Date Corrected items Person in
charge
No. Page Description of change
1 2008-11-10 ISSUE MFD1 Y. Shimizu
2 2008-12-25 Drawing Maintenance EP5 Y.Fujisawa

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PREFACE
This maintenance manual describes maintenance methods in filed of MC560/CX2033MFP
targeting service personnel.
Names of components that require procurement, such as printed circuit board, are assigned with
numbers.
(Example) ABCD-3 Printed circuit board
The number is assigned to specify type of the component and is not the manufacturing version of
the printed circuit board and so on.
In the body of this manual except the components list, numbers are not assigned to components
unless otherwise necessary.
Regarding the methods for handling and operating the device, please refer to "Instruction Manual".
Attention!
• Reprinting this document entirely or partially without permission is prohibited.
• Contents of this document are subject to change without notice because of remodeling
of the device or modification of descriptions.

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CONTENTS
1. CONFIGURATION ................................................................................................8
1.1 System configuration.............................................................................................................8
1.2 MFP configuration...............................................................................................................10
1.3 Composition of optional items.............................................................................................11
1.4 Specifications......................................................................................................................12
1.5 Interface specifications .......................................................................................................18
1.5.1 Parallel interface specifications (N/A) ...................................................................18
1.5.2 USB interface specifications..................................................................................18
1.5.2.1 Outline of USB interface.........................................................................18
1.5.2.2 USB interface connectors and cables....................................................18
1.5.2.3 USB interface signals.............................................................................18
1.5.3 Network interface specifications............................................................................19
1.5.3.1 Outline of network interface....................................................................19
1.5.3.1.1 Basic specifications of network interface............................19
1.5.3.1.2 Basic specifications of network interface............................19
1.5.3.2 Network interface connectors and cables ................................................20
1.5.3.3 Network interface signals..........................................................................20
2. EXPLANATION OF OPERATION ......................................................................21
2.1 Electrophotographic processing mechanism......................................................................21
2.2 Printing process ..................................................................................................................26
2.3 Theory of Operation............................................................................................................36
2.3.1 Introduction............................................................................................................36
2.3.2 Main Control Unit...................................................................................................37
2.3.2.1 System Diagram.....................................................................................37
2.3.2.2 Main Control Circuit................................................................................38
2.3.2.3 Video Circuit:..........................................................................................40
2.3.2.4 Panel and LCD Module Circuit...............................................................42
2.3.2.5 Sensor Input...........................................................................................43
2.3.2.6 Sub Power Supply Circuit.......................................................................43
3. INSTALLATION...................................................................................................44
3.1 Cautions, and do's and don'ts.............................................................................................44
3.2 Unpacking method..............................................................................................................46
3.3 MFP Installation Instructions...............................................................................................48
3.4 Listing of component units and accessories.......................................................................49
3.5 Assembly Procedure...........................................................................................................50
3.5.1 MFP main body......................................................................................................50
3.5.2 Connection of power cable....................................................................................59
3.5.3 Installation of optional items..................................................................................63
3.5.4 Confirmation of recognition of optional items........................................................68
3.6 Menu Map print ...................................................................................................................69
3.7 Connection methods...........................................................................................................70
3.8 Confirmation of paper used by the user..............................................................................72
4. REPLACEMENT OF PARTS ..............................................................................73
4.1 Precautions on the replacement of parts............................................................................73

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4.2 Part replacement methods..................................................................................................75
4.2.1 Left side cover .......................................................................................................75
4.2.2 Right side cover.....................................................................................................76
4.2.3 Detachment methods of the scanner and printer ..................................................77
4.2.4 Scanner .................................................................................................................78
4.2.4.1 ADF Unit.................................................................................................78
4.2.4.1.1 ASS'Y STOPPER................................................................78
4.2.4.1.2 ASS'Y PAPER SUPPORT...................................................78
4.2.4.1.3 ASS'Y PAPER TRAY...........................................................79
4.2.4.1.4 ADF ROLLER......................................................................79
4.2.4.1.5 ASS'Y PAD..........................................................................80
4.2.4.1.6 ASS'Y HINGE LIGHT/HEAVY.............................................81
4.2.4.1.7 ADF LEVER RELEASE.......................................................82
4.2.4.1.8 ASS'Y ADF DOCUMENT (with Hinge)................................83
4.2.4.2 Flatbed unit.............................................................................................84
4.2.4.2.1 ASS'Y CONTROL PANEL...................................................84
4.2.4.2.2 ASS'Y MAIN BOARD, ASS'Y STAND-L, R........................85
4.2.4.2.3 ASS'Y FLATBED UNIT........................................................88
4.2.5 Printer ....................................................................................................................89
4.2.5.1 Face-Up Tray..........................................................................................89
4.2.5.2 Rear cover..............................................................................................90
4.2.5.3 LED Assy/LED Assy springs..................................................................91
4.2.5.4 Control PCB............................................................................................92
4.2.5.5 Print engine controller PCB....................................................................93
4.2.5.6 Top cover assembly................................................................................95
4.2.5.7 Top cover................................................................................................96
4.2.5.8 Controller Panel Assy.............................................................................97
4.2.5.9 Board PRP/ Top Cover Handle...............................................................98
4.2.5.10 Low-Voltage Power Supply / Low-Voltage Fan /
Hopping Motor / Fuser Motor..................................................................99
4.2.5.11 Guide Eject Assy / Color Register Assy / Board-PRY..........................101
4.2.5.12 Fan (Fuser)/ Belt Motor / High-Voltage Power Supply Board /
Cover-Open Switch.......................................................................................103
4.2.5.13 MPT Assy.............................................................................................104
4.2.5.14
Feeder Unit / Board-RSF/ MPT Hopping Roller / Frame Assy Separator /
Cover Front............................................................................................................105
4.2.5.15 Board-PRZ Lift-Up Motor/Solenoid/Paper-End Sensor .......................106
4.2.5.16 Feed Roller...........................................................................................108
4.2.5.17 Shaft Eject Assy(FU) / Shaft Eject Assy(FD) / Eject Sensor................109
4.2.5.18 Fuser Unit.............................................................................................110
4.2.5.19 Belt Unit................................................................................................ 111
4.3 Lubricating points..............................................................................................................112
4.4 Precautions for Main Board Replacement ........................................................................131
4.4.1 Deleting e-mail addresses...................................................................................131
4.4.1.1 Steps of exporting and deleting data....................................................131
4.4.1.2 Steps of importing the exported data...................................................134
4.4.2 Deleting Server Profiles.......................................................................................136
4.4.2.1 Steps of exporting and deleting data....................................................136
4.4.2.2 Steps of importing the exported data...................................................139

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5. PANEL SWITCH FUNCTIONS .........................................................................141
5.1 Scanner Operator Panel ..................................................................................................141
5.1.1 Layout..................................................................................................................141
5.1.1.1 Buttons ................................................................................................141
5.1.2 LED/LCD..............................................................................................................143
5.1.3 Control Panel.......................................................................................................144
6. MAINTENANCE MENUS..................................................................................147
6.1 System maintenance menu (For maintenance personnel)................................................147
6.2 Maintenance utility ............................................................................................................150
6.3 Functions of user's maintenance menu ............................................................................154
6.3.1 Maintenance menu (For end users) ....................................................................154
6.3.2 Self-diagnostic mode...........................................................................................155
6.3.2.1 Operator panel......................................................................................155
6.3.2.2 Normal self-diagnostic mode (Level 1).................................................158
6.3.2.2.1 Activation method for self-diagnostic mode (Level 1) ......159
6.3.2.2.2 Deactivation of self-diagnostic mode................................159
6.3.2.3 Switch scan test ...................................................................................159
6.3.2.4 Motor clutch test...................................................................................162
6.3.2.5 Test print...............................................................................................164
6.3.2.6 Color registration adjustment test ........................................................169
6.3.2.7 Print density adjustment test................................................................170
6.3.2.8 Indication of consumable part counters ...............................................172
6.3.2.9 Indication of printed page counters......................................................173
6.3.2.10 Factory/Shipping switching .................................................................173
6.3.2.11 Setup of self-diagnostic function..........................................................174
6.3.2.12 Indication of LED head serial number..................................................175
6.3.2.13 Details of panel indications...................................................................176
6.3.3 Various types of print on the individual printer equipped with controller .............187
6.3.4 Functions of keys when depressed at power-on .................................................187
6.4 Setup after replacement of parts.......................................................................................188
6.4.1 Precautions on the replacement of engine control PCB......................................188
6.4.2 Setup of EEPROM after replacement of TBR PCB.............................................191
6.4.2.1 Replacement of EEPROM after replacement of TBR PCB..................191
6.4.2.2 Setup of CU Serial Number..................................................................191
6.4.3 Setup of destination.............................................................................................192
6.6 Updating Scanner Firmware .............................................................................................193
6.6.1 Updating with the OKI MFP Network Setup Tool.................................................193
6.6.2 Updating by Running the Scanner in Loader Mode.............................................196
7. PERIODICAL MAINTENANCE.........................................................................198
7.1 Recommended replacement parts....................................................................................198
7.2 Cleaning............................................................................................................................198
7.3 Cleaning of LED lens array ...............................................................................................198
7.4 Cleaning of pickup rollers..................................................................................................200
7.5 Internal cleaning of printer ................................................................................................201
7.6 Preventive Maintenance....................................................................................................203
7.6.1 Cleaning the document glass..............................................................................203
7.6.2 Cleaning the ADF ................................................................................................204

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7.6.3 Cleaning a Paper Jam ........................................................................................204
7.6.4 Replacing the ADF pad........................................................................................205
8. TROUBLESHOOTING PROCEDURES............................................................206
8.1 Precautions prior to repair.................................................................................................206
8.2 Items to be checked prior to taking action on abnormal images.......................................206
8.3 Precautions when taking action on abnormal images ......................................................206
8.4 Preparations for troubleshooting.......................................................................................206
8.5 Troubleshooting method....................................................................................................206
8.5.1 LCD Message List ...............................................................................................207
8.5.2 Preparing for troubleshooting ..............................................................................223
8.5.3 Image Problem Troubleshooting..........................................................................261
8.5.4 Actions after forced initialization of HDD/Flash...................................................268
8.5.5 Network Troubleshooting.....................................................................................269
8.6 Check of fuses ..................................................................................................................270
8.7 Troubleshooting.................................................................................................................271
8.7.1 Troubleshooting flowchart....................................................................................271
8.7.1.1 Power ON to the MFP ready....................................................................271
8.7.1.2 Copy operation ....................................................................................272
8.7.1.3 Email operation.....................................................................................273
8.7.1.4 Control panel operation........................................................................274
8.7.2 Tables ..................................................................................................................275
8.7.2.1 LCD does not display ...........................................................................276
8.7.2.2 Printer does not react...........................................................................276
8.7.2.3 Scanning is not performed ...................................................................276
8.7.2.4 Printer does not print............................................................................277
8.7.2.5 Image unclear.......................................................................................277
8.7.2.6 Noise generated...................................................................................277
8.7.2.7 LCD does not show message after command .....................................277
8.7.2.8 C5550MFP is not connected to the network........................................278
8.7.2.9 C5550MFP cannot send email.............................................................278
8.7.2.10 Error message......................................................................................279
8.7.2.10.1 Error message during initializing.......................................279
8.7.2.10.2 Error message during printing and copying......................280
8.7.2.10.3 Information codes during networking ...............................285
8.7.2.10.4 Error message during E-mailing........................................286
8.7.2.10.5 Error message during filing...............................................288
8.7.2.10.6 Error message on fax........................................................290
8.8 Scanner Shipment Setting List..........................................................................................291
8.8.1 The outline of Menu structure..............................................................................291
8.8.2 Scanner operation panel .....................................................................................291
8.8.3 Menu Settings......................................................................................................295
8.8.4 Additional Settings...............................................................................................298
8.8.5 Fax Service Mode................................................................................................299
9. CONNECTION DIAGRAMS..............................................................................300
9.1 Check of resistance values...............................................................................................300
9.2 Component layout.............................................................................................................304

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1. CONFIGURATION
1.1 System configuration
MC560/CX2033MFP Printer Connection diagram
Figure 1-1-1 represents the system configuration of the printer.
Figure 1-1-1
Board-PRP (Opepanel)
Board-PRF
(PU) Board-TBR
(CU)
Board-TBI
Board-V7Y
(2nd Tray Control)
Board-PRY
(Relay)
Board-PRC
(Registration Sensor)
Board-V7Y-2
(Duplex Control)
Power Supply Unit AC
Board-PRZ (Toner-low Sensor)
Board-LUM
(RFID)
Board-POL
(RFID)
Board-RSF
(Front Sensor)
High Voltage Power Supply
7
11
F-3
C-4
C-1
C-2
C-3
C-6
F-2
C-13
C-14 C-14
C-13
4
4 10 5
5 2222 2
2
2 3
13
20
4 4 5 4
2 4 2
4 4 5
3
4
4
24 24 24 24
5
32 32
3
24 24 24 24
F-9 F-10 F-11 F-12
9
3
8
22
2
13 20 9 8
C-5
C-7
C-10
C-11
F-4
F-7 F-8 C-9
F-6
11 7 55 3
3
2 22
11 11
10 8 3 14
22 4
20
C-12
Scanner I/F
(USB)
Scanner Connector
PSU Fan Motor
2nd Tray Connector
Hopping Solenoid Paper-end Sensor
Hopping Motor ID Motor
K C
MY
Cover Open SW
Environment Sensor
Fuser Fan Motor
Thermistor
Thermistor
(Frame)
Fuse
Thermistor
(Upper)
Thermistor
(Lower)
Heater Lamp
(x2)
Density Sensor Exit Sensor
Fuser Motor
Fuser Connentor
Belt Motor
Lift Up Motor
Lift Up Sensor
WR Sensor
IN1 Sensor IN2 Sensor
Duplex
Connector
CU Fan Motor
K-HEAD Y-HEAD M-HEAD C-HEAD
Centronics I/F
(option)
C-8
12 12
10
(24V)
10
10
F-5
Cable FFC

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Oki Data CONFIDENTIAL
MC560/CX2033MFP Scanner Connection Diagram
Figure 1-1-2 represents the system configuration of the scanner.
Figure 1-1-2
FAX
Board
LINE
TEL
USB (5 Pin)
CCD (20 Pin)
2 Pin
Inverter
Circuit Motor Home sensor
Lamp
4 Pin 3 Pin
Motor (18 Pin)
34Pin
4 Pin
6 Pin
Power (4 Pin)
Printer Connector
Printer I/F
Cable
FFC
Scanner Main board ADF Board
Motor
Paper
sensor
Scanner CCD board

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Figure 1-2
Air flow
1.2 MFP configuration
The internal part of the MC560/CX2033MFP 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.