Oki B2200 User manual

Oki Data CONFIDENTIAL
B2200/B2400
Maintenance Manual
151107A

Copyright Information
Copyright © 2007 by Oki Data. All Rights Reserved
Disclaimer
Every effort has been made to ensure that the information in this document is
complete, accurate, and up-to-date. The manufacturer assumes no responsibility
for the results of errors beyond its control. The manufacturer also cannot
guarantee that changes in software and equipment made by other manufacturers
and referred to in this guide will not affect the applicability of the information in it.
Mention of software products manufactured by other companies does not
necessarily constitute endorsement by the manufacturer.
While all reasonable efforts have been made to make this document as accurate
and helpful as possible, we make no warranty of any kind, expressed or implied,
as to the accuracy or completeness of the information contained herein.
The most up-to-date drivers and manuals are available from the web site:
http://www.okiprintingsolutions.com
Oki Data CONFIDENTIAL

Oki Data CONFIDENTIAL
43641601TH Rev.1 3 /
Preface
This Maintenance Manual describes the field maintenance methods for maintenance personnel.
Please note that you should refer to the Printer Handbook for the handling and operating methods of the
equipment.
Note:
• All or any part of contents is not allowed to be reproduced without permission from the owner
of copyright.
• The contents are subject to change without notice, due to improvements of the machine and
description in the manual itself.

43641601TH Rev.1 4 /
Oki Data CONFIDENTIAL
Contents
1. CONFIGURATION......................................................................................................6
1.1 System Configuration........................................................................................................................6
1.2 Printer Configuration.........................................................................................................................7
1.3 Specification......................................................................................................................................8
1.4 Marking ...........................................................................................................................................11
1.4.1Warning Label.....................................................................................................................11
1.4.2 Warning/ Caution Marking..................................................................................................11
2.PARTS REPLACEMENT.......................................................................................... 12
2.1 Precautions for Parts Replacement................................................................................................12
2.2 Parts Layout....................................................................................................................................14
2.3 How to Change Parts......................................................................................................................17
2.3.1 Paper Feeder......................................................................................................................17
2.3.2 Cover Assy Upper...............................................................................................................18
2.3.3 LED Head ...........................................................................................................................20
2.3.4 Cover Assy Top...................................................................................................................21
2.3.5 High voltage power supply 1/Sensor board........................................................................22
2.3.6 Flame base unit ..................................................................................................................23
2.3.7 Plate Side M and Gear........................................................................................................27
2.3.8 Main motor..........................................................................................................................28
2.3.9 Hopping roller Assy.............................................................................................................29
2.3.10 Registration Roller..............................................................................................................30
2.3.11 Transfer Roller Assy............................................................................................................31
2.3.12 Fuser Assy..........................................................................................................................33
2.3.13 Back-up roller......................................................................................................................34
2.3.14 Sensor Paper E, Sensor Paper Exit, Sensor Assy Toner...................................................35
2.3.15 Plate Base...........................................................................................................................37
3. Adjustment ..............................................................................................................40
3.1 Administrator Menu ........................................................................................................................................40
4. PERIODICAL MAINTENANCE ................................................................................46
4.1 Periodical Replacement Parts.........................................................................................................46
4.2 Cleaning..........................................................................................................................................46
4.2.1 Cleaning of LED Lens Array ...............................................................................................46
4.2.2 Cleaning Page Function......................................................................................................48

43641601TH Rev.1 5 /
Oki Data CONFIDENTIAL
5. Troubleshooting Procedures.................................................................................49
5.1 Troubleshooting Tips.......................................................................................................................49
5.2 Points to Check before Correcting Image Problems.......................................................................49
5.3 Notes on Correcting Image Problems.............................................................................................49
5.4 Preparation for Troubleshooting......................................................................................................49
5.5 Troubleshooting Flow......................................................................................................................50
5.5.1 Status Message/Problem Tables........................................................................................50
5.5.2 Message Troubleshooting...................................................................................................60
5.5.3 Image Troubleshooting .......................................................................................................67
6. WIRING DIAGRAM .................................................................................................. 74
6.1 Interconnect Signal Diagram...........................................................................................................74
6.2 PCB Layout.....................................................................................................................................75
6.3 Resistance......................................................................................................................................89
APPENDIX A CENTRONICS PARALLEL INTERFACE...................................................90
APPENDIX B USB INTERFACE.......................................................................................95
APPENDIX C NETWORK INTERFACE............................................................................97

Oki Data CONFIDENTIAL
43641601TH Rev.1 6 /
1. CONFIGURATION
1.1 System Configuration
B2200n consists of control and engine blocks in the standard configuration, as shown in Figure 1-1.
Operator panel
Electrophotographic
Processing Unit
LED : 4
SW : 1
Main motor
Paper
cassette
Image drum
cartridge
Paper feeding
mechanism
Hopping clutch
LED Head
Fuser unit
Halogen lamp
High voltage power supply1
/Sensor board
Sub high voltage
power supply
Centronics
USB
LAN
(10BASE-T/100BASE-TX)
AC
switch
AC
input
Low voltage
power supply
Main board
Figure 1-1

Oki Data CONFIDENTIAL
43641601TH Rev.1 7 /
1.2 Printer Configuration
The printer unit consists of the following hardware components:
•Electrophotographic Processor
•Paper Feeder
•Controller
•Operator Panel
•Power Supply Unit
The printer unit configuration is shown in Figure 1-2.
Figure 1-2
High-voltage power supply1/Sensor board
I/D unit
Upper cover Assy
Paper cassette
Top cover Assy

Oki Data CONFIDENTIAL
43641601TH Rev.1 8 /
1.3 Specification
(1) Type : Desktop
(2) External dimensions : 221mm (Height) x 321mm (Width) x 343mm (Depth)
(3) Weight : Approx. 4.8 kg (Including consumables.)
(4) Developing method : Dry and single-component
Exposing method : LED head
(5) Paper used
Free size: Long edge 147~356mm, Short edge 89~216mm
Standard paper : Xerox 4200 (20lb)
Application paper (Manual face-up feed) : Label
: Envelope
: OHP paper (transparency)
(6) Printing speed Continuous printing Maximum 20 pages per minute (plainpaper, A4 copy mode)
Maximum 21 papes per minute (plain paper, Letter copy mode)
A printing speed varies depending on paper size, paper type,
paper weight and paper feeding method.
Warm-up time : About 25 seconds [25 (77˚F)]
Type Weight/
Thickness Size Paper feeding Remarks
Tray 1 Manual
Plain paper ( )
Heavy paper ( )Ream weight 55~75kg
Ream weight 76~90kg A4 210x297
A5 148x210 -
A6 105x148 -
B5 182x257 -
Custom Free size -
LETTER 215.9x279.4
Legal 13 215.9x330.2
Legal 14 215.9x355.6
Executive 184.15x266.7 -
Statement 139.7x215.9 -
Postcard Postal card or postcard
which ream weight is
135kg or less
Postcard 100x148 - B2200n(JP)
only
Double postcard 148x200 -
Envelope Kraft envelope of 85g/m2
or equivalent Envelope 1 120x235 - B2200n(JP) only
Envelope 2 90x205 -
Envelope 3 105x235 -
Envelope free Free size -
Envelope using paper of
24lb and which flap part is
folded properly
Com-9 98.4x225.4 -
Com-10 104.78x241.3 -
DL 110x220 -
C5 162x229 -
Monarch 98.3x190.5 -
Label 0.1~0.15mm A4 210x297 -
LETTER 215.9x279.4 -
Transparency 0.08~0.11mm A4 210x297 -
LETTER 215.9x279.4 -

Oki Data CONFIDENTIAL
43641601TH Rev.1 9 /
(7) Paper feeding method : Automatic feed and manual feed
(8) Paper delivery method : Face up
(9) Resolution : 300×300, 600×600, 600×1200dots/ inch
(10) Power input : AC110~127V±10%, 50/60Hz±2Hz
AC220~240V±10%, 50/60Hz±2Hz
(11) Power consumption Typical operation: Max. 660W, Ave. 360W (25 )
Power save mode: Max. 10W
(12) Temperature and Humidity
Temperature
°F Remarks
In operation 50~89.6 10~32
Not in operation 32~109.4 0~43 Power OFF
During storage* 14~109.4 -10~43
In shipping* -20~158 -29~70 Without drum and toner
In shipping* -20~122 -29~50 With drum and toner
Note: *Only for packed unit
1. Storage conditions specified above apply to printers packed in cardboard boxes for shipping.
2. Temperature and humidity must be in the range where no condensation occurs.
3. The image drum cartridge and the toner cartridge are warranted for a period of one year
from the date of shipping against defective material or workmanship.
4. Delivery of the machine in hot areas (43 (100°F) or higher) should be one month or
shorter.
80%
20%
(73%)
(54%)
10°C (18°C) 27°C 32°C
Temperature
Humidity
Operation range
Humidity Relative humidity
(%)
Maximam wet bulb
temperature ( )Remarks
In operation 20~80 25
Not in operation 10~90 26.8 Power OFF
During storage* 10~90 35
In shipping 10~90 40

Oki Data CONFIDENTIAL
43641601TH Rev.1 10 /
(13) Noise In operation : JIS Z8731 compatible A range, SLOW average 52dBA or less
Power save mode: Silence (Back ground level)
(14) Consumables Toner cartridge : About 2,000 pages
(A4 ISO/ IEC 19752 printing pattern continuous printing.
Except the first toner cartridge that is set in the new drum cartridge.)
Image drum : About 15,000 pages
cartridge (A4 5% duty continuous printing)
: About 10,000 pages (3 pages/ job)
: About 6,000 pages (1 page/ job)

Oki Data CONFIDENTIAL
43641601TH Rev.1 11 /
1.4 Marking
1.4.1Warning Label
The warning labels are affixed to the sections which may cause bodily injury.
Follow the instructions on warning labels during maintenance.
1.4.2 Warning/ Caution Marking
The following low voltage power supply, high voltage power supply 1/ sensor board and sub high voltage
power supply board involve the risk of electric shock, and especially a caution marking is put on the low
voltage power supply.
A heatsink and a core of transformer involve the risk of electric shock. Test before touching.
Even after fuse opening, the circuit involves the risk of electric shock.
Note:If removing the cover assy upper and turning power on, be careful not to touch
the low voltage power supply, high voltage power supply 1/ sensor
board and sub high voltage power supply board. There is a possibility of electric shock.
CAUTION
Low voltage power supply High voltage power supply1
/Sensor board Sub high voltage power supply

Oki Data CONFIDENTIAL
43641601TH Rev.1 12 /
2. PARTS REPLACEMENT
This section explains the procedures for replacement of parts, assemblies, and units in the field. Only
the disassembly procedures are explained here. For reassembly, reverse the disassembly procedure.
2.1 Precautions for Parts Replacement
(1) Before starting to replace parts, remove the AC cord and interface cable.
(a)Remove the AC cord in the following sequence:
i) Turn off (“ ”) the power switch of the printer.
ii) Disconnect the AC inlet plug of the AC cord from the AC receptacle.
iii) Disconnect the AC cord and interface cable from the printer.
(b)Reconnect the printer in the following procedure.
i) Connect the AC cord and interface cable to the printer.
ii) Connect the AC inlet plug to the AC receptacle.
iii) Turn on (“l”) the power switch of the printer.
(2) Do not disassemble the printer as long as it is operating normally.
(3) Do not remove parts which do not have to be touched; try to keep the disassembly to a minimum.
(4) Use specified service tools.
(5) When disassembling, follow the laid out sequences. Parts may be damaged if these sequences are
not followed.
(6) Since screws, collars and other small parts are likely to be lost, they should temporarily be attached
to the original positions during disassembly.
(7) When handling IC’s such as microprocessors, ROMs and RAMs, or circuit boards, do not wear
gloves that are likely to generate static electricity.
(8) Do not place printed circuit boards directly on the equipment or floor.
Disconnect
Reconnect
OFF
ON

Oki Data CONFIDENTIAL
43641601TH Rev.1 13 /
[Service Tools]
The tools required for field replacement of printed circuit boards, assemblies and units are listed in
Table 2-1.
Table 2-1 Service Tools
No. Service Tools Q' ty Application Remarks
1No.1-100 Philips screwdriver 1 2~2.5mm screws
2No.2-100 Philips screwdriver 1 3~5mm screws
3No.3-100 screwdriver 1
4No.5-200 screwdriver 1
5Digital multimeter 1
6Pliers 1
7Handy cleaner 1

Oki Data CONFIDENTIAL
43641601TH Rev.1 14 /
2.2 Parts Layout
This section explains the layout of main components the equipment.
Figure 2-1
A
A
A’
A’
B
B
C
C
D
D
Cover Assy Top
High voltage power supply1
/Sensor board
Hopping roller
Guide-Sheet
LED panel board
I/D unit
Toner cartridge unit
Solenoid
Resistration roller Drive shaft
Transfer Roller
Roller Pressure B
LED head
Head spring
Heat Assy
Sensor Paper E
Main Motor
Seneor Assy Toner
Seneor Paper Exit

Oki Data CONFIDENTIAL
43641601TH Rev.1 15 /
[Upper cover unit]
Figure 2-2
Upper cover

Oki Data CONFIDENTIAL
43641601TH Rev.1 16 /
[Base unit]
Base plate
Sub high voltage
power supply board
Insulator
Low voltage
power supply
(Flat cable)
Control board
Figure 2-3
Note:The flat cable from the control board is wired under the insulator.

Oki Data CONFIDENTIAL
43641601TH Rev.1 17 /
2.3 How to Change Parts
This section explains how to change parts and assemblies.
2.3.1 Paper Feeder
(1) Unlock the latches at two locations and remove the paper feeder .

Oki Data CONFIDENTIAL
43641601TH Rev.1 18 /
2.3.2 Cover Assy Upper
(1) With the power switch turned off, unplug the power cord from the AC outlet.
(2) Disconnect the interface cable .
(3) Open the cover assy top and remove the I/D unit .

Oki Data CONFIDENTIAL
43641601TH Rev.1 19 /
(4) Remove two screws and unlock the latches at two locations on the front side of the cover assy
upper , and lift up and remove the cover assy upper .
④

Oki Data CONFIDENTIAL
43641601TH Rev.1 20 /
2.3.3 LED Head
(1) Open the cover assy top .
(2) Remove the LED head and then remove the flat cable .
(As two head springs come off at that time, be careful not to lose them.)