Maintenance Manual OKI B411, B431;
This manual, OKI B411, B431, is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your OKI B411, B431 copier.
You can print, zoom or read any diagram, picture or page from this Service Manual. Every chapter on this manual is fully detailed and contain all the simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of OKI B411, B431 photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

1. CONFIGURATION
1.1 System Configuration
1.2 Printer Configuration
1.3 Optional Configuration
1.4 Specification
1.5 Printing display
1.5.1 VCCI label, Serial No. label
1.5.2 Warning label
1.5.3 Warning / Caution display

2. OPERATION EXPLANATION
2.1 Electrophotographic process mechanism
2.2 Printing process
2.3 Toner entrance detection

3. PARTS REPLACEMENT
3.1 Preparation for parts replacement
3.2 Parts layout
3.3 Parts replacement method
3.3.1 LED Head
3.3.2 Roller-Transfer
3.3.3 Duplex Belt
3.3.4 Cover-Side-R
3.3.5 Cover-Side-L
3.3.6 CU-Board
3.3.7 Power Supply Unit
3.3.8 DC Motor
3.3.9 Hopping / MPT / Regist Clutch
3.3.10 HV-Board / Motor-FAN
3.3.11 Cover Assy OPE
3.3.12 Ope PCB Assy ( B431 )
3.3.13 Cover Assy Stacker
3.3.14 Stacker Cover
3.3.15 Fuser Assy
3.3.16 MPT Assy , Manual Assy)
3.3.17 Cover Assy Rear
3.3.18 Guide Eject Lower Assy
3.3.19 Eject Motor
3.3.20 Plate Side R Assy / Plate Side L Assy / Front Assy
3.3.21 Plate Side L Assy
3.3.22 Plate Side R Assy
3.3.23 Roller Regist
3.3.24 Roller Feed Assy
3.3.25 Lever In Sensor / Lever WR Sensor / /Photo Interrupter
3.3.26 Paper feeding roller (Roller-Pick-Up,Roller-Feed-NOW,Roller-Assy-MPT)
3.3.27 Frame-Assy-Retard , Spring-Retard
3.4 Lubricating points

4. ADJUSTMENT
4.1 Category and function of maintenance mode
4.1.1 User maintenance mode (Administrator Menu)
4.1.2 System maintenance mode (System maintenance menu)
4.1.3 Self-diagnostic Mode
4.1.4 Energy conservation mode setting
4.1.5 EEPROM Initialization
4.2 Adjustment at part replacement
4.2.1 EEPROM data upload / download method

5. PERIODIC MAINTENANCE
5.1 Periodic Replacement Parts
5.2 Cleaning
5.3 Cleaning of LED lens array
5.4 Cleaning the Feed rollers and the Retard roller

6. PROCEDURES FOR REPAIRING
6.1 Troubleshooting
6.2 Points to be checked before modifying printing problems
6.3 Points to be checked when the printing problems are modified
6.4 Preparation for Troubleshooting
6.5 Troubleshooting Flow
6.5.1 LCD Status Message/ Trouble Table
6.5.2 LCD Message Troubleshooting
6.5.3 Print Troubleshooting

7. CONNECTION DIAGRAM
7.1 Connection diagram
7.2 Board Layout
7.3 Resistance value

Appendix A Centronics Parallel Interface
Appendix B USB Interface
Appendix C Maintenance Manual for Second Tray unit
1 Overview
1.1 Function
1.2 Exterior and Parts Name
2. Description for Operation of Second Tray unit
3. Part Replacement
3.1 Precautions on replacing parts
3.2 Arrangement of Parts
3.3 How to Replace Parts
3.3.1 Roller-Pick-Up, Roller-Feed-Now
3.3.2 Guard-Connector, Connector (9715S-08Z02-G4C)
3.3.3 Board-GOG
3.3.4 CONN Cord-AMP8P-AMP8P
3.3.5 Gear-Assy-Clatch (Hop, Regist), Motor-Pulse
3.3.6 Frame-Assy-Retard, Spring-Retard
4. Cleaning of Paper Feed Roller and Separation Roller
5. Procedure for Troubleshooting
5.1 Precautions for Troubleshooting
5.2 Preparation before Troubleshooting
5.3 Troubleshooting Method
5.3.1 LCD Status Message List
6. Connection Diagram
6.1 Connection diagram
6.2 Board Arrangement
Appendix D Network Interface

Number of pages: 184.