Oki B431L6

44983601TH Rev.1
vi /
Oki Data CONFIDENTIAL
Contents
3.3.25 Lever In Sensor / Lever WR Sensor / /Photo Interrupter .........................................................3-32
3.3.26 Paper feeding roller (Roller-Pick-Up,Roller-Feed-NOW,Roller-Assy-MPT) .............................3-33
3.3.27 Frame-Assy-Retard , Spring-Retard........................................................................................3-35
3.4 Lubricating points ............................................................................................................................3-36
4. ADJUSTMENT ..............................................................................................................4-1
4.1 Category and function of maintenance mode ...................................................................................4-1
4.1.1 User maintenance mode (Administrator Menu) .......................................................................4-1
4.1.2 System maintenance mode (System maintenance menu) ........................................................4-6
4.1.3 Self-diagnostic Mode ...............................................................................................................4-11
4.1.4 Energy conservation mode setting ..........................................................................................4-26
4.1.5 EEPROM Initialization .............................................................................................................4-27
4.2 Adjustment at part replacement ......................................................................................................4-28
4.2.1 EEPROM data upload / download method .............................................................................4-28
5. Periodic Maintenance ...................................................................................................5-1
5.1 Periodic Replacement Parts ..............................................................................................................5-1
5.2 Cleaning ............................................................................................................................................5-1
5.3 Cleaning of LED lens array ...............................................................................................................5-1
5.4 Cleaning the Feed rollers and the Retard roller ................................................................................5-2
6. Procedures for Repairing ..............................................................................................6-1
6.1 Troubleshooting .................................................................................................................................6-1
6.2 Points to be checked before modifying printing problems. ................................................................6-1
6.3 Points to be checked when the printing problems are modified ........................................................6-1
6.4 Preparation for Troubleshooting .........................................................................................................6-1
6.5 Troubleshooting Flow ........................................................................................................................6-2
6.5.1 LCD Status Message/ Trouble Table .........................................................................................6-2
6.5.2 LCD Message Troubleshooting ...............................................................................................6-10
6.5.3 Print Troubleshooting ............................................................................................................... 6-18
7. Connection Diagram .....................................................................................................7-1
7.1 Connection diagram ..........................................................................................................................7-1
7.2 Board Layout .....................................................................................................................................7-2
7.3 Resistance value .............................................................................................................................7-16
Appendix A Centronics Parallel Interface .........................................................Appendix A-1
Appendix B USB Interface ................................................................................Appendix B-1
Appendix C Maintenance Manual for Second Tray unit ................................... Appendix C-1
1 Overview .............................................................................................................................Appendix C-1
1.1 Function ........................................................................................................................Appendix C-1
1.2 Exterior and Parts Name ...............................................................................................Appendix C-1
2. Description for Operation of Second Tray unit ..................................................................... Appendix C-2
3. Part Replacement ................................................................................................................Appendix C-3
3.1 Precautions on replacing parts......................................................................................Appendix C-3
3.2 Arrangement of Parts .................................................................................................... Appendix C-4
3.3 How to Replace Parts....................................................................................................Appendix C-5
3.3.1 Roller-Pick-Up, Roller-Feed-Now ...........................................................................Appendix C-6