Oki B4100 Maintenance Manual page 5

5. TROUBLESHOOTING PROCEDURES ................................................................. 44
5.1 Troubleshooting Tips ...................................................................................... 44
5.2 Check Points Before Correcting Image Problems .......................................... 44
5.3 Notes When Correcting Image Problems ....................................................... 44
5.4 Preparation Before Troubleshooting ............................................................... 44
5.5 Troubleshooting .............................................................................................. 47
5.5.1 Status Monitor Message List ..................................................................................... 47
5.5.2 Status Message Troubleshooting .............................................................................. 51
5.5.3 Image Troubleshooting .............................................................................................. 58
6. WIRING DIAGRAM ................................................................................................ 67
6.1 Interconnect Signal Diagram .......................................................................... 67
6.2 PCB Layout and Connector Signal List .......................................................... 68
6.3 Resistance Check ........................................................................................... 75
APPENDIX A CENTRONICS PARALLEL INTERFACE (ODA230V/OEL/AOS ONLY) .... 77
APPENDIX B UNIVERSAL SERIAL BUS (USB) ....................................................... 83
42640901TH Rev.1
Oki Data CONFIDENTIAL
5 /