Oki B4350 - Introduction to Flash DIMM Kits

42641101TH Rev.1 5 /
Oki Data CONFIDENTIAL
4.2 Cleaning.......................................................................................................... 50
4.2.1 Cleaning of LED Lens Array ...................................................................................... 50
4.2.2 Cleaning Page Function ............................................................................................ 51
5. TROUBLESHOOTING PROCEDURES ................................................................. 52
5.1 Troubleshooting Tips ...................................................................................... 52
5.2 Points to Check before Correcting Image Problems....................................... 52
5.3 Tips for Correcting Image Problems ............................................................... 52
5.4 Preparation for Troubleshooting ..................................................................... 53
5.5 Troubleshooting Flow ..................................................................................... 53
5.5.1 LCD Status Message/Problem List............................................................................ 53
5.5.2 LCD Message Troubleshooting ................................................................................. 59
5.5.3 Image Troubleshooting .............................................................................................. 67
6. WIRING DIAGRAM................................................................................................ 76
6.1 Interconnect Signal Diagram .......................................................................... 76
6.2 PCB Layout and Connector Signal List .......................................................... 77
6.3 Resistance Check ........................................................................................... 89
APPENDIX A RS-232C SERIAL INTERFACE (OPTION) ......................................... 91
APPENDIX B CENTRONICS PARALLEL INTERFACE............................................ 96
APPENDIX C UNIVERSAL SERIAL BUS (USB)..................................................... 105
APPENDIX D LOOP TEST (RS-232C INTERFACE) ............................................... 111
APPENDIX E DIAGNOSTICS TEST ........................................................................ 112