41154001TH Rev.2 5 /4. ADJUSTMENT ................................................................................................... 744.1 Adjustment Types and Functions ................................................................. 744.1.1 Status Monitor ........................................................................................................... 744.1.2 Engine Maintenance Utility ....................................................................................... 754.2 Adjustment When Replacing a Part ............................................................. 754.2.1 Setting of LED Head Drive Time ............................................................................... 754.2.2 Uploading and Downloading EEPROM Data ............................................................ 765. PERIODICAL MAINTENANCE........................................................................... 775.1 Periodical Replacement Parts ...................................................................... 775.2 Cleaning ....................................................................................................... 775.2.1 Cleaning of LED Lens Array ..................................................................................... 775.2.2 Cleaning Page Function ........................................................................................... 796. TROUBLESHOOTING PROCEDURES ............................................................. 806.1 Troubleshooting Tips .................................................................................... 806.2 Check Points Before Correcting Image Problems ........................................ 806.3 Notes When Correcting Image Problems ..................................................... 806.4 Preparation Before Troubleshooting ............................................................. 806.5 Troubleshooting ............................................................................................ 826.5.1 Status Monitor Message List .................................................................................... 826.5.2 Status Message Troubleshooting ............................................................................. 866.5.3 Image Troubleshooting ............................................................................................. 957. WIRING DIAGRAM ......................................................................................... 1047.1 Interconnect Signal Diagram ...................................................................... 1047.2 PCB Layout and Connector Signal List ...................................................... 1057.3 Resistance Check .......................................................................................1148. PARTS LIST ......................................................................................................116Appendix A RS-232C SERIAL INTERFACE (option) ............................................. 123Appendix B CENTRONICS PARALLEL INTERFACE ............................................ 126APPENDIX C MAINTENANCE UTILITY GUI MANUAL (OKIPAGE 10e) .............. 130APPENDIX D MULTI-PURPOSE FEEDER ........................................................... 1341. OUTLINE ...................................................................................................... 1341.1 Functions .............................................................................................. 1341.2 External View and Component Names ................................................ 1342. MECHANISM DESCRIPTION ...................................................................... 1352.1 General Mechanism ............................................................................. 1352.2 Hopper Mechanism .............................................................................. 1353. PARTS REPLACEMENT .............................................................................. 1363.1 Precautions Concerning Parts Replacement ....................................... 1363.2 Parts Layout ......................................................................................... 138