2. STRUCTURE OF THE CONTROL SYSTEM..............................................IV-27
2.1 Basic Structure.................................................................................................................IV-27
2.2 Control System.................................................................................................................IV-36
2.3 Main PCB (Video Controller PCB)....................................................................................IV-46
2.4 Power Supply Unit............................................................................................................IV-58
2.5 High Voltage Power Supply Unit......................................................................................IV-61
2.6 Wiring Diagram.................................................................................................................IV-64
CHAPTER V CONTROL PANEL OPERATION..............................V-1
1. PANEL LAYOUT.............................................................................................V-1
2. VIDEO CONTROLLER MODE.......................................................................V-2
2.1 Configuration of Operational Mode.....................................................................................V-2
2.2 Toner Save Mode / Power Save Mode...............................................................................V-3
2.3 Line Test Mode...................................................................................................................V-4
2.4 DRAM Test Mode................................................................................................................V-8
2.5 Program Version Display Mode..........................................................................................V-9
2.6 Test Print Mode.................................................................................................................V-10
2.7 NVRAM Reset Mode.........................................................................................................V-10
3. ENGINE CONTROLLER MODE...................................................................V-11
3.1 Configuration of Operational Mode...................................................................................V-11
3.2 Operation of Normal Mode................................................................................................V-13
3.3 Service Mode....................................................................................................................V-19
3.4 Adjustment Work Procedures...........................................................................................V-39
CHAPTER VI PERIODIC MAINTENANCE.....................................VI-1
1. GENERAL......................................................................................................VI-1
1.1 Handling Precautions.........................................................................................................VI-1
1.2 Periodic Maintenance Cleaning..........................................................................................VI-4
1.3 Periodic Maintenance Parts and Maintenance Cycle.......................................................VI-15
2. PERIODIC MAINTENANCE PROCEDURES..............................................VI-18
2.1 OPC Belt Cartridge Replacement....................................................................................VI-18
2.2 Fusing Unit Replacement.................................................................................................VI-20
2.3 Transfer Roller Replacement...........................................................................................VI-22
2.4 Paper Discharger Unit Replacement................................................................................VI-24
2.5 Drum Cleaner Replacement.............................................................................................VI-26
2.6 Ozone Filter Replacement...............................................................................................VI-28
2.7 Paper Feed Roller and Separator Pad Replacement.......................................................VI-29
2.8 Transfer Drum Replacement............................................................................................VI-30
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