Brother HL-2400C Service Manual page 6

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