Canon iR4570 Series Service Manual page 561

10.5.10.5 Removing the Controller Power Supply PCB .............................................................................. 10-66
10.5.11 Option Power Supply PCB.................................................................................................................. 10-67
10.5.11.1 Removing the Rear Cover ............................................................................................................ 10-67
10.5.11.2 Removing the Left Cover (lower) ................................................................................................ 10-68
10.5.11.3 Removing the Left Cover (Rear).................................................................................................. 10-69
10.5.11.4 Removing the Accessories Power Supply PCB ........................................................................... 10-69
10.5.12 High-Voltage PCB .............................................................................................................................. 10-70
10.5.12.1 Removing the Front Cover Unit ................................................................................................... 10-70
10.5.12.2 Removing the Waste Toner Case ................................................................................................. 10-71
10.5.12.3 Removing the Toner Cartridge..................................................................................................... 10-72
10.5.12.4 Removing the Drum Unit ............................................................................................................. 10-73
10.5.12.5 Removing the Developing Assembly........................................................................................... 10-75
10.5.12.6 Removing the Upper Tray ............................................................................................................ 10-77
10.5.12.7 Removing the Toner Cartridge Cover .......................................................................................... 10-78
10.5.12.8 Removing the Pre-Exposure Lamp .............................................................................................. 10-78
10.5.12.9 Removing the Left Cover ............................................................................................................. 10-79
10.5.12.10 Removing the Laser Unit............................................................................................................ 10-80
10.5.12.11 Removing the Hopper Assembly................................................................................................ 10-82
10.5.12.12 Removing the Right Cover (rear) ............................................................................................... 10-83
10.5.12.13 Removing the Right Door .......................................................................................................... 10-84
10.5.12.14 Removing the Right Door .......................................................................................................... 10-86
10.5.12.15 Removing the Right Door .......................................................................................................... 10-88
10.5.12.16 Removing the Fixing Unit .......................................................................................................... 10-89
10.5.12.17 Removing the Gear..................................................................................................................... 10-92
10.5.12.18 Removing the High-Voltage PCB .............................................................................................. 10-93
10.5.13 Exhaust Fan ......................................................................................................................................... 10-94
10.5.13.1 Removing the Heat Discharge Fan............................................................................................... 10-94
10.5.13.2 Removing the Heat Discharge Fan............................................................................................... 10-95
10.5.14 Motor of Main Drive Assembly .......................................................................................................... 10-97
10.5.14.1 Removing the Rear Cover ............................................................................................................ 10-97
10.5.14.2 Removing the Main Drive Assembly ........................................................................................... 10-98
10.5.14.3 Removing the Main Drive Motor ................................................................................................. 10-99
10.5.14.4 Removing the Main Drive Motor ............................................................................................... 10-101
10.5.15 Fixing Driver Motor .......................................................................................................................... 10-102
10.5.15.1 Removing the Rear Cover .......................................................................................................... 10-102
10.5.15.2 Removing the DC Controller PCB ............................................................................................. 10-102
10.5.15.3 Removing the Fixing Drive Motor ............................................................................................. 10-104
10.5.16 Right Door ......................................................................................................................................... 10-105
10.5.16.1 Removing the Right Cover (rear) ............................................................................................... 10-105
10.5.16.2 Removing the Right Door .......................................................................................................... 10-105
10.5.16.3 Removing the Right Door .......................................................................................................... 10-107
10.5.17 Circuit Braker .................................................................................................................................... 10-108
10.5.17.1 Removing the Rear Cover .......................................................................................................... 10-108
10.5.17.2 Removing the Circuit Breaker.................................................................................................... 10-109
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