Canon iR4570 Series Service Manual page 21

10.5.1.3 Removing the Main Drive Assembly ............................................................................................ 10- 18
10.5.2 Power Supply Unit ................................................................................................................................ 10- 18
10.5.2.1 Removing the Rear Cover ............................................................................................................. 10- 18
10.5.2.2 Removing the Left Cover (lower) ................................................................................................. 10- 19
10.5.2.3 Removing the Accessories Power Supply PCB ............................................................................ 10- 19
10.5.2.4 Removing the Main Power Supply................................................................................................ 10- 20
10.5.3 Control Panel ........................................................................................................................................ 10- 21
10.5.3.1 Removing the Control Panel ......................................................................................................... 10- 21
10.5.4 Control Panel LCD Unit ....................................................................................................................... 10- 22
10.5.4.1 Removing the Control Panel ......................................................................................................... 10- 22
10.5.4.2 Removing the Control Panel Base Cover...................................................................................... 10- 23
10.5.4.3 Removing the Control Panel Inside Frame ................................................................................... 10- 23
10.5.4.4 Removing the Control Panel LCD ................................................................................................ 10- 24
10.5.5 Removing the DC Controller PCB ....................................................................................................... 10- 24
10.5.5.1 Removing the Rear Cover ............................................................................................................. 10- 24
10.5.5.2 Removing the DC Controller PCB ................................................................................................ 10- 24
10.5.6 Control Panel Inverter PCB .................................................................................................................. 10- 25
10.5.6.1 Removing the Control Panel ......................................................................................................... 10- 25
10.5.6.2 Removing the Control Panel Base Cover...................................................................................... 10- 26
10.5.6.3 Removing the Control Panel Inverter PCB ................................................................................... 10- 26
10.5.7 Control Panel Key Switch PCB ............................................................................................................ 10- 26
10.5.7.1 Removing the Control Panel ......................................................................................................... 10- 26
10.5.7.2 Removing the Control Panel Base Cover...................................................................................... 10- 27
10.5.7.3 Removing the Control Panel Frame .............................................................................................. 10- 28
10.5.7.4 Removing the Control Panel Key Switch PCB ............................................................................. 10- 28
10.5.8 Control Panel CPU PCB ....................................................................................................................... 10- 29
10.5.8.1 Removing the Control Panel ......................................................................................................... 10- 29
10.5.8.2 Removing the Control Panel Base Cover...................................................................................... 10- 30
10.5.8.3 Removing the Controller Panel CPU PCB.................................................................................... 10- 30
10.5.9 All Night Power Supply PCB ............................................................................................................... 10- 30
10.5.9.1 Removing the Rear Cover ............................................................................................................. 10- 30
10.5.9.2 Removing the All-Night Power Supply PCB................................................................................ 10- 31
10.5.10 Controller Power Supply PCB ............................................................................................................ 10- 31
10.5.10.1 Removing the Rear Cover ........................................................................................................... 10- 31
10.5.10.2 Removing the Left Cover (lower) ............................................................................................... 10- 32
10.5.10.3 Removing the Left Cover (Rear)................................................................................................. 10- 32
10.5.10.4 Removing the Accessories Power Supply PCB .......................................................................... 10- 32
10.5.10.5 Removing the Controller Power Supply PCB ............................................................................. 10- 33
10.5.11 Option Power Supply PCB ................................................................................................................. 10- 33
10.5.11.1 Removing the Rear Cover ........................................................................................................... 10- 33
10.5.11.2 Removing the Left Cover (lower) ............................................................................................... 10- 34
10.5.11.3 Removing the Left Cover (Rear)................................................................................................. 10- 34
10.5.11.4 Removing the Accessories Power Supply PCB .......................................................................... 10- 34
10.5.12 High-Voltage PCB .............................................................................................................................. 10- 35
10.5.12.1 Removing the Front Cover Unit .................................................................................................. 10- 35
10.5.12.2 Removing the Waste Toner Case ................................................................................................ 10- 35
10.5.12.3 Removing the Toner Cartridge.................................................................................................... 10- 36
10.5.12.4 Removing the Drum Unit ............................................................................................................ 10- 37
10.5.12.5 Removing the Developing Assembly.......................................................................................... 10- 38
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