Canon imageCLASS X LBP1238 II Service Manual page 7

5. Parts Replacement and Cleaning................................................................. 72
List of Parts....................................................................................................................................... 73
Major Units......................................................................................................................................... 73
Layout Drawing of Electrical Components............................................................................................. 76
External Cover System......................................................................................................................81
Removing the Cartridge.......................................................................................................................81
Removing the Right Cover................................................................................................................... 82
Removing the Left Cover..................................................................................................................... 85
Removing the Left Rear Cover............................................................................................................. 89
Removing the Front Cover................................................................................................................... 90
Removing the Rear Cover....................................................................................................................91
Removing the Upper Cover + Output Tray(5 Line Panel Model)..............................................................92
Removing the Upper Cover + Output Tray(Touch Panel Model)............................................................. 94
Controller System..............................................................................................................................97
Removing the Control Panel Unit .........................................................................................................97
Removing the Control Panel Unit..........................................................................................................98
Removing the Wireless LAN PCB.......................................................................................................101
Removing the Wireless LAN Unit........................................................................................................102
Removing the USB Unit..................................................................................................................... 102
Removing the USB PCB.................................................................................................................... 103
Removing the Main Fan.....................................................................................................................104
Removing the Main Controller PCB.................................................................................................... 105
Removing the Main Controller Unit..................................................................................................... 106
Removing the DC Controller PCB Cover............................................................................................. 107
Remove the DC Controller PCB......................................................................................................... 108
Removing the High Voltage Power Supply PCB.................................................................................. 108
Removing the Low Voltage Power Supply Unit.................................................................................... 110
Removing the Relay PCB.................................................................................................................. 111
Laser Exposure System.................................................................................................................. 113
Removing the Laser Scanner Unit...................................................................................................... 113
Image Formation System................................................................................................................ 115
Removing the Transfer Roller.............................................................................................................115
Fixing System..................................................................................................................................116
Removing the Fixing Assembly.......................................................................................................... 116
Removing the Fixing Motor................................................................................................................ 118
Pickup Feed Delivery System......................................................................................................... 119
Removing the Cassette Pickup Roller Unit.......................................................................................... 119
Removing the Cassette Separation Roller Unit.................................................................................... 119
Removing the Multi-purpose Tray Pickup Roller Unit............................................................................120
Removing the MP Tray Separation Pad.............................................................................................. 120
Removing the Registration Unit.......................................................................................................... 122
6. Adjustment................................................................................................... 126
Actions at Parts Replacement......................................................................................................... 127
After Replacing the Control Panel.......................................................................................................127
Before Replacing the Main Controller PCB..........................................................................................127
After Replacing the Main Controller PCB.............................................................................................127
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