Canon imageRUNNER ADVANCE C5255, Руководство по обслуживанию, Страница: 410 / 1443

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Parts Replacement and Cleaning > Main Controller > Removing the DC Controller PCB > Procedure
Parts Replacement and Cleaning > Main Controller > Removing the DC Controller PCB > Procedure
2-2) Avoid the harness and open the Controller Box and the FAX Unit.
• 3 screws
x3
CAUTION:
Close the Controller Box while pressing the cable with afinger. Check that the cable is
stored when closeing the box.
Cable
F-4-77
F-4-76
Removing the DC Controller PCB
■ Actions before Replacement
When replacing the DC Controller PCB, execute the following Service Mode to backup the
DC Controller PCB SRAM.
Execute COPIER > FUNCTION > SYSTEM > DSRAMBUP (LEVEL2).
After “ACTIVE” is displayed for approx. 2 minutes, “OK!” is displayed.
After the above execution is completed, turn OFF the main power supply.
■
Preparations
1) Open the Right Lower Cover and Right Upper Cover.(Refer to page 4-84)
2) Remove the Right Rear Cover.
3) Remove the Left Rear Cover and the Left Rear Sub Cover.(Refer to page 4-86)
4) Remove the Rear Cover.(Refer to page 4-89)
5) Open the Controller Box.(Refer to page 4-89)
■ Procedure
1) Remove the DC Controller PCB
• 22 connectors
• 7 screws
x7
x22
DC Controller PCB
Connectors
F-4-78