Removing The Main Controller Pcb (Mf4780W/Mf4770N/Mf4750/Mf4730); Preparation; Procedure - Canon imageCLASS MF4890dw Service Manual

4
Disassembly/Assembly > Controller System > Removing the Main Controller PCB (MF4780w/MF4770n/MF4750/MF4730) > Procedure
Caution:
When reassembling, attach the engine controller PCB to the hook [1] and then
mount the switchboard [3] to the lower side of the switch arm [2].
[2]
[3]
Ensure that the switch arm [1] can move vertically.
[1]
4 Disassembly/Assembly > Controller System > Removing the Main Controller PCB (MF4780w/MF4770n/MF4750/MF4730) > Procedure
[2]
[3]
[1]
[2]
[3]
F-4-574
Removing the Main Controller PCB (MF4780w/
MF4770n/MF4750/MF4730)

■ Preparation

1) Remove the left cover

■ Procedure

1)Remove the 3 flat cables[1] and 3 connectors[2].
x6
[1]
2)Remove the main controller PCB[1].
• 1 screw(bind)[2]
• 4 screws(black TP)[3]
[3]
x5
[2]
[3]
4-220
[2]
F-4-575
[1]
[3]
F-4-576
4-220