Canon imageCLASS MF4890dw, Service Manual, Page: 312 / 511

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Disassembly/Assembly > Controller System > Removing the Engine Controller PCB (MF4720w/MF4712/MF4710) > Proce
d
ure
Disassembly/Assembly > Controller System > Removing the Engine Controller PCB (MF4720w/MF4712/MF4710) > Proce
d
ure
Removing the Engine Controller PCB (MF4720w/
MF4712/MF4710)
■ Preparation
1) Remove the left cover
2)Remove the copyboard cover and reader unit.
3)Remove the right cover
4)Remove the front cover unit.
5)Remove the upper cover.
6)Remove the duplex feed unit.
7)Remove the main controller PCB
■
Proce
d
ure
1)Remove the main controller mounting plate[1]
• 1 screw(with washer)[2]
• 1 screw(black TP)[3]
x2
[1]
[2] [3]
F-4-625
2)Disconnect the terminal[1], free the harness[2] from the harness guide[A], and then put it
through the hole[B].
[1] [2]
[A]
[2] [B]
Caution:
When connecting the terminal[1], be sure that the contact spring[2] is in contact with
it.
[2]
[1]
F-4-627
F-4-626