Removing The Pickup Unit (Mf4780W/Mf4770N/Mf4750/Mf4730) - Canon imageCLASS MF4890dw Service Manual

4
Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit (MF4780w/MF4770n/MF4750/MF4730) > Procedure
Removing the Pickup Unit (MF4780w/MF4770n/
MF4750/MF4730)
■ Preparation
1) Remove the left cover
2)Remove the SADF unit 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
8)Remove the FAX NCU PCB(MF4780w/MF4770n/MF4750)
9)Remove the separation pad
■ Procedure
(MF4780w/MF4770n/MF4750)
1)Remove the main controller mounting plate[1]
• 4 screws(with washer)[2]
• 2 screws(black TP)[3]
[1]
x6
[3]
(MF4730)
1)Remove the main controller mounting plate[1]
• 1 screw(with washer)[2]
• 1 screw(black TP)[3]
4 Disassembly/Assembly > Pickup And Feeding System > Removing the Pickup Unit (MF4780w/MF4770n/MF4750/MF4730) > Procedure
[2]
[2]
F-4-992
x2
[1]
2)Disconnect the terminal[1], free the harness[2] from the harness guide[A], and then put it
through the hole[B].
[A]
[2] [1]
4-362
[3] [2]
F-4-993
[2] [B]
F-4-994
4-362