Canon ImageCLASS MF4690 Service Manual - page 45
Chapter 3
3-5
3.3 Parts Replacement Procedure
3.3.1 Scanner Unit
3.3.1.1 Preparation for Removing the Control Panel
Assembly
0016-5024
1) Remove the front cover.
2) Remove the right cover.
3) Remove the left cover.
4) Remove the rear cover.
5) Remove the frame [1].
- 11 screws [2]
F-3-4
6) Remove the Analog processor PCB.
3.3.1.2 Removing the Control Panel Assembly
0016-5025
1) Disconnect the 5 connectors [1], and remove the 1 screw [2] of the ground-
ing wire.
F-3-5
2) Open the control panel assembly [1] to remove it upward.
F-3-6
3.3.2 Book Motor
3.3.2.1 Preparation for Removing the Flat Bed Motor
0016-5032
1) Remove the front cover.
2) Remove the right cover.
3) Remove the left cover.
4) Remove the rear cover.
5) Remove the control panel assembly.
3.3.2.2 Removing the Flat Bed Motor
0016-5033
1) Open the copyboard glass cover [1], and remove it upward.
Pull out the hinge [2] on the left side while keeping it tilted toward the
back.
Place the detached copyboard glass cover on cloth etc. not to damage the bot-
tom sheet.
F-3-7
2) Reverse the copyboard [1] and detach the bottom cover [4].
- 2 screws [2]
- 5 claws [3]
F-3-8
3) Free the cable [1] from the cable guide [2].
F-3-9
4) Reverse the copyboard [1] again.
5) Remove the 4 screws [2], and detach the copyboard cover [3].
6) Remove the copyboard glass [4].
Do not make dirty the bottom of the copyboard glass.