Canon LBP3300 Series, Service Manual

Page: 49 / 97

Chapter 3
3-4
3.1.9 Engine controller board
3.1.9.1 Preparation for removing the engine controller
PCB
0011-5000
1) Detach the left cover.
(page 3-1)
Reference[Detaching the left cover]
2) Detach the right cover. (page 3-1) Reference[Detaching the right cover]
3) Detach the rear cover. (page 3-1) Reference[Removing the rear cover
unit.]
4) Detach the upper cover.
(page 3-2)
Reference[Detaching the upper cover
unit]
5) Remove the video controller PCB. (page 3-
5)
éQèý[ÉrÉfÉIÉRÉìÉgÉçÅ[ÉââÒòHäÓî¬ÇÃéÊäOǵ]
6) Remove the USB PCB. (page 3-5) éQèý[USBâÒòHäÓî¬ÇÃéÊäOǵ]
7) Remove the fixing assembly. (page 3-8) Reference[Removing the fixing
assembly]
8) Remove the door switch unit.
(page 3-5)
Reference[Removing the door
switch]
3.1.9.2 Removing the engine controller PCB
0011-5006
1) Remove the feeder guide [1].
- 3 connectors [2]
F-3-25
2) Unscrew a screw [1] at the right side of main body.
F-3-26
3) Release the harness [2] from the harness guide [1].
4) Open the main body frame slightly to both sides, lower the engine
controller assembly [3], and pull it out to remove.
- 2 screws [4]
F-3-27
5) Remove the engine controller PCB [1].
- 4 screws [2]
F-3-28
Note when mounting the engine controller PCB
When mounting the engine controller PCB, be sure to run the harness [1] and
the flat cable [2] through the hole of sheet metal beforehand.
F-3-29
3.1.10 Duplexing Driver Board
3.1.10.1 Preparation for removing the duplexing driver
PCB
0011-5170
1) Detach the left cover. (page 3-1) Reference[Detaching the left cover]
2) Detach the right cover.
(page 3-1)
Reference[Detaching the right cover]
3) Detach the rear cover. (page 3-1) Reference[Removing the rear cover
unit.]
3.1.10.2 Removing the duplexing driver PCB
0011-5171
1) Disconnect a connector [1] to release it from the harness guide.
F-3-30
2) Remove the duplexing driver PCB [1].
- A connector [2]
- A screw [3]
F-3-31