Dc Controller Pcb; Before Removing The Dc Controller Pcb; Removing The Dc Controller Pcb; After Replacing The Dc Controller Pcb - Canon LBP5050 Series Service Manual

Chapter 3
[2]
[3]

3.1.12 DC Controller PCB

3.1.12.1 Before Removing the DC Controller PCB

LBP5050N / LBP5050
1) Remove the right cover. (page 3-2)[Removing the Right Cover]

3.1.12.2 Removing the DC Controller PCB

LBP5050N / LBP5050
1) Free the claw [1] and remove the guide [2] in the direction of the arrow.
[1]
3-10
[1]
F-3-43
[2]
F-3-44
2) Remove the 3 flat cables [1].
[1]
3) Remove the DC controller PCB [1].
- 16 connectors [2]
- 4 screws [3]
[3]
[2]
0018-7634
[1]
0018-7631
[2]

3.1.12.3 After Replacing the DC controller PCB

LBP5050N / LBP5050
The information in the NVRAM on the DC controller PCB is saved as back-
up data in the NVRAM on the main controller PCB.
Executing Printer Setting Restoration in service mode recovers the backup
data in the NVRAM on the DC controller PCB.
When replacing the DC controller PCB, execute recovery of backup data,
color displacement correction, and calibration in service mode.
1) Execute Option Menu > Service Mode > Printer Information settings >
Printer Setting Restoration.
After executing the printer recovery setting, wait completion of the
processing for approx. 15 sec.
2) Turn off/on the power supply of the host machine.
3) Start the Status window.
4) Execute Option Menu > Utility > Out-of-Register Colors Correction.
5) Execute Option Menu > Utility > Calibration.

3.1.13 Main Controller PCB

3.1.13.1 Before Removing the Main Controller PCB

LBP5050N / LBP5050
F-3-45
[2]
[3]
[2]
[3]
[3] [2]
F-3-46
T-3-1
0019-4758
0019-0204