Parts Replacement Procedure; Main Controller Pcb; Before Removing The Main Controller Pcb; Removing The Main Controller Pcb - Canon Color imageCLASS MF9170c Service Manual

Chapter 3

3.5 Parts Replacement Procedure

3.5.1 Main Controller PCB

3.5.1.1 Before Removing the Main Controller PCB

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
1) Remove the ETB unit.(page 7-31)Reference [Removing the ETB Unit]
2) Remove the rear cover unit.(page 10-11)Reference [Removing the Rear
Cover Unit]
3) Remove the left cover.(page 10-13)Reference [Removing the Left Cov-
er]
4) Remove the right cover.(page 10-11)Reference [Removing the Right
Cover]
5) Remove the Electrical Components Cover.(page 10-15)Reference [Re-
moving the Electrical Components Cover]
6) Remove the Controller Box.(page 10-15)Reference [Removing the Con-
troller Box]

3.5.1.2 Removing the Main Controller PCB

imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
1) Remove the face cover [1].
- 1 screw [2]
[2] [1]
F-3-15
2) Remove the NCU frame [1].
- 1 flat cable [2] (only of the machine with FAX)
- 1 connectors [3] (only of the machine with FAX)
- 1 connectors [4]
- 6 screws [5]
[5]
[5]
[1]
[3]
F-3-16
3-12
[5]
[4]
[2]
3) Remove the Main controller PCB [1].
- 2 connectors [2]
- 10 screws [3]
[3]
0020-3324
[2]
0020-3325
[3]
Points to Note When Replacing the Main Controller
- If the RAM [4] is installed in the main controller PCB, remove it.
- If a RAM is not installed in the new main controller, install the removed
RAM [4].
3.5.1.3 Procedure after Replacing the Main Controller
PCB
imageCLASS MF9170c / imageCLASS MF9150c / imageCLASS MF8450c
After replacing the main controller PCB with new one, perform the follow-
ing procedure.
1. Backup the user data
Import the user data using the remote UI.
The machine does not support "Import/export via USB" (provided in the
following service SW) because it supports network as standard function.
# COPIER->FUNCTION->PARAM->SYS-SW->Bit Switch->SW 02 Bit6
2. Enter the flicker adjustment value of the control panel
1) Using the service mode, check the flicker value of the control panel.
TESTMODE> PANEL> FLICKER CHECK START> FLICKER AD-
JUST
MEMO:
The flicker adjustment value can be also checked in the spec list (FLICKER
ADJ PRM).
How to output the spec list: COPIER> FUNCTION> MISC-P> OUTPUT>
SPEC
2) Replace the main controller PCB.
3) Using the service mode, enter the adjustment value checked in Step 1).
TESTMODE> PANEL> FLICKER CHECK START> FLICKER AD-
JUST
4) Using the user mode, execute automatic gradation correction (full correc-
tion).
Initial Setting/Registration> Adjustment/Cleaning> Automatic Gradation
Correction> Full Correction
[1]
[4]
F-3-17
T-3-4
0021-0348