Canon ImageCLASS MF4690, Service Manual

Page: 102 / 182

Chapter 9
9-4
Make sure to attach the link stopper [2] after attaching the right cover. If at-
taching the link stopper while attaching the printer cover, it may drop inside
the machine.
4) With the printer cover [1] opened, detach it upward.
F-9-15
9.3.7 Operation Panel Unit
9.3.7.1 Removing the Control Panel Unit
0016-4991
1) Remove the 4 screws [1] and the 2 claws [2].
F-9-16
2) Disconnect the connector [1], and remove the control panel unit [2].
F-9-17
9.3.8 SCNT Board
9.3.8.1 Preparation for Removing the SCNT Board
0016-4992
Outputting report
Before replacing the SCNT board, output and record the report for the
information such as the user setting and the setting of the service mode.
Service mode > REPORT
Initial setting/registration > Report setting > Report output
9.3.8.2 Removing the SCNT Board
0016-5001
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-9-18
6) Remove the Analog processor PCB.
7) Remove the SCNT board [1].
- 9 connectors [2]
- 4 flatcables [3]
- 9 screws [4]
F-9-19
9.3.8.3 Actions At Replacing the SCNT Board
0016-5066
Outputting report
Before replacing the SCNT board, output and record the report for the
information such as the user setting and the setting of the service mode.
Service mode > REPORT
Initial setting/registration > Report setting > Report output
After replacing the SCNT board, enter the user data and the service data
according to the report.
Changing the jumper connector
When replacing the SCNT board, change the position of the jumper
connector to ON.
* The SCNT board is shipped with the jumper connector of the lithium
battery OFF.
9.3.9 DCNT Board
9.3.9.1 Preparation for Removing the DCNT Board
0016-5004
1) Remove the front cover.
2) Remove the right cover.
3) Remove the left cover.
9.3.9.2 Removing the DCNT Board
0016-5005
1) Remove the 2 guides [1] in the direction of the arrow.