Canon iR2422 series, Service Manual

Page: 239 / 308

Chapter 11
11-1
11.1 Scanning System
11.1.1 Procedure after Replacing the CIS
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After replacing the contact image sensor (CIS), go through the following
steps to perform inter-channel output correction:
1) Enter the service mode.
Sequentially press the Additional Functions, # key on the operation panel.
2) Using the upper/lower arrow keys on the operation panel, select "Test".
3) Press the OK key.
4) Using the upper/lower arrow keys on the operation panel, select "Scanner
test".
5) Press the OK key.
6) Using the upper/lower arrow keys on the operation panel, select "CS Out-
put Test".
7) Press the OK key.
8) Select "Yes" and then press the OK key.
After completion of the above steps, contact sensor output correction will be
performed and parameters will be set automatically.
11.2 Image Formation System
11.2.1 Procedure after Replacing the Developing
Assembly
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<Going through the Developer Idling Mode>
1) Plug the power cord into the outlet.
2) Open the front cover.
3) With the front cover open, turn on the main power switch.
4) When a message appears on the operation panel display, press the follow-
ing keys to enter the service mode:
Additional Functions key > # key
5) Select "Service's Choice" using the arrow key, and then press the OK key.
6) Select "Printer Setting" using the arrow key, and hen press the OK key.
7) Select "BitSwitch14" using the arrow key, and hen press the OK key.
8) Select "SW-14-1" using the arrow key, and hen press the OK key.
9) Select "On" using the arrow key, and hen press the OK key.
10) Press the Reset key to exit the service mode.
11) Close the front cover. The machine will run in the developer idling mode
for about 1 minute.
12) When the machine stops, the idling mode ends.
Install, the toner cartridge following the above-mentioned procedure.
11.3 Electrical Components
11.3.1 Procedure after Replacing the Image Processor
PCB
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If you have replaced the image processor PCB with a new one, perform the
following operations:
- Using the user support tool, download the latest firmware (System/Boot).
- Input the all value printed on the service label affixed to the rear cover.
Make the following adjustments:
- Correction of output between CIS channels
1) Enter the service mode.
Sequentially press the Additional Functions, # key on the operation panel.
2) Using the upper/lower arrow keys on the operation panel, select "Test".
3) Press the OK key.
4) Using the upper/lower arrow keys on the operation panel, select "Scanner
test".
5) Press the OK key.
6) Using the upper/lower arrow keys on the operation panel, select "CS Out-
put Test".
7) Press the OK key.
8) Select "Yes" and then press the OK key.
After completion of the above steps, contact sensor output correction will be
performed and parameters will be set automatically.
- Read position adjustment (Stream reading: Only when the ADF is installed)
1) Enter the service mode.
Sequentially press the Additional Functions, # key on the operation panel.
2) Using the upper/lower arrow keys on the operation panel, select "Test".
3) Press the OK key.
4) Using the upper/lower arrow keys on the operation panel, select "Scanner
test".
5) Press the OK key.
6) Using the upper/lower arrow keys on the operation panel, select "CS Po-
sition Test".
7) Press the OK key.
8) Select "Yes" and press the OK key.
The optical system starts scanning. Several seconds later, automatic adjust-
ment of the reading position finishes and "OK" appears.
After replacing the developing assembly, go through the following
steps in the developing assembly idle rotation mode before installing the
toner cartridge.