Scanner Motor; Removing The Scanner Motor; Contact Sensor; Removing The Contact Image Sensor (Cis) - Canon iR2422 series Service Manual

20) Remove the reader controller PCB [1] from the mount.
- Screws [2] 3 pcs.
[1]

4.4.3 Scanner Motor

4.4.3.1 Removing the Scanner Motor

1) Remove the rear cover.
2) Remove the left cover (rear).
3) Remove the copyboard cover (When the ADF is equipped, open the
ADF).
4) Remove the small cover.
5) Disconnect the ground cable of the ADF harness (Only for the ADF
equipped).
6)Remove the ADF harness (Only for the ADF equipped).
7) Remove ther reader rear cover.
8) Remove the scanner motor.
- Connector [2] 1 pc.
- Screw [3] 2 pcs.
- Spring [4] 1 pc.
[1]
[3]
[4]

4.4.4 Contact sensor

4.4.4.1 Removing the Contact Image Sensor (CIS)

MEMO:
Illustrations of this procedure are figured the document size sensor equipped
model, but procedure is same as document size sensors are not equipped
model.
1) Remove the rear cover.
2) Remove the left cover (rear).
3) Remove the copyboard cover (When the ADF is equipped, open the
ADF).
4) Remove the small cover.
5) Disconnect the ground cable of the ADF harness (Only for the ADF
equipped).
6)Remove the ADF harness (Only for the ADF equipped).
7) Remove ther reader rear cover.
8) Remove the copyboard glass.
F-4-47
[2]
[3]
F-4-48
9) Pull the drive belt (front) [1] in the direction of the arrow to move the con-
tact sensor [2] to the position shown below.
[2]
10) Remove the rear side of the contact sensor [1] from the carriage.
11) Disconnect the flexible cable [2], and then remove the contact sensor [1].
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When removing or installing the contact sensor unit, take care not to touch
the light guide and rod lens array.

4.4.4.2 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.
[1]
F-4-49
[2]
F-4-50
Light guide
Rod lens array
F-4-51
Chapter 4
[2]
[1]
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