Removing The Copyboard Cover Open/Closed Sensor (Front/Rear); Contact Sensor Hp Sensor; Removing The Copyboard Glass - Canon iR3570 Service Manual

Chapter 5
/ iR4570N / iR2230 / / / iR3530 /
Be sure to enter the value indicated on the CIS label attached to the contact
image sensor (CIS) using the following service mode item:
COPIER>ADJUST>CCD>MTF-MG
(main scanning direction MTR correction value)
F-5-65
Be sure also to update the value indicated on the service label found behind
the left cover of the reader unit so that it is identical to the value indicated on
the CIS label.
Reference:
At time of shipment from the factory, no CIS label is attached.
5.4.5 Copyboard Cover Open/Close Sensor
5.4.5.1 Removing the Reader Rear Cover
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
1) Disconnect the ADF communications cable [1] (if equipped with an ADF)
[1]
F-5-66
2) Open the copyboard cover (or the ADF).
3) Remove the 4 screws [1], and detach the reader rear cover [2].
[1]
F-5-67
5-22
XX
MTF-MG
[1]
[2]
5.4.5.2 Removing the Copyboard Cover Open/Closed
Sensor (front/rear)
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
1) Disconnect the 2 connectors [1], and remove the screw [2]; then, detach
the sensor base [3].
F-5-68
2) Detach the 2 sensors [1] from the sensor base.
0007-3437
F-5-69

5.4.6 Contact Sensor HP Sensor

5.4.6.1 Removing the Copyboard Glass

iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
1) Open the copyboard cover (or ADF).
2) Remove the 2 screws [1], and detach the glass retainer [2]; then, detach
the copyboard glass [3].
F-5-70
When removing the copyboard glass, take care not to touch the following:
- glass surface
- standard white plate
The presence of dirt can cause white/black lines in the images. If dirt is
found, clean it with lint-free paper moistened with alcohol.
0007-0753
0007-3439