Contact Sensor; Removing The Contact Image Sensor; Procedure After Replacing The Cs; Contact Sensor Hp Sensor - Canon iR1020 Series Service Manual

Chapter 4
When reinstalling the reader motor, attach the spring [1] with the three
screws [2] fastened temporarily, tighten the circled screw [2] tightly, and fi-
nally tighten the remaining two screws [2] tightly.

4.4.4 Contact sensor

4.4.4.1 Removing the Contact Image Sensor

iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F /
iR1024i / iR1024iF
1) Remove the ADF or copyboard.
2) Remove the copyboard glass and reader rear cover.
3) Remove the four screws [1], and then remove the ADF base (left) [2].
[1]
4) Holding the belt, move the contact sensor unit to the cutout [1] in the read-
er frame.
5) Remove the cable holder [2] and flexible cable [3] to remove the contact
iamge sensor [4].
[1]
[3] [2]

4.4.4.2 Procedure after Replacing the CS

iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F /
iR1024i / iR1024iF
After replacing the contact sensor (CS), go through the following steps to
perform inter-channel output correction:
1) Enter the service mode.
Sequentially press the Additional functions key, 2 key, 8 key, and Addi-
tional functions key on the operation panel.
2) Press the arrow key on the touch panel to display "TEST MODE".
3) Press [OK].
4) Press the [2] key to display "SCAN TEST".
5) Press the [1] key to display "SHADING".
6) Press [OK].
After completion of the above procedure, the contact sensor output is com-
pensated and parameters are set automatically.
After completion of automatic adjustment, "OK" is displayed.
4-8
[2] [1]
F-4-14
[4]
F-4-15

4.4.5 Contact Sensor HP Sensor

4.4.5.1 Removing the Contact Sensor Home Position
Sensor
iR1020J / iR1024J / iR1020 / iR1024 / iR1024A / iR1024N / iR1024F /
iR1024i / iR1024iF
1) Remove the copyboard glass.
2) Remove the two screws [1] and remove the glass retainer [2].
3) Remove the reading glass [3].
0013-1213
4) Taking care not to break the hook, remove the home position sensor [1]
with a flathead screwdriver. Next, disconnect the connector [2]. If the
contact sensor unit is over the reader home position sensor, move the con-
tact sensor unit to an appropriate position by holding the belt [3].
0013-1214
[3]
[1]
[2]
[1]
F-4-16
[2]
[3]
F-4-17
0013-1215
[1]