Removing The Image Processor Pcb; Procedure After Replacing The Image Processor Pcb; Sdram; Removing The Rear Cover - Canon iR2020 Series Service Manual

6) Remove the 10 screws [1], and then detach the IP cover [2].
[1]
[2]

3.5.1.8 Removing the image processor PCB

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
1) Remove six connectors [1].
2) Remove the five screws [1], and detach the image processor PCB [2].
[2]
[1]
F-3-28
[1]
[1]
F-3-29
[1] [1]
F-3-30
3.5.1.9 Procedure after Replacing the Image Processor
PCB
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
After replacing the image processor PCB with a new one, 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 User Mode key "
key " " on the operation panel.
2) Using the arrow keys on the operation panel, display "TEST MODE".
3) Press the OK key.
4) Press the 2 key. "SCAN TEST" appears.
5) Press the 1 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.
0010-8719
Press the User Mode key "
operation panel of the host machine.
2) Using the arrow keys on the operation panel, display "TEST MODE".
3) Press the OK key.
4) Press the 2 key. "SCAN TEST" appears.
5) Press the 3 key. "SHEET POS ADJ" appears.
The optical system starts scanning. Several seconds later, automatic adjust-
ment of the reading position finishes and "OK" appears.
If automatic adjustment fails, "NG" appears. Perform the following pro-
cedure:
Clean the white roller of the DADF and the document glass of the host ma-
chine, and then retry auto adjustment.

3.5.2 SDRAM

3.5.2.1 Removing the Rear Cover

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
1) Remove the four screws [1], and then detach the rear cover [2].

3.5.2.2 Removing the RAM Cover

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
Chapter 3
[1]
[2]
[1]
F-3-31
", 2 key, 8 key, and User Mode
", 2 key, 8 key, User Mode key "
[1]
[2]
[1]
F-3-32
0011-3396
" on the
0010-8704
0010-8705
3-11