Scanning System; Procedure After Replacing The Cis; Image Formation System; Procedure After Replacing The Developing Assembly - Canon iR2020 Series Service Manual

11.1 Scanning System

11.1.1 Procedure after Replacing the CIS

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
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 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.

11.2 Image Formation System

11.2.1 Procedure after Replacing the Developing
Assembly
iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i
<Going through the Developer Idling Mode>
After replacing the developing assembly, go through the following steps
in the developing assembly idle rotation mode before installing the toner car-
tridge.
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
following keys to enter the service mode:
Additional Functions key > 2 key > 8 key > Additional Functions key
5) Select "#PRINT" using the + or - key, and then press the OK key.
6) Select "#PRINT SW" using the + or - key, and hen press the OK key.
Confirm that the following message is displayed:
Message: #PRINT SW 001 00000000
7) Press the following keys and confirm the message:
# key > 1 key > 1 key
Message: #PRINT SW 011 00000000
8) Position the cursor to Bit-1 (second from right) using the + or - key, and
press the 1 key, and then confirm the following message:
Message: #PRINT SW 011 00000010
9) Press the OK key. Confirm that "SW 011" changes to "SW 012".
Message: #PRINT SW 012 00000000
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
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.
Press the User Mode key " ", 2 key, 8 key, 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.
0011-2391
", 2 key, 8 key, and User Mode
0011-2545
0011-2555
", 2 key, 8 key, and User Mode
" on the
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.
Chapter 11
11-1