Canon iR C2880 series, Service Manual

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Chapter 14
14-1
14.1 Scanning System
14.1.1 After Replacing the CIS
0014-3109
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Be sure to enter the values indicated on the CIS label attached to the contact
image sensor (CIS) using the following service mode items:
COPIER>ADJUST>CCD>CCDU-RG
(offset value against color displacement caused by CIS)
COPIER>ADJUST>CCD>MTF-MG
(MTF correction value for main scanning direction)
COPIER>ADJUST>CCD>MTF-SG
(MTF correction value for sub scanning direction)
F-14-1
Also, be sure to update the values indicated on the service label attached be-
hind the reader left cover by the values indicated on the CIS label.
Reference:
The machine is not shipped out of the factory with the CIS label attached to
it.
14.1.2 After Replacing the Copyboard Glass
0014-3111
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
A. Enter the value indicated by the bar code found at the upper right on the
copyboard glass (copyboard cover) using the following service mode
items:
COPIER>ADJUST>CCD>W-PLT-X
COPIER>ADJUST>CCD>W-PLT-Y
COPIER>ADJUST>CCD>W-PLT-Z
(standard white plate white level data X, Y, Z)
F-14-2
B. Enter the value indicated by the bar code found at the upper left of the
copyboard glass (copyboard sheet) using the following service mode
item:
COPIER>ADJUST>CCD>BOOK-RG
(offset value against color displacement caused by copyboard glass)
F-14-3
14.1.3 After Replacing the ADF Reading Glass
0014-3113
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Enter the value indicated by the bar code found on the ADF reading glass
using the following service mode item:
COPIER>ADJUST>CCD>DF-RG
(offset value against color displacement caused by stream reading glass)
F-14-4
14.1.4 After Replacing the Reader Controller PCB
0014-3115
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
- Before replacing the reader controller PCB, be sure to generate the latest P-
PRINT printout.
- If you carry out the power ON and the copier returns to the standby
condition after the controller circuit PCB replacement, turn ON/OFF the
power supply once again.
<if you are initializing the RAM of the reader controller without replacing
the PCB>
- Using the SST, upload the reader controller backup data; after initializing
the RAM, download the data, thus eliminating the need for the following
adjustment.
1. Reader Unit-Related Adjustment
1) Using the SST, download the latest system software (R-CON).
2) Make the following selections in service mode:
COPIER>FUNCTION>CLEAR>R-CON; then, press the OK key to
initialize the RAM. Thereafter, turn off and then on the main power.
3) Enter the appropriate values using the following service mode items:
a. standard white plate white level data
COPIER>ADJUST>CCD>W-PLT-X,Y,Z
b. offset value against color displacement for copyboard glass (copyboard
cover)
COPIER>ADJUST>CCD>BOOK-RG
c. offset value against color displacement for copyboard glass (ADF)
COPIER>ADJUST>CCD>DF-RG
- 0 1 2 7 2 7 0
C C D U - R G
M T F - M G
M T F - S G
8 2 0 6 8 6 6 7 9 3 4 9
W- P LT- X
W- P LT- Y
W- P LT- Z
B O O K - R G
- 0 4
D F - R G
0 0 2