Scanning System; 1After Replacing The Ccd Unit; 2After Replacing The Copyboard Glass; 3After Replacing The Reader Controller Pcb Or Initializing The Ram - Canon iR C6800 Series Service Handbook

2.2 Scanning System

2.2.1 After Replacing the
CCD Unit
If you have replaced the CCD unit, be sure to enter the
settings indicated on the label attached to the CCD
unit:
COPIER>ADJUST>CCD>CCDU-RG
(to enter the correction value for CCD-dependent RG
color displacement in sub scanning direction)
COPIER>ADJUST>CCD>CCDU-GB
(to enter the correction value for CCD-dependent GB
color displacement in sub scanning direction)
+2,-1,30524101
CCDU-RG
F-2-18
Moreover, be sure to update the settings indicated on
the service label attached behind the reader unit front
cover with the settings indicated on the label attached
to the CCD unit.
2.2.2 After Replacing the
Copyboard Glass
If you have replaced the copyboard glass, be sure to
enter the bar code value indicated in the upper
right of the copyboard glass using the following
service mode items:
COPIER>ADJUST>CCD>W-PLT-X
0003-9936
CCDU-GB
0003-8724
COPIER>ADJUST>CCD>W-PLT-Y
COPIER>ADJUST>CCD>W-PLT-Z
(to enter the standard white plate white level data X,
Y, Z)
820686679349
W-PLT-X
W-PLT-Y
F-2-19
2.2.3 After Replacing the
Reader Controller PCB or
Initializing the RAM
- Be sure to generate the latest P-PRINT printout
before replacing the reader controller PCB.
<if you are initializing the RAM of the reader
controller without replacing the PCB>
- Using the SST, upload the backup data of the reader
controller; then, after initializing the RAM, download
the data to eliminate the need for the following
adjustments:
1. Reader Unit-Related Adjustments
1) Using the SST, download the latest version of the
system software (R-CON).
2) Make the following selections in service mode, and
press the OK key to initialize the RAM:
C O P I E R > F U N C T I O N > C L E A R > R - C O N .
Thereafter, turn off and then on the main power.
3) Enter the settings for the following items in service
Chapter 2
W-PLT-Z
0003-8726
2-35