Electrical Components; 1When Replacing The Reader Controller Pcb - Canon iR C6800 Series Service Handbook

2.6 Electrical Components

2.6.1 When Replacing the
Reader Controller PCB
- 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
mode:
a. standard white plate white level data
COPIER>ADJUST>CCD>W-PLT-X,Y,Z
820686679349
W-PLT-X
W-PLT-Y
F-2-57
0003-9937
W-PLT-Z
b. service label settings (label attached behind reader
unit front cover)
b-1 image read start position adjustment (x direction;
for fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-X
b-2 image read start position adjustment (Y direction;
fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-Y
b-3 shading position adjustment (for fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-S
b-4 feeder mode main scanning position adjustment
COPIER>ADJUST>ADJ-XY>ADJ-Y-DF
b-5 ADF stream reading CCD read position
adjustment
COPIER>ADJUST>ADJ-XY>STRD-POS
b-6 CCD unit-dependent RB/GB sub scanning
direction color displacement correction value
COPIER>ADJUST>CCD>CCDU-RG/GB
b-7 CCD unit-dependent RG/GB sub scanning
direction color displacement value at shipment
COPIER>ADJUST>CCD>FCCDU-RG/GB
b-8 auto gradation adjustment target value
COPIER>ADJUST>PASCAL>OFST-P-Y,M,C,K
2. ADF-Related Adjustments
The machine uses the RAM on its reader
controller to hold ADF-related service data; as such,
you must make the appropriate adjustments for the
ADF whenever you have replaced the reader
controller or initialized the RAM.
1) Enter the settings indicated on the P-PRINT
printout you have previously generated for the
following items:
a. original stop position adjustment
FEEDER>ADJSUT>DOCST
b. original feed speed (magnification) adjustment
FEEDER>ADUST>LA-SPEED
2) Make adjustments using the following items:
Chapter 2
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