Scanning System; After Replacing The Reader Controller Pcb; When Replacing The Ccd Unit - Canon iR6570 series Service Manual

13.3 Scanning System

13.3.1 After 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 on the reader controller without
replacing the PCB,
Using the SST, upload the backup data of R-CON; initialize the RAM,
and then download the data, thus eliminating the need for the
following.
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 execute
RAM initialization. Thereafter, turn off and then back on the main
power.
3) Enter the appropriate settings for the following items in service mode:
a. settings indicated on the service label (found behind the reader unit
front cover)
a-1 image read start position adjustment (X direction; in fixed reading
mode) COPIER>ADJUST>ADJ-XY>ADJ-X
a-2 image read start position adjustment (Y direction; in fixed reading
mode) COPIER>ADJUST>ADJ-XY>ADJ-Y
a-3 shading position adjustment (in fixed reading mode)
COPIER>ADJUST>ADJ-XY>ADJ-S
a-4 feeder mode main scanning position adjustment
COPIER>ADJUST>ADJ-XY>ADJ-Y-DF
a-5 ADF stream reading CCD reading position
COPIER>ADJUST>ADJ-XY>STRD-POS
The machine retains ADF-related service data in the RAM of its reader
controller,
thus necessitating ADF adjustment whenever you have replaced the
reader controller or initialized the RAM.
b. original stop position adjustment
FEEDER>ADJSUT>DOCST
c. original feed speed (magnification) adjustment
FEEDER>ADUST>LA-SPEED
4) Make adjustments using the following service mode items:
a. ADF sensor sensitivity adjustment
FEEDER>FUNCTION>SENS-INT
b. tray width adjustment
FEEDER>FUNCTION>TRY-A4
FEEDER>FUNCTION>TRY-A5R
FEEDER>FUNCTION>TRY-LTR
FEEDER>FUNCTION>TRY-LTRR
c. white plate data adjustment
COPIER>FUNCTION>CCD>CCD-ADJ
d. ADF white level adjustment
COPIER>FUNCTION>CCD>DF-WLVL1
COPIER>FUNCTION>CCD>DF-WLVL2
Be sure to perform white plate data adjustment before performing ADF
white level adjustment.
After having made the foregoing adjustments, put the P-PRINT printout
in the service book case, replacing the previous P-PRINT printout.

13.3.2 When Replacing the CCD Unit

Execute the following in service mode:
1) white plate data adjustment (COPIER> FUNCTION> CCD> CCD-
ADJ)
2) ADF white level adjustment (COPIER> FUNCTION> CCD> DF-
WLVL1/2)
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Be sure to perform white plate data adjustment before performing ADF
white level plate.
13.3.3 Adjusting the Position of the No. 1/No. 2
Mirror Base
1) Arrange the mirror positioning tool (FY9-3009-040) so that it is ready
for use in the machine (by changing the pin position; REAR).
2) Arrange the mirror positioning tool so that it is ready for use in the
machine (by changing the pin position; FRONT).
3) Fit the pins of the mirror positioning tool (front [2]; rear [3]) into the
appropriate holes of the No. 1/No. 2 mirror base).
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