Canon iR4570 Series Service Manual page 629

(for fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-Y
a-3. shading position adjustment (for fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-S
a-4. main scanning direction MTF
COPIER>ADJUST>CCD>MTF-MG
If a value other than '0' is set before replacement of
the reader
(COPIER>FUNCTION>BODY>CCD-LUT), set a
value other than '0' once again, and make the
following adjustments using the D-10 Chart.
COPIER>FUNCTION>CCD>LUT-ADJ2
2. ADF-Related Adjustments
The machine is designed to retain ADF-related
service data in its reader controller RAM. As such,
if you have replaced the reader controller or
initialized the RAM, you will also have to make
ADF-related adjustments.
1) Enter the following values by referring to the values
indicated on the P-PRINT page you have
previously printed out.
a. main scanning direction position adjustment (for
stream reading)
COPIER>ADJSUT>ADJ-XY>ADJ-Y-DF
b. original stop position adjustment
FEEDER>ADJSUT>DOCST
c. original feed speed (magnification) adjustment
FEEDER>ADUST>LA-SPEED
2) Make adjustments using the following service
mode items:
a. Tray Width Adjustment
FEEDER>FUNCTION>TRY-A4
FEEDER>FUNCTION>TRY-A5R
FEEDER>FUNCTION>TRY-LTR
FEEDER>FUNCTION>TRY-LTRR
b. CIS Read Position Adjustment (for stream
reading)
controller PCB
COPIER>FUNCTION>INSTALL>STRD-
POS
c. White Level Adjustment
COPIER>FUNCTION>CCD>DF-WLVL1
COPIER>FUNCTION>CCD>DF-WLVL2
When you have made all the foregoing adjustments,
put the P-PRINT page [1] in the service book case,
and dispose of the previous printout.
F-13-24
Chapter 13
13-13