After Replacing The Reader Controller Pcb Or After Initializing The Ram - Canon iR4570 Series Service Manual

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F-5-47
5.4.2.7 After Replacing the
Reader Controller PCB or
After Initializing the RAM
iR2270 / iR2870 / iR3570 / iR4570 / iR3530
- Before replacing the reader controller PCB, be sure
to generate the latest P-PRINT printout.
<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;
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. service label (behind reader unit left cover)
values
a-1. CIS read position adjustment (fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-X
a-2. main scanning direction position adjustment
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then,
(fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-Y
a-3. shading position adjustment (fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-S
a-4. main/sub scanning direction MTF value
COPIER>ADJUST>CCD>MTF-MG
If the value of the following was not 0 before the
replacement of the
COPIER>OPTION>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 Adjustment
The machine keeps ADF-related service mode data in
the RAM of the reader controller; as such, you will
have to make the appropriate adjustments if you
have replaced the reader controller or initialized the
RAM.
1) Enter the values indicated in the P-PRINT printout
you have previously generated for the following:
a. main scanning direction position adjustment
(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 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 (stream reading)
Chapter 5
reader controller PCB:
5-31