Scanning System; After Replacement Of The Cis; After Replacing The Reader Controller Pcb Or Initializing The Ram - Canon iR4570 Series Service Manual

13.2 Scanning System

13.2.1 After Replacement
of the CIS
iR2270 / iR2870 / iR3570 / iR4570
Be sure to enter the value indicated on the CIS label
attached to the contact image sensor (CIS) using the
following service mode item:
COPIER>ADJUST>CCD>MTF-MG
(main scanning direction MTR correction value)
F-13-21
Be sure also to update the value indicated on the
service label found behind the left cover of the reader
unit so that it is identical to the value indicated on the
CIS label.
Reference:
At time of shipment from the factory, no CIS label is
attached.
0007-9838
XX
MTF-MG
13.2.2 After Replacing the
Reader Controller PCB or
Initializing the RAM
iR2270 / iR2870 / iR3570 / iR4570
- Before replacing the reader controller PCB, be
sure to print out the latest P-PRINT page.
<if you are executing RAM initialization for the
reader controller without replacing the PCB>
- Using the SST, upload the backup data of the reader
controller, and download it after initializing the RAM
so that you need not perform the following:
1. Reader Unit-Related Adjustments
1) Using the SST, download the latest system
software (R-CON).
2) Make the following selections in service mode:
COPIER>FUNCTION>LEARN>R-CON.
press the OK key to initialize the RAM; thereafter,
turn off and then on the main power.
3) Enter the following values in service mode:
a. values indicated on the service label (found
behind the left cover of the reader unit)
a-1. CIS read position adjustment (for fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-X
a-2. main scanning direction position adjustment
(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
Chapter 13
0007-9839
Then,
controller PCB
13-7