Canon iR3570 Series, Service Manual

Page: 516 / 722

Chapter 13
13-4
F-13-19
13.2 Scanning System
13.2.1 After Replacement of the CIS
0007-9838
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
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-13-20
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.
13.2.2 After Replacing the Reader Controller PCB or
Initializing the RAM
0007-9839
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
- Before replacing the reader controller PCB, be sure to print out the lat-
est 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 down-
load 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>FUNC-
TION>LEARN>R-CON. Then, 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
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)
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-13-21
13.3 Laser Exposure System
13.3.1 After Replacing the Laser Scanner Unit
0007-5178
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
Enter the values recorded on the label on the laser scanner unit for the fol-
lowing in service mode:
- COPIER>ADJUST>LASER>LA-DELAY
13.4 Image Formation System
13.4.1 After Replacing the Developing Unit
0007-5179
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530 /
1) Execute the following service mode items:
- COPIER > FUNCTION > INSTALL > STIR-K
2) Initialize the following service mode items:
- COPIER > COUNTER > DRBL-1 > DVG-CYL
A test copy that is made right after the toner has been stirred can be
soiled on its back with a small amount of stray toner. The symptom will
likely disappear when 3 or so copies are made.
13.4.2 After Replacing the Drum Unit (APVC correction)
0007-5181
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N /
/ iR4570N / iR2230 / / / iR3530
[1] [3] [2]
X X
M T F - M G