Laser Exposure System; After Replacing The Laser Scanner Unit; Image Formation System; After Replacing The Secondary Transfer Roller - Canon iR C3380 series Service Manual

Chapter 14
D F - R G
W- P LT- X
W- P LT- Y
d. service label (behind reader unit left cover) values
d-1. CIS read position adjustment (fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-X
d-2. main scanning direction position adjustment (fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-Y
d-3. shading position adjustment (fixed reading)
COPIER>ADJUST>ADJ-XY>ADJ-S
d-4. sub scanning direction color displacement correction
COPIER>ADJUST>CCD>CCDU-RG
d-5. main/sub scanning direction MTF value
COPIER>ADJUST>CCD>MTF-MG,SG
d-6. auto gradation correction target value
COPIER>ADJUST>PASCAL>OFST-P-Y,M,C,K
If the value of the following was not 0 before the replacement of the
reader controller PCB: 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)
COPIER>FUNCTION>INSTALL>STRD-POS
c. white level adjustment
COPIER>FUNCTION>CCD>DF-WLVL1
COPIER>FUNCTION>CCD>DF-WLVL2
When you have finished the foregoing adjustments, put the P-PRINT print-
out [1] you have previously generated in the service book cassette to replace
the old P-PRINT printout.
14-2
B O O K - R G
W- P LT- Z
F-14-5

14.2 Laser Exposure System

14.2.1 After Replacing the Laser Scanner Unit

/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
When replacing the laser scanner unit, register the values described on the
label which is included in the package in the service modes below. After reg-
istration, attach the label onto the front cover.
COPIER > FUNCTION > LASER > FSLUT-Y1 to 8
COPIER > FUNCTION > LASER > FSLUT-M1 to 8
COPIER > FUNCTION > LASER > FSLUT-C1 to 8
COPIER > FUNCTION > LASER > FSLUT-K1 to 8
Registration of the main scanner reproduction ratio correction value

14.3 Image Formation System

14.3.1 After Replacing the Secondary Transfer Roller

/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Upon replacement to the new secondary transfer outer roller, attachment of
the rubber component of the secondary transfer roller onto the ITB belt caus-
es a white spot image.
In order to prevent this, at replacing the secondary transfer outer roller to the
new one, coating of toner onto the surface of the roller is required.
When replacing the secondary transfer outer roller, execute the service mode
below:
- COPIER > FUNCTION > TNR-COAT
Coating of the Y toner onto the secondary transfer roller
In case the white spot image occurred after replacing the secondary transfer
roller, clean the ITB unit.
Initial settings / registration > adjustment / cleaning > cleaning within the
main body

14.4 Fixing System

14.4.1 Confirming of the nip width

/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Executed the following item of the service mode, and measure the nip width.
COPIER>FUNCTION>FIXING>NIP-CHK
*:The sheet stops temporarily at the fixing unit and it is delivered.
Standard of the nip width
Center part: 8mm or more
Difference of right and left edge: 1mm or less

14.5 Electrical Components

14.5.1 After Replacing the Reader Controller PCB

/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
- Before replacing the reader controller PCB, be sure to generate the latest P-
PRINT printout.
- If you carry out the power ON and the copier returns to the standby
condition after the controller circuit PCB replacement, turn ON/OFF the
power supply once again.
F-14-6
0014-3098
0014-3128
0014-3631
0014-3118