
2. Place an A4 or LTR size paper on the ADF and execute the following service mode.
COPIER > FUNCTION > CCD > DF-WLVL2
5. In the following service modes, enter the values shown on the label included with the Scanner Unit.
COPIER > ADJUST > CCD > MTF-xxx
COPIER > ADJUST > CCD > MTF2-xxx
6. In the following service mode, calculate the MTF filter coefficient.
COPIER > FUNCTION > CCD > MTF-CLC
7. From the following menu, execute the auto gradation adjustment.
Settings/Registration > Adjustment > Adjustment/Maintenance > Adjust Image Quality > Auto Adjust Gradation > Full Adjust
8. Write down the following service mode values on the service label for the Reader (on the Front Door of the host
machine).
COPIER > ADJUST > CCD > MTF-xxx
COPIER > ADJUST > CCD > MTF2-xxx
9. In the following service mode, perform the reading start position adjustment as needed.
1. Copyboard reading
COPIER > ADJUST > ADJ-XY > ADJ-X
COPIER > ADJUST > ADJ-XY > ADJ-Y
2. ADF stream reading
COPIER > ADJUST > ADJ-XY > ADJ-S
COPIER > ADJUST > ADJ-XY > ADJ-Y-DF
COPIER > ADJUST > ADJ-XY > ADJY-DF2
After Replacing the Scanner Unit (Back)
■ Works After Replacement
1. Execute the following service mode to adjust the Scanner Unit white level.
COPIER > FUNCTION > CCD > CL-AGC
2. Follow the steps shown below to adjust the ADF white level.
1. Place an A4 or LTR size paper on the Copyboard Glass and execute the following service mode.
COPIER > FUNCTION > CCD > DF-WLVL1
2. Place an A4 or LTR size paper on the ADF and execute the following service mode.
COPIER > FUNCTION > CCD > DF-WLVL2
3. Follow the steps shown below to perform the paper back shading correction.
1. Cleaning the reading side 1
Locations for cleaning: Stream Reading Glass for front side, Stream Reading Glass for back side
Cleaning method: Clean with the light-blue cloth stored in the Reader Assembly.
2. Paper back shading correction 1
Close the ADF, and execute the following service mode.
COPIER > FUNCTION > CCD > BK-SHD1
3. Paper back shading correction 2
Place the White Plate included with the package by aligning it with the jumping platform, close the ADF, and execute
the following service mode.
COPIER > FUNCTION > CCD > BK-SHD2
4. Cleaning the reading side 2
Remove the White Plate and perform the cleaning again.
Locations for cleaning: Stream Reading Glass for front side, Stream Reading Glass for back side
Cleaning method: Clean with the light-blue cloth stored in the Reader Assembly.
5. Paper back shading correction 3
Close the ADF, and execute the following service mode.
COPIER > FUNCTION > CCD > BK-SHD3
4. In the following service modes, enter the values shown on the label included with the Scanner Unit.
COPIER > ADJUST > CCD > MTF3-xxx
5. Adjustment
311
Summary of Contents for imageRUNNER ADVANCE C255 Series
Page 1: ...Revision 2 0 imageRUNNER ADVANCE C355 C255 Series Service Manual ...
Page 17: ...Product Overview 1 Product Lineup 7 Option 8 Features 11 Specifications 14 Parts Name 18 ...
Page 127: ...Periodical Service 3 Periodically Replacement Parts 117 Consumable parts 118 ...
Page 154: ...4 Remove the Screws 5x 5 Remove the Rear Cover 1 4 Parts Replacement and Cleaning 143 ...
Page 257: ...1 Free the Harness 1 Harness Guide A 1x 1 A 4 Parts Replacement and Cleaning 246 ...
Page 376: ...Error Jam Alarm 7 Overview 366 EError Code 369 Jam Code 457 Alarm Code 464 ...
Page 469: ...Host Machine Cassette PS12 PS11 PS01 PS04 PS05 PS14 PS10 PS101 7 Error Jam Alarm 458 ...
Page 490: ...85 0005 For R D A Operation B Cause C Remedy 7 Error Jam Alarm 479 ...
Page 890: ...4 4x TP M3x6 5 3x 6 2x TP M3x6 7 8 9 Installation 879 ...
Page 891: ...9 1x 10 1x 11 2x 12 4x 13 9 Installation 880 ...
Page 903: ...17 9 Installation 892 ...
Page 914: ...5 6 2x Screw w washer M3x14 7 4x TP M3x6 9 Installation 903 ...
Page 923: ...3 2x 4 Short 1x 5 1x NOTE The removed screw will be used in step 7 6 1x 9 Installation 912 ...
Page 930: ...9 10 11 1x 12 13 9 Installation 919 ...
Page 931: ...14 2x 15 16 2x 17 6x 18 4x 9 Installation 920 ...
Page 932: ... Installing the NFC kit C1 1 1x 2 1x 3 TP M3x4 1x 9 Installation 921 ...