Canon MF735C Series Service Manual page 205

5. How to judge whether the operation was successful or failed
Whether the operation was successful or failed is not shown on the UI, so perform the following procedure to judge if
the operation was successful or failed.
• COPIER > ADJUST > CCD > DFTAR-R
• COPIER > ADJUST > CCD > DFTAR-G
• COPIER > ADJUST > CCD > DFTAR-B
• COPIER > ADJUST > CCD > DFTAR-BW
Check the foregoing values, and if all the values remain the same as those you entered, the operation result is judged
to be "failed".
6. In the case of a failure, turn OFF and then ON the power, and execute the following service mode items in sequence.
Place a sheet of A4 or LTR blank paper (paper recommended by Canon) on the Copyboard Glass of the reader and
execute the service mode.
• COPIER > FUNCTION > CCD > DF-WLVL1
Place the same blank paper on the ADF and execute the service mode.
• COPIER > FUNCTION > CCD > DF-WLVL2
7. In the case of the duplex scanning ADF model, check the following:
• COPIER > ADJUST > CCD > DFTBK-R
• COPIER > ADJUST > CCD > DFTBK-G
• COPIER > ADJUST > CCD > DFTBK-B
• COPIER > ADJUST > CCD > DFTBK-BW
If all the values remain the same as those you entered, the operation result is judged to be "failed".
In the case of the 1-PASS ADF 1-sided model, the operation result is judged to be OK even if this value does not change.
8. In the case of a failure, turn OFF and then ON the power, and execute the following service mode items again.
• COPIER > FUNCTION > CCD > DF-WLVL1
• COPIER > FUNCTION > CCD > DF-WLVL2
11. Copyboard geometric adjustment
Enter the values shown on the label that comes with the part in the following service mode items.
Enter the values of ADJ-X, ADJ-Y, and ADJ-X-MG shown on the replacement label in the following service modes.
• COPIER > ADJUST > ADJ-XY > ADJ-X
• COPIER > ADJUST > ADJ-XY > ADJ-Y
• COPIER > ADJUST > ADJ-XY > ADJ-X-MG
Write the entered values on the service label.
12. ADF (front/back) geometric adjustment
1. On an image copied using the ADF, check the non-image width in the X and Y directions and the expansion/contraction
in the X direction. If adjustment is needed, enter the following adjustment values.
• COPIER > ADJUST > ADJ-XY > ADJ-Y-DF
• COPIER > ADJUST > ADJ-XY > ADJY-DF2
• FEEDER > ADJUST > DOCST
• FEEDER > ADJUST > DOCST2
• FEEDER > ADJUST > LA-SPEED
• FEEDER > ADJUST > LA-SPD2
2. If you enter adjustment values, write the final values on the service label.
13. Copyboard color displacement offset adjustment
Enter the values shown on the label that comes with the part in the following service mode items.
100-RG
• COPIER > ADJUST > CCD > 50-RG
• COPIER > ADJUST > CCD > 100-RG
100-GB
• COPIER > ADJUST > CCD > 50-GB
• COPIER > ADJUST > CCD > 100-GB
Write the entered values on the service label.
To reduce the number of label items, the values of 100-xx and 50-xx are the same.
14. ADF (front/back) color displacement offset adjustment
Enter the values shown on the label that comes with the part in the following service mode items.
Enter the value of 100DF-RG shown on the replacement label in the following service modes.
• COPIER > ADJUST > CCD > 50DF-RG
• COPIER > ADJUST > CCD > 100DF-RG
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6. Adjustment