Canon imageRUNNER 2520, Руководство по обслуживанию, Страница: 147 / 336

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Parts Replacement and Cleaning > Main Units/Parts > Removing the ADF Scan Glass
Parts Replacement and Cleaning > Main Units/Parts > Removing the ADF Scan Glass
Removing the Platen Glass
1) Open the platen cover (platen board cover/ADF).
2) Remove the glass retainer.(
"Removing the Platen Glass"(page 4-19). )
2 screws
x2
CAUTION:
When removing the platen glass, take care not to touch the following
parts with your fingers:
Glass surface
Standard white plate
•
•
Soils on these parts may cause white/black lines on images.
If they are soiled, clean them with a lint-free paper moistened with alcohol.
•
F-4-64 F-4-64
F-4-65 F-4-65
Action to Take after Replacing the Platen Glass
Take the action stated below in the service mode.
CAUTION:
Be sure to make the white plate data adjustment before ADF white level adjustment.
W-PLT-X
W-PLT-Y
W-PLT-Z
F-4-66 F-4-66
1.Enter the value indicated on the platen glass in the following service mode:
SCAN > READER > ADJUST > CCD > W-PLT-X/Y/Z (Input of standard white plate data)
2.Enter the service mode, and then select the following:
SCAN > READER > FUNCTION > CCD > DF-WLVL1/2/3/4 (DF white level adjustment)
1) Place a sheet of paper that the user usually uses on the platen glass, enter the
service mode, and then select SCAN > READER > FUNCTION > CCD > DFWLVL1.
Read the white level in the BOOK mode. (Check the transparency of the glass for
BOOK mode.)
2) Place a sheet of paper that the user usually uses on the DF, enter the service mode,
and then select SCAN > READER > FUNCTION > CCD > DF-WLVL2.
Read the white level in the DF mode (stream reading). (Check the transparency of
the glass for stream reading.)(Read both sides of the chart.)
3) Place a sheet of paper that the user usually uses on the platen glass, enter the
service mode, and then select SCAN > READER > FUNCTION > CCD > DFWLVL3.
Read the white level in the BOOK mode. (Check the transparency of the glass for
BOOK mode.)
4) Place a sheet of paper that the user usually uses on the DF, enter the service mode,
and then select SCAN > READER > FUNCTION > CCD > DF-WLVL4.
Read the white level in the DF mode (stream reading). (Check the transparency of
the glass for stream reading.)(Read both sides of the chart.)
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