Canon imageRUNNER 2525 Series, Service Manual, Page: 157 / 402

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.)
Removing the ADF Scan Glass
1. Open the platen cover (platen board cover/ADF).
2. Remove the glass retainer.
• 2 screws
3. Remove the ADF scan glass.
2x
CAUTION:
• When removing the ADF scan glass, take care not
to touch the glass surface with your fingers.
• Soils on the glass surface may cause white/black
lines on images.
• If the glass surface is soiled, clean them with a lint-
free paper moistened with alcohol.
• Be sure to install the ADF scan glass with its seat
facing front left.
4. Disassembly/Assembly
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