Removing The Ccd Unit - Canon H1 Service Manual

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Parts Replacement and Cleaning Procedure > Original Exposure System (Reader) > Removing the CCD Unit
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.
<Processing after replacing the parts>
1. Enter the service mode, and then select the following:
(Lv.1) COPIER> 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 following
servicemode.
(Lv.1) COPIER> FUNCTION> CCD> DF-WLVL1
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 following
servicemode.
(Lv.1) COPIER> FUNCTION> CCD> DF-WLVL2
4 Parts Replacement and Cleaning Procedure > Original Exposure System (Reader) > Removing the CCD Unit
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 following
servicemode.
(Lv.1) COPIER> FUNCTION> CCD> DF-WLVL3
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 following
servicemode.
(Lv.1) COPIER> 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 CCD Unit

<Preparation>
1) Backup of the Service Mode data
(Lv.2) COPIER> FUNCTION> SYSTEM> RSRAMBUP
<Procedure>
1) Open the platen cover (ADF/platen board cover).
2) Remove the reader right cover.
3) Remove the right glass retainer.
4) Remove the platen glass.
F-4-11
5) Move the belt in the direction of the arrow and move the CCD unit to the position of the
groove in the frame.
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F-4-12
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