When Replacing The Copyboard Glass - Canon imageRUNNER 1750 Series Service Manual

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Disassembly/Assembly > Original Exposure/Feed System > Removing the Copyboard Glass > When Replacing the Copyboard Glass

■ When Replacing the Copyboard Glass

Execute the following in the service mode.
CAUTION:
Be sure to execute the White Plate data adjustment before the DF while level
adjustment.
W-PLT-X
W-PLT-Y
1. Enter the value (see the figure above) indicated on the Copyboard Glass in the following
service mode.
SCAN > READER > ADJUST > CCD > W-PLT-X/Y/Z (entering the standard White Plate
data)
2. Follow the following steps to execute the service mode.
SCAN > READER > FUNCTION > CCD > DF-WLVL1/2/3/4 (adjusting the DF white level)
1) Place a sheet of paper which is normally used by the user on the Copyboard Glass, and
execute the following: service mode > SCAN > READER > FUNCTION > CCD > DF-
WLVL1.
The white level during BOOK mode is read (checking the transmission of the glass for
BOOK mode).
2) Place a sheet of paper which is normally used by the user on the ADF, and execute the
following: service mode > SCAN > READER > FUNCTION > CCD > DF-WLVL2.
The white level during DF mode (stream reading) is read (checking the transmission of the
glass for stream reading) (reading both sides of the chart).
3) Place a sheet of paper which is normally used by the user on the Copyboard Glass, and
execute the following: service mode > SCAN > READER > FUNCTION > CCD > DF-
WLVL3.
The white level during BOOK mode is read (checking the transmission of the glass for
BOOK mode).
4) Place a sheet of paper which is normally used by the user on the ADF, and execute the
following: service mode > SCAN > READER > FUNCTION > CCD > DF-WLVL4.
The white level during DF mode (stream reading) is read (checking the transmission of the
glass for stream reading) (reading both sides of the chart).
4 Disassembly/Assembly > Original Exposure/Feed System > Removing the Copyboard Glass > When Replacing the Copyboard Glass
W-PLT-Z
F-4-64
NOTE:
Be sure that size of a paper to be used in the foregoing steps is the one that the ADF
can be read.
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