Canon CLC 1120 Service Handbook page 17

Adjusting Transfer
[D]
Check the locked condition of the
transfer blade in service mode.
NO
Is a transfer fault noted?
YES
NO
Are there white spots
(transfer fault)?
YES
NO
Is the fault limited to
Check the transfer blade.
a specific color?
YES
YES
Are there white spots in
Check the transfer blade.
vertical direction?
NO
Are there vertical
YES
Check the output of the separation
lines corresponding to
charging assembly.
separation claws?
NO
Make several
test prints. Does the
NO
Check the internal/external static
copy density decrease
eliminator.
(become light)?
YES
Adjusting the Original Exposure System/Color Balance
[C]
Check the positions of the copyboard glass,
standard white plate, original scanning lamp,
reflecting plate, and mirrors, and clean them.
Check to see if the No. 1 mirror/No. 2 mirror
base is not riding over the rail.
Check to find out if the value of
ADJUST>COLOR in service mode is
identical with the value recorded on the label.
Check the contact between the CCD and the
CCD driver PCB.
Set OPTION>BODY>PASCAL in service
mode to '1'.
Execute ADJUST>CCD>CCD-ADJ in service
mode.
YES
Is the image better?
NO
Execute auto gradation correction
in user mode.
Make a copy of the CA1 Test Sheet.
Make adjustments in ADJUST>COLOR>ADJ-Y,
Is the gray scale
NO ADJ-M, ADJ-C, ADJ-K in service mode.
(especially light area)
To make copies darker, increase the setting.
of the copy good?
To make copies lighter, decrease the setting.
YES
End.
End.
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