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COPYRIGHT
©
2000 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
4 Checking the Scanner Side
Are there
vertical lines in the
image?
Clean the following:
[1] each mirror
[2] lens
[3] standard white plate
[4] copyboard glass
Clean the following:
[1] each mirror
[2] lens
[3] standard white plate
[4] dust-proofing glass
[5] scanning lamp
[6] reflecting plate
Execute the following in service mode:
COPIER>FUNCTION>CCD>CCD-ADJ
Execute the following in service mode:
COPIER>FUNCTION>CCD>CCD-ADJ
Execute
COPIER>FUNCTION>CCD>CCD-ADJ
in service mode.
Copy
the NA3 Chart in
text mode. Is the density
of gray scale No. 1 (solid
black) too low
(light)?
Turn off and then on the power
switch, and make one copy.
Check the life of the
scanning lamp. If it has
reached the end of its
life, replace it.
Check to see if the
standard white plate is
mounted correctly.
If it is not firmly in
contact, correct it.
<Making Image Initial Checks> <Checking the Density Slope>
<Checking Solid Black Density>
<Checking Halftone Density>
<Checking Fogging>
YES
YES
NO
NO
NO
YES
NO
NO
YES
YES
NO
NO
Increase the setting of the
following in service mode:
COPIER>ADJUST>DENS
>DENS-ADJ
End.
YES
YES
NO
NO
Make one copy of
the A3 Chart in
text/photo mode.
YES
Go to "Checking the Density
Slope" for the printer side.
Go to "Checking the Solid Black
Density" for the printer side.
YES
Go to "Checking the Halftone Density" for the printer side.
Is there
a difference in
density between
front and
rear?
Executing Potential
Control
Is gray scale
No. 1
(solid black) too
low (light)?
Copy the
NA3 Chart in
text mode. Is the
background
foggy?
Is the background foggy?
Execute the following in service mode:
COPIER>FUNCTION>CCD>CCD-ADJ
Increase the setting of the following
in service mode:
COPIER>ADJUST>CCD>SH-TRGT.
(Be sure to limit it to 40 max.)
Is the
density of gray scale
No. 8 (halftone)
different?
If it is too dark,
If it is too light,
Go to "Checking
Fogging" for the
printer side.
YES
NO
NO
YES
Copy the
NA3 Chart in AE mode. Is the
background
foggy?
Is the
background foggy?
Execute the following in service mode:
COPIER>FUNCTION>CCD>CCD-ADJ
Decrease the setting of the
following in service mode:
COPIER>ADJUST>AE>AE-TBL
When
the A3 Chart
is copied in text/photo
mode, is the density of No. 8 optimum
when compared with Nos. 7
through 9?
B
B
Decrease the setting of the
following in service mode:
COPIER>ADJUST>DENS
>DENS-ADJ
Is there
a difference in density
between front and
rear?
13-4-3