Canon 1000S, Service Manual

Page: 492 / 840

7-56
COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
C. Test Prints
The CLC1000 possesses nine types of test
print patterns, enabling identification of an error in
reference to each test print pattern.
If a fault on a copy made normally does not ap-
pear on a test print, you may suspect the original
exposure system, CCD, analog processor, or im-
age processor.
1. Selecting a Test Pattern
1) Set the copy count and paper size.
2) Start service mode. (
→
,
→
)
3) Press ‘TEST’ .
4) Select ‘PG
→
TYPE’ .
5) Enter the appropriate PG number using the
keypad.
6) Set the color mode.
• ‘COLOR-Y/M/C/K=1’ selects a color.
*Effective when ‘PGTYPE=2, 3, 4, 5, or 6.
7) Set the density of the test print*.
• Set the density using the ‘DENS-Y/M/C/K’
key.
*Effective when ‘PGTYPE=5’ .
8) Press the Start key.
Be sure to return the setting of
‘PGTYPE’ to ‘0’ when you have fin-
ished checks using test prints.
Table 7-301
Description
Image from CCD (regular copying)
For R&D
256 colors
256 gradations
17 gradations
Total halftone page
Grid
For image position correction
For R&D
For R&D
MCYBk horizontal stripe (laser FF
activation)
For R&D
For R&D
For R&D
Full color in 17 gradations
Not used
Not used
For R&D
For R&D
For R&D
For R&D
For R&D
For R&D
PGTYPE
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22