CHAPTER 13 TROUBLESHOOTING
13-178
COPYRIGHT © 1999 CANON INC. CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Caution:
If the copier is used in highlands (low atmospheric pressure), images may suffer from transfer
faults. Try changing the setting of the DIP switch (SW1) to highland 1, and see if the problem
is corrected; if the problem still occurs, switch SW1 to highland 2.
If the problem still remains thereafter, shift SW1 back to its normal setting, and try to check
other possible causes.
2. CPU PCB
Figure 13-615
LED1: turns on when +5 V is supplied.
LED2: turns on when +24 V is supplied.
3. IP main PCB
VR1
LED1
LED2
J2001
J2002
J2003
J2004
1
4
B2
B1
B14
B15
A34
A33
A2
A1
B34
B33
B2
B1
A34
A33
A2
A1
B34
B33
B2
B1
A2
A1
A50
A49
B1
B2
B49
B50
A1
A2
A29
A30
B1
B2
B29
B30
A1
A2
A49
A50
B1
B2
B49
B50
A1
A2
A9
A10
B10
B9
B1
B2
A34
A33
A2
A1
B34
B33
B2
B1
A34
A33
A2
A1
B34
B33
B2
B1
A2
A1
A9
A8
B9
B8
B2
B1
A1
A2
A33
A34
B1
B2
B33
B34
A1
A2
A33
A34
B1
B2
B33
B34
A14
A15
A2
A1
B2
B1
B8
B9
A8
A9
A2
A1
B1
B2
B9
B10
A10
A9
A2
A1
B1
B2
B19
B20
A20
A19
A2
A1
B2
B1
B16
B17
A16
A17
A2
A1
J2005
J2006
J2051
J2052
1
1
1
5 1
4 1
6
3
2
9
8
J2007
J21
J20
J24
J25
J2010
J2009
J9
J6
J2
1
J1
A1
A15
A15
A1
J30
J23
J22
J2011
J2012
2
8
1
7
J2053
J2012
1
9
J214
J215
J216
J217
52
51
100
99
50
49
B1
B2
A1
A2
B1
B2
A1
A2
B49
B50
A49
A50
B39
B40
A39
A40
2
1
2
1
32
1
J211
32
1
J212
J213
32
1
14
15
J218
2
1
14
15
Figure 13-616
Summary of Contents for CLC 1120
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