Canon FY8-13FW-000DADF-A1 Service Manual page 134

IV. VARIABLE
RESISTORS, LIGHT-
EMITTING DIODES, AND
CHECK PINS BY PCB
Of all variable resistors (VR), light-
emitting diodes, and check pins, those needed
when servicing the machine in the field are
discussed.
Caution:
Do not touch the variable resistors and
check pins not discussed herein. They are
for the factory, and require special tools
and must be adjusted to high accuracy.
COPYRIGHT © 1998 CANON INC. CANON DADF-A1 REV.0 DEC. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 5 TROUBLESHOOTING
A. DADF Controller PCB
Caution:
1. Some LEDs emit dim light even when
off because of leakage current. This is a
normal condition, and must be kept in
mind:
2. VRs that may be used in the field
VRs that must not be used in the field
1 2
1 4
1 2
J15
CB1
J2 J3
7
J1
1
8
J10
1
DSW1
SW1
SW3
6 1
SW2
TP1
Figure 5-401
1 10
1 9
J5
13 14
J8
J14
1 2
1
J13
2
1
J6
3
1
J7
2
J11
1
B12 B1
3
2 1
A1 J9 A12 J12
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