Canon Plain Paper Copier Manuel D’Utilisation
A–33
APPENDIX
COPYRIGHT © 1998 CANON INC.
CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
I.
TONER LEVEL DETECTION CIRCUIT DIAGRAM
R769
D762
2
3
8
4
-
+
+24V
1
2
J752
J752
ADJ-
ADJ+
1
2
3
1
2
3
1
GNDB
TNEMP
24VB
SENSOR
GNDB
GNDB
BIAS
J754
J754
J754
J751
J751
J751
2
1
Q762
3
+24V
R760
C757
R761
VR762
1
2
R762
+24V
1
R759
Q753
6
5
8
4
-
+
7
Q753
C756
+
C755
C763
R766
R767
R764
J753
R765
+24V
2
1
Q761
3
D763
R771
D761
3
D752
2
1
Q752
3
R752
C753
R756
R757
R754
R755
+24V
2
1
Q751
3
D753
R751
D751
C750
C751
+
+
+24V
+24V