Composite Power Supply Circuit Diagram - Canon NP6621 Service Manual

4
C7
1
C8 C9
F1
F2
F3
1
WHITE
W4
1
W15
2
W1
3
BLACK
K1
COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
+BATT
D2 D3
L1
3
R3
+ +
C2
RV1 C4
C3
HOT R5
2
D4 D5
R11 R12
5
4
3
2
2 1
1
Q5
J1
R14
2
W3
1
W2 C135
2
R15
C14
HOT
+
3
W5 D77
2
W6
1
D9 L2
VCC-PRIN
COLD-LINE
HOT-LINE D11
C20
24V
4 -BATT
5
D12
R22
Q7
HEAT-PROT
R23
-BATT
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E. COMPOSITE POWER SUPPLY CIRCUIT DIAGRAM
R1 D84
VCC-PRIN
-BATT
Q1
R2
C1
R4
+
D1
C5 C6
Q2
R8
D85
R7
D7 R9
C12
R10
-BATT
VFEEBBK
C13
R207
+
C136
C141
D90
R17 R224
D86
VAUX
Q6 D10
D87
+
R220
+
C19
D88
R21 R20
Q51
Q52
D89
R222
ZD11
Q53
R221
+
OVERC
C140 R223
Q54
R46
1/6
Composite Power Supply PCB (1/6)
6
+30VSEC
7
15 8
+24VSEC
11
18 9
17
T1
9
8
2 5
C11
4 1
T2
U1 VAUX
1 8
COMP VREF
2 7
VI
VFS
3 6
IS OUT
4 5
OSC GNS
D6
C10
R19
C16 C18
C15 C17
D8
VREF-U1
OSC-U1
A–21