Samsung ML-920 Service Manual page 194

SCHEMATIC DIAGRAMS
4-6 HVPS Circuit Diagram(1/2)
5V
R412
R419
2.2K
5.6K
MHV-PWM
3
CON03-#22
U103-B
7407
5V
R520
5.6K
BIAS-PWM
1
CON03-#24
U103-A
7407
24VS
IN
C102
104
Repair Manual
4-22
18V
R401
100
R405
150KF
R403 R404
62KF 33K
Q401
A708-Y
4
D404
R402
1N4148
56KF
R411
2K C407
104 C401
222 R406
MHV 16.2KF
50K
18V
R501
R506
100
86.6KF
Q501
A708-Y
2
R505
27K
R519
2.2K
R503
R504
100KF
C501
86.6KF
104
R502 C502
2K 222 R507
12KF
DEV
50K
U102
KA7818
OUT 18V
GND +
C103 C104
35V 47uF
104
24VS
C402 R407
104 85KF
T401
KAB-006
1 7
3
Q402
+
1 5 6
D526-Y
2 2
C405
-
2KV 680
R408
U101-A
47K
KA324
4
R409
430
D401
C403
R410
1N4148 333
1W 3
24VS
T1167
1
R508
C503
47K
104
Q502
5
D526-Y
2
6
-
7 4
5
+
R509 R510
U101-B
47K 430
KA324
R511
C504
D501 1W 3
333
1N4148
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D403
C404
4KV
3KV 471
C406
3KV 471
D402
4KV
R413
MGR1/2W 12MF
ZD401
1W 150V
T501 D502
R514
4KV
MGR1/2W 50K
7
6 ZD501
C506
100V
3KV 471
C505
R515
2KV 680 MGR1/2W 50K
ZD502
150V
R512
MGR1/2W 12MF
R516
MGR1/2W 50K
R517
MGR1/2W 15MF
R418
MGR1/2W 100KF
MHV
R416
MGR1/2W 30MF
OPC
BLADE
SUPPLY
DEV
Samsung Electronics