Service manual

60
ViewSonic Corporation Confidential - Do Not Copy VA503b-2_VA503m-2
Model
Title
Date Rev:
ViewSonic Corporation
INVERTER
+14V
BRIGHTNESS3
ON/OFF3
OP
OP
C518
0.01/50V
R507
3M3 1%
T501
SPW-066
1
3
4
6
8
7
R501
10K 1%
R505
33
R523
470
R509
NC
+
C501
220u/25V
C507
2.2u/25V
R504
33
R520
3K9 1%
R512
33K 1%
R510
3K9 1%
R525
10
C510 1000p/50V
ZD501
5V6
C504
1000p/50V
C508
NC
C514
NC
R518
1M
R521
1M
R503
1K5
C516 1000p/50V
C520
0.01/50V
C511
0.047/25V
R506
3M 3KV
D501
NC
C517
0.033/50V
C502
2.2u/25V
R516
604K 1%
R508
51K 1%
C509
5p/3KV
R515
NC
U501
AP9971GM
6
54
3
7
81
2
C512
330p/50V
C519
0.01/50V
D503
BAV99
1
3
2
IC501
OZ9938G
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
DRV1
VDDA
TIMER
DIM
ISSEN
VSEN
OVPT
NC NC
ENA
LCT
SSTCMP
CT
GNDA
DRV2
PGND
R502
680
R514
22K 1%
D505
SN4148
C521
NC
R522
10K 1%
C505
1000p/50V
R519
1M
C503
0.1/50V
C506
10p/3KV
C515
2.2u/25V
D504
BAV99
1
3
2
CN501
4200-D208
1
2
H
L
D502
BAV99
1
3
2
R524
470
R517
330 1%
Q501
PMBT3904
1
32
R513
10K 1%
C513
6800p/50V
R511
NC
CN502
4200-D208
1
2
H
L
R526 10