ViewSonic VA702-1 Service Manual page 53

+14V
R528
R522
182K 1% 91K 1%
R523
100K 1%
BRIGHTNESS
R524
51K 1% 1n/50V
47K 1%
R526
ON/OFF
R529
1M
Item AUO QDI INL
R509 510Ω 510Ω 560Ω
R511 510Ω 510Ω 560Ω
R524 51KΩ 47KΩ 47KΩ
NOTE:
紅色粗線:表示高電壓迴路;
紅色虛線:表示易發熱元件;
橘色粗線:表示大電流迴路;
ViewSonic Corporation
C511
2.2uF/25V
IC501
1
NDRV2 PDRV2
2
PGND PDRV1
3
NDRV1 HSB
4
GNDA VIN
5
CT V5000
C529
6
220P/50V LCT ISEN
7
DIM CMP_SST
8
C504
ENA VSEN
OZ9910G
R527
3.3M 1%
C505
C506
0.01u/25V 4700P/50V
C507
2200p/50V
Q505
2N7002
2 3 2
C531 C534
0.1u/50V 0.1u/50V
R521 R519
1M 1M
D512
1N4148W
VA702-1_VA702b-1
Confidential - Do Not Copy
50
+
C522
220uF/25V
5V
D513 SKS20-04AT
2
U501
1
S1
16 2
G1
3
S2
15 4
G2
C528
1.0u/25V
14 AOP605
13
12 +5V
U502
11 AOP605
C503 1
S1
100n/50V
10 2
C502 G1
3
2.2u/25v
S2
9 4
G2
2
D514
SKS20-04AT
+
C509
5V
220uF/25V
OVP1
IS1
OVP2
R506
3.9K 1%
IS3
R505
C508
R507
1M 22n/25V
3.9K 1%
Q501
2N7002
2
Q504 Q503 Q502
2N7002 2N7002 2N7002
3 2 3 2 3
C532 C533 100K
R508
0.1u/50V 0.1u/50V
R517 R515
1M 1M
D511 D510 D509
1N4148W 1N4148W 1N4148W
R501
3M/3kv
3
T501
EEL-19 22:2600 C524
10P/3KV
2 8 R502
3.9K
3
1
5
8 6 7
D1
7
D1
6 C527
D2
5 5P/3KV
D2
3
C530 C535
6.8n/50V NC
8 T502
D1
7 EEL-19 22:2600
D1
6
D2
5 2 8
D2
1 3 R503
3M/3KV
5
3
6 7
R504
C526 3.9K
10P/3KV
C525
3 5P/3KV
3
C523 C536
6.8n/50V NC
5V
H
3
L
CN504
2
D508 D506
2 1
1 BAV99 BAV99
OP4
R512
1k
CN502
H
L
3
2 OVP1
D507 D501
1 BAV99 BAV99
2 1
OP3
R513
IS3 510 1%
R511
510 1%
H
3
L
2
CN503
D503
OP2
1 BAV99 D504
2 1
BAV99
R510
1k
CN501
H
3
L
2 OVP2
D505 D502
OP1
1 BAV99 BAV99
2 1
R514 510 1%
IS1
R509 510 1%
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Model
INVERTER
Title
Date Rev: