Haier LD42U7000, Service Manual

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57
5
）
LED Current Balance
C8504
0.47UF 50V
C8505
0.47UF 50V
DIM
1
EN
2
VCC
3
LED
4
GND
5
ISET
6
GM
7
COMP
8
IC8502
PF7700A
DIM
1
EN
2
VCC
3
LED
4
GND
5
ISET
6
GM
7
COMP
8
IC8503
PF7700A
DIM
1
EN
2
VCC
3
LED
4
GND
5
ISET
6
GM
7
COMP
8
IC8504
PF7700A
DIM
1
EN
2
VCC
3
LED
4
GND
5
ISET
6
GM
7
COMP
8
IC8505
PF7700A
DIM
1
EN
2
VCC
3
LED
4
GND
5
ISET
6
GM
7
COMP
8
IC8506
PF7700A
OEM MODEL Size
Rev
Date Sheet of
TPV MODEL
PCB NAME
称 爹
T P V ( Top Victory Electronics Co . , Ltd. )
Key Component
絬 隔 瓜 絪 腹
A3
5 5 Friday , June 14, 2013
05. LED current balance
GXXXX-P0A-000-0020-1-20120605
715GGXXXX-P0A-000-0020
+12V
+12V
+12V
C8517
1N 50V
R8511
10K 1/8W 1%
R8512
NC
On/Of f
C8518
1N 50V
DIM_IN
DIM
EN
R8513
10K 1/8W 1%
DIM_IN
LED-COMP
DIM_IN LED-COMP
LED-COMP
DIM_IN
EN
EN
EN
LED-COMP
LED-1
LED-2
LED-1
DIM
1
EN
2
VCC
3
LED
4
GND
5
ISET
6
GM
7
COMP
8
IC8501
PF7700A
LED-5
LED-2
LED-6
LED-3
LED-4
LED-5
+12V
LED-COMP
EN
C8516
100N 50V
C8503
0.47UF 50V
R8506
12K 1/8W 1%
EN
C8506
0.47UF 50V
LED-6
C8513
100N 50V
LED-3
LED-COMP
DIM_IN
R8503
12K 1/8W 1%
R8501
12K 1/8W 1%
DIM_IN
+12V
R8502
12K 1/8W 1%
1
2
3
4
5
6
7
8
9
10
11
12
CN8501
CONN
R8504
12K 1/8W 1%
R8505
12K 1/8W 1%
+ C8510
22UF 50V
C8501
0.47UF 50V
DIM_IN
EN
LED-4
+12V
C8502
0.47UF 50V
VLED
C8514
100N 50V
C8512
100N 50V
C8515
100N 50V
C8511
100N 50V
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