1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D
D
C
C
B
B
A
A
反激线路
GND
12V
a
1
2
P
C
B
10
1A
RB135
CB109
CB110
RB134
GND
SGND
a
GND
12V
1
2
CNB2
SGND
SGND
SGND
SGND
GND
VBL
GND
12V
Vbridge
BRO
a
a
3
4
PCB101B
RB107
RB125
R
B
14
0
CB117
R
B
12
3
a
EB104
a
EB105
A
K
D
B
10
4
RB126
RB127
CB102
SGND
RB124
C
B
11
3
R
B
11
6
CB103
RB101
RB102
RB106
C
B
11
4
BB101
SGND
SGND
R
B
11
7
R
B
11
8
K
A
R
UB102
RB131
RB132
RB133
T
P
-T
D
T
i
HOT
TP.XXX.PXX AXXX
Model Name:
CHK
a
D:
DATE:
VERSION:
DATE:
DRAWN:
XXX
2015-0X-XX
V1.0
XXX
2015-0X-XX
i
POWER
CB118
CB120
6
4
1
2
10
9
11
7
5
TB101
R
B
11
4
R
B
11
5
CB116
DB111
RB105
DB101
CYB3
RB109
EMI
电路
SGND
Vbridge
a
a
a
a
a
a
a
a
R
B
1
R
B
2
R
B
3
R
B
4
a
NTCB1
GND
a
a
a
a
a
NC/NTCB2
L
i
HOT
C
X
B
1
1
4
2
3
NC/LCB3
1
2
4
3
LCB2
3
1
N
L
CNB1
DB1
DB2
DB3
DB4
CYB1
CYB2
a
N
C
/M
O
V
B
1
a
T3.15AH 250V~
FB1
a
R
B
11
9
R
B
12
0
R
B
12
1
A
K
DB106
C
B
10
4
C
B
10
1
a
EB107
1
1
3
3
2
2
ZDB101
RB129
RB128
RB130
a
E
B
10
1
a
E
B
10
2
RB145
1
4
2
3
NC/LCB1
RB138
DB102
JP1
JP2
a
EB2
a
a
R
B
14
8
a
EB1
1
1
HS
2
2
HSB3
12V
NC/CYB4
NC/CYB5
L
R
B
11
3
R
B
10
3
SGND
BRO
RB141
RB142
CB111
L
GND
1
COMP
2
NC
3
CS
4
VCC
5
GATE
6
UB101
RB104
D
G
S
QB101
a
1
1
HS
2
2
HSB1
1
1
HS
2
2
HSB2
D_QB101
D_QB101
a
a
a
a
a
a
GND
GND
LED_OVP
LED
a
LED_GATE
a
EB801
a
EB802
BB801
RB811
RB810
RB807
RB808
DB809
RB809
D_QB801
R
B
81
8
RB805
LED_CS
CB815
LED
a
GND
LB801
VBL
CB804
GND
LED1
LED2
LED3
LED4
LED_CS
LED_GATE
RB822
RB815
GND
R
B
80
4
VIN
GND
GND
RB827
CB806
LED_OVP
RB803
R
B
81
3
R
B
81
2
GND
GND
CB807
RB801
PWM_DIM
12V
GND
RB802
BL_ON
CB802
VREF
LED_ISET
PWM
16
SSTCMP
15
ISEN1
1
ISEN2
2
GND
3
ISEN3
4
ISEN4
5
ISET
6
OVP
7
RT
8
ENA
9
ISW
10
LDR
11
VREF
12
VIN
13
LPF
14
E
P
A
D
17
UB801
LB802
LPF
GND
VIN
R
B
81
9
R
B
82
0
PWM_DIM
BL_ON
BL_ON
PWM_DIM
PWM_DIM
BL_ON
ADIM
ADIM
ADIM
25KHz PWM
与
TV
端连接网络
Vrms=99
Vrms=99
RB816
CB814
CB811
CB805
CB813
ADIM
LPF
RB836
QB803
RB837
RB839
GND
LED_ISET
BL_OVLD
R
B
83
8
BL_OVLD
BL_OVLD
BL_OVLD
CB826
C
B
82
7
CB810
CB809
R
B
81
4
R
B
83
4
200Hz PWM
D
B
80
2
VBL
LED1
LED2
RB823
LED3
RB824
RB825
LED4
R
B
82
1
D
G
S
QB801
DB801
LED
a
LED1
1
2
3
4
CNB801
2
5
6
LB803
DB103
NC/RB161
R
B
16
2
R
B
16
3
Summary of Contents for 32D1281
Page 27: ...1 No power No power LED RC or Key can not turn on TV Power LED no light no change...
Page 28: ...2 No Display Black Panel Back light is OK sound is OK but no picture...
Page 29: ...3 No back light Power LED logic OK sound OK but no picture Different from No Display...
Page 30: ...4 No sound One or all signal source without sound...
Page 31: ...5 Signal source no function One or several source no function...