Read LG 37LH7000 / 37LH7020 / 37LH7030 (CHASSIS:LD91D) Service Manual online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
4.7uF
16V
C442
100
R435
10K
R430
100
R433
4.7uF
16V
C440
100
R418
22uF
16V
C444
4.7uF
16V
C451
100
R432
4.7uF
16V
C438
4.7uF
16V
C450
100
R414
4.7uF 16V
C439
100
R417
4.7uF
16V
C449
0.01uF 50V
C443
100
R431
100
R419
100
R415
100
R420
TEA6420D
IC405
3
VS
2
CAPACITANCE
4
L1
1
GND
6
L3
5
L2
7
NC1
8
NC2
9
L4
10
L5
11
LOUT1
12
ROUT1
13
LOUT2
14
ROUT2
15
LOUT3
16
ROUT3
17
LOUT4
18
ROUT4
19
R5
20
R4
21
NC3
22
NC4
23
R3
24
R2
25
R1
26
ADDR
27
SCL
28
SDA
4.7uF 16V
C441
100
R416
100
R434
4.7uF
16V
C448
100
R436
4.7uF
16V
C447
100
R437
100
R424
+5V_GENERAL
100
R423
100
R421
100
R422
100
R427
22
R429
100
R426
0.1uF
50V
C445
JLC1562BFEL
IC406
3
A2
2
A1
4
D0
1
A0
6
D2
5
D1
7
D3
8
Vss
9
D4
10
D5
11
D6
12
D7
13
VDAC
14
SCL
15
SDA
16
VDD
47uF
16V
C446
22
R428
100
R425
OPT
+5V_TUNER
+1.8V_TUNER
0.1uF
16V
C407
4.7uF
10V
OPT
C435
GND
100uF
16V
C422
100uF
16V
C437
0.1uF
16V
C402
P_+12V
+3.3V_TUNER
0.1uF
16V
C423
0.1uF
16V
C420
0.1uF
16V
C428
100uF
16V
C425
0.1uF
16V
C403
KA7809ERTM
IC400
2
G
3
O
1
I
0.1uF
C408
100uF
C414
100uF
16V
C400
SC2_R_IN
SC2_L_IN
SC1_R_IN
SC1_L_IN
PC_R_IN
PC_L_IN
COMP_L_IN
COMP_R_IN
AV_L_IN
AV_R_IN
0.1uF
16V
C427
+5V_GENERAL
100uF
16V
C436
4.7uF
10V
OPT
C431
AV_L_OUT
AV_R_OUT
+9V_GENERAL
+9V_GENERAL
+5V_GENERAL
AV_CVBS_DET
S_DET
DSUB_DET
COMP_DET
SCART1_DET
SCART2_DET
5600pF
50V
C410
9.1K
R408
12.4K
1%
R409
MP2305DS
IC401
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
22uF 16V
C409
22uH
L401
0.01uF
50V
C405
0.47uF
25V
C404
56K
1%
R405
0.1uF
50V
C413
100K
R406
FE_DEMOD_SDA
FE_DEMOD_SCL
100uF
16V
C412
0.1uF
16V
C424
FE_DEMOD_SCL
FE_DEMOD_SDA
AP1117E33G-13
IC402
2
OUT
3
IN
1
ADJ/GND
AP1117E18G-13
IC404
2
OUT
3
IN
1
ADJ/GND
22
R446
SC1_VIDEO_MUTE
0
R447
0
R448
+5V_GENERAL
10K
R449
CB3216PA501E
L406
CB3216PA501E
L407
22uF
16V
C401
22uF
50V
C452
OPT
FE_DEMOD_SDA
+3.3V_ST
FE_TS_VAL_ERR
FE_TS_SERIAL
FE_TS_DATA[0-7]
FE_TS_DATA_CLK
FE_TUNER_SCL
FE_DEMOD_SCL
FE_RESET
FE_TUNER_SDA
FE_TS_SYNC
P_+12V
47
R440
47
R441
TUNER_CVBS_IF_P
DTV/MNT_V_OUT
SPDIF_OUT
TV_L_OUT
DSUB_R
DBG_RX
DSUB_G
COMP_Y
AV_L_OUT
HP_DET
SC1_CVBS_IN
SC2_CVBS_IN
HP_L_OUT
DSUB_HSYNC
DSUB_VSYNC
+5V_VGA
TV_R_OUT
DTV/MNT_R_OUT
FE_AGC_SPEED_CTL
HP_R_OUT
TUNER_SIF_IF_N
REC_8
COMP_Pb
DDC_SCL/UART_RX
SC1_R
TUNER_SIF_IF_N
SC1_FB
S_C_IN
SC1_G
DDC_SDA/UART_TX
SC1_B
AV_CVBS_IN
COMP_Pr
DBG_TX
AV_R_OUT
DTV/MNT_L_OUT
SC1_ID
S_Y_IN
DSUB_B
SC2_ID
47
R438
47
R439
1/10W
0
5%
R451
RF_ATTENUATION
BLM18PG121SN1D
L404
BLM18PG121SN1D
L405
47
R452
OPT
GF05C-96S
P400
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
41
41
42
42
43
43
44
44
45
45
46
46
47
47
48
48
49
49
50
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
59
59
60
60
61
61
62
62
63
63
64
64
65
65
66
66
67
67
68
68
69
69
70
70
71
71
72
72
73
73
74
74
75
75
76
76
77
77
78
78
79
79
80
80
81
81
82
82
83
83
84
84
85
85
86
86
87
87
88
88
89
89
90
90
91
91
92
92
93
93
94
94
95
95
96
96
97
97
FE_TS_DATA[0]
FE_TS_DATA[1]
FE_TS_DATA[2]
FE_TS_DATA[3]
FE_TS_DATA[4]
FE_TS_DATA[5]
FE_TS_DATA[6]
FE_TS_DATA[7]
4 4
IN/OUT
MStar
ADDR 9A
AUDIO SWITCH
POWER
I/O EXPANSION
ADDR 71
TUNER JACK PIN
(TUNER SIF)
(TUNER CVBS)
(TUNER RESET)
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