Read LG 32LH70 (CHASSIS:LA92D) 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.
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.
+5V_ST
VGA_EEPROM_WP
D400
ENKMC2838-T112
A1
C
A2
USB_DP
USB_DM
DDC_SCL/UART_RX
DDC_SDA/UART_TX
ISP_TXD
ISP_RXD
R424
0
KEY2
IR
SDA_SUB/AMP
+3.3V_ST
+3.3V_ST
+5V_ST
KEY1
R423
0
SCL_SUB/AMP
+5V_VGA
+5V_EXT
SUB_SPK_MONO
C410
100pF
100pF
50V
C409
1000pF
50V
C405
1000pF
50V
C401
18pF
18pF
50V
C402
18pF
50V
C423
0.1uF
C400
0.1uF
16V
C403
0.1uF
16V
C407
0.1uF
C406
0.1uF
16V
C408
0.1uF
R413
0
R409
0
R439
0
R403
100
1%
R402
100
1%
R416
100
R412
10K
R470
47
47
USB_CTL
USB_OCD
001:AI16
D401
5.6V
CDS3C05HDMI1
D402
5.6V
CDS3C05HDMI1
R438
180
+3.3V
LED_ON
R405
4.7K
R407
4.7K
C422
10uF
10V
10uF
10V
R482
4.7K
SUB_WARM_ST
R483
OPT
R481
OPT
Q433
2SC3052
OPT
E
B
C
+3.3V_ST
R480
120K
120K
OPT
R478
4.7K
4.7K
R475
10K
L400
BLM18PG121SN1D
L401
BLM18PG121SN1D
L411
BLM18PG121SN1D
120-ohm
L403
BLM15BD121SN1
L404
BLM15BD121SN1
L405
BLM15BD121SN1
R404
4.7K
4.7K
R406
4.7K
4.7K
P402
12507WR-14L
1
3.3V_SCL
2
3.3V_SDA
3
GND
4
KEY1
5
KEY2
6
5V_ST
7
GND
8
IR
9
GND
10
3.3V_ST
11
WARM_ST
12
POWER ON
13
SPK N
14
SPK P
15
C411
0.1uF
16V
C412
0.1uF
16V
OPT
IC401
MIC2009YM6-TR
3
ENABLE
2
GND
4
FAULT/
1
VIN
6
VOUT
5
ILIMIT
PG_BOX_IR
R410
47
+5V_JACK
+9V_GENERAL
SPDIF_OUT
AV_L_OUT
FE_SIF
R411
47
FE_TUNER_SCL
FE_TS_DATA[6]
DSUB_G
R485
0 OPT
FE_TS_DATA[0]
R484
0 OPT
FE_TS_DATA[1]
DSUB_R
FE_TS_DATA[3]
DSUB_HSYNC
FE_DEMOD_SCL
FE_TUNER_SDA
AV_R_OUT
+5V_VGA
FE_TS_DATA[7]
DSUB_B
FE_TS_DATA[2]
FE_TS_DATA[5]
DSUB_VSYNC
FE_TS_DATA[4]
FE_DEMOD_SDA
COMP_Pr_1
COMP_Pb_1
COMP_Y_1
COMP_Pb_2
COMP_Pr_2
DBG_TX
AV2_CVBS_IN
DBG_RX
AV1_CVBS_IN
COMP_Y_2
CONTROL_ATHEN
DDC_SCL/UART_RX
VSB_RESET
DDC_SDA/UART_TX
TUNER_RESET
FE_TS_SYNC
FE_TS_CLK
FE_TS_VALID
FE_VMAIN
R468
33
R440
47
R442
47
R441
47
AR401
33
AR400
33
L413
BLM18PG121SN1D
C428
0.1uF
0.1uF
+3.3V_ST
C427
0.1uF
0.1uF
C424
47uF
10V
47uF
10V
C425
47uF
10V
47uF
10V
PG_BOX_IR
IR
Q401
2SC3052
2SC3052
US
E
B
C
+5V_ST
R487
100K
US
R489
3.3K
US
R486
100K
US
IC400
M24C02-RMN6T
3
E2
2
E1
4
VSS
1
E0
5
SDA
6
SCL
7
WC
8
VCC
C2054
1000pF
50V
1000pF
50V
C2055
1000pF
50V
1000pF
50V
JK400
KJA-UB-0-0037
1
2
3
4
5
ZD402
5.6B
ROHM
ZD401
5.6B
ZD400
5.6B
D403
5.6V
ADMC5M03200L
D406
5.6V
ADMC5M03200L
D404
5.6V
ADMC5M03200L
D405
5.6V
ADMC5M03200L
R748
4.7K
BT_ON/OFF
R749
0
R745
0
OPT
Q706
RTR030P02
S
D
G
C771
1uF
BT_DP
BT_DM
R747
0
+5V_EXT
BT_LOUT_AMP
Q705
2SC3052
E
B
C
R746
47K
P903
12507WR-08L
1
2
3
4
5
6
7
8
9
P400
GF05C-96S
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
+3.3V_ST
R429
100
R428
10K
R473
4.7K
OPT
Q402
2SC3052
OPT
E
B
C
R,G,B PC EDID
JACK/IR/USB
14 14
ATSC_VENUS
EAN43439401
Pin to Pin with
$0.18
S_Y_IN
S_C_IN
DTV/MNT_R_OUT
SC1_ID
SC1_CVBS_IN
SC2_ID
REC_8
SC1_G
TV_L_OUT
DTV/MNT_L_OUT
HP_R_OUT
AM_AUDIO(SIF)
DTV/MNT_V_OUT
HP_DET
TV_R_OUT
HP_L_OUT
SC1_B
SC2_CVBS_IN
SC1_FB
SC1_R
FE_BOOSTER_CTL
TUNER JACK PIN
VENUS APPLICATION
(Not enough space)
Pigy Box IR
CONTROL IR & LED
USB +5V Over Current Protection --> USB Jack
USB JACK
BLUETOOTH
08.11.14
DO JAE GEUN
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