Read LG 32LH70YD (CHASSIS:LJ91D) 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.
2008.10.15
MICOM
BCM (BRAZIL VENUS)
UCOM_RX
14:H2
R
4
6
0
6
8
K
OPT
C410
0.1uF
0.1uF
16V
GND
GND
C414
0.1uF
16V
DDC_SDA
9:G7;14:A4
R417
22
EDID_WP
14:A4
R447
4.7K
IR
14:A3;14:E6
C402
0.1uF
16V
0.1uF
16V
R
4
2
8
15K
R
4
4
4
1
0
0
OPT
R465
100
GND
R404
220
220
OPC_EN
7:I5
R461
6.8K
R
4
4
1
1
0
0
UCOM_TX
14:I1
AMP_MUTE
3:E3
R414
10K
C412
0.1uF
OPT
100
R430
R415
4.7K
C406
0.1uF
16V
R420
22
R452
47K
OPT
SDA2_3.3V
9:B5;9:I4
X401
24MHz
C407
OPT
OPT
OPT
GND
+3.3V_ST
AMP_RST
9:G7;9:I3;3:C5
R
4
3
2
4
7
K
R403
0
OPT
R413
4.7K
+3.3V_ST
R
4
3
6
2
2
GND
GND
GND
IC405
24LC16BT-I/SN
3
A2
2
A1
4
VSS
1
A0
5
SDA
6
SCL
7
WP
8
VCC
Q401
2SC3875S(ALY)
E
B
C
HDMI_CEC
2:AD26
R466
100
OPT
SCL2_3.3V
9:B5;9:I4
RL_ON
4:C7;14:E5
KEY1
14:E6
R459
4.7K
C411
100uF
16V
16V
GND
R407
47K
R405
220
220
DDC_SCL
9:G7;14:A4
R
4
3
4
2
2
+3.3V_ST
GND
IC402
KIA7029AF
2
G
3
O
1
I
R402
OPT
OPT
PANEL_CTL
4:H1
GND
R
4
4
6
0
OPT
R455
4.7K
+3.3V_ST
R
4
2
7
4
.
7
K
IC406
MTV416GMF
1
HSYNC/P1.5
2
VSYNC/P1.6
3
P1.7/SOGI
4
RST
5
HSCL1/P3.0/RXD
6
P4.3/AD3
7
HSDA1/P3.1/TXD
8
P3.2/INT0
9
P3.3/INT1
10
ISDA/P3.4/T0
11
ISCL/P7.5
12
HSDA2/P7.4
13
HSCL2/P7.3
14
X2
15
X1
16
VSS
17
P4.0/AD0
18
P6.0/CLKO1
19
P6.1
20
P6.2
21
P6.3
22
P6.4
23
P6.5
24
P6.6
25
P6.7
26
P7.2/HCLAMP
27
P7.1/VBLANK
28
P4.1/AD1
29
P7.0/HBLANK
30
P5.7/CLKO2
31
P5.6
32
P5.5
33
P5.4
34
P5.3
35
P5.2
36
P5.1
37
P5.0
38
VDD
39
P4.2/AD2
40
P1.0/ET2
41
P1.1/DA0
42
P1.2/DA1
43
P1.3/DA2
44
P1.4/DA3
KEY2
14:E6
+3.3V_ST
GND
C408
22pF
50V
22pF
50V
R429
OPT
OPT
OPT
+3.3V_ST
R424
22
GND
R
4
4
5
0
OPT
GND
R423
OPT
OPT
C409
22pF
50V
22pF
50V
C413
0.1uF
R425
22
C403
0.1uF
16V
0.1uF
16V
R467
22
+3.3V_ST
R406
4.7K
R449
100
OPT
UCOM_SDA_3.3V
14:E6
R450
100
OPT
UCOM_SCL_3.3V
14:E7
+3.3V_ST
R469
100
OPT
FLASH_WP_1
9:C1
ERROR_OUT
4:C5
INV_ON/OFF
4:C5
R468
100
R
4
3
5
0
OPT
R
4
3
9
0
OPT
R
4
4
2
4
.
7
K
POWER_DET
9:A7;B3
LED_POWER_ON
14:E5
LED_WARM_STBY
14:E5
R474
100
R471
100
R464
100
R475
1K
RESET
9:A7
R479
1K
OPT
POWER_DET
9:A7;I4
+12V
+24V
+5.0V
+3.3V_ST
R431
100
OPT
R401
1K
R416
0
R
4
4
3
2
2
R3010
6.8K
6.8K
GND
R3017
4.7K
R3018
4.7K
R470
100
R476
15K
R478
10K
OPT
R480
2.2K
2.2K
OPT
IC1003
NCP803SN293
1
GND
3
VCC
2
RESET
+3.3V_ST
R487
100K
OPT
R484
30K
R482
30K
OPT
OPT
R486
0
OPT
R3024
0
0
OPT
R485
10K
R481
0
OPT
R3026
5.1K
R462
100
100
R456
100
100
R483
0
R3031
0
0
OPT
Q404
2SC3052
OPT
E
B
C
Q405
2SC3052
2SC3052
OPT
E
B
C
R
4
5
3
1
K
R451
2K
R454
2K
R2023
33K
R421
4.7K
R418
4.7K
C3016
0.1uF
16V
0.1uF
16V
Q907
RT1N141C-T112-1
RT1N141C-T112-1
E
B
C
R472
4.7K
+5.0V
GND
D3.3V
+5V_ST
R
4
4
0
1
0
0
R477
6.8K
12
15
M5V_ON
POWER DETECT
LIM.K.R
R435 : READY FO 1.2V BCM ENABLE
READY FO 1.2V BCM ENABLE
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