LG 32LH40 / 32LH41 (CHASSIS:LA92B) Service Manual ▷ View online
C
2009
- 29 -
300
310
200
800
530
540
520
900
120
500
121
550
510
121
122
400
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
parts are identified by in the Schematic Diagram and EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
A2
LV1
A10
LV2
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.
DSUB_B
001:D28
0
R1305
COMP1_L_IN
001:R32
DSUB_G
001:D29
18pF
50V
C1222
470K
R1247
0
OPT
R1268
4.7K
R1249
PC_L_IN
001:R32
470K
R1245
OPT
C1216
COMP2_L_IN
001:R33
COMP1_R_IN
001:R32
12K
R1263
10K
R1270
75
R1238
BG2012B080TF
L1208
+5V_ST
100pF
OPT
C1227
COMP2_DET
001:AR23
75
R1243
VGA_EEPROM_WP
001:AR22
12K
R1264
10K
R1251
12K
R1294
R1294
75
R1286
1K
R1283
0
R1232
12K
R1255
R1255
0.1uF
16V
C1228
75
R1242
+3.3V
OPT
C1218
10K
R1252
12K
R1303
DSUB_DET
SIDEAV_R_IN
001:R33
100pF
50V
C1240
COMP2_R_IN
001:R33
75
R1235
100pF
50V
C1224
SIDEAV_CVBS_IN
001:D26
10K
R1291
ISP_TXD
001:AB27;001:AR31
SIDEAV_L_IN
001:R33
0
R1233
100
R1269
10K
R1259
1K
R1240
470K
R1298
COMP1_PB
001:D27
1000pF
50V
C1237
10K
R1301
ENKMC2838-T112
D1223
A1
C
A2
10K
R1277
1K
R1271
+3.3V
75
R1236
SIDEAV_DET
001:AR23
1000pF
50V
C1238
BG2012B080TF
L1207
10K
R1262
+3.3V
COMP2_PB
001:D31
BG2012B080TF
L1206
ISP_RXD
001:AB27
1000pF
50V
C1221
+5V_GENERAL
10K
R1292
470K
R1246
AT24C02BN-10SU-1.8
IC1200
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
10K
R1258
22
R1257
OPT
C1217
12K
R1256
R1256
470K
R1244
470K
R1289
10K
R1300
DSUB_VSYNC
001:D29
100pF
C1219
PC_R_IN 001:R31
1000pF
50V
C1220
100pF
50V
C1225
COMP2_PR
001:D31
COMP1_Y
001:D27
22
R1265
75
R1234
4.7K
R1253
0
R1307
470K
R1290
PEJ024-01
JK1205
6B
T_TERMINAL2
8
SHIELD_PLATE
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
COMP1_PR
001:D28
18pF
50V
C1223
100pF
50V
C1241
COMP2_Y
001:D31
12K
R1293
R1293
COMP1_DET
001:AR23
PPJ218-01
JK1202
5C
[RD]CONTACT
2C
[RD]U_CAN
4C
[RD]O_SPRING
2B
[WH]U_CAN
3B
[WH]C_LUG
2A
[YL]U_CAN
5A
[YL]CONTACT
4A
[YL]O_SPRING
75
R1287
DSUB_R
001:D29
1K
R1254
75
R1288
DSUB_HSYNC
001:D29
12K
R1304
10K
R1237
470K
R1297
75
R1241
100pF
50V
C1251
10K
R1204
75
1%
R1215
47pF
50V
C1252
12K
R1207
AV_CVBS_IN
001:D26
12K
R1210
AV_R_IN
AV_L_IN
100pF
50V
C1250
470K
R1208
+3.3V
470K
R1206
10K
R1205
10K
R1211
BG2012B080TF
L1217
BG2012B080TF
L1218
10K
R1248
AV_CVBS_DET
001:AR23
1K
R1212
100pF
50V
OPT
C1206
KCN-DS-1-0089
JK1201
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
OPT
D610
+3.3V
+5V_GENERAL
0.1uF
50V
C660
F i b e r O p t i c
JST1223-001
JK601
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
1K
R638
SPDIF_OUT
001:W29
ADMC5M03200L_AMODIODE
5.6V
D1211
ZENER
ADMC5M03200L_AMODIODE
5.6V
D1212
ZENER
ADMC5M03200L_AMODIODE
5.6V
D1213
ZENER
ADMC5M03200L_AMODIODE
5.6V
D1214
ZENER
ADMC5M03200L_AMODIODE
5.6V
D1220
ADMC5M03200L_AMODIODE
5.6V
D1221
ADMC5M03200L_AMODIODE
5.6V OPT
D1222
ADMC5M03200L_AMODIODE
5.6V
OPT
D1224
ADMC5M03200L_AMODIODE
5.6V
D1225
ADMC5M03200L_AMODIODE
5.6V
D1229
ZENER
ADMC5M03200L_AMODIODE
5.6V
D1230
ZENER
ADMC5M03200L_AMODIODE
5.6V
D1231
ADMC5M03200L_AMODIODE
5.6V OPT
D1234
ADMC5M03200L_AMODIODE
5.6V OPT
D1235
ADMC5M03200L_AMODIODE
5.6V
D1242
Z E
N E
R
ADMC5M03200L_AMODIODE
5.6V
D1243
Z E
N E
R
ADUC30S03010L_AMODIODE
30V
D1207
Z E
N E
R
ADUC30S03010L_AMODIODE 30V
D1208
ZENER
ADUC30S03010L_AMODIODE 30V
D1209
ZENER
ADUC30S03010L_AMODIODE 30V
D1210
ZENER
ADUC30S03010L_AMODIODE
30V
D1215
ZENER
ADUC30S03010L_AMODIODE
30V
D1216
Z E
N E
R
ADUC30S03010L_AMODIODE
30V
D1217
Z E
N E
R
ADUC30S03010L_AMODIODE
30V
D1218
Z E
N E
R
ADUC30S03010L_AMODIODE
30V
D1219
Z E
N E
R
ADUC30S03010L_AMODIODE 30V
D1226
ZENER
ADUC30S03010L_AMODIODE 30V
D1227
ZENER
ADUC30S03010L_AMODIODE 30V
D1228
ZENER
ADUC30S03010L_AMODIODE
30V
D1245
Z E
N E
R
PPJ227-01
JK1206
9
N
[GN]E-LUG
5
K
[GN]O-SPRING-L
6
K
[GN]CONTACT-L
4
E
[GN]O-SPRING-S
3
E
[GN]CONTACT-S
9
M
[BL]E-LUG
7
J
[BL]C-LUG-L
8
D
[BL]C-LUG-S
9L
[YL]E-LUG
4
L
[YL]O-SPRING-S
3
L
[YL]CONTACT-S
7
H
[RD]C-LUG-L
8
C
[RD]C-LUG-S
9
G
[WH]E-LUG
8
M
[WH]C-LUG-S_1
7
G
[WH]C-LUG-L
8
B
[WH]C-LUG-S_2
9
F
[RD]E-LUG
4
N
[RD]O-SPRING-S_1
3
N
[RD]CONTACT-S_1
5
F
[RD]O-SPRING-L
6
F
[RD]CONTACT-L
4
A
[RD]O-SPRING-S_2
3
A
[RD]CONTACT-S_2
0.33uF
C1229
100K
R1273
4.7K
R1279
R1279
100
OPT
R1284
47pF
50V
C1243
DBG_RX
0
R1276
220pF
50V
C1235
0.1uF
C1230
4.7K
R1278
R1278
30V
OPT
D1237
ADUC30S03010L
0.1uF
C1231
100K
R1272
100
R1282
100
OPT
R1285
0
R1275
0.1uF
16V
C1234
BLM18PG121SN1D
L1209
220
R1299
0.1uF
C1232
220
R1302
3.3K
R1274
KCN-DS-1-0088
JK1203
1
2
3
4
5
6
7
8
9
10
0.1uF
C1233
MAX3232CDR
IC1201
3
C1-
2
V+
4
C2+
1
C1+
6
V-
5
C2-
7
DOUT2
8
RIN2
9
ROUT2
10
DIN2
11
DIN1
12
ROUT1
13
RIN1
14
DOUT1
15
GND
16
VCC
47pF
50V
C1242
100
R1281
+3.3V_ST
+5V_ST
IR
30V
OPT
D1236
ADUC30S03010L
2SC3052
Q1200
E
B
C
DBG_TX
220pF
50V
C1239
ADMC5M03200L_AMODIODE
5.6V
D1244
3.3K
OPT
R1218
2SC3052
OPT
Q1201
E
B
C
+5V_ST
0
R1216
10K
OPT
R1217
AV
COMPONENT1
SIDE_AV
COMPONENT2
PC AUDIO
Neet to pull up 3.3V
RGB PC
SPDIF OPTIC JACK
COMPONENT1/2,AV1
TxD
Serial Port
RxD
male
RS-232C
C
2009
IN / OUT
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.
0
R544
+1.8V_HDMI
TDA9996_SDA
D1-_HDMI4
0.1uF
C527
0
R557
TDA9996_SCL
DDC_SCL_3
D2-_HDMI1
0.1uF
C507
0.1uF
16V
C519
5V_HDMI_4
5V_HDMI_1
+3.3V_HDMI
0.1uF
16V
C529
CK-_HDMI1
D0-_HDMI3
0
R551
0.1uF
16V
C510
0.1uF
16V
C512
0.
1u
F
C516
+1.8V_HDMI
CK+_HDMI1
HPD2
0.
1u
F
C513
4.7K
R552
OPT
0.1uF
C525
HDMI_RX0-
CK+_HDMI4
D2+_HDMI4
0.1uF
C526
HPD4
D2+_HDMI3
D1-_HDMI1
+3.3V_HDMI
CK+_HDMI3
D0+_HDMI1
D0-_HDMI4
0.1uF
16V
C523
R549
HPD1
0.1uF
16V
C506
HDMI_CLK+
DDC_SDA_2
D1+_HDMI1
HDMI_RX2+
0
OPT
R560
0.
1u
F
C517
D2-_HDMI2
D1+_HDMI2
+3.3V_HDMI
CK-_HDMI4
CEC_REMOTE
D2-_HDMI3
0.
1u
F
C515
DDC_SCL_1
0.1uF
16V
C518
HDMI_RX1+
0
R550
0.1uF
16V
C520
CK-_HDMI2
HDMI_RX0+
D0-_HDMI2
12K
R556
0
R543
0.1uF
16V
C522
DDC_SDA_3
+5V_ST
D0+_HDMI2
D2+_HDMI1
HDMI_SCL
0.1uF
16V
C509
D1-_HDMI2
HDMI_RX2-
D1+_HDMI3
0
R548
0.
1u
F
C511
D0+_HDMI3
D0+_HDMI4
CK+_HDMI2
D2+_HDMI2
DDC_SCL_4
H D
M I_
S D
A
DDC_SDA_1
CK-_HDMI3
0.1uF
16V
C524
0.
1u
F
C514
5V_HDMI_2
0.1uF
16V
C508
DDC_SDA_4
0.1uF
C528
D0-_HDMI1
D2-_HDMI4
0
OPT
R555
D1+_HDMI4
5V_HDMI_3
OPT
R554
0.
1u
F
C521
HDMI_CLK-
OPT
R553
D1-_HDMI3
HDMI_RX1-
HPD3
DDC_SCL_2
0.1uF
C530
+1.8V_AMP
CB3216PA501E
L500
+1.8V_HDMI
AVRL161A1R1NT
VR501
OPT
CK+_HDMI1
005:Z12
1K
R1504
OPT
CEC_REMOTE
005:H8;005:H26;005:L27;005:R8;005:AM11
1K
R517
OPT
DDC_SCL_2
005:Y25;005:AM12
DDC_SCL_1
005:R20;005:Y13
0
R503
0
R581
1K
R1501
OPT
0R
5
8
0
1K
R522
OPT
0
R504
JP500
D2+_HDMI1
005:Z10
DDC_SDA_2
005:Y26;005:AM12
0
R508
D1-_HDMI1
005:Z11
0
R512
D1+_HDMI1
005:Z11
AVRL161A1R1NT
VR504
OPT
47K
OPT
R1500
47K
OPT
R1503
JP505
0
R514
0R
5
8
8
D0+_HDMI1
005:Z12
CEC_REMOTE
005:H8;005:H17;005:L27;005:R8;005:AM11
D0+_HDMI3
005:AF6
GND
CEC_REMOTE
005:H26;005:H17;005:L27;005:R8;005:AM11
0
R513
0
R509
1KR516
OPT
5V_HDMI_3
CK-_HDMI3
005:AE6
0R
5
7
9
0R
5
9
1
D1+_HDMI2
005:AM14
0.1uF
16V
C502
OPT
DDC_SCL_3
005:AE6;005:AF25
3.6K
R501
OPT
0R
5
7
7
0.1uF
16V
C501
OPT
0
R582
5V_HDMI_2
001:Y20;005:W27;005:AK15
D0+_HDMI2
005:AM13
D0-_HDMI1
005:Z12
0R
5
7
0
D1-_HDMI3
005:AF6
0R
5
8
9
0R
5
7
6
0R
5
6
9
0
R507
D2-_HDMI2
005:AM14
HPD3
005:AD6
GND
0R
5
8
6
D2+_HDMI2
005:AM14
+3.3V_ST
0
R573
3.6K
R502
OPT
47K
OPT
R1505
0
R511
AVRL161A1R1NT
VR505
OPT
D2-_HDMI1
005:Z11
0
R590
0
R578
0
R571
0
R584
HPD1
005:Z13
5V_HDMI_1
001:AT28;005:Q22;005:AA14
CK-_HDMI1
005:Z12
CK+_HDMI3
005:AE6
DDC_SDA_1
005:R19;005:Y13
0R
5
8
7
0
R575
D0-_HDMI2
005:AM13
AVRL161A1R1NT
VR502
OPT
AVRL161A1R1NT
VR500
OPT
JP504
DDC_SDA_3
005:AE6;005:AF26
JP503
D1+_HDMI3
005:AF6
0.1uF
16V
C500
OPT
0
R506
GND
0
R583
0
R505
CK-_HDMI2
005:AM12
0R
5
9
2
JP502
HPD2
005:AM11
0
R574
0
R510
0R
5
8
5
AVRL161A1R1NT
VR503
VR503
OPT
1K
R515
OPT
3.6K
R500
OPT
D2+_HDMI3
005:AG6
D2-_HDMI3
005:AG6
D0-_HDMI3
005:AF6
+3.3V_ST
D1-_HDMI2
005:AM13
CK+_HDMI2
005:AM12
+3.3V_ST
0
R572
0
R525
GND
0
R524
1K
R521
OPT
0R
5
9
9
D2-_HDMI4
005:AF20
D0-_HDMI4
005:AG20
AVRL161A1R1NT
VR506
OPT
0R
5
9
8
0
R593
CK+_HDMI4
005:AH20
JP507
CK-_HDMI4
005:AH20
1K
R1506
OPT
D0+_HDMI4
005:AG20
3.6K
R518
OPT
0R
5
9
6
D2+_HDMI4
005:AF20
CEC_REMOTE
005:H8;005:H26;005:H17;005:L27;005:AM11
D1+_HDMI4
005:AF20
DDC_SCL_4
005:AH20;005:AM25
47K
OPT
R1507
0
R523
D1-_HDMI4
005:AG20
0.1uF
16V
C505
OPT
0R
5
9
4
0R
5
2
6
HPD4
005:AI20
DDC_SDA_4
005:AH20;005:AM25
AVRL161A1R1NT
VR507
OPT
0R
5
9
5
KJA-ET-0-0032
JK503
14
NC
13
CEC
5
DATA1_SHIELD
20
JACK_GND
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
0
R519
JP506
+3.3V_ST
5V_HDMI_4
001:AU28;005:AI18;005:AK27
0R
5
9
7
47K
R537
47K
R559
DDC_SCL_2
DDC_SDA_4
5V_HDMI_2
DDC_SCL_1
5V_HDMI_4
DDC_SDA_1
R536
R558
5V_HDMI_3
5V_HDMI_1
47K
R538
47K
R546
DDC_SCL_4
R533
R545
47K
R535
DDC_SDA_2
DDC_SDA_3
DDC_SCL_3
47K
R561
47K
R534
47K
R547
0.1uF
C504
BLM18PG121SN1D
L501
+3.3V
+3.3V_HDMI
2K
R542
2K
R541
JP501
TDA9996HL
IC502
1
VSS_1
2
OUT_C+
3
OUT_C-
4
VDDO[3V3]
5
OUT_DDC_CLK
6
OUT_DDC_DAT
7
VSS_2
8
VDDC[1V8]_1
9
RXA_HPD
10
RXA_5V
11
RXA_DDC_DAT
12
RXA_DDC_CLK
13
RXA_C-
14
RXA_C+
15
VDDH[3V3]_1
16
RXA_D0-
17
RXA_D0+
18
VSS_3
19
RXA_D1-
20
RXA_D1+
21
VDDH[3V3]_2
22
RXA_D2-
23
RXA_D2+
24
VDDH[1V8]_1
25
NC
26
VSS_4
27
TEST
28
R X
B _
H P
D
29
RXB_5V
30
R X
B _D
D C
_ D
A T
31
R X
B _
D D
C _
C L
K
32
RXB_C-
33
RXB_C+
34
VDDH[3V3]_3
35
RXB_D0-
36
RXB_D0+
37
VSS_5
38
RXB_D1-
39
RXB_D1+
40
VDDH[3V3]_4
41
RXB_D2-
42
RXB_D2+
43
VSS_6
44
C D
E C
_ D
D C
45
VDDC[1V8]_2
46
VDDC[3V3]
47
M O
D E
48
P D
49
SDA/SEL1
50
SCL/SEL0
51
XTAL_IN
52
XTAL_OUT
53
INT/HP_CTRL
54
CDEC_STBY
55
VDDS[3V3]
56
VSS_7
57
CEC
58
RXC_HPD
59
RXC_5V
60
RXC_DDCC_DAT
61
RXC_DDC_CLK
62
RXC_C-
63
RXC_C+
64
VDDH[3V3]_5
65
RXC_D0-
66
RXC_D0+
67
VSS_8
68
RXC_D1-
69
RXC_D1+
70
VDDH[3V3]_6
71
RXC_D2-
72
RXC_D2+
73
VSS_9
74
R12K
75
VDDH[1V8]_2
76
R X
D _H
P D
77
R X
D _
5 V
78
R X
D _D
D C
_ D
A T
79
R X
D _D
D C
_ C
L K
80
RXD_DC-
81
R X
D _
D C
+
82
VDDH[3V3]_7
83
RXD_D0-
84
RXD_D0+
85
VSS_10
86
RXD_D1-
87
RXD_D1+
88
VDDH[3V3]_8
89
RXD_D2-
90
RXD_D2+
91
VDDC[1V8]_3
92
VSS_11
93
OUT_D2+
94
OUT_D2-
95
VDDO[1V8]
96
OUT_D1+
97
OUT_D1-
98
VSS_12
99
OUT_D0+
100
OUT_D0-
0
R539
0
R520
0.1uF
16V
C503
GND
AVRL161A1R1NT
VR508
GND
CEC_REMOTE
005:H8;005:H26;005:H17;005:R8;005:AM11
68K
R528
M M
B D
3 0
1 L
T 1
G
D500
+3.3V_ST
HDMI_CEC
001:C32
SSM6N15FU
IC501
3
DRAIN2
2
GATE1
1
SOURCE1
4
SOURCE2
5
GATE2
6
DRAIN1
0
OPT
R527
9.1K
R529
QJ41193-CFEE1-7F
JK502
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
QJ41193-CFEE1-7F
JK501
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
QJ41193-CFEE1-7F
JK500
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
For Only TDA9996 ES3
Net Labels changed for HDMI3
Net Labels changed for HDMI2
UI_HW_PORT1
VARISTORS(VR500/501/502/503/504/505/506/507) on lines-HPD1/2/3/4 are all options
UI_HW_PORT2
UI_HW_PORT3
in case HDMI Switch doesn
t support
ESD protection
SIDE_HDMI_PORT4
HDMI S/W For MSTAR Platform
EDID Pull-up
* HDMI CEC
C
2009
HDMI
Click on the first or last page to see other 32LH40 / 32LH41 (CHASSIS:LA92B) service manuals if exist.