Read LG 37LH40 / 37LH41 (CHASSIS:LA92G) 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.
+3.3V
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
470K
R1298
22
R1265
3.3K
R1274
470K
R1246
0.1uF
C1231
SIDEAV_CVBS_IN
001:D26
+5V_GENERAL
75
R1241
OPT
C1218
220
R1299
0.1uF
16V
C1228
5.6V
D1212
ADMC5M03200L
ZENER
100pF
50V
C1251
PC_R_IN 001:R31
100K
R1273
OPT
C1216
COMP2_R_IN
001:R33
1K
R1240
0.1uF
16V
C1234
BG2012B080TF
L1218
75
R1238
DBG_TX
47pF
50V
C1243
AV_CVBS_DET
001:AR23
COMP1_R_IN
001:R32
12K
R1256
R1256
18pF
50V
C1222
+5V_GENERAL
+3.3V_ST
470K
R1206
5.6V
D1231
ADMC5M03200L
ZENER
5.6V
D1230
ADMC5M03200L
ZENER
30V
D1207
ADUC30S03010L
ZENER
SIDEAV_R_IN
001:R33
100
R1281
12K
R1263
0
R1232
COMP2_PR
001:D31
BG2012B080TF
L1206
DSUB_DET
30V
D1209
ZENER
ADUC30S03010L
COMP1_L_IN
001:R32
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
100pF
50V
C1240
BG2012B080TF
L1208
30V
OPT
D1236
ADUC30S03010L
0
R1276
4.7K
R1279
R1279
5.6V
D1213
ADMC5M03200L
ZENER
220
R1302
COMP2_DET
001:AR23
ENKMC2838-T112
D1223
A1
C
A2
0
R1305
AV_CVBS_IN
001:D26
5.6V
D1214
ADMC5M03200L
ZENER
DSUB_R
001:D29
+3.3V
5.6V
OPT
D1224
ADMC5M03200L
10K
R1277
ISP_TXD
001:AB27;001:AR31
12K
R1293
1K
R1254
1000pF
50V
C1238
30V
D1216
ADUC30S03010L
ZENER
470K
R1245
OPT
D610
0.33uF
C1229
2SC3052
Q1200
E
B
C
30V
D1226
ADUC30S03010L
ZENER
30V
D1227
ADUC30S03010L
ZENER
10K
R1258
AV_R_IN
100
R1282
220pF
50V
C1239
+5V_ST
5.6V
D1220
ADMC5M03200L
ZENER
5.6V
ZENER
D1244
ADMC5M03200L
0 OPT
R1268
10K
R1237
100pF
C1219
1K
R1271
100
OPT
R1285
1000pF
50V
C1237
12K
R1304
100pF
50V
C1241
10K
R1252
470K
R1297
30V
D1218
ADUC30S03010L
ZENER
5.6V OPT
D1234
ADMC5M03200L
10K
R1300
10K
R1205
0.1uF
C1233
30V
D1245
ADUC30S03010L
ZENER
1000pF
50V
C1221
KCN-DS-1-0089
JK1201
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
5.6V OPT
D1235
ADMC5M03200L
5.6V
D1229
ADMC5M03200L
ZENER
47pF
50V
C1242
+3.3V
0
R1307
COMP2_Y
001:D31
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
470K
R1289
5.6V
D1221
ADMC5M03200L
ZENER
5.6V
D1243
ADMC5M03200L
ZENER
12K
R1255
R1255
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
DSUB_B
001:D28
30V
D1228
ADUC30S03010L
ZENER
0.1uF
C1230
470K
R1244
5.6V
OPT
D1222
ADMC5M03200L
BG2012B080TF
L1217
75
R1286
4.7K
R1249
10K
R1301
SIDEAV_DET
001:AR23
470K
R1247
0.1uF
C1232
30V
D1215
ADUC30S03010L
ZENER
10K
R1204
12K
R1210
0.1uF
50V
C660
100
R1269
12K
R1264
22
R1257
VGA_EEPROM_WP
001:AR22
100pF
50V
C1224
470K
R1208
AT24C02BN-10SU-1.8
IC1200
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
SPDIF_OUT
001:W29
30V
OPT
D1237
ADUC30S03010L
F i b e r O p t i c
JST1223-001
JK601
1
GND
2
VCC
3
VINPUT
4
FIX_POLE
5.6V
D1211
ADMC5M03200L
ZENER
0
R1216
DSUB_G
001:D29
18pF
50V
C1223
47pF
50V
C1252
470K
R1290
10K
R1211
1K
R638
10K
R1291
3.3K
OPT
R1218
+3.3V
100pF
50V
C1250
ISP_RXD
001:AB27
5.6V
ZENER
D1225
ADMC5M03200L
10K
OPT
R1217
75
R1243
10K
R1270
+5V_ST
DSUB_HSYNC
001:D29
4.7K
R1278
R1278
30V
D1219
ADUC30S03010L
ZENER
2SC3052
OPT
Q1201
E
B
C
0
R1233
PC_L_IN
001:R32
10K
R1262
220pF
50V
C1235
1K
R1212
5.6V
D1242
ADMC5M03200L
ZENER
0
R1275
10K
R1251
75
R1288
+3.3V
COMP1_PR
001:D28
100pF
50V
OPT
C1206
+5V_ST
4.7K
R1253
DSUB_VSYNC
001:D29
12K
R1303
10K
R1248
75
R1242
KCN-DS-1-0088
JK1203
1
2
3
4
5
6
7
8
9
10
OPT
C1217
10K
R1259
BLM18PG121SN1D
L1209
1K
R1283
IR
30V
D1210 ADUC30S03010L
ZENER
10K
R1292
12K
R1294
COMP1_PB
001:D27
100K
R1272
30V
D1208
ZENER
ADUC30S03010L
100pF
50V
C1225
COMP1_Y
001:D27
COMP2_PB
001:D31
75
R1287
75
1%
R1215
COMP2_L_IN
001:R33
100
OPT
R1284
BG2012B080TF
L1207
12K
R1207
DBG_RX
1000pF
50V
C1220
30V
D1217 ADUC30S03010L
ZENER
100pF
OPT
C1227
SIDEAV_L_IN
001:R33
AV_L_IN
75
R1235
75
R1236
75
R1234
AV
COMPONENT1/2,AV1
SIDE_AV
TxD
Serial Port
PC AUDIO
RS-232C
COMPONENT2
COMPONENT1
RxD
male
R,G,B PC&DDC
SPDIF OPTIC JACK
UNER
C
2009
SCHEMATIC DIAGRAM
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