DOWNLOAD LG 42CL40-UA (CHASSIS:LA92B) Service Manual ↓ Size: 5.14 MB | Pages: 45 in PDF or view online for FREE

Model
42CL40-UA (CHASSIS:LA92B)
Pages
45
Size
5.14 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
42cl40-ua-chassis-la92b.pdf
Date
PREV: LG 42CL11-UA (CHASSIS:LA92A) Service Manual

LG 42CL40-UA (CHASSIS:LA92B) Service Manual ▷ View online

- 33 -
MAIN IC => POWER MANAGEMENT
+5V
M
P
2212
D
N
+1.8V
_MEMC
M
P
2305
D
S
+3.
3V
Ursa1/LGE7329
Ursa1/LGE7329
L
715
FRC IC => POW
E
R
 MANAGEMENT
A
PE8953
+1.
2
6
V
_MEMC
L
714
+3.3V
_MEMC
EN
M
S
D
3158
M11
RES
ET
+3.
3V
_
S
T
K
6
~
J11
A
V
DD
_DDR
1~7
L9
A
V
DD_MEMPLL
E5
~
H
6
VDDC_1~5
L
803
L
800
MEMC_RES
ET
R
248
:100
IC707
IC704
IC708
IC100
IC801
+12
V
M
P
2212
EN
IC706
+
5
V_
EX
T
S
I4925
EN
Q706
PO
WE
R
_
O
N
/O
FF
, 
PO
W
E
R
_
O
N
_
D
E
L
A
Y
EN
L
709
+5V
_G
ENER
A
L
EN
+
5
V_
ST
- 34 -
300
510
500
120
121
122
200
200T
200N
800
900
901
801
802
803
804
805
806
550
530
810
521
520
540
820
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.
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
75
R1286
1K
R1283
0
R1232
12K 
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
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
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
100
OPT
R1284
47pF
50V
C1243
DBG_RX
0
R1276
220pF
50V
C1235
0.1uF
C1230
4.7K 
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
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