Read LG 42LD320H (CHASSIS:LB0AW) Service Manual online
THERMAL
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.
JK1302
PEJ024-01
6B T_TERMINAL2
8 SHIELD_PLATE
7B B_TERMINAL2
5 T_SPRING
4 R_SPRING
7A B_TERMINAL1
6A T_TERMINAL1
3 E_SPRING
DBG_SW
NEC_DBG_TX
C1314
0.1uF
R1312
0
0
R1315
3.6K
+3.5V_ST
NEC_DBG_RX
R1326
0
0
+3.5V_ST
EXT_VOL+
R1313
3.6K
IC1307
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
IC1304
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
C1306
0.1uF
R1311
0
0
S7_DBG_RX
R1324
4.7K
IC1303
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
R1318
100
100
+3.5V_ST
S7_DBG_TX
+3.5V_ST
+3.5V_ST
UART_DBG_SW
IC1308
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
EXT_VOL-
R1304
100
100
UART_RX
S7_DBG_TX
S7_DBG_RX
C1323
0.1uF
R1338
100
100
UART_SW1
UART_TX
IC1310
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
IC1311
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
+3.5V_ST
C1337
1uF
50V
1uF
50V
C1338
0.47uF
50V
0.47uF
50V
SUBAMP_MUTE
R1344
10K
10K
EXT_L_AMP_IN
R1341
10K
10K
C1330
0.1uF
50V
SUBAMP_SD
C1329
0.1uF
50V
L1305
BLM18PG121SN1D
C1332
0.22uF
50V
0.22uF
50V
C1331
0.22uF
50V
0.22uF
50V
C1333
0.1uF
50V
0.1uF
50V
R1345
4.7K
4.7K
R1346
4.7K
4.7K
R1340
10K
10K
OPT
EXT_OUT_L
EXT_OUT_R
C1336
1uF
50V
1uF
50V
C1339
0.47uF
50V
0.47uF
50V
EXT_R_AMP_IN
IC1309
TPA3124D2PWPR
3
PVCCL_2
2
SD
4
MUTE
1
PVCCL_1
6
RIN
5
LIN
7
BYPASS
8
AGND_1
9
AGND_2
10
PVCCR_1
11
VCLAMP
12
PVCCR_2
13
PGNDR_1
14
PGNDR_2
15
ROUT
16
BSR
17
GAIN1
18
GAIN0
19
AVCC_1
20
AVCC_2
21
BSL
22
LOUT
23
PGNDL_1
24
PGNDL_2
R1343
10K
10K
OPT
R1335
100
100
JK1301
PEJ024-01
6B
T_TERMINAL2
8
SHIELD_PLATE
7B
B_TERMINAL2
5
T_SPRING
4
R_SPRING
7A
B_TERMINAL1
6A
T_TERMINAL1
3
E_SPRING
EXT_OUT_R
EXT_OUT_L
C1325
1uF
10V
1uF
10V
OPT
C1322
1uF
10V
10V
OPT
+12V
R1306
56K
56K
C1313
470pF
50V
470pF
50V
R1319
4.7K
4.7K
+3.5V_ST
+3.5V_ST
IC1305
MP5000DQ
3
ENABLE/FAULT
2
DV/DT
4
I-LIMIT
1
GND
5
NC
6
SOURCE_1
7
SOURCE_2
8
SOURCE_3
9
SOURCE_4
10
SOURCE_5
11
VCC
R1322
1K
1K
C1304
0.01uF
50V
0.01uF
50V
R1305
12.4K
12.4K
R1325
10K
10K
D1301
A1
C
A2
EXT5V_CTRL
R1302
100K
100K
OPT
IC1302
MP2305DS
3
SW
2
IN
4
GND
1
BS
5
FB
6
COMP
7
EN
8
SS
L1303
CB3216PA501E
R1317
1K
1K
C1309
0.1uF
50V
0.1uF
50V
EXT12V_CTRL
R1320
43
43
C1308
2700pF
2700pF
50V
EXT_12V
+12V
EXT_5V
R1308
10K
10K
C1312
22uF
16V
22uF
16V
C1303
0.47uF
25V
C1318
22uF
16V
22uF
16V
R1310
1K
1K
C1320
0.1uF
50V
50V
R1323
4.7K
4.7K
L1302
22UH
EXT_PWR_DET
L1304
CB3216PA501E
C1319
22uF
16V
22uF
16V
Q1302
2SC3875S(ALY)
E
B
C
C1317
1uF
16V
1uF
16V
Q1301
2SC3875S(ALY)
E
B
C
+3.5V_ST
IC1306
M41T81
3
VBAT
2
XO
4
VSS
1
XI
5
SDA
6
SCL
7
IRQ/FT/OUT/SQW
8
VCC
R1329
4.7K
CLOCK_SCL
R1321
1K
1K
R1328
22
22
C1316
2pF
50V
2pF
50V
C1315
2pF
50V
2pF
50V
C1321
0.1uF
16V
0.1uF
16V
R1327
22
22
CLOCK_SDA
RTC_INT
BA1301
BATTERY
1
2
NEC_RX
+3.5V_ST
R1342
100
100
R1347
100
100
C1335
0.1uF
IC1312
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
UART_SW2
UART_RX
MST_NEC_RX
IC1313
NLASB3157DFT2G
EAN38256201
ANALOG SWITCH
ON SEMICONDUCTOR
3
B0
2
GND
4
A
1
B1
6
SELECT
5
VCC
NEC_TX
UART_TX
MST_NEC_TX
R1339
100
100
DBG_RX
DBG_TX
DBG_RX
DBG_TX
S7_TXD
S7_RXD
R1330
100
100
Q1303
RT1P141C-T112
1
2
3
EXT_OUT_L
2SC3052
Q1304
R1348
2K
R1349
2K
2K
SUBAMP_MUTE
R1350
10K
+3.5V_ST
2SC3052
Q1305
C1342
0.1uF
0.1uF
EXT_OUT_R
+12V
C1311
0.1uF
50V
PSU
IC1301
MP4460DQ-LF-Z
PSU
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
11
EP_GND
D1302
MBRA340T3G
PSU
R1351
200K
200K
1/8W
1%
1%
PSU
C1301
3.3uF
50V
3.3uF
50V
PSU
R1354
100K
100K
PSU
C1310
0.1uF
50V
PSU
C1302
0.1uF
50V
0.1uF
50V
PSU
+24V
R1355
1.8K
PSU
R1356
22
PSU
L1301
22UH
22UH
PSU
C1307
150pF
50V
150pF
50V
PSU
R1357
150K
PSU
C1305
22uF
25V
22uF
25V
PSU
R1352
20K
1/16W
1%
PSU
R1353
270K
270K
1/16W
1%
1%
PSU
R1358
10K
10K
1/16W
1%
1%
PSU
+12V/+15V
L1307
CB3216PA501E
LIPS
R1359
0
0
OPT
R1360
0
0
OPT
+24V
L1308
BLM18PG121SN1D
C1340
100uF
25V
C1341
100uF
25V
C1334
68uF
35V
35V
C1324
1uF
50V
1uF
50V
C1326
1uF
50V
1uF
50V
X1301
32.768KHz
Old_seiko
L1310
22.0uH
L1309
22.0uH
22.0uH
X1301-*1
32.768KHz
New_TXC
EXT_SPK_CONTROL/DEBUG
UART SWITCH
B0 - A
B1 - A
L
H
SELECT CONNECTION
EXT_SPEAKER_AMP
Commercial
2009.10.08
EXT_SPEAKER
5V/12V EXT PowerOut
REAL TIME CLOCK
(For External power)
DC DC CONVERTER +12V
13
EAX62115501
EXT_SPEAKER_MUTE
close to pin
$0.21
Switching noise reducing [MPS recommend]
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