Read LG 50PT490B-SA / 50PT490B-SD (CHASSIS:PB11K) 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.
LGIT CAN TUNER
TUNER_IF_N
TUNER_IF_P
C1313
62pF
50V
62pF
50V
+5V_TU
Q1306
ISA1530AC1
TU_2INPUT_CTRL
E
B
C
TUNER_CVBS
R1301
3K
TU_SDA
IF_AGC_MAIN
R1311
100K
ISDB_IF_AGC
L1300
FE_BOOSTER_CTL
R1309
100
100
R1344
10K
TU_2INPUT_CTRL
R1310
0
C1318
20pF
50V
20pF
50V
C1308
4.7uF
10V
4.7uF
10V
TUNER_IF_N
Q1304
ISA1530AC1
E
B
C
R1332
82
82
C1319
20pF
50V
20pF
50V
C1307
4.7uF
10V
4.7uF
10V
TU1300
TDTR-T036F
TDTR-T036F
BR_TUNER
14
+B3[3.3V]
13
+B2[1.2V]
5
NC_2
12
GND
11
VIDEO
2
BST_CTL
10
NC_4
4
NC_1[RF_AGC]
1
RF_S/W_CTL
17
DIF_1[N]
9
SIF
8
NC_3
3
+B1[5V]
16
IF/AGC
7
SDAT
6
SCLT
15
RESET
18
DIF_2[P]
19
SHIELD
RF_SWITCH_CTL
+3.3V
C1300
0.1uF
TUNER_IF_P
Q1307
2SC3052
TU_2INPUT_CTRL
E
B
C
R1322
1K
1K
EXTERNAL_DEMOD
R1343
10K
TU_2INPUT_CTRL
C1325
100pF
50V
R1300
3K
C1311
0.01uF
25V
0.01uF
25V
TU_2INPUT_CTRL
R1334
0
0
+3.3V
+5V_TU
C1312
62pF
50V
62pF
50V
L1303
MLB-201209-0120P-N2
TU_2INPUT_CTRL
Q1305
ISA1530AC1
E
B
C
TUNER_RESET
+5V_TU
C1306
0.1uF
R1323
1K
1K
INTERNAL_DEMOD
C1317
0.1uF
16V
0.1uF
16V
INTERNAL_DEMOD
R1325
4.7K
4.7K
C1301
100uF
16V
16V
+3.3V
R1329
470
TU_SCL
+5V_TU
R1324
0
READY
L1305
270nH
R1330
220
TU1300-*1
UDA55AL
UDA55AL
USA/KOR_TUNER
14
+3.3V
13
+1.2V
5
AS
12
GND
11
VIDEO
2
NC_2
10
NC_3
4
NC[RF_AGC]
1
NC_1
17
DIF_1
9
SIF
8
NC(IF_TP)
3
+B[+5V]
16
IF_AGC_CNTL
7
SDA
6
SCL
15
RESET
18
DIF_2
19
SHIELD
C1304
4.7uF
10V
4.7uF
10V
C1303
0.1uF
L1304
270nH
C1316
0.1uF
16V
0.1uF
16V
EXTERNAL_DEMOD
C1305
1200pF
50V
1200pF
50V
TU_2INPUT_CTRL
TUNER_SIF
L1302
C1310
0.1uF
16V
C1314
1200pF
50V
1200pF
50V
TU_2INPUT_CTRL
C1309
1200pF
50V
R1321
2.2K
2.2K
TU_2INPUT_CTRL
C1302
0.1uF
16V
TU_2INPUT_CTRL
+1.2V_DE
L1301
R1331
220
13 14
KOREA/BRAZIL CAN TUNER
< KOREA / BRAZIL TUNER >
Close to the tuner
Close to the tuner
CH_6
Close to the tuner
EAX63425902(5)
2010.10.21
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