LG 50PJ350 Service Manual page 28

TU1300
TDTR-T035F
RF_S/W_CTL
1
BST_CTL
2
+B1[5V]
3
NC_1[RF_AGC]
4
NC_2
5
SCLT
6
SDAT
7
NC_3
8
SIF
9
NC_4
10
VIDEO
11
GND
12
+B2[1.2V]
13
+B3[3.3V]
14
RESET
15
IF/AGC
16
DIF_1[N]
17
D I F _ 2 [ P ]
18
19
SHIELD
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.
AN TUNER
Copyright © 2010 LG Electronics Inc. All rights reserved.
Only for training and service purposes
< LGIT CAN H/N TUNER >
RF_SWITCH_CTL
C1302
0 . 1 u F
16V
P u l l - u p c a n ' t b e a p p l i e d
because of MODEL_OPT_2
+5V_TU
L1302
C1308 C1300 C1301
C1309
1200pF 4 . 7 u F 0 . 1 u F 22uF
10V 16V
50V
C1305 C1314
1200pF
1200pF
50V 50V
+1.2V_DE
L1301
+3.3V
C1307
L1300
4 . 7 u F C1306
10V
0 . 1 u F
C1304
4 . 7 u F C1303
10V
0 . 1 u F
TUNER_IF_N
TUNER_IF_P
+5V_TU
L1303
MLB-201209-0120P-N2
R1343
10K
E
R1321
Q1306
2.2K
ISA1530AC1
B
C
R1344
C
10K
Q1307 B
FE_BOOSTER_CTL
2SC3052
C1311
E
0 . 0 1 u F
25V
+3.3V
R1318
R1320
3K
3K
100 R1315
TU_SCL
100 R1316
TU_SDA
C1312 C1313
47pF 47pF
50V 50V
+3.3V
R1311
R1309
100K
100
TUNER_RESET
C1310
0 . 1 u F
16V
R1322
1K
C1316 ISDB_IF_AGC
0 . 1 u F
16V
C l o s e t o t h e t u n e r
+5V_TU
R1329
470
E
C1325
100pF 50V B
R1325 Q1304
C
4.7K
CH_6
+5V_TU
R1330
READY 100
READY
E
B Q1305
ISA1530AC1
C
READY
LGIT CAN TUNER
R1332
82
TUNER_SIF
ISA1530AC1
R1334
82
TUNER_CVBS
1 3 1 3
LGE Internal Use Only