Tuner Circuit Diagram - LG XA66 Service Manual

5. TUNER CIRCUIT DIAGRAM

12 TUNER BLOCK Option
1.AM/FM NO RDS= KST-MW004MV1-S65PW (TUN401)
2.FM ONLY = KST-MK000FH0-806A (TUN402)
3.FM WITH RDS=KST-MK100FH1-806A (TUN402)
11
ANT ANT
10 FM ANT FM ANT
R710 R710 C101 C101
0R 0R 30pF 30pF
D703 D703 R707 R707
9
KDS226 KDS226 270NH 270NH
8
IC906 IC906
7
T-SCL
T-SDA
6
T3V3
TU401 TU401
TUNER PACK TUNER PACK
5
T-RDS FB705 FB705
8
GPIO2 RDS-IN
300RH 300RH
T-RES FB505 FB505
7
TU-RESET
RST
300RH 300RH
6
4 /SEN
T-SDA FB703 FB703 R583 R583
5
TU-SDA
SDIO
300RH 300RH 1K 1K
T-SCL FB702 FB702 R582 R582
4
SCLK TU-SCL
300RH 300RH 1K 1K
T5V
3
+5V
3 TU-R FB704 FB704 C102 C102 R100 R100
2
ROUT TUN-R
300RH 300RH 0.1uF 0.1uF 39K 39K
TU-L FB510 FB510 C103 C103 R101 R101
1
LOUT
TUN-L
300RH 300RH 0.1uF 0.1uF 39K 39K
2
1
A B C D
Optional
T-RES
T-RDS
T3V3
TUNER MODULE TUNER MODULE
R713 R713
1K 1K
R712 R712
C709 C709 33K 33K
TUN-L
1uF 1uF
C710 C710 Q703 Q703
2
1uF 1uF 9014 9014
C711 C711
0.1uF 0.1uF
C707 C707 R708 R708
220uF/10V 220uF/10V 470R 470R
ZD704 ZD704 1 2
3V3 3V3
R744 R744
82R 82R
+M5V
Q504 Q504
8550 8550
3 1
FB720 FB720
300RH 300RH
+ + R599 R599
2
100K 100K
C105 C105 C104 C104
47uF/10V 47uF/10V 0.1uF 0.1uF
R571 R571
2K2 2K2
Q508 Q508 R596 R596
2
TU-POWER
9014 9014 4K7 4K7
E F G H
+M5V
Q407 Q407
9014 9014
Q702 Q702
2301A 2301A
R544 R544
100K 100K
R714 R714
1K 1K
R711 R711
33K 33K
TUN-R
Q704 Q704
9014 9014
Q712 Q712
2
9014 9014
R709 R709 XC6214-3.3V XC6214-3.3V
470R 470R
3
in
+ +
EC701 EC701
1000uF/10V 1000uF/10V
+M12V
R520 270R R520 270R
1 3
Q503 Q503
+ + 8550 8550 R578 270R R578 270R
C419 C419 R523 R523
2
100uF/16V 100uF/16V 100K 100K R575 270R R575 270R
R584 270R R584 270R
R521 R521
2K2 2K2
R547 R547 Q502 Q502
2
FAN-CONTROL
4K7 4K7 9014 9014
I J K L M
3-33 3-34
CD5V
1 3
Q510 Q510
B772 B772 + +
C556 C556
2
220uF/16V 220uF/16V
R580 R580
470R 470R
R573 R573
2
CD-POWER
2K2 2K2
R568 R568
1M 1M
USB5V
+ +
C594 C594 C512 C512
220uF/10V 220uF/10V 0.1uF 0.1uF
R595 R595
100K 100K
R567 R567
2
USB_PWR
10K 10K
IC501 IC501 M3V3
2
out
4
out
+ +
C531 C531 C534 C534
100uF/10V 100uF/10V 0.1uF 0.1uF
DC FAN
CN502 CN502 PN502 PN502
TO FAN TO FAN TO MAIN TO MAIN
1 1
2 2
C516 C516
0.1uF 0.1uF
N O P Q
+12V
(2)
+12V
-12V
-12V (2)
+5V
(2)
+5V
CN703 CN703
+M5V 300RH 300RH FB709 FB709 +5V
1
MGND 300RH 300RH FB708 FB708 GND
2
+M5V 300RH 300RH FB714 FB714 +5V
3
MGND 300RH 300RH FB713 FB713 GND
4
+M12V 300RH 300RH FB712 FB712 +12V
5
MGND 300RH 300RH FB707 FB707 GND
6
MGND 300RH 300RH FB706 FB706
7
+ +
FAN FAN
A A
DC FAN 12V DC FAN 12V
- -
Tuner
2011. 01. 20
Rev 1.1
R S T