Panasonic TH-P42A20M Service Manual page 54

11.14. A-Board (9/13) Schematic Diagram
A-BOARD (9/13)
!
TUNER_SW1
TO 1/13
TUNER_SW2
73 74
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R8339
220
SUB5V
TUNER
L8302
J0JGC0000070
C8324
*TU8301
6.3V !
ENG39F02GF
220u
NC
1
BB
2
RF-AGC_Monitor R8350 TU_RFAGC
C8349
50V 1000p S
3
C8350
<
16V 0.1u
C8351 NC
50V 1000p 5
BT_Monitor R8405
C8352
16V 0.1u 6 220
R8402 R8403
C8353
10k
10k
10V 1u
C8354 NC
L8315
10V 1u 8
J0JCC0000269
C8355 SIF-OUT TU_SIF
10V 1u 9
+B
10
Video-out VIDEO_OUT
11
R8326
100 R8410 TP8305
SCL
13 R8325 S
TP8304
SDA 0 R8411
*R8377 14 S
4.7k AFT_out AG_RF_AFT
*Q8309
15
DSC2001S0L SW1
*R8400 16
10k
VB
17
*R8388
NC
*Q8310 4.7k
19
DSC2001S0L SW2
*R8401
20
10k
IF_Monitor
21
75 76
SUB5V
R8335
R8307
AG_RF_AFT 100
RF_AFT TO 1/13
SUB5V
C8370
16V
0.1u
R8330
2.2k
L8306
TP8302
J0JHC0000045
RF_V
RF_V TO 6/13
C8312
R8341
50V
820 R8332
180p
TU_SIF 22
R8407
Q8308
DSA2001S0L SUB5V
R8331
2.2k
R8308
100 Q8307
TU_RFAGC
B1ABCF000231
R8322
R8324
4.7k
100
RFAGC TO 1/13
R8323
33k
SUB5V
R8404
820
R8306 C8305
R8305 R8321 R8314
50V
100 4.7k 2.2k 33k
220p
D8300
B0ACCJ000048
Q8311 Q8302 Q8303
R8309
DSA2001S0L C8304 DSA2001S0L B1ABCF000231
10V 75
1u
C8306
R8315
50V
22k
Q8301 1500p
DSA2001S0L
R8312
4.7k
C8308
C8303 R8310 C8307
R8311 R8313
50V 50V 16V
470k 10k 10k
1000p 2200p 0.1u
SUB3.3V
Q8312
B1CBHD000002
Q8313
B1CBHD000002
77 78
54
C8313 R8337
16V
1k C8315
0.1u
50V
R8302
560 1000p
SIFIN TO 1/13
R8336
22
Q8306
B1ADCE000022
0
R8318
22k
TO 1/13
Q8304 TV_SYNC/TUNERBOX_SEL
R8320
B1ABCF000231
100
R8316
47k
R8317
R8319
47k
39k
24KEC_I2CCLK0_TU
TO 10/13
24KEC_I2CDATA0_TU
C8302
16V
R8303 R8342
0.1u
1k 1k
IFAGC TO 1/13
C8328
16V
0.1u
79 80 81