Panasonic TH-42PX20U-P Service Manual page 391

TA
Tuner Board
TNR201
1st TUNER
VIDEO
18
AUDIO
14
S_CLOCK
4
S_DATA 5
AFC1
16
TB
Tuner Board
TNR251
2nd TUNER
VIDEO 18
S_CLOCK 4
S_DATA 5
AFC2
16
JK002
Y1
Y
C1
VIDEO1
C
IN
S1
V1
V
L1
L
R1
R
Y2
Y
C2
C
S2
VIDEO2
IN
V2
V
L2
L
R2
R
JK001
V
PROG
L
OUT
R
JK003
Y1
Y1
PB1
PB1
COMPONENT1 PR1
PR1
IN
L1
L1
R1
R1
JK004
Y2
Y2
PB2
PB2
COMPONENT2 PR2
PR2
IN
L2
L2
R2
R2
TH-42PX20U-P
TA, TB and H-BOARD BLOCK Diagram
H
Rear AV Terminal,Input Select,Audio Board
IC4205
T11 H11
MTS
TV1V
1 1
MPX IN MPX IN L OUT
3 3 14 21
R OUT 22
SCL2 SCL
7 SCL2 7 18
SDA2
8 SDA2 8 19 SDA
SCL2
T12 H12
SDA2
AFC1
7 7
T21 H21
TV2V 1
1
7 SCL2 7 SCL2
SDA2
8 SDA2 8
T22 H22
AFC2 7
7
Q4203
VAO MUTE L
Q4202
IC4204
VAO MUTE R
VAO
1 L
7 R
4
8
AUX0 AUX1
13
L L PROHIBIT
L H GEQ ON 2
H L
THROUGH
H H PROHIBIT 12
10 11
IC4202
SWITCH
IC4301
INPUT SELECT
60 V 14
S3
TV1
L
59 12
C3
IN
R
61 11
R3
AV3
IN
10
Y3
9
L3
33 SCL 8
V3
SDA
34
28 S1
26 C1
VYOUT1
56
25 R1
COUT1
AV1 MAIN 58
IN OUT
24 Y1
LOUT1
52
23 L1
ROUT1
54
22 V1
39
SUB VYOUT2
TV2
V
63 OUT
COUT2 37
IN
S2
21
C2
19
MONI.
R2 VOUT Q4303
18 53
AV2 OUT
MONITOR
IN
Y2
17
VIDEO OUT
L2 SD Y
16 SD 3
IN
V2 SD C
15 5
IC4203
BBE VIVA
L AMP
LOUT
Q4206 L IN
3 8
R AMP
ROUT
5 Q4205 23 R IN 30
5 Q4201 17 AUX1
BBE
3 4 TONE L
LOUT
6
BBE
9 27 TONE R 26
ROUT
AUX0
Q4204 18
IC4201
EQUALIZER
L IN
1 9 LOUT 7
12 ROUT R IN 14
H1
408
409
309
IC4302
310
YPbPr SELECT 210
109
74 Y1 DVI Y 14
415
DVI PB
75 PB1 16
116
DVI PR
76 PR1 DTV1 DVI 18
316
IN IN
DVI L
78 L1 20
217
DVI R
79 R1 21
417
VY1
57
MAIN YOUT1 46 107
C1
59
IN
PBOUT1
44 307
L1
63
PROUT1
MAIN 43 407
R1
64
OUT
LOUT1
41
ROUT1
40
66 VY2
SUB
IN
67 C2
YOUT2
38 405
SUB
PBOUT2
36 206
OUT
PROUT2
35 306
5 Y2
7 PB2
9 PR2 DTV2
IN
11 L2
204
12 R2
304
111
211
104
103
303
1
5
TO DG1
S3
V3
C3
R3
L3
Y3
DVI Y
DVI PB
DVI PR
DVI L
DVI R
MAIN Y
MAIN PB
MAIN PR
SUB Y
SUB PB
SUB PR
AFC1
AFC2
JPEG Y
JPEG C
VAO MUTE
AUDIO L
AUDIO R
TH-42PX20U-P
TA, TB and H-BOARD BLOCK Diagram