Panasonic TH-42PX20U-P Service Manual page 186

A
B
C
D
E
TH-42PX20U-P
TA and TB-BOARD Schematic Diagram
1
TA-BOARD TNPA2818
!
+9V
+30V
+5V
1st TUNER
TNR201
!
ENG36619G
1
C210
0.1
2
3
C201 R201 100
SCL2_1 TV1V
16V
100/16V 4
R202 100
SDA2_1
5
LC202
ELKE103FA
6
J0HABB000003
5V AGND1
1 3
7
2 4 I2C
TP201
8
BTL_30V
9 C208
C207 C211
100P[JC]
10V 0.1
10 470 VIDEO
11
LC201
C205 C212
ELKE103FA
50V
J0HABB000003 12
4.7 0.1
9V
1 3
13
C203 TP202
C213
2 4
35V
0.1
47/35V 14
R206
TP203
JS201
15
16 T201
ETC___PT
OUT TP204
17
TP205
18
C202
50V
0.22 19
C204
G0B600G00001
50V
2R2/50V 20 TF0804V-04P-02
AFC1
21
22
23
24
25
26
A201
27
2 3
TB-BOARD TNPA2929
!
C251
TO
16V
100/16V
H-BOARD
T11
(H11)
1
TV1
2
NC
3
MPXIN
4 5V
GND
5
GND
TP251
BTL_30V
6
GND
C255
SCL2_1 7
SC2 50V
4R7/50V
SDA2_1 8
SD2
LC251
ELKE103FA
J0HABB000003
TO
H-BOARD 1 3
T12
2 4
(H12)
1
+5V
2
30
3
9V
4
GND
5
GND
6
GND
7
AFC1
8
GND
4
+9V
+30V
+5V
2nd TUNER
!
TNR251
ENG36620G
C259
1
0.1
2
3
R251 100 TV2V
SCL2_2
4
R252 100
SDA2_2
5
LC252
ELKE103FA
J0HABB000003 6
AGND2
1 3
7
2 4
I2C
8
9
C257
C260 C258 SCL2_2
C261
10V 0.1 ECJ1VC1H101J VIDEO
0.1
10
470
SDA2_2
11
12
9V
TP252
13
C253
C262
35V
0.1
47/35V 14
TP253
15
JS251
16
TP254
17
TP255
18
C252
50V
0.22 19
C254
T251
50V
2.2 20 ETC___PT
AFC2
G0B600G00001
21
TF0804V-04P-02
22
23
24
25
26
A251
27
5 6
TO
H-BOARD
T21
(H21)
1
TV2
2
NC
3
GND
4
GND
5
GND
6
GND
7
SC2
8
SD2
TO
H-BOARD
T22
(H22)
1
+5V
2
30
3
9V
4
GND
5
GND
6
GND
7
AFC2
8
GND
TH-42PX20U-P
TA and TB-BOARD Schematic Diagram
7 8