JVC TV-20F242 Service Manual page 71

[OPERATION PCB & AV PCB CIRCUIT DIAGRAM]
A B
8
FROM/TO I/O
CD702 (CP4202)
CH2B032A
1 FRONT VIDEO IN
2 GND
3 FRONT AUDIO IN L
4 SOUND GND
5 SOUND OUT L
6 SP OUT L
7 GND
8 FRONT A IN R
9 NC
7
10 SOUND OUT R
11 SP OUT R
SPEAKER
CD356 CH12440A
1 SP OUT L+
2 SP OUT L-
SP352
P-300S-2
8OHM
6
FROM/TO I/O
CD757_1 (CP4201) CH2A012A
1 REMOCON OUT
2 GND
5
3 AT+5V
4 NC
5 NC
6 KEY A
7 T-REC LED
8 REC LED
9 KEY B
10 ON TIMER LED
4
SPEAKER
CD355 CH12435A
1 SP OUT R+
2 SP OUT R-
SP351
P-300S-2
8OHM
3
FROM/TO OPERATION
CP704 (CD704)
8283_1312_00_000
1 FRONT VIDEO IN
2 GND
3 FRONT AUDIO IN L
4 SOUND GND
5 SOUND OUT L
6 SP OUT L
7 GND
8 FRONT A IN R
9 SOUND OUT R
2
10 SP OUT R
11 EARPHONE L
12 EARPHONE R
13 NC
1
NOTE:
THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
A B
No.51768
C
OPERATION SCHEMATIC DIAGRAM
38
W809
W806
39
R778 R771
820 1/4W 1K 1/4W
R775 R776
820 1/4W 1K 1/4W
(AV PCB)
W812
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
TV-20F242 TV-20F242
D E
(OPERATION PCB)
R772 R773 R774
1.5K 1/4W 2.7K 1/4W 5.6K 1/4W
0
3 GND
R777
4.8
2 B+
4.8
1.5K 1/4W
1 Vout
OS753
PIC-28143TC5
R702
75 1/4W
J701_1
JPJ1187-010010
J351
HTJ-035-28A
W813
1
5
4
3
2
6
7
CAUTION: SINCE THESE PARTS MARKED BY ARE
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D E
2-35 2-36
F G
CD704 (CP704)
FRONT VIDEO IN
FRONT AUDIO IN L
SOUND OUT L
FRONT A IN R
SOUND OUT R
C353 R352
C352 R351
16V KA 47 220 1/2W
16V KA 47 220 1/2W
NC
W807
R754
270 1/4W
TUNER VIDEO SIGNAL
AUDIO SIGNAL
PCB250
TEXA46
ATTENTION: LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
F G
No.51768
H
8
FROM/TO AV
CH2D001A
1
GND 2
3
SOUND GND 4
5
SP OUT L 6
GND 7
8
9
7
SP OUT R 10
EARPHONE L 11
EARPHONE R 12
13
6
5
PCB030
TEXA45
4
3
2
1
H