Sound Amp Schematic Diagram - Toshiba 19DV550P Service Manual

A B
8
7
6
FROM JACK OUT
LOUT_SOUND
ROUT_SOUND
5
FROM/TO POWER
FILTER_MUTE
SOUND+B
4
SOUND_GND
W030
GND
AT+5.8V
POWER_ON_H
3
2
NOTE:THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
1
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
H-39
C

SOUND AMP SCHEMATIC DIAGRAM

SOUND AMP IC
IC301 LA42052-E
Ripple
IN1 GND IN2 STB P.P Vcc OUT2
Filter
1 2 3 4 5 6 7
7.4 1.6 0 1.6 1.6 10.3 14.0 7.4
R317
R316 220K
220K
R302
6.8K 1/4W
5.8
R314
5.8
5.8
1.6 SW 470 1/4W
Q301
KTA1504S_Y_RTK 3.0
0 SW
Q302
KRC102SRTK
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.
C
D E
(POWER PCB)
NC GND NC OUT1 NC
8 9 10 11 12 13
NC 0 NC 7.4 NC
22
W823
R304 R306
2.2K 2.2K
R305 R307
W820
23
2.2K 2.2K
B303
HCB3216KF-391T20
W824
W827
HS301
W803
763WSA0064
CAUTION
:SINCE THESE PARTS MARKED BY
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D E
F G
R308
680 1/4W
R309
B308
HCB3216KF-391T20
680 1/4W R310 B307
680 1/4W HCB3216KF-391T20
R311
680 1/4W
ATTENTION
ARE :LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
F G
H
8
7
6
HEADPHONE JACK
J301
PJ-364H
5
L
4
2
3
6
R
7
1
5
SPEAKER
CD301
E8142401
SP301
SP OUT L 4 4
S0308F01
GND 3 3
SPEAKER
GND 2 2
SP OUT R 1 1
SP302
S0308F01
4
3
2
PCB240
CEG362
CAUTION: DIGITAL TRANSISTOR
1
H
19DV550P/19DV551P
H-40