Sound - Toshiba 27AFX54 Service Manual

A B
8
FROM TUNER/STEREO
7
AUDIO_OUT_L
AUDIO_OUT_R
6
5
FROM CHROMA
P.CON+8V[B]
FROM/TO MICON
SDA
SCL
4
BBE_SW
TV_MUTE
FROM POWER
SOUND+B
3
P.CON+9V
GND
SOUND_GND
2
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
1
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
A B
G-9
C D
SOUND SCHEMATIC DIAGRAM
23 R302
2.7K 1/4W
R301
22
2.7K 1/4W
C309
0.039
B
4.1 1.9 4.6 NC NC 4.1 4.1
0
0
1 2 3 4 5 6 7
NC NC
PF1 AGC L IN PF2 PF3
Tone
AGC SURR
+
Control
MODE
control VCC R IN Vref
NC NC BB
32 31 30 29 28 27 26
0 0
NC NC
2.6 8.0 4.6 4.0 4.1
L301
22uH 0305
SOUND AMP IC
IC1001 AN5276
+
-
ATT.CONT.
+ ATT. +
RIPPLE
FILTER
CH1 CH2 CH2
NC GND NC MUTE
RF
IN IN OUT
1 2 3 4 5 6 7
0 0.2 0.2
NC 0 0.2 0 18.1
R1013
10K
R1009
MUTE
10K 1/4W
Q1001
KRC111SRTK
3.6
0
0
ATTENTION
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
(MAIN PCB)
4.1 0 4.4 4.2 NC NC 2.3 3.9 4.8
0 0
8 9 10 11 12 13 14 15 16
PF4 GND NC NC
LT LB BD VD L ONT
+
Volume
2.2K Balance
Control
/MUTE
+
4.8 4.8
1
RB RT BLD TD NC NC R OUT SDA SCL
25 24 23 22 21 20 19 18 17
0 0
4.2 4.3 3.5 2.3 NC NC 4.9 4.9
4.8
20
4.8 4.8
R303
100 1/4W
R304
100 1/4W
+
-
STAND CH1
GND VCC
-BY OUT
8 9 10 11 12
0.7 0 23.6 8.8 18.1
C1001
R1003
12K 16V 10 KA
C1002
R1004
16V 10 KA
12K
26
27
HS1001
763WAA0215
HS33V2
CAUTION
:LES PIECES REPAREES PAR UN ETANT :SINCE THESE PARTS MARKED BY
DANGEREUSES AN POINT DE VUE SECURITE CRITICAL FOR SAFETY,USE ONES
N'UTILISER QUE CELLS DECRITES DESCRIBED IN PARTS LIST ONLY
DANS LA NOMENCLATURE DES PIECES
E
F G
R305 C323 R307 C325
20K 0.0033 20K 0.033
B B
R313
4.8 4.8 4.8 4.8 4.8 0 8.9 8.9 1K
2 3 4 5 6 7 8 9 10
BBE
19 18 17 16 15 14 13 12 11
4.8 4.8 4.8 4.8 4.8 4.8 9.5 0
R306 C324 R308 C326
20K 0.0033 B 20K 0.033 B
25 24
SPEAKER
CP1001 CD1001
A2502WV2-4P CU14A001 SP1001
SG04H02BRA
4 4
8 OHM 5W
3 3 (L)
SPEAKER
2 2
SP1002
1 1
SG04H02BRA
8 OHM 5W
HEADPHONE JACK
J1001
MSJ-2000_AG
7
6
R1002
2
R1001 390 1/2W
3
390 1/2W
4
5
1
CAUTION: DIGITAL TRANSISTOR
ARE
F G
H
8
7
6
5
4
3
2
PCB010
TMC566
AUDIO SIGNAL(REC)
1
H
G-10