Toshiba 20AF43 Service Manual page 26

A B
8
FROM/TO TUNER/STEREO
SW_AUDIO_L
7
22
SW_AUDIO_R
6
FROM/TO CHROMA
5
P.CON+8V[B]
FROM/TO COMBI FILTER
GND
FROM/TO MICON
SDA
SCL
4
BBE_SW
TV_MUTE
FROM/TO POWER
SOUND+B
GND
3
P.CON+12V
SOUND_GND
W858
2
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
G-9
C
SOUND SCHEMATIC DIAGRAM
23 R302
R301 2.7K 1/4W
2.7K 1/4W
C309
0.039
B
NC NC
3.9 1.7 3.0 0 0 3.9 3.9 3.9 0 4.0
1 2 3 4 5 6 7 8 9 10
NC NC PF4 GND
PF1 AGC L IN PF2 PF3 LT
Tone
Volume 2.2K
AGC SURR
+
Control
Control
MODE
control VCC R IN Vref NC NC
BB RB RT BLD
32 31 30 29 28 27 26 25 24 23
2.3 7.9 4.5 4.0 0 NC 0 NC 4.0 4.0 4.4 3.0
L301
100uH 0305
SOUND AMP IC
IC1001 AN5276
+
-
ATT.CONT.
+ ATT. +
VOL
RIPPLE
FILTER
CH1 CH2 CH2 STAND
NC GND VOL MUTE GND VCC
RF
IN IN OUT
1 2 3 4 5 6 7 8 9 10
0 0.2 16.0 0 0.2 9.6 0.7 3.7 0 16.5
NC
W803
R1013
10K
R1009
MUTE
10K 1/4W
Q1001
KRC111SRTK
3.6
0
0
CAUTION
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D E
(MAIN PCB)
NC NC
4.0 0 0 2.0 2.9 4.0
11 12 13 14 15 16
NC NC
LB BD VD L ONT
R305 C323
20K 0.0033
+
B
Balance
/MUTE
+
4.8 4.8 4.8 4.8
1 2 3
NC NC
TD R OUT SDA SCL
22 21 20 19 18 17
2.0 0 0 4.0 3.5 3.5
NC NC
20 19 18
4.8 4.8 4.8 4.8
R303
100 1/4W
R306
R304
20K C324
0.0033 B
100 1/4W
+
-
25 24
CH1
-BY OUT
11 12
12.7 15.2
C1001_1
R1003
15K
50V 1 KA
R1004 C1002_1
15K
50V 1 KA
26
27
HS1001
763WAA0215
ATTENTION
:SINCE THESE PARTS MARKED BY ARE :LES PIECES REPAREES PAR UN
CRITICAL FOR SAFETY,USE ONES DANGEREUSES AN POINT DE VUE SECURITE
DESCRIBED IN PARTS LIST ONLY N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
D E
F G
R307 C325
20K 0.033
B
R313
1K 1/4W
4.8 4.8 4.8 0 8.9 8.9
8.9
4 5 6 7 8 9 10
BBE
17 16 15 14 13 12 11
4.8 4.8 4.8 4.8 9.5 0
R308
20K C326
0.033 B
SPEAKER
CP1001
A2502WV2-4P SP1001
SG05K07BRA
4 4
8 OHM 5W
3 3 (L) 2.5W
SPEAKER
2 2
SP1002
1 1
SG05K07BRA
8 OHM 5W
CD1001
2.5W
CU14411A (R)
HEADPHONE JACK
J1001
MSJ-2000
7
6
R1002
2
R1001 270 1/2W
3
270 1/2W
4
5
1
CAUTION: DIGITAL TRANSISTOR
ETANT
F G
H
8
7
6
5
4
3
2
PCB010
TMC559
1
H
G-10