Table of Contents
Advertisement
[MAIN PCB SOUND SCHEMATIC DIAGRAM]
A
8
FROM AV
SW_AUDIO_R
SW_AUDIO_L
7
6
5
FROM/TO MICON/TUNER
SCL
SDA
4
BBE_SW
TV_MUTE
FROM POWER
P.CON+5V
P.CON+9V
SOUND+B
GND
3
SOUND_GND
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
C
R314
22
23
6.8K
R324
1.8K
5.0
5.0
5.0
1
2
136K
REF
VR1
+
-
REF
REF
+
-
VR2
136K
20
19
10.0
5.0
5.0
R320
6.8K
SOUND AMP IC
IC1001
AN5276
+
-
ATT.CONT.
+
ATT.
+
RIPPLE
FILTER
CH1
CH2
CH2
NC
GND
NC
MUTE
GND
RF
IN
IN
OUT
1
2
3
4
5
6
7
8
0
0
13.9
0
0
0
6.7
0.7
NC
R1013
10K
R1009
10K
3.6
0
HS1001
763WAA0215
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
B
C
No.52001
AV-20F703
AV-20F703
D
E
SOUND SCHEMATIC DIAGRAM
(MAIN PCB)
C334
0.033 B
C332
R326
C331
0.47 B
100 1/4W
0.022
R328
B
100
5.0
4.8
4.7
4.8
0
4.8
4.7
3
4
1
5
6
7
8
9
0
VR5
1.8K
VR3
TONE
R301
C306
+
AMP1
I2C BUS
-
INTERFACE
+
20K
0.0033
-
SIMAMP1
B
VOLAMP1
6.5K
6.5K
6.5K
VOLAMP2
-
CONTROL
SIMAMP2
6.5K
+
LOGIC
4.8
4.8
4.8
4.8
-
+
TONE
1
2
3
1.8K
VR4
AMP2
VR6
18
17
16
15
14
13
12
11
5.0
4.8
4.7
4.8
0
5.0
4.9
C330
C333
0.022 B
0.47 B
C339
0.01 B
C303
20
19
18
17
R325
C335
4.8
4.8
4.8
4.8
1.8K
0.033 B
16V
47
YK
R302
L301
R327
20K
C307
0.0033 B
47uH
100K
+
-
24
25
STAND
CH1
VCC
-BY
OUT
9
10
11
12
0
14.9
12.1
6.7
C1001
R1003
5.6K
50V
10
YK
C1002
R1004
5.6K
50V
10
YK
MUTE
Q1001
26
KRC111SRTK
0
27
CAUTION:
SINCE THESE PARTS MARKED BY
ARE
ATTENTION:
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
2-13
2-14
F
G
MC-Service
R303
C308
20K
0.033
B
R335
1K 1/4W
4.8
4.8
4.8
0
8.9
8.9
4
1
5
6
7
8
9
0
BBE
16
15
14
13
12
11
4.8
4.8
4.8
4.8
9.5
0
R304
20K
C309
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
No.52001
H
8
7
6
5
4
3
2
PCB010
TMA532
1
AUDIO SIGNAL
H
Advertisement
Table of Contents
