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A
B
8
FROM/TO MICON/TUNER
SCL
SDA
AUDIO_MUTE
7
6
FROM DEFLECTION/CRT
P.CON+9V
5
FROM/TO AV
P.CON+9V_1
REAR_AUDIO_R
REAR_AUDIO_L
FRONT_AUDIO_R
FRONT_AUDIO_L
4
AUDIO_OUT_R
AUDIO_OUT_L
FROM POWER
SOUND+B
GND
S104Y
SOUND_GND
3
FROM/TO CHROMA
TU_AUDIO_OUT
STEREO+5V
AUDIO_OUT_L
AUDIO_OUT_R
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
SOUND SCHEMATIC DIAGRAM
26
3.2
C901
4.2
BUFFER
50V
1
KA
Q901
0
KTA1266
3.2
C902
2.3
BUFFER
50V
1
KA
NC
Q902
0
2.3
2.3
2.3
2.3
KTA1266
24
23
22
21
20
DAC
ZAP
AGC
OUT SW
Switch
L-R Filter
Matrix
De-Emph
(L-R)/SAP
75us
L+R Filter
Filter
Cancel
SAPout
Offset
Expand
Cancel
Wide Band
Offset
1
2
3
4
5
0
2.3
2.3
2.3
2.2
R1003
10K 1/4W
S104X
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)
(DBTV2702)
25
27
0
5.0
5.0
0
3.7
3.6
2.6
3.7
19
18
17
16
15
14
13
GND
IIC Decoder
St.PLL
Det
VCA
Det
Pilot
Input
SAP
Cancel
L-R Demod
Pilot
Filter
Filter
Filter
L+R Demod
Stereo
Noise
SAP
Demod
Filter
Filter
fH.2fH Trap Filter
SAP
Wide Band
Spectral
RMS Det
Expand
RMS Det
Det
dbx De-Emph
Wide Band
Spectral
Spectral
Noise
Vcc
6
7
8
9
10
11
12
2.2
0.4
5.1
2.4
2.4
0.4
2.3
3.4
28
31
SOUND AMP IC
IC1001
+
ATT.
RIPPLE
FILTER
NC
CH1
GND
RF
IN
1
2
3
4
0
0.6
17.6
NC
C1003
R1009
50V
2.2
KA
1K
1/4W
C1001
R1004
50V
2.2
KA
1K 1/4W
HS1001
763WAA0215
S801Y
R1002
4.7K
CAUTION:
SINCE THESE PARTS MARKED BY
ARE
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D
E
F
G
C303
R309
29
0.033 B
1.8K
C315
C316
R307
0.022
0.47
4.7K
F
TF
4.4
4.2
4.2
4.4
3.4
3.3
4.4
0
5.0
1
2
3
4
5
6
7
8
VR5
1.8K
VR3
TONE
136K
AMP1
+
REF
-
VR1
+
-
SIMAMP1
+
-
REF
VOLAMP1
6.5K
6.5K
6.5K
VOLAMP2
REF
+
-
-
SIMAMP2
+
6.5K
VR2
-
+
TONE
136K
1.8K
VR4
AMP2
VR6
20
19
18
17
16
15
14
13
8.9
4.2
4.2
4.4
3.4
3.3
4.4
0
5.0
C324
C323
0.022 F
0.47
TF
R311
C322
1.8K
0.033 B
R312
1K 1/4W
30
AN5276
+
+
-
-
ATT.CONT.
+
CH2
CH2
STAND
CH1
NC
MUTE
GND
VCC
IN
OUT
-BY
OUT
5
6
7
8
9
10
11
12
0
1.0
0
16.8
0.3
0
18.9
8.7
16.8
C1011
32
W863
SP OUT L+
25V
1000
YK
SP OUT L-
SP OUT R-
W864
SP OUT R+
33
C1008
25V
1000
YK
W813
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
H
8
7
5.0
9
10
I2C BUS
INTERFACE
6
CONTROL
LOGIC
12
11
5.0
R310
100K
5
S801X
4
SPEAKER
CP1001
A2502WV2-4P
1
1
3
SP1001
2
2
SPEAKER
S0509F12-E
3
3
8OHM 2.5Wx2
4
4
2
PCB010
TMB544
AUDIO SIGNAL
1
H
G-10
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