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A
B
8
7
FROM MICON/TUNER
I2C_SDA
6
I2C_SCL
FROM/TO SOUND
GND
P.CON+5V
SOUND_L
SOUND_R
FROM CHROMA
TU_AUDIO_OUT
L702
5
P.CON+9V
100uH
FROM JACK/SOUND
FRONT_AUDIO_R
FRONT_AUDIO_L
AUDIO_OUT_L
AUDIO_OUT_R
BUFFER
5.5
C729
REAR_AUDIO_L
Q703
4.8
2SA1037AK
REAR_AUDIO_R
50V
4.7
0
GND
BUFFER
Q704
4
2SA1037AK
3
2
1
A
B
G-13
C
STEREO/MONO SCHEMATIC DIAGRAM
TU_AUDIO_OUT
C790
10V
100
KA
KA
5.5
C732
50V
4.7
KA
4.8
0
NC
2.3
2.3
2.3
2.3
0
5.0
5.0
0
3.7
3.6
2.6
24
23
22
21
20
19
18
17
16
15
14
GND
Det
VCA
OUT SW
DAC
ZAP
IIC Decoder
St.PLL
AGC
Pilot
Input
Switch
L-R Filter
L-R Demod
Cancel
Matrix
De-Emph
Pilot
(L-R)/SAP
Filter
Filter
Filter
75us
L+R Filter
L+R Demod
Stereo
Noise
SAP
Filter
Cancel
SAPout
Filter
Filter
Offset
fH.2fH Trap Filter
Wide Band
Spectral
Expand
Cancel
Wide Band
RMS Det
Expand
RMS Det
Offset
dbx De-Emph
Wide Band
Spectral
Spectral
Vcc
1
2
3
4
5
6
7
8
9
10
11
0
2.3
2.3
2.3
2.2
2.2
0.4
5.1
2.4
2.4
0.4
2.3
L701
100uH
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
C
D
E
(MAIN PCB)
TP701
L704
22uH
30
C748
SOUND_R
50V
2.2
KA
1
REF
3.7
13
Det
SAP
20
Demod
SAP
Det
Noise
31
C749
12
R744
3.4
50V
2.2
KA
AUDIO_L
1K
TP702
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.
D
E
F
G
R790
C798
1.8K
0.033 B
C796
C800
0.022
0.47 B
B
2
3
4
5
6
7
8
9
10
1.8K
VR3
VR5
TONE
136K
+
AMP1
I2C BUS
-
INTERFACE
VR1
+
-
SIMAMP1
+
-
REF
VOLAMP1
6.5K
6.5K
6.5K
VOLAMP2
REF
+
-
-
CONTROL
SIMAMP2
+
6.5K
LOGIC
VR2
-
+
TONE
136K
1.8K
VR4
AMP2
VR6
19
18
17
16
15
14
13
12
11
C797
C799
0.022 B
0.47 B
R789
C801
1.8K
0.033 B
R792
100K
AUDIO SIGNAL
F
G
H
8
7
6
5
4
3
2
PCB010
TM9442
1
H
G-14
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