Sylvania SRT2232X Service Manual page 25

Audio Block Diagram
MAIN CBA
FROM
SIF
IF/VIDEO BLOCK
JK702
AUDIO-IN(L)
(REAR)
JK703
AUDIO-IN(R)
(REAR)
JK722
AUDIO-IN(L)
(FRONT)
JK723
AUDIO-IN(R)
(FRONT)
JK702
AUDIO-OUT(L)
(REAR)
JK703
AUDIO-OUT(R)
Q792 Q791
(REAR)
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IC431 (MTS/SAP AUDIO SIGNAL PROCESS)
STEREO
21 VCA
FILTER
OFFSET
CANCEL
SAP SAP
FILTER DEMOD
24
I2C
DECORDER
27
IC771 (INPUT SELECT)
TUNER
11
REAR
15 13
FRONT
12
(L-CH)
(R-CH)
TUNER
4
REAR
2 3
FRONT
1
SW CTL
9 10
Q761
AMP
Q751
AMP
Q794
Q793
+8V
6-5
L+R 75uS
FILTER DE-EMPH
L-R
FILTER
WIDE BAND
(L-R)/SAP
FILTER
SW
SAP OUT
FILTER
dBX
DE-EMPH
SPECTRAL
FILTER
IC801 (AUDIO AMP)
WF6
DC
5
VOL.
DC
2
VOL.
6
OFFSET
CANCEL
MATRIX
WIDE BAND WIDE BAND OFFSET
RMS DET EXPAND CANCEL
SPECTRAL
EXPAND
SPECTRAL
RMS DET
CN801
7
SP-GND 2
CN802
12
SP-GND 2
Q825
A-MUTE-H
VOLUME
A-O-MUTE
FROM/TO
INPUT 0
SYSTEM CONTROL
INPUT 1 BLOCK
SCL
SDA
6-6
AUDIO SIGNAL
L-CH
30
AGC
R-CH
29
SP801
SP-L 1
SPEAKER
L-CH
SP802
SP-R 1
SPEAKER
R-CH
L6650BLA