Sylvania SRT2227W, Service Manual

Page: 24 / 54

6-3
Audio Block Diagram
L2705BLA
MAIN CB
A
A
UDIO SIGNAL
A-MUTE V
OLUME
TO SYSTEM CONTR
OL
BLOCK
INPUT0 SCL SD
A
VCA
STEREO FIL
TER
75uS DE-EMPH
dBX DE-EMPH
L+R FIL
TER
WIDE BAND FIL
TER
WIDE BAND RMS DET
WIDE BAND EXP
AND
SPECTRAL EXP
AND
SPECTRAL RMS DET
SPECTRAL FIL
TER
OFFSET CANCEL
L-CH R-CH
MA
TRIX
AG
C
OFFSET CANCEL
L-R FIL
TER
(L-R)/SAP SW
SAP FIL
TER
I2C DECORDER
SAP DEMOD
SAP OUT FIL
TER
29 30
TO IF/VIDEO BLOCK
21 27 24
IC431
(MTS/SAP A
UDIO SIGNAL PR
OCESS)
A
UDIO-IN(L)
(REAR) JK711
SIF
JK711 A
UDIO-IN(R)
(REAR)
OFFSET CANCEL
JK801 HEADPHONE JA
C
K
SP802 SPEAKER R-CH
CN802
SP-R
1
SP-GND
2
SP801 SPEAKER L-CH
CN801
CLN801 CLN802
SP-L
1
SP-GND
2
11
IC801
(A
UDIO AMP)
7
V
OLUME
14
1
AMP AMP
MUTE /ST
ANDBY
CONTR
OL
3 6 8
TUNER TUNER LINE LINE
(R-CH) (L-CH)
2
12
Q811
RF
Q801
5
RF
TO PO
WER SUPPL
Y
BLOCK
WF6
JK702 A
UDIO-IN(L)
(FR
ONT)
JK703 A
UDIO-IN(R)
(FR
ONT)