Sharp LC-20AV7U User Manual

8-3
Audio Block Diagram
A7121BLA
MAIN CBA
AUDIO-MUTE
VOLUME
TO SYSTEM CONTROL BLOCK DIAGRAM
INPUT-0(INV) INPUT-1(INV)
SCL
SDA
IC852 (INPUT SELECT)
SW CTL
INH
3
12 15 11 14
1 4
6
9 10
STEREO FILTER
75uS DE-EMPH
dBX DE-EMPH
L+R FILTER
WIDE BAND FILTER
WIDE BAND RMS DET
WIDE BAND EXPAND
SPECTRAL EXPAND SPECTRAL RMS DET
SPECTRAL FILTER
OFFSET CANCEL
L-CH R-CH
MATRIX AGC
OFFSET CANCEL
L-R FILTER
(L-R)/SAP SW
SAP FILTER
I2C DECORDER
SAP DEMOD
SAP OUT FILTER
29 30
TO IF/VIDEO BLOCK DIAGRAM
TUNER
TUNER
(L-CH)
(R-CH)
21 27 24
IC851 (MTS/SAP AUDIO SIGNAL PROCESS)
AUDIO(L) -IN1 JK704 DIGITAL AUDIO-OUT JK1701
SIF
JK705 AUDIO(R) -IN1 JK709 AUDIO(L) -IN2 JK710 AUDIO(R) -IN2
OFFSET CANCEL
14
IC801 (AUDIO AMP)
7
VOLUME
11
AMP AMP
MUTE /STANDBY CONTROL
(R-CH) (L-CH)
2
Q802
P-ON+5V
TO IF/VIDEO BLOCK DIAGRAM
13
2
WF7
AUDIO1
AUDIO2
AUDIO1 AUDIO2
SIF/BB SW
INPUT VCA
SIF DEMOD
INPUT-2(INV)
6
DTV
DTV
5
1
DTV-SPDIF DTV-AUDIO(L)
TO DTV MODULE BLOCK DIAGRAM
DTV-AUDIO(R)
AUDIO SIGNAL
AUDIO MUTE
JK801 HEADPHONE JACK
SP801 SPEAKER R-CH
JUNCTION-B CBA CL802
SP802 SPEAKER L-CH
JUNCTION-A CBA CL801
22SP-GND 11SP-L 22SP-GND 11SP-R
NOTE: CBA AND PWB MEANS PRINTED WIRING BOARD.

Sharp LC-20AV7U Specifications

General

Brand	Sharp
Model	LC-20AV7U
Category	TV
Language	English