9-3
Audio Block Diagram
L3250BLA
MAIN CB
A
A
U
DIO SIGNAL
A
UDIO-MUTE
V
OLUME
INPUT
-0(INV)
INPUT
-1(INV)
SCL
SD
A
IC852
(INPUT SELECT)
SW CTL
3
11
15
14
4
5
9
10
TO
IF/VIDEO BLOCK
DIA
GRAM
TUNER
TUNER
(L-CH)
(R-CH)
A
UDIO1(L)
-IN
JK704
SIF
JK705
A
UDIO1(R)
-IN
JK709
A
UDIO2(L)
-IN
JK710
A
UDIO2(R)
-IN
14
IC801
(A
UDIO AMP)
7
V
OLUME
11
AMP
AMP
MUTE
/ST
ANDBY
CONTR
OL
6
8
1
12
3
(R-CH)
(L-CH)
2
Q802
Q803
JK801
HEADPHONE
JA
C
K
SP801
SPEAKER
R-CH
CN801
SP-R
1
GND
2
SP802
SPEAKER
L-CH
CN802
CLN802
CLN801
SP-L
1
GND
2
REG+5V
T
O
IF/VIDEO
BLOCK DIA
GRAM
13
2
WF6
A
UDIO1
A
UDIO2
A
U
DIO1
A
U
DIO2
P-ON-H
D
VD-MUTE
DIGIT
AL
A
UDIO OUT
(CO
AXIAL)
JK1701
B
UFFER
Q1701
SWITCHING
Q804
WF15
WF16
WF17
IC601
(A
UDIO D
A
C)
CN601
CN1701
4
3
2
5
SERIAL
CONTR
OL
POR
T
4X/8X O
VERSAMPLING
DIGIT
AL FIL
TER /FUNCTION
CONTR
OLLER
ENHANCED
MUL
TI-LEVEL
DEL
T
A-SIGMA
MODULA
T
O
R
DA
C
LPF+AMP
L-CH
R-CH
LPF+AMP
DA
C
ZER
O DETECT
SYSTEM CLOCK
MANA
GER
7
6
8
TO
DIGIT
AL
SIGNAL
PR
OCESS
BLOCK
DIA
GRAM
SPDIF
PCM-BCK
PCM-D
A
T
A
PCM-LRCLK
A
UDIO
SERIAL
POR
T
15
14
16
7
D
VD-MUTE
14
8
D
V
D-A
UDIO(R)
15
6
D
V
D-A
UDIO(L)
13
11
SPDIF
18
D
VD MAIN CB
A UNIT
TO
SYSTEM
CONTR
OL
/SER
V
O
BLOCK
DIA
GRAM
<D
VD
SECTION>
AD
A
C-MD
AD
A
C-MC
AD
A
C-ML
STEREO
FIL
TER
75uS
DE-EMPH
L+R
FIL
TER
WIDE BAND
RMS DET
WIDE BAND
EXP
AND
SPECTRAL
EXP
AND
SPECTRAL
RMS DET
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
21
27
24
IC851
(MTS/SAP A
UDIO SIGNAL PR
OCESS)
OFFSET
CANCEL
SIF/BB
SW
INPUT
VCA
SIF
DEMOD
SPECTRAL
FIL
TER
WIDE BAND
FIL
TER
dBX
DE-EMPH
A
UDIO-MUTE
PCM-SCLK
D
A
T
A(A
UDIO) SIGNAL
T
O
SYSTEM
CONTR
OL BLOCK
< LCD
TV SECTION>
TP1801
FL
TP1802
FR
