iLO IWT3206, Service Manual

Page: 29 / 60

7-4
Audio Block Diagram
L4903BLA
MAIN CB
A
A
U
DIO SIGNAL
A
UDIO-MUTE1
V
OLUME
T
O
SYSTEM
CONTR
OL BLOCK
T
O
SYSTEM
CONTR
OL BLOCK
INPUT0 INPUT1
SCL SD
A
IC701
(INPUT SELECT)
SW CTL
13
3
11 15 12
5 2 1
9
10
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
TUNER
LINE1
LINE2
LINE1 COMP LINE2
(L-CH) (R-CH)
21 27 24
IC451
(MTS/SAP A
UDIO SIGNAL PR
OCESS)
A
UDIO(L)-IN1
JK711
SIF
A
UDIO-MUTE2
A
UDIO(R)-IN1
JK702 A
UDIO(L)-IN2
JK703 A
UDIO(R)-IN2
OFFSET CANCEL
COMP- A
UDIO(L)-IN
JK742
COMP- A
UDIO(R)-IN
4
TUNER
14
COMP
11
IC801
(A
UDIO AMP)
7
V
OLUME
14
AMP AMP
MUTE /ST
ANDBY
CONTR
OL
3 8
(R-CH) (L-CH)
2
12
Q811
+5V
WF11
SP802 SPEAKER R-CH
CN802
SP-R
1
GND
2
SP801 SPEAKER L-CH
CN801
CLN801 CLN802
SP-L
1
GND
2
Q61
B
UFFER
T
O
DTV
BLOCK
DTV
-A
UDIO(R)
DTV
-A
UDIO(L)
1 6
Q352
Q351
WF12