Sylvania 6626LDG A, Service Manual, Page: 30 / 74

9-4
Audio Block Diagram
L4350BLA
MAIN CB
A
DIGIT
AL MAIN CB
A UNIT
A
U
DIO SIGNAL
IC452
(INPUT SELECT)
MUTE
V
OLUME
T
O
DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM
T
O
SYSTEM CONTR
OL
BLOCK DIA
GRAM
V
O
LUME
AMP-MUTE
D
A
C-BCLK
D
A
C-LRCLK
D
A
C-OSCLK
AD-D
A
T
A
DA
C
-DA
T
A
A
UDIO(L)
-IN1 A
UDIO(R)
-IN1 A
UDIO(L)
-IN2 A
UDIO(R)
-IN2
SW CTL
IC801
(A
UDIO AMP)
AMP AMP
HDMI- A
UDIO(L)
-IN HDMI- A
UDIO(R)
-IN
SIF
TU1001(TUNER UNIT)
FL1002
A
UDIO(R)
-OUT A
UDIO(L)
-OUT
SP801 SPEAKER L-CH
CN804
CN151
CN151A
CN1116
CN113
CN1116
JK701
CN113
CN113
Q802
CN1116
DIGIT
AL
A
UDIO-OUT
CLN804
SP(L)
1
SP-GND
2
SP802 SPEAKER R-CH
CN803
CLN803
SP(R)
1
SP-GND
2
A
UDIO(L)
-IN3 A
UDIO(R)
-IN3 A
UDIO(L)
-IN4 A
UDIO(R)
-IN4
Q1516
JK1405 JK1405
B
UFFER
Q1014
B
UFFER
Q1013
B
U
FFER
Q1008 B
U
FFER
Q1010
Q1009 B
U
FFER
Q1515
B
UFFER
A
UDIO(L)-2
19
5
A
UDIO(R)-2
18
6
A
U
DIO(L)-1
2
22
A
U
DIO(R)-1
3
21
HDMI-A
UDIO(L)-IN
13
11
HDMI-A
UDIO(R)-IN
12
12
TUNER-A
UDIO(L)
16
8
TUNER-A
UDIO(R)
15
9
13 14
1 5 2
15 13 14
1 5 2
15
IC1051
(A
UDIO A/D CONVER
TER)
(B
UFFER)
A/D CONVER
TER
10
9
11
3
IC451
(INPUT SELECT)
SW CTL
10
9
11
3
SP(L)
77 SP-GND
99 SP(R)
88 SP-GND
10
10
7
12
5 2
8
6
1 2
11 10 15 12
IC1052
(A
UDIO D/A CONVER
TER)
D/A CONVER
TER
IC1111
IC1053 (OP AMP)
15 14
IC1002 (MTS/SAP A
UDIO SIGNAL PR
OCESS)
(L-CH) (R-CH)
MTS/SAP A
UDIO SIGNAL
PR
OCESS
30 29
21
3
2 6
1 7
7 8 5 6
MUTE-ON
Q1011
MUTE-ON
SA
W
FIL
TER
Q1006
B
UFFER
Q1007
B
UFFER
A
UDIO-SW2
A
UDIO-SW1
A
UDIO-SW0
T
O
SYSTEM
CONTR
OL
BLOCK DIA
GRAM
A
U
DIO-MUTE
TO
SYSTEM CONTR
OL
BLOCK DIA
GRAM
IC1803 (OP AMP)
2 6
1 7
SPDIF
Q451 Q452 Q453
INPUT SELECT SW INPUT SELECT SW
2
4
(B
UFFER)
IC1112
2
4
LED CB
A
JK703 JK704
Q1012 DRIVE
Q1509 B
U
FFER
WF7
(CO
AXIAL)
JK1403
4 4
D
V
D-A
UDIO(L)
10
14
D
V
D-A
UDIO(R)
91
5
D
V
D-A
UDIO(L)
D
V
D-A
UDIO(R)
D
V
D-SPDIF
< D
V
D SECTION >
T
O
D
V
D DIGIT
AL
SIGNAL PR
OCESS
BLOCK DIA
GRAM