Emerson EWR20V4, Service Manual

Page: 32 / 91

1-10-8 E9400BLAS
Audio Input/Output Select Block Diagram
IC13
(A
UDIO D/A CONVER
TER)
DIGIT
A
L
A
U
DIO OUT
A-MUTE
OUTPUT
-SELECT
JK1202
JK805
B
U
FFER
Q1351
Q804
Q806
A
U
DIO-L
OUT1
MAIN CB
A
J
A
CK CB
A
D
VD BE MAIN CB
A UNIT
A
U
DIO-R
OUT1
JK801
A
U
DIO-L
IN2 A
U
DIO-R
IN2
JK800
JK804
A
U
DIO-L
IN1 A
U
DIO-R
IN1
SIF OUT
PB/EE-A
U
DIO(R)
MOD-A
VCR-A
U
DIO(R)
PB/EE-A
UDIO(L)
VCR-A
UDIO(L)
D
VD-A
UDIO(R)
D
VD-A
U
DIO(L)
L-CH R-CH
66
A(L)-IN2
88
A(R)-IN2
18
18
SPDIF
27
27
A-OUT(L)
29
29
A-OUT(R)
21
21
D
VD-A-MUTE
25
25
A
UDIO(L)
23
23
A
UDIO(R)
(MTS/SAP A
UDIO
SIGNAL PR
OCESS
)
IC900
(OP AMP
)
IC803
T
O
DIGIT
A
L
SIGNAL PR
OCESS
BLOCK DIA
GRAM
TU900 (TUNER UNIT)
MTS/SAP A
UDIO
SIGNAL PR
OCESS
OP AMP
A
UDIO D/A
CONVER
TER
OP AMP
15
A
UDIO-IN
2
21
30 29
1 7
2 6
(OP AMP
)
IC802
(A
UDIO INPUT SELECT)
VCR PB
IC801
OP AMP OP AMP
1 7
3
13
2 6
24
27
4 2 5
11
1
12 15 14
MUTE-ON
DRIVE
Q805
MUTE-ON
9
10
1 2 3
7 8
11
13 14 16
IC12
(A
UDIO A/D CONVER
TER)
A
UDIO A/D
CONVER
TER
13 14 15
1 5
16
SPDIF
CN6
CN202
CN7
CN201
BCK DA
T
A
LRCK MD MC SCK
15
ML
L-CH R-CH
MUTE
BCK DA
T
A
LRCK SYSCLK
R-CH L-CH
IN1 TU IN2
(L-CH)
IN1 IN1 IN1 TU IN2
(R-CH)
SW CTL
INSEL-1 INSEL-0
T
O
SUB SYSTEM
CONTR
O
L
BLOCK DIA
GRAM
9
10
SW CTL
11
(OP AMP)
IC804
(OUTPUT SELECT)
IC1406
OP AMP OP AMP
2 6
1 7
JK751
A
U
DIO-L
OUT2 A
U
DIO-R
OUT2
T
O
SER
V
O/SYSTEM
CONTR
OL BLOCK DIA
GRAM
T
O
SUB SYSTEM
CONTR
O
L
BLOCK DIA
GRAM
T
O
Hi-Fi A
UDIO
BLOCK DIA
GRAM
SUB-SCL SUB-SD
A
T
O
SUB SYSTEM
CONTR
O
L
BLOCK DIA
G
RAM
CN1609
CN1605
REC AUDIO SIGNAL
PB AUDIO SIGNAL
12 13
5 3
14
4
(DVD VCR DUBBING)
(VCR DVD DUBBING)
TP754
A-OUT
-L
TP753
A-OUT
-R
WF10
WF11
WF9