Emerson EWR20V4, Service Manual

Page: 31 / 91

1-10-7
Audio Block Diagram
E9400BLA
REC AMP
SERIAL I/F
9
8
AU
T
O
BIAS
11
P-ON+5V
P-ON+5V
Q421
BIAS OSC
Q422
Q426 (PB=ON)
Q425
SWITCHING D-REC OFF
6
EQ AMP
LINE AMP
MUTE
LPF
10
SP/LP-ON
P
R
ALC
(A
UDIO PR
OCESS)
76 80 78
TUNER LINE 1 LINE 2
4
A-PB/REC
CN504
3
A-COM
1
AE-H
2
AE-H/FE-H
A
UDIO
HEAD A
UDIO
ERASE HEAD
A
C
HEAD
ASSEMBLY
FE HEAD
(DECK
ASSEMBLY)
1
FE-H
2
FE-H-GND
CN501
MAIN CB
A
PB-AUDIO SIGNAL
REC-AUDIO SIGNAL
Mode : SP/REC
58
55
53
54
D-REC-H
A-MUTE-H
TO SER
V
O
/SYSTEM
CONTR
OL BLOCK
DIA
GRAM
FULL ERASE HEAD
YCA-CS
YCA-SCL
YCA-SD
A
IC301
N-A-OUT N-A-IN
T
O
Hi-Fi A
UDIO
BLOCK DIA
GRAM
3
2
4
5
D
VD A
U
DIO SIGNAL