Emerson EWV401B Service Manual page 19

Hi-Fi Audio Block Diagram ( EWV601B )
IC451 (MTS/ SAP/ Hi-Fi AUDIO PROCESS/ Hi-Fi HEAD AMP)
SIF
57
FROM/TO
AUDIO BLOCK
A-IN(R)
69
A-IN(R)-F
71
N-A-OUT NOR
6
SW
A-IN(L)
7
A-IN(L)-F
9
1-8-7
NOISE
DET
SIF SAP SAP
DEMOD FILTER DEMOD
L-R
DEMOD
STEREO PILOT
FILTER CANCEL
PILOT
DET
STEREO
PLL
SW
P
R-CH
NOISE
PNR
R
LIM
R-CH
48 47
INSEL
L-CH
13 14
INSEL
LIM
R
L-CH
SW
PNR
NOISE
P
MAIN CBA
dBX
ST/SAP
DC
DEC
SW
MATRIX
COMP R-CH BPF
DEV
VCO LPF
OUTPUT
SELECT
ALC
HOLD
PULSE
NOISE
MATRIX COMP
DET
DEV VCO LPF
AGC
COMP L-CH BPF
AGC
DET
PB-AUDIO SIGNAL REC-AUDIO SIGNAL
Hi-Fi-CS
SERIAL 37
Hi-Fi-DATA
DATA
38
Hi-Fi-CLK
DECODER
39
RIPPLE
54 P-ON+9V
FILTER
MODE ST/SAP-MODE
51
OUT
NORMAL-H
BO ENV
23
DET DET
N-A-IN
4
A-OUT (L)
80
MOD-A
MUTE 2
A-OUT (R)
78
77
1
Hi-Fi-H-SW
40
A-MUTE-H
49
26
CL253
R
24 Hi-Fi- A(R) 7
31 30 Hi-Fi -COM 8
27 Hi-Fi- A(L) 9
L
1-8-8
Mode : SP/REC
FROM
SERVO/ SYSTEM
CONTROL BLOCK
TO SERVO/SYSTEM
CONTROL BLOCK
FROM/TO
AUDIO BLOCK
FROM
SERVO/SYSTEM
CONTROL BLOCK
CYLINDER
ASSEMBLY
Hi-Fi
AUDIO
(R) HEAD
Hi-Fi
AUDIO
(L) HEAD
HB4J1BLH