1-13-8
H
i
-F
i
Aud
i
o Block D
i
agram
E3B90BLH
48
47
14
15
78
R-CH
INSEL
L-CH
INSEL
NOR
SW
SERIAL
DATA
DECODER
OUTPUT
SELECT
VCO
LPF
L-CH
BPF
R-CH
PNR
L-CH
PNR
LIM
DEV
COMP
SW
NOISE
VCO
LPF
LIM
DEV
COMP
COMP
SW
NOISE
MIX
R-CH
BPF
P
R
R
L
P
R
HOLD
PULSE
NOISE
DET
DO
DET
ENV
DET
34
33
76
77
74
37
38
39
75
73
26
21
24
27
N-A-REC
VCR-AUDIO-OUT(R)
VCR-AUDIO-OUT(L)
LIM
80
N-A-PB
Hi-Fi-H-SW
A-MODE
TO AUDIO
BLOCK DIAGRAM
TO AUDIO
SELECTOR
BLOCK DIAGRAM
IIC-BUS SDA
VCR-AUDIO-IN(L)
VCR-AUDIO-IN(R)
IIC-BUS SCL
TO
SERVO/ SYSTEM
CONTROL BLOCK
DIAGRAM
BOARD POWER
Hi-Fi-AUDIO(R) 7
Hi-Fi-COM 8
Hi-Fi-AUDIO(L) 9
CN251
IC451
( Hi-Fi AUDIO PROCESS)
REC-AUDIO SI
G
NAL
PB-AUDIO SI
G
NAL
M
ode
:
SP/REC
Q451
MUTE-ON
MUTE-ON
50
4
Hi-Fi
AUDIO(R)
HEAD
Hi-Fi
AUDIO(L)
HEAD
CYLINDER ASSE
M
BLY
(DECK ASSE
M
BLY)
TO AUDIO
SELECTOR
BLOCK DIAGRAM
NOTE
:
BOARD
M
EANS PRINTED CIRCUIT BOARD
.