Sony SLV-662HF Operating Instructions (SLV-662HF / 679HF / 679HF PX VCR), Service Manual

Page: 34 / 72

SLV-662HF/679HF
3-4. AUDIO/TUNER BLOCK DIAGRAM
3-7 3-8
CJ561
LINE
OUT
AUDIO
R
L
MA-341 BOARD
2
1
3
CN260
DRUM
AUDIO
HEAD
CH1
CH2
PNR
L
MUTE
INPUT SEL
LEVEL
DET
VCO
MUTE
IC360
AUDIO
PROCESSOR
(HIFI)
44 6 7 3 2
SCL
43
SD
A
42
R
L
AUDIO
CJ561
LINE 1
IN
BIAS
ERASE
OSC
T301,Q303
CN301
4
3
1
ERASE
AUDIO
REC/PB
HEAD
NOMAL
AUDIO
HEAD
SW
4 2
IC331
1
FULL
HEAD
CN302
HEAD
IC201
AUDIO
PROCESSOR
(MONO)
MUTE
LINE
AMP
ALC
93 92
EQ REC
REC
REC
84 87
REC:EP,LP
PB:EP
86
85
AUTO
BIAS
89
88
AUTO
A-H SW
74
76
78
MUTE
Q382
(2/2)
16
37
35
36
H
L
BPF VCO
PNR
R
10 11 41
OUTPUT SEL
MUTE
NA IN
NA OUT
16
15
17
18
14
13
22
21
L1
L2
TU
BIAS
SW
Q302
AUDIO
ERASE
HEAD
P
R
A MUTE
VREF
80
94
81
82
1
CN270
CHECK
HF ADJ
MUTE
Q381
MUTE
SW
Q380
C389
RF AUDIO 1 TU701
TO
TUNER
BLOCK
A MUTE IC160 63
FROM
SYSCON
BLOCK
FROM/TO
SYSCON
BLOCK
TU AUDIO L TU701 38
I2C DATA IC160 72
I2C CLK IC160 71
AF ENV IC160 9
AF SWP IC160 19
TU AUDIO R TU701 37
FROM
TUNER
BLOCK
22
(SEE PAGE 4-7,11)
(SEE PAGE 3-6)
(SEE PAGE 3-5)
(SEE PAGE 3-5)
(SEE PAGE 3-6)