Audio Block Diagram - Sony SLV-M20HF Service Manual

SLV-M20HF

3-4. AUDIO BLOCK DIAGRAM

MA-335 BOARD (SEE PAGE 4-5, 21)
FM PB
3
FOR
HF ADJ
CHECK
1
CN341
IC340
AFM
REC/PB
AMP
DRUM
AUDIO
CN260 HA
HEAD
3 17
CH1
18
2 REC ON VCC VCC
24
CH2 HA
1 20
CA
16
PB ON
AGC AGC
13
DET
CJ570
L
LINE 1
AUDIO
IN
R
(SEE PAGE 4-32)
AJ-2
BOARD
CN801 CN423
CJ801
L2 L
L 3 3
LINE 2
AUDIO
IN
L2 R
R 5 5
CN301
1
AUDIO IC301
REC/PB
HEAD
HEAD
2 2 4
NOMAL
SW
AUDIO
ERASE
4
HEAD
T331,Q331
BIAS
FULL
ERASE
ERASE
1 SW5V
OSC
HEAD HEAD
CN302
16
SW5V SW12V
L341
35
14 SW12V SW12V
VCC
EP
HF
LPF
FM PB
AGC
3 37
AMP
SP
AGC FM REC HF
9
36
AMP LPF
H SW
1 40 AF SWP
LEVEL
REC MUTE 4
DET
REC 5
39 42 41
3-7
IC360
AUDIO
PROCESSOR
(HIFI)
15
14
MUTE
PNR
OUTPUT
VCO
L
16
SEL
MUTE 17
12
PNR
VCO
L
MUTE 13
1
2
NORMAL IN
21
NORMAL OUT
INPUT SEL SEL 20
IC201
AUDIO
PROCESSOR
5 6 3 4
(MONO)
REC
7
75
73
71
80 A-H SW
AUTO AUTO
5
BIAS
6
Q301
BIAS
SW
Q387
RF AUDIO TU700 1
FROM/TO
TUNER
BLOCK
TU AUDIO L IC733 3
(SEE PAGE 3-11, 12)
TU AUDIO R IC733 4
(2/2)
SW5V
76
EQ AVCC
10 11
PB
LINE
MUTE 77
PB:
AMP
PB
LP,SP
9
MUTE
8 ALC
CTL
REC
REC
3 1 79
REC:EP,LP
70
PB:EP
4
A MUTE IC161 31
I2C DATA1 IC161 28
FROM/TO
I2C CLOCK1 IC161 30
SYSCON
AF ENV IC161 59
BLOCK
(SEE PAGE 3-6)
AF SWP IC161 100
AF REC P IC161 2
AF REC IC161 96
3-8
L CJ570
LINE
AUDIO
OUT
R
Q386
MUTE MUTE
Q379
MUTE
SW