A-509R
6
A
B
C
D
1
2
3
4
1
2
3
4
3. BLOCK DIAGRAM AND SCHEMATIC DIAGRAM
3.1 BLOCK DIAGRAM
RIAA
37dB
PHONO
REC
TUNER
LINE/SB
CD
TAPE1
/CD-R
/MD
REC
TAPE2
MONITOR
FUNCTION
SOURSE
2.8mV
/50k
Ω
200mV
/50k
Ω
200mV
/1k
Ω
200mV
/50k
Ω
200mV
/1k
Ω
CN101
CN102
TO FUNCTION SW
DIRECT, LOUDNESS ON/OFF
VOLUME UP/DOWN
MUTE, FUNC MUTE ON/OFF
TO PROTECTION RY
SR INPUT
FROM FUNCTION SEL
KEY INPUTS
µ
-COM
FROM UNUSUAL
OUTPUT DETECTION
FROM REC SEL
IC101(1/2)
IC101(2/2)
IC601
IC151
27
26
24
RY101
RY102
25
24
24
19
17
18
23
22
20
21
ON/OFF
LOUDNESS
VOLUME
UP/DOWN
M
Q501
Q503
IC251
VR501
CN203
CN203
CN501
CN501
14
14
1, 2
1, 2
D
FRONT R ASSY
A
AF ASSY
S601
S606
S602, S603
S701–S704
604
B
Q407, Q408
A
Q303
A
IC251
A
Q501–Q514
C
IC101
A
Q403, Q404
A
B
32, 33
17
30, 31
12, 15
2, 3, 4
38
1
37
23, 24,
36, 40,
41, 42