Main Board - Sony CFD-G555CP Service Manual

CFD-G555CP/G555CPK
– MAIN Board –
IC321 BD3870FS-E2
24
0dB-
-87dB
-
Vcc/2
1
– TC Board –
44
23 22 21 20
Treble1 Treble2 Bass2
fc=8kHz fc=8kHz fo=80Hz
Vcc/2
50k
2 3 4 5
IC301 TA2068N
AGC 1
2
L.PO
NAB
AMP1
BUF AMP
L.NF 3
A1
REC
AMP1
L.RO 4
26dB
L.IN 5
6
REF
REF
AMP
7
GND
2.1
REC
R.IN 8
AMP2
R.RO 9
26dB
R.NF 10
NAB
AMP2
R.PO 11
BUF AMP
MIC
A2
AMP1
MIC.NF 12
19 18 17 16
Bass1
fo=80Hz
Vcc/2
50k 50k 50k 50k
6 7 8 9
LINE
TAPE
RADIO
MONITOR
BUF AMP
MUTE
AMP
B1
7dB
ON
LOGIC
ON
7dB
BUF AMP
B2
MONITOR
MUTE
AMP
RADIO
TAPE
LINE
15 14 13
Logic
Vcc/2
Vcc/2
50k
10 11 12
L.LIN
24
23 MIC I/EX
22
L.RAD
21 REC
20
L.LO
19 VCC
18 R.LO
17
LINE
R.RAD
16
15 TAPE
14
R.LIN
13
MIC