Sony CFD-V27 - IC Block Diagrams

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2-5. IC BLOCK DIAGRAMS
IC1 CXA1238S
30 29
4 5 6 7 8 9 10 11 12 13 14 15321
28 27 26 25 24 23 22 21 20 19 18 17 16
REG
FM FRONT-END
AM FRONT-END
VCO MPX REG.
1/2
COUNTER
1/2
COUNTER
PD1
PD2
MUTING
DECODER AMP
MONO/ST
SELECT
RIPPLE
FILTER
AUTOBLEND
BAND PASS
MUTE
TUNING
INDICATOR
FM IF/
DISCRI
AM
IF/DET
GND PLL LPF2 MPX REG VCO FM DISCRI MUTE AM OSC AFC FM OSC REG FM RF AM RF IN FM RF IN
BAND SELECT
AM IF IN
FM IF IN
TUNE IND
GND
VCC
L CH OUT
R CH OUT
ST IND/
VCO CHECK
PILOT DET LPF2 PILOT DET LPF2
PLL LPF1
AGC AFC2 AGC AFC1
RIPPLE
FILTER
FM GND FM/AM FE OUT
21
22
2324
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
181920
LOGIC
7dB
26dB 26dB
7dB
ALC1
ALC2
DET
MIC
AMP1
1k
10k
NAB
AMP2
NAB
AMP1
ON
MUTE
MUTE
MUTE
BUF AMP
A2
BUF AMP
A1
BUF AMP
B1
BUF AMP
B2
TAPE
TAPE
–––––
TAPE
–––––
LINE
RADIO
10k
10k
10k
1k
1k
10k
10k
10k
10k
10k
10k
10k
10k
10k
10k
15k
6k
1k
6k
LINE
RADOI
TAPE
REC
AMP1
REC
AMP2
REF AMP
2.1
ON
ON
MONITOR
AMP
MONITOR
AMP
LIN
MIC I/EX L. RAD
L. LO REC
TAPE R. LIN MIC IN
R. LO LINE R. RAD
VCC
MIC
NF
R. PO
R. NF
R. RO
R. IN
GND
REF
L. IN
L. RO
L. NF
L. PO
AGC
IC301 TA2068N