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4-1.
BLOCK DIAGRAM
FM/AM RF AMP, IF AMP,
S1
MIX, OSC, DET, AGC, AF AMP
IC1
FM SENS
DX
LOCAL
TV/FM
FM RF
IN
B.P.F.
30
TV/FM
BPF1
RF AMP
29
TV RF
IN
CT1 (1/4), L6
TV/FM
FM FREQUENCY
COVERAGE
TV OSC
5
FM OSC
L6
4
FM OSC
L5
AM FERRITE-ROD
CT1
CV1
ANTENNA
(1/4)
(1/4)
AM RF IN
AM
2
RF AMP
CT1 (4/4), L5
AM TRACKING
CV1
L1
CT1
(4/4)
FM RF
(4/4)
CT1 (2/4), L1
FM TRACKING
CV1
TUNE
• SIGNAL PATH
: FM
: AM
05
SECTION 4
DIAGRAMS
MIX
PSN
FM
FM LIMITER
1
1
L.P.F.
AMP
TV/FM
MIX
MIX
PSN
AM
AM IF
2
2
L.P.F.
AMP
1st
LOCAL
OSC
1/2
COUNTER
2nd
FM/AM
LOCAL OSC
27
24
23
L3
AM OSC
L2
S2-1
2ND OSC
CV1
CT1
BAND
2ND LOCAL
CT1
CV1
(2/4)
(2/4)
FREQUENCY
(3/4)
AM
(3/4)
(57.1MHz)
CT1 (3/4), L3
FM
AM FREQUENCY
COVERAGE
– 7 –
DET
MPX
FM
AF
OUT
IN
STEREO
DISCRI
11
12
AMP
DECODER
AM
DET
DETUNE
DET
PD
TUNING
INDICATOR
SYNC
DET
FM/AM
FM/AM
SELECT
TV/FM
TV/FM
SELECT
7
22
20
21
14
B+
S2-2
BAND
AM
FM
–1
–2
RV1
VOL
LOUT
16
SEP.
AMP
ROUT
CONTROL
17
19kHz π/2
1/2
BUFFER
19kHz 0°
COUNTER
PLL
VCO
DC
VCO
19
B+
AMP
38kHz
L4
FM STEREO
(38kHz)
MONO/STEREO,
ST IND
STEREO
15
INDICATOR
13
B+
HEADPHONE AMP
IC2
IN
OUT
POWER
4
7
AMP
HPJ1
2
(HEADPHONE)
IN
OUT
POWER
2
9
AMP
S3
POWER
ON
OFF
B+
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
1PCS. 1.5V
– 8 –
SRF-PSY03
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