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16
15
14
13
12
11
10
3
V+
CHK
GND
1
3
4
V.C.O.
76 kHz
PHASE LOCK
DETECTOR
PILOT
PRESENCE
DETECTOR
STEREO
SWITCH
LAMPDRIVER
ST-MONO SW.
V.C.0 STOP
SWITCH
76kHzTO
38kHz
DIVIDER
38kHz TO
19kHz
DIVIDER
38kHz TO
19kHz
DIVIDER
PRE AMP. —
NF AMP.
1 +
mg
V+
x
IN
µPC 1161
STEREO
DEMODULATOR
L CH
POST AMP.
R CH
POST AMP.
02,-1
AM
Fm Switch Matrix
Display or Switch Matrix
1 GNDI KOK1K2K3 a
b
c
d
e
f
g
28 27 26 25 24 23 22 21 20 19 18 17 16 15
o
o
5
6
7
RIGHT
LEFT
lell)
OUT
OUT
v+
µPD 1703 C-018
PLL Frequency Synthesizer
8
1.1PC 4559C
0
f
2
3
4
5
6
7
8
9 10 11 12 13 14
4
E01 ECQCE PSC \»
SD 1
FM AM
01.18113
Tuning
b-- 2 rx3 tra
V+
V-
Dickt Drivers
GND
16
15
14
13
12
11
10
9
0
1
2
3
4
5
2 SC 1675 - K
2 SC 1685 - R
2 SC
945 - P
2 SA
564 - R
2 SA
569 - Q
PA 80C
7zORIVER
0
0
8
v-
AN 78 M 24
l
t
3
16
•u
3
3
ld.0
b8
3
4
5
8
9
µPC 4559 C
µPB 553 AC
µPA 80 C
µPC 1161 03
CMOS
to
ECL
pP8 553 AC
FF
0-11>
Enable Pulse
Generator
1
Timing Pulse Generator
V
4- 16 Divider
150 MHz, ÷ 16/17 Low Power Prescaler
2
In
FM- IF
AM- IF
V. GND
PHASE
1
8
9
7
14
11
12
AM/FM
IF -AMP
FM/ IF
LEVEL
METER
MUTE
-. 10UAD. DET
AN 7273
AFC
16
AFC
6
15
3
METER
AM-RF
AM/ FM SYSTEM
MUTE
CONTR
5
Out
AUDIO
13
AUDIO
AM P
AM
DET.
4
18
5
6
MIX
OSC. AGC
AGC
AN 7273
µPD 1703 0-018
0
10
17
VR EF.
STK 4131-2
9
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