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AIF
AGC
1C20: LA1231N
+B
SA-155H/HB/E
CONSTANT
AFC
VOLTAGE CIRCUIT
TUNING
ofl
METER
1e-LiMiTe
RAMP
DRIVE
T
T
!
Is
Ta]
3d
4th
Gir
DETECTION
F
AF AMP.
oF
'
ignal
8)
p o p -
- ~ ~g- - ~ -y- - - yore ete
I- ~
9
eever
LEVEL
LEVEL
(iy
LEVEL
e
vevet
|
Muriwe
JOE TECTOR! [DETECTOR
|OETECTOR)
| |O
OR}
IDE TEC
F
CONTROL
(6) Muting
rl
iu
i
i
|
1
\
P
\
SIONADMEIER
:
MUTING DRIVE
Muting
\
fl
oo) be)
| Lt,
!
Lie
-
AF OUT
Signal Meter Control
.
Det.
.
I1C60: LA1245
1C601: NJM4558DX
3
XK
L
>
IC1A: LB1426
O
~—wP
AMIF
AMIF
OUT
IN
1C801: STK-459
Figure 19 EQUIVALENT CIRCUIT (BLOCK DIAGRAM) OF IC
-19-
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