Sharp SA-155H - Page 13

AIF
AGC
1C20: LA1231N
+B
SA-155H/HB/E
OR
Fog
ees
1C40:
HA1196
~8)-@)
(9)
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) pop- - ~ ~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-