Ic Block Diagrams; Ic31, 51 Sc111711Dr2; Ic32, 52 Mc34119Dtbel - Sony MDR-IF5000 Service Manual

• IC Block Diagrams

IC31, 51 SC111711DR2

MIXER
INPUT GND
16 15
SQUELCH TRIGGER WITH
MIXER
OSCILLATOR
1 2
CRYSTAL
OSC

IC32, 52 MC34119DTBEL

8 7 6
BIAS
CIRCUIT
1 2
SCAN SQUELCH FILTER FILTER
MUTE CONTROL IN OUTPUT INPUT
14 13 12 11
FILTER
AMP
HYSTERESIS
LIMITER
AMP
3 4 5 6
MIXER VCC LIMITER
OUTPUT INPUT
DECOUPLING
5
+
_
3 4
RECOVERD
AUDIO
10 9
–
AF
AMP
+
DEMODULATOR
7 8
QUAD
COIL
– 13 –