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INTERNAL BLOCK DIAGRAM OF ICs
IC201 LA1837
FM SD AM-STEREO
OSC VT BAND-W
LR-INPUT
BUFF
AM AGC
L R L-OUT R-OUT
OSC
L.P.F. L.P.F.
AM SD
+ + + +
RF
ADT
- +
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
3 5
REG
DECODER
ALC AM AM ANT 1-BIRDIE
AM RF AMP
OSC MIX
RUFF MUTE
P-DET
O STEREC
SW
AGC
AMIF DET
VCO FF FF FF PILOT
SD 304KHz 38K 38K