-35-
IC BLOCK DIAGRAM-2/3
IC, LC72131D
IC, LA1837NL
FM IN
AM IF OUT
FM IF REF
AM IF IN
GND
TUNE
ST/
AM IFO
VCC
FM DET
AM SD BW
FM VSM
AM VSM/
SD ADJ
IF BO
FM/AM
MONO
AM LBO/
FM SD ADJ
AM LO
REG
AM RF
S CUR
VE
AG
C
AM DET OUT
FM DET OUT
DET IN
L OUT
R OUT
L IN
R IN
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TEL 13942296513 QQ 376315150 892498299