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Fm Tuner Section; Block Diagram - Sharp FV-1800 Service Manual

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GENERAL
DESCRIPTION
The circuit used in this 6 band portable radio incorporates 17 transistors 13 diodes and 2 thermistors.
The audio signal passes through a 5 transistor audio amplifier circuit.
FM
— AM_
IF SECTION
ny
ma,
FM TUNER SECTION,
EM SAM, IF SECTION
ang
EXT_ ANT.
Q Q
i
FM AV
:
i i
;
FM RF AMP
FM MIX
|
Ist IF AMP
i
2nd IF AMP
=
3rd IF AMP
EM_DET
|
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Fe
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PETI
IFT
FT
FM
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et
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|
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OT ARTH
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W2
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ven
ne
ne
ee
ee
Se
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ie
iad —
Rec 6 Peay
~7—— = ——""
"AUIS
AMP
SECTION
Vv
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VOLUME
TONE
OUTEUT
SWI
aux IN.
/\
Ll
LPT.
|
Lw
AF AMP
AF. AMP
AF DRIVE
| |
@
sw
SPEAKER
aed |
:
a
ANT. COIL NX
@
/\
A
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LJ
|
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!
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swt
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co
IN34A,
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Figure
1 BLOCK
DIAGRAM

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