Sharp FV-1710

GENERAL DESCRIPTION
The
circuitry
used
in
this
six
band
portable
radio
incorporates
18
transistors,
10
diodes,
4
rectifiers
and
1
thermistor.
A
bar
antenna
feeds
the
LW
or
MW
broadcast
signal
to
the
converter.
A
telescopic
antenna
feeds
the
SW
or
FM
broadcast
signal
to
the
mixer.
The
AM
Singal
goes
through
2
IF
amplifiers
and
1
diode
detector.
The
FM
signal
goes
through
3
IF
amplifiers
and
2
diode
detector.
(matched
pair).
The
audio
signal
then
passes
through
a
6
transistor
audio
amplifier
circuit.
Local
oscillator
voltage
is
fed
back
to
the
mixer.
An
AM
AGC
voltage
is
fed
back
to
1st
IF
amplifier.
~
NS OF Ie f
CHASSIS REMOVAL
Slide
the
battery
cover
lock
button
to
OPEN
position
and
remove
the
battery
cover.
Remove
the
2
screws
retaining
the
back
cover
and
remove
the
back
cover.
Remove
all
the
jacks
(Car
Ant.,
Ext.
Ant.,
Phono,
Tuner
Output,
Earphone)
and
the
AC/DC
power
selector
knob
from
the
back
cover.
Detach
the
dial
cord
string
from
the
pointer.
Remove
the
AC
power
indicator
light
from
its
socket.
Pull
off
the
4
knobs
on
the
front
of
the
cabinet.
Take out the battery case.
Remove
7
chassis
mounting
screws
@.
And
the
chassis
can
be
removed.
Exercise
caution
to
avoid
breaking
the
leads.
If
necessary,
unsolder
the
leadwires
attached
to
the
chassis.
Battery Case Holding String
Figure 1