Sharp GF-575H User Manual

GENERAL
ALIGNMENT
INSTRUCTION
Should
it
become
necessary
at
any
time
to
check
the
alignment
of
this
receiver,
proceed
as
follows:
1.
Set-the
volume
control
VR563
(and
VR564)
to
maximum.
5.
Set the
function
selector
switch
SW102
to
radio
position.
2.
Attenuate
the
signals
from
the
generator
enough
to
swing
6.
Set
the
fine
tuning
control
C60
to
mechanical
center
posi-
the
most
sensitive
range
of
the
output
meter.
tion.
3. Use a non-metallic alignment tool.
4. Repeat adjustments to insure good results.
AM IF/RF ALIGNMENT
(Refer to Figure 26-9)
SIGNAL GENERATOR RECEIVER
STEP
PANE
ee
CONNECTION
TO
|
INPUT
SIGNAL
SDILST
MENS
|
RECEIVER
FREQUENCY
DIAL
SETTING
REMARKS
Refer to Figure 26-1. Exactly 455 kHz: High end of dial. Adjust for Adjust the AM
,
MW
IF
(GF-575H)
(minimum
capac-
best
“IF”
tF
transformers.
Exactly
468
kHz:
ity)
curve
(T3,
T4)
(GF-575E)
=
=
4
T
:
f+
;
t
Refer
to
Figure
26-2.
Exactly
145
kHz.
Low
end
of
dial.
Adjust
for
Adjust
the
LW
local
2
LW
(400
Hz,
30%,
AM
(maximum
capac-
maximum
oscillator
coil
(L9).
Band modulated) i ity). output.
Coverage Same as step 2. Exactly 295 kHz. High end of dial. Same as step 2. | Adjust the LW local
3
LW
(400
Hz,
30%,
AM
(minimum
capac-
oscillator
trimmer
modulated)
ity).
(C71).
i
Same
as
step
2.
Exactly
170
kHz.
|
170
kHz.
Same
as
step
2.
Adjust
the
LW
4
|
LW
(400
Hz,
30%,
AM
|
bar
antenna
coil
(L7).
modulated)
See
‘
t——-++————_,
Tracking
+
pe
Same
as
step
2.
Exactly
270
kHz.
270
kHz
Same
as
step
2.
Adjust
the
LW
5
LW
(400
Hz,
30%,
AM
antenna
trimmer
|_modulated)
i
(C58).
6
LW
Repeat
steps
2,
3,
4,
and
5
until
no
further
improvement
can
be
made.
|
Same
as
step
2.
Exactly
510
kHz,
[Show
end
of
dial.
Same
as
step
2.
Adjust
the
MW
local
7
|
MW
(400
Hz,
30%,
AM
(maximum
capac-
oscillator
coil
(L10).
Band
modulated)
ity).
Coverage
|
Same
as
step
2.
Exactly
1650
kHz.
High
end
of
dial.
|
Same
as
step
2.
Adjust
the
MW
local
8
MW
(400
Hz,
30%,
AM
(minimum
capac-
oscillator
trimmer
modulated)
|
ity).
(C69).
Same
as
step
2.
Exactly
600
kHz.
|
600
kHz.
Same
as
step
2.
Adjust
the
MW
9
|
MW
(400
Hz,
30%,
AM
|
i
bar
antenna
coil
(L7).
modulated).
See
|Note
Aj
.
Tracking : 4 2 4
Same
as
step
2.
Exactly
1400
kHz.
1400
kHz.
Same
as
step
2.
Adjust
the
MW
10
MW
(400
Hz,
30%,
AM
antenna
trimmer
modulated)
|
L
(C56).
11
i
MW
Repeat
steps
7,
8,
9
and
10
until
no
further
improvement
can
be
made.
Refer
to
Figure
26-3.
Exactly
5.85
MHz.
Low
end
of
dial.
|
Same
as
step
2.
Adjust
the
SW
local
12
sw
(400
Hz,
30%,
AM
(maximum
capac-
oscillator
coil
(L11).
Band
modulated)
|
ity)
——
4
Coverage
Same
as
step
12.
Exactly
18.5
MHz.
High
end
of
dial.
Same
as
step
2.
Adjust
the
SW
local
13
SW
(400
Hz,
30%,
AM
(minimum
capac-
oscillator
trimmer
modulated)
|
ity)
(C67).
|
|
T
Same
as
step
12.
Exactly
6.5
MHz.
|
6.5
MHz.
Same
as
step
2.
Adjust
the
SW
14
SW
(400
Hz,
30%,
AM
antenna
coil
(L8).
modulated)
++ Tracking | +
Same
as
step
12.
Exactly
16
MHz.
16
MHz.
Same
as
step
2.
Adjust
the
SW
15
SW
{400
Hz,
30%,
AM
antenna
trimmer
modulated) ’ (C54).
see
i
i
it
16
|
SW
|
Repeat
steps
12,
13,
14
and
15
until
no
further
improvement
can
be
made.
|
Check the alignment of the receiver antenna coil by requires less inductance. Change loop inductance by sliding the
bringing a piece of ferrite (such as a coil slug) near the antenna bobbin toward the center of ferrite core to increase induct-
loop stick, then a piece of brass. If ferrite increases output, ance, or away to decrease inductance.
loop requires more inductance. If brass increases output, loop
—20—

Sharp GF-575H Specifications

General

Brand	Sharp
Model	GF-575H
Category	Stereo System
Language	English