Operating instructions
property
in
that the majority of noise is out of phase information. This switch reduces the amount of high
frequency separation between the left and right channels, and
in
doing
so,
reduces the noise without
sacrificing fidelity.
SECTION
5
THE
CARE
AND
FEEDING
OF
YOUR
GFT·555
Great care has been taken by ADCOM to assure that your tuner is as flawless
in
appearance as it
is electronically. The front panel is heavy gauge, high-grade anodized aluminum, bead-blasted for
durability and beauty. If the front panel should become fingerprinted
or
smeared, it can be cleaned with
a damp, soft cloth.
UNDER NO CIRCUMSTANCES SHOULD A STRONG
OR
ABRASIVE CLEANER SUCH
AS
SCOURING
POWDER
OR
OVEN CLEANER
BE
USED
ON
ANY
PART
OF THE TUNER.
FUSE
8
The tuner is protected
by
a line fuse on the rear panel. If the power is switched
ON
and the display
on the front panel does not illuminate after a few seconds, shut off the tuner, unplug the AC line cord
from the power outlet, and check the
AC
line fuse. If the fuse has opened, replace it ONLY with a fuse
of equal value after carefully checking to determine the cause of the failure. If the fuse blows
immediately after being replaced, a component failure must be suspected and no further attempts to
replace the fuse should be made.
REPLACEMENT WITH AN INCORRECT FUSE OR ONE OF A HIGHER
RATING
WILL NOT PROTECT
THE TUNER AND WILL VOID THE WARRANTY.
SECTION
6
IF
YOU
HAVE
A
PROBLEM
OR
QUESTION
The following check list wi! assist in the correction of most problems you may encounter with your
tuner. Before looking through this list check all of your connections. If the connections
have
been properly
made,
check the
AC
line fuse to
be
sure that it is not open
(See
Section 5
above).
SYMPTOM
POSSIBLE
CAUSE
AN
0
SOLUTION
No Audio Output
-AC
line cord not plugged in.
Poor connection between preamplifier and tuner. Make sure all
plugs
are
pushed in all the
way.
FM
Scan Won't Stop
-Antenna
not properly connected. Check your connections.
FM Stereo indicator won't light
-Mute/Mono
switch depressed.
-Station
is broadcasting in Mono.
-Distant
station is too weak to be received in stereo.
excessive Noise
or
Buzzing
-Weak
signal being received. Adjust
FM
antenna
or
install
an
sound with program
outside FM antenna
-On
the AM band, fluorescent lights
or
electrical appliances causing
interference.
Try
a homemade AM antenna
as
described
in
Section
3.
Signal Strength Meter unstable
-Antenna
not oriented correctly. Try a different position for optimum
signal strength.
Note: This problem is occasionally accompanied
by
a pulsing
sound. If no improvement can be made
by
reorienting the antenna,
deactivate the muting circuit by depreSSing the Mute/Mono switch.
ADCOM has a technical service department to answer all questions pertinent to the installation
and operation of your unit. Please feel free to write
or
call us in the event
of
difficulty, and we shall
endeavor to offer prompt advice. If your problem can not be resolved through
our
combined efforts, we
may wish to refer you to
an
authorized repair agency,
or
we may prefer to authorize return
of
the unit to the
factory.
To
aid
'US
in
directing you to a convenient service station, it would be helpful
if
you indicate which
major city is accessible to your home. Please address inquiries to:
5