Hitachi FT-5500 Instruction Manual page 10

WHAT TO DO IF?
There can be a variety of problems due to the mishandling of the TUNER.
When a problem occurs, please check the table below which describes possible problems occurring with
your TUNER. Since the TUNER is completely checked and adjusted before shipping, there are no user ser-
viceable and adjustable parts inside. But if the TUNER is not operating correctly and you are unable to
restore normal operation by following the detailed procedure in the table below, do not remove the cover
of the set or attempt any further adjustments. Unplug the set and contact your dealer or nearest HITACHI
service station.
© Connect power cord plug properly to
power outlet.
Faulty connection with power outlet.
© Check output cord connections.
© Use tuning keys to change to tuning fre-
quency at which sound is heard.
¢ Tuner's output cords are not connected
1 to amplifier; or their connection is faul-
ty.
e Tuned frequency differs from broad-
casting frequency.
e Faulty connection of AM loop antenna. | 9° Connect cord of AM loop antenna pro-
perly to tuner. (Make sure that the loop
antenna is not disconnected even if an
outdoor AM antenna has been con-
nected.)
# © Noise from an electrical appliance. © Connect an extension cord (available
| ¢ Noise from a TV set. from your dealer) to the AM loop anten-
| © Beat interference from interaction bet- na and try placing the antenna as far
ween adjacent AM broadcasting sta- away from the source of noise (TV set,
tions. fluorescent light, etc.) as possible.
(Where possible, place the antenna out-
doors.)
© Switch off the TV and check. (Noise
may be caused by a TV set in the
neighborhood.) Place the TV set as far
away as possible from the tuner.
© The trouble lies with in the AM broad-
cast itself and as such is very hard to
remedy.
# © This is caused by the effects of high-
tension wires, the state of the power
supply or by the effects of another elec-
trical appliance.
©The hum is sometimes suppressed by
reversing the connection of the power
plug.
* Caused by the ignition of passing
automobiles. The noise limiter circuit
which is built into the tuner does not
work in weak-signal areas at a distance
from the transmitting antenna and so
the noise level is increased.
olf you are using the accessory feeder
antenna, change over to an outdoor FM
antenna. When erecting your outdoor
antenna, install it as far away from
roads as possible so that the effects of
extraneous noise are reduced.
He input signals at antenna terminal are j © Erect outdoor FM antenna.
weak.
@ @ This phenomenon is known as crosstalk
and in small quantities this is quite nor-
mal.
€ ¢ Malfunction in the microcomputer caus-
ed by static electricity.
© Disconnect the power plug from the
power outlet, wait 5 seconds and then
connect the power plug to the power
outlet properly.
* See above. © Perform presetting again.
@)| ¢ Disconnected antenna.
e Weak signals received at antenna ter-
minal.
©Connect the antenna properly to the
antenna terminal.
oErect an outdoor FM antenna. If
automatic tuning is still not possible, set
the FM tuning switch to MANUAL and
tune in the station manually.