Hitachi FT-5500 - WHAT TO DO IF? (Troubleshooting); Troubleshooting Guide

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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.

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