Harman Kardon TU920 Owners Manual - Page 7

TROUBLESHOOTING

CHECKLIST

Most

of

the

problems

consumers

have

with

their

high

fidelity

systems

are

due

to

incorrect

operation.

If

this

unit

does

not

operate

as

you

intended,

first

check

the

items

in

the

fol

lowing

checklist.

Also

check

other

related

components

such

as

the

ampl

ifier,

speakers

and

other

electrical

equipment

you

use

with

this

tuner.

If

a

problem

persists

even

though

you

have

done

as

suggested

in

the

checklist,

consult

your

authorized

Harman

Kardon

service

station.

Problem

Cause

Remedy

The

STATION

DISPLAY

does

not

display

frequency

when

the

"POWER"

switch

is

pressed.

• The

power

cord

is

not

plugged

in.

•

The

power

cord

is

plugged

into

a

receptacle

that

is

not

"live".

•

Plug

in

the

power

cord

securely.

•

Plug

the

power

cord

into

a

"live"

receptacle.

No

sound

is

heard.

•

The

tuned frequency

does

not

carry

a

broadcast.

•

The

muting

function

is

active

and

the

signal

strength

is

weak.

•

The

function

switch

or

speaker

switch

of

the

ampl

ifier

is

not

set

in

the

correct

posi-

tion.

• The

connection

wires

are

disconnected

or

broken.

•

Tune

to

a

broadcasted

station.

•

Depress

the

"mode"

switch

to

the

"mono"

position,

and

tune

using

the

manual

method.

•

Read

the

owner's

manual

of

the

amplifier

and

operate

it

correctly.

•

Check

the

connection

wires

and

connect

them

correctly.

FM

sound

has

a

large

amount

of

interference.

The

"STEREO"

display

is

not

completely

i

l

luminating.

The

"TUNED"

indicator

does

not

illuminate.

Sound

distorts

and/or

the

vol-

ume

level

becomes

low.

•

Incorrect

connection

to

the

antenna.

•

Poor

location

and/or

direction

of

the

an-

tenna.

•

Transmitting

station

is

too

far

away.

•

Multi

-path

distortion

is

being

caused

by

the

mutual

interference

of

broadcast

signals

received

directly

from

the

transmitting

sta-

tion

(direct

waves)

and

signals

being

re-

flected

from

nearby

bui

ldings

or

mountains

(reflected

waves).

•

Check

the

antenna

connection

wires

and

connect

them

correctly.

•

Try

changing

the

location,

height

and/or

direction

of

the

antenna.

•

If

an

indoor

antenna

is

being

used,

change

to

an

outdoor

antenna.

•

Use

a

more

directional

antenna.

A

buzzing

or

hissing

noise

is

produced

continuously

or

in-

termittently.

•

Caused

by

the

"discharge

phenomenon"

and

the

"osci

l

lation

phenomenon"

of

nearby

electric

appliances

(such

as

flu-

orescent

lights,

TV,

motors,

etc.).

•

Place

this

unit

further

away

from

these

types

of

electric

appliances.

•

Instal

l

noise

filters

on

the

electric

appl

i-

ances.

Broadcasting

cannot

be

preset.

•

The

PRESET

button

is

not

pressed

while

the

"memory"

switch

is

illuminated.

•

Press

the

PRESET

button

whi

le

the

"memory"

switch

is

i

lluminating.

Station

selection

cannot

be

made

by

using

the

PRESET

button.

• The

power

cord

has

not

been

plugged

in

for

one

week

or

more,

and

the

memory

has

been

erased.

•

Set

the

preset

memory

again.

6

Harman Kardon TU920 Owners Manual - Page 7

Troubleshooting, Checklist

Page 7 highlights