Harman Kardon AP2500 Owners Manual - Page 7

TROUBLESHOOTING

This

unit

is

designed

for

trouble

-free

operation;

most

problems

users

encounter

are

due

to

operating

errors.

So

if

you

have

a

problem,

first

check

this

list

for

a

possible

solution.

If

the

problem

persists,

consult

your

authorized

Harman

Kardon

service

center.

Problem

Probable

Cause

The

Power

indicator

does

not

light

up

when

the

POWER

switch

is

pressed.

Remedy

■

The

power

cord

is

not

plugged

in.

■

Plug

in

the

power

cord

securely.

The

Power

indicator

lights

up,

but

no

sound

is

heard.

Sound

is

not

heard

from

the

speaker

system

on

one

side.

When

listening

to

stereo

sound,

the

left

and

right

sounds

are

reversed.

■

The

TAPE

MONITOR

selector

is

in

the

Tape

1/Copy

or

Tape

2

position.

■

The

SOURCE

selection

was

not

made

properly.

■

The

speaker

wires

are

disconnected

or

broken.

■

The

power

amplifier

is

turned

off.

■

Set

the

TAPE

MONITOR

selector

to

the

Source

position.

■

Set

the

SOURCE

selector

to

the

proper

position

for

the

desired

program

source.

■

Check

the

speaker

wires

and

connect

them

correctly.

■

Turn

on

the

power

amplifier.

■

The

connection

of

speaker

wires

is

incorrect

or

incomplete.

■

The

connection

wires

to

other

equipment

are

disconnected.

■

Check

the

speaker

wires

for

disconnection

or

breaking

and

reconnect

them

correctly.

■

Check

the

wires

for

disconnection

and

connect

them

correctly.

■

The

left

and

right

speaker

wires

are

reversed.

■

The

left

and

right

wires

connected

to

other

equipment

are

reversed.

■

Check

the

speaker

wires

and

connect

them

correctly.

■

Check

the

wires

to

other

equipment

and

connect

them

correctly.

When

playing

a

turntable,

a

low-

pitched

noise

("hum"

or

"buzz")

is

heard.

■

The

ground

wire

of

the

turntable

is

disconnected.

■

The

connections

of

the

turntable

wires

are

incorrect

or

incomplete.

■

The

ground

wire

is

not

run

along

side

the

phono

cables.

■

Make

the

ground

wire

connection

correctly.

■

Insert

the

turntable

wires

into

the

PHONO

jacks

of

this

unit

securely.

■

Run

the

ground

wire

along

side

the

phono

cables.

When

increasing

the

volume

level

■

"Howling"

is

created

by

the

speakers

while

playing

a

turntable,

an

and

turntable.

undesirable

prolonged

sound

■

Too

much

low

frequency

sound

is

(howling)

is

heard.

present.

■

Place

the

speakers

further

away

from

the

turntable.

■

Place

the

turntable

on

a

more

solid

surface.

Sound

quality

is

poor.

■

Input

components

have

not

been

set

up

correctly.

■

Sound

is

distorted

due

to

input

over-

loading

by

a

high

level

source.

■

Check

the

antenna

of

the

tuner,

cartridge

of

the

turntable,

or

head

of

the

tape

deck,

etc.

and

make

corrections

as

needed.

■

Set

the

GAIN

switch

to

the

"-10dB"

position.

5

Harman Kardon AP2500 Owners Manual - Page 7

Troubleshooting

Page 7 highlights