Harman Kardon TD4400 Owners Manual - Page 10

MAINTENANCE

Cleaning

the

Tape

Heads

Tape

heads

must

be

cleaned

periodically

to

remove

tape

particles,

which

gradually

build

up

on

the

heads,

impairing

sound

quality

and

increasing

wear

on

tapes.

Heads

may

be

cleaned

in

either

of

two

ways:

1.

Slightly

dampen

a

cotton

swab

in

isopropyl

alcohol

and

gently

rub

the

surfaces

of

each

tape

head.

Use

a

second

dampened

swab

to

clean

other

surfaces

coated

with

tape

material.

Repeat

this

cleaning

every

30

tapes.

2.

Use

a

tape

head

cleaning

kit,

which

comes

in

the

form

of

a

tape

cassette,

and

is

simply

inserted

into

the

deck.

Follow

the

instructions

included

with

the

kit.

Demagnetization

Tape

heads

and

other

internal

parts

gradually

pick

up

magnetic

fields,

which

can

add

noise

to

your

tapes

and

even

partially

erase

them.

To

prevent

this

problem,

tape

heads

should

be

periodically

demagnetized,

using

either

of

two

devices:

1.

A

battery

-powered

demagnetizer

is

easiest

to

use.

It

comes

in

the

form

of

a

tape

cassette

and

is

simply

inserted

into

the

deck.

Be

certain

to

use

this

demagnetizer

as

frequently

as

its

instructions

recommend.

2.

A

handheld

demagnetizer,

which

plugs

into

a

wall

socket,

is

much

more

effective,

since

it

generates

a

stronger

demagnetization

field.

For

the

same

reason,

it

must

be

used

very

carefully,

or

it

may

do

more

harm

than

good.

Before

buying

or

using

one,

please

consult

your

Harman

Kardon

dealer.

Also

read

and

follow

carefully

the

instructions

included

with

the

unit,

and

be

sure

no

recorded

tapes

are

near

the

demagnetizer

when

it

is

turned

on.

Care

of

Tapes

1.

Store

cassettes

in

their

cases,

in

a

location

away

from

direct

sunlight,

excessive

heat

and

high

humidity.

2.

Avoid

placing

a

tape

near

a

television

set

or

loudspeaker;

their

magnetic

fields

can

partially

erase

the

tape.

3.

To

prevent

accidental

erasure

of

a

tape,

use

a

small

screwdriver

to

remove

the

two

square

tabs

located

on

the

side

of

the

cassette

opposite

the

exposed

tape.

With

these

tabs

removed,

the

tape

cannot

be

re-

recorded.

If

you

later

wish

to

re-

record

an

erasure

-protected

tape,

simply

cover

the

small

holes

with

adhesive

tape.

4.

Do

not

use

old

cassettes

whose

tape

no

longer

moves

smoothly

from

reel

to

reel.

They

may

jam

and

damage

your

deck.

Harman Kardon TD4400 Owners Manual - Page 10

Maintenance

Page 10 highlights