Harman Kardon TA260 Owners Manual - Page 10

stereophonic

reproduction

and

at

times

will

actually

eliminate

or

shift

certair

instruments

from

their

proper

perspective

in

the

orchestra.

AM

and

FM

Tuning

Controls:

These

controls

are

located

on

the

front

panel

and

are

used

to

tune

for

AM

or

FM

stations.

For

simulcast

AM

-FM

stereo

reception,

it

is

necessary

to

sepa•

rately

tune

the

AM

and

FM

sections.

Set

the

FUNCTION

SELECTOR

switch

tc

AM

and

tune

for

the

desired

station.

Now

set

the

FUNCTION

SELECTOR

tc

FM

and

tune

for

the

corresponding

FM

station.

Turn

the

FUNCTION

SE-

LECTOR

to

AM

-FM

to

operate

both

tuners

simultaneously.

Tuning

Indicators:

For

ease

and

accuracy

in

tuning,

the

TA260

incorporates

two

electronic

eyc

tuning

indicators.

When

locating

a

station,

tune

for

minimum

dark

space

between

the

green

bars.

MAINTENANCE

AND

REPAIRS

Hum

and

Noise:

In

any

high

fi

delity

installation,

hum

may

be

caused

by

the

interconnection

of

a

record

player,

tuner

and

amplifier,

as

a

result

of

the

cables

and

different

grounds.

If

hum

is

experienced

with

the

TA260,

disconnect

everything

but

the

speakers

from

the

receiver.

If

hum

persists,

reverse

the

AC

line

cord.

Also

per-

form

the

balancing

adjustments

outlined

in

a

later

paragraph.

Plug

in

the

record

player

and

if

hum

appears,

reverse

the

record

player

power

plug

and

connect

a

single

lead

from

the

record

player

chassis

to

a

good

ground

point

on

the

chassis

of

the

TA260.

Connect

your

other

devices

in

this

manner.

CAUTION:

Hum

may

be

also

induced

by

defective

connecting

cables

or

by

running

these

cables

too

close

to

a

strong

AC

fi

eld.

Output

Tube

Balancing

Controls:

There

are

two

OUTPUT

TUBE

BALANCING

controls

located

between

the

output

tubes.

These

controls

are

factory

adjusted

and

should

not

be

touched

unless

tubes

are

changed.

If

adjustment

is

necessary

follow

the

procedure

listed

below.

1.

Set

the

LOUDNESS

control

to

minimum.

2.

Slowly

rotate

each

BALANCING

control

for

minimum

hum.

3.

If

the

hum

level

is

not

readily

apparent,

set

the

control

to

the

mid

-position.

4.

For

absolute

accuracy

use

an

IM

analyzer

and

set

for

lowest

IM

distortion.

Fuse:

The

TA260

is

fused

in

the

AC

primary

to

prevent

damage

to

tubes

an

d

components.

The

value

of

the

fuse

is

4

AMP,

Type

MTH4

and

should

be

replaced

only

with

one

of

the

same

rating.

Replacing

with

a

fuse

of

a

higher

rating

will

not

protect

the

instrument

and

may

result

in

severe

damage,

which

will

not

be

covered

by

the

factory

warranty.

Tube

Checking

and

Service:

It

is

recommended

to

test

the

tubes

of

this

receiver

every

twelve

months

in

order

to

insure

optimum

performance.

When

a

tube

is

changed

in

the

tuner

por-

tion,

it

may

be

necessary

to

have

the

instrument

recalibrated

and

realigned.

If

this

instrument

should

not

perform

properly

during

the

fi

rst

year

after

date

of

purchase,

contact

the

factory

for

instructions.

DO

NOT

have

it

repaired

locally

without

fi

rst

contacting

Harman-Kardon

for

advise.

The

factory

has

many

authorized

warranty

service

stations

in

the

United

States,

and

for

the

station

nearest

you,

please

write

or

call

our

Customer

Service

Department,

Harrnan-

Kardon,

Inc.,

Plainview,

New

York.

Be

sure

to

include

the

model

and

serial

number

of

the

unit.

A

brief

description

of

your

other

components

is

often

of

help

in

answering

your

questions.

Harman Kardon TA260 Owners Manual - Page 10

Tuning, Controls, Indicators, MAINTENANCE, REPAIRS, Noise, Output, Balancing, Checking, Service

Page 10 highlights