Harman Kardon VPM500 Owners Manual - Page 17

APPENDIX

1

MAINTAINING

AND

TROUBLESHOOTING

THE

VPM500

Monitor

Care

Make

sure

that

the

VPM500's

ventilation

holes

are

not

blocked

and

avoid

covering

the

unit

with

decorative

scarves,

doilies

or

newspapers.

We

do

not

recommend

using

ultrasonic

humidifiers

in

the

same

room

with

the

VPM500

since

the

microscopic

water

droplets

it

produces

can

evaporate

on

the

optical

surfaces

of

the

projector

and

cause

deposits.

Clean

the

outer

surfaces

of

the

VPM500's

case

only

with

a

damp

soft

cloth.

Avoid

detergents

and

spray

cleaners

which

can

attack

the

housing

material.

If

dust,

popcorn

or

cigarette

ashes

make

their

way

onto

the

recessed

control

panel,

remove

them

with

a

vacuum

cleaner,

using

the

brush

attachment,

Extra

special

care

should

be

taken

when

cleaning

the

front

optical

surface

of

the

three

VPM500

projection

lenses.

Treat

them

as

you

would

any

precision

lens:

First

carefully

dust

the

surface

to

remove

abrasive

particles.

Then

use

a

slightly

damp

facial

tissue

or

camera

lens

cleaning

paper

(not

a

paper

towel!)

in

a

gentle

rotary

motion

to

remove

any

remaining

deposit.

Screen

Care

Avoid

touching

the

screen.

If

fingerprints,

dust

or

smoke

deposits

collect

on

it,

use

a

solution

of

isopropyl

alcohol

or

a

clear

window

cleaner

such

as

"Windex"

with

a

soft,

lint

-free

rag.

Consult

the

instructions

which

came

with

the

screen

for

further

maintenance

tips.

Remote

Care

The

VPM500's

remote

control

unit

is

powered

by

four

AAA

batteries.

If

your

VPM500

stops

responding

to

remote

com-

mands,

or

you

are

required

to

closely

aim

the

remote

unit

to

get

any

response,

it's

probably

time

to

replace

the

batteries.

To

open

the

battery

compartment,

slide

the

cover

in

the

direction

shown

by

the

arrow

on

its

top

portion.

Remove

the

old

batteries

and

replace

them

with

good

quality

alkaline

cells,

taking

care

to

insert

them

correctly

according

to

the

+

and

—

symbols

on

the

bottom

of

the

battery

compartment.

Troubleshooting

No

picture.

•

Is

the

VPM500

on,

both

at

the

control

panel

and

on

the

remote

by

pressing

VIDEO

A?

•

Is

your

video

source

connected

to

VIDEO

A?

•

Is

the

video

source

turned

on

and

pro-

ducing

a

signal?

•

Are

all

connecting

cables

secured?

No

sound.

•

Is

the

video

sound

source

connected

to

AUDIO

INPUT

A?

•

Is

the

VPM500

volume

turned

up?

•

Is

the

MUTE

button

pressed

by

accident?

•

Is

the

video

sound

source

properly

hooked

up?

•

Are

the

speakers

connected

and

free

of

shorts?

•

If

you

are

using

your

stereo

amplifier,

is

it

turned

on?

Is

its

input

selector

on

the

correct

source?

Poor

picture.

•

Is

the

VPM500

and

its

screen

properly

aligned?

•

Have

you

reconverged

the

picture

lately.

If

not,

do

so.

•

Have

the

COLOR/TINT/BRIGHT-

NESS

controls

been

adjusted?

•

Is

your

video

source

in

good

working

order?

The

VPM500's

superb

resolu-

tion

powers

can

magnify

deficiencies

you

may

not

have

previously

noticed.

Harman Kardon VPM500 Owners Manual - Page 17

Appendix, Maintaining, Troubleshooting, Vpm500

Page 17 highlights