LG F920B User Manual download pdf (Page 13)

A12

Troubleshooting

Check

the

following

before

calling

for

service.

No

image

appears

Is

the

power

cord

of

the

monitor

connected?

Is

the

power

indicator

light

on?

Is

the

power

on

and

the

power

indicator

green?

Is

the

power

indicator

amber?

Do

you

see

an

"OUT

OF

FREQUENCY"

message

on

the

screen?

Do

you

see

a

"SELF

DIAGNOSITICS"

message

on

the

screen?

Check

and

see

if

the

power

cord

is

connected

properly

to

the

power

outlet.

Press

the

Power

button.

Adjust

the

brightness

and

the

contrast.

If

the

monitor

is

in

power

saving

mode,

try

moving

the

mouse

or

pressing

any

key

on

the

keyboard

to

bring

up

the

screen.

This

message

appears

when

the

signal

from

the

PC

(video

card)

is

out

of

horizontal

or

vertical

frequency

range

of

the

monitor.

See

the

'Specifications'

section

of

this

manual

and

configure

your

monitor

again.

This

message

appears

when

the

signal

cable

between

your

PC

and

your

monitor

is

not

connected.

Check

the

signal

cable

and

try

again.

Is

the

vertical

frequency

less

than

70Hz

or

is

your

monitor

set

to

the

interlaced

mode?

Do

you

have

any

magnetic

material

such

as

adapter,

or

high-

voltage

line

near

to

your

monitor?

Do

you

hear

a

"~ding"

sound

while

the

monitor

is

flickering?

Set

the

vertical

frequency

to

72Hz

or

higher,

and

consult the

video

card

user

manual

for

instructions

on

converting

to

a

non-interlaced

mode.

(You

can

set

this

option

under

the

Display

icon

of

the

Control

Panel.)

Remove

magnetic

sources,

such

as

power

adapters,

speakers,

or

high-voltage

lines,

away

from

the

monitor.

Use

the

normal

degaussing

function.

This

function

clears

the

screen

and

reduces

any

screen

blur that

may

occur

due

to

the

surrounding

magnetic

field.

The

screen

may

flicker

for

about

5

seconds,

accompanied

by

a

"~ding"

sound.

The

screen

is

flickering.

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