Problem

Possible

Solution

 

cause

 

 

 

 

Key Lock On

Key Lock

The control locking function prevents unintentional OSD setting changes. To unlock the

message

function is

controls, simultaneously press the Menu button and right arrow ► button for several

appears when

turned on.

seconds. (You cannot set this function using the remote control buttons. You can set this

pressing the

 

function with the display only.)

Menu button.

 

 

 

 

 

The screen looks

Screen is out of

D-sub analog signal - press the AUTO button on the remote control to automatically select

abnormal;

adjustment.

the optimal screen status that fits into the current mode.

screen position

 

Check that the video card resolution and frequency are supported by the display. If the

is wrong.

 

 

frequency is out of range, set to the recommended resolution in the Control Panel →

 

 

 

 

Display → Settings of the operating system.

 

 

 

Lines appear on

Screen is out of

D-sub analog signal - press the AUTO button on the remote control to automatically select

the background

adjustment.

the optimal screen status that fits into the current mode.

screen.

 

 

 

 

 

Horizontal noise

Screen is out of

D-sub analog signal - press the AUTO button on the remote control to automatically select

appears or the

adjustment.

the optimal screen status that fits into the current mode.

characters look

 

 

blurred.

 

 

 

 

 

The screen

Using an

The proper input signal is not connected to the signal port. Connect the signal cable that

displays

incorrect input

matches with the source input signal.

abnormally.

signal.

 

 

 

 

An after image

Using a fixed

If you used a fixed image for a long time, the pixels might be damaged. Use a screen-

appears when

image for too

saver function or set the OSD menu to the ISM Method.

the display is

long a period of

 

turned off.

time.

 

 

 

 

No sound.

Audio cable not

Check that the audio cable is properly connected.

 

connected.

Adjust the volume.

 

 

 

 

Check if the sound is set properly.

 

 

 

Sound is too

Equalizer is not

Select the appropriate sound equalize.

dull.

balanced.

 

 

 

 

Sound is too

Sound needs

Adjust the volume by pressing the volume buttons on the remote control.

low.

adjusting.

 

 

 

 

Screen has poor

Color is not set

Set the number of colors to more than 24 bit (true color). Select Control Panel →

color resolution

correctly.

Display → Settings → Color quality in the operating system.

(16 colors).

 

 

 

 

 

Screen color is

Signal cable or

Check the connection status of the signal cable, or reinsert the media player/computer

unstable or

video card

video card.

mono colored.

connection is

 

 

loose.

 

 

 

 

ENWW

Solving common problems 47