Problem

Possible cause

Solution

 

 

 

Lines appear on

Screen is out of

Adjust using the procedure described in Optimizing analog images on page 46.

the background

adjustment.

 

screen.

 

 

 

 

 

Horizontal noise

Screen is out of

Adjust using the procedure described in Optimizing analog images on page 46.

appears or the

adjustment.

 

characters look

 

 

blurred.

 

 

 

 

 

The screen

Using an

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

displays

incorrect input

that 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 or one of the functions in the ISM Method option of the OSD menu.

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 the Speaker and Audio Source settings in the OSD.

 

 

 

Sound is too

Equalizer is not

Check the audio settings for Balance, Treble, Bass, and Sound Mode.

dull.

balanced.

 

 

 

 

Sound is too

Sound needs

Adjust the volume.

low.

adjusting.

 

 

 

 

Screen has

Color is not set

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

poor color

correctly.

(Personalization →) Display → Settings → Color quality in the operating system.

resolution (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.

 

 

 

 

Black spots

Black spots are

Refer to Display quality and pixel policy on page 59 for more details.

appear on the

characteristics

 

screen.

of the LCD

 

 

panel.

 

 

 

 

The power is

Sleep timer

Check the Schedule submenu of the OSD.

suddenly turned

setting is turned

Check the power control settings.

off.

on, or power is

 

 

interrupted.

 

 

 

 

Power Button

The sleep

Press the MENU and right arrow buttons on the back of the display and hold for 5

Lockout

button on the

seconds.

message

back of the

 

appears.

display is

 

 

disabled.

 

 

 

 

Using Online Technical Support

For online access to technical support information, self-solve tools, online assistance, community forums of IT experts, broad multi-vendor knowledge base, monitoring and diagnostic tools, go to www.hp.com/support

ENWW

Using Online Technical Support 53