HP LD4201 User Manual page 95

Problem
Unknown
Product
message
appears when
the display is
connected.
Key Lock On
message
appears when
pressing the
Menu button.
The screen
looks abnormal;
screen position
is wrong.
Lines appear on
the background
screen.
Horizontal noise
appears or the
characters look
blurred.
The screen
displays
abnormally.
An after image
appears when
the display is
turned off.
No sound.
Sound is too
dull.
Sound is too
low.
Screen has
poor color
resolution (16
colors).
Screen color is
unstable or
mono colored.
82 Appendix A Troubleshooting
2nd Draft
Possible cause Solution
Display driver is Install the display driver, which is provided with the display or download from the HP
not installed. website www.hp.com.
See if the Plug and Play function is supported by referring to the video card user
manual.
Key Lock The control locking function prevents unintentional OSD setting changes. To unlock the
function is controls, simultaneously press the Menu button and right arrow
turned on. seconds. (You cannot set this function using the remote control buttons. You can set
this function with the display only.)
Screen is out of D-sub analog signal - press the AUTO button on the remote control to automatically
adjustment. select the optimal screen status that fits into the current mode.
Check that the video card resolution and frequency are supported by the display. If the
frequency is out of range, set to the recommended resolution in the Control Panel
Display
Screen is out of D-sub analog signal - press the AUTO button on the remote control to automatically
adjustment. select the optimal screen status that fits into the current mode.
Screen is out of D-sub analog signal - press the AUTO button on the remote control to automatically
adjustment. select the optimal screen status that fits into the current mode.
Using an The proper input signal is not connected to the signal port. Connect the signal cable
incorrect input that matches with the source input signal.
signal.
Using a fixed If you used a fixed image for a long time, the pixels might be damaged. Use a screen-
image that is saver function or set the OSD menu to the ISM Method.
too long.
Audio cable not Check that the audio cable is properly connected.
connected.
Adjust the volume.
Check if the sound is set properly.
Equalizer is not Select the appropriate sound equalize.
balanced.
Sound needs Adjust the volume by pressing the volume buttons on the remote control.
adjusting.
Color is not set Set the number of colors to more than 24 bit (true color). Select Control Panel
correctly. Display
Signal cable or Check the connection status of the signal cable, or reinsert the media player/computer
video card video card.
connection is
loose.
Settings of the operating system.
Settings Color quality in the operating system.
button for several
ENWW