HP LD4200tm - Widescreen LCD Interactive Digital Signage Display User Manual page 50

Problem
Check signal cable message appears.
"Unknown Product" message appears
when the monitor 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. Screen is out of adjustment.
Horizontal noise appears or the
characters look blurred.
The screen displays abnormally.
An after image appears when the
monitor is turned off.
42 Appendix A Troubleshooting
Possible Cause
Signal cable is not connected.
Monitor driver is not installed.
Key Lock function is turned on.
Screen is out of adjustment.
Screen is out of adjustment.
Using an incorrect Input signal.
Using a fixed image too long.
Solution
The signal cable between the PC and
monitor is not connected.
Check the signal cable.
Press the INPUT button on the remote
control to check the input signal.
Install the monitor driver, which is
provided with the monitor or download
from the HP Web site
(http://www.hp.com).
See if the plug & play function is
supported by referring to the video card's
user manual.
The control locking function prevents
unintentional OSD setting change due to
careless usage. To unlock the controls,
simultaneously press the Menu button
and ► button for several seconds. (You
cannot set this function using the remote
control buttons. You can set this function
in the monitor only.)
D-sub analog signal - press the AUTO
button on the remote control to
automatically select the optimal screen
status that fits into the current mode. If
the adjustment is not satisfactory, use
the Position OSD menu.
Check that the video card resolution and
frequency are supported by the monitor.
If the frequency is out of range, set to the
recommended resolution in the Control
Panel > Display > Setting menu of the
operating system.
D-sub analog signal - press the AUTO
button on the remote control to
automatically select the optimal screen
status that fits into the current mode. If
the adjustment is not satisfactory, use
the Clock OSD menu.
D-sub analog signal - press the AUTO
button on the remote control to
automatically select the optimal screen
status that fits into the current mode. If
the adjustment is not satisfactory, use
the Phase OSD menu.
The proper input signal is not connected
to the signal port. Connect the signal
cable that matches with the source input
signal.
If you used a fixed image for a long time,
the pixels may be damaged. Use a
screen-saver function.
ENWW