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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.
Horizontal noise appears or the
characters look blurred.
The screen displays abnormally.
An after image appears when the
monitor is turned off.
34
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.
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
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