Troubleshooting; Solving Common Problems - Philips HP L1502 Service Manual

10
HP L1502
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Solving Common Problems

The following table lists possible problems, the possible cause of each problem, and the recommended solutions.
Problem
Screen is blank.
Image appears
blurred, indistinct, or
Too dark.
Image is not
Centered.
Check Video
Cable is displayed
on screen.
(Input Signal Out of
Range) is displayed
on screen.

Troubleshooting

Possible Cause
Power cord is disconnected.
Power switch is turned Off.
Video cable is improperly connected.
Screen blanking utility is active.
Brightness and contrast
are too low.
Position may need
Adjustment.
Monitor video cable is
disconnected.
Video resolution and/or
refresh rate are set
higher than what your
monitor supports.
Solution
Connect the power cord.
Turn on the power.
Connect the video cableproperly.
Depress any key on the keyboard or move
The mouse to inactivate the screen blanking
Utility.
Press the Minus button on
the monitor front panel to
auto-adjust the screen. If that
Does not work, press the
Menu button to open the
Basic OSD Menu, and
adjust the brightness and
contrast scales as needed.
When OSD is inactive,press-(minus
button) to auto-adjust the screen image.
Press the Menu button to access the
Advanced OSD menu. Select Image
Control/Horizontal Position or Vertical
Position to adjust the horizontal or vertical
position of the image.
Connect the 15-pin monitor video cable
to the VGA connector on the computer.
Be sure that the computer
power is off while: connecting the video
Cable.
Restart your computer and enter Windows
Safe Mode by pressing the F6 Function
key when the computer starts to boot up.
Change your settings to a supported
setting. Restart your computer so that the
new settings take effect.