Troubleshooting - Philips HUDSON IV 150C5 Service Manual

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6
150C5 LCD
Go to cover page
This page deals with problems that can be corrected by the user.
Common Problems
Having this problem?
No Picture
(power LED not lit)
No Picture
(Power LED is amber or yellow)
Screen says
Screen says
AUTO button not working properly
Image Problems
Having this problem?
Display position is incorrect
Image vibrates on the screen
Vertical flicker appears
Horizontal flicker appears
The screen is too bright or too dark
An after-image appears
An after-image remains after the power has
been turned off.
Green, red, blue, and white dots remains
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Troubleshooting

Check these items
· Make sure the power cord is plugged into the power outlet
and into the back of the monitor.
· First, ensure that the power button on the front of the monitor is in
the OFF position, then press it to the ON position
· Make sure the computer is turned on.
· Make sure the signal cable is properly connected to your computer.
· Check to see if the monitor cable has bent pins.
· The Energy Saving feature may be activated
· Make sure the monitor cable properly connected to your computer.
(Also refer to the Quick Set-Up Guide).
· Check to see if the monitor cable has bent pins,
· Make sure the computer is turned on.
· Make sure the vertical sync of input signal is within the range of
56--75Hz.
· Change the refresh rate to 56--75Hz within 10 minutes.
· Re-power on monitor to start over again if you failed to change the
refresh rate within 10 minutes.
· The Auto Function is designed for use on standard Macintosh or
IBM-compatible PCs running Microsoft Windows.
· It may not work properly if using nonstandard PC or video card.
Check these items
· Press the AUTO button
· Adjust the image position using the Horizontal Position
and/or Vertical Position in OSD Main Controls.
· Check that the signal cable is properly connected to the
graphics board or PC.
· Press the AUTO button
· Eliminate the vertical bars using the Clock Adjustment of
VIDEO NOISE in OSD Main Controls.
· Press the AUTO button
· Eliminate the horizontal bars using the Phase
Adjustment of VIDEO NOISE in OSD Main Controls.
· Adjust the contrast and brightness on OSD Main Controls. (The
backlight of the LCD monitor has a fixed life span. When the
screen becomes dark or begins to flicker, please contact your
dealer).
· If an image remains on the screen for an extended period of time,
it may be imprinted in the screen and leave an after-image. This
usually disappears after a few hours.
· This is characteristic of liquid crystal and is not caused by a
malfunction or deterioration of the liquid crystal. The after-image
will disappear after a period of time.
· The remaining dots are normal characteristic of the liquid crystal
used in today s technology.