Dell 4647115 appendix Common Problems, Common Symptoms What You Experience Possible Solutions

Dell P170S/P190S Flat Panel Monitor User's Guide

4.Carefully inspect the screen for abnormalities.

5.Press the + (button 4) key on the front panel again. The color of the screen changes to red.

6.Inspect the display for any abnormalities.

7.Repeat steps 5 and 6 to inspect the display in green, blue, and white colored screens.

The test is complete when the white screen appears. To exit, press the + (button 4) again.

If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the monitor is functioning properly. Check the video card and computer.

OSD Warning Messages

For OSD-related issues, see OSD Warning Messages.

Common Problems

The following table contains general information about common monitor problems that you might encounter and the possible solutions.

Common Symptoms	What You Experience	Possible Solutions
No Video/Power LED off	No picture	Ensure that the video cable connecting the monitor and the computer is properly connected and
		secure.
		Verify that the power outlet is functioning properly using any other electrical equipment.
		Ensure that the power button is depressed fully.
		Ensure that the correct input source is selected via the Input Source Select button.
No Video/Power LED on	No picture or no brightness	Increase brightness & contrast controls via OSD.
		Perform monitor Self Test Feature Check.
		Check for bent or broken pins in the video cable connector.
		Run the built-in diagnostics.
Poor Focus	Picture is fuzzy, blurry, or ghosting	Perform Auto Adjust via OSD.
		Adjust the Phase and Pixel Clock controls via OSD.
		Eliminate video extension cables.
		Reset the monitor to Factory Settings.
Shaky/Jittery Video	Wavy picture or fine movement	Perform Auto Adjust via OSD.
		Adjust the Phase and Pixel Clock controls via OSD.
		Reset the monitor to Factory Settings.
		Check environmental factors.
		Relocate the monitor and test in another room.
Missing Pixels	LCD screen has spots	Cycle power on-off.
		Pixel that is permanently off is a natural defect that can occur in LCD technology.
		Run the built-in diagnostics.
Stuck-on Pixels	LCD screen has bright spots	Cycle power on-off.
		Pixel that is permanently off is a natural defect that can occur in LCD technology.
		Run the built-in diagnostics.
Brightness Problems	Picture too dim or too bright	Reset the monitor to Factory Settings.
		Auto Adjust via OSD.
		Adjust brightness & contrast controls via OSD.
Geometric Distortion	Screen not centered correctly	Reset the monitor to Factory Settings.
		Auto Adjust via OSD.
		Adjust brightness & contrast controls via OSD.
Horizontal/Vertical Lines	Screen has one or more lines	Reset the monitor to Factory Settings.
		Perform Auto Adjust via OSD.
		Adjust Phase and Pixel Clock controls via OSD.
		Perform monitor Self Test Feature Check and determine if these lines are also in self-test mode.
		Check for bent or broken pins in the video cable connector.

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