Dell 4688513 appendix Product Specific Problems, Universal Serial Bus USB Specific Problems

		NOTE: When using DVI-D input, the positioning adjustments are not available.
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.
		•	Run the built-in diagnostics.
		NOTE: When using DVI-D input, the Pixel Clock and Phase adjustments are not available.
Synchronization Problems	Screen is scrambled or	•	Reset the monitor to Factory Settings.
	appears torn	•	Perform Auto Adjust via OSD.
		•	Adjust Phase and Pixel Clock controls via OSD.
		•	Perform monitor self-test feature check to determine if the scrambled screen appears
			in self-test mode.
		•	Check for bent or broken pins in the video cable connector.
		•	Restart the computer in the safe mode.
Safety-Related Issues	Visible signs of smoke or	•	Do not perform any troubleshooting steps.
	sparks	•	Contact Dell immediately.
Intermittent Problems	Monitor malfunctions on & off	•	Ensure that the video cable connecting the monitor to the computer is connected
			properly and is secure.
		•	Reset the monitor to Factory Settings.
		•	Perform monitor self-test feature check to determine if the intermittent problem occurs
			in self-test mode.
Missing Color	Picture missing color	•	Perform monitor self-test feature check.
		•	Ensure that the video cable connecting the monitor to the computer is connected
			properly and is secure.
		•	Check for bent or broken pins in the video cable connector.
Wrong Color	Picture color not good	•	Change the Color Setting Mode in the Color Settings OSD to Graphics or Video
			depending on the application.
		•	Try different Color Preset Settings in Color Settings OSD. Adjust R/G/B value in Color
			Settings OSD if the Color Management is turned off.
		•	Change the Input Color Format to PC RGB or YPbPr in the Advance Setting OSD.
		•	Run the built-in diagnostics.
Image retention from a static	Faint shadow from the static	•	Use the Power Management feature to turn off the monitor at all times when not in
image left on the monitor for	image displayed appears on		use (for more information, see Power Management Modes).
a long period of time	the screen	•	Alternatively, use a dynamically changing screensaver.

Product Specific Problems

Specific Symptoms	What You Experience		Possible Solutions
Screen image is too small	Image is centered on screen,	•	Check the Scaling Ratio setting in Image Setting OSD.
	but does not fill entire	•	Reset the monitor to Factory Settings.
	viewing area
Cannot adjust the monitor	OSD does not appear on the	•	Turn off the monitor, unplug the power cord, plug back, and then turn on the monitor.
with the buttons on the front	screen
panel
No Input Signal when user	No picture, the LED light is	•	Check the signal source. Ensure the computer is not in the power saving mode by
controls are pressed	green. When you press "+",		moving the mouse or pressing any key on the keyboard.
	"-" or "Menu" key, the	•	Check to make sure Video Source to S-Video, Composite or Component is powered and
	message "No S-Video input		playing video media.
	signal", or "No Composite	•	Check whether the signal cable is plugged in properly. Re-plug the signal cable if
	input signal", or "No		necessary.
	Component input signal"	•	Reset the computer or video player.
	appears
The picture does not fill the	The picture cannot fill the	•	Due to different video formats (aspect ratio) of DVDs, the monitor may display in full
entire screen.	height or width of the screen		screen.
		•	Run the built-in diagnostics.

NOTE: When choosing DVI-D mode, the Auto Adjust function will not be available.

Universal Serial Bus (USB) Specific Problems

Specific Symptoms	What You Experience		Possible Solutions
USB interface is not working	USB peripherals are not	•	Check that your monitor is turned ON.
	working	•	Reconnect the upstream cable to your computer.
		•	Reconnect the USB peripherals (downstream connector).
		•	Switch off and then turn on the monitor again.
		•	Reboot the computer.
		•	Some USB devices like external portable HDD require higher electric current; connect
			the device directly to the computer system.