Lenovo L2251p manual Manual image setup, Problem Possible cause Suggested action

Table3-2.Troubleshooting(continued)

Problem			Possible cause	Suggested action
Screen is blank		The monitor is in		●	Press any key on the
and power		Standby/Suspen			keyboard or move the
indicator is		d mode			mouse to restore
steady amber or					operation.
flashing green				●	Check the Power
					Options settings on
					your computer.
The power		The video signal		Be sure the video cable is
indicator is		cable is loose or		connected with the
green, but there		disconnected		system properly.
is no image.		from the system
		or monitor.
		The monitor		Adjust the brightness and
		brightness and		contrast setting on the OSD
		contrast are at		menu.
		the lowest
		setting.
One or more of		This is a		If there are more than
the pixels appear		characteristic of		five pixels missing,
discolored		the LCD		contact the Customer
		technology and		Support Center.
		is not an LCD
		defect.
●	Fuzzy lines in	●	Image setup	Adjust the resolution
	text or a blurry		has not been	settings on your system
	image.		optimized	to match the native
●	Horizontal or	●	Your system	resolution for this
	vertical lines		Display	monitor: 1680x1050 at 60
	through the		Properties	Hz.
	image.		setting have
				Perform automatic image
			not been
				setup. If automatic image
			optimized.
				setup does not help,
				perform manual image
				setup.
				When working in the
				native resolution, you
				may find additional
				improvements by
				adjusting the Dots Per
				Inch (DPI) setting on
				your system.

Reference

“Understanding power management” on page 2-6

“Connecting and turning on your monitor” on page 1-4

“Adjusting your monitor image” on page 2-3

Appendix A, “Service and Support,” on page A-1

“Adjusting your monitor image” on page 2-3

“Manual image setup”

“Selecting a supported display mode” on page 2-6

See the Advanced section of your system’s display properties.

Manual image setup

If automatic image setup does not establish the image that you prefer, perform manual image setup.

Note: Have your monitor powered on for about 15 minutes, until the monitor warms up.

1.Press at the bottom of the monitor to open the OSD menu.

2.Use or to select and press to access.

3.Use or to select Clock and Phase adjustment.

Chapter 3. Reference information 3-3