HP LP2275w manual A Troubleshooting, Solving Common Problems, Possible Cause, Solution

A Troubleshooting

Solving Common Problems

The following table lists possible problems, the possible cause of each problem, and the recommended solutions.

Problem	Possible Cause	Solution
Screen is blank.	Power cord is disconnected.	Connect the power cord.
	Power button on front panel of the	Press the front panel power button.
	monitor is turned off.	NOTE: If pressing the power button has no effect, press
		and hold the power button for 10 seconds to disable the
		power button lockout feature.
	Master power switch on rear panel	Turn the master power switch to On.
	of the monitor is turned Off.
	Video cable is improperly	Connect the video cable properly. Refer to Setting Up the
	connected.	Monitor on page 6 for more information.
	Screen blanking is active.	Press any key on the keyboard or move the mouse to
		inactivate the screen blanking utility.
Image appears blurred,	Brightness and contrast are too low.	Press the —/Autobutton on the front panel. If this does not
indistinct, or too dark.		correct the image, press the Menu button to open the OSD
		Menu, and adjust the brightness and contrast scales as
		needed.
Image is not centered	Position may need adjustment.	Press the Menu button to access the OSD menu. Select
		Image Control/Horizontal Position or Vertical Position to
		adjust the horizontal or vertical position of the image.
Check Video Cable is	Monitor video cable is	Connect the appropriate video signal cable between the
displayed on screen.	disconnected.	computer and monitor. Be sure that the computer power is
		off while connecting the video cable.
Input Signal Out of Range.	Video resolution and/or refresh rate	Restart the computer and enter Safe Mode. Change the
Change resolution setting	are set higher than what the monitor	settings to a supported setting (see Recognizing Preset
to 1680 × 1050 @ 60Hz (HP	supports.	Display Resolutions on page 41). Restart the computer
LP2275w Model) or Input		so that the new settings take effect.
Signal Out of Range.
Change resolution setting
to 1920 × 1200 @ 60Hz (HP
LP2475w Model) is
displayed on screen.

HP Display LiteSaver doesn't turn off the monitor screen.

The Activity Extension time has not elapsed.

The default Activity Extension value is set to 10 minutes. The HP Display LiteSaver will wait to detect no input or movement from the keyboard or mouse for 10 consecutive minutes after the Display Off time has passed, before the

Solving Common Problems 35