Lenovo L2021 manual Troubleshooting, Problem Possible cause Suggested action Reference

Troubleshooting

If you have a problem setting up or using your monitor, you might be able to solve it yourself. Before calling your dealer or Lenovo, try the suggested actions that are appropriate to your problem.

Table 3-2.Troubleshooting

Problem	Possible cause	Suggested action		Reference
The words "Out	The system is set to a	If you are replacing an		“Selecting a
of Range" are	display mode which	old monitor, reconnect it		supported display
shown on the	is not supported by	and adjust the display		mode” on page 2-7
screen, and the	the monitor	mode to within the
power indicator		specified range for your
is flashing green		new monitor
		If using a Windows
		system, restart the system
		in safe mode, then select a
		supported display mode
		for your computer
		If these options do not
		work, contact the Support
		Center
The image	The video signal cable	Be sure the signal cable is		“Connecting and
quality is	is not connected with	firmly plugged into the		turning on your
unacceptable	the monitor or system	system and monitor		monitor” on page 1-3
	completely
	The color settings	Select another color		“Adjusting your
	may be incorrect	setting from the OSD		monitor image” on
		menu		page 2-3
	The automatic image	Perform automatic image		“Adjusting your
	setup function was	setup		monitor image” on
	not performed			page 2-3
The power	• The monitor’s	• Be sure the power		“Connecting and
indicator is not	power switch is		cord is connected	turning on your
lit and there is	not switched on		properly	monitor” on page 1-3
no image	• The power cord is	• Be sure the outlet has
	loose or		power
	disconnected	•	Power on the
	• There is no power		monitor
	at the outlet	•	Try using another
			power cord
		•	Try using another
			electrical outlet
Screen is blank	The monitor is in	• Press any key on the		“Understanding
and power	Standby/Suspend		keyboard or move	power management”
indicator is	mode		the mouse to restore	on page 2-8
steady amber or			operation
flashing green		•	Check the Power
			Options settings on
			your computer

Chapter 3. 3-3