Lenovo C400 Appendix A. Troubleshooting, Common problems and solutions, Tips for troubleshooting

Appendix A. Troubleshooting

The guidelines below provide tips to deal with problems you may encounter while using the projector. If the problem remains unsolved, contact your dealer for assistance.

Common problems and solutions

Check the following before proceeding to the problem-specific solutions.

vUse a different electrical device in the electrical outlet to confirm that the outlet is working.

vEnsure that the projector is turned on.

vEnsure all connections are securely attached.

vEnsure the attached device is turned on.

vEnsure a connected PC is not in suspend mode.

vEnsure a connected notebook computer is configured for an external display. This is usually done by pressing an Fn-key combination on the notebook.

Tips for troubleshooting

In each problem-specific section, try the steps in the order suggested. This may help you to solve the problem faster.

Try to pinpoint the problem and thus avoid replacing non-defective parts. For example, if you replace batteries and the problem remains, put the original batteries back and go to the next step.

Keep a record of the steps you take when troubleshooting: The information may be useful when calling for technical support or for passing on to service personnel.

Troubleshooting information

The following table provides troubleshooting information for the projector. In some cases, more than one possible solution is provided. Try the solutions in the order they are presented. When the problem is solved, you can skip the additional solutions.

Table A-1. Troubleshooting

Problem	Solution
No image appears on the screen.	v Make sure your computer and projector are turned
	on.
	v Verify the settings on your notebook or desktop PC.
	v Turn off all equipment and power up again in the
	correct order.

© Lenovo 2005. Portions © IBM Corp. 2004. A-1