NEC L102W User Manual page 54

Problem: Image is out of focus
Adjust the Focus Lever on the projector lens.
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Make sure the projection screen is between the required distance
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20.5" to 118.1"/52 to 300 mm from the projector (refer to page 18).
Problem: The image is stretched when displaying 16:9 DVD
The projector automatically detects 16:9 DVD and adjusts the aspect
ratio by digitizing to full screen with 4:3 default setting.
If the image is still stretched, you will also need to adjust the aspect
ratio by referring to the following:
Please select 4:3 aspect ratio type on your DVD player if you are
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playing a 16:9 DVD.
If you can't select 4:3 aspect ratio type on your DVD player,
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please select 4:3 aspect ratio in the on screen menu.
Problem: Image is reversed
Select "SETTING-->Image Flip" from the OSD and adjust the
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projection direction.
Problem: Message Reminders
Over temperature - the projector has exceeded its recommended
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operating temperature and must be allowed to cool down before
it may be used.
Fan failed - the system fan is not working.
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Appendices
47 ... English