IBM iL2120 User Manual page 43

Problem: The image is out of focus.
v Turn the projection lens to focus the image.
v Make sure that the projection screen is at least 5 feet (1.5 m) from the
projector.
v Check the projection lens to see if it needs cleaning.
Problem: The image and menus are reversed left to right.
v Rear projection mode is probably turned on. Turn Rear Projection off in the
Controls menu. The image immediately returns to forward projection. See
"Rear projection" on page 23.
Problem: The projector displays vertical lines, "bleeding" or spots.
v Adjust the brightness. See "Brightness" on page 18.
v Check the projection lens to see if it needs cleaning.
Problem: There is no sound.
v Adjust the volume.
v Verify the audio/input connections.
v Adjust the audio source.
Problem: The image is "noisy" or streaked.
Try these steps in this order:
1. Deactivate the screen saver on your computer.
2. Turn Auto Image off and then on again. See "Auto image" on page 20.
3. Turn Auto Image off and adjust the synchronization and tracking
manually to find an optimal setting. See "Manual sync" and "Manual
tracking" on page 21.
v The problem might be with your computer video adapter. If possible,
connect the projector to a different computer.
Problem: The projected colors do not match the computer or video player
colors.
v Just as there are differences in the displays of different monitors, there are
often differences between the computer image and the projected image.
Adjust the brightness, tint and contrast from the Display menu. See
"Brightness," "Tint," and "Contrast" on page 18.
Problem: The lamp seems to be getting dimmer.
v The lamp begins to lose brightness when it has been in use for a long time.
Replace the lamp as described in "Replacing the projection lamp" on
page 27.
Installation and user's guide
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