Maintenance & Troubleshooting; Cleaning The Lens; Replacing The Projection Lamp - InFocus LP420 User Manual

MAINTENANCE & TROUBLESHOOTING
This section describes how to:
clean the lens
•
replace the projection lamp
•
use the Kensington lock feature
•
troubleshoot the projector
•

Cleaning the Lens

Follow these steps to clean the projection lens:
1 Apply a non-abrasive camera lens cleaner to a soft, dry cloth.
Avoid using an excessive amount of cleaner.
•
Abrasive cleaners, solvents or other harsh chemicals might
•
scratch the lens.
2 Lightly wipe the cleaning cloth over the lens.
3 If you don't intend to use the projector immediately, replace
the lens cap.

Replacing the Projection Lamp

The lamp hour counter on the status bar at the top of the menus
counts the number of hours the lamp has been in use. The LP 420
uses a metal halide bulb. These types of bulbs deteriorate over
time. Replace the lamp when the brightness is no longer accept-
able. You can order new lamp modules from your In Focus
dealer. See "Accessories" on page 35 for information.
Follow these steps to replace the projection lamp:
1 Turn off the projector and unplug the power cord.
2 Wait 30 minutes to allow it to cool thoroughly.
3 Place the projector on its side, then insert a small screwdriver
or other flat object into the tabs on the lamp module door (Fig-
ure 17).
WARNING: To avoid burns,
allow the projector to cool for at
least 30 minutes before you open
the lamp module door. Never
extract the lamp module while the
lamp is operating.
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