25
MAINTENANCE & TROUBLESHOOTING
This section describes how to:
•
clean the lens
•
clean the fan filter
•
replace the projection lamp
•
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.
Cleaning the Fan Intake Filter
The fan intake filter on the bottom of the projector catches dust
and particles in the air. If the filter becomes clogged, the projector
does not cool properly and may malfunction. To prevent this,
clean the filter after every 100 hours of use.
1
Turn off the power and unplug the power cord.
2
Remove the filter door (Figure 15).
•
Remove the screw on the filter door and lift the door out.
Summary of Contents for LP740B
Page 1: ...USER S GUIDE ...
Page 2: ...USER S GUIDE ...
Page 3: ...Copyright 1998 by In Focus Inc Wilsonville Oregon All rights reserved ...
Page 10: ...INTRODUCTION ...
Page 15: ...SETTING UP THE PROJECTOR ...
Page 22: ...USING THE PROJECTOR ...
Page 36: ...MAINTENANCE AND TROUBLESHOOTING ...
Page 45: ...APPENDIX ...
Page 58: ...INDEX ...
Page 63: ...Part Number 010 0199 00 ...