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E – 49
Cleaning or Replacing the Filters
The air-filter sponge keeps the inside of the LT158/LT157 Projector
free from dust or dirt and should be cleaned after every 100 hours of
operation (more often in dusty conditions). If the filter is dirty or clogged,
your projector may overheat.
CAUTION
• Turn off the power and unplug the projector before replacing the filter.
• Only clean the outside of the filter cover with a vacuum cleaner.
• Do not attempt to operate the projector without a filter cover.
• Your projector will not operate unless the filter cover is installed cor-
rectly.
To clean the air-filter:
When “Clean Filter” option is turned on, the “Please clean the filter”
message will be displayed each time the project or is turned on after it
has been used in excess of 100 hours. Should this message appear,
clean the filter.
• The message can be turned on or off using the “Menu” - “Filter Clean
Message” option on the Setup menu. See page E-36.
• After cleaning the filter and resetting the filter usage time to zero, the
message will not be displayed.
See page E-38 for resetting the filter usage time.
Vacuum the filter-through the filter cover.
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To replace the air-filter:
1. Remove the filter cover by pushing down on the catch of the cover
until you feel it detach.
2. Reinstall the new filter cover.
NOTE: Do not detach the sponge from the filter cover. Do not wash the filter
cover with soap and water. Soap and water will damage the the filter mem-
brane. Before replacing the filter cover, remove dust and dirt from the pro-
jector cabinet. Keep out dust and during filter replacement.
NOTE: When you replace the lamp, it is also wise to replace the filter. The
filter comes in the same package with your replacement lamp.
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