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Remote Control Battery Installation
[Wireless Card Remote Control]
1. Press firmly and slide the battery cover off.
2. Remove the old Lithium coin cell and install new one (CR2025).
Ensure that the side with a "+" is facing up.
3. Put the cover back.
Cleaning or Replacing the Filters
The air-filter sponge keeps the inside of the MultiSync VT440/VT540
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 re-
placing 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 correctly.
To clean the air-filter:
Vacuum the filter-through the filter cover.
To replace the air-filter:
1. Remove the filter cover by pushing up on the catch of the cover
until you feel it detach.
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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 membrane. Before replacing the filter cover, remove dust
and dirt from the projector cabinet. Keep out dust and during filter
replacement.
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