InFocus LitePro 610 Quick Start Manual page 56

M a i n t e
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Problem: Remote not operating correctly
You might need to replace the batteries. See page 44.
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Make sure you're pointing the remote either at the back or
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front of the projector, or at the projection screen.
Make sure the remote is within its operating range of 40 feet.
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T r o u b l e s h o o t i n g