BenQ LH770 User Manual page 64

Side dust filter replacement
1. Shut down the projector and pull off the power
plug from the socket. Clean the dust on the
projector and near the ventilation hole. Loosen
the 5 fasten screws used for fastening the cap
of dust filter.
2. Pull the cap of dust filter.
3. Remove the module of dust filter from the
projector.
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4. Align the hole on the module of the new dust
filter to the fasten screw on the cap of dust
filter.
5. Push in the cap gently and fasten screws
according to the indicated direction to install
the cap of dust filter back to the projector.