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Why does projector have some noise?

03-06-2017
Noise normally heard are generated by:
1. Color wheel which spins to create the colors.
2. Projector fan that ventilates and helps cool down the system. An intelligent fan control system is used to automatically adjust the speed of the fan. Sometimes when the projector is used for an extended period of time, the fan control system will automatically increase in fan useage.
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