NEC Cinema NP-NC603L User Manual page 16

1. What's in the Box? and the Names of the Projector Parts
1-3-2. Rear of the projector
1. Air inlet
The air inlet for cooling inside the projector. Do not cover. Air filters are attached over the air inlet to prevent dust.
2. Buzzer (inside rear of projector)
The buzzer rings when the power is turned on or an error has occurred.
3. Air outlet
The air outlet to exhaust heat inside the projector. Do not cover.
[NOTE]
Do not cover the air inlets and outlet while the projector is in operation. Insufficient ventilation leads to a rise of the
internal temperature and may cause a fire or malfunction.
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