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Symptom Cause and Remedy
The control panel keys do
not function.
The control panel keys are locked.
c Unlock the control panel keys (page 52).
The fan is noisy. • Lamp Mode is set to “High”.
c When the Lamp Mode is set to “High”, the sound from the fan
to cool the lamp, etc. is often excessive.
• High Altitude Mode is set to “On”.
c When High Altitude Mode is set to “On”, the sound from the
fan to cool the lamp is often excessive.
c Check the ventilation holes are not blocked.
c Make sure the room temperature is not too high.
To maintain the product reliability of the projector’s components,
the rotation speed of the fan increases and the fan becomes
slightly noisier, when the room temperature exceeds normal. The
approximate normal temperature is 25°C.