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Locking control keys
With the control keys on the projector locked, you can prevent your projector settings from
being changed accidentally (by children, for example). When the Panel Key Lock is on, no
control keys on the projector will operate except Power.
1. Go to the SYSTEM
> Panel Key Lock menu
2. Press Enter and press / to select On.
3. A confirmation message is displayed. Select Yes to confirm.
To release panel key lock, press and hold on the projector for 3 seconds.
You can also use the remote control to enter the SYSTEM
> Panel Key Lock menu and
select Off.
Keys on the remote control are still functional when panel key lock is enabled.
If you press Power to turn off the projector without disabling panel key lock, the projector
will still be in locked status the next time it is turned on.
Operating in a high altitude environment
We recommend you use the High Altitude Mode when your environment is between 1500
m–3000 m above sea level, and temperature is between 0°C–30°C.
CAUTION
Do not use the High Altitude Mode if your altitude is between 0 m and 1499 m and temperature
is between 0°C and 35°C. The projector will be over cooled, if you turn the mode on under
such a condition.
To activate the High Altitude Mode:
1. Open the OSD menu and go to the SYSTEM > High
Altitude Mode menu.
2. Press Enter and press / to select On. A
confirmation message is displayed.
3. Highlight Yes and press Enter.
Operation under "High Altitude Mode" may cause a higher
decibel operating noise level because of increased fan speed
necessary to improve overall system cooling and
performance.
If you use this projector under other extreme conditions excluding the above, it may display
auto shut-down symptoms, which is designed to protect your projector from over-heating.
In cases like this, you should switch to High Altitude Mode to solve these symptoms.
However, this is not to state that this projector can operate under any and all harsh or
extreme conditions.
Using the CEC function
This projector supports CEC (Consumer Electronics Control) function for synchronized
power on/off operation via HDMI connection. That is, if a device that also supports CEC
function is connected to the HDMI input of the projector, when the projector’s power is
turned off, the power of the connected device will also be turned off automatically. When
the power of the connected device is turned on, the projector’s power will be turned on
automatically.
To turn on the CEC function:
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