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27
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:
1. Open the OSD menu and go to the SYSTEM SETUP: BASIC > CEC menu.
2. Press / to select Enable.
In order for the CEC function to work properly, make sure that the device is correctly
connected to the HDMI input of the projector via an HDMI cable, and its CEC function is turned
on.
Depending on the connected device, the CEC function may not work.
Adjusting the sound
The sound adjustments made as below will have an effect on the projector speaker. Be sure
you have made a correct connection to the projector audio input/output jacks. See
"Connection" on page 14 for more details.
Muting the sound
1. Open the OSD menu and go to the SYSTEM SETUP: ADVANCED > Audio
Settings > Mute menu.
2. Press / to select On.
Adjusting the sound level
1. Open the OSD menu and go to the SYSTEM SETUP: ADVANCED > Audio
Settings > Audio Volume menu.
2. Press / to select a desired sound level.
If available, you can press // on the remote control to adjust the projector’s sound
level.
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