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Operation40
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 ambient temperature is between 0°C–35°C.
Do not use the High Altitude Mode if your altitude is between 0 m and 1500 m and ambient
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. Press MENU/EXIT and then press / until the SYSTEM SETUP: Advanced menu
is highlighted.
2. Press to highlight High Altitude Mode and press / select On. A confirmation
message is displayed.
3. Highlight Ye s and press MODE/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.
Adjusting the sound
The sound adjustments made as below will have an effect on the projector speakers. Be sure
you have made a correct connection to the projector audio input. See "Connection" on page
19 for how the audio input is connected.
Muting the sound
To temporarily turn off the sound:
1. Press MENU/EXIT and then press / until the SYSTEM SETUP: Advanced menu
is highlighted.
2. Press to highlight Audio Settings and press MODE/ENTER. The Audio Settings
page is displayed.
3. Highlight Mute and press / to select On.
Adjusting the sound level
To adjust the sound level, press Volume +/- on the remote control, or:
1. Repeat steps 1-2 above.
2. Press to highlight Volume and press / to select a desired sound level.
Turning on the Power On/Off Ring Tone
If you want to hear a ring tone during the projector start-up or shutdown, turn on the Power
On/Off Ring Tone:
1. Repeat steps 1-2 above.
2. Press to highlight Power On/Off Ring Tone and press / to select On.
The only way to change Power On/Off Ring Tone is setting On or Off here. Setting the sound
mute or changing the sound level will not affect the Power On/Off Ring Tone.