Operation Manual

Operation
44
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–30°C. China
region only applies at altitude up to 2000m.
Do not use the High Altitude Mode if your altitude is between 0 m and 1499 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. Hightlight Settings and press OK to enter.
2. Go to Advanced > High Altitude Mode and press OK.
3. Highlight On and press OK to confirm.
4. To leave the OSD, press until the projector returns to the home screen, or press
to go back to the home screen directly.
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 speaker(s). Be
sure you have made a correct connection to the projector audio input. See "Connection"
on page 20 for how the audio input is connected.
Muting the sound
To temporarily turn off the sound, press on the remote
control, or:
1. Hightlight Settings and press OK to enter.
2. Go to Advanced > Audio Settings and
press OK to enter.
3. Highlight Mute and press OK to open the
pop-up menu.
4. Highlight On and press OK to confirm.
5. To leave the OSD, press until the
projector returns to the home screen, or
press to go back to the home screen
directly.