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Benq Dlp Projector MX620ST Manuel D’Utilisation

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Operation
34
2.
Press  
to 
highlight 
High Altitude Mode and press 
/
 select On. A 
confirmation message appears.
3.
Highlight Yes 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 speaker(s). Be 
sure you have made a correct connection to the projector audio input. See 
 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 appears.
3.
Highlight Mute and press  /  to select On.
If available, you can also press Mute on the remote control to toggle projector audio between on and off.
Adjusting the sound level
To adjust the sound level, press Volume +/- or 
/
, or:
1.
Repeat steps 1-2 above.
2.
Press  
to 
highlight 
Volume and press  /  to select a desired sound level.
Turning off the Power On/Off Ring Tone
To turn off the ring tone:
1.
Repeat steps 1-2 above.
2.
Press  
to 
highlight 
Power On/Off Ring Tone and press  /  to select Off.
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.
Using the test pattern
The projector is able to display the grid test 
pattern. It helps you adjust the image size and 
focus and check that the projected image is free 
from distortion.
To display the test pattern, open the OSD menu 
and go to the SYSTEM SETUP: Advanced > 
Test Pattern and press  /  to select On.