Locking Control Keys; Operating In A High Altitude Environment; Creating Your Own Startup Screen - BenQ MX812ST User Manual

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
1. Press
Panel Key Lock menu, and select On by pressing
control. A confirmation message is displayed.
2. Highlight Yes and press MODE/ENTER to confirm.
To release panel key lock, press and hold
seconds.
You can also use the remote control to enter the
menu and press
• Keys on the remote control are still active when panel key lock is enabled.
• If you press
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 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
is highlighted.
2. Press
message is displayed.
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.

Creating your own startup screen

In addition to selecting the projector preset startup screen from among BenQ logo, Black or
Blue screen, you can make your own startup screen that is a picture projected from your
computer or video source.
To create your own startup screen, project the picture you want to use as your startup screen
from either a computer or video source. The rest steps are as follows.
• Using the remote control
38 Operation
/ on the projector or remote control or go to the SYSTEM SETUP: Basic >
Off
/ to select
POWER to turn off the projector without disabling panel key lock, the
to highlight High Altitude Mode and press
POWER.
/ on the remote control or projector for 3
SYSTEM SETUP: Basic >
.
/ until the SYSTEM SETUP: Advanced menu
/ on the projector or remote
Panel Key Lock
/ select On. A confirmation