Operation Manual
English
42
Locking control keys
With the control keys 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 POWER.
1. Go to the SYSTEM SETUP: Basic > Panel Key Lock menu and select On by pressing ◄/► on
the projector or remote control. A conrmation message appears.
2. Highlight Ye s and press MODE/ENTER.
To release Panel Key Lock, use the remote control to enter SYSTEM SETUP: Basic > Panel Key
Lock menu and press ◄/► to select Off.
y When activating Panel Key Lock, keys on the remote control are still effective.
y If pressing to turn off the projector but not disabling Panel Key Lock, panel keys
are still locked next time turning on the projector.
Operating in a high altitude environment
We recommend you use the High Altitude Mode when your environment is between 1500 m –5000
m above sea level, and ambient temperature is between 0°C–30°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 select High Altitude Mode and press ◄/► to select On. A conrmation message
displays.
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 speaker(s). Be sure you have
made a correct connection to the projector audio input. See “Connection” on page 23 for how the
audio input is connected.
Input signal Audio Input AUDIO OUT
PC Mini jack Mini jack
HDMI-1, HDMI-2/MHL HDMI Mini jack
VIDEO RCA Mini jack
S-VIDEO RCA Mini jack