BenQ MU686, User Manual

Page: 51 / 64

Maintenance 51
Lamp information
Getting to know the lamp hour
When the projector is in operation, the duration (in hours) of lamp usage is automatically
calculated by the built-in timer. The method of calculating the equivalent lamp hour is as
follows:
Lamp Usage Time = (hours used in Normal mode) + (hours used in Economic mode) +
(hours used in SmartEco mode) + (hours used in LampSave mode)
Total (equivalent) lamp hour = 2.50 x (hours used in Normal mode) + 1.875 x (hours
used in Economic mode) + 1.25 x (hours used in SmartEco mode) + 1.00 x (hours used
in LampSave mode).
To obtain the lamp hour information:
1.
Press MENU and then press / to highlight the SYSTEM SETUP: Advanced
menu.
2. Press to highlight Lamp Settings and press OK . The Lamp Settings page
appears.
3. You will see the Lamp Timer information displaying on the menu.
4. To leave the menu, press MENU .
You can also get the lamp hour information on the INFORMATION menu.
Extending lamp life
The projector lamp is a consumable item. To keep the lamp life as long as possible, you can
do the following settings via the OSD menu.
• Setting the Lamp Mode
Setting the projector in Economic , SmartEco or LampSave mode extends the lamp
operation life. To do so, go to the SYSTEM SETUP: Advanced > Lamp Settings >
Lamp Mode menu and press / .
• Setting Auto Power Off
This function allows the projector to turn off automatically if no input signal is detected
after a set period of time to prevent unnecessary waste of lamp life.
To set
Auto Power Off , go into the SYSTEM SETUP: Basic > Operation Settings
> Auto Power Off menu and press / . If the preset time lengths are not suitable for
your presentation, select Disable . The projector will not automatically shut down in a
certain time period.
Lamp mode Description
Normal Provides full lamp brightness
Economic
Lowers brightness to extend the lamp life and decreases the fan
noise
SmartEco
Adjusts the lamp power automatically depending on the content
brightness level
LampSave
Adjusts the lamp power automatically and lowers the brightness to
extend the lamp life