BenQ MW855UST+ 3500-Lumen WXGA Ultra-Short Throw DLP Projector - Manual (Page 62)

Maintenance 62
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:
Total (equivalent) lamp hour = A*(hours used in
Normal mode) + B*(hours used in Economic
mode) + 1.00*(hours used in SmartEco mode)
See "Setting Lamp mode as Economic or SmartEco" below for more information on Economic
mode.
To obtain the lamp hour information:
1. Press MENU/EXIT and then press ◄ / ► until the SYSTEM SETUP: Advanced
menu is highlighted.
2. Press ▼ to highlight Lamp Settings and press MODE/ENTER . The Lamp
Settings page displays.
3. You will see the Lamp Timer information displaying on the menu.
4. To leave the menu, press MENU/EXIT .
You can also get the lamp hour information on the INFORMATION menu.
Extending lamp life
The projection 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 Lamp mode as Economic or SmartEco
Using Economic mode reduces system noise and power consumption by 15%. Using
SmartEco mode reduces system noise and lamp power consumption by up to 30%. If the
Economic or SmartEco mode is selected, the light output will be reduced and result in
darker projected pictures.
Setting the projector in Economic or SmartEco mode also extends the lamp operation
life. To set Economic or SmartEco mode, go into the SYSTEM SETUP: Advanced >
Lamp Settings > Lamp mode menu and press ◄ / ► until your desired mode is
selected.
There is a time delay between lamp mode instances.
Model A B
MX854UST/MW855UST 2 1.5
MH856UST 2.33 1.75
Lamp mode Description
Normal 100% lamp brightness
Economic Saves 15% lamp power consumption
SmartEco
Saves up to 30% lamp power consumption depending on the
content brightness level.