BenQ TH670s - Manual (Page 61)

Maintenance 61
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
= 1 (hours used in Economic mode) + 4/3 (hours used in normal mode)
See "Setting Lamp Power" below for more information on Economic mode.
The lamp hour in Economic mode is calculated as 3/4 of that in Normal mode. That is,
using the projector in Economic mode helps to extend the lamp hour by 1/3.
To obtain the lamp hour information:
1.
Open the OSD menu and go to the Advanced menu > System Setup:
Advanced > Lamp Settings menu. Press OK on the projector or remote
control.
2. Select Lamp Timer and press OK on the projector or remote control.
3. You will see the Equivalent Lamp Hour information displaying on the menu.
4. To leave the menu, press MENU on the projector or remote control.
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 or remote control.
Setting Lamp Power
Using Economic/SmartEco mode will reduces system noise and power
consumption. If the Economic/SmartEco
mode is selected, the light output will be
reduced and result in darker projected pictures, the projector protected for longer
working life.
Setting the projector in Economic/SmartEco mode also extends the lamp
operation life. To set Economic/SmartEco mode, go to the Advanced menu >
Picture > Lamp Power menu and press / .
The lamp modes are defined as the chart below :
Lamp Power Description
Normal Provides full lamp brightness
Economic
Lower brightness to extend the lamp life and decreases the fan
noise
SmartEco
Adjusts the lamp power automatically depending on the
content brightness level