BenQ CRT Television Digital Projector User Manual

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Maintenance 49
Light source information
Getting to know the light source hour
When the projector is in operation, the duration (in hours) of light source usage is
automatically calculated by the built-in timer.
See "Setting Light Source Mode Selection as Economic" below for more information on Economic mode.
To obtain the light source hour information:
1. Press MENU/EXIT and then press / to highlight the SYSTEM SETUP:
Advanced menu.
2. Press to highlight Light Source Adjustments and press MODE/ENTER. The
Light Source Adjustments page is displayed.
3. You will see the Equivalent Light Source Hour information appearing on the
menu.
4. To leave the menu, press MENU/EXIT.
You can also get the light source hour information on the INFORMATION menu.
Extending light source life
The light source is a consumable item that normally can last up to 10000-20000 hours with
proper usage. To keep the light source life as long as possible, you can do the following
settings via the OSD menu.
• Setting Light Source Mode Selection as Economic
Using Economic mode reduces system noise and power consumption by 20%. If the
Economic mode is selected, the light output will be reduced and result in darker
projected pictures.
Setting the projector in Economic mode also extends the light source operation life. To
set Economic mode, go into the SYSTEM SETUP: Advanced > Light Source
Adjustments > Light Source Mode Selection 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 light source life.
To set Auto Power Off, go into the SYSTEM SETUP: Basic > Operation Settings
> Auto Power Off menu and press / . The time period can be set from 5 to 30
minutes in 5-minute increments. 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.

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