37 Maintenance
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. The method of calculating the equivalent light source hour is as follows:
Light Source Usage Time = (hours used in Normal mode) + (hours used in Economic mode) +
(hours used in SmartEco mode)
Total (equivalent) light source hour = 1.0 x (hours used in Normal mode) + 1.0 x (hours used in
Economic mode) + 1.0 x (hours used in SmartEco mode)
To obtain the light source hour information:
Go to SYSTEM SETUP: ADVANCED > Light Source Settings > Light Source Timer and
press OK. The Light Usage Time information is displayed.
You can also get the light source hour information on the INFORMATION > Light Usage Time
menu.
Extending light source life
• Setting the Light Mode
Go to PICTURE > Advanced > Light Mode and press OK. Select a suitable light source power
from among the provided modes.
Setting the projector in Economic or SmartEco mode extends light source life.
• Setting Auto 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 s e t Auto Off, go to SYSTEM SETUP: BASIC > Auto Off and press / .
For time used in each light source mode shown in OSD menu:
• Time used is accumulated and rounded down to an integer in hours.
• When time used is less than 1 hour, it shows 0 hours.
When you calculate Equivalent Light source hour manually, it will probably have deviation from the value shown in
OSD menu since projector system calculates time used for each light source mode in “Minutes” then rounds down
to an integer in hours shown in OSD.
Light Mode Description
Normal Provides full light source brightness
Economic Lowers brightness to extend the light source life and decreases the fan noise
SmartEco Adjusts the light source power automatically depending on the content brightness level
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