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48 Maintenance
Time used in ECO mode = y hours
Time used in SmartEco mode = z hours
Time used in Custom mode = a hours
2. Equivalent Light Hour = hours
, if
X= light source life spec of Normal mode
Y= light source life spec of ECO mode
Z= light source life spec of SmartEco mode
A= light source life spec of Custom mode
A’ is the longest light life spec among X, Y, Z, A
To obtain the light source hour information:
1. Go to Advanced Menu - Settings > Light Usage Time and press OK.
2. The Light Usage Time information is displayed.
You can also get the light source hour information on the Information menu.
Extending light source life
• Setting the Light Source Mode
Go to Advanced Menu - Picture > Advanced Color Settings > Light Source Mode and select a
suitable light source power from among the provided modes.
Setting the projector in ECO, SmartEco or Custom mode extends light source life.
• 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 to Advanced Menu - System > Operation Settings > Power On/Off
Settings > Auto Power Off and press / .
For time used in each light 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 Hours manually, it will probably have deviation from the value shown
in OSD menu since projector system calculates time used for each light mode in “Minutes” then rounds
down to an integer in hours shown in OSD.
Light mode Description
Normal Provides full light source brightness
ECO 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 while optimizing display quality
Custom
Enables the light source brightness adjustment bar so that you can adjust the
setting to your liking
Some of the above light mode(s) may not be available under certain circumstances.
α
α
A'
X
----
χ×
A'
Y
----
y×
A'
Z
----
z×
A'
A
----
a×+++=
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