Epson PowerLite X49 3600-Lumen XGA 3LCD Projector - Manual (Page 163)

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Projector Setup Settings - ECO Menu
Settings on the ECO menu let you customize projector functions to save power. When you select a
power-saving setting, a leaf icon appears next to the menu item.
Setting Options Description
Power Consumption High
Medium
ECO
Selects the brightness mode of
the projector lamp. Select
ECO to
reduce lamp brightness and fan
noise, and save power and lamp
life.
Note: You cannot select these
settings when operating your
projector at high altitude or high
temperature.
Light Optimizer On
Off
When Power Consumption is
set to High or Medium and Auto
Iris is turned off, the lamp
brightness is adjusted based on
the projected image; you can set
this option for each color mode