Optoma Optoma EP771 - Manual (Page 8)

Introduction
Top view—On-screen Display (OSD) buttons and LEDs
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1. Keystone/
Down cursor Corrects image-trapezoid (wider bottom) effect
Navigates and changes settings in the OSD
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2. VOL-/
Left cursor Decreases volume
Navigates and changes settings in the OSD
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Orange Lamp ready—you can safely turn on or off the projector 3. Lamp LED
Flashing Lamp not ready—do not press the power button
4. Keystone/
UP cursor Corrects image-trapezoid (wider top) effect
Navigates and changes settings in the OSD
Green Unit is powered on and working correctly
Off Unit is powered off
5. Power LED
Flashing Operational error code
(Refer to “LED Error Messages” on page 45)
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