Epson EB 824 - Manual (Page 55)

If you are having a problem with the projector, first check the projector's indicators and refer to "Reading the Indicators" below.
If the indicators do not show clearly what the problem might be, refer to "When the Indicators Provide No Help".
s p.58
Reading the Indicators
The projector is provided with the following three indicators that indicate the operating status of the projector.
A Indicates the operating status. Standby condition
When the [t] button is pressed in this condition, projection starts.
Preparing network monitoring or cool down in progress
Buttons are disabled while the indicator is flashing.
Warming up
Warm-up time is about 30 seconds. After warm-up is complete, the indicator stops flashing.
Projecting
B Indicates the projection Lamp status.
C Indicates the internal temperature status.
Refer to the following table to see what the indicators mean and how to remedy problems that they indicate.
Problem Solving
55