HP A10500 Series Manual page 79

Table 48 Power supply LED description
LED Color
Off
AC
Green
Green
Red
DC
Orange
Description
x
The power supply has no power input.
x
The input voltage is too low, and the power supply is in self protection state.
The power input is normal.
The power supply is outputting power normally.
The power supply is experiencing an output problem, including output
short-circuit, output overcurrent, output overvoltage, input under-voltage, or
remote power off, and has entered the self protection state.
The power supply is in an over-temperature condition and has entered the self
protection state.
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