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AP2400R Hardware Reference Guide 17
LED Information
Hard Drive Power & Status LEDs
The SCSI hard drives have individual LEDs. When a hard drive is
installed, the specific LED for that hard drive is ON (steady green)
under normal conditions. If there is a problem, the LED may turn to a
steady amber. These LEDs are unlit when there is no hard drive is
present.
System Reset Button
This button resets (reboots) the system in case it does not respond
to normal commands.
Programmable Message LED
This LED is software programmable to indicate conditions such a
power outage or event warnings.
Fan Fail or High Temperature LED
When fan speeds and temperatures are normal, this LED shows a
steady green. This LED turns to steady amber when fan speeds
decrease or temperatures increase past a critical threshold.
Power Supply Failure LED
This LED lights when there is a serious problem with the power supply.
Hard Disk Activity LED
This LED flickers (green) whenever there is IDE or SCSI activity.
This LED is unlit when there is no disk activity.
Power ON LED
This LED lights up (steady green) when you apply power to the system
by pressing the power button. This LED goes off when you turn off
the system.
System Power Button
The system power button is connected to the motherboard and is
used for turning the system ON or OFF.