LEDs
Part number ALR7200

The front panel includes two LED indicators that signal specific messages when illuminated:

LED

Meaning (when illuminated)

Power On

Steady Green - Power is ON.

Power On

Blinking Green - Memory Error

Note: Reset by pressing Keyboard Inhibit Button twice

Hard Disk Activity

Hard disk is active

IMPORTANT! A flashing Power LED indicates ECC memory failure.

WARNING! NEVER reset or turn off the system when the Disk Activity LED is lit (unless the drive had been improperly configured), or data may become corrupted.