Celestica A2210, User Manual, Page: 24 / 76

U S E R ’ S M A N U A L
3.2 Control Panel LEDs
There are four LEDs that are visible through the front panel, as listed in Table 3.
Table 3. LED Definitions
LED Name Functional Description
Power Indicates the full on state when lit. When off, the system is “off” but the
ac power cord may still be plugged in.
HD Act
Hard disk activity LED. When blinking or on, indicates the disk drive is
being accessed.
LAN On or blinks when LAN activity is present.
FAULT Indicates a fan fault or a Baseboard Management Controller (BMC)
system fault. The BMC blinks this light to indicate a fault.
The Fault LED is used to provide a visual indication of warning or critical events
identified by the BMC. Any fan fault condition will blink this LED through built-in
hardware circuitry. For other fault conditions detected by the BMC, and regardless
of whether or not there is a fan fault, the BMC overrides this LED and holds it in
the lighted condition. When the BMC-detected fault is removed, the BMC
relinquishes control of this LED to the fan tachometer fault circuitry, which is the
default owner of this LED.
Remote server locating is implemented through an OEM IPMI command. The
Remote Server Locate command is designed to provide a visual cue to the location
of a single server in a large server farm. Upon receipt of this command, the BMC
overrides the Power LED state and implements a software timer to blink the LED.
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