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Table 5-22 System Board LEDs
DescriptionLED
This green standby LED comes on as soon as the server power cord is plugged in.STBY (power good)
A few seconds after the server is plugged in this green LED starts flashing indicating the BMC
software is operational.
BMC (heartbeat)
A few seconds after the server power is turned on, the server firmware code fetch green LED
comes on indicating that the firmware has started the boot process.
F/W
LAN LEDs
There are front panel and rear panel LAN LEDs on the server.
Front Panel LAN LEDs
There is a diference in the LED display when the server AC power is on and the system DC
power is off (or in EFI mode).
With the LAN cable connected, the front panel LAN LED displays as follows:
• LAN LED is off (even if AC power is on)
• Solid green, LAN link is established, no current LAN activity
Rear Panel LAN LEDs
There are two 1 Gb LAN ports on the rear panel. They are LAN A and LAN B.
LAN A Connector LEDs
The 1 Gb LAN A interface provides four LEDs on the rear panel. Table 5-23 details the LED
locations and states for the LAN A connector.
Table 5-23 Gb LAN A Connector LEDs
DescriptionColorLocationLAN LED
NoneNoneTopNot used
Flashing amber: the 1000 Mbps with Ethernet protocol and
twisted-pair wiring is enabled.
Off: no link.
AmberSecond from top1000mb
Flashing green: the 100 Mbps with Ethernet protocol and
twisted-pair wiring is enabled.
Off: no link.
GreenSecond from bottom100mb
Flashing green: The Activity LED lights, and all other LEDs
are off for a 10 Mbps connection.
Off: no activity
GreenBottomActivity
LAN B Connector LEDs
The 1Gb LAN B interface provides two LEDs on the rear panel (the LED on the left is not used).
Table 5-24 details the LED locations and states for the LAN B connector.
Table 5-24 Gb LAN B Connector LEDs
DescriptionColorLocation
The 1000 MHz with Ethernet protocol and twisted-pair wiring is enabled,
off: no link
YellowSpeed (upper left)
The 100 MHz with Ethernet protocol and twisted-pair wiring is enabled,
off: no link
GreenSpeed (upper left)
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