Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition

Sun Fire V440 LEDs

Front Panel LEDs

Several front panel LEDs provide general system status, alert you to system problems, and help you to determine the location of system faults.

During system startup, the LEDs are toggled on and off to verify that each one is working correctly. LEDs located on the front panel work in conjunction with specific fault LEDs. For example, a fault in the power supply subsystem illuminates the power supply Service Required LED on the affected power supply, as well as the system Service Required LED. Since all front panel status LEDs are powered by the system's standby power source, fault LEDs remain lit for any fault condition that results in a system shutdown.

System Status LEDs

At the top left of the system as you look at its front are three system status LEDs. The System Activity LED and the system Service Required LED provide a snapshot of the overall system status. The Locator LED helps you to quickly locate a specific system even though it may be one of numerous systems in a room. The Locator LED is at the far left in the cluster, and is lit by command from the administrator.

Each system status LED has a corresponding LED on the back panel.

Listed from left to right, the system status LEDs operate as described in the following table.

Icon

Name

Description

Locator

This white LED is lit by Solaris command, Sun Management Center command, or Advanced Lights Out Manager (ALOM) commands to help you locate the system. See the Sun Fire V440 Server Administration Guide for information about turning on the Locator LED.

Service Required

This amber LED lights steadily when a system fault is detected. This LED lights for any faults or failures detected in the following areas:

Motherboard
CPU/memory module
DIMM
Hard disk drive
PCI fan tray
CPU blower assembly
Power supply

In addition to the system Service Required LED, other fault LEDs might also be lit, depending on the nature of the fault. If the system Service Required LED is lit, check the status of other fault LEDs on the front panel to determine the nature of the fault. See the Sun Fire V440 Server Diagnostics and Troubleshooting Guide for more information.

System Activity

This green LED lights continuously when the system power is on.

Disk Drive Status LEDs

Each disk drive has its own status LEDs.

Listed from top to bottom, the disk drive LEDs operate as described in the following table.


Icon	Name	Description
	OK-to-Remove	This blue LED lights when the disk drive has been taken offline and is ready to remove.
	Service Required	Reserved for future use.
	Activity	This green LED is lit when the disk drive is operating normally. It flashes slowly during the disk drive hot-plug procedure. It flashes rapidly when the disk is spinning up or down, or during read/write activity.

Power Supply Status LEDs

Each power supply has its own status LEDs.

Each power supply LED has a corresponding LED on the back panel.

Listed from top to bottom, the power supply LEDs operate as described in the following table.


Icon	Name	Description
	OK-to-Remove	This blue LED lights when it is safe to remove and replace the power supply. This LED is lit by ALOM command and only lights when the other power supply is functioning correctly.
	Service Required	This amber LED lights to indicate a power supply fault. If a power supply Service Required LED is lit, the system Service Required LED is also lit.
	Power OK	This green LED is lit when the power supply is on and outputting regulated DC power within specified limits.
	Standby Available	This green LED is lit when AC input power is present. This LED is lit when the corresponding AC cable is plugged into a power source and the power supply is functioning correctly, regardless of system power status.

Back Panel LEDs

The back panel LEDs include the system status LEDs, the Ethernet port LEDs, the power supply LEDs, and the ALOM card LED. The system status LEDs and the power supply LEDs are replicated from the front panel.

System Status LEDs

The back panel system status LEDs consist of the System Activity LED, the system Service Required LED, and the Locator LED. These LEDs are located in the top-left corner of the back panel, and operate the same as the front system status LEDs.

Ethernet Connection LEDs

A set of Ethernet LEDs is located on each Ethernet port. The Ethernet LEDs operate as described in the following table.


Name	Description
Link/Activity	This green LED lights when a link is established at the particular port with its link partner, and blinks to indicate activity.
Speed	This LED (amber or green, depending on motherboard revision) lights when a Gigabit Ethernet connection is established, and is off when a 10/100-Mbps Ethernet connection is established.

Power Supply LEDs

Each power supply has a corresponding set of four LEDs on the back panel. These LEDs operate the same as the front power supply LEDs.

Network Management Port LED

The network management port on the ALOM system controller has a Link LED that operates as described in the following table.


Name	Description
Link	This green LED is lit when an Ethernet connection is present.


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