Sun Fire[tm] V890 LEDs

The following LED information pertains to the Sun Fire V890.

System LED Status Indicators

• At the top of the status and control panel, three general status LEDs provide a snapshot of the system status.
• Below the Power button and security keyswitch, a graphical display provides additional LED icons to indicate specific fault conditions and locations.

The general status LEDs work in conjunction with the specific fault LED icons. For example, a fault in the disk subsystem illuminates both the System Fault LED at the top of the panel and the Disk Fault icon in the graphical display below it. Fault LEDs within the enclosure help pinpoint the location of the faulty device. Since all front panel status LEDs are powered by the system s 5-volt standby power source, fault LEDs remain lit for any fault condition that results in a system shutdown.
During system startup, the front panel LEDs are individually toggled on and off to verify that each one is working correctly. After that, the front panel LEDs operate as described in the following table.

Icon	Name	LED Function
	Power / OK	This green LED lights when the system power is on.
	System Fault	This amber LED lights to indicate a serious system fault. When this LED is lit, one or more icons in the display panel may also light to indicate the specific nature and location of the fault.
	OK-to-Remove	This amber LED lights to indicate that an internal hot-pluggable component is ready for removal.
	Disk Fault	This amber LED lights to indicate a serious disk subsystem fault that is likely to bring down the system. When this LED is lit, one or more disk LEDs may also be lit at the front of the disk cage, indicating the source of the fault. See Disk Drive LEDs for more information

Icon	Name	Description
	Power Fault	This amber LED lights to indicate a serious power subsystem fault that is likely to bring down the system. When this LED is lit, one or more power supply LEDs may also be lit on the system rear panel. See Power Supply LEDs for more information.
	Thermal Fault	This amber LED lights to indicate a serious thermal fault (fan fault or overtemperature condition) that is likely to bring down the system. There are two Thermal Fault LEDs in the display to indicate whether the fault is located on the left or right side of the system. In the event of a fan fault, a fault LED inside the system will indicate the faulty fan assembly. See Fan Tray LEDs for more information.
	Attention Side	This amber LED lights to indicate that an internal component on the side of the system that the arrow is pointing to requires servicing.
	Attention Side	This amber LED lights to indicate that an internal component on the side of the system that the arrow is pointing to requires servicing.

CPU/Memory Slot LEDs

The CPU/Memory slot LEDs are located on the horizontal panel between CPU/Memory slots B and C and are visible when the right side door is open. There are two LEDs for each CPU/Memory slot, as shown below.

Icon	Name	LED Function
	Power On	Lights when the slot is receiving power.
	Fault	Reserved for future use.

PCI Slot LEDs

The PCI slot LEDs are located on the vertical bracket on the right side of the PCI slots and are visible when the left side door is open. There are three LEDs for each PCI slot, as shown below.

Icon	Name	LED Function
	Power On	Lights when the slot is receiving power.
	Fault	Blinks while the card is being tested, when a hot-plug operation is in progress, or when the card is powered on but logically detached from the operating system. Stays lit if the card encounters a fault.
	OK-to-Remove	Lights when it is safe to remove the card.

The following table shows how to interpret the various possible PCI slot LED patterns.

			Interpretation
Off	Off	Off	The slot power is off. A PCI card can be safely inserted to start a hot-plug operation.
On	Blinking	Off	The installed card is being tested, configured, or deconfigured, or the card is powered on but logically detached from the operating system.
On	Off	Off	The slot power is on and the PCI card is operating normally.
Off	On	On	The PCI card has encountered a fault. The card can be safely removed.
Off	Off	On	The card can be safely removed.

Note: If the slot is empty and the Fault or OK-to-Remove LED is on, pressing the contact push button for the slot will clear the LED.

Power Supply LEDs

There are three LEDs located on the rear of each power supply, as shown below.

Icon	Name	LED Function
	Fault	Lights when the power supply encounters a fault.
	AC Present Status	Lights when AC power input is present and within acceptable operating limits.
	DC Status	Lights when all DC outputs are functional and within acceptable operating limits.

Fan Tray LEDs

The Thermal Fault LED on the system status and control panel indicates the overall status of the cooling system. The Thermal Fault LED lights when a fan fault or overtemperature condition is detected. LEDs inside the system indicate the fault status of each fan tray assembly. The fan tray LEDs are located beside or beneath each fan tray assembly. There are three LEDs (Power On, Fault, and OK-to-Remove) per fan tray, as shown below.

Icon	Name	LED Function
	Power On	Lights when the fan tray is receiving power.
	Fault	Lights when the fan tray encounters a fault.
	OK-to-Remove	Lights when it is safe to remove the fan tray assembly from a powered-on system (only when redundant fan trays are present).

The following table shows how to interpret the various possible fan tray LED patterns.

			Interpretation
Off	Off	Off	The fan tray is not receiving power or is improperly inserted.
On	Off	Off	The fan tray is receiving power and operating normally.
Off	On	On	The fan tray has encountered a fault and can be safely removed from a powered-on system.

Disk Drive LEDs

The Disk Fault LED on the system status and control panel indicates the general status of the disk subsystem. The Disk Fault LED lights when a fault is detected in the disk subsystem. LEDs inside the system indicate the fault status of individual disk drives. There are three LEDs (Activity, Fault, OK-to-Remove) for each disk drive. The disk drive LEDs are located on the front of the disk cage, as shown below.

Icon	Name	LED Function
	Activity	Blinks slowly while the disk drive is being tested, configured, or deconfigured during a hot-plug operation. Blinks rapidly as the disk drive spins up or spins down. Stays lit when the disk drive is at speed and operating normally but experiencing no read or write activity. Blinks rapidly and irregularly in response to disk read or write activity.
	Fault	Lights when the disk drive encounters a fault.
	OK-to-Remove	Lights when it is safe to remove the disk drive during a hot-plug operation. Blinks (under software control) to direct attention to a disk drive.

The following table shows how to interpret the various possible Disk Drive LED patterns.

			Interpretation
Off	Off	Off	Slot power is off. A disk drive can be safely inserted as part of a hot-plug operation.
Rapid Blinking	Off	Off	Disk drive is spinning up or down.
Slow Blinking	Off	Off	Disk drive is being configured or deconfigured during a hot-plug operation.
On	Off	Off	Disk drive is up to speed and operating normally.
Irregular Blinking	Off	Off	Disk drive is experiencing read or write activity.
On	On	Off	Disk drive has encountered a fault.
Off	Off	On	Disk drive can be safely removed as part of a hot-plug operation.

Gigabit Ethernet LEDs

Four LEDs provide status information for the Gigabit Ethernet port. The LEDs are located above the Gigabit Ethernet port on the system rear panel, as shown below.