C H A P T E R 8 - LED Status Indicators

C H A P T E R 8

LED Status Indicators

This chapter provides information about the system's interior and rear panel LED status indicators. Topics covered in this chapter include:

About CPU/Memory Slot LEDs

About PCI Slot LEDs

About Power Supply LEDs

About Fan Tray LEDs

About Disk Drive LEDs

About Gigabit Ethernet LEDs

For a description of the system's front panel LED indicators, see About the Status and Control Panel.

About 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.

This figure shows the location and appearance of Sun Fire V890 CPU/Memory slot LEDs.

Icon

Name

LED Function

The Power On icon

Power On

Lights when the slot is receiving power.

The Fault icon

Fault

Reserved for future use.

About 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.

This figure shows the location and appearance of Sun Fire V890 PCI slot LEDs.

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 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.

For more information about PCI cards and hot-plug operations, see:

About PCI Cards and Buses

About Hot-Pluggable and Hot-Swappable Components

About Power Supply LEDs

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

This figure shows the location and appearance of Sun Fire V890 power supply LEDs.

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.

Icon

Name

LED Function

The Fault icon

Fault

Lights when the power supply encounters a fault.

The AC-Present icon

AC-Present Status

Lights when AC power input is present and within acceptable operating limits.

The DC Status icon

DC Status

Lights when all DC outputs are functional and within acceptable operating limits.

About 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 per fan tray, as shown below.

This figure shows the location and appearance of Sun Fire V890 fan tray LEDs.

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 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.

The Power On icon

The Fault icon

The OK-to-Remove icon

Interpretation

Off

The fan tray is not receiving power or is improperly inserted.

Off

The fan tray is receiving power and operating normally.

Off

The fan tray has encountered a fault and can be safely removed from a powered-on system.

For more information about fan trays and hot-plug operations, see:

About Fan Trays

About Hot-Pluggable and Hot-Swappable Components

About 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 for each disk drive. The disk drive LEDs are located on the front of the disk cage, as shown below.

This figure shows the location and appearance of Sun Fire V890 disk drive LEDs. The Power On icon

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 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.

For more information about disk drives and hot-plug operations, see:

About Internal Disk Drives

About Hot-Pluggable and Hot-Swappable Components

About 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.

This figure shows the location and appearance of Sun Fire V890 Gigabit Ethernet LEDs.

Label	Name	LED Function
RX	Receive Activity	Indicates data activity on the receive channel.
TX	Transmit Activity	Indicates data activity on the transmit channel.
FDX	Full Duplex	Indicates that the Gigabit Ethernet interface is operating in full-duplex mode.
Link	Link Present	Indicates that a link is established with a link partner.