Status Indicator LEDs

A P P E N D I X B

This appendix contains information about the locations and behavior of the LEDs on the server. It describes the external LEDs that can be viewed on the outside of the server and the internal LEDs that can be viewed only with the main cover removed.

External Status Indicator LEDs

See the following figures and tables for information about the LEDs that are viewable on the outside of the server.

FIGURE B-1 shows and describes the front panel LEDs.

FIGURE B-2 shows and describes the back panel LEDs.

FIGURE B-3 shows and describes the hard drive LEDs.

FIGURE B-4 and FIGURE B-5 show the location of the internal LEDs.

Front Panel LEDs

FIGURE B-1 Front Panel LEDs (X4140 shown)

Figure Legend
1	Locator LED/Locator button: White	4	Rear PS LED: (Amber) Power supply fault
2	Service Required LED: Amber	5	System Over Temperature LED: (Amber)
3	Power/OK LED: Green	6	Top Fan LED: (Amber) Service action required on fan(s)

Back Panel LEDs

FIGURE B-2 Back Panel LEDs (X4140 shown)

Figure Legend
1	Power Supply LEDs:	3	Service Required LED
	Power Supply OK: Green	4	Power OK LED
	Power Supply Fail: Amber	5	Ethernet Port LEDs
	AC OK: Green		Left side: Green indicates link activity.
2	Locator LED Button		Right side:
			Green indicates link activity
			Amber indicates link is operating at less than maximum speed.

Hard Drive LEDs

FIGURE B-3 Hard Drive LEDs

Figure Legend
1	Ready to remove LED: Blue - Service action is allowed
2	Fault LED: Amber - Service action is required
3	Status LED: Green - Blinks when data is being transferred

Internal Status Indicator LEDs

The server has internal status indicators on the motherboard, and on the mezzanine board. For motherboard locations, see FIGURE B-4. For mezzanine board locations, see FIGURE B-5.

The DIMM Fault LEDs indicate a problem with the corresponding DIMM. They are located next to the DIMM ejector handles.

When you press the Press to See Fault button, if there is a problem with a DIMM, the corresponding DIMM Fault LED flashes. See DIMM Fault LEDs for details.

The CPU Fault LEDs indicate a problem with the corresponding CPU.

When you press the Press to See Fault button, if there is a problem with a CPU, the corresponding CPU Fault LED flashes.

Note - The DIMM Fault and Motherboard Fault LEDs operate on stored power for up to a minute when the system is powered down, even after the AC power is disconnected, and the motherboard (or mezzanine board) is out of the system. The stored power lasts for about half an hour.

The Motherboard Fault LED on the mezzanine board indicates that there is a problem with the motherboard.

Note - The mezzanine board, when present, obscures part of the motherboard, including the LEDs. The Motherboard Fault LED indicates that one or more of the LEDs on the motherboard is active.

FIGURE B-4 DIMMs and LEDs on Motherboard

Graphic showing motherboard DIMMs and LEDs.

FIGURE B-5 DIMMs and LEDs on Mezzanine Board

Graphic showing mezzanine board DIMMs and LEDs. [ D ]