LED Diagnostics

LED Diagnostics:

The diagnostics built into the server allow you to quickly identify the type of system error that occurred. When the System Error LED on the information LED panel is illuminated, use the following information to isolate the problem.
An error message usually appears on the display monitor as well.

•  If the System Error LED on the information LED panel on the front of the server  is on, a system error was detected. Check the LEDs on the power supplies and  at any Ethernet adapters, then open the cover and check to see which of the  LEDs on the system board inside the server are on.  (See 'System Board LEDs' for the location of the LEDs.)

  System Board LED	Description
  Service Processor	An error has occurred in the service processor.
  Error LED On	Actions:
  	1. Try a reset by turning off the system, jumper/short J39,
  	and turn on the system.
  	2. Replace the system board.
  NMI LED on	A non-maskable interrupt occurred.
  	The PCI 1 or PCI 2 LED will probably also be on.
  	Actions:
  	1. If the PCI 1 or PCI 2 LED is on, follow the instructions
  	for those LEDs.
  	2. If the PCI 1 or PCI 2 LED is not on, restart the server.
  	If the problem persists (the NMI LED stays on), go to
  	'General Checkout'.
  SMI LED on	A system-management interrupt occurred.
  	This is an indication of service processor activity, and is
  	not an error.
  	Actions: No action is required.
  PCI 1 LED on	An error occurred on PCI bus 0.
  	An adapter in PCI slot 5 or the system board caused the error.
  	Actions: Check the error log for additional
  	information. If the error log indicates a problem with the
  	integrated Ethernet controller, replace the system board.
  PCI 2 LED on	An error occurred on PCI Bus 1.
  	An adapter in PCI slot 1, 2, 3, or 4 or the system board
  	caused the error.
  	Actions:
  	1. Check the error log for additional information.
  	2. If you cannot correct the problem from the information
  	in the error log, try to determine the failing adapter
  	by removing one adapter at a time from the secondary PCI bus
  	(PCI slots 1-4) and restarting the server after each
  	adapter is removed.
  DIMM 1 Error LED on	The DIMM in DIMM slot 1 has failed.
  	Action: Replace the DIMM in DIMM slot 1.
  DIMM 2 Error LED on	The DIMM in DIMM slot 2 has failed.
  	Action: Replace the DIMM in DIMM slot 2.
  DIMM 3 Error LED on	The DIMM in DIMM slot 3 has failed.
  	Action: Replace the DIMM in DIMM slot 3.
  DIMM 4 Error LED on	The DIMM in DIMM slot 4 has failed.
  	Action: Replace the DIMM in DIMM slot 4.
  FAN 1 LED on	Fan 1 has failed or is operating too slowly.
  	Note: A failing fan can also cause the
  	TEMP and DASD 1 LEDs to be on.
  	Action: Replace fan 1.
  FAN 2 LED on	Fan 2 has failed or is operating too slowly.
  	Note: A failing fan can also cause the
  	TEMP and DASD 1 LEDs to be on.
  	Action: Replace fan 2.
  TEMP LED on	The system temperature has exceeded the maximum rating.
  	Actions:
  	1. Check to see if a fan has failed. If it has, replace the fan.
  	2. Make sure the room temperature is not too hot.
  Integrated Voltage	The voltage regulator for the primary microprocessor slot has failed.
  Regulator Error LED on	Actions: Replace the system board.
  Secondary Processor	The voltage regulator module (VRM) for the secondary microprocessor
  VRM Error LED on	slot has failed.
  	Actions:
  	1. Turn off the server, reseat the VRM, and restart the server.
  	2. If the problem persists, replace the VRM.
  Primary Microprocessor	The microprocessor in the primary microprocessor slot has failed.
  Error LED on	Actions:
  	1. Turn off the server, reseat the microprocessor, and restart the
  	server.
  	2. If the problem persists, replace the microprocessor.
  Secondary
  Microprocessor Error	The microprocessor in the secondary microprocessor slot has failed.
  LED on	Actions:
  	1. Turn off the server, reseat the microprocessor and VRM, then
  	restart the server.
  	2. If the problem persists, replace the microprocessor.
  Power Supply 1 LED on	The primary power supply has failed.
  	Action: Replace the primary power supply replaced.
  Power Supply 2 LED on	The secondary power supply has failed.
  	Action: Replace the secondary power supply.
  System Error LED	The diagnostics have not detected a system error.
  on the information
  LED panel on the front
  of the server is off.
  DASD 1 LED on	A hot-swap hard disk drive has failed.
  	Actions:
  	1. Check the error log for additional information. If the
  	error log indicates a temperature problem and the fans are
  	working correctly, check the system for proper air flow.
  	2. If the amber Hard Disk Status LED on one of the hot-swap
  	hard disk drives is on, replace the hard disk drive.

•  System Error LED on the information LED panel on the front of the server is off.
•  The diagnostics have not detected a system error.