LED Diagnostics

^{IBM-AUSTRIA - PC-HW-Support 30 Aug 1999}

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 of 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.

System Board LED	Description

Service Processor	An error has occurred in the service processor.
Error LED On	Actions:
	1. Try a reset by turning of 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.

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