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Sun Microsystems T1000 Using LEDs to Identify the State of Devices

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14 Sun Fire T1000 Server Service Manual • January 2006

Using LEDs to Identify the State ofDevices

The Sun Fire T1000 server provides the following groupsof LEDs:

■Front and rear panel LEDS (FIGURE2-2,FIGURE 2-3, and TABLE 2-2)

■Power supply LEDs (FIGURE2-3 andTABLE 2-3)

These LEDs provide a quick visual check of the state of the system.

13. Replace faulty

FRU.

The FRUsrequire that you shut down the server to

perform a cold-swap.

After replacingthe faultyFRU, go to Action 14.

“Removingand Replacing

FRUs” on page 51

14. Verifythe repair. Variouscommands and utilities can be used to

verify the functionality of the system components.

Twouseful commands are:

• The ALOM showfaults command

• The ASR showcomponents command

Ifthe FRU isblacklisted, you can manually remove

it fromthe blacklist with the enablecomponent

command.

If the fault is cleared,and the componentis not

blacklisted, the repair is verifiedwell enough to

boot the server.For added assurance, you can run

the SunVTS diagnostic software.

“ToRun the showfaults

Command” on page 21

“Managing System

Components with

Automatic System

Recovery Commands” on

page40

“Exercisingthe System

with SunVTS” on page 43

15. Contact Sun for

Support.

Themajority of hardware faults are detected by the

server’s diagnostics. In rare cases it is possible that

a problem requiresadditional troubleshooting. If

you are unable to determine the cause of the

problem,contact Sun for support.

Sun Support information:

http://www.sun.com/

service/contacting

TABLE2-1 Diagnostic Flow Chart Actions (Continued)

Action

No. DiagnosticAction ResultingAction

Formore information, see

thesesections

AC OK

LED

Contents

Main Please Recycle Contents Page Page Page Preface How This Book Is Organized Using UNIX Commands Typographic Conventions Shell Prompts Youcan view and print the following documents from the Sun documentation web Sun Fire T1000 Server Documentation AaBbCc123 Accessing Sun Documentation Third-Party WebSites Page Page Sun Fire T1000 Server Overview Sun Fire T1000 Server Features Chip-Multitheaded (CMT) Multicore Processor and Memory Technology Performance Enhancements Remote Manageability With ALOM Ethernet RJ45s includes two LEDs: System Reliability, Availability, and Serviceability Environmental Monitoring Error Correction and Parity Checking Advanced ECC, also called Chipkill, detects up to 4-bits in error. Predictive Self-Healing Chassis Identification Additional Service Related Information Page Sun Fire T1000 Server Diagnostics Overview of Sun Fire T1000 Server Diagnostics Page Page Page Page Using LEDs to Identify the State of Devices The Sun Fire T1000 server provides the following groupsof LEDs: These LEDs provide a quick visual check of the state of the system. AC OK LED Page Front and Rear Panel LEDs Power On/Off button on the rear panel. Power Supply LEDs The power supply LEDs (TABLE2-3) are located on the back of the power supply. Using ALOM For Diagnosis and Repair Verification Note Running ALOM Service-Related Commands Connecting to ALOM Note Switching Between the System Console and ALOM Period). Service-Related ALOM Commands Note To Run the showfaults Command any additional faults. To Run the showenvironment Command Note Page To Run the showfru Command Page Page Running POST Controlling How POST Runs how the variables work together. Page mode. To Change POST Parameters #. sc> setsc diag_mode service sc> setkeyswitch diag Reasons to Run POST Routine Sanity Check of the Hardware Diagnosing the System Hardware To Run POST 4. Switch to the system console to view the post output: Example of POST output: Page Page Note Using the Solaris Predictive Self-Healing Feature Note To Use the fmdump Command to Identify Faults Page Collecting Information From Solaris OS Files and Commands To Check the Message Buffer To View System Message Log Files Managing System Components with Automatic System Recovery Commands Note To Run the showcomponent Command To Run the disablecomponent Command To Run the enablecomponent Command Exercising the System with SunVTS Checking Whether SunVTS Software Is Installed To Check Whether SunVTS Software Is Installed Exercising the System Using SunVTS Software To Exercise the System Using SunVTS Software Page Page Page Page Page Removing and Replacing FRUs Note Safety Information Safety Symbols Caution Electrostatic Discharge Safety Caution Use an Antistatic Wrist Strap Common Procedures for Parts Replacement Required Tools To Shut the System Down Note To Remove the Server From a Rack To Perform Electrostatic Discharge (ESD) Prevention Measures To Remove the Top Cover Note Caution Removing and Replacing CRUs To Remove the Optional PCI Express Card Page To Add or Replace the Optional PCI Express Card Note To Remove the Fan Tray Assembly To Replace the Fan Tray Assembly To Remove the Power Supply To Replace the Power Supply To Remove the Hard Drive To Replace the Hard Drive To Remove DIMMs Caution To Add or Replace DIMMs Page Note To Remove the Motherboard and Chassis To Replace the Motherboard and Chassis Assembly To Remove the Clock Battery on the Motherboard Page Page Page Page Field-Replaceable Units (FRUs) .