IBM 220 manual Diagnostic LEDs

Models: 220

1 148
Download 148 pages 12.73 Kb
Page 109
Image 109

Diagnostic LEDs

You can use the diagnostic LEDs built into your server to quickly identify the type of system error that occurred. Your server is designed so that LEDs remain illuminated when the server shuts down, as long as the power supplies are operating properly.

This feature helps you to isolate the problem if an error causes the server to shut down.

Error LED (on the

System board or

Cause

Action

system board or

front panel LED

 

 

front panel)

on

 

 

 

 

 

 

On

None

The system error log is 75% or more

Check the system error log and

A system error

 

full or a Predictive Failure Analysis

correct any problems. See “Choices

 

(PFA) alert was logged.

available from the

was detected.

 

 

Configuration/Setup main menu” on

Check to see

 

 

page 12 for information about

which of the LEDs

 

 

clearing the error log. Disconnecting

on the system

 

 

the server from all power sources for

board are on.

 

 

at least 20 seconds will turn off the

 

 

 

system error LED.

 

 

 

 

On

DIMM 1, DIMM 2,

A memory error occurred.

1. Check the DIMM error LEDs on

 

DIMM 3, or

 

the system board.

 

DIMM 4 (system

 

2. Replace the DIMM indicated by

 

board)

 

 

 

the lit DIMM error LED.

 

 

 

 

 

 

 

On

CPU 1 or CPU 2

One of the microprocessors has failed,

1. Check the microprocessor error

 

(system board)

or a microprocessor is installed

LEDs on the system board. If a

 

 

incorrectly.

microprocessor error LED is on

 

 

 

for a microprocessor connector

 

 

 

that has a terminator card

 

 

 

installed instead of a

 

 

 

microprocessor, the

 

 

 

microprocessors are not installed

 

 

 

in the correct order. See

 

 

 

“Installing and removing a

 

 

 

microprocessor” on page 54 for

 

 

 

information about the correct

 

 

 

order for installing

 

 

 

microprocessors. Otherwise,

 

 

 

continue with the next step.

 

 

 

2. Turn off the server, reseat the

 

 

 

microprocessor indicated by the

 

 

 

lit microprocessor error LED, and

 

 

 

restart the server.

 

 

 

3. If the problem persists, replace

 

 

 

the microprocessor.

 

 

 

If the problem persists, have the

 

 

 

system serviced.

 

 

 

 

On

Fan 1, Fan 2, or

One of the fans has failed or is

The LED on the failing fan will be lit.

 

Fan 3 (system

operating too slowly.

Contact an IBM service technician to

 

board)

 

replace the fan.

 

 

 

 

Table 15. Diagnostic LEDs

Chapter 6. Solving problems 99

Page 109
Image 109
IBM 220 manual Diagnostic LEDs