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Chapter 5. Solving problems
This chapter provides basic troubleshooting information to help you solve some
common problems that might occur while you are setting up the server.
If you cannot diagnose and correct problems using the information in this chapter,
see Appendix A, "Getting help and technical assistance," on page 77, the Problem
Determination and Service Guide on the IBM System x Documentation CD, and the
"Server Support" flowchart in the front of this document.
Diagnostic tools overview
The following tools are available to help you diagnose and solve hardware-related
problems:
v POST beep codes
v Troubleshooting tables
v Diagnostic programs and error messages
v Light path diagnostics
POST beep codes
POST emits one beep to signal successful completion. If POST detects a problem
during startup, other beep codes might occur. Use the following beep code
descriptions to help diagnose and solve problems that are detected during startup.
Note: See the Problem Determination and Service Guide on the IBM System x
Documentation CD for more information about the POST beep codes.
One beep
Repeating long beeps
One long beep and two short beeps
© Copyright IBM Corp. 2007
The power-on self-test beep codes indicate the detection of a problem.
– One beep indicates successful completion of POST, with no errors.
– More than one beep indicates that POST detected a problem. Error messages
are displayed also if POST detects a hardware-configuration problem.
See "POST beep codes" and the Problem Determination and Service Guide
on the IBM System x Documentation CD for more information.
These tables list problem symptoms and actions to correct the problems. See
"Troubleshooting tables" on page 61 for more information.
The system diagnostic programs are provided in ROM. These programs test the
major components of the server. See the Problem Determination and Service
Guide on the IBM System x Documentation CD for more information.
Use light path diagnostics to diagnose system errors quickly. See "Light path
diagnostics" on page 73 for more information.
POST was completed successfully without finding any errors.
A memory error has occurred. Make sure that all DIMMs are correctly
installed.
A video error has occurred, and the BIOS cannot initialize the monitor
screen to display additional information.
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