IBM eServer xSeries 135 Installation Manual page 37

The server does not power on.
Microprocessor problems
The server emits a continuous
tone during POST.
Memory problems
The amount of memory
displayed is less than the
amount of memory installed.
Option problems
An IBM option that was just
installed does not work.
Expansion enclosure problems
Verify that:
• The power cables are properly connected to the server.
• The electrical outlet functions properly.
• The type of memory that is installed is correct.
• If you just installed an option, remove it, and restart the server. If the server
now powers on, you might have installed more options than the power
supply supports.
• The LEDs on the power supply are on.
If the problem remains, call for service.
The startup (boot) microprocessor is not working properly.
Verify that the startup microprocessor is seated properly. If it is, replace the startup
microprocessor.
If the problem remains, call for service.
Verify that:
• The memory modules are seated properly.
• You have installed the correct type of memory.
• If you changed the memory, you updated the memory configuration with the
Configuration/Setup Utility program.
• All banks of memory on the DIMMs are enabled. The server might have
automatically disabled a DIMM bank when it detected a problem or a DIMM
bank could have been manually disabled.
If the above items are correct, run the memory diagnostic program. The system
might have detected a bad memory module and automatically reallocated memory
to enable you to continue to operate. If the memory tests fail, call for service or
replace the failing DIMM.
Verify that:
• The option is designed for the server. Refer to the "Support for IBM xSeries
Servers" flowchart for information about obtaining ServerProven™
compatibility information from the World Wide Web.
• You followed the installation instructions that came with the option.
• The option is installed correctly.
• You have not loosened any other installed options or cables.
• You updated the configuration information in the Configuration/Setup
Utility program. Whenever memory or an option is changed, you must
update the configuration.
If the problem remains, call for service.
Suggested action
Suggested action
Suggested action
Suggested action
Chapter 6. Solving problems
29