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Chapter 4 67
Index of Symptom-to-FRU Error Message
NOTE: To diagnose a problem, first find the error symptom in the left column. If directed to a check procedure,
replace the FRU indicated in the check procedure. If no check procedure is indicated, the first Action/
FRU listed in the right column is the most likely cause.
NOTE: Normally, the processor fan should be operative, and the processor clock setting should be exactly set
to match its speed requirement before diagnosing any processor problems.
NOTE: Ensure the memory modules are installed properly and the contact leads are clean before diagnosing
any system problems.
Processor/Processor Fan-Related Symptoms
Symptom / Error Action/FRU
Processor fan does not run but power
supply fan runs.
Ensure the system is not in power saving mode.
With the system power on, measure the voltage of processor
fan connector. Its reading should be +12Vdc. Its reading
should be +12Vdc. If the reading shows normal, but the fan
still does not work, then replace a good fan.
Mainboard
Processor test failed.
Processor
Mainboard
Mainboard and memory-Related Symptoms
Symptom / Error Action/FRU
Memory test failed.
Memory module
Mainboard
Incorrect memory size shown or repeated
during POST.
Insert the memory modules in the DIMM sockets properly,
then reboot the system.
Memory module
Mainboard
System works but fails to enter power
saving mode when the Power
Management Mode is set to Enabled.
Enter BIOS Setup and load default settings.In Windows
Systems, check settings in Power Management Property of
Control Panel.
Reload software from Recovery CD.
Blinking cursor only; system does not
work.
Diskette/IDE drive connection/cables
Diskette/IDE disk drives
See “Undetermined Problems”.
Mainboard