70 Chapter 4

Error Symptoms List

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 right column is the most likely cause

.

Error Symptom Action/FRU
Processor / Processor Fan

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.

Processor fan does not run but power supply
fan runs.
1. Ensure the system is not in power s aving mode. See “Power
Management” in chapter 2.
2. With the system power on, measure the voltage of processor fan
connector. Its reading sho uld be +12Vdc.
3. System board.
Processor test failed. 1. Processor
2. System board
System Board and Memory

NOTE: Ensure the memory modules are installed properly and the contact leads are clean before

diagnosing any system problems.

Memory test failed. 1. See "Memory"
2. System board
Incorrect memory siz e shown or repeat ed
during POST.
1. Insert the memory modules in the DIMM sockets properly, then
reboot the system.
2. Memory module.
3. System board.
System works but fail s to enter power saving
mode when the Power Management Mode
is set to Enabled, and power saving timer
set in BIOS has elapsed.
1. Enter BIOS Setup and load default settings.
In Windows 98, check s ettings in Power Man agement Property
of Control Panel.
2. Reload software from Recove ry CD.
System hangs before sy stem boot. 1. See "Index of Sympt oms"
2. See "Undetermined P roblems"
System hangs after system boot. 1. Execute a system test and set it to stop at “Halt on Error” to see
the potential cause of the problem.
2. See “Undetermined Pr oblems”.
Blinking cursor only; system does not work. 1. Diskette/IDE drive connection/cables
2. Diskette/IDE disk d rives
3. See “Undetermined Pr oblems”.
4. System board
Diskette Drive

NOTE: Ensure the diskette drive is configured correctly in BIOS Setup and its read/write head is

clean before diagnosing any diskette drive problems.

Media and drive are mi smatched. 1. Ensure the diskette drive is configured correctly in the D isk
Drives of BIOS Setup.
2. Ensure the diskette drive is co rrectly formatted.
3. Diskette drive connection/cable
4. Diskette drive
5. System board
Diskette drive does not work. 1. Ensure the diskette drive is n ot set to None in the Disk Driv es of
BIOS Setup.
2. Diskette drive powe r
3. Diskette drive connection/cable
4. Diskette drive
5. System board