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Table 2-3
Error Symptoms List
Error Symptoms
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.
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.
Processor test failed.
NOTE: Ensure that the memory modules are installed properly and the
contact lead is clean before diagnosing any system problems.
Memory test failed.
Incorrect memory size shown
or repeated during POST.
Action/FRU
Processor / Processor Fan
Make sure that the system is not in power
saving mode. See "Power Management" on
page 1-15.
With the system power on, measure the
voltage of processor fan connector FN (see
"Machine Type 2156 System Board Layout"
on page 5-3 or see "2156 System Board
Connectors and Functions" on page 5-6). Its
reading should be +12Vdc.
Processor fan.
System board.
Processor.
System board.
System Board and Memory
"Memory" on page 2-31
System board
Insert the memory modules in the DIMM
sockets properly, then reboot the system.
Memory module. See the "Step 005" of
"Memory" on page 2-31 to replace memory
module.
System board.
2-15
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