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11.4
Analyzing POST Messages
POST has three categories of messages:
"Error Messages" on page 11-14
"Warning Messages" on page 11-15
"Info Messages" on page 11-16
11.4.1
Error Messages
When an error occurs during POST, an error message is displayed. The error
message is bounded by the text ERROR and END_ERROR. Several error messages
might be displayed at different times during the POST process for any single error
condition.
The following error examples were caused by a defective 1-GByte DIMM in the slot
labeled DIMM0. The first error message occurred when the DIMMs were probed:
0>ERROR: TEST = Probe and Setup Memory
0>H/W under test = CPU0 Memory
0>Repair Instructions: Replace items in order listed by 'H/W under
test' above
0>MSG = ERROR:
0>END_ERROR
At address 00000000.00000000, there was a test pattern mismatch. A string of
a5a6a5a5 was observed when a string of a5a5a5a5 was expected.
The second error message identified where the fault was located:
0>ERROR: TEST = Probe and Setup Memory
0>H/W under test = CPU0: Bank 0
0>Repair Instructions: Replace items in order listed by 'H/W under
test' above
0>MSG = Pin 72 failed on CPU0: Bank 0
0>END_ERROR
11-14
Sun Ultra 45 and Ultra 25 Workstations Service and Diagnostics Manual • May 2006
miscompare on mem test!
Address: 00000000.00000000
Expected: a5a5a5a5.a5a5a5a5
Observed: a5a6a5a5.a5a5a5a5
DIMM0, Motherboard
DIMM0, Motherboard
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