Sun Microsystems Sun Fire V440 Diagnostics And Troubleshooting Manual page 29

The failure of such a test reveals precise information about particular integrated
circuits, the memory registers inside them, or the data paths connecting them.
1>ERROR: TEST = Data Bitwalk on Slave 3
1>H/W under test = CPU3 B0/D1 J0602 side 1 (Bank 1), CPU Module C3
1>Repair Instructions: Replace items in order listed by 'H/W under test' above
1>MSG = ERROR: miscompare on mem test!
Address: 00000030.001b0040
Expected: ffffffff.fffffffe
Observed: fffffbff.fffffff6
In this case, the DIMM labeled J0602, associated with CPU 3, was found to be faulty.
For information about the several ways firmware messages identify memory, see
"Reference for Identifying Memory Modules" on page 43.
What POST Error Messages Tell You
When a specific power-on self-test discloses an error, it reports different kinds of
information about the error:
The specific test that failed
The specific integrated circuit or subcomponent that is most likely at fault
The field-replaceable units (FRUs) most likely to require replacement, in order of
likelihood
Here is an excerpt of POST output showing another error message.
POST Error Message
CODE EXAMPLE 2-1
1>ERROR: TEST = IO-Bridge unit 0 PCI id
1>H/W under test = Motherboard IO-Bridge 0, CPU
1>Repair Instructions: Replace items in order listed by 'H/W under test' above
1>MSG = ERROR: PCI Master Abort Detected for
TOMATILLO:0, PCI BUS: A, DEVICE NUMBER:2.
DEVICE NAME: SCSI
1>END_ERROR
1>
1>ERROR: TEST = IO-Bridge unit 0 PCI id
1>H/W under test = Motherboard IO-Bridge 0, CPU
1>MSG =
*** Test Failed!! ***
1>END_ERROR
test
test
Chapter 2 Diagnostics and the Boot Process 11