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Before you go to the checkout guide, be sure to read this
section.
Important Notes
Only certified trained personnel should
service the computer.
Be extremely careful during write operations
such as copying, saving, or formatting. Drives
in the computer that you are servicing might have
been rearranged; or the drive startup sequence
might have been altered. If you select an
incorrect drive, data or programs can be written
over.
Replace FRUs only for the correct model.
When you replace the FRU, make sure the
model of the machine and FRU part number are
correct by referring to the part list.
FRUs should not be replaced because of a
single, unreproducible failure. Single failures
can occur from a variety of reasons that have
nothing to do with a hardware defect; such as:
cosmic radiation, electrostatic discharge, or
software errors. FRU replacement should be
considered only when a recurring problem exists.
If you suspect an unreproducible failure, clear the
error log and run the test again. Do not replace
any FRUs if log errors do not reappear.
Do not replace a nondefective FRU.
How to Use Error Messages: Use the error
codes displayed on the screen to diagnose failures. If
more than one error code is displayed, begin the diagnosis
with the first error code. The cause of the first error code
can result in false error codes being displayed. If no error
code is displayed, see if the error symptom is listed in the
“Symptom-to-FRU Index” on page 18.
How to Diagnose Multiple FRUs: When the
adapter or device has more than one FRU, the error code
could be caused by either FRU. Before replacing multiple
FRUs, try removing or exchanging each FRU, one by one
in the designated sequence, to see if the symptoms
change.
What to Do First: The servicer must include the
following in the FRU exchange form or FRU return form
that is attached to the returned FRU.
1. Name and phone number of servicer
2. Date of service
3. Date when FRU failed
4. Date of purchase
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