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This chapter presents the following information:
• “What to do rst” on page 22
• “Power system checkout” on page 23
Before you go to the checkout, make sure to read the following important notes:
formatting. Drives in the computer that you are servicing sequence might
have been altered. If you select an incorrect drive, data or programs might be
• ReplaceaFRUonlywithanotherFRUofthecorrectmodel. When you
replace a FRU, make sure that the machine model and the FRU part number are
correct by referring to the FRU parts list.
Single failures can occur for a variety of reasons that have nothing to do with a
hardware defect, such as cosmic radiation, electrostatic discharge, or software
errors. Consider replacing a FRU only when a problem recurs. If you suspect that
a FRU is defective, clear the error logs and run the test again. If the error does not
recur, do not replace the FRU.