Lenovo V340 - General Checkout

19
General checkout
General checkout
Thischapterpresentsthefollowinginformation:
• “Whattodorst”onpage20
• “Powersystemcheckout”onpage21
Beforeyougotothecheckout,makesuretoreadthefollowingimportantnotes:
Important notes:
• Onlycertiedtrainedpersonnelcanservicethecomputer.
• BeforereplacinganyFRU, readthe entirepage onremovingandreplacing
FRU.
• CarefullyremovescrewsforreusewhenreplacingFRU.
• Beextremelycarefulduringsuchwriteoperationsascopying,saving,or
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
overwritten.
• Replace anFRUonly withanotherFRUofthecorrectmodel. When you
replace an FRU, make sure that the machine model and the FRU part number are
correct by referring to the FRU parts list.
• AnFRUshouldnotbereplacedjustbecauseofasingle,unreproduciblefailure.
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 an FRU only when a problem recurs. If you suspect that
an FRU is defective, clear the error logs and run the test again. If the error does
not recur, do not replace the FRU.
• BecarefulnottoreplaceanondefectiveFRU.