Hardware Maintenance Manual - IdeaPad S410p, S410p Touch, S510p, S510p Touch

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

FRUs.

• CarefullyremovescrewsforreusewhenreplacingFRUs.

• 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.