Lenovo W541 Technical Information PDF herunterladen (Seite 46)

2.Ifnoerrorisdetected,donotreplaceanyFRUs.

3.Ifanyerrorisdetected,replacetheFRUshownbytheFRUcode.Rerunthetesttoverifythatno

moreerrorsexist.

Undeterminedproblems

Ifthediagnostictestsdidnotidentifytheadapterordevicethathasfailed,ifwrongdevicesareinstalled,

orifthesystemsimplyisnotoperating,followtheseprocedurestoisolatethefailingFRU(donotisolate

FRUsthathavenodefects).

Verifythatallattacheddevicesaresupportedbythecomputer.

Verifythatthepowersupplybeingusedatthetimeofthefailureisoperatingcorrectly.See“Powersystem

checkout”onpage26.

1.T urnoffthecomputer.

2.VisuallycheckeachFRUfordamage.ReplaceanydamagedFRU.

3.Removeordisconnectallofthefollowingdevices:

a.Non-ThinkPaddevices

b.Devicesattachedtothedockingstationortheportreplicator

c.Printer,mouse,andotherexternaldevices

d.Batterypack

e.Harddiskdriveorsolid-statedrive

f.Externaldiskettedriveoropticaldrive

g.Memorymodule

h.PCcards

4.T urnonthecomputer.

5.Determinewhethertheproblemhasbeensolved.

6.Iftheproblemdoesnotrecur,reconnecttheremoveddevicesoneatatimeuntilyouﬁndthefailingFRU.

7.Iftheproblemremains,replacethefollowingFRUsoneatatime(donotreplaceanondefectiveFRU):

a.Systemboard

b.LCDassembly

40HardwareMaintenanceManual

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Lenovo W541 Technical Information Seite 46