Lenovo T550 Technical Information Page 58

  • Download
  • Add to my manuals
  • Print
  • Page
    / 112
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 57
Itisrecommendedtouseeachscrewonlyonce.
Tightenscrewsasfollows:
Plastictoplastic
Turnanadditional90degreesafterthescrewheadtouchesthesurfaceoftheplasticpart.
90degreesmore
(Cross-section)
Logiccardtoplastic
Turnanadditional180degreesafterthescrewheadtouchesthesurfaceofthelogiccard.
180degreesmore
(Cross-section)
Notes:
Ensurethatyouusethecorrectscrew.Itisrecommendedtousenewscrewsforreplacements.Ifyou
haveatorquescrewdriver,tightenallscrewsfirmlytothetorquespecifiedinthescrewinformation
tableforeachstep.
Ensurethattorquescrewdriversarecalibratedcorrectlyfollowingcountryspecifications.
Retainingserialnumbers
Thissectionincludesthefollowingdescriptions:
“Restoringtheserialnumberofthesystemunit”onpage52
“RetainingtheUUID”onpage53
“ReadingorwritingtheECAinformation”onpage54
Restoringtheserialnumberofthesystemunit
Whenthecomputerwasmanufactured,theEEPROMonthesystemboardwasloadedwiththeserial
numbersofthesystemandallmajorcomponents.Thesenumbersneedtoremainthesamethroughout
thelifeofthecomputer.
Ifyoureplacethesystemboard,youmustrestoretheserialnumberofthesystemunittoitsoriginalvalue.
Theserialnumberofthesystemunitiswrittenonthelabelattachedtothebottomofthecomputer.
Ifyoucannotfindtheserialnumberofthesystemunitonthebottomofthecomputer,trythefollowing
methodtogetthenumber:
Note:Beforeyouperformtheoperation,ensurethattheUEFI/LegacysettingwithintheStartupmenuin
theThinkPadSetupprogramissettoUEFIOnly.
1.ConnectaUSBmemorykeytothecomputer.
52HardwareMaintenanceManual
Page view 57
1 ... 57 58 59 ... 112

Comments to this Manuals

No comments