Lenovo H535 Desktop User Manual Page 9
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Chapter2.Safetyinformation
Thischaptercontainsthesafetyinformationthatyouneedtobefamiliarwithbeforeservicingacomputer.
Generalsafety
Followtheserulestoensuregeneralsafety:
•Observegoodhousekeepingintheareaofthemachinesduringandaftermaintenance.
•Whenliftinganyheavyobject:
1.Ensureyoucanstandsafelywithoutslipping.
2.Distributetheweightoftheobjectequallybetweenyourfeet.
3.Useaslowliftingforce.Nevermovesuddenlyortwistwhenyouattempttolift.
4.Liftbystandingorbypushingupwithyourlegmuscles;thisactionremovesthestrainfromthe
musclesinyourback.
Donotattempttoliftanyobjectsthatweighmorethan16kg(35lb)orobjectsthatyouthinkare
tooheavyforyou.
•Donotperformanyactionthatcauseshazardstothecustomer,orthatmakestheequipmentunsafe.
•Beforeyoustartthemachine,ensurethatotherservicerepresentativesandthecustomer’spersonnelare
notinahazardousposition.
•Placeremovedcoversandotherpartsinasafeplace,awayfromallpersonnel,whileyouareservicing
themachine.
•Keepyourtoolcaseawayfromwalkareassothatotherpeoplewillnottripoverit.
•Donotwearlooseclothingthatcanbetrappedinthemovingpartsofamachine.Ensurethatyoursleeves
arefastenedorrolledupaboveyourelbows.Ifyourhairislong,fastenit.
•Inserttheendsofyournecktieorscarfinsideclothingorfastenitwithanonconductiveclip,approximately
8centimeters(3inches)fromtheend.
•Donotwearjewelry,chains,metal-frameeyeglasses,ormetalfastenersforyourclothing.
Remember:Metalobjectsaregoodelectricalconductors.
•Wearsafetyglasseswhenyouare:hammering,drillingsoldering,cuttingwire,attachingsprings,using
solvents,orworkinginanyotherconditionsthatmightbehazardoustoyoureyes.
•Afterservice,reinstallallsafetyshields,guards,labels,andgroundwires.Replaceanysafetydevice
thatiswornordefective.
•Reinstallallcoverscorrectlybeforereturningthemachinetothecustomer.
Electricalsafety
CAUTION:
Electricalcurrentfrompower,telephone,andcommunicationcablescanbehazardous.T oavoid
personalinjuryorequipmentdamage,disconnecttheattachedpowercords,telecommunication
systems,networks,andmodemsbeforeyouopenthecomputercovers,unlessinstructedotherwise
intheinstallationandcongurationprocedures.
©CopyrightLenovo2012
3
- LenovoH505/520/535 1
- HardwareMaintenanceManual 1
- FirstEdition(November2012)1st 4
- ©CopyrightLenovo2012 4
- GS-35F-05925 4
- Chapter1.Aboutthismanual 7
- Chapter2.Safetyinformation 9
- Safetyinspectionguide 11
- Groundingrequirements 12
- Safetynotices 12
- Chapter2.Safetyinformation7 13
- Chapter3.Generalinformation 15
- Chapter4.GeneralCheckout 17
- Chapter5.UsingtheSetupUtility 19
- Enablingordisablingadevice 21
- Selectingastartupdevice 22
- Chapter6.Symptom-to-FRUIndex 25
- POSTerrorcodes 26
- Undeterminedproblems 26
- 4.USBconnectors 27
- Rearview 28
- Hardwarecomponents 31
- Chapter8.Replacinghardware 35
- Replacingthekeyboardandmouse 36
- Removingthecomputercover 36
- .Replacinghardware31 37
- Removingthefrontbezel 38
- Replacinganopticaldrive 39
- Replacingtheharddiskdrive 40
- Replacingamemorymodule 41
- Replacingthegraphiccard 42
- .Replacinghardware37 43
- Replacingtheheat-sinkassembly 44
- ReplacinganIntelCPU 45
- 1andopentheretainer.2 46
- Chapter8.Replacinghardware43 49
- Replacingthesystemfan 50
- .Replacinghardware45 51
- ReplacingthePowersupply 53
- ReplacingtheWi-Ficard 53
- Replacingthemotherboard 55
- .Replacinghardware51 57
- Chapter9.Generalinformation 59
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