Lenovo IdeaCentre A520 All-in-One User Manual Page 10
- Page / 73
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
Observethefollowingruleswhenworkingonelectricalequipment.
Important:Useonlyapprovedtoolsandtestequipment.Somehandtoolshavehandlescoveredwithasoft
materialthatdoesnotinsulateyouwhenworkingwithliveelectricalcurrents.Manycustomershaverubber
oormatsneartheirequipmentthatcontainsmallconductiveberstodecreaseelectrostaticdischarge.
•Findtheroomemergencypower-off(EPO)switch,disconnectingswitch,orelectricaloutlet.Ifanelectrical
accidentoccurs,youcanthenoperatetheswitchorunplugthepowercordquickly.
•Donotworkaloneunderhazardousconditionsornearequipmentthathashazardousvoltages.
•Disconnectallpowerbefore:
–Performingamechanicalinspection
–Workingnearpowersupplies
–RemovingorinstallingFieldReplaceableUnits(FRUs)
•Beforeyoustarttoworkonthecomputer,unplugthepowercord.Ifyoucannotunplugit,askthe
customertopower-offtheelectricaloutletthatsuppliespowertothemachineandtolocktheelectrical
outletintheoffposition.
•Ifyouneedtoworkonacomputerthathasexposedelectricalcircuits,observethefollowingprecautions:
–Ensurethatanotherperson,familiarwiththepower-offcontrols,isnearyou.
Remember:Anotherpersonmustbetheretoswitchoffthepower,ifnecessary.
–Useonlyonehandwhenworkingwithpowered-onelectricalequipment;keeptheotherhandinyour
pocketorbehindyourback.
Remember:Theremustbeacompletecircuittocauseelectricalshock.Byobservingtheaboverule,
youmaypreventacurrentfrompassingthroughyourbody.
–Whenusingatester,setthecontrolscorrectlyandusetheapprovedprobeleadsandaccessoriesfor
thattester.
–Standonsuitablerubbermats(obtainedlocally,ifnecessary)toinsulateyoufromgroundssuchas
metaloorstripsandmachineframes.
Observethespecialsafetyprecautionswhenyouworkwithveryhighvoltages;theseinstructionsarein
thesafetysectionsofthemaintenanceinformation.Useextremecarewhenmeasuringhighvoltages.
•Regularlyinspectandmaintainyourelectricalhandtoolstoensuretheyaresafetouse.
•Donotusewornorbrokentoolsandtesters.
•Neverassumethatpowerhasbeendisconnectedfromacircuit.First,checkthatithasbeenpoweredoff.
•Alwayslookcarefullyforpossiblehazardsinyourworkarea.Examplesofthesehazardsarewetoors,
non-groundedpowerextensioncables,conditionsthatmaycauseorallowpowersurges,andmissing
safetygrounds.
•Donottouchliveelectricalcircuitswiththereectivesurfaceofaplasticdentalmirror.Thissurfaceis
conductive,andtouchingalivecircuitcancausepersonalinjuryanddamagetothecomputer.
•Donotservicethefollowingpartswiththepoweronwhentheyareremovedfromtheirnormaloperating
positionsinacomputer:
–Powersupplyunits
–Pumps
–Blowersandfans
–Motorgenerators
andsimilarunits.(Thispracticeensurescorrectgroundingoftheunits.)
•Ifanelectricalaccidentoccurs:
–Usecaution;donotbecomeavictimyourself.
4IdeaCentreA520All-In-OnePCHardwareMaintenanceManual
- IdeaCentreA520All-In-OnePC 1
- HardwareMaintenanceManual 1
- FirstEdition(August2012)25th 4
- ©CopyrightLenovo2012 4
- GS-35F-05925 4
- Contents 5
- 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 8765 9 27
- 10 11 1312 14 15 27
- Leftandrightview 28
- Rearview 29
- Hardwarecomponents 30
- Chapter8.Replacinghardware 33
- Replacingthekeyboardandmouse 34
- Replacingthepoweradapter 34
- .Replacinghardware29 35
- Removingthebasecover 36
- Replacingtheharddiskdrive 37
- Replacingamemorymodule 38
- Replacingthesystemfan 39
- Replacingtheheat-sink 40
- ReplacingtheCPU 41
- Replacingtheopticaldrive 43
- Replacingthesolidstatedisk 45
- Replacingthemotherboard 46
- .Replacinghardware41 47
- Replacingthespeakersystem 49
- ReplacingtheTVtunercard 50
- Chapter8.Replacinghardware45 51
- Replacingthebattery 52
- Chapter8.Replacinghardware47 53
- Removingtherearcover 55
- Replacingthescalarboard 56
- Replacingthetouchcontrolboard 57
- Replacingtheconverterboard 58
- Replacingthepowerswitchboard 59
- ReplacingtheBluetoothmodule 60
- ReplacingtheWi-Ficard 61
- Replacingthecamera 62
- ReplacingtheLEDpanel 63
- FRUlists 65
- .Replacinghardware61 67
- .Replacinghardware63 69
- .Replacinghardware65 71
- Chapter9.Generalinformation 73
Related products and manuals for Computers Lenovo IdeaCentre A520 All-in-One
Computers Lenovo IdeaCentre K415 User Manual
(57 pages)
(57 pages)
Computers Lenovo IdeaCentre K200 User Manual
(32 pages)
(32 pages)
Computers Lenovo IdeaCentre K315 User Manual
(47 pages)
(47 pages)
Computers Lenovo H500 Desktop User Manual
(51 pages)
(51 pages)
Computers Lenovo C315 All-In-One User Manual
(47 pages)
(47 pages)
Computers Lenovo S710 All-in-One User Manual
(118 pages)
(118 pages)
Computers Lenovo Beacon User Manual
(2 pages)
(2 pages)
Computers Lenovo IdeaCentre A720 User Manual
(45 pages)
(45 pages)
Computers Lenovo S710 All-in-One User Manual
(24 pages)
(24 pages)
Computers Lenovo IdeaCentre B305 User Manual
(51 pages)
(51 pages)
Computers Lenovo IdeaCentre B500 User Manual
(43 pages)
(43 pages)
Computers Lenovo H530 Desktop User Manual
(59 pages)
(59 pages)
© 2020, manymanuals.com. All rights reserved. | 0.175 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals