Lenovo IdeaCentre A520 All-in-One User Manual Page 50
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Step12.Detachthespeakersfromthechassis.
Step13.Toinstallthenewspeakersystem:
a.Attachthenewspeakercabletothechassis.
b.Lineupthemotherboardwiththechassisandslideitintoposition.Aligntheholesonthe
motherboardwiththemountingholesonthechassisandsecureittothechassiswiththe
7screws.
c.Lineupthenewspeakersystemwiththemountingholesonthechassisandsecurethenew
speakersystemwiththe4screws.
d.Connectthenewspeakercabletotheconnectoronthemotherboard.
Step14.Reattachtheopticaldrive,heat-sink,systemfan,andharddiskdrivetothemotherboard.
Step15.Reattachthebasecoverandsecureitwiththescrews.
ReplacingtheTVtunercard
Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingthebasecover.
ToreplacetheTVtunercard:
Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating
system,andturnoffthecomputerandallattacheddevices.
Step2.Unplugallpowercordsfromelectricaloutlets.
Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)
cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.
Step4.Removethebasecover.Referto“Removingthebasecover”.
Step5.Removetheharddiskdrive.Referto“Replacingtheharddiskdrive” .
Step6.Removetheopticaldrive.Referto“Replacingtheopticaldrive” .
Step7.Removethesystemfan.Referto“Replacingthesystemfan” .
Step8.Removetheheat-sink.Referto“Replacingtheheat-sink” .
Step9.Removeallthecablesconnectedtothemotherboard.
Step10.Removethe4screwsthatsecurethespeakers,thendetachthemfromthechassisandputthem
aside.
44IdeaCentreA520All-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
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