255 All-In-One PC Hardware Maintenance Manual

Step5.Disconnectthepowerswitchboardcablefromtheconnectoronthemotherboard.1

Step6.Removethescrewthatsecuresthepowerswitchboardtotherearcoverandliftupthepower

switchboardtoremoveit.2

Step7.Toinstallthepowerswitchboard:

a.Lineuptheholesonthenewpowerswitchboardwiththemountingholesontherearcover

andsecurethenewpowerswitchboardwiththescrews.

b.Connectthedatacabletotheconnectoronthenewmotherboard.

Step8.Reattachtherearcoverandsecureitwiththescrews.

Replacingthemotherboard

Note:Turnoffthecomputerandwait3to5minutestoletitcooldownbeforeremovingtherearcover.

Toreplacethemotherboard:

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.Removetherearcover.Referto“Removingtherearcover”.

Step5.Removeallmemorymodules.Referto“Replacingamemorymodule”.

Step6.Removetheheat-sink.Referto“Replacingtheheat-sink”.

Step7.RemovetheWi-Ficard.Referto“ReplacingtheWi-Ficard”.

Chapter8.Replacinghardware39