Maintenance Manual
Step6.Removethememorymodulebeingreplacedbyopeningtheretainingclipsasshown.
Step7.Positionthenewmemorymoduleoverthememoryconnector.Makesurethenotch 1 onthe
memorymoduleiscorrectlyalignedwiththeconnectorkey
2 onthesystemboard.Pushthe
memorymodulestraightdownintotheconnectoruntiltheretainingclipsclose.
Step8.Reattachthecomputercover.
ReplacingthePowersupply
Note:Forthisprocedure,ithelpstolaythecomputerat.
ToreplacethePowersupply:
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.Removethecomputercover.Referto“Removingthecomputercover”.
Step5.Removethefrontbezel.Referto“Removingthefrontbezel”.
Step6.Disconnectthepowercablesfromtheconnectorsonmotherboard.
Step7.Removethe3screwsthatsecurethePowersupplytothechassis.
34LenovoH520sHardwareMaintenanceManual