Lenovo ThinkStation C20 - Page 106

Thisdocumentprovidesinstructionsonhowtoreplacethepowersupplyassembly.
CAUTION:
Neverremovethecoveronapowersupplyoranypartthathasthefollowinglabelattached.
Hazardousvoltage,current,andenergylevelsarepresentinsideanycomponentthathasthislabel
attached.Therearenoserviceablepartsinsidethesecomponents.
CAUTION:
Theheatsinkandmicroprocessormightbeveryhot.Turnoffthecomputerandwait
threetoveminutestoletthecomputercoolbeforeremovingthecomputercover.
Toreplacethepowersupplyassembly,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Removeanylockingdevicethatsecuresthecomputercover,suchasapadlockoranintegrated
cablelock.
3.Removethecomputercover.See“Removingthecomputercover”onpage74.
4.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage75.
5.RemovethePCIcardholder.See“RemovingandreinstallingthePCIcardholder”onpage76.
6.Removetheopticaldrive.See“Replacingtheopticaldrive”onpage88.
7.Pivottheopticaldrivebracketasshowninthefollowingillustrationandthenremoveitfromthechassis.
Figure30.Removingtheopticaldrivebracket
100ThinkStationHardwareMaintenanceManual