Lenovo ThinkStation C20 Hardware Maintenance Manual

7.Movethejumperfromthestandardposition(pin1andpin2)tothemaintenanceposition(pin2and
pin3).
8.Reinstallanypartsandreconnectanycablesthathavebeenremovedordisconnected.
9.Reinstallthecomputercoverandreconnectthepowercordsforthecomputerandmonitortoelectrical
outlets.Referto“Completingthepartsreplacement”onpage110.
10.Turnonthecomputerandthemonitor.InsertthePOST/BIOSupdate(ash)discintotheopticaldrive.
Therecoverysessionbegins.Therecoverysessionwilltaketwotothreeminutes.Duringthistime,you
willhearaseriesofbeeps.
11.Aftertherecoverysessioniscompleted,theseriesofbeepswillend,andthesystemwillautomatically
turnoff.
12.Repeatstep2throughstep6.
13.MovetheClearCMOS/Recoveryjumperbacktothestandardposition(pin1andpin2).
14.Reinstallanypartsandreconnectanycablesthathavebeenremovedordisconnected.
15.Reinstallthecomputercoverandreconnectanycablesthatweredisconnected.
16.Turnonthecomputerandremovethediscfromtheopticaldrive.
Powermanagement
Powermanagementreducesthepowerconsumptionofcertaincomponentsofthecomputersuchasthe
systempowersupply,processor,harddiskdrives,andsomemonitors.
Automaticcongurationandpowerinterface(ACPI)BIOS
BeinganACPIBIOSsystem,theoperatingsystemisallowedtocontrolthepowermanagementfeatures
ofthecomputerandthesettingforAdvancedPowerManagement(APM)BIOSmodeisignored.Not
alloperatingsystemssupportACPIBIOSmode.
AutomaticPower-Onfeatures
TheAutomaticPower-OnfeatureswithinthePowerManagementmenuallowyoutoenableanddisable
featuresthatturnonthecomputerautomatically.
•SerialPortARingDetect:WiththisfeaturesettoEnabledandanexternalmodemconnectedtoserial
port(COM1),thecomputerwillturnonautomaticallywhenaringisdetectedonthemodem.
•PCIModemRingDetect:WiththisfeaturesettoEnabled,thecomputerwillturnonautomatically
whenaringisdetectedontheinternalmodem.
•PCIWakeUp:ThisfeatureallowsPCIcardsthatsupportthiscapabilitytowakethesystem.
•WakeUponAlarm:Youcanspecifyadateandtimeatwhichthecomputerwillbeturnedon
automatically.Thiscanbeeitherasingleeventoradailyevent.
•WakeonLAN:Ifthecomputerhasaproperlyconguredtoken-ringorEthernetLANadaptercardthatis
WakeonLAN-enabledandthereisremotenetworkmanagementsoftware,youcanusetheWakeonLAN
feature.WhenyousetWakeonLANtoEnabled,thecomputerwillturnonwhenitreceivesaspecic
signalfromanothercomputeronthelocalareanetwork(LAN).
Systemmemoryspeed
TheIntelXeonmicroprocessorfamiliescompatiblewiththisThinkStationcomputerfeatureanintegrated
memorycontroller,whichprovidesthemicroprocessorwithdirectaccesstothesystemmemory.Because
ofthisdesign,thesystemmemoryspeedwillbedeterminedbyanumberoffactors,includingthe
microprocessormodelandthetype,speed,size(capacity),andnumberofDIMMsinstalled.Refertothe
followingtablefortheinformationonthesupportedsystemmemoryspeedforyourcomputermodel.
Chapter11.Additionalserviceinformation231

Lenovo ThinkStation C20 Specifications

General

HDD capacity	500 GB
Internal memory	8 GB
Memory clock speed	1333 MHz
Processor cache	12 MB
Processor frequency	2.4 GHz
Processor front side bus	1066 MHz
Power supply	800 W
Plug and Play	Yes

Weight and Dimensions

Depth	444 mm
Width	130 mm
Height	427 mm