ThinkPad T420s - Page 60

Table2.Numericerrorcodes(continued)
Symptomorerror
FRUoraction,insequence
2102
DetectionerroronHDD2(MiniSATA)
1.ReseattheMiniSATAdevice.
2.MiniSATAdevice.
3.Systemboard.
2110
ReaderroronHDD0(MainHDD)
1.Reseattheharddiskdrive.
2.Mainharddiskdrive.
3.Systemboard.
2111
ReaderroronHDD1(UltrabayHDD)
1.Reseattheharddiskdrive.
2.Ultrabayharddiskdrive.
3.Systemboard.
2112
ReaderroronHDD2(MiniSATA)
1.ReseattheMiniSATAdevice.
2.MiniSATAdevice.
3.Systemboard.
2200
MachineT ypeandSerialNumberareinvalid.
Systemboard.
2201
MachineUUIDisinvalid.
Systemboard.
Errormessages
Table3.Errormessages
Symptomorerror
FRUoraction,insequence
Fanerror.1.Fan.
2.Thermalgrease.
3.Systemboard.
Thermalsensingerror.
Systemboard.
Thissystemdoesnotsupportbatteriesthatarenot
genuineLenovo-madeorauthorized.Thesystemwill
continuetoboot,butmaynotchargeunauthorized
batteries.ATTENTION:Lenovohasnoresponsibilityfor
theperformanceorsafetyofunauthorizedbatteries,and
providesnowarrantiesforfailuresordamagearisingout
oftheiruse.
Replacethebattery.
Beepsymptoms
Table4.Beepsymptoms
Symptomorerror
FRUoraction,insequence
Onebeepandablank,unreadable,orflashingLCD.1.ReseattheLCDconnector.
2.LCDassembly.
3.ExternalCRT.
4.Systemboard.
Onelongandtwoshortbeeps,andablankorunreadable
LCD.
1.Systemboard.
2.LCDassembly.
3.DIMM.
Twoshortbeepswitherrorcodes.
POSTerror.SeeNumericerrorcodes.
Twoshortbeepsandablankscreen.
1.Systemboard.
2.DIMM.
54HardwareMaintenanceManual