Lenovo ThinkPad L420 Handleiding

Lenovo Laptop ThinkPad L420

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Pagina 1/172

HardwareMaintenanceManual

ThinkPadL420,L421,andL520

Note

Beforeusingthisinformationandtheproductitsupports,besuretoreadthegeneralinformationunder

AppendixA“Notices”onpage163 .

Firstedition(March2011)

©CopyrightLenovo2011.

LIMITEDANDRESTRICTEDRIGHTSNOTICE:IfdataorsoftwareisdeliveredpursuantaGeneralServicesAdministration

“GSA”contract,use,reproduction,ordisclosureissubjecttorestrictionssetforthinContractNo.GS-35F-05925.

Contents

Aboutthismanual...........iii

Chapter1.Safetyinformation.....1

Generalsafety................1

Electricalsafety...............2

Safetyinspectionguide............3

Handlingdevicesthataresensitivetoelectrostatic

discharge..................3

Groundingrequirements............4

Safetynotices(multilingualtranslations)......4

Lasercompliancestatement(multilingual

translations)................17

Chapter2.Importantservice

information..............25

StrategyforreplacingFRUs.........25

Strategyforreplacingaharddiskdrive...26

Importantnoticeforreplacingasystem

board................26

Howtouseerrormessage........26

StrategyforreplacingFRUsforCTO,CMV,and

GAV..................

Productdenition............26

FRUidenticationforCTO,CMV,andGAV

products...............27

Chapter3.Generalcheckout.....29

Whattodorst..............29

Checkoutguide..............30

DiagnosticsusingPC-DoctorforDOS....30

LenovoThinkVantageToolbox.......33

FRUtests...............33

Powersystemcheckout...........34

Checkingtheacpoweradapter......34

Checkingoperationalcharging......35

Checkingthebatterypack........35

Checkingthebackupbattery.......36

Chapter4.Relatedservice

information..............37

RestoringthefactorycontentsbyusingRecovery

DiscSet.................37

Passwords................38

Power-onpassword...........38

Hard-diskpassword...........38

Supervisorpassword..........39

Howtoremovethepower-onpassword...39

Howtoremovethehard-diskpassword...39

Powermanagement............40

Screenblankmode...........40

Sleep(standby)mode..........40

Hibernationmode...........41

Symptom-to-FRUindex...........41

Numericerrorcodes..........42

Errormessages............44

No-beepsymptoms...........44

LCD-relatedsymptoms.........44

Intermittentproblems..........45

Undeterminedproblems.........45

Chapter5.Statusindicators.....47

Chapter6.Fnkeycombinations...49

Chapter7.FRUreplacement

notices................53

Screwnotices...............53

Retainingserialnumbers...........54

Restoringtheserialnumberofthesystem

unit.................54

RetainingtheUUID...........54

ReadingorwritingtheECAinformation...55

Chapter8.Removingandreplacinga

FRU..................57

1010Batterypack.............57

1020ExpressCardblankbezelandMediaCard

blankbezel................58

1030Opticaldriveortravelcover.......60

1040Thermalcover.............61

1050Harddiskdriveorsolidstatedrive

assembly.................62

1060DIMM................64

1070Fanassembly.............65

1080CPU................68

1090SIMslotcover............69

1100WirelessWANslotcoverandPCIExpress

MiniCardforwirelessWAN..........71

1110Palmrestassemblywithcables......73

1120PCIExpressMiniCardforwirelessLAN..76

1130Backupbattery............78

1140Bluetoothdaughtercard........78

1150MediaCardReaderslotboardandMedia

CardReadercableassembly.........79

1160Keyboard..............81

1170Keyboardbezel............83

©CopyrightLenovo2011 i

Product specificaties

Merk:	Lenovo
Categorie:	Laptop
Model:	ThinkPad L420
Kleur van het product:	Zwart
Diepte:	233 mm
Hoogte:	32 mm
Beeldschermdiagonaal:	14 "
Resolutie:	1366 x 768 Pixels
Ethernet LAN:	Ja
Maximum resolutie:	1366 x 768 Pixels
Accu/Batterij voltage:	10.8 V
Aantal luidsprekers:	2
AC-adapter, vermogen:	65 W
Processor cache:	3 MB
Maximum intern geheugen:	8 GB
Kloksnelheid geheugen:	1333 MHz
Het aantal geïnstalleerde HDD's:	1
HDD capaciteit:	320 GB
HDD interface:	SATA
HDD rotatiesnelheid:	5400 RPM
Front-side bus processor:	1333 MHz
Vermogen luidsprekers:	1.5 W
Audio-kwaliteit:	24 Bit
Overdrachtssnelheid:	15.7 Mbit/s
Floppy drive geinstalleerd:	Nee
Aantal ondersteunde processoren:	1
Max. aantal SMP-processoren:	1
Toegangstijd:	140 ms