Specifications:649/649928-thinkpad_l420.pdf file (07 Mar 2024)
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Lenovo THINKPAD L420 Laptop PDF Hardware Maintenance Manual (Updated: Thursday 7th of March 2024 01:05:34 AM)
Rating: 4.6 (rated by 52 users)
Compatible devices: NetVista A22p, E46, ThinkPad S5 2nd Generation, ThinkPad T400s 2823, ideapad 300S-11IBR, K14 Gen 1, N20p Chromebook, T61p.
Recommended Documentation:
60, Retainingserialnumbers Thissectionincludesthefollowingdescriptions: •“Restoringtheserialnumberofthesystemunit”onpage54 •“RetainingtheUUID”onpage54 •“ReadingorwritingtheECAinformation”onpage55 Restoringtheserialnumberofthesystemunit Whenthecomputerwasmanufactured,the…
148, Table38.Partslist—Overall(continued) No. FRU(Overall) FRUno. CRU ID 23 CPUassembly,IntelCorei7-2620MProcessor(2.70GHz) •7826-CTO,39x •7827-CTO,4Cx,4Hx,4Kx,4Px,4Qx,4Ux,4Vx,5Ax •7829-CTO,4Wx,4Ex,4Fx,4Gx,4Hx,4Nx,4Px •7853-CTO •7854-CTO,4Xx •7856-CTO •5015-CTO •5016-CTO,4Tx,4Ux,4Xx,…
45, Lenovo THINKPAD L420 Attention:IftheuserHDPhasbeenforgotten,checkwhetheramasterHDPhasbeenset.Ifithas,itcanbe usedforaccesstotheharddiskdrive.IfnomasterHDPisavailable,neitherLenovonorLenovoauthorized servicetechniciansprovideanyservicestoreseteithertheuserorthemasterHDP ,ortorecoverdatafrom theharddiskdrive.Theharddisk…
68, Table12.Removalstepsofthermalcover Note:Loosenthescrews1,butdonotremovethem. 1 1 1 1 1 1 2 Attention:Donottouchorapplyanyexcessiveforcetothefanmotorlocatedintheslot.Itmightcausedamageto thefanassemblyormightcausethecomputertomalfunction. 1050Harddiskdriveorsolidstatedriveassembly Fora…
100, Table29.LocationofmajorsensitivecomponentsonthesystemboardinThinkPadL420,L421,andL520models Thefollowingcomponentssolderedonthetopsideofthesystemboardareextremelysensitive.Whenyouservice thesystemboard,avoidanykindofroughhandling. aAccelerometerchipfortheHDDActiveProtectionSystem bMultiChipPac…
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