Chapter2.Importantserviceinformation
Thischapterintroducesfollowingimportantserviceinformationthatappliestoallmachinetypessupported
bythismanual:
•“StrategyforreplacingFRUs”onpage19
–“Strategyforreplacingaharddiskdrive,ahybriddrive,orasolid-statedrive”onpage19
–“Importantnoticeforreplacingasystemboard”onpage20
–“Howtouseerrormessage”onpage20
•“StrategyforreplacingFRUsforCTO,specialbidmodel,andstandardmodels”onpage20
–“Productdefinition”onpage20
–“FRUidentification”onpage21
Important:
• If the computer is equipped with both a hard disk drive and an mSATA solid-state drive, do not use the
mSATA solid-state drive as a bootable device. The mSATA solid-state drive is designed and developed for
“cache” function purpose only.
• Advise customers to contact the Lenovo
®
Customer Support Center if they need any assistance in
obtaining or installing any software fixes, drivers, and UEFI BIOS downloads.
• System Disassembly/Reassembly videos that show the FRU removals or replacements for the Lenovo
authorized service technicians.
Strategy for replacing FRUs
Before replacing parts:
Ensure that all software fixes, drivers, and UEFI BIOS downloads are installed before replacing any FRUs
listed in this manual.
After a system board is replaced, ensure that the latest UEFI BIOS is loaded to the system board before
completing the service action.
Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:
•IfyouareinstructedtoreplaceaFRUbutthereplacementdoesnotcorrecttheproblem,reinstallthe
originalFRUbeforeyoucontinue.
•Somecomputershavebothaprocessorboardandasystemboard.Ifyouareinstructedtoreplaceeither
theprocessorboardorthesystemboard,andreplacingoneofthemdoesnotcorrecttheproblem,
reinstallthatboard,andthenreplacetheotherone.
•IfanadapteroradeviceconsistsofmorethanoneFRU,anyoftheFRUsmaybethecauseoftheerror.
Beforereplacingtheadapterordevice,removetheFRUs,onebyone,toseeifthesymptomschange.
ReplaceonlytheFRUthatchangedthesymptoms.
Strategyforreplacingaharddiskdrive,ahybriddrive,orasolid-state
drive
Alwaystrytorunalow-levelformatbeforereplacingaharddiskdrive,ahybriddrive,asolid-statedrive.
Thiswillcauseallcustomerdataonthedrivetobelost.Besurethatthecustomerhasacurrentbackupof
thedatabeforedoingthistask.
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