iii
About this manual .......................................iv
Safety information ........................................1
Generalsafety ..................................................... 2
Electricalsafety ................................................... 3
Safetyinspectionguide ..................................... 5
Handlingdevicesthataresensitivetoelectro‐
staticdischarge ................................................... 6
Groundingrequirements .................................. 6
Safetynotices:multilingualtranslations......... 7
Lasercompliancestatement............................ 14
Important service information ..................16
Strategyforreplac ingFRUs............................ 16
Importantnoticeforreplacinga
mainboard .................................................. 17
ImportantinformationaboutreplacingRoHS
compliantFRUs ................................................ 18
General checkout .......................................19
Whattodofirst ................................................. 20
Powersystemcheckout ................................... 21
CheckingtheTabACCharger ................. 21
Checkingtheinternalbatterystatus........ 21
Related service information ......................23
Security .............................................................. 23
Powermanagement ......................................... 23
Activating/DeactivatingtheDisplay ....... 23
Lenovo TAB4 10 Plus ................................24
FRUreplacementnotices................................. 25
Screwnotices............................................... 25
RemovingandreplacinganFRU ................... 26
1010BackCover.......................................... 27
1020Battery ................................................. 29
1030Speaker................................................ 32
1040RearCamera....................................... 34
1050FrontCamera ..................................... 35
1060Earphone............................................. 37
1070SubBoard ........................................... 40
1080Sidekey................................................ 43
1090AntennaSubBoard ........................... 45
1100Fingerprintmodule ........................... 48
1110MainBoard ......................................... 50
Locations............................................................ 54
Partslist ............................................................. 55
Overall.......................................................... 56
ACAdapter ................................................. 58
USBCable .................................................... 58
Screw ............................................................ 58
Others........................................................... 59
Notices ........................................................60
Trademarks........................................................61
Contents