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
Strategyforreplacingaharddiskdrive .. 17
Importantnoticeforreplacingasystem
board ............................................................. 17
ImportantinformationaboutreplacingRoHS
compliantFRUs ................................................. 18
General checkout........................................19
Whattodofirst.................................................. 20
Powersystemcheckout .................................... 21
CheckingtheACadapter........................... 21
Checkingoperationalcharging................. 21
Checkingthebatterypack ......................... 22
Related service information.......................23
RestoringthefactorycontentsbyusingRecov‐
eryDiscSet......................................................... 23
Passwords........................................................... 24
Power‐onpassword.................................... 24
Hard‐diskpassword ................................... 24
Supervisorpassword .................................. 24
Powermanagement .......................................... 25
Screenblankstate........................................ 25
Puttingthecomputertosleeporshuttingit
down ............................................................. 25
Lenovo B40-30/B40-45/B40-70...................27
Specifications ..................................................... 27
Statusindicators ................................................ 29
Fnkeycombinations......................................... 30
Hotkeys............................................................... 30
FRUreplacementnotices.................................. 31
Screwnotices................................................ 31
RemovingandreplacinganFRU.................... 32
1010Batterypack......................................... 33
1020Opticaldrive ....................................... 34
1030Bottom slotcover................................ 36
1040Harddiskdrive................................... 37
1050DIMM................................................... 39
1060PCIExpressMiniCardforwireless
LAN/WAN....................................................40
1070Keyboard..............................................41
1080Keyboardbezel ................................... 43
1090Fingerprint,powerboardandled
board.............................................................. 45
1100USBboard............................................ 47
1110Systemboard.......................................48
1120Fanandheatsinkassembly ..............50
1130Speakers ...............................................51
1140LCDunitandbasecover ................... 52
1150LCDfrontbezel................................... 56
1160LCDpanel............................................ 57
1170LCDhinges .......................................... 59
1180Antenna,LCDcable,andintegrated
camera ........................................................... 60
Locations ............................................................. 62
Frontview.....................................................62
Right‐sideview ............................................ 63
Bottomandleft‐sideview ..........................64
Partslist............................................................... 65
Overall...........................................................66
LCDFRUs.....................................................70
Keyboard.......................................................72
Miscellaneousparts..................................... 75
ACadapters.................................................. 76
Screws............................................................ 76
Powercords.................................................. 77
Notices .........................................................80
Trademarks......................................................... 81