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Contents
Aboutthismanual...........iii
Chapter1.Safetyinformation......1
Generalsafety................1
Electricalsafety...............2
Safetyinspectionguide............3
Handlingdevicesthataresensitivetoelectrostatic
discharge..................3
Groundingrequirements............4
Safetynotices(multilingualtranslations)......4
Lasercompliancestatement(multilingual
translations)................19
Chapter2.Importantservice
information..............27
StrategyforreplacingFRUs.........27
Strategyforreplacingaharddiskdrive...28
Importantnoticeforreplacingasystem
board................28
ImportantinformationaboutreplacingRoHS
compliantFRUs..............28
Chapter3.Generalcheckout.....29
Whattodorst..............29
Powersystemcheckout...........30
Checkingtheacpoweradapter......30
Checkingoperationalcharging......31
Checkingthebatterypack........31
Chapter4.Relatedservice
information..............33
Recoveringthecomputersettings.......33
Passwords................33
Power-onpassword...........34
Supervisorpassword..........34
Powermanagement............34
Screenblankmode...........34
Sleepmode..............34
Hibernationmode...........35
Chapter5.LenovoB475e.......37
Specications...............37
Statusindicators..............38
Fnkeycombinations............39
Chapter6.FRUreplacement
notices................41
Screwnotices...............41
Chapter7.Removingandreplacinga
FRU..................43
Generalguidelines.............43
1010Batterypack.............44
1020Bottomslotcover...........44
1030Harddiskdrive............45
1040Opticaldrive.............47
1050Memorymodules...........47
1060PCIExpressMiniCardforwirelessLAN..48
1070Backupbattery............49
1080Keyboard..............50
1090Keyboardbezel............52
1100LEDboardandpowerboard.......55
1110Microphoneassembly.........56
1120I/Oboard..............56
1130Systemboardassembly.........58
1140LCDunit...............60
1150Thermalfanassembly.........62
1160Speakerassembly...........65
1170DC-insubcardandbasecover......65
2010LCDfrontbezel............67
2020Integratedcamera...........69
2030LCDpanel,LCDcable,andhinges....70
2040Antennaassembly...........72
Chapter8.Locations.........75
Frontview................75
Bottomview...............76
Chapter9.Partslist..........77
Overall..................78
LCDFRUs................80
Keyboard.................82
Miscellaneousparts............85
acpoweradapters.............85
Powercords...............85
AppendixA.Notices..........91
Electronicemissionsnotices.........92
Trademarks................92
©CopyrightLenovo2012
i
- HardwareMaintenanceManual 1
- ThirdEdition(December2012) 2
- ©CopyrightLenovo2012 2
- Contents 3
- Aboutthismanual 5
- Chapter1.Safetyinformation 7
- Electricalsafety 8
- Safetyinspectionguide 9
- Groundingrequirements 10
- Chapter1.Safetyinformation5 11
- 6HardwareMaintenanceManual 12
- .Safetyinformation7 13
- Chapter1.Safetyinformation9 15
- VORSICHT 17
- .Safetyinformation11 17
- 12HardwareMaintenanceManual 18
- .Safetyinformation13 19
- 14HardwareMaintenanceManual 20
- .Safetyinformation15 21
- 16HardwareMaintenanceManual 22
- .Safetyinformation17 23
- 18HardwareMaintenanceManual 24
- Chapter1.Safetyinformation19 25
- 20HardwareMaintenanceManual 26
- .Safetyinformation21 27
- 22HardwareMaintenanceManual 28
- .Safetyinformation23 29
- 24HardwareMaintenanceManual 30
- .Safetyinformation25 31
- 26HardwareMaintenanceManual 32
- StrategyforreplacingFRUs 33
- Currentororiginalpart 34
- ReplacementFRU 34
- MustbeRoHSMustbeRoHS 34
- Chapter3.Generalcheckout 35
- Powersystemcheckout 36
- Checkingtheacpoweradapter 36
- Checkingoperationalcharging 37
- Checkingthebatterypack 37
- 32HardwareMaintenanceManual 38
- Recoveringthecomputersettings 39
- Passwords 39
- Power-onpassword 40
- Supervisorpassword 40
- Powermanagement 40
- Screenblankmode 40
- Sleepmode 40
- Hibernationmode 41
- 36HardwareMaintenanceManual 42
- Chapter5.LenovoB475e 43
- Statusindicators 44
- Fnkeycombinations 45
- 40HardwareMaintenanceManual 46
- Screwnotices 47
- Generalguidelines 49
- 1010Batterypack 50
- 1020Bottomslotcover 50
- 1030Harddiskdrive 51
- 1040Opticaldrive 53
- 1050Memorymodules 53
- 1070Backupbattery 55
- 1080Keyboard 56
- .RemovingandreplacingaFRU51 57
- 1090Keyboardbezel 58
- Removalstepsofkeyboardbezel 59
- Removethescrew3 59
- .RemovingandreplacingaFRU53 59
- Detachtheconnectors 60
- Removethekeyboardbezel 60
- 54HardwareMaintenanceManual 60
- 1100LEDboardandpowerboard 61
- 1110Microphoneassembly 62
- 1120I/Oboard 62
- StepScrew(quantity)Color 63
- 1.85kgf-cm 63
- 1130Systemboardassembly 64
- Removalstepsofsystemboard 65
- .RemovingandreplacingaFRU59 65
- 1140LCDunit 66
- 1.6kgf-cm 67
- 1150Thermalfanassembly 68
- 2to4,butdonotremovethem 69
- 1160Speakerassembly 71
- 1170DC-insubcardandbasecover 71
- RemovalstepsofDC-insubcard 72
- 66HardwareMaintenanceManual 72
- 2010LCDfrontbezel 73
- 2020Integratedcamera 75
- 2040Antennaassembly 78
- 74HardwareMaintenanceManual 80
- Frontview 81
- Bottomview 82
- Chapter9.Partslist 83
- .Partslist79 85
- 80HardwareMaintenanceManual 86
- Chapter9.Partslist81 87
- Keyboard 88
- .Partslist83 89
- 84HardwareMaintenanceManual 90
- Miscellaneousparts 91
- Powercords 91
- 86HardwareMaintenanceManual 92
- .Partslist87 93
- 88HardwareMaintenanceManual 94
- .Partslist89 95
- 90HardwareMaintenanceManual 96
- AppendixA.Notices 97
- Electronicemissionsnotices 98
- Trademarks 98
- PartNumber: 100
- PrintedinChina 100
- (1P)P/N: 100
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