Lenovo K49 Notebook User Manual Page 5
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Aboutthismanual
ThismanualprovidesserviceandreferenceinformationforthefollowingLenovo
®
products.
Machine
Machinetype(MT)
ZhaoYangK4920164
Usethismanualtotroubleshootproblems.
Themanualisdividedintothefollowingsections:
•Thecommonsectionsprovidegeneralinformation,guidelines,andsafetyinformationrequiredfor
servicingcomputers.
•Theproduct-specicsectionincludesservice,reference,andproduct-specicpartsinformation.
Important:
•ThismanualisintendedonlyfortrainedservicetechnicianswhoarefamiliarwithLenovoproducts.Use
thismanualtotroubleshootproblemseffectively.
•BeforeservicingaLenovoproduct,besuretoreadalltheinformationunderChapter1“Safety
information”onpage1
andChapter2“Importantserviceinformation”onpage27.
©CopyrightLenovo2012,2013
iii
- HardwareMaintenanceManual 1
- FourthEdition(May2013) 2
- ©CopyrightLenovo2012,2013 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.ZhaoYangK49 43
- Statusindicators 44
- Fnkeycombinations 45
- 40HardwareMaintenanceManual 46
- Screwnotices 47
- Generalguidelines 49
- 1010Batterypack 50
- 1020Bottomslotcover 50
- 1030Opticaldriveorblankbezel 51
- 1040Memorymodules 52
- 1050Harddiskdriveassembly 53
- 48HardwareMaintenanceManual 54
- StepScrew(quantity)Color 55
- 4.0kgf-cm 55
- 1.85kgf-cm 56
- 1080Thermalmodule 58
- .RemovingandreplacingaFRU53 59
- 1100Keyboard 61
- Removalstepsofkeyboard 62
- Removethescrews1 62
- 56HardwareMaintenanceManual 62
- .RemovingandreplacingaFRU57 63
- 1110Keyboardbezel 64
- Removalstepsofkeyboardbezel 65
- Removethescrews4 65
- .RemovingandreplacingaFRU59 65
- 1120Fingerprintboard 66
- 1140Powerboard 69
- 1150Backupbattery 69
- 1160Speakerassembly 70
- 1170Systemboardassembly 72
- 1180LCDunit 73
- 1.6kgf-cm 74
- 2010LCDfrontbezel 77
- 2020Integratedcamera 79
- 2030LCDpanelandLCDcable 79
- 74HardwareMaintenanceManual 80
- 2040Hinges 81
- 78HardwareMaintenanceManual 84
- Chapter8.Locations 85
- Right-sideview 86
- Bottomandleft-sideview 87
- 82HardwareMaintenanceManual 88
- Chapter9.Partslist 89
- .Partslist85 91
- 86HardwareMaintenanceManual 92
- .Partslist87 93
- Keyboard 94
- Miscellaneousparts 94
- Powercords 94
- .Partslist89 95
- 90HardwareMaintenanceManual 96
- AppendixA.Notices 97
- Electronicemissionsnotices 98
- Trademarks 98
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