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Chapter
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Safety
information
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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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