Lenovo H520g Desktop Bedienungsanleitung PDF herunterladen (Seite 77)

Removingandreinstallingthefrontbezel

Attention:

Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”

intheUserGuide.ToobtainacopyoftheUserGuide,goto:

http://www.lenovo.com/ThinkCentreUserGuides

Thissectionprovidesinstructionsonhowtoremoveandreinstallthefrontbezel.

Toremoveandreinstallthefrontbezel,dothefollowing:

1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.

2.Removethecomputercover.See“Removingthecomputercover”onpage72.

3.Removethefrontbezelbyreleasingthethreeplastictabsontheleftsideandpivotingthefrontbezel

outward.

Figure7.Removingthefrontbezel

Chapter9.ReplacingFRUs73

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 111 112

LenovoH520g 1
HardwareMaintenanceManual 1
FirstEdition(January2013) 2
Contents 3
Chapter10.FRUlists.........95 4
Chapter11.Additionalservice 4
AppendixA.Notices.........103 4
Index.................105 4
Chapter1.Aboutthismanual 5
Chapter2.Safetyinformation 7
Voltage-selectionswitch 9
Safetyinspectionguide 9
Groundingrequirements 10
Chapter2.Safetyinformation7 11
.Safetyinformation9 13
Chapter2.Safetyinformation11 15
.Safetyinformation13 17
.Safetyinformation15 19
Chapter2.Safetyinformation17 21
≥18kg≥32kg≥55kg 23
.Safetyinformation21 25
Chapter2.Safetyinformation25 29
Chapter3.Generalinformation 33
LenovoSupportWebsite 34
Chapter4.Generalcheckout 35
Basictroubleshooting 37
Troubleshootingprocedure 38
Troubleshooting 39
Audioproblems 39
NoaudioinWindows 40
CDproblems 41
DVDproblems 42
Intermittentproblems 43
Harddiskdriveproblems 43
Monitorproblems 46
Networkingproblems 47
AwirelessLANproblem 49
AwirelessWANproblem 49
Optionproblems 50
Performanceandlockupproblems 51
Printerproblems 53
Serialportproblems 53
Softwareproblems 54
USBproblems 55
Diagnostics 55
LenovoSolutionCenter 55
Viewingandchangingsettings 57
Usingpasswords 57
Passwordconsiderations 58
Power-OnPassword 58
AdministratorPassword 58
HardDiskPassword 58
Enablingordisablingadevice 59
Selectingastartupdevice 59
EnablingErPcompliancemode 60
ExitingtheSetupUtilityprogram 61
Chapter7.Symptom-to-FRUindex 63
POSTerrorcodes 64
.Symptom-to-FRUindex61 65
Miscellaneouserrormessages 66
Undeterminedproblems 67
Chapter8.Locations 69
LocatingmajorFRUsandCRUs 70
Locatingpartsonthesystemboard 72
Locatinginternaldrives 73
Chapter9.ReplacingFRUs 75
Removingthecomputercover 76
Attention: 77
Figure7.Removingthefrontbezel 77
InstallingorreplacingaPCIcard 78
.ReplacingFRUs75 79
Figure10.RemovingaPCIcard 80
Replacingthebattery 81
Chapter9.ReplacingFRUs79 83
Replacingtheopticaldrive 84
.ReplacingFRUs81 85
Chapter9.ReplacingFRUs83 87
Replacingthemicroprocessor 89
2onthemicroprocessor 91
Chapter9.ReplacingFRUs87 91
Replacingthesystemboard 92
Chapter9.ReplacingFRUs89 93
Chapter9.ReplacingFRUs91 95
Completingthepartsreplacement 97
Chapter10.FRUlists 99
.FRUlists97 101
Powermanagement 106
AutomaticPower-onfeatures 106
AppendixA.Notices 107
EuropeanconformanceCEmark 108
Trademarks 108
Televisionoutputnotice 108

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