Lenovo ThinkCentre M90 Betriebsanweisung PDF herunterladen (Seite 49)

5. Push the metal tab 1 on the top of the internal speaker outward and slide the

internal speaker upward to completely remove it from the chassis.

Figure 33. Removing the old internal speaker

Chapter 2. Installing or replacing hardware 41

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 89 90

ThinkCentre 1
User Guide 1
Contents 5
Index ...............77 6
Important safety information 7
2 User Guide 10
Chapter 1. Product overview 11
Specifications 12
Software overview 13
Software provided by Lenovo 13
Adobe Reader 14
Antivirus software 14
Locations 15
8 User Guide 16
Chapter 1. Product overview 9 17
Locating components 18
Locating internal drives 19
12 User Guide 20
Installing external options 22
Removing the computer cover 22
16 User Guide 24
18 User Guide 26
20 User Guide 28
22 User Guide 30
Replacing the battery 32
26 User Guide 34
28 User Guide 36
30 User Guide 38
32 User Guide 40
34 User Guide 42
36 User Guide 44
38 User Guide 46
40 User Guide 48
42 User Guide 50
Installing security features 52
Integrated cable lock 53
Password protection 54
7. Repeat step 1 and step 2 55
48 User Guide 56
Creating recovery media 57
Using recovery media 58
Performing a backup operation 59
52 User Guide 60
Creating a rescue medium 61
Using a rescue medium 62
Solving recovery problems 63
56 User Guide 64
Viewing and changing settings 65
Using passwords 65
Password considerations 66
Power-On Password 66
Administrator Password 66
Hard Disk Password 66
Selecting a startup device 67
60 User Guide 68
Using system programs 69
62 User Guide 70
64 User Guide 72
Basic troubleshooting 73
Diagnostic programs 74
Lenovo ThinkVantage Toolbox 74
PC-Doctor for DOS 75
Cleaning an optical mouse 76
Information resources 77
Online Books folder 77
Lenovo ThinkVantage Tools 77
Lenovo Welcome 78
Access Help 78
Safety and Warranty 78
Help and service 79
Calling for service 79
Using other services 80
74 User Guide 82
Appendix. Notices 83
Television output notice 84
European conformance CE mark 84
Trademarks 84
78 User Guide 86
80 User Guide 88
Part Number: 71Y7146 90
Printed in USA 90
(1P) P/N: 71Y7146 90

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