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Lenovo IdeaCentre B520 User Manual Page 5
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Chapter 1. About this manual
3
California Senate Bills 20, 50:
•
http://www.ciwmb
.ca.gov/HHW/Events/AnnualConf/2004/
presentation/MP
apar
ian.pdf
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Contents
1
Hardware Maintenance Manual
2
About this manual
3
Chapter 1. About this manual
5
Safety information
6
Electrical safety
7
Safety inspection guide
9
Grounding requirements
10
Safety notices
11
10
12
11
13
General information
14
General Checkout
15
Problem determination tips
16
Using the Setup Utility
17
Using passwords
18
Power-On Password
19
Selecting a startup device
20
19
21
Symptom-to-FRU Index
22
Beep symptoms
23
POST error codes
23
Locations
24
23
25
Left and right view
25
24
26
Rear view
26
25
27
Hardware components
27
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29
Replacing hardware
30
Removing the computer cover
31
Removing the back deco
32
Removing the computer stand
33
Replacing a memory module
34
33
35
Replacing the optical drive
36
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38
Replacing the hard disk drive
39
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40
Removing the EMI cover
41
Replacing the converter board
42
Replacing the system fan
43
Replacing the heatsink
44
Replacing the CPU
45
44
46
45
47
Replacing the rear I/O module
48
Replacing the speaker system
49
Replacing the 3D module
50
Replacing the TV tuner card
51
Replacing the WLAN card
52
51
53
Replacing the power supply
54
Replacing the touch module
55
Replacing the motherboard
56
Replacing the LED panel
57
Replacing the keyboard
58
Replacing the mouse
59
Replacing the power cord
60
FRU lists
61
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Additional Service
71
Information
71
Statement
72
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73
Trademarks
73
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