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Contents
About this manual. . . . . . . . . . .
iii
Chapter 7. Removing and replacing a
FRU . . . . . . . . . . . . . . . . . .
43
Chapter 1. Safety information . . . . . . 1
General guidelines . . . . . . . . . . . . .
43
General safety . . . . . . . . . . . . . . . .
1
1010 Battery pack . . . . . . . . . . . . .
44
Electrical safety . . . . . . . . . . . . . . .
2
1020 Bottom slot cover . . . . . . . . . . .
44
Safety inspection guide . . . . . . . . . . . .
3
1030 Optical drive . . . . . . . . . . . . .
45
Handling devices that are sensitive to electrostatic
1040 Memory modules . . . . . . . . . . .
46
discharge. . . . . . . . . . . . . . . . . .
3
1050 Hard disk drive assembly . . . . . . . .
47
Grounding requirements . . . . . . . . . . . .
4
1060 PCI Express Mini Card for wireless LAN . .
49
Safety notices (multilingual translations) . . . . . .
4
1070 mSATA solid-state drive . . . . . . . . .
50
Laser compliance statement (multilingual
translations) . . . . . . . . . . . . . . . .
19
1080 Backup battery . . . . . . . . . . . .
51
1090 Keyboard . . . . . . . . . . . . . .
51
Chapter 2. Important service
1100 Keyboard bezel . . . . . . . . . . . .
53
information . . . . . . . . . . . . . .
27
1110 Fingerprint board and LED board . . . . .
55
Strategy for replacing FRUs . . . . . . . . .
27
1120 Power board . . . . . . . . . . . . .
57
Strategy for replacing a hard disk drive . . .
28
1130 Microphone assembly . . . . . . . . .
58
Important notice for replacing a system
1140 I/O board
. . . . . . . . . . . . . .
58
board . . . . . . . . . . . . . . . .
28
1150 System board assembly and USB board . .
60
Important information about replacing RoHS
1160 Thermal module . . . . . . . . . . . .
62
compliant FRUs . . . . . . . . . . . . . .
28
1170 CPU . . . . . . . . . . . . . . . .
64
Chapter 3. General checkout . . . . .
29
1180 LCD unit . . . . . . . . . . . . . . .
65
What to do first . . . . . . . . . . . . . .
29
1190 Speaker assembly . . . . . . . . . . .
67
Power system checkout . . . . . . . . . . .
30
1200 DC-in connector and base cover . . . . .
68
Checking the ac power adapter . . . . . .
30
2010 LCD front bezel . . . . . . . . . . . .
70
Checking operational charging
. . . . . .
31
2020 Integrated camera . . . . . . . . . . .
71
Checking the battery pack . . . . . . . .
31
2030 LCD panel, LCD cable, and hinges
. . . .
72
2040 Antenna assembly and LCD rear cover . . .
74
Chapter 4. Related service
information . . . . . . . . . . . . . .
33
Chapter 8. Locations . . . . . . . . .
77
Recovering the computer settings . . . . . . .
33
Front view . . . . . . . . . . . . . . . .
77
Passwords . . . . . . . . . . . . . . . .
33
Right-side view . . . . . . . . . . . . . .
78
Power-on password . . . . . . . . . . .
34
Bottom and left-side view . . . . . . . . . .
78
Supervisor password . . . . . . . . . .
34
Chapter 9. Parts list . . . . . . . . . .
79
Power management
. . . . . . . . . . . .
34
Overall . . . . . . . . . . . . . . . . . .
80
Screen blank mode . . . . . . . . . . .
34
LCD FRUs . . . . . . . . . . . . . . . .
83
Sleep mode . . . . . . . . . . . . . .
34
Keyboard . . . . . . . . . . . . . . . . .
85
Hibernation mode
. . . . . . . . . . .
35
Miscellaneous parts
. . . . . . . . . . . .
87
Chapter 5. Lenovo B480 . . . . . . . .
37
ac power adapters . . . . . . . . . . . . .
88
Specifications . . . . . . . . . . . . . . .
37
Power cords
. . . . . . . . . . . . . . .
89
Status indicators . . . . . . . . . . . . . .
38
Appendix A. Notices . . . . . . . . . .
93
Fn key combinations . . . . . . . . . . . .
39
Electronic emissions notices . . . . . . . . .
94
Chapter 6. FRU replacement
Trademarks . . . . . . . . . . . . . . . .
94
notices . . . . . . . . . . . . . . . .
41
Screw notices . . . . . . . . . . . . . . .
41
© Copyright Lenovo 2012
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