Plastic parts
.......................................................................................................
36
Cables and connectors
.....................................................................................
37
Drive handling
...................................................................................................
37
Grounding guidelines
.........................................................................................................
38
Electrostatic discharge damage
........................................................................
38
Packaging and transporting guidelines
.............................................
39
Workstation guidelines
.....................................................................
39
Equipment guidelines
.......................................................................
40
Component replacement procedures
.................................................................................................
41
Service tag
.........................................................................................................................
41
Battery
...............................................................................................................................
42
Using the optional security screw
......................................................................................
43
Bottom door
.......................................................................................................................
44
SIM
....................................................................................................................................
45
Optical drive
.......................................................................................................................
46
Hard drive
..........................................................................................................................
48
Memory modules
...............................................................................................................
50
WWAN module
..................................................................................................................
52
WLAN/Bluetooth combo card
............................................................................................
54
Keyboard
...........................................................................................................................
56
Heat shield
.........................................................................................................................
59
Fan
.....................................................................................................................................
61
Heat sink
............................................................................................................................
63
Processor
...........................................................................................................................
66
Top cover
...........................................................................................................................
67
Fingerprint reader board
....................................................................................................
75
Speaker assembly
.............................................................................................................
76
Function board/Power button board assembly
..................................................................
79
Audio board
.......................................................................................................................
81
USB connector assembly
..................................................................................................
82
Battery cable
......................................................................................................................
84
System board
.....................................................................................................................
85
RTC battery
.......................................................................................................................
88
Optical drive extension board (4540s models only)
...........................................................
90
Hard drive extension board (4540s models only)
..............................................................
92
Power cable
.......................................................................................................................
94
Latch assembly
..................................................................................................................
95
Display assembly
...............................................................................................................
97
5
Computer Setup (BIOS) and Advanced System Diagnostics
.................................................................
105
Using Computer Setup
.....................................................................................................................
105
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