
Replacing a wireless WAN card
Before you start, print these instructions.
Prerequisites for replacing or installing the wireless WAN card
DANGER
During electrical storms, do not connect the cable to or disconnect it from the telephone outlet
on the wall.
DANGER
Electric current from power, telephone, and communication cables is hazardous. To avoid shock
hazard, disconnect the cables before opening the cover of this slot.
Attention:
Before you start installing a wireless WAN card, touch a metal table or a grounded metal object.
This action reduces any static electricity from your body. The static electricity could damage the card.
Your computer might be equipped with a wireless WAN card. To replace the wireless WAN card, doing
the following:
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait
three to five minutes to let the computer cool.
2. Close the computer display, and turn the computer over.
3. Remove the battery. See “Replacing the battery” on page 69.
4. Loosen the screw
1
, and then remove the cover
2
.
Chapter 6
.
Replacing devices
95
Summary of Contents for ThinkPad Edge E440
Page 1: ...User Guide ThinkPad Edge E440 and E540 ...
Page 6: ...iv User Guide ...
Page 38: ...22 User Guide ...
Page 62: ...46 User Guide ...
Page 76: ...60 User Guide ...
Page 118: ...102 User Guide ...
Page 136: ...120 User Guide ...
Page 142: ...126 User Guide ...
Page 162: ...146 User Guide ...
Page 166: ...150 User Guide ...
Page 172: ...156 User Guide ...
Page 176: ...160 User Guide ...
Page 182: ...Ukraine RoHS 166 User Guide ...
Page 183: ...Appendix F Eurasian compliance mark Copyright Lenovo 2013 167 ...
Page 184: ...168 User Guide ...
Page 185: ......
Page 186: ......