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Testing an AC adapter
Test the AC adapter if the computer exhibits any of the following symptoms when it is connected to
AC power:
●
The computer does not turn on.
●
The display does not turn on.
●
The power lights are off.
To test the AC adapter:
NOTE:
The following instructions apply to computers with user-replaceable batteries.
1.
Shut down the computer.
2.
Remove the battery on the computer.
3.
Connect the AC adapter to the computer, and then plug it into an AC outlet.
4.
Turn on the computer.
●
If the power lights turn
on, the AC adapter is working properly.
●
If the power lights remain
off, the AC adapter is not functioning and should be replaced.
Contact support for information on obtaining a replacement AC power adapter.
58 Chapter 6 Power management
ENWW
Summary of Contents for Laptop
Page 1: ...User Guide ...
Page 4: ...iv Safety warning notice ENWW ...
Page 6: ...vi Processor configuration setting select models only ENWW ...
Page 16: ...4 Chapter 1 Welcome ENWW ...
Page 32: ...20 Chapter 2 Getting to know your computer ENWW ...
Page 40: ...28 Chapter 3 Connecting to a network ENWW ...
Page 52: ...40 Chapter 4 Navigating using the keyboard touch gestures and pointing devices ENWW ...
Page 76: ...64 Chapter 7 External cards and devices ENWW ...
Page 84: ...72 Chapter 8 Drives ENWW ...
Page 100: ...88 Chapter 10 Maintenance ENWW ...
Page 115: ...14 Specifications Input power Operating environment ENWW 103 ...
Page 118: ...106 Chapter 14 Specifications ENWW ...
Page 126: ...114 Appendix C Electrostatic discharge ENWW ...