Lenovo ThinkPad T430u, User Manual

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Solution : Gently clean the surface of the reader with a dry, soft, lint-free cloth.
• Problem : The reader often fails to enroll or authenticate your fingerprint.
Solution : If the surface of the reader is dirty, stained, or wet, gently clean the surface of the reader
with a dry, soft, lint-free cloth.
For tips on how to maintain the fingerprint reader, refer to “Using a fingerprint reader” on page 49.
Battery and power problems
This topic contains instructions on troubleshooting battery and power problems.
Battery problems
• Problem : The battery pack cannot be fully charged in the standard charge time when the computer is
powered off.
Solution : The battery pack might be over-discharged. Do the following:
1. Turn off the computer.
2. Connect the ac power adapter to the computer and let it charge.
If a quick charger is available, use it to charge the over-discharged battery.
If the internal battery cannot be fully charged in 24 hours, have your computer serviced.
• Problem : Your computer shuts down before the Power Manager battery gauge on the task bar shows that
the battery is empty, or your computer operates after the battery gauge shows that the battery is empty.
Solution : Discharge and recharge the internal battery.
• Problem : The operating time for a fully charged internal battery is short.
Solution : Discharge and recharge the internal battery. If your battery operating time is still short, use
a new internal battery.
• Problem : The computer does not operate with a fully charged internal battery.
Solution : The surge protector in the internal battery might be active. Turn off the computer for one minute
to reset the protector; then turn on the computer again.
• Problem : The internal battery cannot be charged.
Solution : You cannot charge the battery when it is too hot. If the internal battery temperature is too high,
turn off your computer and allow it to cool to room temperature. After it cools, recharge the battery. If it
still cannot be charged, have it serviced.
Power problems
Print these instructions now and keep it with your computer for reference later.
If your computer is getting no power at all, check the following items:
1. Verify the power button. Refer to “System status indicators” on page 7. The power button is lit
whenever the computer is on.
2. Check all power connections. Remove any power strips and surge protectors to connect the ac power
adapter directly to the ac power outlet.
3. Inspect the ac power adapter. Check for any physical damage, and make sure that the power cable is
firmly attached to the adapter brick and the computer.
4. Verify the ac power source is working by attaching another device to the outlet.
Chapter 9
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Troubleshooting computer problems
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