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1. Turn off the computer.
2. Remove the battery pack.
3. Connect the ac adapter.
4. Check that power is supplied when you turn on the computer.
5. Turn off the computer.
6. Disconnect the ac adapter and install the charged battery pack.
7. Check that the battery pack supplies power when you turn on the computer.
If you suspect a power problem, see the appropriate one of the following power supply checkouts:
•
“Checking the ac adapter” on page 29
•
“Checking operational charging” on page 29
•
“Checking the battery pack” on page 30
•
“Checking the backup battery” on page 30
Checking the ac adapter
You are here because the computer fails only when the ac adapter is used.
• If the power problem occurs only when the docking station or the port replicator is used, replace the
docking station or the port replicator.
• If the power-on indicator does not turn on, check the power cord of the ac adapter for correct continuity
and installation.
• If the computer does not charge during operation, go to “Checking operational charging” on page 29.
To check the ac adapter, do the following:
1. Unplug the ac adapter cable from the computer.
2. Measure the output voltage at the plug of the ac adapter cable. See the following figure:
Pin
Voltage (V dc)
1
+20
2
0
3
Ground
Note:
Output voltage of pin no.2 of the ac adapter may different from the one you are servicing.
3. If the voltage is not correct, replace the ac adapter.
4. If the voltage is acceptable, do the following:
• Replace the system board.
• If the problem persists, go to “FRU tests” on page 27.
Note:
Noise from the ac adapter does not always indicate a defect.
Checking operational charging
To check whether the battery charges properly during operation, use a discharged battery pack or a battery
pack that has less than 50% of the total power remaining when installed in the computer.
Chapter 3
.
General checkout
29
Summary of Contents for X100e
Page 1: ...Hardware Maintenance Manual ThinkPad X100e and X120e...
Page 6: ...iv Hardware Maintenance Manual...
Page 11: ...DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information 5...
Page 12: ...DANGER 6 Hardware Maintenance Manual...
Page 13: ...PERIGO PERIGO PERIGO Chapter 1 Safety information 7...
Page 14: ...PERIGO PERIGO PERIGO PERIGO PERIGO DANGER 8 Hardware Maintenance Manual...
Page 15: ...DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information 9...
Page 16: ...DANGER DANGER VORSICHT VORSICHT VORSICHT 10 Hardware Maintenance Manual...
Page 17: ...VORSICHT VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information 11...
Page 18: ...12 Hardware Maintenance Manual...
Page 19: ...Chapter 1 Safety information 13...
Page 20: ...14 Hardware Maintenance Manual...
Page 21: ...Chapter 1 Safety information 15...
Page 22: ...16 Hardware Maintenance Manual...
Page 23: ...Chapter 1 Safety information 17...
Page 24: ...18 Hardware Maintenance Manual...
Page 28: ...22 Hardware Maintenance Manual...
Page 38: ...32 Hardware Maintenance Manual...
Page 54: ...48 Hardware Maintenance Manual...
Page 72: ...Table 16 Removal steps of keyboard continued 2 3 66 Hardware Maintenance Manual...
Page 100: ...Overall 1 2 1 3 4 5 6 8 9 10 19 20 21 18 17 16 15 14 13 12 11 7 94 Hardware Maintenance Manual...
Page 115: ...LCD FRUs 1 4 3 2 5 7 6 Chapter 10 Parts list 109...
Page 133: ......
Page 134: ...Part Number 63Y0640_04 Printed in 1P P N 63Y0640_04 63Y0640_04...