Power System Checkout; Checking The Ac Adapter - Lenovo ThinkPad T410i Hardware Maintenance Manual

• If you have created the bootable diagnostic medium on a USB device, do the following:
1. Attach the USB device to the computer.
2. Turn on the computer. If the computer cannot be turned on, go to "Power system checkout" on page
36, and check the power sources. If an error code is displayed, go to "Symptom-to-FRU index" on
page 43 for error code descriptions and troubleshooting hints.
3. When the ThinkPad logo is displayed, repeatedly press and release the F12 key. When the Boot
Menu window opens, release the F12 key.
4. Use the arrow keys to select USB HDD and then press Enter. The diagnostic program will be
launched automatically.
5. Follow the instructions on the screen to use the diagnostic program.
• If you have created the bootable diagnostic medium on a CD, do the following:
1. Turn on the computer. If the computer cannot be turned on, go to "Power system checkout" on page
36, and check the power sources. If an error code is displayed, go to "Symptom-to-FRU index" on
page 43 for error code descriptions and troubleshooting hints.
2. Insert the CD into the optical drive.
3. Restart the computer.
4. When the ThinkPad logo is displayed, repeatedly press and release the F12 key. When the Boot
Menu window opens, release the F12 key.
5. Use the arrow keys to select ATAPI CDx (x: 0, 1, ...) and then press Enter. The diagnostic program
will be launched automatically.
6. Follow the instructions on the screen to use the diagnostic program.

Power system checkout

To verify a symptom, do the following:
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 36
• "Checking operational charging" on page 37
• "Checking the battery pack" on page 37
• "Checking the backup battery" on page 38

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 37.
To check the AC adapter, do the following:
1. Unplug the AC adapter cable from the computer.
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Hardware Maintenance Manual