Power System Checkout - Lenovo ThinkPad X60 Series Hardware Maintenance Manual

v PNPISA Info
v SMBIOS Info
v VESA LCD Info
v Hardware Events Log
Utility
v Run External Tests
v Surface Scan Hard Disk
v Benchmark System
v DOS Shell
v Tech Support Form
v Battery Rundown
v View Test Log
v Print Log
v Save Log
v Full Erase Hard Drive
v Quick Erase Hard Drive

Power system checkout

To verify a symptom, do the following:
1. Power off the computer.
2. Remove the battery pack.
3. Connect the ac adapter.
4. Check that power is supplied when you power on the computer.
5. Power off the computer.
6. Disconnect the ac adapter and install the charged battery pack.
7. Check that the battery pack supplies power when you power on the computer.
If you suspect a power problem, see the appropriate one of the following power
supply checkouts:
v "Checking the ac adapter"
v "Checking operational charging" on page 30
v "Checking the battery pack" on page 30
v "Checking the backup battery" on page 31
Checking the ac adapter
You are here because the computer fails only when the ac adapter is used:
v If the power problem occurs only when the port replicator is used, replace the
port replicator.
v If the power-on indicator does not turn on, check the power cord of the ac
adapter for correct continuity and installation.
v If the computer does not charge during operation, go to "Checking operational
charging."
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:
Checkout guide
29
General descriptions