CHAPTER 4: Troubleshooting
60
Memory Check
Memory errors might stop system operations, show error messages on the
screen, or hang the system.
To test the memory:
1 Boot from the diagnostics diskette and start the diagnostics program.
(please refer to main board)
2 Go to the diagnostic memory in the test items.
3 Press F2 in the test items.
4 Follow the instructions in the message window.
Power System Check
To verify the symptom of the problem, power on the computer using each
of the following power sources:
• Remove the battery pack.
• Connect the power adapter and check that power is supplied.
• Disconnect the power adapter and install the charged battery pack;
then check that power is supplied by the battery pack.
If you suspect a power problem, see the appropriate power supply check in
the following list:
• “Check the Power Adapter” on page 60
• “Check the Battery Pack” on page 61
Check the Power Adapter
Unplug the power adapter cable from the notebook and measure the output
voltage at the plug of the power. See the following figure.
Important
Make sure that the DIMM is fully installed into the connector. A
loose connection can cause an error.
Pin 1: +19 to +20.5V
Pin 2: 0V, Ground
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