Technical information

140 Chapter 4

Power On Issue

If the system doesn’t power on, perform the following actions one at a time to correct the problem. Do not

replace a non-defective FRUs:

Computer Shuts Down Intermittently

If the system powers off at intervals, perform the following actions one at a time to correct the problem.

1. Check the power cable is properly connected to the computer and the electrical outlet.

2. Remove any extension cables between the computer and the outlet.

3. Remove any surge protectors between the computer and the electrical outlet. Plug the computer directly

into a known good electrical outlet.

4. Remove all external and non-essential hardware connected to the computer that are not necessary to

boot the computer to the failure point.

5. Remove any recently installed software.

6. If the Issue is still not resolved, see “Online Support Information” on page 193.

START

Check AC/Batt

only power on

Check Power/B

Replace

Mainboard

Swap AC/

Battery

Swap Power/B