Toshiba TOSHIBA NB100

2 Troubleshooting 2.3 Power Supply

Procedure 2 Connection Check

Power is supplied to the system board as illustrated below:

adaptor System board

AC power cord AC adaptor cord

Battery pack

Follow the steps below to check whether each connector has been connected correctly:

Check 1 Make sure the AC adaptor and AC power cord have been firmly plugged

into the DC IN socket and wall outlet, respectively. When they have been

connected correctly, perform Check 2.

Check 2 Connect a new AC adaptor and AC power cord.

• If the DC IN LED does not go on, go to Procedure 3.

• If the battery LED does not go on, perform Check 3.

Check 3 Make sure the battery pack has been correctly installed in the computer.

If the battery LED does not go on while the battery pack has been installed

correctly, go to Procedure 3.

Procedure 3 Replacement Check

The system board may be faulty. Disassemble the computer according to Chapter 4 and

follow the steps below:

Check 1 Replace the system board with a new one.

2-8 TOSHIBA NB100 Maintenance Manual