2 Troubleshooting

2.3 Power Supply

Procedure 2 Connection Check

Power is supplied to the system board as illustrated below:

 

 

 

 

 

AC

 

 

 

System board

 

 

 

 

 

 

 

adaptor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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, power supply board, or CPU may be faulty. Disassemble the computer according to Chapter 4 and follow the steps below:

Check 1 Replace the power supply board with a new one. If the battery pack is still not working properly, perform Check 2.

Check 2 Replace the system board with a new one. If the battery pack is still not working properly, perform Check 3.

Check 3 Replace the CPU with a new one.

2-8

Satellite E100/E105 Maintenance Manual

Page 46
Image 46
Toshiba SATELLITE E105 manual Procedure 2 Connection Check, Procedure 3 Replacement Check