Procedure 5 Replacement Check; Replacement Check - Toshiba Satellite U400 Maintenance Manual

Procedure 5

Replacement Check

The power is supplied to the system board by the AC adapter. If either the AC adapter or the
system board was damaged, perform the following Checks.
To disassemble the computer, follow the steps described in Chapter 4, Replacement
Procedures.
When AC adapter is connected;
Check 1 AC adapter may be faulty. Replace the AC adapter with a new one. If the problem
still occurs, perform Check 2.
Check 2 System board may be faulty. Replace the system board with a new one.
When AC adapter is not connected ;
(When driving with battery pack)
Check 1 Battery pack may be faulty. Replace it with a new one. If the problem still occurs,
perform Check 2.
Check 2 System board may be faulty. Replace it with a new one.
2-12 Satellite U400/Satellite Pro U400/PORTEGE M800 Maintenance Manual
Chapter2 Troubleshooting Procedures