Toshiba PORTEGE M400 - Manual (Page 63)

2.3 Power Supply Troubleshooting 2 Troubleshooting
PORTEGE M400 Maintenance Manual (960-541) [CONFIDENTIAL] 2-15
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.
Check 1 Replace the AC adapter with a new one. If power is not supplied properly to the
PC, perform Check 2.
Check 2 Replace the System board with a new one.