Toshiba Satellite U500 Maintenance Manual page 54

2 Troubleshooting Procedures
Procedure 5 Replacement Check
The main board processor module may be disconnected or damaged. Disassemble the
computer following the steps described in Chapter 4, Replacement Procedures. Check the
connection between the AC adaptor and main board and connection. After checking the
connections, perform the following Check 1:
Check 1 Replace the AC adaptor with a new one. If the AC adaptor is still not functioning
properly, perform Check 2.
Check 2 Replace the main board with a new one following the steps described in Chapter
4, Replacement Procedures.
2-18 [CONFIDENTIAL] Satellite M500D/M505D/M507D Maintenance Manual