Toshiba Satellite L20 Series Maintenance Manual page 65

2 Troubleshooting
Procedure 2 Test Program Check
The maintenance test program contains several programs for diagnosing the system board
and CPU. Execute the following test programs using the procedures described in Chapter 3.
1. System test
2. Memory test
3. Keyboard test
4. Display test
5. Hard Disk test
6. Mouse test
7. ODD test
8. Sound test
9. LAN test
If an error is detected during these tests, go to Procedure 3.
Procedure 3 Replacement Check
The system board, memory, or CPU may be defective. Disassemble the computer following
the steps described in Chapter 4 and replace the system board, memory module or CPU with
a new one.
2-10 EQUIUM M40/M45/Satellite M40/M45 Maintenance Manual
2.4 System Board