Procedure 2 Diagnostic Test Program Execution Check; Procedure 3 Replacement Check - Toshiba Satellite L640D Maintenance Manual

Chapter 2 Troubleshooting Procedures
Procedure 2 Diagnostic Test Program Execution Check
Execute the following tests from the Diagnostic Test Menu. These tests check the system
board. Refer to Chapter 3, Tests and Diagnostic, for more information on how to perform
these tests.
1. System test
2. Memory test
3. Keyboard test
4. Display test
5. Hard Disk test
6. CPU Temperature test
7. Main Battery test
8. BIOS test
9. CD-ROM/DVD-ROM test
10. System Status LED test
11. Wireless LAN test
12. LAN/Modem/Sound test
13. UUID test-DMI Information (Write DMI)
If an error is detected during these tests, go to Procedure 4.
Procedure 3 Replacement Check
System board may be faulty. Disassemble the computer following the steps described in
Chapter 4, Replacement Procedures and replace system board with a new one.
Satellite L600D/L640D/L645D, Satellite Pro L600D/Pro L640D/Pro L645D Maintenance Manual (960-Q08)