Toshiba Satellite L650 Maintenance Manual page 44

2.2 Basic Flowchart
If the diagnostic program cannot detect an error, the error may be intermittent. Run the
continuous test program repeatedly to isolate the problem. Check the log utilities function to
confirm which diagnostic test detected the error, then perform the appropriate
troubleshooting procedures as follows:
1. If an error is detected by the System test, Memory test, Async test, Printer test, Sound
test, or Real Timer test, follow the system board troubleshooting procedures in
Section 2.4.
2. If an error is detected by the Hard Disk test, follow the HDD troubleshooting
procedures in Section 2.5.
3. If an error is detected by the SSD test, follow the SSD troubleshooting procedures in
Section 2.6.
4. If an error is detected by the Keyboard test, follow the keyboard troubleshooting
procedures in Section 2.7.
5. If an error is detected by the Display test, follow the display troubleshooting
procedures in Section 2.8.
6. If an error is detected by the ODD test, follow the ODD troubleshooting procedures in
Section 2.9.
7. If an error is detected by the LAN test, follow the LAN troubleshooting procedures in
section 2.10.
8. If an error is detected by the Speaker test, follow the Speaker troubleshooting
procedures in section 2.11.
9. If an error is detected by the Fan On/Off test, follow the cooling module
troubleshooting procedures in Section 2.12.
Satellite/Satellite Pro/L650/L655 Maintenance Manual
2 Troubleshooting
2-5