Toshiba PORTEGE M400 - Manual (Page 53)

2.2 Troubleshooting Flowchart 2 Troubleshooting
PORTEGE M400 Maintenance Manual (960-541) [CONFIDENTIAL] 2-5
If the diagnostics program cannot detect an error, the problem may occur intermittently. The
Test program should be executed several times to isolate the problem. Check the Log Utilities
function to confirm which diagnostic test detected an error(s), and perform the appropriate
troubleshooting procedures as follows:
1. If any trouble is detected on the System test, Memory test, ASYNC test, Real timer
test, NDP test or expansion test, perform the System board Troubleshooting
Procedures in Section 2.4.
2. If any trouble is detected on the Keyboard, perform the Keyboard Troubleshooting
Procedures in Section 2.7.
3. If any trouble is detected on the Display, perform the Display Troubleshooting
Procedures in Section 2.8.
4. If any trouble is detected on the Floppy disk, perform the USB FDD Troubleshooting
Procedures in Section 2.5.
5. If any trouble is detected on the Hard disk, perform the HDD Troubleshooting
Procedures in Section 2.6.
6. If any trouble is detected on the Touch pad, perform the Touch Pad Troubleshooting
Procedures in Section 2.9.
7. If any trouble is detected on the Selectable bay, perform the Selectable bay
Troubleshooting Procedures in Section 2.10.
8. If any trouble is detected on the modem test, perform the Modem Troubleshooting
Procedures in Section 2.11.
9. If any trouble is detected on the Bluetooth, perform the Bluetooth Troubleshooting
Procedures in Section 2.12.
10. If any trouble is detected on the LAN, perform the LAN Troubleshooting Procedures
in Section 2.13.
11. If any trouble is detected on the sound test, perform the Sound Troubleshooting
Procedures in Section 2.14.
12. If any trouble is detected on the Bridge media slot, perform the Bridge media Slot
Troubleshooting Procedures in Section 2.15.
13. If any trouble is detected on the Tablet pen, perform the Tablet Pen Troubleshooting
Procedures in Section 2.16.
14. If any trouble is detected on the Wireless LAN, perform the Wireless LAN
Troubleshooting Procedures in Section 2.17.
15. If any trouble is detected on the Fingerprint sensor, perform the Fingerprint sensor
Troubleshooting Procedures in Section 2.18.