Toshiba Satellite U900 Maintenance Manual page 40

2 Troubleshooting Procedures
If the diagnostics program cannot detect an error, the problem may be intermittent. The test
program should be executed several times to isolate the problem. When a problem has been
located, perform the appropriate troubleshooting procedures as follows:
1. If an error is detected by the battery test, perform the Power Supply Troubleshooting
procedures in Section 2.3
2. If an error is detected by the display test, perform the Display Troubleshooting
procedures in Section 2.4
3. If an error is detected by the keyboard test, perform the Keyboard Troubleshooting
procedures in Section 2.5
4. If an error is detected by the Touchpad test, perform the Touchpad Troubleshooting
procedures in Section 2.7
5. If an error is detected by the audio test, perform the Speaker Troubleshooting
procedures in Section 2.8
6. If an error is detected when using the HDD/SSD/HDD+SSD(RAID mode), perform
the HDD/SDD/HDD+SSD(RAID mode) Troubleshooting procedures in Section 2.13
7. If an error is detected when using the LAN, perform the LAN troubleshooting
procedures in Section 2.18
8. If an error is defected when using the battery, perform the Battery troubleshooting
procedures in Section 2.19
9. If an error is defected when using LED function, perform the LED troubleshooting
procedures in Section 2.20
10. If an error is defected when using FAN ,perform the FAN troubleshooting procedures
in Section 2.21
Satellite U900/U940/U945 Series Maintenance Manual
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