2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures
2-6 PORTEGE M300 Maintenance Manual (960-504)
If the diagnostics program cannot detect an error, the problem may be intermittent. The
Running Test program should be executed several times to isolate the problem. Check the
Log Utilities function to confirm which diagnostic test detected an error, then perform the
appropriate troubleshooting procedures as follows:
1. If an error is detected on the System Test, Memory Test, Real Timer Test, perform
the System Board and Processor Module Troubleshooting Procedures in Section 2.4.
2. If an error is detected on the floppy disk test, perform the USB FDD Troubleshooting
Procedures in Section 2.5.
3. If an error is detected on the hard disk test, perform the HDD Troubleshooting
Procedures in Section 2.6.
4. If an error is detected on the Pressed key display test (in Only One Test) and Pressed
key code Display test (in DIAGNOSTIC test), perform the Keyboard Troubleshooting
Procedures in Section 2.7.
5. If an error is detected on the Touch pad test (in Only One Test), perform the Touch
pad Troubleshooting Procedures in Section 2.8.
6. If an error is detected on the display test, perform the Display Troubleshooting
Procedures in Section 2.9.
7. If an error is detected on the CD-ROM/DVD-ROM test, perform the Optical drive
Troubleshooting Procedures in Section 2.10.
8. If an error is detected on the modem test (in LAN/Modem/Bluetooth/IEEE1394 test
disk), perform the Modem Troubleshooting Procedures in Section 2.11.
9. If an error is detected on the LAN test (in LAN/Modem/Bluetooth/IEEE1394 test
disk), perform the LAN Troubleshooting Procedures in Section 2.12.
10. If an error is detected on the Wireless LAN test (in Wireless LAN test disk), perform
the Wireless LAN Troubleshooting Procedures in Section 2.13.
11. If an error is detected on the Bluetooth test (in LAN/Modem/Bluetooth/IEEE1394 test
disk), perform the Bluetooth Troubleshooting Procedures in Section 2.14.
12. If an error is detected on the sound test (in Sound test disk), perform the Sound
Troubleshooting Procedures in Section 2.15.