Toshiba A105 S4064 Maintenance Manual - Page 71

2 Troubleshooting 2.15IEEE 1394 Test 2.15 IEEE 1394 Test To check if the computer's IEEE 1394 is defective or malfunctioning, follow the troubleshooting procedures below as instructed. Procedure 1 Test Program Check Procedure 2 Connector Check Procedure 1 Test Program Check Execute the IEEE 1394 test program available as part of the maintenance test program. This program checks the IEEE 1394. Insert the Bootable CD into the CD. Turn on the computer and run the test. See Chapter 3 for information on how to perform the test. If any error is detected by the test, go to Procedure 2 Procedure 2 Connector Check The IEEE 1394 connector is mounted on the system board. If the IEEE 1394 malfunctions, the system board or CPU might be faulty. Disassemble the computer following the steps described in Chapter 4 and perform the following checks: Check 1 The system board may be faulty. Replace it with a new one following the instructions in Chapter 4. If the IEEE 1394 is still not functioning properly, perform Check 2. Check 2 The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform Check 3. Check 3 The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one. 2-28 Satellite A100/A105 / TECRA A7 Maintenance Manual