Toshiba Satellite L630-BT2N22 Maintenance Manual - Page 59

2 Troubleshooting 2.10Audio Test 2.10 Audio Test To check if the computer's Speaker is defective or malfunctioning, follow the troubleshooting procedures below as instructed. Procedure 1 Test Program Check Procedure 2 Connector Check and Replacement Check Procedure 1 Test Program Check Execute the Audio test available as part of the maintenance test program. See Chapter 3 for information on how to perform the test. If an error is detected in the test, go to Procedure 2. If no error is detected, the Audio itself is normal. Procedure 2 Connector Check and Replacement Check The Audio or system board may be disconnected or faulty. Disassemble the computer following the steps described in Chapter 4 and perform the following checks: Check 1 Make sure the Speaker cable has been firmly connected to the system board. Speaker System board CPU Check 2 Check 3 Check 4 Check 5 If the cable is loose or off, reconnect it firmly and return to Procedure 1. If there is still an error, perform Check 2. The Speaker may be faulty. Replace it with a new one following the instructions in Chapter 4. If the problem persists, perform Check 3. The System board may be faulty. Replace it with a new one following the instructions in Chapter 4. If the Audio is still not functioning properly, perform Check 4. 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 5. The CPU may be faulty. Disassemble the computer following the steps described in Chapter 4 and replace the CPU with a new one. Satellite/Satellite Pro/L630/L635 Maintenance Manual 2-20