Toshiba PSAGUX Manual Do Utilizador

Página de 263
2  Troubleshooting 
2.10Audio Test  
2.11 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. 
 
CPU
 
System board
Speaker
 
 
 
If the cable is loose or off, reconnect it firmly and return to Procedure 1.  If 
there is still an error, perform Check 2
 
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. 
 
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. 
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. 
 
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. 
2-22 
Satellite A300/Satellite Pro A300/EQUIUM A300/SATEGO A300   Maintenance Manual