Toshiba A500D/PRO A500DPRO A500D Benutzerhandbuch

 

                                                                                                            

Satellite A500D/Satellite A505D/Satellite A507D/Satellite Pro Series Maintenance Manual

18

 

Connect a USB keyboard to one of the computer’s USB ports, and then boot the computer. 
The computer automatically detects the external keyboard. 

If the external keyboard works correctly, the internal keyboard or its connections may be 
faulty.  Go to Procedure 2. 

If the external keyboard appears to have the same problem as the internal keyboard, the 
system board may be having some problem.  Replace it with a new one and following the 
instructions in Chapter 4. 

Run the 

test and Diagnostics

 Program, which will automatically execute the Keyboard Test.  

Refer to Chapter 3, 

Tests and Diagnostics 

for more information on how to run the program. 

If an error is located, go to Procedure 3.  If an error does not occur, the keyboard is 
functioning ok. 

The keyboard and/or system board may be disconnected or damaged.  Disassemble the 
computer following the steps described in Chapter 4, Replacement Procedures and perform 
the following checks. 

Check 1 

Make sure the keyboard cable is firmly connected to the system board.  

If the connection is loose, reconnect firmly and repeat Procedure 2. If there is still 
an error, go to Check 2. 

Check 2 

The keyboard may be damaged. Replace it with a new one following the 
instructions in Chapter 4. 

If the problem still exists, perform Check 3. 

Check 3 

The system board may be damaged.  Replace it with a new one following the 
instructions in Chapter 4.