Toshiba PROA500 Manual Do Utilizador

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2 Troubleshooting Procedures 
         
Satellite L500 / Pro L500 Series Maintenance Manual         
15
 
This section describes how to determine if the computer’s display is functioning properly.  
The process is outlined in Figure 2-3. Start with Procedure 1 and continue with the other 
procedures as instructed. 
Procedure 1:  External display check 
Procedure 2:  Diagnostic check 
Procedure 3:  Connector and replacement check 
 
Procedure 1 
External display check 
Connect an external display to the computer’s external monitor port, and then boot the 
computer.  The computer automatically detects the external display.  
If the external display works correctly, the internal LCD may be damaged. Go to Procedure 3. 
If the external monitor appears to have the same problem as the internal monitor, the system 
board may be damaged.  Go to Procedure 2. 
 
Procedure 2 
Diagnostic check 
The Display Test program is stored on the computer’s Diagnostics disk.  This program checks 
the display controller on the system board.  Insert the Diagnostics disk in the computer’s 
floppy disk drive, turn on the computer and run the test.  Refer to Chapter 3, Tests and 
Diagnostics
 for details. 
If an error is detected, go to Procedure 3.  If an error is not detected, the display is functioning 
properly.