Toshiba 960-498 用户手册

The FL lamp, FL inverter, LCD module, system board and LCD/FL cable are connected to 
display circuits. Any of these components may be damaged. Refer to Chapter 4, Replacement 
Procedures, for instructions on how to disassemble the computer and then perform the 
following checks: 

If the FL lamp does not light, perform Check 1. 

If characters or graphics on the internal display are not displayed clearly, perform 
Check 4. 

If some screen functions do not work properly, perform Check 4. 

If the FL lamp remains lit when the display is closed, perform Check 5. 

Check 1  Replace the FL lamp with a new one following the instructions in Chapter 4, 

Replacement Procedures and test the display again. If the problem still exists, 
perform Check 2. 

Check 2  The LCD/FL cable may be defective or damaged. Replace the FL/LCD cable with 

a new one following the instructions in Chapter 4, Replacement Procedure and test 
the display again. If the problem still exists, perform Check 3. 

Check 3  The FL inverter may be defective or damaged. Replace the FL inverter board with 

a new one following the instructions in Chapter 4, Replacement Procedure and test 
the display again. If the problem still exists, perform Check 4. 

Check 4  The LCD module may be defective or damaged. Replace the LCD module with a 

new one following the instructions in Chapter 4, Replacement Procedure and test 
the display again.  If the problem still exists, perform Check 5. 

Check 5  The system board may be defective or damaged. Replace it with a new one 

following the instructions in Chapter 4, Replacement Procedure.