Toshiba A1 사용자 설명서

The display unit has an FL inverter board, Display module, System board, LCD harness and 
Display ON/OFF switch. Any of the components may be damaged. Disassemble the computer 
following the steps described in Chapter 4, Replacement Procedures､ then perform the 
following checks: 

If characters or graphics are not displayed on the internal display, perform Check 1. 

If characters are displayed on the internal display but the display is not normal, perform Check 
2. 

If characters are displayed on the internal display but the display is dark (the back-light does 
not light), perform Check 5. 

Check 1  The display ON/OFF switch may be damaged. Remove the display ON/OFF 

switch and repeat Procedure 4. If there is still an error, go to Check 2. 

Check 2  The LCD harness may be damaged. Replace the damaged harness with a new one 

and repeat Procedure 4. If there is still an error, go to Check 3. 

Check 3  The display module may be damaged. Replace it with a new one and repeat 

Procedure 4. If there is still an error, go to Check 4. 

Check 4  The FL inverter board may be damaged. Replace it with a new one and repeat 

Procedure 4. If there is still an error, go to Check 5. 

Check 5  The FL tube may be damaged. Replace it with a new one and repeat Procedure 4. 

If there is still an error, go to Check 6. 

Check 6  The display controller of the system board may be damaged. Replace the system 

board with a new one.