Toshiba PORTEGE A200 series Maintenance Manual page 79

2 Troubleshooting Procedures
If the connection is loose, reconnect firmly and restart the computer. If there is still an error,
go to Procedure 4.
Procedure 4 Replacement Check
Units related to display are a FL inverter board, Display module, System board and LCD/FL
cable. Any of the components may be damaged. Disassemble the computer following the steps
described in Chapter 4, Replacement Procedures, then perform the following checks:
(1) If the FL does not light, perform Check 1.
(2) If characters are displayed on the internal display but the display is not normal, perform
Check 3.
(3) If the FL lights even if the display cover is closed, perform Check 4.
Check 1 The LCD/FL cable may be damaged. Replace the cable with a new one. If there is
still an error, go to Check 2.
Check 2 The FL inverter board may be damaged. Replace it with a new one and repeat
Procedure 1. If there is still an error, go to Check 3.
Check 3 The LCD module may be damaged. Replace it with a new one and repeat
Procedure 1. If there is still an error, go to Check 4.
Check 4 The system board may be damaged. Replace the system board with a new one.
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2.8 Display Troubleshooting
PORTEGE A200 Maintenance Manual (960-499)