Toshiba PTA70, PTA71, PSAA9 manual Display Troubleshooting

2.7 Display 2 Troubleshooting

Check 3 The FL may be faulty. Replace it with a new one and return to Procedure 3. If there is still an error, perform Check 4.

Check 4 The FL inverter board may be faulty. Replace it with a new one and return to Procedure 3. If there is still an error, perform Check 5.

Check 5 Make sure the LCD/FL cable has been firmly connected to the system board and LCD module.

FL inverter board System board CPU

LCD/FL cable

If the cable is loose or off, reconnect it firmly and return to Procedure 3. If there is still an error, perform Check 6.

Check 6 The LCD/FL inverter cable may be faulty. Replace it with a new one and return to Procedure 3. If there is still an error, perform Check 7.

Check 7 The LCD module may be faulty. Replace it with a new one and return to Procedure 3. If there is still an error, perform Check 8.

Check 8 The System board may be faulty. Replace it with a new one. If there is still an error, perform Check 9.

Check 9 The CPU may be faulty. Replace it with a new one following the instructions in Chapter 4.

Check 10 The memory may be defective. Replace the memory module with a new one following the steps described in Chapter 4. If the problem persist, perform Check 10.

Satellite A100/A105 / TECRA A7 Maintenance Manual 2-19