2.8 Display Troubleshooting
2 Troubleshooting Procedures
Procedure 4
Replacement Check
The FL, FL inverter board, LCD module, and system board 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 does not light, perform Check 1.
If characters or graphics are not displayed clearly, perform Check 4.
If some screen functions do not operate properly, perform Check 4.
If the FL remains lit when the display is closed, perform Check 5.
Check 1 Replace the FL with a new one following the instructions in Chapter 4,
Replacement Procedures
and test the display again. If the problem still exists,
perform Check2.
Check 2 The LCD/FL cable or HV cable may be defective or damaged. Replace the
FL/LCD or HV cable with a new one following the instructions in Chapter 4,
Replacement Procedure
and test the display again. If the problem still exists,
perform Check3.
Check 3 The FL inverter board 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 Check4.
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
.
Satellite A40 Maintenance Manual (960-458)
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Summary of Contents for Satellite A40 Series
Page 10: ...x Satellite A40 Maintenance Manual 960 458 ...
Page 11: ...Chapter 1 Hardware Overview ...
Page 12: ...1 Hardware Overview 1 ii Satellite A40 Maintenance Manual 960 458 ...
Page 51: ...Chapter 2 Troubleshooting Procedures ...
Page 52: ...2 Troubleshooting Procedures 2 ii Satellite A40 Maintenance Manual 960 458 ...
Page 56: ...2 Troubleshooting Procedures 2 vi Satellite A40 Maintenance Manual 960 458 ...
Page 118: ...Chapter 3 Tests and Diagnostics ...
Page 119: ...3 Tests and Diagnostics 3 ii Satellite A40 Maintenance Manual 960 458 ...
Page 204: ...Chapter 4 Replacement Procedures ...
Page 205: ...4 Replacement Procedures 4 ii Satellite A40 Maintenance Manual 960 458 ...
Page 358: ...Appendices ...
Page 359: ...Appendices App ii Satellite A40 Maintenance Manual 960 458 ...
Page 365: ...Appendices App viii Satellite A40 Maintenance Manual 960 458 ...
Page 371: ...Appendices Appendix A Handling the LCD Module A 6 Satellite A40 Maintenance Manual 960 458 ...
Page 411: ...Appendices Appendix E Key Layout E 4 Satellite A40 Maintenance Manual 960 458 ...
Page 413: ...Appendices Appendix F Wiring Diagrams F 2 Satellite A40 Maintenance Manual 960 458 ...
Page 415: ...Appendices Appendix G BIOS Rewrite Procedures G 2 Satellite A40 Maintenance Manual 960 458 ...
Page 417: ...Appendices Appendix H EC KBC Rewrite Procedures H 2 Satellite A40 Maintenance Manual 960 458 ...
Page 419: ...Appendices Appendix I Reliability I 2 Satellite A40 Maintenance Manual 960 458 ...