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Troubleshooting Procedures
Satellite U300 and Satellite Pro U300 Maintenance Manual
37
Procedure 4
Replacement Check
Fluorescent lamp, FL inverter, LCD module, HV cable and LCD/FL cable are connected to
display circuits. Any of these components may be faulty. Refer to Chapter 4,
Replacement
Procedures,
for instructions on how to disassemble the computer and then perform the
following checks:
If fluorescent 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 operate properly, perform Check 4.
If fluorescent lamp remains lit when the display is closed, perform Check 5.
Check 1
Replace fluorescent lamp with a new one following the instructions in Chapter 4,
Replacement Procedures
and test the display again. If the problem still occurs,
perform Check 2.
Check 2
LCD/FL cable may be faulty. Replace FL/LCD cable with a new one following the
instructions in Chapter 4,
Replacement Procedure
and test the display again. If the
problem still occurs, perform Check 3.
Check 3
FL inverter may be faulty. Replace FL inverter with a new one following the
instructions in Chapter 4,
Replacement Procedure
and test the display again. If the
problem still occurs, perform Check 4.
Check 4
LCD module may be faulty. Replace LCD module with a new one following the
instructions in Chapter 4,
Replacement Procedure
and test the display again. If the
problem still occurs, perform Check 5.
Check 5
System board may be faulty. Replace it with a new one following the instructions
in Chapter 4,
Replacement Procedure
.
Summary of Contents for Satellite Pro U300
Page 13: ...Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 13 ...
Page 14: ...Chapter 1 Hardware Overview ...
Page 48: ...2 1 CONFIDENTIAL Chapter 2 Troubleshooting Procedures ...
Page 49: ...2 2 CONFIDENTIAL Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 2 ...
Page 118: ...Test Program for Field Satellite U300 and Satellite Pro U300 Tests and Diagnostics Manual 17 ...
Page 172: ...Replacement Procedures 4 iiSatellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 ...
Page 228: ...Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 App i Appendices ...
Page 229: ...App ii Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 ...
Page 239: ...Handling the LCD Module A 6 Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 ...
Page 285: ...Display codes D 2 Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 ...
Page 307: ...Wiring Diagrams F 2 Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 ...
Page 311: ...Reliability I 2 Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 ...
Page 313: ...Reliability I 2 Satellite U300 and Satellite Pro U300 Maintenance Manual 960 Q08 ...