2 Troubleshooting Procedures 2.9
Display
Troubleshooting
2-46
[CONFIDENTIAL]
QOSMIO G50 Maintenance Manual (960-683)
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
Fluorescent lamp may be faulty. 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 Qosmio G50 Series
Page 10: ...x CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 11: ... CONFIDENTIAL Chapter 1 Hardware Overview ...
Page 44: ...1 Hardware Overview 1 9 AC Adapter 1 30 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 45: ... CONFIDENTIAL Chapter 2 Troubleshooting Procedures ...
Page 46: ...2 Troubleshooting Procedures 2 ii CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 2 ...
Page 50: ...2 Troubleshooting Procedures 2 vi CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 121: ... CONFIDENTIAL Chapter 3 Tests and Diagnostics ...
Page 122: ...3 Tests and Diagnostics 3 ii CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 3 ...
Page 126: ...3 Tests and Diagnostics 3 vi CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 208: ...3 Tests and Diagnostics 3 31 SETUP 3 82 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 222: ...3 Tests and Diagnostics 3 31 SETUP 3 96 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 223: ... CONFIDENTIAL Chapter 4 Replacement Procedures ...
Page 224: ...4 Replacement Procedures 4 ii CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 4 ...
Page 230: ...4 Replacement Procedures 4 viii CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 351: ... CONFIDENTIAL Appendices ...
Page 352: ...Appendices App ii CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 438: ...Appendices Appendix E Key Layout E 2 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 440: ...Appendices Appendix F Wiring diagrams F 2 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...
Page 446: ...Appendices Appendix I Reliability I 2 CONFIDENTIAL QOSMIO G50 Maintenance Manual 960 683 ...