Index of Symptom-to-FRU Error Message
LCD-Related Symptoms
Symptom / Error | Action in Sequence |
LCD backlight doesn't work | Enter BIOS Utility to execute “Load Setup Default |
LCD is too dark | Settings”, then reboot system. |
LCD brightness cannot be adjusted | Reconnect the LCD connectors |
LCD contrast cannot be adjusted | Keyboard (if contrast and brightness function key |
| doesn't work) |
| LCD inverter ID |
| LCD cable |
| LCD inverter |
| LCD |
| System board |
|
|
Unreadable LCD screen | Reconnect the LCD connector |
Missing pels in characters | LCD inverter ID |
Abnormal screen | LCD cable |
Wrong color displayed | LCD inverter |
| LCD |
| System board |
|
|
LCD has extra horizontal or vertical lines displayed | LCD inverter ID |
| LCD inverter |
| LCD cable |
| LCD |
| System board |
|
|
Indicator-Related Symptoms
Symptom / Error | Action in Sequence |
Indicator incorrectly remains off or on, but system | Reconnect the inverter board |
runs correctly | Inverter board |
| System board |
|
|
Chapter 4 | 81 |
