Ch4. Symptom-to-part index
LCD-related symptoms
Note
Before removing or disassembling LCD, power off the computer, unplug all power cords from electrical outlets, remove the battery pack also.
Symptom / Error |
| FRU or action, in sequence |
|
| |
LCD screen becomes dark suddenly. | Check out Battery Miser. | |
|
|
|
Nothing displayed on LCD screen. | 1. | Check out Battery Miser. |
| 2. | Choose Never in the Turn off Monitor item on |
|
| Power Options Properties. |
| 3. | Check the power save mode switch if it is pressed |
|
| by something. |
| 4. | Check the System is in standby or hibernation |
|
| mode. |
|
|
|
LCD backlight not working. | 1. | Reconnect inverter to the board connector. |
LCD too dark. | 2. | Replace inverter. |
LCD brightness cannot be adjusted. | 3. | LCD assembly. |
| 4. | System board. |
|
|
|
LCD color cannot be adjusted. | 1. | Reset all LCD connectors. |
LCD screen abnormal. | 2. | Replace LCD cable. |
Characters missing pixels. | 3. | LCD assembly. |
LCD screen unreadable. | 4. | System board. |
Wrong color displayed. |
|
|
|
| |
Horizontal or vertical lines displayed | LCD assembly. | |
on LCD |
|
|
|
| |
LCD assembly. | ||
during POST. | System board. | |
|
|
|
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