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LCD-related symptoms
Important
The | TFT | LCD | for |
| the | notebook | computer | contains |
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many | small | number | of | |||||||||||||||||
dots that are missing, discolored, or always l | ||||||||||||||||||||
characteristic | of TFT LCD technology, but exces | |||||||||||||||||||
pixel problems can cause viewing concerns. The L | ||||||||||||||||||||
should be replaced if the number of missing, | ||||||||||||||||||||
discolored, or | lighted | dots | in |
| any | background | ||||||||||||||
Ÿ | XGA | (13.3"): | 8 | or | more |
| bright | dots, 8 | or | mor | ||||||||||
| dark | dots, | or | a | total | of | 9 | or | more | bright | ||||||||||
| dots. |
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Symptom | or | error |
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| FRU | or | action, | in |
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No beep, | indicator1.System board |
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on, | and | a |
| blank | LCD | during |
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POST. |
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Ÿ | LCD |
| backlight | not |
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| 1. Reseat | the |
| LCD |
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| working. |
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| connectors. |
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Ÿ | LCD |
| too | dark. |
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| 2. | LCD assembly. |
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| 3. | System board. |
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Ÿ | LCD |
| brightness | cannot |
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| be | adjusted. |
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Ÿ | LCD |
| contrast | cannot |
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| be | adjusted. |
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Ÿ | LCD screen |
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| 1. See | important | note |
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| unreadable. |
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Ÿ | Characters missing |
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| symptoms.” |
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| pixels. |
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| 2. | Reseat |
| all LCD |
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Ÿ | Screen abnormal. |
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| connectors. |
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Ÿ | Wrong | color | displayed. | 3. | LCD assembly. |
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| 4. | System board. |
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Extra | horizontal | or |
| vertical1.LCD assembly |
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lines | are | displayed | on | the |
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LCD. |
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Symptom | or | error |
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| FRU | or | action, | in |
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In | OS/2, | DOS, | or | Windows | Check | that | the |
| device |
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multimedia | programs, |
| no |
| driver | is | installed |
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sound | comes | from | the |
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computer. | (Only system |
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beeps |
| are | heard | at |
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