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The TFT LCD of the notebook computers
contain over 921.000 thin film
transistors (TFTs). A small number of missing, discolored or lighted
dots (on all the time) is characteristic of TFT LCD technology.
Excessive pixel problems can cause viewing concerns.
| Symptom/Error | FRU / Action in Sequence |
|---|---|
| Flicker | 1. Do not replace any FRUs. |
| In certain brightness/contrast settings, | |
| screen flicker can be seen because of | |
| technical limitations. | |
| No beep, power-on indicator on, | 1. DC/DC card if 2640-560x - (60x, 70x) |
| and a blank LCD during POST. | 2. System Board |
| ° LCD backlight not working, or | 1. Reseat the LCD connector. |
| ° LCD too dark, or | 2. LCD Assembly |
| ° LCD brightness cannot be adjusted, or | |
| ° LCD contrast cannot be adjusted. | |
| ° LCD screen unreadable, or | 1. See important (above) note for |
| ° Characters missing pels, or | LCD Related Symptoms. |
| ° Screen abnormal, or | 2. Reseat all LCD connectors |
| ° Wrong color displayed. | 3. LCD Assembly |
| 4. System Board | |
| LCD has extra horizontal or | 1. LCD Assembly |
| vertical lines displayed. |
Please see the LEGAL - Trademark notice.
Feel free - send a 
for any BUG on this page found - Thank you.