LCD Related Symptoms (2640)

LCD Related Symptoms

  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.
The LCD should be replaced if the number of missing or discolored, or lighted dots in any colored background is 21 or more.

See > LCD Pixel Policy Change
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 Email-NOTE  for any BUG on this page found - Thank you.