Important _________________________________  The TFT LCD for the notebook computer contains many thin-film transistors (TFTs). A small number of dots that are missing discolored or always lighted is characteristic of TFT LCD technology but excessive pixel problems can cause viewing concerns. The LCD should be replaced if the number of missing discolored or lighted dots in any background is:

v XGA: 8 or more bright dots 8 or more dark dots or a total of 9 or more bright and dark dots.

Note: A bright dot means a pixel is always on (white or color.) A dark dot means a pixel is always off (black color.)

Symptom or error

FRU or action in sequence

No beep power-on indicator

on and a blank LCD during

POST.

System board.

v

v

v

v

LCD backlight not working.

LCD too dark.

LCD brightness cannot be

adjusted.

LCD contrast cannot be

adjusted.

1.

2.

3.

Reseat the LCD

connectors.

LCD assembly.

System board.

v

v

v

v

LCD screen unreadable.

Characters missing pixels.

Screen abnormal.

Wrong color displayed.

1.

2.

3.

4.

See important note for

^“LCD-related symptoms.^”

Reseat all LCD connectors.

LCD assembly.

System board.