LCD-related Symptoms (TP 570

^{IBM-AUSTRIA - PC-HW-Support 30 Aug 1999}

LCD-related Symptoms (TP 570 - 2644)

LCD-related Symptoms

-Important- The TFT LCD for the notebook computer contains over 2,359,000 thin-film transistors (TFTs).
A small number of missing, discolored, or lighted dots (on all the time) 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 8 or more.

Symptom / error FRU / action in sequence

No beep, power-on indicator 1. System board

on, and a blank LCD during POST.
° LCD backlight not working. 1. Reseat the LCD connectors.

° LCD too dark. 2. LCD assembly

° LCD brightness cannot 3. System board

be adjusted.
° LCD contrast cannot
be adjusted.
° LCD screen unreadable. 1. See (above) important note for 'LCD-related symptoms.'

° Characters missing pels. 2. Reseat all LCD connectors.

° Screen abnormal. 3. LCD assembly

° Wrong color displayed. 4. System board

LCD has extra horizontal 1. LCD assembly

or vertical lines displayed.

Symptom / error	FRU / action in sequence

No beep, power-on indicator	1. System board
on, and a blank LCD during POST.
° LCD backlight not working.	1. Reseat the LCD connectors.
° LCD too dark.	2. LCD assembly
° LCD brightness cannot	3. System board
be adjusted.
° LCD contrast cannot
be adjusted.
° LCD screen unreadable.	1. See (above) important note for 'LCD-related symptoms.'
° Characters missing pels.	2. Reseat all LCD connectors.
° Screen abnormal.	3. LCD assembly
° Wrong color displayed.	4. System board

LCD has extra horizontal	1. LCD assembly
or vertical lines displayed.

More INFORMATION / HELP is available at the IBM-HelpCenter

Please see the LEGAL - Trademark notice.
Feel free - send a for any BUG on this page found - Thank you.