IBM MT 9448 LCD resolution Bright dots Dark dots Bright and dark dots, Reseat the LCD connectors

Symptom-to-FRU index

LCD resolution	Bright dots	Dark dots	Bright and dark dots
XGA, WXGA	5	6	6
WXGA+, SXGA+,	5	8	10
WSXGA+
UXGA, WUXGA,	5	13	13
QXGA

Notes:

1.Lenovo will not provide replacement if the LCD is within specification as we cannot guarantee that any replacement LCD will have zero pixel defects.

2.A bright dot means a pixel is always on (white or color.)

3.A dark dot means a pixel is always off (black color.)

4.One pixel consists of R, G, B sub-pixels.

Symptom or error		FRU or action, in sequence
No beep, power-on indicator on, and a		System board.
blank LCD during POST.
v LCD backlight not working.		1.	Reseat the LCD connectors.
v	LCD too dark.	2.	LCD assembly.
v LCD brightness cannot be adjusted.		3.	System board.
v LCD contrast cannot be adjusted.
v	LCD screen unreadable.	1.	See important note for “LCD-related
v	Characters missing pixels.		symptoms.”
v	Screen abnormal.	2.	Reseat all LCD connectors.
v	Wrong color displayed.	3.	LCD assembly.
		4.	System board.
Horizontal or vertical lines displayed on		LCD assembly.
LCD.

50MT 8747, 8749, 9440, 9441, 9442, 9443, and 9448