IBM 1400 (2611) manual Lcd

	LCD	FRU Replacement		Notice
The TFT		LCD	for	the notebook	computer		contains
over 2,359,296 thin-film transistors (TFTs). A small
number		of	missing, discolored,		or	lighted dots		(on
the time) is characteristic of TFT LCD technology,
excessive			pixel	problems can	cause		viewing concerns
The LCD should be replaced if the number of miss
discolored,			or	lighted dots	in	any	background	is:

ŸSVGA (12.1"): 5 or more bright dots, 5 or more

dark dots, or a total of 9 or more bright an dots

ŸXGA (14.1"): 8 or more bright dots, 8 or more

dark	dots,	or	a	total		of 9		or	more bright an
dots
Symptom/Error		FRU/Action in			Sequence
No beep, power-on		Ÿ	Power source (battery and
indicator	turns on	and		adapter).			See	“Power
LCD is blank.				Systems		Check”		on
				page	111.
		Ÿ		Reconnect			the	LCD	connector
		Ÿ		DC/DC charger
		Ÿ		Hard	disk		drive

Ÿ LCD inverter ID

ŸLCD LVDS board (for 14.1–inch LCD)

Ÿ LCD FPC cable

ŸInverter

ŸLCD

ŸSystem board

LCD	backlight doesn't Ÿ				Enter BIOS			Utility		and
work.					execute		"Load		Setup	Default
LCD	is	too	dark.		Settings";		then		reboot		the
					system.
LCD	brightness
cannot		be	adjusted. Ÿ		Reconnect the LCD connec-
LCD	contrast		cannot		tors
				Ÿ	Keyboard		(if		contrast		and
be	adjusted.
					brightness			function keys do
					not	work)
				Ÿ	LCD	inverter		ID

ŸLCD LVDS board (for 14.1–inch LCD)

Ÿ LCD FPC cable

ŸLCD inverter

ŸLCD

ŸSystem board

126 ThinkPad i Series 1400 HMM