Lenovo MT 2506, MT 1867, MT 1866, MT 1869 manual Beep symptoms

		Symptom-to-FRU index
Beep symptoms
Symptom or error	FRU or action, in sequence
One beep and a blank,	1.	Reseat the LCD
unreadable, or flashing LCD.		connector.
	2.	LCD assembly.
	3.	External CRT.
	4.	System board.
One long and two short beeps,	1.	System board.
and a blank or unreadable	2.	LCD assembly.
LCD.	3.	DIMM.
Two short beeps with error	POST error. See “Numeric
codes.	error codes” on page 55.
Two short beeps and a blank	1.	System board.
screen.	2.	DIMM.
Three short beeps, pause,	1.	DIMM.
three more short beeps, and	2.	System board
one short beep.
One short beep, pause, three
short beeps, pause, three more
short beeps, and one short
beep.
Only cursor appears.	Reinstall operating system.
Four cycles of four short beeps	System board (security chip)
and a blank screen.
Five short beeps and a blank	System board
screen.
No-beep symptoms
Symptom or error	FRU or action, in sequence
No beep, power-on indicator	1.	Make sure that every
on, LCD blank, and no POST.		connector is connected
		tightly and correctly.
	2.	DIMM.
	3.	System board.
No beep, power-on indicator	1.	Reseat DIMM.
on, and LCD blank during	2.	System board.
POST.
The power-on password prompt	A power-on password or a
appears.	supervisor password is set.
	Type the password and press
	Enter.
The hard-disk password prompt	A hard-disk password is set.
appears.	Type the password and press
	Enter.
The DOS full screen looks	Start the ThinkPad
smaller than it should.	Configuration program and set
	the Screen expansion
	function.

ThinkPad X41 Tablet 65