Beep symptoms, No-beep symptoms | Lenovo 2522K4U, 2518X01 manual

Beep symptoms

Table 4. Beep symptoms

Symptom or error	FRU or action, in sequence

One beep and a blank, unreadable, or flashing LCD.	1.	Reseat the LCD connector.
	2.	LCD assembly.
	3.	External CRT.
	4.	System board.

One long and two short beeps, and a blank or unreadable	1.	System board.
LCD.	2.	LCD assembly.
	3.	DIMM.

Two short beeps with error codes.	POST error. See “Numeric error codes” on page 61.

Two short beeps and a blank screen.	1.	System board.
	2.	DIMM.

Two or more beeps, or a continuous beep. Operating	If a mini-PCI Ethernet card is installed, confirm that Alert
system starts successfully.	On LAN 2 in BIOS Setup Utility is disabled.

Three short beeps, pause, three more short beeps, and	1.	DIMM.
one short beep.	2.	System board

One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep.

Only the cursor appears.	Reinstall the operating system.

Four cycles of four short beeps and a blank screen.	System board (security chip)

Five short beeps and a blank screen.	System board

Table 5. No-beep symptoms

Symptom or error	FRU or action, in sequence

No beep, power-on indicator on, LCD blank, and no	1.	Make sure that every connector is connected
POST.		tightly and correctly.
	2.	DIMM.
	3.	System board.

No beep, power-on indicator on, and LCD blank during	1.	Reseat DIMM.
POST.	2.	System board.
	2.	System board.

The power-on password prompt appears.	A power-on password or a supervisor password is set.
	Type the password and press Enter.

The hard-disk password prompt appears.	A hard-disk password is set. Type the password and
	press Enter.

Chapter 4. Related service information 67