Lenovo E73Z Post error codes, Beep symptom FRU/Action, Short and 1 long beeps Dram memory error

The following table describes the beep symptoms.

Beep symptom	FRU/Action
2 short beeps CMOS setting error	Common error code, see the detail failure information in
	“POST error codes” on page 60.
3 short and 1 long beeps DRAM memory error	Perform the following actions in order.
	1.	Make sure the memory module(s) are properly seated
		in the connector(s).
	2.	Replace the memory module(s).
	3.	Replace the system board.

POST error codes

Each time you power-on the system, it performs a series of tests that check the operation of the system and some options. This series of tests is called the Power-OnSelf-Test, or POST. POST does the following operations.

•Checks some basic system-board operations

•Checks the memory operation

•Starts the video operation

•Verifies that the boot drive is working

If the POST detects a problem, an error message appears on the screen. A single problem can cause several error messages to appear. When you correct the cause of the first error message, the other error messages probably will not appear on the screen the next time you turn on the system.

Error code	POST error message	Description/Action
0135	Fan failure	The system might be overheating.
		Press F10 to exit.
		Note: If the problem is caused by the
		microprocessor fan, press F10 will
		not solve the problem.
0211	Keyboard not found	When there is no keyboard detected,
		the error message will be displayed.
0164	Memory size decreased	Press F10 to exit.
1762	Configuration change has occurred	This error message is displayed when
		a hard disk drive or optical drive
		change has been made.
		Press F10 to exit.

60ThinkCentre E73z Hardware Maintenance Manual