Lenovo TD100X manual POST beep codes, ThinkServer TD100 and TD100x Hardware Maintenance Manual

POST beep codes

A beep code is a combination of short or long beeps or series of short beeps that are separated by pauses. For example, a “1-2-3” beep code is one short beep, a pause, two short beeps, and pause, and three short beeps. A beep code indicates that POST has detected a problem. If no beep code sounds, see “No-beep symptoms” on page 152.

The following table describes the beep codes and suggested actions to correct the detected problems.

A single problem might cause more than one error message. When this occurs, correct the cause of the first error message. The other error messages usually will not occur the next time POST runs.

Exception: If there are multiple error codes that indicate a microprocessor error, the error might be in a microprocessor or in a microprocessor socket. See “Microprocessor problems” on page 178 for information about diagnosing microprocessor problems.

vFollow the suggested actions in the order in which they are listed in the Action column until the problem is solved.

vSee Chapter 3, “Parts listing, TD100 Types 6398, 6399, 6419, 6429, 4203, and 4206,” on page 25 to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU).

vIf an action step is preceded by “(Trained service technician only),” that step must be performed only by a trained service technician.

Beep code	Description	Action
1-1-3	CMOS write/read test failed.	1.	Reseat the battery.
		2.	Clear CMOS memory. See “System-board
			switches” on page 14 for information about
			how to clear CMOS.
		3.	Replace the following components one at a
			time, in the order shown, restarting the
			server each time:
			a. Battery
			b. (Trained service technician only) System
			board
1-1-4	BIOS ROM checksum failed.	1.	Recover the BIOS code.
		2.	(Trained service technician only) Replace
			the system board.
1-2-1	Programmable interval timer failed.	(Trained service technician only) Replace the
		system board.
1-2-2	DMA initialization failed.	(Trained service technician only) Replace the
		system board.
1-2-3	DMA page register write/read failed.	(Trained service technician only) Replace the
		system board.

148ThinkServer TD100 and TD100x: Hardware Maintenance Manual