Lenovo TD100X manual Diagnostics

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.

System-error log message	Action
System shutoff due to +3.3V over voltage	1.	Reseat the following components:
		a. Hot-swap power supplies (if any are installed)
		b. (Trained service technician only) Power-supply cables on
		the system board
	2.	(Trained service technician only) Replace the system board.
System shutoff due to +3.3V under voltage	1.	Reseat the following components:
		a. Hot-swap power supplies (if any are installed)
		b. (Trained service technician only) Power-supply cables on
		the system board
	2.	(Trained service technician only) Replace the system board.
System shutoff due to 1.5V CPU over voltage	1.	Reseat the following components:
		a. Hot-swap power supplies (if any are installed)
		b. (Trained service technician only) Power-supply cables on
		the system board
	2.	(Trained service technician only) Replace the system board.
System shutoff due to 1.5V CPU under voltage	1.	Reseat the following components:
		a. Hot-swap power supplies (if any are installed)
		b. (Trained service technician only) Power-supply cables on
		the system board
	2.	(Trained service technician only) Replace the system board.
System shutoff due to board over temperature	1.	Make sure that all fans have good airflow and are not
		obstructed.
	2.	(Trained service technician only) Replace the system board.
System shutoff due to continuous +5v over	1.	Reseat the following components:
voltage
		a. Hot-swap power supplies (if any are installed)
		b. (Trained service technician only) Power-supply cables on
		the system board
	2.	(Trained service technician only) Replace the system board.
System shutoff due to continuous +5v under	1.	Reseat the following components:
voltage
		a. Hot-swap power supplies (if any are installed)
		b. (Trained service technician only) Power-supply cables on
		the system board
	2.	(Trained service technician only) Replace the system board.
System shutoff due to CPU over temperature	1.	Make sure that the heat sink has good airflow and is not
		obstructed.
	2.	Reseat the following components:
		a. Heat sink cable
		b. (Trained service technician only) Heat sink

Chapter 5. Diagnostics 211