Lenovo 6436, 6438, 6437, 6435 manual I9990305

Table 4. Abbreviated list of POST error codes (continued)

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

vSee the parts listing in the Hardware Maintenance Manual 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.

Error code	Description	Action
I9990305	An operating system was not	1.	Make sure that a bootable
	found.
			operating system is installed.
		2.	Run the hard disk drive
			diagnostic tests.
		3.	Reseat the following
			components:
			a.	Hard disk drive
			b. CD or DVD drive and
				cables
			c.	(Trained service technician
				only) System board
		4.	Replace the components listed
			in step 3 one at a time, in the
			order shown, restarting the
			server each time.
I9990650	AC power has been restored.	1.	Check the power cables.
		2.	Check for interruption of the
			power supply.

44ThinkServer RS110 Types 6435, 6436, 6437, and 6438: Installation Guide