IBM Type 7977 manual IBM System x Documentation CD for

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

vSee the Problem Determination and Service Guide on the IBM System x Documentation CD 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 found.	1.	Make sure that a bootable operating system is
			installed.
		2.	Run the hard disk drive diagnostic tests.
		3.	Reseat the following components:
			a.	Hard disk drive
			b. SAS hard disk drive backplane and cables
			c. DVD drive and cables
		4.	Replace the following components one at a time,
			in the order shown, restarting the server each
			time:
			a.	Hard disk drive
			b. SAS hard disk drive backplane and cables
			c. DVD drive and cables
			d. (Trained service technician only) System
				board
I9990650	AC power has been restored.	1.	Check the power cables.
		2.	Check for interruption of the power supply (see
			the Problem Determination and Service Guide on
			the IBM System x Documentation CD for
			information on the power-supply LEDs).
		3.	Reseat the following components:
			a.	Power supply
			b. (Trained service technician only) Power
				backplane
		4.	Replace the components listed in step 3, one at a
			time, in the order shown, restarting the server
			each time.

76IBM System x3500 Type 7977: Installation Guide