Lenovo 3719, 3821, 3822, 3823 manual Vrm

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

vSee the Chapter 8, “Parts Listing, TD200x Machine Types 3719, 3821, 3822, and 3823,” on page 237 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.

Lit EasyLED
diagnostics LED with
the system-error or
information LED also
lit	Description	Action
VRM	A VRM has failed.	1. Check the system-event log to determine the
		reason for the lit LED (for a VRM).
		2. Determine whether the CNFG LED is also lit. If the
		CNFG LED is lit, the memory configuration is
		invalid. Reseat the VRM.
		3. If the CNFG LED is not lit, reseat the following
		components:
		a.	Failing VRM
		b. (Trained service technician only)
			Microprocessor associated with the VRM
		4. Replace the following components one at a time,
		in the order shown, restarting the server each time:
		a.	Failing VRM
		b. (Trained service technician only)
			Microprocessor associated with the VRM
		c. (Trained service technician only) System board
Microprocessor (CPU)	A microprocessor has failed, or an	1. Check the system-event log to determine the
	invalid microprocessor configuration
		reason for the lit LED.
	is installed.
		2. Determine whether the CNFG LED is also lit. If the
	Note: (Trained service technician
		CNFG LED is not lit, a microprocessor has failed.
	only) Make sure that the
		a.	Make sure that the failing microprocessor,
	microprocessors are installed in the
	correct sequence.		which is indicated by the CPU1 or CPU2 error
			LED on the system board, is installed correctly.
		b. Replace the following components one at a
			time, in the order shown, restarting the server
			each time:
			1) (Trained service technician only) Failing
			microprocessor
			2) (Trained service technician only) System
			board
		c. If the CNFG LED is lit and the CPU mismatch
			LED on the system board is also lit, an invalid
			microprocessor configuration is installed:
			1) Make sure that the microprocessors are
			compatible with each other. They must
			match in speed and cache size. Use the
			Setup utility to compare the microprocessor
			information.
			2) (Trained service technician only) Replace
			the incompatible microprocessor.

82ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual