Lenovo 3826, 3836, 3809, 3724, 3824, 3808, 3815 Microprocessor problems, Monitor or video problems

Microprocessor problems

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

vSee the Hardware Maintenance Manual to determine which components are customer replaceable units (CRUs) and which components are field replaceable units (FRUs).

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

Symptom	Action
A microprocessor LED is lit	1.	Make sure that the server supports all the microprocessors and that the
during POST, indicating that the
		microprocessors match in speed and cache size.
startup (boot) microprocessor is
	2.	Reseat the following components:
not working correctly.		a. (Trained service technician only) Microprocessor
		b. VRM
	3.	(Trained service technician only) If there is no indication of which
		microprocessor has failed, isolate the error by testing with one microprocessor
		at a time.
	4.	Replace the following components one at a time, in the order shown, restarting
		the server each time:
		a. (Trained service technician only) Microprocessor
		b. (Trained service technician only) System board
	5.	(Trained service technician only) If there are multiple error codes or LEDs that
		indicate a microprocessor error, reverse the locations of the microprocessors or
		with a microprocessor socket.

Monitor or video problems

Some Lenovo monitors have their own self-tests. If you suspect a problem with your monitor, see the documentation that comes with the monitor for instructions for testing and adjusting the monitor. If you cannot diagnose the problem, call for service.

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

vSee the Hardware Maintenance Manual to determine which components are customer replaceable units (CRUs) and which components are field replaceable units (FRUs).

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

Symptom	Action
Testing the monitor	1.	Make sure that the monitor cables are firmly connected.
	2.	Try using a different monitor on the server, or try using the monitor that is being
		tested on a different server.
	3.	Run the diagnostics programs. If the monitor passes the diagnostics programs,
		the problem might be a video device driver.
	4.	Replace the following components one at a time, in the order shown, restarting
		the server each time:
		a. (Trained service technician only) System board

168ThinkServer TD200 Types 3724, 3808, 3809, 3815, 3817, 3824, 3826, 3836: Installation and User Guide