Lenovo 6525, 6523, 6524, 6530, 6522, 6526, 6528, 6529 manual Intermittent problems

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 (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 hard disk drive passes the	Run the diagnostic SCSI Fixed Disk Test (see “Running the diagnostic programs”
diagnostic Fixed Disk Test, but	on page 176).
the problem remains.	Note: This test is not available on servers that have RAID arrays or servers that
	have SATA hard disk drives.

Intermittent problems

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 (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 problem occurs only	1.	Make sure that:
occasionally and is difficult to
		v All cables and cords are connected securely to the rear of the server and
diagnose.		attached devices.
		v When the server is turned on, air is flowing from the fan grille. If there is no
		airflow, the fan is not working. This can cause the server to overheat and
		shut down.
	2.	Check the system-event log or IMM log (see “Event logs” on page 142).
	3.	See “Solving undetermined problems” on page 142.

Chapter 8. Troubleshooting 131