Cisco Systems 474, 274 manual See the Undetermined Problems section on

Chapter 5 Troubleshooting the System Hardware

Symptoms and Solutions

Table 5-5	Intermittent Problems
Symptom		Cause and Action
A problem occurs only		1.	Verify the following items:
occasionally and is difficult to			a.	All cables are connected securely to the rear of the device.
detect.
			b.	When the device is powered on, air is flowing from the rear
				of the device at the fan grille. If there is no airflow, the fans
				are not working. This problem causes the device to overheat
				and shut down.
		2.	Check the system error log.
		3.	See the “Undetermined Problems” section on page 5-6.
Table 5-6	Memory Problems
Symptom		Cause and Action
The amount of system		1.	Verify the following items:
memory displayed is less than			a.	No error LEDs are lit on the front panel.
the amount of physical
			b.	The memory modules are seated properly.
memory installed.
			c.	All banks of memory on the DIMMs are enabled. The device
				might have automatically disabled a DIMM bank when it
				detected a problem.
		2.	Check the POST error log:
			a.	If a DIMM was disabled by a system management interrupt
				(SMI), the DIMM must be replaced.
			b.	If the DIMM was disabled by the user or by POST, follow
				these steps:
			–	Start the configuration/setup utility program.
			–	Enable the DIMM.
			–	Save the configuration and restart the device.
		3.	Check the DIMM.
		4.	Check the system board.
	Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
5-10				OL-17739-01