Cisco Systems 274, 474 manual Post Diagnostic Front Panel LEDs and Beep Codes

Chapter 5 Troubleshooting the System Hardware

					Power-On Self Test (POST)
Table 5-11	POST Diagnostic Front Panel LEDs and Beep Codes (continued)
Activity		Beeps	Possible Cause	Recommended Action
Red Power LED flashes two		2	Processor thermal	1.	Ensure that the computer air
times, once every second,			protection activated: A fan		vents are not blocked and
followed by a 2-second			may be blocked or not		the processor cooling fan is
pause. Beeps stop after fifth			turning or the heatsink/fan		running.
iteration but LEDs continue			assembly is not properly	2.	Open hood, press power
until problem is solved.			attached to the processor.
					button, and see if the
					processor fan spins. If the
					processor fan is not
					spinning, make sure that the
					fan’s cable is plugged onto
					the system board header.
				3.	If the fan is plugged in, but it
					is not spinning, the fan
					assembly is faulty.
				4.	Contact Cisco TAC.
Red Power LED flashes		3	Processor not installed (not	1.	Check to see that the
three times, once every			an indicator of bad		processor is present.
second, followed by a			processor).	2.	Reseat the processor.
2-second pause. Beeps stop
				3.	Contact Cisco TAC.
after fifth iteration but LEDs
continue until problem is
solved.

	Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
OL-17739-01		5-17