Cisco Systems 474, 274 manual OL-17739-01

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 four		4	Power failure (power supply	1. Open the hood and ensure
times, once every second,			is overloaded).		the 4 or 6-wire power supply
followed by a 2-second					cable is seated into the
pause. Beeps stop after fifth					connector on the system
iteration but LEDs continue					board.
until problem is solved.				2. Check if a device is causing
					the problem by removing all
					attached devices such as
					hard drives, optical drives,
					and expansion cards. Power
					on the system. If the system
					enters the POST, then power
					off and replace one device at
					a time and repeat this
					procedure until a failure
					occurs. Replace the device
					that is causing the failure.
					Continue adding devices one
					at a time to ensure that all
					the devices are functioning
					properly.
				3.	Contact Cisco TAC.
Red Power LED flashes five		5	Pre-video memory error.	1.	Reseat DIMMs.
times, once every second,			CAUTION: To avoid	2.	Contact Cisco TAC.
followed by a 2-second			damage to the DIMMs or the
pause. Beeps stop after fifth			system board, you must
iteration but LEDs continue			unplug the computer power
until problem is solved.			cord before attempting to
			reseat, install, or remove a
			DIMM module.
Red Power LED flashes six		6	Pre-video graphics error.	Contact Cisco TAC.
times, once every second,
followed by a 2-second
pause. Beeps stop after fifth
iteration but LEDs continue
until problem is solved.
	Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
5-18					OL-17739-01