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

 

 

 

 

 

 

 

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