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Cisco PIX 500 Series Security Appliances

Field Notice: *Expired* FN - 14744 - PIX 506 Power Reset


Revised September 26, 2006

October 18, 2001

THIS FIELD NOTICE HAS BEEN ARCHIVED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE, WARRANTY OR SUPPORT. USE OF THE INFORMATION ON THIS FIELD NOTICE OR MATERIALS LINKED FROM THIS FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.


Products Affected

Product

Comments

PIX-506

PIX 506 Firewall

Serial Numbers

Sequential #

44404010000 - 44404529999

44405010000 - 44405399999

44480010000 - 44480529999

44481010000 - 44481399999

Problem Description

Some PIX 506 systems may power reset themselves and either reboot or freeze due to a poor internal power cable connection. This failure has been encountered in approximately three percent of systems manufactured prior to August 20, 2001.

Background

The original PIX 506 internal power cable connector may not retain sufficient grip with its motherboard contacts. It may work itself loose from vibration over time, or from friction between the cable or attached ferrite bead (square block) and the chassis lid.

A new internal power cable connector was introduced to production on August 20, 2001 that retains sufficient grip with its motherboard contacts. However, it is still possible in extreme cases for friction between the ferrite bead and the chassis lid to loosen the connection.

A cable tie-down was introduced to production on October 2, 2001 that holds the connectors together, as well as prevents any contact from occurring between the cable or attached ferrite bead with the chassis lid. This insures that the power connector will not work itself loose.

There is no smoke, fire or other safety risk associated with this poor contact.

Problem Symptoms

The PIX 506 system power resets itself and either reboots or enters into a frozen state where all interfaces and the console port are unresponsive. The frequency of the failure varies greatly, with some systems failing every few minutes and others every few weeks. While systems that have rebooted function normally until the next reset occurs, those that freeze require a manual power cycle to reboot and return to operation.

Associated symptoms may vary. The front, rear, and internal LEDs and fan may continue to function normally, fluctuate or turn off independently from each other during the power reset.

Workaround/Solution

Workaround

Systems that are experiencing the power reset may be brought back into normal operation by following these steps:

  1. Switch off power to the unit and disconnect the AC power supply from the chassis.

  2. Open the chassis by removing the two screws holding down the lid (located to the rear of the top of the chassis), shifting the lid back from the front bezel approximately 1 cm, and then lifting the lid up and off of the unit.

  3. Locate the power cable assembly leading from the power switch to the motherboard. Reseat the white connector attaching the cable assembly to the motherboard. Do this by gripping it by the sides, then removing it from the black connector on the motherboard. Then reinsert it into the same connector. Be sure to reseat it completely.

  4. Verify that the power cable assembly and ferrite bead (rectangular block) attached to the cable are tucked below the level of the chassis lid. If necessary, move the ferrite bead further away from the motherboard power connector to reduce stress on the cable.

  5. Replace the chassis lid and screws. Plug the AC power supply back in and then turn the power on.

Soution

The solution is to replace the failed hardware.

PIX 506 systems manufactured as of October 2nd, 2001 are free of this problem. A global purge of the service depot stock has been completed as of October 26th, 2001. All PIX systems replaced by the return materials authorization (RMA) process are free of this problem.

Customers who wish to replace one or more of their systems which are failing due to the problem described in this field notice should contact the Technical Assistance Center by following the instructions at the end if this notice and request a standard RMA.

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.

DDTS

Description

CSCdv04739

PIX-506:Inside pwr supply cable disconnects from motherboard

How To Identify Hardware Levels

The presence of a version tracking label on the underside of the PIX 506 chassis with version "800-06929-02 A0" or later indicates that this unit contains the new connector and tie-down. This label is placed on newly manufactured units as well as those reworked by Service to contain the new connector and tie-down, so this indication holds true even for systems with older serial numbers.

PIX 506 Version Tracking Label

fn14744_gl462c.jpg

fn14744_gl46i8.jpg

Related Field Notices

Field Notice

Problem Summary

PIX 515 and 506 Hang

Some PIX 515 systems will hang and become unresponsive, typically triggered by higher traffic throughput levels. PIX 506 systems may also be affected, however they are rarely used in environments where traffic throughput levels will reach the levels necessary to induce the hang.

PIX Firewall Serial Numbers

PIX 525 serial numbers as reported by the show version command have their first two characters truncated. For example, if the PIX chassis serial number is 44480521234 it will be reported by show version as 480521234. The first two characters cut off are always 44.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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