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Cisco Catalyst 6000 Series Switches

Field Notice: *Expired* FN - 23254 - Reversed Fan Blade on some Catalyst 6500 6-Slot Chassis Fan Trays


Revised July 3, 2008
March 6, 2003


NOTICE:

THIS FIELD NOTICE HAS BEEN EXPIRED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.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

  • WS-C6K-6SLOT-FAN=

  • WS-C6506-2GE

  • WS-C6506-PFC2

  • WS-C6506-IPSEC-K9

  • WS-C6006-1300AC=

  • WS-C6006=

  • WS-C6506-1000AC=

  • WS-C6506=

  • WS-C6006-1000AC=

  • WS-C6506-1300AC=

  • WS-C6006

  • WS-C6506

Serial Numbers

          

Sequential #

Random #

From TSC06500020 To TSC06500036

From TSC0650006Z To TSC065000B7

From TSC0651008V To TSC065100D8

From TSC06520001 To TSC0652000Q

From TSC0652003P To TSC06520060

From TSC0701002Y To TSC0701004D

From TSC0701007Q To TSC070100C0

From TSC0702002Z To TSC0702005W

From TSC0702009C To TSC070200C8

From TSC0704008Z To TSC070400AE

From TSC07050030 To TSC0705005X

TSC06480006, TSC06480008, TSC0648000A, TSC0648000A, TSC0650001R

          

Problem Description

Incorrectly assembled fan trays on the Catalyst 6500 six-slot chassis have the fans installed in the fan tray bracket in a reversed orientation.

Background

An error in a supplier's process caused a few units to be assembled incorrectly. These units have the fan blades in the reversed orientation. The airflow direction through the chassis is reversed when using the affected fan trays. The correct airflow is evacuating the chassis. Good units should have the air pulled through the chassis and blowing out the left side when facing the card cage and fan tray access side of the chassis.

Problem Symptoms

Although the airflow direction is reversed when using an affected fan trays, there is no immediate impact to the functionality of the system. However, continued use of this affected fan tray may cause overheating in some configurations resulting in unscheduled system shutdowns.

Workaround/Solution

Affected units can be identified by serial number of chassis or by visual inspection. The affected units need to have the Fan Tray replaced.

Please confirm the serial number is within the ranges specified above. Also verify by visual inspection that the blades are reversed. Once that is confirmed, please use the standard RMA process to obtain an unaffected fan blade.

How to Identify Serial Numbers

Affected units can be identified through the chassis serial numbers listed above. To identify the serial number of your chassis, use the following commands:

When using CatOS, use the show version command.

Console> (enable) show version
WS-C6506 Software, Version NmpSW: 6.4(0.15-Eng)
Copyright (c) 1995-2003 by Cisco Systems
NMP S/W compiled on Jan 9 2003, 04:01:04

System Bootstrap Version: 5.3(1)

Hardware Version: 2.0 Model: WS-C6506 Serial #: TBA04501415 <<====== Serial Number Here

PS1 Module: WS-CAC-1300W Serial #: SON04373422

Mod Port Model               Serial #    Versions
--- ---- ------------------- ----------- --------------------------------------
1   2    WS-X6K-SUP1A-2GE    SAD05010MT2 Hw : 7.0
                                         Fw : 5.3(1)
                                         Fw1: 5.4(2)
                                         Sw : 6.4(0.15-Eng)
                                         Sw1: 6.4(0.15)
         WS-F6K-PFC          SAD050201N0 Hw : 1.1
6   48   WS-X6348-RJ-45      SAL05052WYD Hw : 1.4
                                         Fw : 5.4(2)
                                         Sw : 6.4(0.15)
15  1    WS-F6K-MSFC         SAD05010KH3 Hw : 2.1
                                         Fw : 12.1(20030109:202654
                                         Sw : 12.1(20030109:202654

       DRAM                    FLASH                   NVRAM
Module Total   Used    Free    Total   Used    Free    Total Used  Free
------ ------- ------- ------- ------- ------- ------- ----- ----- -----
1      130944K 50454K  80490K  16384K  9740K   6644K   512K  269K  243K

Uptime is 19 days, 9 hours, 50 minutes

When using Cisco IOS? Software, use the show idprom backplane command.

Router# show idprom backplane
IDPROM for backplane #0
(FRU is 'Catalyst 6500 6-slot backplane')
OEM String = 'Cisco Systems'
Product Number = 'WS-C6506'
Serial Number = 'TBA04010594' <===== Serial Number Here
Manufacturing Assembly Number = '73-3436-02'
Manufacturing Assembly Revision = 'B0'
Hardware Revision = 2.0
Current supplied (+) or consumed (-) = -A

How To Identify Hardware

You can identify affected hardware though visual inspection.

Good fan tray.

fn23254_ha7nsg.jpg

Bad fan tray.

fn23254_ha7ntf.jpg

To verify correct fan orientation, check for labels on fan rotor. The white or silver round labels located on each fan rotor hub should be visible when viewed through the ventilation perforation on the left side (fan tray side) of the chassis.

Please see the photos below for the differences between Good and Bad units partially inserted, you can see the labels through the ventilation performations on good units.

Good fan tray.

fn23254_ha7nvn.jpg

Bad fan tray.

fn23254_ha7nwa.jpg

Revision History

  
Revision Date Comment
1.3 03-JUL-2008 Expired field notice
1.2 08-MAR-2006 Removed Umpire Form
1.1 11-MAR-2003 Maintenance Update
1.0 07-MAR-2003 Initial Public Release

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: