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Cisco 7800 Series Media Convergence Servers

Field Notice: FN - 62205 - MCS-7835-H1 and MCS-7845-H1 Front Bezel Racking Issue


November 1, 2005

NOTICE:

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


Products Affected

Products Affected

MCS-7835-H1-CC1

MCS-7845-H1-CC1

MCS-7835-H1-ECS1

MCS-7835-H1-RC1

MCS-7835-H1-UC1

MCS-7845-H1-ECS1

MCS-7845-H1-RC1

MCS-7845-H1-UC1

MCS-7835-H1-IPC1

MCS-7845-H1-IPC1

Problem Description

Quick-release tabs on the above mentioned servers are mis-aligned with the racking flanges, such that tabs do not recess the flanges when it is necessary to remove the server from the rack.

Below is an image of the front bezel quick-release tab correctly aligned with the racking flange:

fn62205_in4cq9.jpe

Below is an image of the front bezel tab that is misaligned:

fn62205_in4cyv.jpe

Background

When a server is installed in the rack, the levers do not disengage the lock, and the server cannot be removed from the rack when required.

There are 2 pieces on the server that make up this locking/unlocking mechanism: a lever on the bezel and a spring loaded metal tab on the side of the chassis. The spring loaded tab needs to be on the inside of the lever. When the lever is pulled, it pushes the tab closer to the chassis and the server can slide out of the rack.

The problematic servers have this tab on the outside of the lever, so the lever cannot push the tab to disengage the lock. It seems likely that this problem was created when the bezel was attached to the chassis.

A limited number of servers are affected. Not all units shipped have this issue.

Problem Symptoms

A server installed in a rack will not be able to be removed from the rack if required.

A server can be identified as an affected unit if the quick-release lever stays in the "released" position on it's own. See below:

fn62205_in4kc3.jpe

Workaround/Solution

If it is detected that the quick-release tab is mis-aligned, it can be fixed by reinstalling the front bezel. Remove the front bezel by removing the front bezel screws with a #15 Torx driver. See below:

fn62205_in4jsc.jpe

Reinstall the front bezel by aligning it with the bottom tabs. See below:

fn62205_in4k5d.jpe

Align bezel corner caps such that they enclose the chassis front bezel flange. See below:

fn62205_in4k7l.jpe

For servers that are already installed:

To release the server from the rack, wedge a small flat blade screw driver between the racking flange and the rail catch. Use the screw driver to force the racking flange towards the server, disengaging it from the rack catch. While the racking flange is disengaged from the rail catch, pull down the opposite side quick-release lever and pull out the server. See below:

fn62205_in4kgq.jpe

As a permanent solution, all assembly operators have been trained/re-trained to ensure the tab is on the correct side of the release lever. This was completed August 2, 2005. Also, additional inspections are in place to ensure the proper alignment of the lever.

Note: A Torx #15 tool is provided inside the server chassis. See the image below to assist in locating this tool.

fn62205_ip32xd.jpe

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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