Field Notice: FN - 70048 - EDR Transmitter Module - Oscillator Nonfunctional over Entire Temperature Range - RMA Unit - Replace on Failure

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.

Revision History

Revision	Publish Date	Comments
1.0	06-Oct-17	Initial Release
1.1	10-Oct-17	Updating the "How to Identify Repaired Products" Section
1.2	04-Nov-19	Updated FN by removing references to Archived Umpire

Products Affected

Affected Product ID	Comments
4042877
4042885
4042889
P2-HD-EDR-SA=
GS7K-TXE21-1310SA
GS7K-TXE21-1550SA

Defect Information

Defect ID	Headline
CSCvg13426	EDR Transmitter Module - Oscillator Nonfunctional Over Entire Temperature Range

Problem Description

Cisco 2:1 Enhanced Digital Return (EDR) transmitters manufactured between January 2017 (Date Code A2017) and August 2017 (Date Code H2017) were produced with an oscillator which might cause the EDR return link from a Prisma II chassis, a GS7000, a GainMaker, or a Compact Node to temporarily lose radio frequency (RF) output. This loss of RF output translates to a loss of video for the end customer.

Date Code Table

A = January	B = February	C = March	D = April
E = May	F = June	G = July	H = August
J = September	K = October	L = November	M = December

Background

Affected Cisco 2:1 EDR transmitters will fail in a narrow temperature window (2-3 degrees C/F) of the operating temperature range of the host nodes. While the failing temperature window for individual transmitters is narrow, those windows are distributed over a range of 60 degrees C or 108 degrees F in the general population of modules.

In the affected temperature range the oscillator can cause excessive jitter, which disrupts the data stream from the transmitter within the EDR link. The corrupted data, if severe enough, can cause the receiver to mute RF.

Once the transmitter passes through the affected temperature range the jitter is reduced and the data stream recovers to normal without an equipment reset.

Cisco manufacturing is building known good modules as of September 1, 2017 and those modules are currently shipping. Any EDR module with date codes prior to January 2017 (A2017) or after August 2017 (H2017) does not need rework. For units in the affected date code range, reworked modules will have both internal and external labels (D530751) for identification. See the example pictures in the "How to Identify Repaired Products" section.

Problem Symptom

Cisco 2:1 EDR transmitters with defective oscillators can experience a temporary loss (muting) of RF from the corresponding receiver in the link. There are no fault indications in the optical portion of the link. If, however, the alarm “Summary Status” is viewed in Local Craft Interface (LCI), it will show both an alarm and the “Loss of Data” on the affected receiver. See this LCI screenshot for an example.

Workaround/Solution

Cisco recommends that all Cisco 2:1 EDR transmitters manufactured from January 2017 (A2017) through August 2017 (H2017) be replaced with updated modules. Cisco will work directly with impacted sites to replace warehouse inventory first and then follow up with customers in order to address field units to minimize disruption.

Customers that have affected units will need to follow the normal Return Material Authorization (RMA) process to replace any affected units.

How To Identify Affected Products

Customers can refer to the label on the product or the label found on the outside of the shipping container in order to determine the date/date code or serial number.

Date Code Table

A = January	B = February	C = March	D = April
E = May	F = June	G = July	H = August
J = September	K = October	L = November	M = December

Serial Number Validation Tool

Date/Date Code Location on GS7000 Back Panel and Shipping Label Location

Date/Date Code and Serial Number Location on GainMaker/Gainstar/Compact EDR Panel and Shipping Label Location

Date/Date Code and Serial Number Location on Prisma II HD EDR Panel and Shipping Label Location

How to Identify Repaired Products

All repaired units will have a “D530751” or a “Reworked” sticker located on the product or on the product shipping container.

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:

• Open a service request on Cisco.com
• By email
• By telephone

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