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Cisco ONS 15454 Series Multiservice Provisioning Platforms

Field Notice 15067: ONS-15454 Electrical Interface Assembly Board Flexing


September 7, 2001



Products Affected

Product

Top Assembly

Comments

Part Number

Rev.

15454-EIA-AMP-A84=

800-06750-01

D1

Elec I/F 84 AMP, A Side

15454-EIA-AMP-B84

800-06751-01

D1

Elect I/F, 84 AMP B Side

15454-EIA-AMP-B84=

800-06751-01

D1

Elect I/F, 84 AMP B Side

15454-EIA-BNC-A24

800-06752-02

C0

Elect I/F, 24 BNC, A Side

15454-EIA-BNC-A24=

800-06752-02

C0

Elect I/F, 24 BNC, A Side

15454-EIA-BNC-B24

800-06753-02

C0

Elect I/F, 24 BNC, B Side

15454-EIA-BNC-B24=

800-06753-02

C0

Elect I/F, 24 BNC, B Side

15454-EIA-SMB-A84

800-06754-02

E0

Elect I/F, 84 SMB, A Side

15454-EIA-SMB-A84=

800-06754-02

E0

Elect I/F, 84 SMB, A Side

15454-EIA-SMB-B84

800-06756-02

D0

Elect I/F, 84 SMB, B Side

15454-EIA-SMB-B84=

800-06756-02

D0

Elect I/F, 84 SMB, B Side

Problem Description

Bowing or flexing of the Electrical Interface Assembly (EIA) Printed Circuit Board (PCB) during installation may prevent the backplane connectors from making complete electrical contact. This condition can be aggravated by improper installation techniques.

Background

Given the placement of the backplane interface connectors and the width of the EIA, bowing or flexing of the EIA PCB during installation may prevent the backplane connectors from seating completely. Strict adherence to installation instructions will minimize, if not eliminate, the occurrence of this issue.

For comprehensive installation instructions, refer to the following documentation:

Cisco ONS 15454 Spare Parts Installation

Problem Symptoms

When one or more ports are brought up, they may fail to pass traffic correctly.

Workaround/Solution

A retrofit kit has been developed to address the board flexing issue. This field installable kit (15454-EIA-RETRO=) should be installed on affected EIAs shipped before 8/1/01. Retrofit kits may be obtained by contacting the Technical Assistance Center (TAC) as outlined at the end of this document. While proper installation techniques will overcome the flexing issue, installing the retrofit kit will also eliminate this condition.

All necessary instructions are included in the retrofit kit.

Post-Installation Inspection

Note:?The following process demonstrates that the ports are making positive electrical connection.

If a port fails this test, the connector is likely not electrically connected and the retrofit kit should be installed. If the same port fails after being reseated, it should be replaced through the standard TAC RMA process.

A DS1 card is recommended for this test because it allows the testing of all fourteen ports. A DS3 card can be used to test the first twelve.

  1. Install the DS1 test card in the slot to be tested.

  2. Place the port to be tested in service by using the Provisioning tab in the GUI.

  3. Confirm that an LOS alarm indication is received for the specific port.

  4. Loop the Tx connector to the Rx connector for the port (cable required "Balun").

  5. Confirm that the LOS alarm indication is cleared, and that an AIS alarm is indicated for the port.

  6. Return the port to its pretest condition.

  7. Repeat as desired for any/all slots/ports.

Once an EIA has been placed in service and is passing traffic, proper installation is complete. Installation of the retrofit kit in this case is not required. If the user wishes to install the retrofit kit, it should be done during regularly scheduled maintenance periods. Cisco recommends installation only where needed.

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: