Replace an Ethernet Cable From FMM to a Switch or a Coupler Panel

This procedure replaces cables from the FMM to the switch management ports and the coupler panel.

1. Follow safety and ESD precautions.

   See Safety and ESD Precautions.

2. Disconnect the faulty cable from switch or coupler panel.

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   Note -  The coupler panel connection is on the side of the coupler panel that faces the front of the modular system. (See Rear Components.)

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3. Connect the replacement cable.

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   Tip  - In the following steps, you will be instructed to replace the FBS covers. They are easy to install incorrectly. When installed correctly, the top back edge of each cover will be underneath its FBS. A cover's edge must not be laying on top of an FBS. You can either look at RU 18 or 34 for reference, or you can remove and install the one at RU 34 to see how it to install it correctly.

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4. Remove the nearby FBS covers, and start laying in the replacement cable, reinstalling FBS covers as you install the cable toward the FMM.

   See Replace an FBS PCB for FBS cover removal instructions.

   See Precautions for Handling Cords and Cables.

5. When the cable is at the FBS at slot 21, install the remaining FBS covers.
6. Remove the cosmetic cover from slots 19 and 20.
7. Remove the front and rear node support brackets at slot 20.
8. If necessary, remove the cosmetic cover mounting bracket to provide access cable removal and insertion.
9. Disconnect the faulty cable from the FMM.
10. Coil up the excess replacement cable.
11. Connect the cable to the FMM port vacated by the faulty cable.
12. Reinstall the node support brackets (slot 20).
13. If removed earlier, reinstall the cosmetic cover mounting bracket, then the cosmetic covers.
14. Reboot the FMM.

Related Information

• Identifying Component Locations and Slot Numbers

• Safety and ESD Precautions

• Identifying Port Mapping

• Replacing Switches

• Replacing the RJ-45 Coupler Panel