Replace the DB-9 LED Cable

You can replace the DB-9 LED cable with no impact to the operation of the modular system.

Obtain a No. 3 Phillips screwdriver for the procedure.

1. Follow safety and ESD precautions.

   See Safety and ESD Precautions.

2. From the front of the modular system:
   1. Remove the status LED panel located on the top front of the modular system.

      See Remove the LED Panel.

   2. Disconnect the existing cable from the LED panel.
   3. Connect the new cable to the LED panel, then route the cable to the rear of the modular system and over the coupler panel at slot 41.
3. Install the LED panel.

   See Install the LED Panel.

4. At the rear of the modular system:
   1. Remove the node rear support bracket from slot 20.
   2. Starting from the top, remove the FBS covers a few at a time.

      See Replace an FBS PCB for FBS cover removal instructions.

      See Precautions for Handling Cords and Cables.

   3. Lay the new cable in the right-side channel.
   4. If possible, remove the faulty cable completely.
   5. Disconnect the DB-9 cable from the FMM.
   6. Connect the new DB-9 cable to the FMM.
5. Install the node rear support bracket at slot 20.

Related Information

• Front Components

• Identifying Component Locations and Slot Numbers

• Safety and ESD Precautions

• Identifying Port Mapping

• Replacing the System Status LED Panel