Internal cable replacement

You can replace the following internal cables or components on an Avaya Messaging Application Server (MAS):

• Motherboard to front LED panel ribbon cable
• Front LED panel
• Interface cable

Replacing the motherboard to LED panel cable

The front LED panel cable connection varies depending on the type of motherboard that is in the server.

To replace the motherboard to LED panel cable:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. Shut down the server and unplug the AC power cords.
3. Remove the front bezel and top cover.
4. Remove the circuit card hold-down bracket.
5. Remove the old motherboard to LED cable as follows. See figure Replacing the motherboard to LED panel cable.
   1. Open the tie-down strap that dresses the cables to the front LED panel.
   2. Unplug the cable from the J4 connector on the LED panel.
   3. Remove the cable from the tie-down strap.
   4. Unplug the other end of the LED panel cable from the motherboard.
   • Nonintegrated video and LAN model: Unplug the ribbon cable from the J8H1 Front Panel connector.
   • Integrated video and LAN model:
     1. Unplug the translator board that is connected to the Front Panel connector on the motherboard.
     2. Unplug the ribbon cable from the translator board.

   Note: In an MAS, you might need to remove some port boards to access the Front Panel connector on the motherboard. If needed, see Circuit card replacement.

   5. Note how the LED panel cable is dressed behind or under the motherboard.
   6. Remove the faulty cable. Set it aside.
6. Install the new cable by reversing the removal steps (see Step 5).

Note: For the nonintegrated video and LAN model, fold the new ribbon cable like the old one to dress it under the motherboard.

7. Replace the circuit card hold-down bracket.
8. Replace the top cover and front bezel.
9. Restore power to the server.

If the system boots correctly, the new cable should be working.

 

Replacing the front LED panel

To replace the front LED panel:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. Shut down the system and unplug the AC power cords.
3. Remove the front bezel and top cover.
4. To remove the old LED panel, first disconnect all attached cables as follows:
   1. Using a screwdriver, loosen and remove the ground connection.
   2. Unplug the 2-pin cable to the power switch (J1).
   3. Unplug the motherboard cable (J4). See figure Replacing the LED panel.
5. Remove the two screws that hold the LED panel in place. Set the faulty panel aside.
6. Insert the new LED panel and reattach the two screws.
7. Reconnect all cables and the ground wire (see Step 4). All cables are keyed.
8. Replace the top cover and front bezel.
9. Restore power to the server.
10. After the system boots, verify that the LEDs on the front panel are working correctly.
11. When finished, replace the front bezel.

Replacing the interface cable

The interface cable links several internal systems, including fan power and the tachometer cable.

To replace the interface cable:

1. Verify that the replacement equipment is on site and appears to be in usable condition, with no obvious shipping damage.
2. Shut down the system and unplug the AC power cords.
3. Remove the front bezel and top cover.
4. Remove the circuit card hold-down bracket.
5. Remove the old interface cable as follows. See figure Replacing the interface cable.
   1. Unplug the 4-pin power cable.
   2. Unplug the two 3-pin connectors to the fans.
   3. Remove any cable ties as needed to remove the interface cable.
6. Install the new interface cable by reversing the removal steps (see Step 5).
7. Replace the circuit card hold-down bracket.
8. Replace the top cover and front bezel.
9. Restore power to the server.

If the system boots correctly, the new cable should be working.

Top of page