NIU/TCU Installation

To install an NIU/TCU into the Acme Packet 6300/6350 chassis:

1. Locate the NIU/TCU.
2. Ensure that the ejection levers on the front of the NIU/TCU are in the open and extended position.
3. Hold the NIU/TCU by its sides with the front panel bezel facing you.
4. Note the two flared guide rails that the NIU/TCU rides as it is inserted into the Acme Packet 6300/6350. The guide rails lead the NIU/TCU to engage with the bus connector squarely.
   

   Aligning the NIU/TCU Card with the Chassis Slot Guides

5. Slide the NIU/TCU into the Acme Packet 6300/6350.
   

   Installing the NIU/TCU (NIU Shown)

6. Continue sliding the NIU/TCU into the chassis until the ejection levers catch the chassis. At this point, the ejection levers will start to fold inward as the NIU/TCU is inserted into the chassis.
7. Fold both ejection levers inward toward the face of the NIU/TCU to draw the physical interface card toward the system chassis complete the connection to the motherboard.
   

   Locking the NIU/TCU to the Chassis (NIU Shown)

   

   Ensure pressure is applied to the ends of the ejector (not the sliding section) when seating the NIU/TCU

8. Verify the lever catch is fully engaged with the bezel.
9. Screw the NIU/TCU thumbscrews into the chassis with a #2 Phillips screwdriver. This creates the final connection between the interface unit and the chassis.
   

   Tightening NIU/TCU Thumbscrews

10. Replace all network and management cabling.
11. Replace all power cables. The system boots up.
12. If the H/S LED lights in either a steady or flashing state, the NIU is not seated properly. If the H/S LED is lit, follow these steps:

    Unplug the power cords to power down the chassis.

    Push the ejection levers inward to draw the physical interface card toward the system chassis and complete the connection. The latches must engage to complete NIU insertion. Verify the lever catch is fully engaged with the bezel.

    Replace all power cables. The system boots up.

    When the NIU PWR LED is lit and the H/S LED is extinguished, proceed with normal operations. Otherwise, contact customer support for further assistance.