Many procedures require that you lower the IOB bracket without removing the IOB.

  1. Open the controller box so that you can see the IOB [A]. (Opening the Controller Box)
  2. Disconnect the top of the IOB (x8, x3).
  3. Free the harnesses along the top edge of the board.
  4. Disconnect the IOB:
    [A] Upper left (x1)
    [B] Upper right (x1)
    [C] Lower left (x1)
    [D] Lower right (x1)
  5. Lower the IOB bracket (with PCB attached) until it stops.
  6. When you raise the IOB bracket to re-install it, check the upper left corner and confirm that the tab and slot are engaged and that the holes are aligned as shown.