• Topic ID: id_18718288
  • Version: 3.0
  • Date: Nov 27, 2020 2:17:19 AM

Intercom Board Replacement

Prerequisites

Overview

Procedure

  1. Remove right side cover.
    2. Notice Image
    • notice
    • Always turn OFF the HVDC before the 120 VAC. Turning OFF 120 VAC power before HVDC power can result in equipment damage.
  2. Turn off the three (3) main power switches (Axial Drive, HVDC, 120VAC) on the Service Switch Panel.
  3. Use the quarter inch ratchet to loosen but not remove the 2 lower nuts and washers.
    note:

    Be careful not to lose the nuts and washers. Also notice that the flat washer is installed first, then the lock washer and then the nut.

  4. Remove 2 upper nuts and washers.
  5. Disconnect control cable.
  6. Remove 4 screws that secure intercom board.
  7. Reinstall intercom board in reverse order. Verify that J2 jumper is in auto position.

Finalization

  1. Do the following:

    • Reference “Remote Intercom Board,” for test point and adjustments.

    • J2 AGC control Normal setting is Auto.

    • Perform the Intercom board check and adjustment defined by Intercom Adjustment.

    Figure 1. Remote Intercom X Board - Obsolete (no adjustments)