Removing Dynamic Disable Switch Board

Prerequisites

Procedure for replacing Dynamic Disable Switch Boards.

Procedure

  1. Turn Driver Module Power off.
  2. Shut off power to the System cabinet by switching OFF the System circuit breaker at the PDU.
  3. Lock out Tag out front panel cover at PDU. (Refer to OSHA Lockout Tagout Requirement.)
  4. Verify that power to the System Cabinet is off by checking the fans and LEDs on the MGD Chassis, RRF Chassis and the Driver Module.
  5. Disconnect J72, J73, J75, and J76 at the Penetration Panel (magnet enclosure side).
  6. Remove required magnet enclosures..
  7. Remove the covers from over the failed Dynamic Disable Switch (DDS) board inside the magnet bore. See Figure 1 and Figure 2.

    Figure 1. DYNAMIC DISABLE SWITCH BOARD REPLACEMENT

    Figure 2. DYNAMIC DISABLE SWITCH BOARD LOCATION

    (Two of the boards are located under the bridge. Refer to procedure for Bridge Removal/Replacement, for instructions on removing the bridge.)

  8. Remove Switch Board from Body Coil Assembly.
  9. See Installing Dynamic Disable Switch Board.

Finalization

No finalization steps.