• Optima MR450w BASE 1.5T System Service Methods
  • 5690012-2EN Revision 3
  • Object ID: 00000018WIA30EAF030GYZ
  • Topic ID: id_12374926 Version: 1.7
  • Date: Jul 5, 2019 10:03:33 PM

Transient Detection Module (TDM) Replacement

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable30 minutes30 minutes
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Non-Magnetic Service Tool Kit1-

5112581

-
Table 3. Replacement parts
ItemQuantityEffectivityPart numberManufacturer
Transient Detection Module (TDM)1-

Refer to FRU Manual

-
Table 4. Safety

Removing TDM

Procedure

  1. Perform LOTO on the PEN cabinet. See the MR Service Safety Manual, PN 5452735.
  2. Remove the magnet side cover to access the TDM. See Side Cover Removal and Installation.
    Figure 1. Removing Magnet Side Cover
  3. Disconnect all cables connected to the TDM.
    Note:

    Remove J1 before you remove J12 in order to prevent damage to the end of the cable connected to J12.

    Figure 2. TDM Cable Connections
  4. Remove the four screws holding the TDM to the magnet.
    Figure 3. Remove TDM Screws
  5. While carrying the module out of the magnet room, stay as far away from the magnet as possible.

Installing TDM

Procedure

  1. While carrying the module into the magnet room, stay as far away from the magnet as possible.
  2. Secure the module to the magnet by tightening the four screws provided.
  3. Attach all cables that were previously removed. See Figure 2.
    Note:

    To prevent damage to the cables, connect J12 before you connect J1.

  4. Replace the side cover.
  5. Remove LOTO from the PEN cabinet. See the MR Service Safety Manual, PN 5452735.

Finalization

Procedure

  1. Run TNS Datapath Diagnostics to confirm there are no remaining issues.
  2. Run a test scan to make sure the system is functional. See Check Scan.