• SIGNA™ Hero 3.0T Service Methods
  • 5852800-8EN Revision 1.0
  • Object ID: 00000018WIA30AA2640GYZ
  • Topic ID: id_2014166 Version: 1.18
  • Date: Jul 27, 2021 1:53:47 PM

Removing the Dual Drive Transmit Receive Switch (DTRSW) and two-channel preamp

Remove the Dual Drive Transmit Receive Switch (DTRSW) and two-channel preamp from the magnet outer electronics.

Prerequisites

Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1-15 minutes-
Tools and test equipment
ItemQuantityPart numberManufacturer
Nonmagnetic Titanium Service Tool Kit, Small Set1 Kit5113258-
Nonmagnetic Titanium Service Tool Kit, Large Set5112581-

Procedure

  1. Disconnect the appropriate cables from the DTRSW and two-channel preamp.
    OptionDescription
    Replacing the two-channel preampRemove cables from the J13, J20, J21, J22, and J23 connectors on the two-channel preamp.
    Replacing the DTRSWRemove all cables from the DTRSW and two-channel preamp.
    Figure 1. (For AR magnets) DTRSW and two-channel preamp cable connections
    Figure 2. (For UA magnets) DTRSW and two-channel preamp cable connections
  2. Remove the defective parts.
    OptionDescription
    Replacing the two-channel preampLoosen and remove the four nuts securing the two-channel preamp to the DTRSW, and remove the two-channel preamp.
    Replacing the DTRSWLoosen and remove the four screws securing the DTRSW, and remove the module.
    Figure 3. DTRSW screws
  3. While carrying the module out of the magnet room, make sure to stay as far away from the magnet as possible.
  4. If you are only replacing the DTRSW, loosen and remove the four nuts securing the two-channel preamp to the DTRSW, and remove the two-channel preamp. Put the two-channel preamp in a safe place until you are ready to install it on the new DTRSW.