• Topic ID: id_12373665
  • Version: 1.8
  • Date: Dec 16, 2019 2:21:27 PM

Body Hybrid Replacement

Prerequisites

Table 1 Personnel requirements
Required persons Preliminary requirements Procedure Finalization
2 for MR750; 1 for MR450, MR450w, MR450w GEM Not Applicable 30 minutes 30 minutes
Table 2 Tools and test equipment
Item Quantity Effectivity Part number Manufacturer
Non-Magnetic Service Tool Kit 1 -

5112581

 -
Table 3 Replacement parts
Item Quantity Effectivity Part number Manufacturer
1.5T Body Hybrid Module 1 -

See FRU Manual

 -
Table 4 Safety
  • warning
  • Shock Hazard!
  • high bias voltages are present at the Body Hybrid during normal operation.
  • Remove power and perform LOTO on the PDM-RF power on pdu before accessing the Body Hybrid. See the “MR Service Safety Manual,” PN 5452735.
  • caution
  • Strong Magnetic Field!
  • The module has no ferrous material and is not attracted to the magnet, but eddy currents set up by the strong magnetic field interacting with the body hybrid module can make it very hard to handle.
  • When removing and or replacing the body hybrid module from the side of the magnet, keep the module as far away from the magnet as possible.

Removing Body Hybrid Splitter

Procedure

  1. Perform LOTO on the PDM-RF power for the system. See the MR Service Safety Manual, PN 5452735.
  2. Make sure the scanner is idle. Select End Exam at any point in the scan process.
  3. Remove the lower side cover and upper magnet side cover to access the body hybrid module.

    Figure 1. Removing Upper Magnet Side Cover

  4. Remove all connections to the body hybrid assembly.
  5. Loosen the 4 screws on the bottom clamp brackets that secure the body hybrid to the magnet. Remove the 4 screws and 2 clamp brackets that secure the top of the body hybrid to the magnet.

    Figure 2. 1.5T Body Hybrid Module

    • caution
    • Strong Magnetic Field!
    • The module has no ferrous material and is not attracted to the magnet, but eddy currents set up by the strong magnetic field interacting with the body hybrid module can make it very hard to handle.
    • When removing and or replacing the body hybrid module from the side of the magnet, keep the module as far away from the magnet as possible.
  6. Remove the module from the magnet room, and keep it as far away from the magnet as possible.

Installing Body Hybrid Module

Procedure

    • caution
    • Strong Magnetic Field!
    • The module has no ferrous material and is not attracted to the magnet, but eddy currents set up by the strong magnetic field interacting with the body hybrid module can make it very hard to handle.
    • When removing and or replacing the body hybrid module from the side of the magnet, keep the module as far away from the magnet as possible.
  1. Move the module into the magnet room, and keep it as far away from the magnet as possible.
  2. Reconnect all cables to the body hybrid.
  3. Slide the body hybrid into position using the lower clamp brackets. Reinstall the upper clamp brackets with the 4 screws. Secure the module to the magnet by tightening all 8 screws. See Figure 2.
  4. Replace all covers in reverse order.
  5. Remove LOTO and reapply power to the system. See the latest revision of the MR Service Safety Manual, PN 5452735.