• SIGNA™ Hero 3.0T Service Methods
  • 5852800-8EN Revision 1.0
  • Object ID: 00000018WIA300AC230GYZ
  • Topic ID: id_15667360 Version: 1.21
  • Date: Oct 7, 2021 3:36:05 PM

RF Body Coil Replacement

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
3-4 hours -
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Authorized Personnel Floor Sign1-

2289812

-
Nonmagnetic Titanium Service Tool Kit, Large Set1-5112581-
Step Gauge 1-

-
Safety Glasses1-

-
Cut-Resistant Gloves1-

-
Safety Shoes1-

-
Small carpenter's level1-

-
Table 3. Consumables
ItemQuantityEffectivityPart numberManufacturer
Adhesive1-

46-220312P1

-
Anti-seize1-

2119594

-
Table 4. Replacement parts
ItemQuantityEffectivityPart numberManufacturer
Body Coil 1-

Refer to FRU manual

-
Table 5. Safety
Table 6. Required conditions
ConditionReferenceEffectivity

System Power must be turned OFF. Refer to LOTO for ISC.

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About this task

Use this procedure to replace the RF body coil.

Procedure

  1. Near the magnet room, open FRU Box.
    Note: Top Case will be used to locate the defective body coil.
    Figure 1. FRU Box
  2. Remove the front endbell. Refer to Removing the front endbell.
  3. Remove the rear endbell. Refer to Removing the rear endbell.
  4. If installed, remove the 1-piece bridge. Refer to Removing the 1-piece bridge.
  5. Disconnect the two (2) cooling air ducts at the rear end of the body coil.
    Figure 2. Disconnecting the cooling air ducts
  6. Disconnect the HART ID cable at the rear end of the body coil.
    Figure 3. Disconnecting the HART ID cable
  7. On the rear end of the magnet, disconnect the CH1 and CH2 drive cables from the RF body coil.
    Figure 4. Disconnecting the CH1 and CH2 drive cables
  8. Disconnect the bore light cable connectors. (Front End: 2 connectors, Rear End: 2 cables)
    Figure 5. Disconnecting the rear bore lights
    Figure 6. Disconnecting the front bore lights
  9. At rear end of the magnet, remove four M6 bolts and washers securing the RF body coil.
    Figure 7. Removing the M6 bolts and washers
  10. On the front end of the magnet, remove four M6 bolts and washers from the bases of RF coil centering assembly.
    Figure 8. Removing the RF coil centering assembly bolts
  11. Remove the air flow sensors and tape them to the magnet enclosure in a position that will not interfere with the body coil removal.
    Figure 9. Removing the air flow sensors
  12. From the front of the magnet, pull the body coil forward until the front end is outside the bore.
    Figure 10. Moving the body coil
  13. Remove the temperature sensor and attach it to the magnet enclosure with masking tape so it is out of the way of body coil removal.
    Figure 11. Removing the temperature sensor
  14. Remove the RF coil centering assemblies.
    Figure 12. Removing the body coil mount rear assembly
  15. Fully remove the RF body coil and place it inside the empty bottom half of the FRU case.
    Figure 13. Removing the RF body coil
  16. Partially slide the new RF body coil into the bore, leaving a section on the front outside the bore.
    Figure 14. Installing the RF body coil
  17. On the front end of the body coil, transfer the front RF coil centering assembly from the body coil being replaced to the new RF body coil.
    Figure 15. Transferring the coil centering assembly
  18. Restore the temperature sensor and tape.
  19. Secure the RF body coil with bolts and washers by reversing the order.
  20. Perform RF Body Coil Isolation. Refer to Body Coil Isolation.
  21. Restore the rear bridge support and secure with 5 screws.
    Figure 16. Installing the rear bridge support
  22. Reconnect the Hart ID cable.
    Figure 17. Reconnecting the HART ID cable
  23. On the rear of the RF body coil, reconnect the CH1 and CH2 drive cables.
    Figure 18. Reconnecting the CH1 and CH2 drive cables
  24. Reconnect the bore light cable connectors. (Front End: 2 connectors, Rear End: 2 cables)
    Figure 19. Reconnecting the rear bore light connections
    Figure 20. Reconnecting the front bore light connections
  25. Restore the air flow sensors.
    Figure 21. Restoring the air flow sensors
  26. Restore the two (2) cooling air ducts at the rear end of the body coil.
    Figure 22. Reconnecting the cooling air ducts
  27. Reconnect the CH1 and CH2 drive cables to the RF body coil.
    Figure 23. Reconnecting the CH1 and CH2 drive cables
  28. Restore the front endbell. Refer to Installing the front endbell.
  29. Restore the rear endbell. Refer to Installing the rear endbell.
  30. If installed on this model, restore the 1-piece bridge. Refer to Installing the 1-piece bridge.
  31. Restore the dockable table interface cover.
    Figure 24. Installing the dock interface cover
  32. Restore the right and left side covers.
    Figure 25. Installing the right and left side covers
  33. Restore the patient table.

Finalization

  1. Note: Required calibrations and functional checks after body coil replacement are done in the RF body coil tuning procedure, below.
    Remove LOTO. Refer to Removing LOTO - ISC.
  2. Perform Body Coil Tuning.
  3. Perform Dual Drive Quadrature Calibration. Refer to Dual drive quadrature tool.
  4. Return defective body coil in the FRU Box.

    Return unused dielectric materials in the FRU box with the defective RF body coil.