• Discovery MR750 3.0T System Service Methods
  • 5690009-2EN Revision 4
  • Object ID: 00000018WIA3087AE20GYZ
  • Topic ID: id_13105771 Version: 3.0
  • Date: Aug 29, 2019 1:34:37 AM

Front Cover Removal and Installation

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable15 (see Procedure Overview for details) minutes15 minutes
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Non-ferrous M5 Allen Wrench1---
Table 3. Replacement parts
ItemQuantityEffectivityPart numberManufacturer
Front Cover1---
Table 4. Safety

About this task

Removal of the front cover typically takes less than 15 minutes if the front end of the split bridge has already been removed. If this step has not been performed, it takes at least 90 minutes to remove and replace the front cover.

Note:

The front cover and the front end bell can be removed independently of each other.

Topic ID: id_SL1979229-1058188

Front Cover without In-Room Display

Procedure

  1. Follow all LOTO procedures for the PDU. See the MR Service Safety Manual, PN 5452735.
    Figure 1. Front Cosmetic Cover
  2. Undock the patient table, and position it away from the magnet.
  3. Remove the two M6 screws that secure the front bridge cover.
    Figure 2. Front Bridge Cover Screws
  4. Remove the front trim ring by pulling it away from the enclosure. There are no bolts holding it in place.
    Figure 3. Remove Trim Ring
  5. Remove the control panels.

    See Operator Display and Control Panels Replacement.

  6. Using an M5 Allen wrench, remove the 5 bolts that attach the front cover to the turtle bracket.
    Figure 4. Unbolting Front Cover
  7. After the 5 bolts have been removed, pull the front cover slightly away from the magnet and locate the Conquest Voltage Regular Board on the upper right side. Carefully remove JP1 from the board.
    Figure 5. Voltage Conquest Board on Back of Front Cover
  8. Remove the front cover. Make sure the microphone cable connected to the lower right side of the cover is not pulled.
    Figure 6. Microphone Cord Attached to Cover
  9. To free the front cover from the microphone cord, you can either disconnect it from the rear pedestal (connector J9 on the remote intercom board), or detach it from the front cover.

    See Operator Display and Control Panels Replacement.

  10. Reverse the above steps to install a replacement front cover.
Topic ID: id_SL1979230-1058188

Front Cover with In-Room Display

Procedure

  1. Follow all LOTO procedures for the PDU. See the MR Service Safety Manual, PN 5452735.
    Figure 7. In-Room Display Front Covers
  2. Undock the patient table, and position it away from the magnet.
  3. Remove the alignment laser light cover by unscrewing two screws. The cover is held in place by a popper on the lower left corner and snaps off.
    Figure 8. Remove Laser Light Cover
  4. Remove the two trim rings by pulling away from the enclosure. They are held in place by poppers.
    Figure 9. Remove Trim Ring
  5. Remove the two M6 screws that secure the front bridge cover. See Figure 2.
    Figure 10. Lower Cosmetic Cover Removed
  6. Remove the two control panel covers by unscrewing four screws per panel. The covers are also held on by poppers and Velcro.
    Note:

    Be careful of the trackball control panel connection cables.

    Figure 11. Unbolting Front Cover
  7. To free each front cover, disconnect the two cables that connect the control panel to the magnet.

    See Operator Display and Control Panels Replacement.

  8. Reverse the above steps to install a replacement front cover.
Topic ID: id_14957460

Finalization

Procedure

  1. If the in-room display or trackball control panels are disconnected and then reconnected, reboot the host PC.
  2. After reboot, from the Common Service Desktop, select Diagnostics > Hardware > Magnet Room > In-Room Display.

    The diagnostic displays the current status of the IRD and trackball connectivity. If the status is Not Installed, check the connections, reboot, and check the In-Room Display diagnostic again.