• Discovery MR750 3.0T System Service Methods
  • 5690009-2EN Revision 4
  • Object ID: 00000018WIA3066C030GYZ
  • Topic ID: id_12374589 Version: 1.8
  • Date: Jan 5, 2022 1:15:22 PM

Arm Board Hinge and Shoulder Screw Replacement

Prerequisites

Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1-90 minutes-
Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Non-Magnetic Service Tool Kit1-

5112581

-
Consumables
ItemQuantityEffectivityPart numberManufacturer
Loctite 242 (10 cc)1---
Replacement parts
ItemQuantityEffectivityPart numberManufacturer
Right Rear and Left Front Arm Board Hinge1-

See FRU Manual.

-
Left Rear and Right Front Arm Board Hinge1-

See FRU Manual.

-
Shoulder Screw, 1/4 in-20 x 1/2. ss 18–81-

See FRU Manual

-
Topic ID: id_SL3427206-1095831

Arm Board Hinge Replacement

Procedure

  1. Undock the Patient Table and remove table from the scan room to do work.
  2. Move the arm board on the table into the up position by squeezing the lever on the underside and lifting up. (Shown below.)
    Figure 1. Lifting Up Arm Board
  3. Remove the upper side covers nearest the hinge to be removed. (See Touch and Go Strip and Side Bumper Replacement.)
  4. Using the short tip Allen wrench (to access inner screw), remove two screws attaching the hinge to the arm board. (Shown below.)
    Figure 2. Two Upper Hinge Screws
  5. Using the short tip Allen wrench (to access inner screw), remove three screws attaching the hinge to the table. (Shown below.)
    Figure 3. Three Lower Hinge Screws
  6. Using a flathead screwdriver, remove the two screws from the lever mechanism cover under the arm board. (Shown below.)
    Figure 4. Lever Mechanism Screws
  7. Loosen the setscrew securing the cable to the lever mechanism and remove the cable to allow the hinge mechanism to be removed completely. (Shown below.)
    Figure 5. Lever Mechanism Cable
  8. Insert the new assembly through the arm board and thread the cable into the sheath and wrap as shown making sure that it is tight enough to actuate.
  9. Reattach the arm board hinge to the table with three lower hinge screws. (Shown below.)
    Figure 6. Three Lower Hinge Screws
  10. After applying a small amount of Loctite 242 to each upper hinge screw, reattach the arm board hinge to the attaching the arm board with the two upper hinge screws. (Shown below.)
    Figure 7. Two Upper Hinge Screws
  11. Check the functionality of the lever and make sure that the arm board can be moved up and down.
  12. Install the upper side covers nearest the hinge. (See Touch and Go Strip and Side Bumper Replacement.)
  13. Return table to scan room.
Topic ID: id_SL3427207-1095831

Arm Board Stop Shoulder Screw Replacement

Procedure

  1. Undock the Patient Table and remove it from the scan room to do work.
  2. Unscrew the Upper Left Rear Cover. This section removal requires unscrewing the section from both the bellows and the Table. (Shown below.)
    Figure 8. Table Covers
  3. Once unfastened, the Upper Left Rear Cover can be placed out of the way by sliding around handle. (Shown below.)
    Figure 9. Upper Cover Removal
  4. Locate the bumper shoulder screw and replace as needed. (Shown below.) Apply Loctite when reinstalling.
    Figure 10. Bumper Shoulder Screw
  5. Reverse the previous steps for reassembly.
Topic ID: id_15187677

Finalization

Finalization

Dock Table and make sure that it operates properly from Operator Console.