Optima MR450w BASE 1.5T System Service Methods
5690012-2EN Revision 3
Object ID: 00000018WIA3066C030GYZ
Topic ID: id_12374589 Version: 1.7
Date: Jan 17, 2020 11:17:00 AM

Arm Board Hinge and Shoulder Screw Replacement

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	90 minutes	Not Applicable

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Non-Magnetic Service Tool Kit	1	-	5112581	-

Table 3. Consumables
Item	Quantity	Effectivity	Part number	Manufacturer
Loctite 242 (10 cc)	1	-	-	-

Table 4. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
Right Rear and Left Front Arm Board Hinge	1	-	See FRU Manual.	-
Left Rear and Right Front Arm Board Hinge	1	-	See FRU Manual.	-
Shoulder Screw, 1/4 in-20 x 1/2. ss 18–8	1	-	See FRU Manual	-

Arm Board Hinge Replacement

Procedure

Undock the Patient Table and remove table from the scan room to perform work.
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
Remove the upper side covers nearest the hinge to be removed. (See Touch and Go Strip and Side Bumper Replacement.)
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
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
Using a flathead screwdriver, remove the two screws from the lever mechanism cover under the arm board. (Shown below.)

Figure 4. Lever Mechanism Screws
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
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.
Reattach the arm board hinge to the table with three lower hinge screws. (Shown below.)

Figure 6. Three Lower Hinge Screws
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
Check the functionality of the lever and make sure that the arm board can be moved up and down.
Install the upper side covers nearest the hinge. (See Touch and Go Strip and Side Bumper Replacement.)
Return table to scan room.

Arm Board Stop Shoulder Screw Replacement

Procedure

Undock the Patient Table and remove it from the scan room to perform work.
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
Notice

Do not position cover in a manner that places stress on the plastic.
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
Locate the bumper shoulder screw and replace as needed. (Shown below.) Apply Loctite when reinstalling.

Figure 10. Bumper Shoulder Screw
Reverse the previous steps for reassembly.

Finalization

Dock Table and verify proper operation from Operator Console.