• Object ID: 00000018WIA300D1130GYZ
  • Topic ID: id_15271105 Version: 3.4
  • Date: Aug 10, 2020 2:51:11 PM

Front Cover Removal and Installation

Prerequisites

Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1-15 minutes for front cover; 30 minutes for GEM light strips15 minutes
Tools and test equipment
ItemQuantityPart numberManufacturer
Pair: Cut-Resistant Gloves1--
Nonmagnetic Titanium Service Tool Kit, Large Set15112581-
EPX Plus II Applicator15265376-
Mixing Nozzle, 3M Scotch-Weld EPX Applicator, 50 ml, PN 62-9154-9148-4 or Equivalent146-252065P154-
Consumables
ItemQuantityPart numberManufacturer
Plexus MA300 Adhesive, 50 ml15774729-
Adhesive Cable Tie Mount146-208747P1-
DV Light Assembly15766238-
5.6 inch Cable Tie146-208758P2-
Replacement parts
ItemQuantityPart numberManufacturer
Front Cover2See FRU manual-
Lighting Assembly2See FRU manual-
Table 1. Safety

About this task

Overview

This document contains the procedures for front cover removal and installation. The front covers consist of two halves and contain the emergency stop and control panels for the system.

Instructions for replacing the light strips are also included.

Preliminary

Procedure

  1. Turn off and perform LOTO on the RF and PEN cabinets. See the MR Service Safety Manual, PN 5452735.
  2. Undock the patient table and position the table away from the magnet.

Front Cover Removal

About this task

The type and order of the side cover removal depends on the components accessed. For left or right front cover removal, remove the corresponding side middle and side front covers first.

Procedure

  1. Remove the side covers (see Side and Top Cover Removal and Installation).
    Figure 1. Front Cover Screw Locations
    Note:

    Remove screws in the order listed. Screw locations shown above are approximate and may be hidden under unremoved components.

  2. Remove the left and right trim rings.
  3. Remove the bridge cover (4 screws).
  4. Remove the screw holding both front covers together and the bottom screw of each front cover from its bottom mounting.
  5. Remove the 2-paired covers (4 screws) on the back of the IRD to access a front cover screw behind the display (see Replace Operator Display, Control Panels, and Estop Button).
  6. Remove the screw located on top by the top cover (above the IRD) and the screw located below the IRD.
  7. Disassemble the operator control panel (OCP) and disconnect the cables (see Replace Operator Display, Control Panels, and Estop Button).
  8. Remove the 2 screws located behind the OCP.
  9. Note:

    Use care when moving the front covers:

    • Both left and right covers have the vertical light strips attached. Disconnect the power cord from each light before moving or replacing. See Vertical Light Strip Replacement.

    • The left front cover has the ambient room temperature sensor attached. Be careful of the sensor cable when setting cover aside. When replacing the left front cover, remove and reattach the ambient room temperature sensor. See Ambient Room and Bore Temperature Sensors Replacement.

    Remove the 2 screws holding the left or right front cover to the bracket mounted on the magnet, and set the covers aside.
  10. Reverse the instructions when replacing or reattaching the front covers. Ensure proper fit.

Vertical Light Strip Replacement

About this task

For left or right light strip removal, remove the corresponding side middle and side front covers.

Procedure

  1. Verify that LOTO is still in place and the patient table is undocked (see Preliminary).
  2. Remove the corresponding side covers. See Side and Top Cover Removal and Installation.
  3. Disconnect the power cord from the corresponding light strip.
    Figure 2. Disconnect the light strip power cord
  4. Remove the translucent light cover.
    Figure 3. Remove the translucent light cover
  5. Remove the clips holding the lights to the cover. Cut the wire ties on the back side holding the light strip wire and remove the light strip.
    Figure 4. Remove the clips
    Figure 5. Cut the wire tie holding the strip wire
    Note: If the current LEDs in the cover are already mounted to adhesive mounts, proceed to Step 10.
  6. CAUTION: Nitrile gloves must be worn when using alcohol wipes and glue.
    Assemble the glue gun applicator using the 1:1 plunger, following the manufacturer's instructions included in the box. Make sure to connect the glue and mixing nozzle to the applicator assembly.
    Figure 6. Glue gun with 1:1 plunger
    Figure 7. Assembled glue gun
  7. Clean the location where the adhesive mounts will be installed using the alcohol wipes provided in the FRU kit.
    Figure 8. Clean the LED groove
  8. Install the adhesive mounts into the LED groove. Make sure to install one at the top and one at the bottom of the cover, with the remaining 9 spaced approximately 200 mm apart in the LED groove. Placement is not critical, but should span the whole groove.
    Figure 9. Adhesive mount installation and placement
  9. Using the gun applicator, liberally apply glue to the vertical sides of the adhesive mounts. Wait until the glue is no longer tacky (approximately 10 minutes) before continuing to the next step.
    Note: It is critical that glue coverage does not extend outside of the LED groove, and that glue does not interfere with the slots for cable tie installation.
    Figure 10. Glue application
  10. Install the LED strip starting from the bottom to the top of the panel, pealing the backing off the LED strip (approximately 12 inches) to expose the adhesive tape, and continuing up the side as the LED strip is placed. Between adhesive mounts, make sure to press the LED onto the cover to eliminate any gaps.
    Figure 11. LED installation
  11. Loop the cable ties through the adhesive mounts, locking the LEDs in place.
    Figure 12. Cable tie installation
  12. Clip the excess from the cable ties.
    Figure 13. Clip excess cable tie
    Figure 14. Proper LED placement
  13. Replace and reconnect the light strip by reversing the above instructions. Ensure proper fit.

Finalization

Procedure

  1. Whenever the IRD or trackball control panels are disconnected and then reconnected, a TPS reset must be completed. (This is not necessary if the host computer is rebooted.)
  2. Check the functionality of the item replaced. Run the associated diagnostic, if necessary:

    • For the IRD: From the Common Service Desktop, select Diagnostics > Hardware Location > Magnet Room > In Room Display.

    • For the control panel: From the Common Service Desktop, select Diagnostics > Hardware Location > Magnet Room > SRI Functional Tests.