• SIGNA™ Hero 3.0T Service Methods
  • 5852800-8EN Revision 1.0
  • Object ID: 00000018WIA302DEE20GYZ
  • Topic ID: id_13106064 Version: 6.0
  • Date: Nov 9, 2020 11:39:03 AM

Laser Light Check and Alignment

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable15 minutes Not Applicable
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Non-Ferrous Allen Wrench Set1-

-
Non-Ferrous Flat Blade Screwdriver1-

-

About this task

This procedure describes Laser Light check and alignment. Axial laser light position is at 8mm away from Bridge end. And, cradle is used for adjustment jig.

Procedure

  1. Set the cradle as follows to use the cradle as alignment jig.
    1. Note: Laser light needs to be adjusted 8mm away from the Bridge end. In this step, joint of cradle end cover will be used as alignment line for laser adjustment.
      Move the cradle in so that the “Bridge edge” and “ “joint of cradle end cover” is aligned.
    2. Press [Landmark].
    3. Move the cradle out until 8 mm is shown.
      Note:

      S and I shown on the display changes according to the patient orientation (head first or feet first).

      Note: The right side panel is a mirror image of the left side. Out button is located at the far side from the Magnet bore.
    4. Press [Alignment] button on the control panel to turn on the laser light.
    Figure 1. Cradle preparation
  2. Check for proper alignment.

    • The axial light should align with the “joint of cradle”.

    • The sagittal light should align with the middle line of the cradle.

    If alignment is correct, you are done with this procedure. Otherwise, continue with the steps that follow.

    Note: “Joints of cradle end cover and cradle on each side” are now located at 8mm away from Bridge end.
    Figure 2. Proper Alignment
  3. For most of cover, Remove the two snap-in trim ring side sections.
    Figure 3. Trim Ring Side Sections
  4. For most of cover, Remove the laser light cover by removing two screws. Cover is held by two poppers and snaps off.
    Figure 4. Remove Laser Cover
  5. Change the positioning of the alignment lights by moving the joystick. Adjust the alignment via the joystick so that the axial light (x-axis) is aligned to the bridge and endcap joints on both sides of the bridge and the sagittal light (z-axis) is centered down the middle of the bridge. See Figure 2 for proper alignment.
    Note: There is only one joystick to adjust the laser light.
    Figure 5. Adjusting Laser Lights With Single Joystick
  6. Replace the laser light cover.
  7. Replace the trim ring as appropriate.

Finalization

  1. Perform DQA Calibration to calibrate isocenter following the instructions in DQA II Tool and Troubleshooting.
  2. If this is just an adjustment and no further calibrations are needed, then perform a SAVEINFO to save current system calibrations.