• Topic ID: id_16157833
  • Version: 2.0
  • Date: Apr 9, 2020 8:47:18 PM

Home Flag and Sensor Board Assembly Replacement

Prerequisites

Overview

Procedure

  1. Move table to its lowest elevation.
  2. Remove gantry covers as required.

    Refer to Parts Replacement → Gantry → Enclosure → (Cover Removal Procedure).

    3. Notice Image
    • notice
    • Always turn OFF the HVDC before the 120 VAC. Turning OFF 120 VAC power before HVDC power can result in equipment damage.
  3. Turn OFF all three (3) service switches (Axial Drive, HVDC, 120VAC).

  5. Locate the home flag by rotating gantry. Replace if any damage is visible.
  6. Locate the Home Flag Sensor assembly. (See Figure 1.)
  7. Disconnect the harness.
  8. Remove the M6 screws attaching the bracket to the frame.

    Figure 1. Home Flag Sensor Assembly

  9. Replace Sensor Assembly and Home Flag as necessary.
  10. Slowly rotate gantry by hand and adjust flag position to pass through the center of the opto-sensor on the sensor board. Make sure the flag is parallel to the opto-sensor.
  11. Perform “Resetting the C-Pulse” (located in Align, Setup, Cals > Gantry folder).
  12. Reassemble gantry.

Finalization

  1. Perform Axial Home Flag Check, located in Axial Motion Checks.
  2. Perform System Scanning Test (located in Functional Checks > System folder).