XFD Power Panel Assy

Prerequisites

Procedure

  1. Remove SC Front. Refer to SC Cover Removal
  2. Turn the SW1 to Discharge on front of XFD-PS.

    Figure 1. Discharge

    • caution
    • Wait 30 minutes to discharge the charge of Super Capacitor inside of XFD-PS.
  3. Wait for 30 minutes.
  4. Go to Magnet Room.
  5. Remove Cover for XFD Power Pannel Assy.

    Figure 2. Cover for XFD Power Pannel Assy.

  6. Check the voltage at each axis terminals (X, Y, Z) and confirm that there is no voltage. Refer to Figure 3 for voltage check point.
    note:

    Normally, the voltage of upper terminal will be 0 V after 30 minutes.

    For lower terminal, the voltage may exist in case of switch failure in XFD-PS and the charge of super capacitor cannot be discharged.

    If voltage exists in lower terminal, please check that SW1 of XFD-PS is turned to discharge position.

    If SW1 is at discharge position, waited for 30 minutes, and voltage still exists at lower terminal, consider to replace XFD-PS before replacing XFD Power Panel Assy.

    Figure 3. Voltage Check

  7. Remove defective XFD Power Pannel Assy.

    Figure 4. Cabinet Interface Board Cables

  8. Bring new XFD Power Pannel Assy and connect all the connectors to three XFAs and XFD-PS.
  9. Tighten all screws XFD Power Pannel Assy.
    note:

    Make sure to tighten each screw.

  10. Restore Cover for XFD Power Pannel Assy.
    note:

    To install cover, start screwing from the corner. Do not tighten until all screws are screwed in the screw holes. Finally tighten all screws.

  11. Turn the SW1 to OPERATION on front of XFD-PS.
  12. Restore Cabinet cover.