• Topic ID: id_23554267
  • Version: 1.0
  • Date: Oct 9, 2018 1:42:18 PM

JEDI PPC Board Replacement

Prerequisites

Overview

To replace JEDI PPC board:

  • Save JEDI runtime parameters, if possible

  • Replace PPC board

  • Restore JEDI runtime parameters, if previously saved

  • Check functionality of systems

  • Recalibrate

1 PPC Board Removal

Procedure

  1. If possible, save JEDI runtime parameters (from JEDI to console).
    • warning
    • Potential for Shock.
    • Voltage may be present.
    • Use proper lockout/tagout procedures before replacing components.
  2. Remove power to the gantry using proper Lockout / Tagout procedures.
  3. Remove gantry right side cover.
  4. Turn OFF all the three switches (AXIAL DRIVE ENABLE, HVDC ENABLE, 120 VAC) on the Service Switch Panel.
  5. Position the inverter assembly at 2 o'clock.
    6. Notice Image
    • notice
    • Do not drop screws into inverter. If you do, they must be removed or damage to the inverter will occur.
  6. Remove largest inverter cover.
  7. Attach a protective ESD wrist strap.
  8. Disconnect wires and remove the PPC board.

2 PPC Board Installation

Procedure

  1. Continue using the ESD wrist strap.
  2. Insert new PPC board and re-connect all wires.
  3. Replace the hex screws.
  4. Replace inverter cover.