• Topic ID: id_18480323
  • Version: 3.0
  • Date: Jan 20, 2020 8:33:05 PM

Liquid Bearing Tube IB One-Time Upgrade

Prerequisites

Overview

This document explains the procedure of Liquid Bearing Tube IB upgrade for Optima CT660. This manual refers some procedures that already released (i.e. LFC procedure, Tube replacement procedure, etc.). Refer to Optima CT660 Service Method (Gen.) CD-ROM (5366080-2EN rev.24 or later) in that cases.

There are two procedures. Two-Step upgrade procedure is used when LB Tube installation is done separately from Software upgrade and other hardware modification. One-Time upgrade procedure is used when both of Software upgrade, hardware modification and LB Tube installation are done at the same time.

System Requirement

Optima CT660 with following System software

  • 10HW33.8 with any Service Pack (a.k.a. Cj Phase1.5) → Requires Phase2.5 Upgrade kit.

  • 12HW28.8 with any Service Pack (a.k.a. Cj Phase2.5)

  • 14HW30.3 (a.k.a. Cj Phase2.5 SP4)

note:

This manual is for FMI26844 and the sites that are implemented FMI26844.

Flowchart

The following shows the flowchart used in this document.

Figure 1. Flowchart of One-Time Upgrade

Flowchart of One-Time Upgrade

Procedure

    Notice Image
    • notice
    • If the system software version is 10HW33.8 (with any Service Pack), need to upgrade using Cj Phase2.5 upgrade kit. The first step of Liquid Bearing Tube upgrade is LFC, and the software 15HW25.x should be used on Cj Phase2.5 upgrade procedure instead of provided software package.
  1. Check the HEMIT Tank part number. If it’s 2237336, 2237336-2 or 2237336-3, order HEMIT FRU 2246223-4 and replace HEMIT Tank. 2237336-4 or 2237336-5 are Optima CT660 HEMIT.
  2. Execute “Save Runtime Paraneter” from Generator Tool - JEDI.
  3. Execute LFC procedure. Refer to (15HW25.x) Load From Cold.
    note:

    Any Table/Gantry operation is not available from next step because of Tube config. mismatching until Step 9 of this section is done.

  4. Execute “reconfig” to change Tube type to Performix40 Plus (LB). Go to Hardware Tab and select Performix40 Plus (LB) from Tube type. Refer to the System Configuration - RIO.

    Figure 2. Screen capture of reconfig for Tube type.

  5. Perform Flash Download
    1. Using CSD > Utilities > Flash Download.
    2. Press “Update”.
    3. Once the Gantry Hardware Flash Downloads successfully, select [Dismiss].
  6. Replace Rotor B’d Replacement
    1. Remove Auxiliary Equipped.

      Refer to the following section of Optima CT660 Service method CD-ROM. Replacement > Gantry > High Voltage > Auxiliary Assembly Replacement

    2. Place the Auxiliary Box on a flat surface, then remove the front cover.
    3. Disconnect all cables to Rotor Control Board, unscrew all the screws, and remove the old Rotor Control Board. Be sure to remove screws and washers from heat sink also (see Figure 3).

      Figure 3. Old Rotor Control Board Removal

    4. Remove old thermal grease from groove.

      Figure 4. Thermal Grease Removal

      5. Notice Image
      • notice
      • The thermal conductivity grease should be applied evenly (see as below).
    5. Put on gloves and apply thermal conductivity grease (P/N 5134927) on IGBT heat sink of the new rotor board (P/N 5456518) (see Figure 5), then install the new rotor board to Auxiliary Box and re-connect cables.

      Figure 5. Rotor control Board IGBT Heat Sink

    6. Torque the two screws to the following final value.

      Figure 6. Rotor Control Board

    7. Re-install the front cover of Auxiliary Box.
    8. Install modified Auxiliary Equipped. Refer to the Auxiliary Assembly Replacement.
  7. Replace Stator cable (between Aux. Equipped J1 and HEMIT J1) with provided one (2381533-2 rev3 JEDI 60 DC STATOR CABLE-ROHS).

    Figure 7. Location of Aux. Equipped J1 and HEMIT J1

  8. Replace Anode HV Cable with provided one (5429083).
  9. Install the Performix40 Plus Tube. Refer to X-ray Tube Replacement.
  10. Checkout and update ProDiags schedule of InSite.
    1. note:

      Skip this step if Insite (Class M) software is not applicable. ( Class M Restricted Service Software applies only to GEHC personnel)

      Perform InSite checkout.
    2. Open command window, type "prodiags" and add new schedule of ProDiags for the following tasks.

      • PushLBTubeLog

      • PushJediLog

      Figure 8. Addition of new tasks.

    3. Update the task execution timing based on each site.
    4. Press “Apply” button and close the ProDiags window.
  11. Perform Save System State
    1. Using CSD > Utilities > System State.
    2. Insert DVD or USB memory and press “Save System State”.
    3. Press “Dismiss” when it’s completed.

Finalization

  1. Perform sanity scan with the following technique and confirm they completed successfully.

    Scout, Axial and Helical.

  2. Keep the original Anode HV Cable (5128609-11) at customer safe place in further use.
  3. Discard old Stator cable.
  4. Send the following information to Performix.Plus@ge.com

    • Liquid Bearing Tube serial number

    • LB Tube Installation date

    • LB Tube kAs

    • LB Tube exams

    • System ID