• SIGNA™ Hero 3.0T Service Methods
  • 5852800-8EN Revision 1.0
  • Object ID: 00000018WIA30B0C230GYZ
  • Topic ID: id_15667069 Version: 1.12
  • Date: Jul 13, 2021 4:27:37 PM

Gradient Filter Replacement

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable60 minutes15 minutes
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Non Magnetic Tool Set1---
Digital volt meter (DVM) with alligator clip leads1---
Hoist Service Kit1-

5196226

-
Adjustable wrench, 8 inch, titanium--

5109896-2

-
Table 3. Replacement parts
ItemQuantityEffectivityPart numberManufacturer
Gradient Filter 1-

Refer to FRU Manual

-
Table 4. Safety
Table 5. Required conditions
ConditionReferenceEffectivity

PDU must be turned OFF. Refer to ISC PDU Lockout / Tagout.

--

Procedure

  1. Remove left front cover per following steps.
    1. Open left front cover and remove a screw to disconnect GND cable.
    2. Unlock the cover.
    3. Lift up and remove the cover.
    Figure 1. Cover removal
    Note: If the service area is narrow, do the same for right front cover.
  2. Drain the coolant.　Refer to Draining Operation before replacing RF Amp, SSSA, or SSSPS.
  3. Disconnect the IN and OUT quick couplers of corresponding SSSA from the water manifold.
    Figure 2. Water Manifold Socket Order
    aRF Amp
    bSSSA (X)
    cSSSPS
    dSSSA (Y)
    eSSSA (Z)
  4. Connect the IN and OUT of quick coupler, and tie the hose as illustration.
    Figure 3. Quick coupler
  5. Set the Universal Lift Hoist onto ISC top.　Refer to Hoist Setup.
  6. Perform the following steps.
    1. Disconnect two connectors.
    2. Loosen six screws.
    3. Remove Leak sensor assy.
    Figure 4. Leak Sensor
  7. Loosen fixing screws and remove ISC PW Cover by lifting up a little.
    Note: If furnished closet door prevents from removing, the PW cover can be separated in two pieces by removing 6 screws at center.
    Figure 5. ISC PW Cover
  8. Remove Gradient Cable Cover per following steps.
    1. Loosen 12 screws.
    2. Lift up a little and remove the Gradient Cable Cover.
    Figure 6. Gradient Cable Cover
  9. Remove three Gradient Filter Covers by removing two screws per each cover.
    Figure 7. Gradient Filter Covers
  10. Perform the following steps.
    1. Disconnect Gradient Cable using 8 inch adjustable wrench.
    2. Remove 17 screws fixing G-Filter and Pen Panel.
    3. Fix G-Filter to SSSA using two connection screws.
    Figure 8. Gradient Filter Preparation
  11. Disconnect cables and Loosen 4 screws from SSSA.
    1. Disconnect the all connectors and terminals from front panel of SSSA.
    2. Loosen 4 screws tightening SSSA front panel to the chassis.
    3. Withdraw SSSA.
    Figure 9. Cables and 4 Screws
  12. Install the hoist brackets to the chassis of SSSA with 6 screws.
    Figure 10. Hoist Brackets
  13. Perform the following steps.
    1. Hook the winch and spreader bar from the hoist kit to the lifting bracket named “SSSA WITH FILTER”.
    2. Ratchet the winch to tighten the chain.
    3. Press the release tabs in on each side and remove the 2nd slide rail from 1st slide rail.
    Figure 11. Hoist Operation
  14. Push the rail slider into the cabinet before lowering.
  15. Use the hoist and slowly lower the SSSA Chassis to the floor.
    Note: When lowering the SSSA Chassis, it may be easier to rotate SSSA 90 degree as following illustration.
    Figure 12. Hoist Operation
  16. Remove gradient filter.
    1. Remove two screws.
    2. Slowly pull out Gradient Filter from SSSA.
    Figure 13. Remove Gradient Filter
  17. Install new Gradient Filter to SSSA and fix them with two screws.
  18. Install SSSA by reverse order of removal.
    Note: Make sure to connect all cables.

Finalization

  1. Restore the Power. Refer to Removing LOTO - ISC.
  2. Perform DQA II.
  3. Perform check scan.