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Replacements
Patient Table
Replacing the dockable table string encoder
Removes the string encoder from the dockable table and installs a replacement encoder assembly.
Removing the dockable table string encoder
Removes the string encoder from the dockable table.

Replacements
- Operator Workspace
- ISC (Integrated System Cabinet)
- ICC (Integrated Cooling Cabinet)
- Magnet Enclosure and Outer Electronics
- Coil Replacement
- Patient Table
  - Removing and installing the dockable table covers
    Provides removal and installation instructions for all dockable patient table covers.
  - Replacing a dockable table armboard
    Removes the left- or right-hand armboard from the dockable table and installs a replacement armboard.
  - Replacing the patient table braking system components
    Replaces braking system components for the dockable patient table.
  - Replacing a dockable table cable assembly
    Removes the P1/PE or P2/P4 cable assembly from the dockable patient table and installs a replacement cable assembly.
  - Replacing a table caster
    Removes one of the caster assemblies from the table base and installs a replacement caster.
  - Replacing the cradle flipper assembly
    Replaces the cradle flipper assembly in a dockable patient table.
  - Replacing the dockable table cradle
    Replaces the bottom half of the dockable table cradle.
  - Replacing a dockable table cradle side wheel
    Removes a side wheel from the dockable table patient cradle and installs a replacement wheel.
  - Replacing a dockable table cradle vertical wheel
    Removes a vertically-oriented wheel from the dockable table patient cradle and installs a replacement wheel.
  - Replacing the table dock cables
    Replaces the dock cables for the dockable patient table.
  - Replacing table dock components
    Procedures for replacing field replaceable units contained within the table dock.
  - Replacing the dockable table dummy load
    Removes the dummy load from the dockable table and installs a replacement dummy load.
  - Replacing the egress switch and springs
    Removal and installation instructions for replacing the egress switch and springs.
  - Replacing table electrical docking mechanism components
    Removes table components related to electrical docking and installs replacement components.
  - Replacing the dockable table ElectroMagnetic (EM) clutch and belt
    Removes the ElectroMagnetic (EM) clutch and belt from the dockable table motor and EM clutch assembly, and installs a replacement clutch and belt.
  - Replacing the handle hinge
    Removes the handle hinge from the dockable table and installs a replacement hinge.
  - Replacing the hydraulic cylinder
    Removes the hydraulic cylinder from a dockable patient table and installs a replacement hydraulic cylinder.
  - Replacing the hydraulic filter
    Removal and installation instructions for replacing the hydraulic filter in the dockable patient table.
  - Replacing the hydraulic rotary pump
    Replaces the hydraulic rotary pump of the dockable patient table.
  - Checking and filling hydraulic fluid
    Checks and adjusts the hydraulic fluid level for the dockable patient table.
  - Replacing the dockable table motor
    Removes the longitudinal movement motor from the dockable table and installs a replacement motor.
  - Replacing the dockable table motor coupler
    Removes the rigibelt drive to motor coupler from the dockable table and installs a replacement coupler.
  - Replacing the dockable table Physiological Acquisition Controller (PAC)
    Replaces the Physiological Acquisition Controller (PAC) on the dockable table.
  - Replacing the dockable table Posterior Array (PA) coil
    Removes the Posterior Array (PA) coil from the dockable table cradle and installs a replacement coil.
  - Replacing the primary latch assembly
    Removes the primary latch assembly from the dockable table and installs a replacement primary latch assembly.
  - Replacing the reciprocating pump assembly
    Removes the reciprocating pump assembly from the dockable patient table and installs a replacement reciprocating pump assembly.
  - Replacing the respiratory connector or patient alert connector
    Provides instructions for replacing the respiratory connector or patient alert connector.
  - Replacing the dockable table rigibelt drive (actuator)
    Removes the rigibelt drive from the dockable table and installs a replacement drive.
  - Replacing the secondary latch actuating cable
  - Replacing the strain relief
    Removes the strain relief from the patient table handle-end cover and installs a replacement strain relief.
  - Replacing the dockable table string encoder
    Removes the string encoder from the dockable table and installs a replacement encoder assembly.
    - Removing the dockable table handle-end cradle cover
      Removes the cover from the handle-end of the dockable table cradle.
    - Removing the dockable table cradle hardtop cover
      Removes the hardtop cover from the dockable table cradle.
    - Lowering the dockable table bellows
      Detaches the dockable table bellows cover from the table side covers and lowers the bellows.
    - Removing the right-hand table side cover
      Removes the right-hand cover from the dockable table.
    - Removing the left-hand table side cover
      Removes the left-hand cover from the dockable table.
    - Removing the dockable table string encoder
      Removes the string encoder from the dockable table.
    - Installing the dockable table string encoder
      Installs the string encoder into the dockable table.
    - Installing the left-hand table side cover
      Installs the left-hand cover onto the dockable table.
    - Installing the right-hand table side cover
      Installs the right-hand cover onto the dockable table.
    - Raising the lowered dockable table bellows
      Raises a previously lowered dockable table bellows cover and attaches the bellows to the table side covers.
    - Installing the dockable table cradle hardtop cover
      Installs the hardtop cover onto the dockable table cradle.
    - Installing the dockable table handle-end cradle cover
      Installs the cover on the handle-end of the dockable table cradle.
    - Modifying the table encoder calibration value
      Configures the system with a new string encoder position sensitivity number.
    - Doing DQA calibration
      The DQA tool determines proper gradient polarity and proper gradient wiring by scanning a series of axial and coronal images of the DQA III phantom.
    - Doing the cradle motion test
      Makes sure the motion of the patient cradle into and out of the magnet bore is operating correctly.
    - Doing a check scan
      A check scan is done at the conclusion of many procedures. This functional check assures the unit is in good clinical working order.
  - Replacing a dockable table touch-and-go assembly or side bumper
    Provides instructions for replacing a touch-and-go assembly or a side bumper on the dockable table.
  - Replacing table undock mechanism components
    Removes the undock link and lever from the table base and installs replacement components.
- MDP
- Pen Panel

SIGNA™ Hero 3.0T Service Methods
5852800-8EN Revision 1.0
Object ID: 00000018WIA30AB1E40GYZ
Topic ID: id_2019682 Version: 2.3
Date: Apr 23, 2020 8:52:03 PM

Removing the dockable table string encoder

Prerequisites


Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	-	15 minutes	-


Tools and test equipment
Item	Quantity	Part number	Manufacturer
Nonmagnetic Titanium Service Tool Kit, Large Set	1	5112581	-


Required conditions
The cradle has been raised for service.
The left and right-hand table side covers are removed.

Safety

Warning

Ferrous material hazard

The dockable table string encoder assembly contains parts made with ferrous components. Holding this assembly too close to the magnet bore will forcibly attract it to the magnet.

To prevent possible bodily injury or damage to components, remove the assembly directly. Do not move it into the magnetic field more than is necessary.

About this task

Procedure

Move the table out of the scan room.
Remove the two screws and two washers securing the cradle to tabletop.

Figure 1. Cradle hardware
1 Screw
2 Washer
Press the dock pedal to bypass the primary latch and at the same time lift up and move the table away from the home position until you have access to the egress and encoder string cover.
Remove the three screws securing the string encoder cover plate to the tabletop.

Figure 2. String encoder cover plate
1 String encoder cover plate
2 Screw
Remove the cover plate from the tabletop.
Remove the screw securing the encoder ring to the rigibelt mounting block.

Figure 3. String encoder ring
1 Rigibelt mounting block
2 Screw
3 String encoder ring
4 String
Disconnect the string encoder connector from cable 5946423 string position enc connector.
Remove the three screws securing the encoder assembly to the table.

Figure 4. String encoder
1 String encoder
2 Screw
Remove the encoder assembly from the table.