Replacements
- Operator Workspace
- ISC (Integrated System Cabinet)
- ICC (Integrated Cooling Cabinet)
- Magnet Enclosure and Outer Electronics
  - Removing and installing the magnet enclosure covers
    Provides removal and installation instruction for all magnet enclosure covers.
  - Replacing the front endbell
    Removes the front endbell and installs a replacement endbell.
  - Replacing the rear endbell
    Removes the rear endbell and installs a replacement rear endbell.
  - Replacing the 1-piece bridge
    Replace the 1-piece bridge assembly.
  - Replacing the Dual Drive Transmit Receive Switch (DTRSW) and two-channel preamp
    Removal and installation instructions for replacing the Dual Drive Transmit Receive Switch (DTRSW) and two-channel preamp in the magnet outer electronics.
  - Replacing the DS Digitized Per Pin Remote Receiver (DPP RRx)
    Removal and installation instructions for replacing the DS Digitized Per Pin Remote Receiver (DPP RRx) in the magnet outer electronics.
  - Replacing the DS Digitized Per Pin (DPP) Receiver Distributor (Rx Dist)
    Removal and installation instructions for replacing the DS Digitized Per Pin (DPP) Receiver Distributor (Rx Dist) in the magnet outer electronics.
  - Replacing the table interface assembly
    Removal and installation instructions for replacing the table interface (TIF) assembly in the magnet outer electronics.
  - Replacing the Operator Control Panel (OCP) and the In-Room Display (IRD)
  - Replacing the IRD fiber optic cables
    The procedure for replacing the IRD fiber optic USB and DP cables.
  - Replacing the speaker
    Removes the speaker in the rear endbell and installs a replacement speaker.
  - Replacing the laser bracket assembly
    This procedure provides steps to replace the laser bracket assembly.
  - Replacing the bore light
    Removes a bore light from the body coil and installs a replacement bore light.
  - Replacing the RF body coil air flow sensor
    Replace the RF body coil air flow sensor.
  - Replacing the heat exchanger temperature sensor
    Follow this procedure to replace the heat exchanger temperature sensor.
  - Replacing the GE Illuminated Logo
    Removes the illuminated GE logo from the magnet front cover and installs a replacement logo.
  - Replacing the ambient temperature sensor
    Replacing an ambient temperature sensor is a complex process, which includes tasks to fulfill the required conditions as well as tasks for finalizing the installation after replacing the sensor.
  - Replacing the 1-pc bridge trim
    - Removing the rear bridge cover
      Remove the rear bridge cover from the rear bridge.
    - Removing the rear bridge inner cover
      Removes the rear bridge inner cover from the magnet enclosure.
    - Removing the 1-piece bridge
      Remove the 1-piece bridge assembly.
    - Replacing the 1-piece bridge trim
    - Installing the 1-piece bridge
      Install the 1-piece bridge assembly.
    - Installing the rear bridge inner cover
      Installs the rear bridge inner cover onto the magnet enclosure.
    - Installing the rear bridge cover
      Install the rear bridge cover onto the rear bridge.
    - Finalizing the 1-piece bridge replacement
      This procedure finalizes the 1-piece bridge replacement.
  - Body Coil Gap Foam Replacement
  - Body Coil Mount and Base Plate (Front) Replacement
  - Body Coil Mount and Base Plate (Rear) Replacement
- Coil Replacement
- Patient Table
- MDP
- Pen Panel

SIGNA™ Hero 3.0T Service Methods
5852800-8EN Revision 1.0
Object ID: 00000018WIA3071A760GYZ
Topic ID: id_2032351 Version: 1.13
Date: Jan 26, 2022 12:38:41 PM

Removing the 1-piece bridge

Prerequisites


Required conditions
Electrical Safety

Procedure

Shutting down the host computer.
Applying LOTO - ISC.
Undock the patient table and move it away from the magnet.
On the service end, remove the UTNS antenna assembly and retain the parts for installation on the replacement bridge.
1. Remove the nut securing the BNC adapter.
2. Remove the washer from the BNC adapter.
3. Remove the BNC adapter from the bracket.
Figure 1. UTNS antenna components
1 UTNS antenna
2 Nut
3 Washer
4 BNC adapter
On the underside of the bridge assembly, disconnect cable M3507 from the end of the travel switch connector.

Figure 2. Travel switch connector location
1 Travel switch connector
Remove the eight screw covers and eight screws (four on each end) securing the 1-piece bridge assembly.

Figure 3. Attachment locations
1 Patient end
2 Service end

With two people: on the service end, one person lifts the end of the bridge up until the rollers are clear of the edge of the bore. From the patient end, the second person pulls the 1-piece bridge forward until the rollers can rest on the rails.

CAUTION

Potential component damage

The rear wheels of the bridge may be damaged.

Do not pull the front bridge out of the bore until one person has lifted the rear of the bridge and the rollers can enter the bore without damage.

Figure 4. Lift the rollers onto the bore

On the patient end, with two people, remove the bridge assembly and carefully put it on the floor away from the magnet.
Figure 5. Removing the 1-pc bridge