Replacements
- Operator Workspace
  - Host T5820
  - Ethernet Switch Replacement
  - Replacing the Global Operator Cabinet Audio Assembly (GOCAA)
    Removal and installation instructions for replacing the Global Operator Cabinet Audio Assembly (GOCAA).
    - Electrical Safety
      You must follow all recommended safety procedures when servicing and working near energy sources.
    - Shutting down the host computer
      Shutting down the host computer shuts down the system safely and turns off the power to the host computer.
    - Applying LOTO - Global Operator Cabinet (GOC) and operator workspace
      Apply LOTO before servicing the GOC or items in the operator workspace. Applying LOTO ensures a safe environment when working on these items.
    - Removing the Global Operator Cabinet Audio Assembly (GOCAA)
    - Installing the Global Operator Cabinet Audio Assembly (GOCAA)
    - Removing LOTO - Global Operator Cabinet (GOC) and operator workspace
      Remove LOTO from the GOC and operator workspace before restoring power to these items.
    - Starting up the host computer
      How to start the host computer.
    - Completing the Global Operator Cabinet Audio Assembly (GOCAA) installation
      GOCAA install adjustment and final steps.
    - 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.
  - NEC LCD P241w Monitor Setting and Calibration
  - Replacing the temperature and humidity sensor
    Removes the temperature and humidity sensor from the Global Operator Cabinet (GOC) and installs a replacement sensor.
  - Replacing/Installing the SCIM, Keyboard and Mouse Replacement
  - Cabinet Power Switch Replacement
  - USB-Serial Converter Replacement
- ISC (Integrated System Cabinet)
- ICC (Integrated Cooling Cabinet)
- Magnet Enclosure and Outer Electronics
- Coil Replacement
- Patient Table
- MDP
- Pen Panel

SIGNA™ Hero 3.0T Service Methods
5852800-8EN Revision 1.0
Object ID: 00000018WIA30EE3B30GYZ
Topic ID: id_2012508 Version: 2.2
Date: Apr 23, 2020 8:43:10 PM

Removing the Global Operator Cabinet Audio Assembly (GOCAA)

Procedure

Remove the GOC service cover screws.

Figure 1. Remove the service cover and disconnect ground cable
1 Cover screws (2)
2 Service cover
3 Ground wire
Carefully lift the service cover up until the ground cable can be disconnected.
Lift the service cover until you have access to the ground wire. Do not apply pressure to the ground cable while lifting.
Disconnect the ground wire and fully remove the cover.
Remove all cables that are connected to the GOCAA.

Note: Make sure to note the cable locations for reattachment.
Loosen four screws securing the audio box to free it from GOC frame.

Figure 2. Loosen the four screws