GOC Audio Assembly Replacement - New GOC

Prerequisites

Table 1 Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	15 minutes	30 minutes

Table 2 Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Phillips Screwdriver	1	-	-	-

Table 3 Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
GOC Audio Box	1	-	2395043 or 2395043-2	-

Table 4 Safety

FATAL ELECTRIC SHOCK HAZARD!
possible electric shock could cause bodily harm.
TO PREVENT FATAL ELECTRIC SHOCK, Shut down the Host computer and perform LOTO BEFORE STARTING THIS PROCEDURE. See the “mr service safety manual,” pn 5452735.

Table 5 Required conditions
Condition	Reference	Effectivity
The host computer and the GOC audio assembly must be powered off.	-	-

Perform LOTO on the PGR PDU/gradient subsystem. See the MR Service Safety Manual, PN 5452735.
note:
The PDU must be powered down completely to prevent damage to system electronics.

Remove the two screws that secure the right side panel, and lift the panel off to expose the GOC audio assembly (GOCAA).

Figure 1. Exposing GOC Audio Assembly

note:
Take care not to strain the short grounding lead that runs between the panel and the main chassis.

Figure 2. Ground Lead
Disconnect the power cord from the GOCAA.

Figure 3. Disconnecting Power Cord and Cables
Verify proper labeling before removing the cables connected to the GOCAA.

note:
Make sure to note the cable locations for reattachment.
Remove the four screws securing the audio box and remove it from the GOC frame.
Install the replacement audio box. Replace the four screws and reconnect all cables.
Reattach the GOC right side panel.

Remove LOTO from the PGR/PDU and apply power to the PDU. See the MR Service Safety Manual, PN 5452735.
Perform Intercom Adjustment for the newly installed GOC audio box.
Reboot the host computer.
Perform a scan.