SRI-4 (Scan Room Interface) Replacement

Prerequisites

Table 1 Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	30 minutes	5 minutes

Table 2 Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Non-ferrous 19 mm Hex Head Wrench	1	-	-	-

Table 3 Safety

Electrocution Hazard!
Dangerous Voltages are Present around the Magnet Enclosure and Rear Pedestal electronics.
Remove Power to The Magnet Enclosure and perform LOTO. See the MR Service Safety Manual, PN 5452735.

Overview

This procedure explains the replacement of the SRI (Scan Room Interface) assembly on a fixed site system.

Turn off power to the PDU. See the MR Service Safety Manual, PN 5452735, for information about LOTO on the PDU and gradient subsystem.
note:
The PDU must be powered down completely to prevent damage to system electronics.

The SRI is located under the left side of the magnet enclosure.

Figure 1. Location of SRI
Remove the left skirt covers Skirt Cover Removal and Install to expose the tray that holds the PAC and SRI.

Figure 2. SRI Tray
Disconnect the cables attached to the SRI.
The tray is held in place by one hex head screw on each slide. Remove the two screws and slide the tray out for access to the SRI board.

Figure 3. Screw Location
Velcro holds the SRI to the tray. Lift the SRI off the tray and remove it.

Place the new SRI in the proper location and install it by reversing the removal steps.
Reconnect the cables.
Slide the tray under the magnet and reinstall the two hex head screws.
Replace the enclosure trim panels.
Remove LOTO.
Restore power.

Perform a good bye scan. For Patient ID, use “test” to verify proper operation of coil ID.