• Discovery MR750w and SIGNA™ Architect T 3.0T System Service Methods
  • 5690002-2EN Revision 4
  • Object ID: 00000018WIA3065C030GYZ
  • Topic ID: id_12373462 Version: 1.4
  • Date: Oct 11, 2021 3:47:41 PM

16- or 32-Channel Reroute Box (RRB) Replacement

Prerequisites

Table 1. Personnel requirements
Required personsPreliminary requirementsProcedureFinalization
1Not Applicable30 minutes30 minutes
Table 2. Tools and test equipment
ItemQuantityEffectivityPart numberManufacturer
Non-magnetic Service Tool Kit1-

5112581

-
Table 3. Replacement parts
ItemQuantityEffectivityPart numberManufacturer
16-Channel Reroute Box1-

See FRU Manual

-
32-Channel Reroute Box1-

See FRU Manual

-
Table 4. Safety
Topic ID: id_SL1981037-1061255

Removing RRB

Procedure

  1. Perform LOTO on the PGR cabinet. See the MR Service Safety Manual, PN 5452735.
  2. Remove the side covers from the rear pedestal.
    Figure 1. Removing Side Covers
  3. Turn off the power switch on the power distribution board.
    Figure 2. Power Switch on Power Distribution Board
  4. Remove all cables connected to the RRB (top, side 1, and side 2). Record the cable locations and run numbers for reinstallation.
  5. Remove the four bolts holding the RRB to the rear pedestal.
    Figure 3. Reroute Box (Side 1 and 2)
  6. While carrying the RRB out of the magnet room, stay as far away from the magnet as possible.
Topic ID: id_SL1981044-1061255

Installing RRB

Procedure

  1. While carrying the new box into the magnet room, stay as far away from the magnet as possible.
  2. Install the four bolts to secure the RRB to the rear pedestal. (See Figure 3.)
  3. Install all cables previously connected to the RRB (top, side 1, and side 2).
Topic ID: id_15181119

Finalization

Procedure

  1. Turn on the power switch on the power distribution board (see Figure 2).
  2. Replace the side covers on the rear pedestal.
  3. Remove LOTO from the PGR cabinet. See the MR Service Safety Manual, PN 5452735.
  4. Perform a head and body test scan.