HD T/R Quad Extremity Coil FRUs and Replacements

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Personnel Requirements


Required Persons	Procedure Timing
1	30 minutes

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Overview

This document contains the FRUs, additional accessories, and spare kit components for the HD T/R Quad Extremity Coil by Invivo. It also contains replacement procedures for the FRUs. The coil replacement procedures are the same for all the following:

(For curved table)
Catalog M3335ME 1.5T coil
(For flat table)
Catalog M7000FT 1.5T coil
(For curved table)
Catalog M3335LP 3.0T coil
(For flat table)
Catalog M7000GT 3.0T coil

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FRUs and Additional Accessories

The item numbers in the table refer to the FRU diagrams below.

Table 1. HD T/R Quad Extremity Coil FRUs
Item	Description	1.5T		3.0T
Item	Description	GE Part	Supplier Part	GE Part	Supplier Part
1	HD T/R Quad Extremity Assembly with Cable and Baseplate (for Curved Table)	5147225-2	870323	5147137-2	Invivo 4535-303-0519*
	HD Quad Extremity Coil Assembly with Cable and Baseplate (for Flat Table)	5406350-2	4535-303-0475*	5406653-2	4535-303-0518*
2	HD T/R Quad Extremity Cable Assembly	5147225-6	870290	5147225-6	870290
3	Coil Repair Kit I-3 (for Curved Table)	2357819-10	14234	2357819-10	14234
	Coil Repair Kit I-4 (for Flat Table)	5406350-10	4535-303-0343*	5406350-10	4535-303-0343*
4	Legacy Phantom	5147225-3	870326	5147225-3	870326
5	Phantom Positioner (Legacy and Unified)	5147225-7	870327	5147225-7	870327
6	Large Cylindrical Unified Phantom	5342679	-	5342679	-
7	Pad Kit, HD Quad Extremity Coil for Flat Table (includes Knee, Leg/Foot, Foot and Toe pads) Replacement pads are blue. Pads are customer-consumable components and not covered by any GE service contract. Bill the customer for replacement pads.	5406350-15	4535-303-0344*	5406350-15	4535-303-0344*
* The revision number appears as the last digit of the part number and replaces the asterisk (*).

Figure 1. FRU Diagram (for Curved Table)

Spare parts are listed below.

(For curved table) Refer to Table 2
(For the flat table) Refer to Table 3

The item numbers in the table refer to the spare part repair kit diagrams below.

Table 2. Contents of Spare Parts Kit (2357819-10) for Curved Table
Item	Description	Supplier Part	Qty
1	Draw Latch	20074P2	2
2	#6-32 x 0.438 FHMS, Brass	20117P25	4
3	Handle, Coil Lock	19711P1	2
4	Cover, Lock Handle	19712P1	2
5	#4-40 x 0.375 PHMS, Brass	20136P2	4
6	T-Bracket	19713P1	1
7	#10-32 x 0.375 PHMS, Brass	20136P14	3
8	Rubber Bumper	19727	4
9	#6-32 x 0.50 PHMS, Brass	20136P6	4

Figure 3. Spare Parts Repair Kit Diagram for Curved Table

Table 3. Contents of Spare Parts Kit (5406350-10) for Flat Table
Item	Quantity	Description	Supplier Part Number
10	2	Draw Latch	4535-301-8418*
20	2	Handle, Coil Lock	4535-301-8076*
30	2	Cover, Lock Handle	4535-301-8077*
40	1	T-Bracket	4535-301-8078*
50	2	Flat Table Foot	4535-302-9815*
60	4	Non-Skid Pads	4535-302-5665*
70	4	No. 6-32 x 0.438 FHMS, Brass Screws	4535-301-8603*
80	4	No. 4-40 x 0.375 PHMS, Brass Screws	4535-301-8643*
90	3	No. 10-32 x 0.375 PHMS, Brass Screws	4535-301-8637*
100	4	No. 6-32 x 0.50 PHMS, Brass Screws	4535-301-8658*
* The revision number appears as the last digit of the part number and replaces the asterisk (*).

Figure 4. Spare Parts Repair Kit Diagram for Flat Table

Topic ID: id_SL5080651-1061486

Tools and Test Equipment

(For cable replacement) 1 flat-head screwdriver for #6 size screws

(For mechanical components) 1 flat-head screwdriver for #4, 6, and 10 size screws

(For testing cable functionality) Digital multimeter

(For mechanical components) Loctite 222 (12-month shelf life), part 46-170683P1 (one 10 cc bottle)

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Cable Check and Replacement

Notice

To be performed by authorized Service Engineers only.

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Cable Continuity Check

Select the OHMMETER function on the digital multimeter (DMM).
Figure 5. HD System Connector (View from Cable End)
Using the DMM, verify continuity of the cable by performing the following operations on the system connector:
1. Continuity check from A1 to A2 pins
2. Continuity check from M9 to M10 pins
Remove six brass screws from the underside of the cable connect housing, and unplug the cable from PCB.
Access the reference points on the exposed interconnect PCB.

Perform continuity checks on the following reference points from the interconnect PCB to the system connector block.

From To
MC-1 C1
REF LOAD H3
TX F2
PA +10 VDC M3
MC BIAS J1
COIL ID M7
COIL ID RTN M8
- Flex the cable while checking to test for intermittent open and short conditions in the cable.
- If the cable fails any of the tests, replace the cable assembly by contacting GE Customer Service.
- If the cable passes the tests, plug the interconnect PCB back into the preamp PCB and replace underside with the six brass screws.

From	To
MC-1	C1
REF LOAD	H3
TX	F2
PA +10 VDC	M3
MC BIAS	J1
COIL ID	M7
COIL ID RTN	M8

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Cable Replacement Procedure

Remove the bottom screws of the extended housing.
Carefully remove the top cover and place to the side.
Unseat the cable from the cradle and carefully remove the small PCB with 20-pin connector from the large PCB.
Set the cable assembly aside.
Replace it with the new cable assembly, fully mating the 20-pin connector and socket.
Seat the cable assembly into the cradle, and replace the cover.
Ensure that the cable end sits level and upright.
Hand tighten the screws, and scan the coil to ensure proper assembly.
Figure 6. Cable Replacement

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Mechanical Parts Replacement

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Mechanical Hardware Check

Lift the coil locks on both sides of the coil, and slide the coil from side to side.

The coil must slide freely back and forth on the base with no binding or grinding.
Lock the coil in the center of the base. Check the bottom of the base to ensure the four rubber feet are tight.
Make sure that the coil latch is secure and that the base lock is fastened.

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Draw Latch Replacement

Remove #6-32 x 0.438 FHMS brass screws, quantity 2 (item #2) from the housing and replace the old draw latch with the new draw latch.
Use Loctite 222 on the brass screws. Insert them into the draw latch and hand tighten.
Hand tighten the brass screws.
Test the draw latch to ensure proper assembly.

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Handle and Cover: Coil Lock Replacement

Mate the new handle and cover pieces together, and fasten with #4-40 x 0.375 PHMS brass screws.
With both handle locks in the upright position, pry one side of the handle lock from the cradle on the side of the housing.
Use Loctite 222 on the brass screws. Replace the lock assembly with the new one, and secure with the screws.
Slide the old lock assembly from the T-bracket (item #6) and replace it with the new lock assembly.
Place one end of the lock assembly into the cradle of the housing and maneuver the other side into the cradle.
Test the lock mechanism to ensure proper assembly.

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T-Bracket Replacement

Remove the coil lock as instructed in Handle and Cover: Coil Lock Replacement and replace the T-bracket.
Replace the coil lock assembly as instructed in Handle and Cover: Coil Lock Replacement.
Test the lock mechanism to ensure proper assembly.

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Rubber Bumper Replacement

Remove #6-32 x 0.50 PHMS brass screw (item #9).
Replace the rubber bumper and tighten the brass screw.
Use Loctite 222 on the PHMS screws, replace the baseplate rail with the new one, and secure with the screws.
Cover the #6 PHMS screws with the new skid pads from the kit.