PRM-470 PRCB-472 Board Replacement | FRONTLINE Maintenance Tool

Last Updated: 04/25/2025 1:34 AM

The following table lists all the components that make up the document.

Title	Type	Status	Last Updated
Rapiscan PRM-470 CG	Device	Published	10/28/2024 3:40 PM
Rapiscan PRM-470 CGN	Device	Published	10/28/2024 3:33 PM
247 - 257 - Prepare instrument; Remark:	Procedure Step	Published	04/11/2025 9:08 PM
257 - Prepare instrument	Instruction	Published	04/11/2025 9:07 PM
607 - 205 - Disconnect charger; Remark:	Procedure Step	Published	07/23/2021 2:42 PM
205 - Disconnect charger	Instruction	Published	07/23/2021 2:42 PM
260 - 313 - Power off instrument; Remark:	Procedure Step	Published	07/23/2021 2:43 PM
313 - Power off instrument	Instruction	Published	07/23/2021 2:41 PM
275 - 65 - Loosen four (4) cover screws; Remark:264	Procedure Step	Published	07/26/2021 12:42 PM
65 - Loosen four (4) cover screws	Instruction	Published	07/22/2021 12:38 PM
264 - Use a medium Phillips (PH2) screwdriver. Screws do not need to be completely ...	Remark	Published	07/20/2021 3:59 PM
263 - 262 - Remove instrument cover; Remark:413	Procedure Step	Published	08/11/2021 1:41 PM
2771 - Note : There are high-voltage detector circuit boards inside the instrument; however...	Annotation	Published	10/04/2022 11:06 AM
262 - Remove instrument cover	Instruction	Published	07/20/2021 3:35 PM
413 - PRM-470 Remove Instrument Cover	Remark	Published	11/01/2024 8:32 PM
276 - 266 - Locate battery connection; Remark:265	Procedure Step	Published	08/11/2021 3:07 PM
3033 - Note : PRM-470 CGN models have an additional board and connectors not shown in remar...	Annotation	Published	10/04/2022 11:07 AM
266 - Locate battery connection	Instruction	Published	07/20/2021 3:36 PM
265 - Battery connection is labeled 1.	Remark	Published	08/07/2021 11:16 AM
271 - 270 - Disconnect battery; Remark:414	Procedure Step	Published	08/11/2021 1:42 PM
1345 - Note : It is good practice to ensure all cables and connectors are labeled prior to ...	Annotation	Published	10/04/2022 11:08 AM
270 - Disconnect battery	Instruction	Published	07/20/2021 3:37 PM
414 - PRM-470_Disconnect_battery	Remark	Published	11/02/2024 1:21 PM
443 - 442 - Disconnect remaining connectors; Remark:	Procedure Step	Published	08/11/2021 1:43 PM
442 - Disconnect remaining connectors	Instruction	Published	07/22/2021 12:39 PM
3399 - 3398 - Uninstall GHA-472 board; Remark:	Procedure Step	Published	08/12/2021 7:16 AM
3398 - Uninstall GHA-472 board	Instruction	Published	08/07/2021 10:49 AM
478 - 476 - Remove mounting nut; Remark:477	Procedure Step	Published	08/11/2021 1:54 PM
476 - Remove mounting nut	Instruction	Published	08/07/2021 10:57 AM
477 - PRM-470 - Removing GHA-472 mounting nut	Remark	Published	11/02/2024 2:00 PM
481 - 479 - Remove GHA-472 board; Remark:480	Procedure Step	Published	08/11/2021 1:55 PM
479 - Remove GHA-472 board	Instruction	Published	07/22/2021 12:56 PM
480 - Gently pry up the GHA-472 board from the PRCB-472 board.	Remark	Published	07/22/2021 1:13 PM
618 - 615 - Uninstall PRCB-472 board; Remark:	Procedure Step	Published	08/12/2021 7:16 AM
615 - Uninstall PRCB-472 board	Instruction	Published	08/07/2021 11:00 AM
886 - 445 - Remove four (4) mounting screws; Remark:885	Procedure Step	Published	08/12/2021 7:19 AM
445 - Remove four (4) mounting screws	Instruction	Published	07/22/2021 12:41 PM
885 - Use a small Phillips (PH1) screwdriver. Retain screws.	Remark	Published	08/07/2021 11:18 AM
767 - 449 - Raise edge of PRCB-472 board to access underside; Remark:766	Procedure Step	Published	08/12/2021 7:19 AM
447 - Caution : Do not damage ribbon cable attached to the underside of PRCB-472.	Annotation	Published	10/04/2022 11:11 AM
449 - Raise edge of PRCB-472 board to access underside	Instruction	Published	07/22/2021 12:42 PM
766 - IO Lift PRCB-472 from PRM-470 cover No Gamma	Remark	Published	11/02/2024 3:40 PM
453 - 452 - Disconnect overlay button connector; Remark:451	Procedure Step	Published	08/11/2021 1:48 PM
452 - Disconnect overlay button connector	Instruction	Published	07/22/2021 12:43 PM
451 - PRM-470 Display circuit board	Remark	Published	11/02/2024 3:35 PM
3397 - 3395 - Label faulty component; Remark:3396	Procedure Step	Published	07/21/2024 6:59 AM
3395 - Label faulty component	Instruction	Published	08/07/2021 11:07 AM
3396 - Use tag or tape. Include date of removal, description of failure symptoms, co...	Remark	Published	08/09/2021 11:35 AM
645 - 644 - Install new PRCB-472 board; Remark:	Procedure Step	Published	08/12/2021 7:15 AM
644 - Install new PRCB-472 board	Instruction	Published	08/07/2021 11:08 AM
648 - 647 - Set LCD assembly in place; Remark:646	Procedure Step	Published	08/12/2021 7:14 AM
647 - Set LCD assembly in place	Instruction	Published	08/07/2021 11:09 AM
646 - The LEDs on either side of the display might need to be slightly spread apart...	Remark	Published	08/09/2021 11:36 AM
668 - 649 - Reinstall four (4) mounting screws; Remark:663	Procedure Step	Published	08/12/2021 7:14 AM
649 - Reinstall four (4) mounting screws	Instruction	Published	08/07/2021 11:10 AM
663 - Use a small Phillips (PH1) screwdriver.	Remark	Published	08/09/2021 11:37 AM
465 - 463 - Reconnect overlay button connector; Remark:464	Procedure Step	Published	08/11/2021 1:51 PM
462 - Caution : Correct placement of connectors and wiring is critical to proper operation.	Annotation	Published	09/28/2023 2:13 PM
463 - Reconnect overlay button connector	Instruction	Published	07/22/2021 12:50 PM
464 - PRM-470 - Connecting ribbon cable to overlay button connector	Remark	Published	11/02/2024 3:35 PM
768 - 468 - Set PRCB-472 board over mounting posts; Remark:765	Procedure Step	Published	08/12/2021 7:13 AM
468 - Set PRCB-472 board over mounting posts	Instruction	Published	07/22/2021 12:52 PM
765 - Position overlay ribbon cable to avoid catching between PRCB-472 and mounting...	Remark	Published	08/09/2021 11:59 AM
473 - 471 - Reinstall four (4) mounting screws; Remark:472	Procedure Step	Published	08/11/2021 1:53 PM
471 - Reinstall four (4) mounting screws	Instruction	Published	07/22/2021 12:53 PM
472 - Use a small Phillips (PH1) screwdriver.	Remark	Published	07/22/2021 1:13 PM
484 - 482 - Replace GHA-472 board; Remark:483	Procedure Step	Published	08/11/2021 1:55 PM
482 - Replace GHA-472 board	Instruction	Published	07/22/2021 12:56 PM
483 - Verify connectors are correctly aligned then press down.	Remark	Published	07/22/2021 1:14 PM
490 - 488 - Reinstall GHA-472 board mounting nut; Remark:489	Procedure Step	Published	08/11/2021 1:56 PM
504 - Caution : Do not overtighten the mounting nut.	Annotation	Published	10/04/2022 11:11 AM
488 - Reinstall GHA-472 board mounting nut	Instruction	Published	07/22/2021 12:57 PM
489 - PRM-470 - Location of GHA-472 mounting nut	Remark	Published	11/02/2024 2:01 PM
684 - 683 - Finish instrument assembly; Remark:	Procedure Step	Published	08/12/2021 7:13 AM
683 - Finish instrument assembly	Instruction	Published	08/07/2021 11:11 AM
500 - 498 - Reconnect all connectors except battery; Remark:499	Procedure Step	Published	08/11/2021 2:02 PM
498 - Reconnect all connectors except battery	Instruction	Published	07/22/2021 1:02 PM
499 - Do not connect location 1.	Remark	Published	07/22/2021 1:17 PM
503 - 305 - Reconnect battery; Remark:502	Procedure Step	Published	08/11/2021 2:03 PM
305 - Reconnect battery	Instruction	Published	07/29/2021 3:48 PM
502 - PRM-470 - Reconnect battery at position 1	Remark	Published	11/02/2024 3:36 PM
308 - 307 - Replace front cover; Remark:	Procedure Step	Published	08/11/2021 2:03 PM
304 - Caution : Ensure all wiring is inside the instrument while replacing cover.	Annotation	Published	10/04/2022 11:10 AM
307 - Replace front cover	Instruction	Published	07/20/2021 3:57 PM
310 - 309 - Tighten four (4) cover screws; Remark:417	Procedure Step	Published	08/11/2021 2:04 PM
569 - Caution : Do not overtighten screws.	Annotation	Published	06/16/2021 2:31 PM
309 - Tighten four (4) cover screws	Instruction	Published	07/22/2021 1:02 PM
417 - Use a medium Phillips (PH2) screwdriver.	Remark	Published	07/22/2021 1:18 PM
320 - 319 - Perform operational test; Remark:347	Procedure Step	Published	08/12/2021 7:12 AM
319 - Perform operational test	Instruction	Published	06/10/2021 8:31 PM
347 - Perform DET-HHD-RAP-RM01 PRM-470 Operational Test.	Remark	Published	07/21/2021 12:22 PM
322 - 321 - Document maintenance actions; Remark:	Procedure Step	Published	06/17/2021 9:49 AM
321 - Document maintenance actions	Instruction	Published	04/21/2025 11:19 AM
2869 - 2585 - Document maintenance performed; Remark:2866	Procedure Step	Published	06/18/2021 5:58 PM
2585 - Document maintenance performed	Instruction	Published	07/09/2021 12:15 PM
2866 - Record observations, times, and results for the maintenance report.	Remark	Published	04/21/2025 11:39 AM
4706 - 4705 - Submit report; Remark:4864	Procedure Step	Published	06/29/2022 9:50 AM
4705 - Submit report	Instruction	Published	06/29/2022 9:50 AM
4864 - As specified by management or contractual obligations.	Remark	Published	07/28/2022 1:36 PM
Corrective Maintenance Procedure	Document Type	Published	03/02/2020 3:32 PM
20 minutes	Duration	Published	05/18/2020 5:44 PM
As Needed	Frequency	Published	04/01/2020 11:36 AM
Note	Annotation Type	Published	03/02/2020 3:25 PM
Caution	Annotation Type	Published	03/02/2020 3:24 PM
Technician 2	Skill Level	Published	04/09/2020 1:17 AM
Medium Phillips (PH2) screwdriver	Tools	Published	04/24/2020 4:40 PM
Small Phillips (PH1) screwdriver	Tools	Published	05/14/2020 2:48 PM
5-mm (1/4 inch) nut driver or socket	Tools	Published	05/14/2020 3:21 PM
Needle nose pliers	Tools	Published	05/06/2020 4:10 PM
PRM470_Remove_Screws_Top_Case	Image	Published	05/08/2020 6:05 PM
PRM-470_di_CGN_open_00536	Image	Published	02/19/2023 11:26 AM
PRM470_Battery_connection_is_labeled_1	Image	Published	02/19/2023 10:40 AM
PRM-470_Disconnect_battery	Image	Published	05/09/2020 8:40 PM
PRM-470 - GHA-472 mounting nut location	Image	Published	02/19/2023 11:37 AM
PRM-470 - GHA-472 mounting nut removal	Image	Published	05/12/2020 1:29 PM
PRM-470 - Removing GHA-472 board	Image	Published	05/12/2020 1:40 PM
PRM-470_Re-install_four_mounting_screws_no_gamma	Image	Published	02/19/2023 11:10 AM
PRM-470_Raise_edge_of_PRCB-472_board_no_gamma	Image	Published	02/19/2023 11:12 AM
PRM-470 Remove ribbon cable from PRCB-472 LCD Functional	Image	Published	05/20/2020 10:03 AM
PRM-470 Install LCD assembly onto PRCB-472_with_Posts	Image	Published	05/20/2020 9:45 AM
PRM-470 - Remove four LCD assembly mounting screws_PRCB-472 side	Image	Published	05/15/2020 2:09 PM
PRM-470 - Connecting ribbon cable to overlay button connector	Image	Published	05/12/2020 12:56 PM
PRM-470_Set_PRCB-472_board_no_gamma	Image	Published	02/19/2023 11:16 AM
Remove metal brackets	Image	Published	09/08/2023 2:50 PM
Remove metal brackets 2	Image	Published	09/08/2023 2:51 PM
PRM-470 - Re-seating GHA-472 board	Image	Published	05/12/2020 1:47 PM
PRM-470 - Re-seating the GHA-472 board	Image	Published	05/12/2020 1:53 PM
PRM-470 - GHA-472 mounting nut location	Image	Published	05/12/2020 2:00 PM
PRM-470_Reconnect_battery	Image	Published	05/10/2020 8:16 PM
PRM-470_Tighten_4_cover_screws	Image	Published	05/10/2020 8:22 PM

DET-HHD-RAP-CM05

Replace PRCB-472 (main circuit board) in PRM-470.

Equipment Hierarchy

Rapiscan PRM-470 CG

Rapiscan PRM-470 CGN

Frequency

As Needed

Technician Level

Technician 2

x 1

Duration

Time increment

20 minutes

Length of time

Tools Required

Medium Phillips (PH2) screwdriver

Small Phillips (PH1) screwdriver

5-mm (1/4 inch) nut driver or socket

Needle nose pliers

Materials Required

PRCB-472 Board (Rapiscan part number 8673A)

PRM-470 Smart battery charger

Originators

Tucker, Brian

Originating Organization

PNNL

Approver

Cody Hostick

Safety Concerns

Electrical

Retest Requirements

PRM-470 Operational Test

Final Documentation

Corrective Maintenance Report

Departmental Coordination

Prior to arrival, notify operators concerning expected work and duration.

Date of Origin

2021-03-01

Version

0.00

Step 1

Main Step

247 - 257 - Prepare instrument; Remark:

Step 00

607 - 205 - Disconnect charger; Remark:

Step 00

260 - 313 - Power off instrument; Remark:

Step 00

275 - 65 - Loosen four (4) cover screws; Remark:264

Step 00

65 - Loosen four (4) cover screws

Loosen four (4) cover screws

264 - Use a medium Phillips (PH2) screwdriver. Screws do not need to be completely ...

Use a medium Phillips (PH2) screwdriver. Screws do not need to be completely removed.

263 - 262 - Remove instrument cover; Remark:413

2771 - Note : There are high-voltage detector circuit boards inside the instrument; however...

Type

Note

There are high-voltage detector circuit boards inside the instrument; however, they carry an extremely small current that does not pose a health risk.

Step 00

413 - PRM-470 Remove Instrument Cover

276 - 266 - Locate battery connection; Remark:265

3033 - Note : PRM-470 CGN models have an additional board and connectors not shown in remar...

Type

Note

PRM-470 CGN models have an additional board and connectors not shown in remark images.

Step 00

266 - Locate battery connection

Locate battery connection

265 - Battery connection is labeled 1.

Battery connection is labeled 1.

271 - 270 - Disconnect battery; Remark:414

1345 - Note : It is good practice to ensure all cables and connectors are labeled prior to ...

Type

Note

It is good practice to ensure all cables and connectors are labeled prior to disconnection.

Step 00

414 - PRM-470_Disconnect_battery

To disconnect battery, pull up on the battery wire connector on the master circuit board

443 - 442 - Disconnect remaining connectors; Remark:

Step 00

442 - Disconnect remaining connectors

Disconnect remaining connectors

Step 2

Main Step

3399 - 3398 - Uninstall GHA-472 board; Remark:

Step 00

3398 - Uninstall GHA-472 board

Uninstall GHA-472 board

478 - 476 - Remove mounting nut; Remark:477

Step 00

477 - PRM-470 - Removing GHA-472 mounting nut

481 - 479 - Remove GHA-472 board; Remark:480

Step 00

480 - Gently pry up the GHA-472 board from the PRCB-472 board.

Gently pry up the GHA-472 board from the PRCB-472 board.

Grip the edges of the GHA-472 board with thumb and forefinger, then gently pull up

Step 3

Main Step

618 - 615 - Uninstall PRCB-472 board; Remark:

Step 00

615 - Uninstall PRCB-472 board

Uninstall PRCB-472 board

886 - 445 - Remove four (4) mounting screws; Remark:885

Step 00

445 - Remove four (4) mounting screws

Remove four (4) mounting screws

885 - Use a small Phillips (PH1) screwdriver. Retain screws.

Use a small Phillips (PH1) screwdriver. Retain screws.

767 - 449 - Raise edge of PRCB-472 board to access underside; Remark:766

447 - Caution : Do not damage ribbon cable attached to the underside of PRCB-472.

Type

Caution

Do not damage ribbon cable attached to the underside of PRCB-472.

Step 00

449 - Raise edge of PRCB-472 board to access underside

Raise edge of PRCB-472 board to access underside

766 - IO Lift PRCB-472 from PRM-470 cover No Gamma

453 - 452 - Disconnect overlay button connector; Remark:451

Step 00

452 - Disconnect overlay button connector

Disconnect overlay button connector

451 - PRM-470 Display circuit board

Disconnect the ribbon cable from the overlay button connector

3397 - 3395 - Label faulty component; Remark:3396

Step 00

3396 - Use tag or tape. Include date of removal, description of failure symptoms, co...

Use tag or tape. Include date of removal, description of failure symptoms, country, site, and lane number. Dispose per Nuclear Smuggling Detection and Deterrence (NSDD) guidance or contractual requirements.

Step 4

Main Step