PRM-470 NHA-472 Board Replacement

Last Updated: 04/24/2025 1:35 AM

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

Title Type Status Last Updated
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
2548 - 205 - Disconnect charger; Remark:2547
Procedure Step
Published
08/02/2021 12:46 PM
205 - Disconnect charger
Instruction
Published
07/23/2021 2:42 PM
2547 - IO PRM-470 Remove Charger Cable
Remark
Published
11/02/2024 3:10 PM
397 - 313 - Power off instrument; Remark:398
Procedure Step
Published
06/11/2021 9:31 AM
313 - Power off instrument
Instruction
Published
07/23/2021 2:41 PM
398 - Press and hold the POWER button until instrument powers off....
Remark
Published
06/18/2021 6:02 PM
261 - 65 - Loosen four (4) cover screws; Remark:264
Procedure Step
Published
08/12/2021 7:25 AM
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
2734 - 266 - Locate battery connection; Remark:2733
Procedure Step
Published
08/18/2021 10:14 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
2733 - Battery connection is labeled 1.
Remark
Published
08/17/2021 3:23 PM
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
2737 - 2736 - Disconnect NHA-472 board wiring; Remark:2735
Procedure Step
Published
08/18/2021 10:15 PM
2736 - Disconnect NHA-472 board wiring
Instruction
Published
08/17/2021 3:39 PM
2735 - Remove connectors at locations 5, 6, and 7.
Remark
Published
08/17/2021 3:24 PM
2739 - 2738 - Remove faulty NHA-472; Remark:
Procedure Step
Published
08/18/2021 10:15 PM
2738 - Remove faulty NHA-472
Instruction
Published
08/12/2021 10:10 AM
2742 - 2741 - Locate NHA-472 board; Remark:2740
Procedure Step
Published
08/18/2021 10:16 PM
2741 - Locate NHA-472 board
Instruction
Published
08/12/2021 10:25 AM
2740 - PRM-470CGN Neutron high voltage board
Remark
Published
11/02/2024 6:01 PM
2745 - 2744 - Remove NHA-472 mounting nut; Remark:2743
Procedure Step
Published
08/19/2021 3:12 PM
2744 - Remove NHA-472 mounting nut
Instruction
Published
08/12/2021 10:27 AM
2743 - Removing the NHA-472 mounting nut
Remark
Published
11/02/2024 6:02 PM
2748 - 2747 - Remove NHA-472 board; Remark:2746
Procedure Step
Published
08/18/2021 10:16 PM
2747 - Remove NHA-472 board
Instruction
Published
08/12/2021 10:29 AM
2746 - Gently pry up each side and lift.
Remark
Published
08/17/2021 3:25 PM
2750 - 2749 - Install new NHA-472; Remark:
Procedure Step
Published
08/18/2021 10:17 PM
2749 - Install new NHA-472
Instruction
Published
08/12/2021 10:31 AM
2753 - 2752 - Mount new NHA-472; Remark:2751
Procedure Step
Published
08/18/2021 10:18 PM
2752 - Mount new NHA-472
Instruction
Published
08/12/2021 10:32 AM
2751 - Verify connectors are correctly aligned then press down.
Remark
Published
08/17/2021 3:26 PM
2756 - 2755 - Reinstall mounting nut; Remark:2754
Procedure Step
Published
08/18/2021 10:18 PM
504 - Caution : Do not overtighten the mounting nut.
Annotation
Published
10/04/2022 11:11 AM
2755 - Reinstall mounting nut
Instruction
Published
08/12/2021 10:34 AM
2754 - Reinstall NHA-472 mounting nut
Remark
Published
11/02/2024 6:03 PM
2758 - 2757 - Reconnect wiring; Remark:
Procedure Step
Published
08/18/2021 10:18 PM
2757 - Reconnect wiring
Instruction
Published
08/12/2021 10:35 AM
2761 - 2760 - Reconnect all connectors except battery; Remark:2759
Procedure Step
Published
08/18/2021 10:19 PM
2760 - Reconnect all connectors except battery
Instruction
Published
08/12/2021 10:37 AM
2759 - Do not connect location 1.
Remark
Published
08/17/2021 3:27 PM
2763 - 305 - Reconnect battery; Remark:2762
Procedure Step
Published
08/18/2021 10:19 PM
305 - Reconnect battery
Instruction
Published
07/29/2021 3:48 PM
2762 - Reconnect PRM-470 battery
Remark
Published
11/02/2024 6:05 PM
2766 - 2764 - Adjust neutron high voltage; Remark:
Procedure Step
Published
08/18/2021 10:19 PM
2765 - Note : The same circuit boards are used for both gamma and neutron detectors; howeve...
Annotation
Published
10/04/2022 11:13 AM
2764 - Adjust neutron high voltage
Instruction
Published
08/12/2021 10:38 AM
2770 - 2769 - Determine manufacturer of the neutron detector; Remark:2767
Procedure Step
Published
08/18/2021 10:20 PM
2769 - Determine manufacturer of the neutron detector
Instruction
Published
08/12/2021 10:39 AM
2767 - To access the neutron detector information, remove the moderator from the cas...
Remark
Published
08/17/2021 3:27 PM
2768 - Detector information is printed on the detector. There are two (2) common neu...
Remark
Published
06/18/2021 6:47 PM
2772 - 220 - Power on instrument; Remark:228
Procedure Step
Published
08/18/2021 10:20 PM
220 - Power on instrument
Instruction
Published
04/06/2025 7:00 PM
228 - Press POWER button until the display turns on.
Remark
Published
06/18/2021 6:29 PM
2777 - 2776 - Connect HV probe to DMM; Remark:2774
Procedure Step
Published
08/18/2021 10:21 PM
2776 - Connect HV probe to DMM
Instruction
Published
08/17/2021 3:40 PM
2774 - Use Fluke 80K-40 High Voltage Probe and Fluke 179 DMM. The GND tab should lin...
Remark
Published
08/17/2021 3:28 PM
2658 - 2566 - Switch DMM to DC voltage; Remark:2613
Procedure Step
Published
08/18/2021 10:21 PM
2566 - Switch DMM to DC voltage
Instruction
Published
08/11/2021 3:41 PM
2613 - IO Fluke DMM Dial DC Volt
Remark
Published
11/02/2024 3:15 PM
2785 - 2567 - Locate ground test point; Remark:2782
Procedure Step
Published
08/18/2021 10:21 PM
2567 - Locate ground test point
Instruction
Published
08/11/2021 3:42 PM
2782 - The neutron ground TP38 is located on the NHA-472 neutron board and might not...
Remark
Published
08/17/2021 3:29 PM
2790 - 2789 - Connect HV probe to ground; Remark:2787
Procedure Step
Published
08/19/2021 11:33 AM
2789 - Connect HV probe to ground
Instruction
Published
08/19/2021 11:28 AM
2787 - The ground connector for the HV probe may be directly connected to the ground...
Remark
Published
08/17/2021 3:30 PM
2788 - It may be easier to use a separate test lead (jumper wire) and connect the HV...
Remark
Published
08/17/2021 3:31 PM
2794 - 2792 - Locate high voltage test point; Remark:2791
Procedure Step
Published
08/18/2021 10:22 PM
2793 - Warning : The test point has high voltage. Only contact the test point with the high vo...
Annotation
Published
10/04/2022 11:20 AM
2792 - Locate high voltage test point
Instruction
Published
08/17/2021 3:41 PM
2791 - The neutron high voltage TP34 is located on the NHA-472 neutron board and mig...
Remark
Published
08/17/2021 3:32 PM
2797 - 2796 - Contact HV probe to test point; Remark:2795
Procedure Step
Published
08/19/2021 11:32 AM
2796 - Contact HV probe to test point
Instruction
Published
08/19/2021 11:30 AM
2795 - Contact TP34 (not labeled) with tip of red HV probe.
Remark
Published
08/17/2021 3:32 PM
2874 - 2873 - Locate neutron high voltage adjustment; Remark:2872
Procedure Step
Published
08/18/2021 10:23 PM
2873 - Locate neutron high voltage adjustment
Instruction
Published
08/17/2021 3:42 PM
2872 - R10 on the NHA-472 neutron board is used to adjust the high voltage for the n...
Remark
Published
08/17/2021 3:33 PM
2885 - 2881 - Adjust neutron high voltage; Remark:2875
Procedure Step
Published
08/18/2021 10:23 PM
2884 - Standard : High voltage for a GE Reuter-Stokes neutron detection is 990 Volts. High volt...
Annotation
Published
08/19/2021 11:25 AM
2881 - Adjust neutron high voltage
Instruction
Published
08/17/2021 3:43 PM
2875 - Use precision slotted (tweaker) screwdriver to adjust R10. The voltage should...
Remark
Published
08/17/2021 3:35 PM
2878 - The number indicated on the DMM must be multiplied by 1000 if the Fluke 80K-4...
Remark
Published
08/17/2021 3:35 PM
2889 - 2888 - Remove HV probe leads; Remark:
Procedure Step
Published
08/19/2021 11:31 AM
2888 - Remove HV probe leads
Instruction
Published
08/19/2021 11:31 AM
2893 - 2892 - Locate neutron stage 2 gain adjustment; Remark:2891
Procedure Step
Published
08/18/2021 10:24 PM
2892 - Locate neutron stage 2 gain adjustment
Instruction
Published
08/17/2021 4:05 PM
2891 - R17 on the NHA-472 neutron board is used to adjust the stage 2 gain.
Remark
Published
08/17/2021 3:36 PM
2896 - 2895 - Set stage 2 gain at maximum; Remark:2894
Procedure Step
Published
08/18/2021 10:24 PM
2895 - Set stage 2 gain at maximum
Instruction
Published
08/17/2021 4:05 PM
2894 - Use precision slotted (tweaker) screwdriver to rotate R17 10 full turns clock...
Remark
Published
08/17/2021 3:37 PM
303 - 302 - Reassemble instrument; Remark:
Procedure Step
Published
10/07/2022 1:49 PM
302 - Reassemble instrument
Instruction
Published
06/16/2021 11:28 PM
2898 - 307 - Replace front cover; Remark:2897
Procedure Step
Published
08/18/2021 10:24 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
2897 - Replace front cover - PRM470
Remark
Published
11/02/2024 6:06 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
30 minutes
Duration
Published
04/01/2020 11:35 AM
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
Warning
Annotation Type
Published
03/02/2020 3:25 PM
Standard
Annotation Type
Published
03/02/2020 3:25 PM
Technician 2
Skill Level
Published
04/09/2020 1:17 AM
Medium Phillips (PH2) screwdriver
Tools
Published
04/24/2020 4:40 PM
5-mm nut (1/4 inch) nut driver or socket (optional)
Tools
Published
03/21/2021 5:00 PM
Needle nose pliers
Tools
Published
05/06/2020 4:10 PM
Precision slotted (tweaker) screwdriver
Tools
Published
03/20/2021 6:23 PM
Fluke 179 Digital Multimeter (DMM)
Tools
Published
03/20/2021 6:27 PM
Fluke 80K-40 high voltage (HV) probe
Tools
Published
03/20/2021 6:23 PM
Mini Hook Test Leads (optional)
Tools
Published
03/21/2021 5:02 PM
PRM-470 Disconnect Charger Cable
படம்
Published
03/16/2021 1:39 AM
PRM-470_Partial_Power_Button_Red_Highlight.png
படம்
Published
06/18/2021 6:28 PM
PRM470_Remove_Screws_Top_Case
படம்
Published
05/08/2020 6:05 PM
PRM-470_di_CGN_open_00536
படம்
Published
02/19/2023 11:26 AM
PRM-470 connectors shows 1-7
படம்
Published
02/19/2023 11:22 AM
PRM-470_Disconnect_battery
படம்
Published
05/09/2020 8:40 PM
PRM-470 connectors shows 5-7
படம்
Published
03/16/2021 1:39 AM
PRM-470 locate neutron CB
படம்
Published
03/16/2021 1:39 AM
PRM-470 NHA-470 CB mounting nut
படம்
Published
03/16/2021 1:39 AM
PRM-470 remove NHA-472 1 of 3
படம்
Published
03/16/2021 1:39 AM
PRM-470 Remove NHA-472 2 of 3
படம்
Published
03/16/2021 1:39 AM
PRM-470 Remove NHA-472 3 of 3
படம்
Published
03/16/2021 1:39 AM
PRM-470 align NHA-472 connectors 1 of 2
படம்
Published
03/16/2021 1:39 AM
PRM-470 press NHA-472 connectors 2 of 2
படம்
Published
03/16/2021 1:39 AM
PRM-470 mount NHA-472 nut
படம்
Published
03/16/2021 1:39 AM
PRM-470 connectors shows 2-7
படம்
Published
02/19/2023 11:35 AM
PRM-470 connector shows 1 for battery
படம்
Published
03/16/2021 1:39 AM
PRM-470_Reconnect_battery
படம்
Published
05/10/2020 8:16 PM
PRM-470 Neutron sleeve remove 1
படம்
Published
03/16/2021 1:39 AM
PRM-470_di_ntube2_000532.png
படம்
Published
03/16/2021 1:39 AM
PRM-470 Neutron locate manufacturer
படம்
Published
03/16/2021 1:39 AM
Fluke DMM HV Probe connector
படம்
Published
03/16/2021 1:39 AM
Fluke DMM on DC Voltage Dial
படம்
Published
03/16/2021 1:39 AM
PRM-470 locate TP38 ground 1 of 4
படம்
Published
03/16/2021 1:39 AM
PRM-470 locate TP38 ground 2 of 4
படம்
Published
03/16/2021 1:39 AM
PRM-470 locate TP38 ground 3 of 4
படம்
Published
03/16/2021 1:39 AM
PRM-470 locate TP38 ground 4 of 4
படம்
Published
03/16/2021 1:39 AM
PRM-470 locate TP34 high voltage
படம்
Published
03/16/2021 1:39 AM
PRM-470 TP34 high voltage measure
படம்
Published
02/19/2023 11:45 AM
PRM-470 adjust R10 location
படம்
Published
02/19/2023 11:32 AM
PRM-470 adjust R10 twist
படம்
Published
03/16/2021 1:39 AM
Fluke DMM Display in HV Probe Multiplier
படம்
Published
03/16/2021 1:39 AM
PRM-470 adjust R17 location
படம்
Published
02/19/2023 11:40 AM
PRM-470 adjust R17 twist
படம்
Published
03/16/2021 1:39 AM
PRM-470_di_close_000508.png
படம்
Published
06/18/2021 6:08 PM
PRM-470_Tighten_4_cover_screws
படம்
Published
05/10/2020 8:22 PM