Last Updated: 06/27/2025 1:45 AM

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

Title Type Status Last Updated
8807 - Radiation Detection - Gamma
TS Flowchart
Published
06/25/2025 1:06 PM
9948 - 9945 - Restart RPM - Decision, Notes: 9946
Troubleshooting Element
Published
06/28/2024 12:22 PM
9946 - Restart the RPM by cycling the on/off switch on the LD-260
Remark
Published
10/19/2023 8:50 AM
8861 - Did this fix the Issue?
Remark
Published
09/25/2023 1:22 PM
1544 - 546 - Done - Complete, Notes: 547
Troubleshooting Element
Published
10/01/2020 7:23 PM
547 - Troubleshooting is complete.
Remark
Published
07/09/2021 7:45 PM
546 - Done
Troubleshoot Element Text
Published
07/09/2021 7:44 PM
9944 - 9941 - Measure discriminator voltages - Decision, Notes: 9942
Troubleshooting Element
Published
10/19/2023 8:47 AM
9942 - Use a digital multimeter to verify SCA-774 discriminator voltages are n...
Remark
Published
10/19/2023 8:47 AM
9943 - Are the ULD/LLD voltages correct?
Remark
Published
10/19/2023 8:47 AM
9940 - 9937 - Measure gamma high voltage - Decision, Notes: 9938
Troubleshooting Element
Published
10/19/2023 8:25 AM
9938 - Measure the HV on the MHV cable at both detectors using a digital multi-meter...
Remark
Published
10/19/2023 8:24 AM
9939 - Is the measured voltage significantly less than 900 VDC?
Remark
Published
10/19/2023 8:25 AM
11596 -
Remark
Published
06/25/2025 12:15 PM
9936 - 9933 - Adjust gamma high voltage - Decision, Notes: 9934
Troubleshooting Element
Published
10/19/2023 8:19 AM
9934 - Attempt to adjust gamma high voltage on the gamma HV-448/458 board R1 to +900...
Remark
Published
10/19/2023 8:17 AM
9935 - Is the gamma high voltage now approximately 900VDC?
Remark
Published
10/19/2023 8:18 AM
9932 - 9930 - Perform an Electronic Alignment - Formal Procedure, Notes: 9007
Troubleshooting Element
Published
10/19/2023 8:15 AM
9007 - Perform the following procedure:
Remark
Published
09/26/2023 1:23 PM
9931 - DET-RPM-RAP-CM01, RPM Electronic Alignment.
Remark
Published
10/19/2023 8:15 AM
9928 - 8168 - Did this fix the problem? - Decision, Notes:
Troubleshooting Element
Published
10/19/2023 8:12 AM
9923 - 9921 - Gently wiggle BNC connectors - Decision, Notes: 9922
Troubleshooting Element
Published
10/19/2023 8:10 AM
9922 - Gently wiggle the affected channel’s signal cable BNC connector where it is...
Remark
Published
10/19/2023 8:10 AM
9913 - Did the displayed count rate change?
Remark
Published
10/19/2023 8:00 AM
9098 - 9096 - Replace SCA-774 Board - Formal Procedure, Notes: 9007
Troubleshooting Element
Published
10/14/2024 11:52 AM
9097 - DET-RPM-RAP-CM07, SCA-774 RPM Single Channel Analyzer Board Replacement. ...
Remark
Published
09/27/2023 12:42 PM
9096 - Replace SCA-774 Board
Troubleshoot Element Text
Published
09/27/2023 12:40 PM
9914 - 9910 - Gently wiggle signal cable - Decision, Notes: 9911
Troubleshooting Element
Published
10/19/2023 8:00 AM
9911 - Gently wiggle the affected channel’s signal cable above the connector where...
Remark
Published
10/19/2023 7:59 AM
9912 - Gently wiggle the affected channel’s signal cable above the connector where...
Remark
Published
10/19/2023 7:59 AM
9892 - 9851 - Replace affected signal cable - Decision, Notes: 9852
Troubleshooting Element
Published
10/19/2023 7:51 AM
9852 - Replace the signal cable on the affected channel
Remark
Published
10/19/2023 7:15 AM
9889 - 9884 - Swap signal cables at SCA-774 board - Decision, Notes: 9885
Troubleshooting Element
Published
10/19/2023 7:46 AM
9885 - Navigate to SHOW COUNTS on the SC-770
Remark
Published
10/19/2023 7:44 AM
9886 - Navigate to SHOW COUNTS on the SC-770  
Remark
Published
10/19/2023 7:45 AM
9887 - While watching SHOW COUNTS, switch the BNC connectors for gamma CH1 and CH2 a...
Remark
Published
10/19/2023 7:46 AM
9888 - Did the fault indication move from the original channel to the other?
Remark
Published
10/19/2023 7:46 AM
9864 - 9861 - Replace VD-580 - Formal Procedure, Notes: 9862
Troubleshooting Element
Published
10/19/2023 7:29 AM
9862 - Perform the following procedure on the affected channel:
Remark
Published
10/19/2023 7:28 AM
9863 - DET-RPM-RAP-CM03, RPM VD-580 Replacement
Remark
Published
10/19/2023 7:29 AM
9858 - 8168 - Did this fix the problem? - Decision, Notes:
Troubleshooting Element
Published
10/19/2023 7:22 AM
9853 - 9851 - Replace affected signal cable - Decision, Notes: 9852
Troubleshooting Element
Published
10/19/2023 7:15 AM
9848 - 9846 - GH or GL? - Decision, Notes: 9847
Troubleshooting Element
Published
10/19/2023 7:10 AM
9847 - Is the fault indication on the affected channel HI or LO?
Remark
Published
10/19/2023 7:10 AM
9845 - 9843 - Light Leak? - Decision, Notes: 9844
Troubleshooting Element
Published
10/19/2023 7:05 AM
9844 - It is unlikely that the gamma detector would need to be replaced. Insp...
Remark
Published
10/19/2023 7:04 AM
9842 - 9840 - Replace gamma detector - Formal Procedure, Notes: 9007
Troubleshooting Element
Published
10/19/2023 7:00 AM
9841 - DET-RPM-RAP-CM22, Gamma Detector Assembly Replacement.
Remark
Published
10/19/2023 7:00 AM
8823 - 8168 - Did this fix the problem? - Decision, Notes:
Troubleshooting Element
Published
09/25/2023 12:14 PM
5882 - 545 - Contact Technical Support - Incomplete, Notes: 5881
Troubleshooting Element
Published
11/07/2022 10:02 AM
5881 - Troubleshooting incomplete. Contact technical support. Provide the ...
Remark
Published
11/07/2022 9:49 AM
545 - Contact Technical Support
Troubleshoot Element Text
Published
04/05/2021 12:00 PM
8168 - Did this fix the problem?
Troubleshoot Element Text
Published
08/25/2023 11:59 AM
9840 - Replace gamma detector
Troubleshoot Element Text
Published
10/19/2023 6:57 AM
9843 - Light Leak?
Troubleshoot Element Text
Published
10/19/2023 7:02 AM
9846 - GH or GL?
Troubleshoot Element Text
Published
10/19/2023 7:09 AM
9851 - Replace affected signal cable
Troubleshoot Element Text
Published
10/19/2023 7:13 AM
9861 - Replace VD-580
Troubleshoot Element Text
Published
10/19/2023 7:25 AM
9874 - 9869 - Swap SC-770 controller connectors - Decision, Notes: 7236
Troubleshooting Element
Published
10/19/2023 7:40 AM
7236 - Move LD-260 switch to OFF position. The PWR ON
Remark
Published
04/27/2023 4:25 PM
9870 - Switch the positions of the large 19-pin connectors on the bottom of the SC-7...
Remark
Published
10/19/2023 7:37 AM
7367 - Move LD-260 switch to ON position. The PWR ON
Remark
Published
05/11/2023 12:42 PM
9871 - Wait for controller to complete POST and obtain initial background
Remark
Published
10/19/2023 7:39 AM
9872 - Did the fault indication move from the original pillar (for example: DET 1/2 ...
Remark
Published
10/19/2023 7:40 AM
9095 - 9093 - Replace SC-771 Controller Board - Formal Procedure, Notes: 9007
Troubleshooting Element
Published
09/27/2023 12:36 PM
9094 - DET-RPM-RAP-CM09, RPM SC-771 Controller Board Replacement.
Remark
Published
09/27/2023 12:36 PM
9093 - Replace SC-771 Controller Board
Troubleshoot Element Text
Published
09/27/2023 12:34 PM
9869 - Swap SC-770 controller connectors
Troubleshoot Element Text
Published
10/19/2023 7:32 AM
9884 - Swap signal cables at SCA-774 board
Troubleshoot Element Text
Published
10/19/2023 7:42 AM
9910 - Gently wiggle signal cable
Troubleshoot Element Text
Published
10/19/2023 8:00 AM
9921 - Gently wiggle BNC connectors
Troubleshoot Element Text
Published
10/19/2023 8:09 AM
9930 - Perform an Electronic Alignment
Troubleshoot Element Text
Published
10/19/2023 8:14 AM
9857 - 9855 - Replace High Voltage Board - Formal Procedure, Notes: 9007
Troubleshooting Element
Published
10/19/2023 7:18 AM
9856 - DET-RPM-RAP-CM25, RPM HHV-448/458 High Voltage Board Replacement.
Remark
Published
10/19/2023 7:18 AM
9855 - Replace High Voltage Board
Troubleshoot Element Text
Published
10/19/2023 7:16 AM
9933 - Adjust gamma high voltage
Troubleshoot Element Text
Published
10/19/2023 8:16 AM
9937 - Measure gamma high voltage
Troubleshoot Element Text
Published
10/19/2023 8:23 AM
9905 - 9898 - Reset ULD/LLD - Decision, Notes: 9899
Troubleshooting Element
Published
10/19/2023 7:57 AM
9899 - Navigate to DSCR. ADJUST on the SC-770
Remark
Published
10/19/2023 7:54 AM
9900 - Press #Pre...
Remark
Published
10/19/2023 7:54 AM
9898 - Reset ULD/LLD
Troubleshoot Element Text
Published
10/19/2023 7:53 AM
9941 - Measure discriminator voltages
Troubleshoot Element Text
Published
10/19/2023 8:27 AM
9945 - Restart RPM
Troubleshoot Element Text
Published
06/28/2024 11:59 AM
11285 - Local gamma alarm indication on every occupancy
Troubleshoot Symptom
Published
10/14/2024 10:53 AM
11284 - Gamma alarm rate higher than normal
Troubleshoot Symptom
Published
10/14/2024 10:54 AM
Complete
Troubleshoot Step Type
Published
04/10/2020 12:12 AM
Formal Procedure
Troubleshoot Step Type
Published
04/10/2020 12:12 AM
Incomplete
Troubleshoot Step Type
Published
04/10/2020 12:13 AM
Decision
Troubleshoot Step Type
Published
04/10/2020 12:12 AM
LD-260 Disconnect Switch Power Off
படம்
Published
04/24/2023 12:49 PM
LD-260 Disconnect Switch Power On
படம்
Published
06/04/2025 1:28 PM
Do not display
Off
11285 - Local gamma alarm indication on every occupancy
11284 - Gamma alarm rate higher than normal
Percent Complete
100.00
Percent Complete W/Media
100.00