RPM SCA-775 Module Replacement | FRONTLINE Maintenance Tool

Last Updated: 04/24/2025 1:44 AM

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

Title	Type	Status	Last Updated
Rapiscan VM-250 Vehicle Monitor	Device	Published	10/14/2024 9:50 AM
Rapiscan PM-700 Pedestrian Monitor	Device	Published	06/20/2024 11:38 AM
Rapiscan TM-850 Rail Monitor	Device	Published	09/18/2024 10:28 AM
Rapiscan CM-267 Conveyor Monitor	Device	Published	06/27/2024 1:02 PM
7264 - 1401 - Establish Initial Conditions; Remark:	Procedure Step	Published	04/27/2023 7:00 PM
1401 - Establish Initial Conditions	Instruction	Published	09/30/2022 3:14 PM
7823 - 7592 - Inform system operators; Remark:	Procedure Step	Published	07/07/2023 10:54 PM
7592 - Inform system operators	Instruction	Published	06/29/2023 3:20 PM
7824 - 7676 - Brief system operators on expected work, duration, anticipated alarms, and fa...; Remark:7677	Procedure Step	Published	07/07/2023 10:55 PM
7676 - Brief system operators on expected work, duration, anticipated alarms, and fa...	Instruction	Published	07/01/2023 11:39 PM
7677 - Operators should expect numerous fault indications and alarms during procedur...	Remark	Published	07/02/2023 3:05 AM
7847 - 7594 - Close lane and set up barriers to establish a safety watch; Remark:7846	Procedure Step	Published	07/08/2023 11:41 PM
7678 - Warning : Traffic should temporarily be rerouted or halted during conduction of this pr...	Annotation	Published	07/03/2023 10:23 AM
7594 - Close lane and set up barriers to establish a safety watch	Instruction	Published	06/29/2023 3:28 PM
7846 - Orange safety cones (traffic control) or equivalent per site-specific safety ...	Remark	Published	07/08/2023 11:40 PM
7270 - 7235 - Power off RPM; Remark:7236	Procedure Step	Published	09/01/2023 7:57 PM
7235 - Power off RPM	Instruction	Published	04/24/2023 12:30 PM
7236 - Move LD-260 switch to OFF position. The PWR ON	Remark	Published	04/27/2023 4:25 PM
7850 - 7848 - Removal of SCA-775 Module; Remark:	Procedure Step	Published	07/08/2023 11:48 PM
7848 - Removal of SCA-775 Module	Instruction	Published	07/08/2023 11:45 PM
7852 - 7849 - Disconnect two cables on bottom of SCA-775 module; Remark:7851	Procedure Step	Published	07/08/2023 11:51 PM
7849 - Disconnect two cables on bottom of SCA-775 module	Instruction	Published	07/08/2023 11:46 PM
7851 - Connectors are disconnected by turning lock ring multiple times and then pull...	Remark	Published	07/08/2023 11:50 PM
7855 - 7853 - Disconnect all BNC and miniature high voltage (MHV) cables on top of SCA-775 ...; Remark:7854	Procedure Step	Published	07/08/2023 11:59 PM
7792 - Note : It is good engineering practice to ensure all cables and connectors are label...	Annotation	Published	07/07/2023 2:17 PM
7853 - Disconnect all BNC and miniature high voltage (MHV) cables on top of SCA-775 ...	Instruction	Published	07/08/2023 11:56 PM
7854 - BNC Connectors	Remark	Published	07/08/2023 11:58 PM
7857 - 7856 - Loosen screws in each corner (4) using medium Phillips screwdriver, and open ...; Remark:7797	Procedure Step	Published	07/09/2023 12:04 AM
7795 - Caution : If you rotate cover of the SCA-775 down without first pulling out from the bo...	Annotation	Published	07/07/2023 2:23 PM
7856 - Loosen screws in each corner (4) using medium Phillips screwdriver, and open ...	Instruction	Published	07/09/2023 12:01 AM
7797 - Normally the cover screws are captured and should not come out of cover. ...	Remark	Published	07/07/2023 2:34 PM
9467 - To prevent breaking the hinge on the module / door, once the retainer screws ...	Remark	Published	10/03/2023 3:32 PM
7861 - 7859 - Remove 4 mounting screws; Remark:7860	Procedure Step	Published	07/09/2023 12:12 AM
7858 - Note : Most replaceable bit type screwdrivers will be too large in diameter to fit i...	Annotation	Published	07/09/2023 12:06 AM
7859 - Remove 4 mounting screws	Instruction	Published	07/09/2023 12:07 AM
7860 - The screws to be removed are located in the bottom of the irregularly shaped ...	Remark	Published	07/09/2023 12:11 AM
7863 - 7862 - Remove SCA-775 module from back plate; Remark:	Procedure Step	Published	07/09/2023 12:15 AM
7862 - Remove SCA-775 module from back plate	Instruction	Published	07/09/2023 12:14 AM
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
7865 - 7864 - Install New SCA-775 Module; Remark:	Procedure Step	Published	07/09/2023 12:18 AM
7864 - Install New SCA-775 Module	Instruction	Published	07/09/2023 12:18 AM
7868 - 7866 - Reinstall all four corner screws to mount replacement module; Remark:7867	Procedure Step	Published	07/09/2023 12:23 AM
7866 - Reinstall all four corner screws to mount replacement module	Instruction	Published	07/09/2023 12:20 AM
7867 - Install all screws loosely at first to facillitate easy mounting, then gently...	Remark	Published	07/09/2023 12:22 AM
7879 - 7878 - Reattach two connectors on bottom of SCA-775 module; Remark:7870	Procedure Step	Published	07/09/2023 1:16 AM
7878 - Reattach two connectors on bottom of SCA-775 module	Instruction	Published	07/09/2023 1:15 AM
7870 - The cable connectors are different sizes and keyed so they cannot be reinstal...	Remark	Published	07/09/2023 12:26 AM
7874 - 7872 - Reconnect BNC and MHV cables on top of SCA-775 module; Remark:7873	Procedure Step	Published	07/09/2023 12:31 AM
7811 - Caution : Proper connection of cables is critical.	Annotation	Published	07/07/2023 9:48 PM
7872 - Reconnect BNC and MHV cables on top of SCA-775 module	Instruction	Published	07/09/2023 12:30 AM
7873 - Verify each cable is connected to the appropriate connector.	Remark	Published	07/09/2023 12:31 AM
7837 - 7814 - Close SCA-775 module cover and tighten 4 screws; Remark:7815	Procedure Step	Published	07/07/2023 11:09 PM
7814 - Close SCA-775 module cover and tighten 4 screws	Instruction	Published	07/07/2023 9:50 PM
7815 - If the follow-on alignment and functional compliance test procedures are to b...	Remark	Published	07/07/2023 9:52 PM
7280 - 7250 - Power on RPM; Remark:7251	Procedure Step	Published	04/27/2023 4:14 PM
7250 - Power on RPM	Instruction	Published	05/01/2023 8:31 AM
7251 - Move LD-260 switch to ON position. The LED PWR ON	Remark	Published	05/10/2023 3:14 PM
7281 - 7252 - Verify RPM start-up; Remark:7253	Procedure Step	Published	04/20/2025 3:26 PM
7252 - Verify RPM start-up	Instruction	Published	04/27/2023 2:23 PM
7253 - RPM will perform a power on self-test (POST) and collect a background radiati...	Remark	Published	05/10/2023 3:14 PM
7279 - 7249 - Return equipment to normal operating condition; Remark:	Procedure Step	Published	04/27/2023 4:13 PM
7249 - Return equipment to normal operating condition	Instruction	Published	04/08/2025 3:22 PM
7840 - 7816 - Perform electronic alignment; Remark:7817	Procedure Step	Published	07/07/2023 11:12 PM
7816 - Perform electronic alignment	Instruction	Published	07/07/2023 9:55 PM
7817 - DET-RPM-RAP-CM01, RPM Electronic Alignment Procedure.	Remark	Published	04/13/2025 5:55 PM
7842 - 7820 - Inform system operators upon completion of maintenance action; Remark:	Procedure Step	Published	07/07/2023 11:15 PM
7820 - Inform system operators upon completion of maintenance action	Instruction	Published	07/07/2023 10:02 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
Upon failure of SCA-775 module	Frequency	Published	07/09/2023 12:50 AM
Warning	Annotation Type	Published	03/02/2020 3:25 PM
Note	Annotation Type	Published	03/02/2020 3:25 PM
Caution	Annotation Type	Published	03/02/2020 3:24 PM
Technician 1	Skill Level	Published	05/14/2020 2:56 PM
Keys to access RPM	Replacement Parts	Published	04/27/2023 6:56 PM
Reflective safety vest if required	Replacement Parts	Published	06/20/2023 4:47 PM
safety glasses	Replacement Parts	Published	07/02/2023 4:48 PM
Ladder; 2 meters, 6 feet tall; non-conducting if required	Replacement Parts	Published	07/02/2023 4:48 PM
Traffic control cones or equivalent if required	Replacement Parts	Published	06/20/2023 4:47 PM
Phillips screwdriver, medium	Replacement Parts	Published	07/07/2023 11:39 PM
Phillips screwdriver, small with 80 to 100 mm long shaft	Replacement Parts	Published	07/09/2023 1:06 AM
LD-260 Disconnect Switch Power Off	Image	Published	04/24/2023 12:49 PM
SCA-775 Two Connectors	Image	Published	07/08/2023 11:48 PM
SCA-775 BNC Connectors	Image	Published	07/08/2023 11:57 PM
Remove Six (6) Cover Screws	Image	Published	07/07/2023 2:27 PM
Cover screws are captured	Image	Published	10/04/2023 3:01 PM
To prevent breaking the hinge	Image	Published	10/04/2023 3:02 PM
SCA-775 Screw Sockets	Image	Published	07/09/2023 12:09 AM
LD-260 Disconnect Switch Power On	Image	Published	05/04/2023 3:37 PM

DET-RPM-RAP-CM08

Replace SCA-775 Single Channel Analyzer (SCA) Module.

Equipment Hierarchy

Rapiscan VM-250 Vehicle Monitor

Rapiscan PM-700 Pedestrian Monitor

Rapiscan TM-850 Rail Monitor

Rapiscan CM-267 Conveyor Monitor

Frequency

Upon failure of SCA-775 module

Technician Level

Technik 1

x 1

Duration

Length of time

Tools Required

Keys to access RPM

Reflective safety vest if required

safety glasses

Ladder; 2 meters, 6 feet tall; non-conducting if required

Traffic control cones or equivalent if required

Phillips screwdriver, medium

Phillips screwdriver, small with 80 to 100 mm long shaft

Materials Required

New SCA-775 module (TSA Part #9413)

Originators

Dave Alexander

Brian Tucker

Craig Stinson

Bailey Toon

Originating Organization

PNNL

Approver

Jamie Hughes

Safety Concerns

Electrical

Final Documentation

Corrective Maintenance Report

Departmental Coordination

Coordinate site access with system operators

Date of Origin

2016-09-08

Version

0.00

Príprava

Step 1

Main Step

7264 - 1401 - Establish Initial Conditions; Remark:

Step 00

1401 - Establish Initial Conditions

Establish Initial Conditions

7823 - 7592 - Inform system operators; Remark:

Step 00

7592 - Inform system operators

Inform system operators

7824 - 7676 - Brief system operators on expected work, duration, anticipated alarms, and fa...; Remark:7677

Step 00

7676 - Brief system operators on expected work, duration, anticipated alarms, and fa...

Brief system operators on expected work, duration, anticipated alarms, and fault indications before starting work

7677 - Operators should expect numerous fault indications and alarms during procedur...

Operators should expect numerous fault indications and alarms during procedure.

7847 - 7594 - Close lane and set up barriers to establish a safety watch; Remark:7846

7678 - Warning : Traffic should temporarily be rerouted or halted during conduction of this pr...

Type

Warning

Traffic should temporarily be rerouted or halted during conduction of this procedure to ensure maintenance provider safety and prevent unscreened conveyances from passing.

Step 00

7594 - Close lane and set up barriers to establish a safety watch

Close lane and set up barriers to establish a safety watch

7846 - Orange safety cones (traffic control) or equivalent per site-specific safety ...

Orange safety cones (traffic control) or equivalent per site-specific safety requirements.

7270 - 7235 - Power off RPM; Remark:7236

Step 00

7236 - Move LD-260 switch to OFF position. The PWR ON

Move LD-260 switch to OFF position. The PWR ON LED will turn off.

Prevádzka

Step 2

Main Step

7850 - 7848 - Removal of SCA-775 Module; Remark:

Step 00

7848 - Removal of SCA-775 Module

Removal of SCA-775 Module

7852 - 7849 - Disconnect two cables on bottom of SCA-775 module; Remark:7851

Step 00

7849 - Disconnect two cables on bottom of SCA-775 module

Disconnect two cables on bottom of SCA-775 module

7851 - Connectors are disconnected by turning lock ring multiple times and then pull...

Connectors are disconnected by turning lock ring multiple times and then pulling straight down.

7855 - 7853 - Disconnect all BNC and miniature high voltage (MHV) cables on top of SCA-775 ...; Remark:7854

7792 - Note : It is good engineering practice to ensure all cables and connectors are label...

Type

Note

It is good engineering practice to ensure all cables and connectors are labeled before disconnecting them.

Step 00

7853 - Disconnect all BNC and miniature high voltage (MHV) cables on top of SCA-775 ...

Disconnect all BNC and miniature high voltage (MHV) cables on top of SCA-775 module

7857 - 7856 - Loosen screws in each corner (4) using medium Phillips screwdriver, and open ...; Remark:7797

7795 - Caution : If you rotate cover of the SCA-775 down without first pulling out from the bo...

Type

Caution

If you rotate cover of the SCA-775 down without first pulling out from the box, the hinge will break.

Step 00

7856 - Loosen screws in each corner (4) using medium Phillips screwdriver, and open ...

Loosen screws in each corner (4) using medium Phillips screwdriver, and open SCA-775 controller module

7797 - Normally the cover screws are captured and should not come out of cover. ...

Normally the cover screws are captured and should not come out of cover.

9467 - To prevent breaking the hinge on the module / door, once the retainer screws ...

To prevent breaking the hinge on the module / door, once the retainer screws are loosened, take care to gently pull the bottom of the cover away from the module approximately ¼ʺ before letting the door open.

7861 - 7859 - Remove 4 mounting screws; Remark:7860

7858 - Note : Most replaceable bit type screwdrivers will be too large in diameter to fit i...

Type

Note

Most replaceable bit type screwdrivers will be too large in diameter to fit into the hole.

Step 00

7859 - Remove 4 mounting screws

Remove 4 mounting screws

7860 - The screws to be removed are located in the bottom of the irregularly shaped ...

The screws to be removed are located in the bottom of the irregularly shaped hole next to the round hole. Insert the long shaft small Phillips screwdriver into each of the four corner pockets and loosen/remove screws.

7863 - 7862 - Remove SCA-775 module from back plate; Remark:

Step 00

7862 - Remove SCA-775 module from back plate

Remove SCA-775 module from back plate

3397 - 3395 - Označte chybný komponent; Remark:3396

Step 00

3395 - Označte chybný komponent

Označte chybný komponent

3396 - Použite štítok alebo pásku. Uveďte dátum odstránenia, opis príznakov zlyhania, k...

Použite štítok alebo pásku. Uveďte dátum odstránenia, opis príznakov zlyhania, krajinu, miesto a číslo/počet jazdných pruhov. Majte k dispozícii časti príručky alebo zmluvné požiadavky NSDD.

Prevádzka

Step 3

Main Step