RadSeeker Stabilization Module Replacement

Press and hold ENTER button until display powers on (3 to 5 seconds).

Use NMT to perform this step.

It is recommended to backup the file structure, but not necessary.

At a minimum, the Calibration History file should be saved prior to performing this procedure.

The backup might take up to 30 minutes.

Press ENTER until the screen displays Shutting down.

Unclasp battery door. Open battery door. Use tab to pull battery. Close and reclasp battery door after removal.

Rotate RadSeeker to expose underside and bumpers.

Use small Phillips (PH1) screwdriver. Each bumper contains two (2) screws for a total of eight (8) screws. Retain screws within bumpers.

Use medium Phillips (PH2) screwdriver (or T4 Torx screwdriver if applicable). Retain screws.

Lift vertically. Rotate cover. Set cover down on same side as cable connection.

Use needle nose pliers. Pull connector directly away from circuit board.

Use needle nose pliers. Pull connector directly away from circuit board.

Use small Phillips (PH1) screwdriver. Retain screws.

Use very small Phillips (PH0) screwdriver. Retain screws, washers and dust cover.

Push in the tabs of the two (2) connectors with this feature.

Pull connectors directly away from circuit board. Set aside processor PCB.

Use medium Phillips (PH2) screwdriver. Retain screws.

Use small Phillips (PH1) screwdriver. Retain screws.

Carefully pry grommet off of mounting post.

Simultaneously lift the MCA and gamma detector and set aside.

Slide wire ties off of styrofoam surround. It might be necessary to compress the styrofoam to allow removal.  

The stabilization module will be on the top.

Use T6 Torx screwdriver. Retain screws.

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.

Use T6 Torx screwdriver.

There is a cutout for the stabilization module in one piece of the styrofoam casing.  

Place the detector assembly with the stabilization module facing down. The multi-channel analyzer should be facing up with the Symetrica logo visible.

Slide wire ties on to styrofoam casing.

Align wire ties with mounting tabs on bottom. Verify wire tie connection is offset from centerline so that detector assembly will fit into enclosure.

The detector is placed with the stabilization module facing down.

Secure grommet over mounting post using even pressure on both sides of the mounting grommet.

Use small Phillips (PH1) screwdriver.

Use medium Phillips (PH2) screwdriver.

Fit USB interface into chassis cutout, then lower in processor PCB.

Use very small Phillips (PH0) screwdriver.

Push connector directly toward circuit board.

Connector should click securely into place.

Avoid damage to the internal O-ring.

Enclosures should fit snugly together.

If available, use torque screwdriver set to 7 in-lbs. with medium Phillips (PH2) screwdriver bit.

Each foot and matching bumper should have identifying marks.

Use small Phillips (PH1) screwdriver. Each bumper contains two (2) screws for a total of eight (8) screws. Verify screws are secure.

Unclasp battery latch. Open battery latch. Reinsert battery.

Press and hold ENTER button until display powers on (3 to 5 seconds).

Use NMT to perform this step.

Update the Calibration History File with the current stabilization module replacement date.  

If a europium-152 (Eu-152) source is available, perform calibration procedure.

DET-HHD-SMD-RSK-CM03, RadSeeker Calibration

To perform an operational test, refer to

DET-HHD-SMD-RSK-RM01, RadSeeker Operational Test

Record observations, times, and results for the maintenance report.

As specified by management or contractual obligations.