Test Equipment And Tools; Theory Of Operation; Maintenance Requirement; Preventive Maintenance Checks - ACR Electronics MS-2000(M) DISTRESS MARKER LIGHT (MILITARY) Product Support Manual

6.

Test Equipment and Tools

No special test equipment other than the TS-23/A Strobe Light Tester is required to test
the MS-2000(M) strobe light. If this tester is not available or functionally inoperative,
flash rate testing can be accomplished MANUALLY in accordance with procedures
outlined in paragraph 5.b.(1) except limit the test to two (2) minutes, counting the rate in
the last minute. Test equipment for the BA-3058/U battery is commercially available.
7.

Theory of Operation

All electrical circuitry comprising the MS-2000(M) strobe light is enclosed within its
main body case assembly. Briefly, these circuits operate to step up the battery voltage to
a level sufficient to fire the xenon flash tube. This stepped-up voltage is so timed that the
flash tube will fire between 40-60 flashes per minute.
8.

Maintenance Requirement

Since all electronic circuitry of the MS-2000(M) strobe is enclosed within its main body
case assembly and cannot be disassembled without destroying its integrity, preventive
maintenance requirements are limited to initial and periodic flash rate testing and visual
inspections. Battery preventive maintenance visual checks will be performed during
initial and periodic inspections of the light.
9.

Preventive Maintenance Checks

DO NOT PERFORM PREVENTIVE MAINTENANCE IN FLAMMABLE ATMOSPHERE
OR NEAR OPEN FLAME.
a. MS-2000(M)/ Distress Marker Light
(1)
(2)
(3)
(4)
(5)
(6)
b. BA-3058/U Battery (or equivalent) 1.5V, AA, Alkaline.
(1)
(2)
(3)
Check that the xenon flash tube lens is not cracked or discolored.
Check both the main body and flashguard shield cases for cracks or
excessive abrasions.
Check for full and free operations of both the IR and Blue light filters.
Check that the IR and Blue filters are not cracked and discolored.
Check that the light switch moves up and down freely.
Check that the battery wells are free of dust and are clean.
Check the battery case for cracks, swelling or leakage. Replace as
necessary.
Do not mix different battery brands.
Do not mix old and new batteries.
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Y1-03-0146 Rev. D