ACR Electronics ms-2000(m) distress marker light (military) User Manual

Y1-03-0146 Rev. D 

6

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. 

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. 

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. 

a. 

MS-2000(M)/ Distress Marker Light 

(1) 

Check that the xenon flash tube lens is not cracked or discolored. 

(2) 

Check both the main body and flashguard shield cases for cracks or 
excessive abrasions. 

(3) 

Check for full and free operations of both the IR and Blue light filters. 

(4) 

Check that the IR and Blue filters are not cracked and discolored. 

(5) 

Check that the light switch moves up and down freely. 

(6)       Check that the battery wells are free of dust and are clean. 

 

b. 

BA-3058/U Battery (or equivalent) 1.5V, AA, Alkaline.  

(1) 

Check the battery case for cracks, swelling or leakage. Replace as 
necessary.  

(2)        Do not mix different battery brands. 

(3)        Do not mix old and new batteries.