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CHAPTER 6 DIRECT SUPPORT (INTERMEDIATE) MAINTENANCE INSTRUCTIONS
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TM-5-6350-262-14-4 Sensor Magnetic Weapon DT-547( )/FSS-9(V) FSN 6350-228-2590 Manual
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Primary Batteries, Dry and Reserve Types
TM 5-6350-262-14/4
Section II. TROUBLESHOOTING
6-5. General
a.
Direct support (intermediate) level troubleshooting of the MWS will be accomplished on equipment that is in
a functional installation or in a bench test setup (para 6-19).
b.
The scope of direct support (intermediate) level troubleshooting is summarized in table 6-3. The
troubles,
probable causes, and corrective actions are arranged in accordance with the sequence of steps involved in the post-
installation functional checkout of the MWS (para 2-9 and 2-10)
6-6. Troubleshooting Tests
a.
Tests indicated in the troubleshooting chart are simple power (voltage) or continuity (resistance) checks.
b.
Use of a standard multimeter (voltohmmeter) or general purpose oscilloscope will facilitate fault isolation to
the authorized component level.
c.
If a voltohmmeter (or oscilloscope) is not available, suspect components must be replaced until proper
functional checkout results are obtained.
d.
Refer to paragraphs 2-9 and 2-10 for functional (performance test) procedures and to paragraph 6-19 for
bench test procedures.
e.
Refer to Section IV of this chapter for procedures involving use of a voltohmmeter or oscilloscope.
Table 6-3. Direct Support Intermediate) Troubleshooting Chart
Trouble
Problem cause
Corrective action
1. No tamper alarm
a. Battery (-ies) defective
a.  Test/Replace battery (-
ies)
b. PWB Assy defective
b. Replace PWB Assy
2 Continuo -'repetitive
a. Loop sensor improperly connected
a.
Check/Remake
connections
tamper alarm
b. Tamper switch improperly adjusted
b.
Check/Adjust tamper
switch
c. Defective EOL Module
c.
Test/Replace  EOL
Module
d. Defective loop sensor
d. Test/Replace loop sensor
wire
e. Defective input and filter assy
e. Test/Replace assy
f: Loose/broken electrical connection
f. Check, Repair wiring
g. No power from Control Unit
g. Test power input to SPU
h. Defective PWB Assy
h. Replace PWB Assy
3. No operational alarm
a. SENSITIVITY set too low
a. Adjust SENSITIVITY
b. Battery (-ies) defective
b.  Test/Replace battery (-
ies)
c. PWB Assy defective
c. Replace e PWB Assy
4 Continuoius/repetitive
a. Loop sensor movement
a.
Check secure loop
sensor
operational alarm
b. SENSITIVITY set too high
b. Adjust, SENSITIVITY
c. Defective PWB Amy
c. Replace PWB Assy
Section III. MAINTENANCE OF MAGNETIC WEAPON SYSTEM
6-7. General
a.
Repair of the MWS shall be limited to replacement of the following:
(1) Defective or depleted batteries.
(2) Defective EOL Module.
(3) Defective loop sensor.
(4) Defective Input and Filter Assembly.
(5) Defective PWB Assembly.
(6) Defective SPU enclosure (cover or chassis, or both).
b.
Other authorized repairs shall include:
(1) Resoldering of broken or defective wire solder connection.
(2)
Replacement of discrete defective hookup wire(s)
(3) Replacement of defective or missing screw fasteners
c.
Disposition of parts replaced will be in accordance with the applicable maintenance and recoverability codes in
6-8  Battery Replacement
Warning
Mercury battery cells characteristically undergo a severe thermal reaction if the terminal are
shorted for a sufficient period of time. This thermal reaction may result in an explosion that
would be hazardous to nearby personnel.
6-2

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