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Figure 6-1. Alarm switch schematic diagram
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TM-5-6350-262-14-7 Switch Alarm Latching SA-1954( )/FSS-9(V) FSN-6350-228-2510 Manual
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Removal and Installation Instruction
TM 5-6350-262-14/7/NAVELEX 0967-466-0970/TO 31S9-4-28-1
CHAPTER 7
DIRECT SUPPORT (INTERMEDIATE) MAINTENANCE INSTRUCTIONS
Section I. GENERAL
alarm switch.  However, the performance standards
7-1. Scope.
contained in Section V may be used at periodic intervals
This chapter provides specific instructions for all
to check the ability of the alarm switch to perform its
maintenance  functions  authorized  direct  support
intended mission.
maintenance personnel by the maintenance allocation
chart (appendix BI Included is a description of controls
used by direct support maintenance personnel, a list of
7-3. Direct Support Controls
test  equipment  required  for  total  maintenance,
Two push button switches located under the alarm
troubleshooting and repair instructions, and performance
switch cover are used by maintenance personnel in
standards.
addition to the operator controls (para.
3-1) The
functions of reset switch S2 (8, fig. C-1) and tamper
switch S3 (13, fig. C-1) are described in paragraphs 6-4
7-2. Purpose.
and 6-5, respectively.
These maintenance instructions are primarily for
use following isolation of a J-SllDS malfunction to the
Section II. TOOLS AND EQUIPMENT
7-4. Standard Tools and Equipment
7-5. Special Tools and Equipment
Table 2-1 lists standard tools and test equipment
No special tools and equipment are required for direct
required for alarm switch maintenance.
support maintenance of the alarm switch.
Section III. TROUBLESHOOTING
procedures. The alarm switch schematic diagram, figure
7-6. Visual Inspection
6-1, shows sufficient test points to check voltage values
Before troubleshooting the alarm switch, make a
in  the  20-volt  dc  control  circuit  and  open/short
thorough visual inspection. Check wiring insulation and
impedance values in the two alarm circuits.
The
components for evidence of failure.  Check housing
volt/ohm meter listed in table 2-1 is recommended for
interior for presence of moisture and other foreign
making these checks while the alarm switch is
matter.
interconnected with system components. The location of
component parts is illustrated in figure C-1.
7-7. Troubleshooting.
Troubleshooting the alarm switch requires no special
Section IV. MAINTENANCE OF ALARM SWITCH
normally consist of replacement of defective components
7-8. Scope.
only.  Following shop repair, a complete performance
a. This section contains instructions for corrective
test should be performed in accordance with paragraph
maintenance of the alarm switch.
The extent of
maintenance  to  be  performed  by  direct  support
personnel is governed by the maintenance allocation
chart (appendix B) and allocation of parts (appendix C}
7-9. General Maintenance Instructions.
b. The information in this section supplements that in
section III (troubleshooting) and provides instructions for
a. In-Process Inspection.
During repair, inspect
correcting malfunctions detected during visual inspection
alarm switch after removal of parts for defects not visible
and performance testing.
when the unit is assembled.  Continue the inspection
c. Repair of the alarm switch will be performed either
during assembly to insure that parts are
at the installation site or at the repair facility, depending
upon the complexity of the task.  On-site repair will
7-1

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