TM 5-6350-262-14/6
NAVELEX 0967-LP-466-9062
TO 31S9-4-33-1
Section IV. MAINTENANCE OF AUDIBLE ALARM
5-10. Disassembly and Assembly
5-8.
Scope
a. General The following procedures must be
a. This section contains instructions for direct
performed to disassemble and assemble the audible
support maintenance checks and services and
alarm. Component locations and attaching parts are
corrective maintenance of the Audible Alarm. The
illustrated in figure C-1, appendix C. The audible alarm
extent of maintenance to be performed by direct support
wiring diagrams are shown in figures 5-1 and 5-2.
personnel is governed by the maintenance allocation
WARNING
chart (app B) and allocation of parts (app C).
b. The information in this section supplements that
Power to the JSIID systems must be
in Section III (troubleshooting) and provides instructions
shut down before any repairs or
for correcting malfunctions detected during visual
replacements can be performed on the
inspection and electrical checkout.
audible alarm if connected in system.
c. Repair of the audible alarm will be performed
(1) Place the POWER switch to OFF.
(2) Disconnect plug P2 (see fig. C-1) from
either at the installation site or at the repair facility
receptacle J2.
depending upon the complexity of the task. On-site
WARNING
repair will normally consist of replacement of defective
components only. Paragraphs 5-1 through 54 provide
A 115-volt ac potential may cause death
removal and replacement procedures for those items
under certain conditions; therefore,
requiring instructions in addition to the disassembly
reasonable precautions should be taken
sequence shown in the equipment exploded view (fig.C-
at all times.
(3) Disconnect the following JSIIDS power
interconnecting wiring.
Following shop repair, a
and interconnecting wiring from the following terminal
complete functional test should be performed in
boards.
accordance with paragraph 5-6.
Terminal
Function
5-9.
General Maintenance Instructions
L1-1 .......................................... 115-volt ac
L1-2 .......................................... 115-volt ac
a. In-Process Inspection.
During shop repair,
L1-3 .......................................... Ground
inspect audible alarm after removal of parts for defects
L2-1 .......................................... Alarm input
not visible when the unit is assembled. Continue the
L2-2 .......................................... Signal common
inspection during assembly to insure that parts are
L23 ........................................... Tamper output
properly assembled and that the unit will meet
(4) Insulate wire terminals removed from
performance standards. During the repair process,
terminals L1-1 and L1-2 as a precautionary measure.
inspect the audible alarm for the following:
(5) Remove connector P1 (10, fig. C-1) from
(1) Components for cleanliness.
connector receptacle J1 (on electronic assembly (11))
(2) Painted surfaces for deterioration or
by removing two screws (7), 2 lock washers (8) and two
scratches.
flat washers (9).
(3) Screws for damage or corroded threads.
Figure 5-1. Audible alarm wiring diagram
(4) Nuts and screw holes to insure they are
(Located in back of manual)
not stripped.
Figure 5-2. Audible alarm schematic diagram
(5) Components for breaks, chips, or cracks.
(Located in back of manual)
(6) Electrical wiring for fraying or other
5-11. Power Transformer Replacement
damage.
(7) All attaching and mounting hardware for
WARNING
tightness.
Power to the JSIID systems must be
b. Cleaning.
Parts shall be cleaned using
shut down before any repairs or
prescribed procedures utilizing a soft camel's hairbrush,
replacements can be performed on the
lint-free cloth, or vacuum cleaner with suitable
audible alarm if connected in system.
attachment to remove accumulated dust from
a. Removal
components within the audible alarm housing.
(1) Set POWER switch to OFF position.
c. Repair Precautions. Use standard maintenance
(2) Disconnect battery wires.
practices and observe the following precautions: (1)
(3) Disconnect the following wires from
Use exact replacement parts if possible; a part with
terminal TB3-1, TB3-2, TB3-3, L1-2 and from pin 4 of
same electrical value or function but different physical
switch S3 (see fig. 5-2).
size may cause trouble.
(4) Remove four mounting screws (29, fig.
(2) Soldering irons of less than 50 watts
C-1) and four washers (30).
should be used to solder this equipment. Overheating
of some parts may cause damage.
Change 2 5-3
