TM 5-6350-264-14&P-9
NAVELEX EE 181-AA-OMI-100/E121 DZ-204
T.O. 31S9-2FSS9-1-9
Table 5-1. Troubleshooting Procedures - Continued
Trouble
Probable cause
Corrective action
2. (Cont)
e. (Cont)
into outer enclosure. Route wires through
hole in rear of inner enclosure. Connect
wires that run from terminal boards to con-
duits. Align notch on P2 with J2 and con-
nect P2 to J2. Lock metal tabs together and
tighten collar on connector P2.
f.
Poor ground
Set multimeter to ohms. Connect meter leads to each of
connections.
the following points:
TB2-2 to outer enclosure;
TB2-2 to TB3-3;
TB2-2 to P1-3, 4, 16, 17;
TB2-2 to battery negative lead.
If the multimeter indicates more than 0 ohms at any
of the above points, inspect wiring for broken or
loose connections, inspect plugs for bent or broken
pins, and inspect conduit for poor connections.
3. No alarms.
a.
Shorted or bro-
a.
Set multimeter to dc volts. Connect positive meter
ken wires,
lead to TB1-2 and negative meter lead to TB2-2.
loose con-
Ensure that an alarm condition is being presented
nections, or
by the Control Unit.
bent pins.
b.
If meter indicates 5 +0.5 vdc, turn power switch S3
to POWER OFF. Inspect wiring and Pi/J1 for
shorts, frayed wires, bent pins, or foreign materi-
al. P1-12, 13, and 24 carries 5 vdc, which is
shorted to P1-25 will not allow an alarm to be re-
ceived by the Audible Alarm.
c.
Set multimeter to ac volts. Connect leads to P1-9
and P1-23. If meter indicates 12 +2 vac, inspect
wiring from P1 to TB3 and T2 for broken wires,
loose connections, or bent pins.
d.
Connect meter leads to TB3-6 and TB3-7. If meter
indicates 18 ±2 vac, inspect wiring from T2 to
TB3 and speaker DS1.
5-20
