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
4. (Cont)
c.
Defective
a.
Set multimeter to ac volts. Connect leads to
electronics
P1-9 (+) and P1-23 (-).
assembly.
b.
If meter indicates less than 10 vac, replace the
electronics assembly.
CAUTION
Inner enclosure is heavy. Use caution when removing
from outer enclosure.
(1) To remove electronics assembly, loosen
collar on connector P2. Turn metal tab 90
degrees and disconnect P2 from J2. Tag and
disconnect wires that run from terminal
boards to conduit. Slide the inner enclosure
out of the outer enclosure. Place inner en-
closure on bench. Remove screws, lock
washers, and washers and disconnect con-
nector J1 from P1. Remove electronics
assembly mounting screws from rear of
of inner enclosure. Remove electronics
assembly.
(2) To install new electronics assembly, posi-
tion electronics assembly on inner enclo-
sure. Install mounting screws through
rear of inner enclosure. Connect J1 to P1
and install screws, lock washers, and
washers. Slide inner enclosure into outer
enclosure. Route wires through closure.
Connect wires that run from terminal
boards to conduits. Align notch on P2 to
J2. Connect P2 to J2. Lock metal tabs
together and tighten collar on connector P2.
d.
Broken wires,
a.
Set multimeter to ac volts. Connect leads to P1-9
loose con-
(+) and P1-23(-).
nections,
or bent
b.
If meter indicates 12 +2 vac, inspect wiring from
pins.
P1 to TB3 and T2 for broken wires, loose con-
nections, or bent pins.
c.
Connect leads to TB3-6 and TB3-7. If meter indi-
cates 18 +2 vac, inspect wiring from T2 to TB3
and the speaker.
5-26
