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
3. (Cont)
b.
Defective
a.
Set multimeter to dc volts. Connect positive
electronics
meter lead to TB2-3 and negative meter lead to
assembly.
TB2-2.
b.
If meter indicates 5 +0.5 vdc, replace the elec-
tronics assembly.
CAUTION
Inner enclosure is heavy. Use caution when removing
from outer enclosure.
(1) To remove electronics assembly, loosen
collar on connect 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 enclo-
sure out of the outer enclosure. Place
inner enclosure on bench. Remove screws,
lock washers, and washers and disconnect
connector J1 from P1. Remove electron-
ics assembly mounting screws from rear of
inner enclosure. Remove electronics
assembly.
(2) To install new electronics assembly, position
assembly on inner enclosure. Install mount-
ing 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
hole in rear of inner enclosure. Connect
wires that run from terminal boards to con-
duits. Align notch on P2 to J2. Lock metal
tabs together and tighten collar on con-
nector P2.
c.
Set multimeter to ac volts. Connect leads to P1-9
and P1-23.
d.
If meter indicates less than 1 vac, replace electro-
nics assembly.
5-21
