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
1. (Cont)
b.
(Cont)
e.
If meter indicates 5 +0.5 vdc, inspect wiring from TB2 to P1
for broken or loose connections. Repair or replace defective
wiring.
f.
If meter indicates less than 1 vdc, connect positive meter
lead to P1-24 and negative meter lead to TB2-2.
g.
If meter indicates less than 1 vdc, 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 enclosure on bench. Remove screws, lock
washers, and washers and disconnect connector J1 from P1.
Remove mounting screws from rear of inner enclosure and
remove electronics assembly.
(2) To install new electronics assembly, position assembly on
inner enclosure. 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 hole in rear of inner
enclosure. Connect wires that run from terminal boards to
conduits. Align notch on P2 with J2 and connect P2 to J2.
Lock metal tabs together and tighten collar on connector P2.
h.
Turn off switch S3 on power supply. Set the multi-meter to
ohms. Tag, remove, and isolate terminals of C15 and C16.
Set multimeter to ohms and connect
5-8
