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. Defective
a. Turn on switch S3 on power supply. Set multimeter
electronics
to dc volts. Connect positive meter lead to TB2-1
assembly
and negative meter lead TB2-2. Meter should in-
or power
dicate less than 1 vdc.
b. If meter indicates 1 vdc or more 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
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.
c.
Set multimeter to dc volts. Connect positive meter lead to
TB2-3 and negative meter lead to TB2-2. Meter should
indicate 5 i0.5 vdc.
d. If meter indicates less than 1 vdc, connect positive meter
lead to P1-13 and negative meter lead to TB2-2.
5-7
