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)
c.
Defective
a. Set multimeter to ac volts. Connect leads to TB3-6
audio output
and TB3-7.
transformer
T2.
b. If meter indicates less than 1 vac, replace audio
output transformer.
(1) To remove audio output transformer, note
length and location of transformer wires.
Disconnect wires. Remove mounting
screws and lock washers and remove
transformers.
(2) To install new transformer, cut transformer
wires to proper length and install crimp
terminals. Position transformer on inner
enclosure and install mounting screws and
lock washers. Connect wires to terminal
board.
d. Defective
a. Set multimeter to ac volts. Connect leads to
speaker.
TB3-6 and TB3-7.
b. If meter indicates 18 +2 vac replace speaker.
(1) To remove speaker loosen collar on connec-
tor P2. Turn metal tab 90 degrees and dis-
connect P2 from J2. Tag and disconnect
wires that run from terminal boards to con-
duit. Slide the inner enclosure out of the
outer enclosure. Place inner enclosure on
bench. Note length and location of
speaker wires. Disconnect wires from ter-
minal board. Remove mounting screws
from rear of enclosure and remove speaker.
(2) To install new speaker, cut speaker wires to
proper length and install crimp lugs. Posi-
tion speaker on inner enclosure. Install
mounting screws through rear of inner
enclosure. Connect wires to terminal
board.
e. Defective
a. Set the multimeter to ohms. Connect meter leads
tamper
to tamper switch terminals that have wires con-
switch.
nected. Depress the switch plunger. Meter
5-22
