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Page Title:
Table 5-1. Troubleshooting Procedures - Continued |
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 TM 5-6350-264-14&P-2
NAVELEX EE181-AA-OMI-030/E121 RT1161 M9443
T.O. 31S9-2FSS9-1-2
Table 5-1. Troubleshooting Procedures - Continued i,
Trouble
Probable cause
Corrective action
2. (cont)
d. (cont)
(1)
To remove a transducer, discon-
nect transducer leads from PC
board; disconnect black ground
lead from PC board; and remove
screws holding PC board to
transducer mounts. Remove
PC board. Remove and keep
hardware that secures chassis to
mounting surface. Remove
enough conduit clamps to
swing Transceiver chassis away
from the mounting surface.
Remove screws that secure
transducer mounts to sides of
the chassis. From the rear of
the chassis remove screws that
secure the transducer mount to
the rear of the chassis. Remove
the transducer mount. Use a
7/8-inch (2.2-cm) rod, such as
a wooden dowel, to press against
the screened end of the trans-
ducer and press it out of the
mount. Remove and keep the
plastic washer. Disconnect
leads from rear of the transducer.
(2)
To install a transducer, match dot
color on transducer with dot
color on mount; blue for receive
and white for transmit. Put top
side of mount against a flat sur-
face, and align transducer with
underside of mount. Use heel
of hand to press transducer into
mount until shoulder around
bottom of transducer is flush
against bottom of mount. Use
a 7/8-inch (2.2-cm) rod, such as
a wooden dowel, to press plastic
washer down inside mount until
it is flat against screened end of
transducer. To match leads to
the transducers, note that the
transmit transducer (white dot)
requires 8-inch (20.5-cm) leads
and the receive transducer (blue
dot) requires 3 1/2-inch (8.9-cm)
leads. Ensure that transducer
5-10
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