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
Trouble
Probable cause
Corrective action
3. (cont)
c. (cont)
the PC board. The meter indication
should increase a few volts.
c. If the meter indication does not in-
crease when one of the transducers
is disconnected, replace that trans-
ducer.
(1)
To remove a transducer, discon-
nect transducer leads from PC
board; disconnect black ground
lead from PC board; and remove
and keep 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 sur-
face. 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. Re-
move 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 transducer and press it out
of the mount. Remove and
keep the plastic washer. Dis-
connect leads from rear of the
transducer.
(2)
To install a transducer, match dot
color on transducer with dot
color on mount - blue for re-
ceive and white for transmit.
Put top side of mount against
a flat surface, and align trans-
ducer with underside of mount.
Use heel of hand to press trans-
ducer 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
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