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 TM 55-1905-242-14
UNIT MAINTENANCE
FOR LANDING CRAFT, MECHANIZED (LCM-8) (ALL VESSELS WITH MOD 2 APPLICATION)
SEATOR SEA 3000 MODEM, REPLACE
INITIAL SETUP:
Tools and Special Tools:
Personnel Required:
Tool Kit, Mechanic's Rail and Marine
Two Watercraft Engineers, 88L
(Item 1, Table 1, WP 0230 00)
Multimeter (Item 2, Table 1, WP 0230 00)
References:
FM 55-502
Equipment Condition:
TM 55-1905-242-24P (WP 0042)
SEA 330 MF/HF RADIO circuit breaker set to OFF,
locked out, and tagged out IAW FM 55-502
REMOVAL
WARNING
Replace or repair components only after the affected circuit has been secured, locked
out, and tagged out. Performing replacement with the circuit energized may result in
damaged equipment and serious injury or death to personnel.
1.
Remove the modem from the top of the watch receiver. The modem is held in place by Velcro on its bottom.
2.
Disconnect the radio connector (1) from the rear of the modem (2). Set the multimeter to the Vdc (Volts direct current)
setting. Place the multimeter leads on the pins (3) to check for voltage. If no voltage is noted, proceed to the next step.
If voltage is noted, ensure that the circuit breaker is properly secured.
3.
Disconnect the ground wire (4).
4.
Disconnect the terminal connector (5) from the rear of the modem (2).
5.
Disconnect the printer connector (6) from the rear of the modem (2).
INSTALLATION
1.
Connect the terminal connector (5) to the rear of the modem (2).
2.
Connect the printer connector (6) to the rear of the modem (2).
3.
Connect the ground wire (4).
4.
Connect the radio connector (1) to the rear of the modem (2).
5.
Position the modem back on top of the watch receiver and ensure that its Velcro fasteners secure it tightly.
6.
Remove the lockouts and tagouts and check the operation of the system.
0110 00-1
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