TM 55-1930-209-14&P-12
4-14 Operation under extreme conditions
a. Cold weather
(1) Do not bend cable or cords suddenly
(2) Keep ice off outdoor headset stations and buzzers
b. Hot weather Keep headsets and other electrical components free from condensation
Section IV. Maintenance instructions
4-15 General
4-15.1 Maintenance concept
4-15.1.1 Maintenance tasks will be performed by either the barge crew or IDS/GS support units Crew capabilities and
equipment will determine which tasks the crew will perform IDS/GS support units will perform tasks the crew is not
prepared to perform.
4-15.1.2 Intermediate support maintenance Is accomplished by replacement of components or major end items.
4-15.1.3 MAC data is contained In TM 55-1930-309-14&P-18 For maintenance of other equipment onboard, consult
appropriate manual
4-15.2 Maintenance procedures. Maintenance instructions are presented in paragraphs 4-16, Preventive maintenance
checks and services, Appendix C, Troubleshooting, and 4-18, Maintenance procedures
4-16 Preventive maintenance checks and services. See TM 55-1930-209-14&P-12, Appendix C for the preventive
maintenance checks and services for the communications system See TM 55-1930-209-14&P-19 for complete
preventive maintenance checks and services for all systems on the ROWPU Barge.
4-17 Troubleshooting. Troubleshoot the telephone system as given in Table 4-3. This table lists only common
malfunctions that may occur during operation If a malfunction occurs that is not listed and the cause is not readily
apparent, notify IDS or IGS maintenance for assistance.
Table 4-3. Telephone System Troubleshooting
Condition
Possible Cause
Suggested Action
1. Telephone system not
a. Circuit breaker 3P14
a. Close (ON) circuit breaker
operating
supplying 24 Vdc open
(OFF)
b. Telephone station
b. Press (PUSH-ON) switch
selector box
PUSH-ON/PUSH-OFF
switch is off
c. Telephone station
c. Replace 0.5 A fuse
selector box fuse blown
d. Batteries low or
d. Troubleshoot emergency
emergency electrical
electrical system as given in
system malfunctioning
TM 5-1930-209-14&P-9
e. Station selector box
e. Test and repair or replace,
assembly malfunctioning
see para 4-18.2.4
4-14
