TM 55-1930-209-14&P-12
Table 4-2. Circuit Breaker Safety Guide
Equipment
Panel
Supplied Power
Rating
Circuit Breaker
Identification
Location
Telephone system
24 Vdc
3P14
24 Vdc power
Workshop on
except headset
panel
aft bulkhead
station buzzers
and strobe light
Emergency light
120 Vac
10P13
Emergency light
ROWPU space
panel to provide
panel
on forward
power to
bulkhead
emergency light
panel
Headset buzzes
120 Vac
10P13A-7
Power panel 3
ROWPU space
and strobe light
on forward
bulkhead
NOTE
Any one of 12 crew telephone stations can be paged. Telephone stations 2, 6, 8, 9, 11, and 12
include more than one telephone headset station.
4-12 Operating procedures. Telephone system normally requires a system operator in the dayroom. Normal
operating procedures are described in the following paragraphs:
4-12.1 Talking with telephone station from operator station in dayroom
a. On telephone station selector box (Figure 4-2), press telephone system PUSH-ON/PUSH-OFF button to
supply 24 Vdc power to telephone system. Make sure white indicator light comes on.
b. On telephone station selector box, turn selector switch knob to station to be called
c. On telephone station selector box, press BUZZER switch to ON position.
NOTE
Telephone headset station buzzer or strobe light at telephone station being paged is activated.
Alarms alert crew to an incoming call. Table 4-1 provides detailed headset station location.
d. Operator removes telephone handset (Figure 4-3) from hook (hang-up switch) on side of radio operator's desk and
checks that corresponding station is online. Then, operator speaks into handset microphone.
NOTE
Telephone station being called should answer page using station location as a call sign.
NOTE
Hold telephone handset approximately 1/2 to 1 in from mouth for best results. When message is
complete, hang up telephone handset on hook at mounting facility.
e. When conversation is finished, system operator must return telephone handset to its cradle on the mounting
facility.
4-7
