T M 5 5 - 1 5 2 0 - 2 4 0 - T
9-17.3 UTILITY RECEPTACLES OPERATIONAL CHECK (Continued)
9-17.3
TASK
RESULT
TASK
RESULT
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Check that COPILOT LH FWD and LH AFT
UTILITY circuit breakers (1, 2 and 3) are
closed.
Check that LH UTIL RCPT circuit breaker (4)
is closed.
Check that LH CABIN AC RCPT circuit
breaker (5) is closed.
Check that RH FWD, RH AFT, AND PILOT
utility circuit breakers (6, 7 and 8) are closed.
Check that RH UTIL circuit breaker (9) is
closed.
Check that RH CABIN AC RCPT circuit
breaker (10) is closed.
Connect a multi meter, set to measure
28VDC, between small socket (+) and large
socket of UTIL RCPT 28VDC receptacle (11).
Connect a multimeter, set to read 28VDC,
between small socket (+) and large socket of
UTIL RCPT 28VDC receptacle (12).
Connect a multimeter, set to read 28VDC,
between small socket (+) and large socket of
six cabin left side receptacles (13 and 14).
Connect a multimeter, set to read 28VDC,
between small socket (+) and large socket in
six cabin right side receptacles (15 and 16).
Connect a multimeter, set to read 115VAC,
between pin D and pins A, B, and C in cabin
left side 3 phase receptacle (17).
Connect a multimeter, set to read 115VAC,
between narrow socket and wide socket and
between narrow socket and ground socket in
receptacle (18).
Connect a multlmeter, set to read 115VAC,
between pin D and pins A, B, and C on cabin
right side 3-phase receptacle (19).
If any circuit breaker (1, 2, or 3) is open, close it, If
any circuit breaker opens again, go to task 9-17.4.
If circuit breaker (4) is open, close it, If it opens
again, go to task 9-17.4.
If circuit breaker (5) is open, close it. If it opens
again, go to task 9-17.5.
If any circuit breaker (6, 7, and 8) is open, close it.
If any circuit breaker opens again, go to task 9-
17.4.
If circuit breaker (9) is open, close it. if it opens
again, go to task 9-17.4.
If circuit breaker (10) is open, close it, If it opens
again, go to task 9-17.5.
Multimeter shall read 28VDC. If not; go to task 9-
17.6.
Multi meter shall read 28VDC. If not, go to task 9-
17.6.
Multi meter shall read 28VDC. If not, go to task 9-
17.6.
Multi meter shall read 28VDC, If not, go to task 9-
17.7.
Multi meter shall read 115VAC on all 3 pins. If not,
go to task 9-17.8.
Multi meter shall read 115VAC on both readings. If
not, go to task 9-17.8.
Multi meter shall read 115VAC at all 3 pins. If not,
go to task 9-17.9.
14, Connect a multi meter, set to read 115VAC,
Multi meter shall read 115VAC on both readings. If
between narrow socket and wide socket and
not go to task 9-17.9.
between narrow socket and ground socket on
receptacle (20).
FOLLOW-ON MAINTENANCE:
TM 55-1520-240-23:
Battery Disconnected
Electrical Power Off
Hydraulic Power Off
Utility Receptacles Dust Covers Installed
END OF TASK
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