E. CMC Interface Test
S 215-255
(1) Make sure these circuit breakers are closed:
(a)
On the P180 DC Power Distribution Panel:
1) 180D16, CMC SW
(b)
On the P415 Right Main Power Distribution Panel: 1) 415L39, CMC R
(c)
On the P414 Left Main Power Distribution Panel: 1) 414L8, CMC L
(d)
On the P6 Overhead Panel:
1) 6D7, IRS LEFT AC
2) 6D8, IRS CENTER AC
3) 6D9, IRS RIGHT AC
4) 6E7, IRS LEFT DC
5) 6E8, IRS CENTER DC
6) 6E9, IRS RIGHT DC
S 865-256
(2)
Make sure the left, center, right IRU's are aligned and in the NAV mode.
S 745-257
(3)
Do a self-test on both of the ATC transponders (AMM 34-53-00/501).
(a) Make sure the ATC self-test is OK (green PASS indicator is illuminated).
S 745-258
(4) Push the TEST switch on the TCAS computer.
(a) Make sure the TCAS self-test is OK.
S 865-259
(5) Go to <INPUT MONITORING from the other OTHER FUNCTION page on the MCDU.
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A
747-400
MAINTENANCE MANUAL
S 865-260
(6)
Enter C/30/350/00 into the PORT/LBL/SDI field using the CMC scratch pad and 1LSK key.
S 865-261
(7)
Cycle the TCAS circuit breaker.
NOTE: This is to clear latched label 350 faults (for some vendors
____
only).
(a) Make sure bits 11 through 20 and 23 through 27 of label 350 from the TCAS processor are set to zero.
S 865-262
(8) Open this circuit breaker on the P414 panel:
(a) 414L8, CMC L
S 865-263
(9)
Go to <INPUT MONITORING from the OTHER FUNCTIONS page on the MCDU.
S 865-264
(10)
Enter C/30/350/00 into the PORT/LBL/SDI field using the CMC scratch pad and the 1LSK key.
(a) Make sure bits 11 through 20 and 23 through 27 of label 350 from the TCAS processor are set to zero.
S 865-265
(11) Close this circuit breaker on the P414 panel:
(a) 414L8, CMC L
F. Low Range Radio Altimeter Interface Test
S 215-121
(1)
Make sure the two PFD's show a radio altitude between 0 and -10 feet.
S 745-122
(2)
Push the TEST switch on the front panel of the TCAS computer.
(a) Make sure you hear the TCAS TEST OKAY annunciation.
S 865-123
(3) Open this circuit breaker.
(a) P7 Overhead Circuit Breaker Panel:
1) B03, RADIO ALTM L
S 745-124
(4) Push the TEST switch on the front panel of the TCAS computer.
(a) Make sure you hear the TCAS TEST OKAY annunciation.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 865-125
(5) Open this circuit breaker.
(a) P7 Overhead Circuit Breaker Panel:
1) C21, RADIO ALTM R
S 745-126
(6) Push the TEST switch on the front panel of the TCAS computer.
(a) Make sure you hear the TCAS TEST FAIL annunciation.
S 865-127
(7) Close this circuit breaker.
(a) P7 Overhead Circuit Breaker Panel:
1) B03, RADIO ALTM L
S 865-128
(8)
Open and then close the TCAS circuit breaker to clear the latched fail state of the TCAS computer, if necessary.
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