ILF 402, 452, 509, 510, 523, 525-528, 576, 577; ILF 151, 156-199, 401, 405, 416, 508, 536, 541, 542,
571-575, 671, 672, 686, 703, 707-710, 803, 808-811, 813, 854-856, 861-863, 871-874, 968-970, 972, 973
POST SB 737-47-1003
(h) Set the RECIRC FAN switch to the OFF position.
ILF 402, 452, 509, 510, 523, 525-528, 568, 569, 576, 577, 581, 583, 585, 588-590, 592-599, 601-603,
606, 607, 610-615, 620, 625-627, 691-699, 833-835, 838, 971, 980-999; ILF 101, 151, 156-199, 301,
304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405, 406, 409, 410, 412, 416, 424, 425, 427-429,
451, 501-504, 507, 508, 512-514, 516, 518, 524, 531-533, 535-537, 541, 542, 552-556, 560-562, 567,
571-575, 671, 672, 686, 703, 707-710, 803-813, 821, 822, 831, 832, 836, 837, 841, 842, 851, 852,
854-858, 861-863, 871-874, 947, 948, 968-970, 972, 973 POST SB 737-47-1003
SUBTASK 47-00-00-010-010
(2) Go to the NGS BITE display unit (BDU) location.
SUBTASK 47-00-00-740-060
(3) Use the BDU keys to set up the applicable BITE initiated tests.
SUBTASK 47-00-00-740-061
(4) Push the ON/OFF button on the BDU to energize the unit.
NOTE: If there is no activity for 5 minutes, the BDU will automatically go into the standby
mode. If the BDU goes into the standby mode, push the ON/OFF button to go to the
main menu.
SUBTASK 47-00-00-740-062
(5) Make sure that the BDU is in the main menu mode.
SUBTASK 47-00-00-740-063
(6) The BDU will show one of these functions:
NOTE: If the BDU does not show one of these functions, then push the MENU button until one
of these functions shows:
(a) EXISTING FAULTS?
(b) FAULT HISTORY?
(c) GROUND TESTS?
(d) OTHER FUNCTIONS?
SUBTASK 47-00-00-740-064
(7) Push the up or down arrow until the BDU shows GROUND TESTS?
SUBTASK 47-00-00-740-065
(8) Push the YES button on the BDU.
SUBTASK 47-00-00-740-066
(9) Make sure that the BDU shows ELECTRICAL TEST?.
NOTE: If the BDU does not show “ELECTRICAL TEST?”, push the up or down arrow until
“ELECTRICAL TEST?” shows.
SUBTASK 47-00-00-740-067
(10) Push the YES button on the BDU.
SUBTASK 47-00-00-740-069
(11) The BITE test will start.
NOTE: TEST IN PROGRESS XXX% COMPLETE will show on the display during the test.
NOTE: The electrical test does an IBIT check of the operability indicator lights at 40 to 50
seconds after the test starts. You must make sure that the three colored lights come on
in this sequence (Table 201):
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
47-00-00
Page 213
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF 402, 451, 452, 494-500, 503, 504, 509, 510, 514, 523-528, 541, 560-564, 567-569, 574-577, 581, 583, 585,
588-590, 592-599, 601-603, 606, 607, 610-615, 620, 625-627, 671, 672, 691-699, 832-835, 838, 856-858, 947,
948, 968-973, 980-999; ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 405,
406, 409, 410, 412, 416, 424, 425, 427-429, 501, 502, 507, 508, 512, 513, 516, 518, 531-533, 535-537, 542,
552-556, 571-573, 686, 703, 707-710, 803-813, 821, 822, 831, 836, 837, 841, 842, 851, 852, 854, 855, 861-863,
871-874 POST SB 737-47-1002 OR POST SB 737-47-1003 OR POST SB 737-47-1015; ILF 491-493, 515,
519, 520, 530, 557, 559 POST SB 737-47-1002 OR POST SB 737-47-1015
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