ILF 401, 405, 406, 409, 410, 412, 416, 424, 425, 427-429, 451, 491, 492, 494-500, 502, 504, 507, 512, 513, 515,
518-520, 530-533, 535, 537, 541, 542, 556, 557, 559, 563, 564, 703, 821, 822, 831, 947 (Continued)
(b) Set the switches to the off mode.
1) Make sure the sign goes off.
ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 402, 452, 493, 501, 503,
508-510, 514, 516, 523-528, 536, 552-555, 560-562, 567-569, 571-577, 581, 583, 585, 588-590, 671,
672, 686, 707-710, 803-813, 832, 836, 837, 841, 842, 851, 852, 854-858, 861-863, 871-874, 948,
968-973
SUBTASK 24-52-01-710-002
(2) Do a test of the Passenger Cabin Signs:
(a) Make sure the no-smoking symbol comes on when electrical power is supplied.
(b) At the pilots overhead panel, P5, set the switch for the seat belts to the on mode.
NOTE: The switch for the no-smoking signs does not operate.
1) Make sure the fasten-seat-belt symbol comes on.
(c) Set the fasten-seat-belt switch to the off mode.
1) Make sure the fasten-seat-belt symbol goes off.
(d) Make sure the no-smoking symbol stays on.
ILF 592-599, 601-603, 606, 607, 610-615, 620, 625-627, 691-699, 833-835, 838, 980-999
SUBTASK 24-52-01-710-003
(3) Do a test of each lavatory-occupied sign:
NOTE: Use two people to do this part of the test.
(a) Make sure the lights behind the occupied symbol are off.
(b) Go in the lavatory and lock the door.
NOTE: For airplane with multiple lavatories in the aft cabin, the lavatory-occupied sign
comes on when all lavatories in the aft cabin are locked.
1) Make sure the lights behind the occupied symbol come on.
(c) Leave the lavatory and close the lavatory door.
1) Make sure the lights behind the occupied symbol go off.
ILF 101, 151, 156-199, 301, 304, 308, 310, 314, 315, 317-319, 323, 331-399, 401, 402, 405, 406, 409,
410, 412, 416, 424, 425, 427-429, 451, 452, 491-504, 507-510, 512-516, 518-520, 523-528, 530-533,
535-537, 541, 542, 552-557, 559-564, 567-569, 571-577, 581, 583, 585, 588-590, 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, 968-973
SUBTASK 24-52-01-710-004
(4) Do a test of each lavatory-occupied sign:
NOTE: Use two people to do this part of the test.
(a) Make sure lamps behind the lavatory symbol are on.
NOTE: The lamps come on when electrical power is supplied to the airplane.
(b) Make sure the lamps behind the occupied symbol are off.
(c) Go in the lavatory and lock the door.
1) Make sure the lamps behind the occupied symbol come on.
(d) Leave the lavatory and close the lavatory door.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-52-01
Page 405
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
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