S 744-038
(24)
Put the ENGINE 3 BLEED switch to the OFF position.
S 744-039
(25)
Make sure that the applicable labels and bits are set as follow: ~.................................................................. |E/59/352/10 (Engine 1)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/01 (Engine 2)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/11 (Engine 3)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/00 (Engine 4)| Make sure that bit 25 = 1, and bit 26 = 0.| 2......................…...........................................1
(26)
Put the ENGINE 4 BLEED switch to the ON position.
S 744-040
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747-400
MAINTENANCE MANUAL
S 744-041
(27)
Make sure that the applicable labels and bits are set as follow: ~.................................................................. |E/59/352/10 (Engine 1)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/01 (Engine 2)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/11 (Engine 3)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/00 (Engine 4)| Make sure that bit 25 = 0, and bit 26 = 1.| 2......................…...........................................1
S 744-042
(28)
Put the ENGINE 4 BLEED switch to the OFF position.
S 744-043
(29)
Make sure that the applicable labels and bits are set as follow: ~.................................................................. |E/59/352/10 (Engine 1)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/01 (Engine 2)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/11 (Engine 3)| Make sure that bit 25 = 1, and bit 26 = 0;| .................................................................... |E/59/352/00 (Engine 4)| Make sure that bit 25 = 1, and bit 26 = 0.| 2......................…...........................................1
S 864-018
(30)
Make sure that all the PACK switches are in the "OFF" position.
S 744-020
(31)
On airplane equipped with S210U130-41 or -101 or newer PTCs, get access to the CMCS input monitoring and enter these input codes and make sure that the bits are as follow: ~................................................................. | E/5/35710 | Make sure that bits 14-16 = 1, and bits 17-25 = 0;| ................................................................... | E/41/35710 | Make sure that bits 14-16 = 1, and bits 17-25 = 0.| 2............…....................................................1
(a)
Otherwise, refer to WDM 21-51-11, WDM 21-51-12, and
WDM 21-51-13 to do the appropriate continuity checks.
S 864-013
(32) Put each of the PACK switches on the P5 panel to the NORM position, one at a time.
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747-400 MAINTENANCE MANUAL
S 744-021
(33)
On airplanes equipped with S210U130-41 or -101 or newer PTCs, get access to the CMCS input monitoring to enter these input codes and to make sure that the bits are as follow: ~.................................................................. |E/5/35710 | Make sure that: | | | bits 14-16 = 0; bits 17-19 = 1; and bits 20-25 = 0; | .................................................................... |E/41/35710 | Make sure that: | | | bits 14-16 = 0; bits 17-19 = 1; and bits 20-25 = 0. | 2...........…......................................................1
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