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747-400 MAINTENANCE MANUAL
(b)
Make sure 1 shows for bit position 28.
(c)
Set the A/T ARM switch to the OFF position.
(d)
Make sure 0 shows for bit position 28.
S 865-160
(10) Prepare the INPUT MONITORING page to monitor label 270:
NOTE: Label 270 monitors this input:
____ -FMC master switch
(a)
Push E/42/270/00 on the scratchpad for the center CDU.
(b)
Push the necessary LSK to show E/42/272/00 below the PORT LBL SDI indication. 1) Make sure SAMPLE shows intermittently below E/42/270/00.
S 735-161
(11) Do the FMC input check for label 270:
(a) Set the FMC master switch to the R-FMC position.
NOTE: The FMC master switch is on the P2 pilot's center
____
instrument panel.
(b)
Make sure 0 shows for bit position 24.
(c)
Set the FMC master switch in the L-FMC position.
(d)
Make sure 1 shows for bit position 24.
S 865-162
(12) Prepare the INPUT MONITORING page to monitor E/42/274/00:
NOTE: Label 274 monitors these inputs:
____ -Air/Ground status (1=ground)
-A/T Disconnect (1=disconnect)
-Go Around status (1=G/A)
(a) Push E/42/274/00 on the scratchpad for the center CDU.
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747-400
MAINTENANCE MANUAL
(b) Push the necessary LSK to show E/42/274/00 below the PORT LBL SDI indication. 1) Make sure SAMPLE intermittently shows below E/42/274/00.
S 735-163
(13) Do the input check for label 274:
(a)
Open this circuit breaker:
1) P7 Overhead Circuit Breaker Panel a) 7F23 LANDING GEAR DSP & CONT ALTN
(b)
Make sure 0 shows for bit position 26.
(c)
Close this circuit breaker:
1) P7 Overhead Circuit Breaker Panel a) 7F23 LANDING GEAR DSP & CONT ALTN
(d)
Make sure 1 shows for bit position 26.
(e)
Push and hold the TO/GA switches.
NOTE: The TO/GA switches are on the two inner throttle levers.
____
(f)
Make sure 1 shows for bit position 27.
(g)
Release the TO/GA switches.
(h)
Make sure 0 shows for bit position 27.
(i)
Push and hold the captain's A/T disconnect switch.
NOTE: The captain's A/T disconnect switch is on the left
____
throttle lever.
(j)
Make sure 1 shows for bit position 28.
(k)
Release the captain's A/T disconnect switch.
(l)
Make sure 0 shows for bit position 28.
S 865-164
(14) Prepare the INPUT MONITORING page to monitor E/42/160/00:
NOTE: Label 160 monitors these inputs:
____ -NAV source select switch
-ADC source select switch
-HDG reference select switch (1=NORM, 0=TRUE)
(a) Push E/42/160/00 on the scratchpad for the center CDU.
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MAINTENANCE MANUAL
(b) Push the necessary LSK to show E/42/160/00 below the PORT LBL SDI indication. 1) Make sure SAMPLE intermittently shows below E/42/160/00.
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