(h)
Remove the angle-of-airflow sensor calibrator tool from the right alpha vane.
S 865-021
(4)
Close the R ALPHA VANE HEATER and L ALPHA VANE HEATER circuit breakers on the P18-3 Circuit Breaker Panel.
S 745-152
(5)
Push the INIT/REF key on the CDU keyboard to get out of the BITE.
M. Put the Airplane Back to Its Initial Condition
S 865-122
(1)
Remove hydraulic power if it is not necessary (AMM 29-15-00/201).
S 085-123
(2)
Remove all the test equipment.
S 085-124
(3)
Remove the feel pitot system pressure air supply.
S 015-125
(4)
Close all the access panels and doors.
S 865-126
(5)
Close all the circuit breakers.
S 865-127
(6)
Remove electrical power if it is not necessary (AMM 24-22-00/201).
TASK 22-11-01-735-132
5. DC Bus Isolation Test______________________
NOTE: This is a scheduled maintenance task.
____
A. Bus Isolation Test
S 865-097
(1)
Set the meter selector switch for the TRU to the TR2 position.
S 865-098
(2)
Open the AFCS B FCC DC circuit breaker on the P6-2 Circuit Breaker Panel.
S 865-099
(3)
Open the TR2 and TR3 circuit breakers on the P6-4 Circuit Breaker Panel.
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737-300/400/500MAINTENANCE MANUAL
(4) S 745-192Make sure that the DC voltmeter on the Pilots' Overhead Panel, P5-13 reads 22 to 30v dc.
(5) S 745-161Push the INIT/REF key on the CDU keyboard to show the POS INIT page or PERF INIT page.
(6) S 745-101Push the LSK adjacent to <INDEX to show the INIT REF INDEX 1/1 page.
(7) S 745-102Push the LSK adjacent to MAINT> to show the MAINT BITE INDEX 1/1 page.
(8) S 745-103Push the LSK adjacent to <DFCS to show the DFCS BITE TEST LINE MAINT 1/2 page.
(9) S 745-104Push the NEXT PAGE key on the CDU keyboard to show the DFCS BITE TEST OVERNIGHT MAINT 2/2 page.
S 745-105
(10) Push the LSK adjacent to <GROUND FUNCTIONAL.
NOTE: The CDU display will show TEST IN PROGRESS during the
____ 13-second cross-channel test.
S 745-106
(11)
Follow the CDU instructions until the CDU display shows the CHANNEL SELECTION page.
S 745-107
(12)
Push the LSK adjacent to <CHANNEL A to show the FCC memory contents of channel A.
S 745-108
(13)
Push the LSK adjacent to <TEST SELECTION.
S 745-109
(14)
Use the CDU keyboard to put the library test No. 13 into the CDU scratchpad.
S 745-110
(15)
Push the LSK 6R to put the library test No. 13 on the screen and in the memory.
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737-300/400/500MAINTENANCE MANUAL
S 745-111
(16)
Push the LSK adjacent to <EXECUTE to do the test 60.13 "AFDS FMA" is shown on the CDU.
S 745-112
(17)
Do the preparation steps as shown on the CDU display but keep the TR2, TR3, AFCS B FCC DC circuit breakers open.
S 745-113
(18)
Push the LSK adjacent to <CONTINUE until the question "Is the word TEST displayed on the CAPT EADI?" is shown on the CDU.
S 745-114
(19)
Make sure that the DC voltmeter on the Pilots' Overhead Panel, P5-13 is at 0v dc when the question "Is the word TEST displayed on the CAPT FMA?" is shown on the CDU.
S 865-115
(20)
Close the AFCS B FCC DC circuit breaker on the P6-2 Circuit Breaker Panel.
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