TASK 22-11-01-735-019
3. System Test - Digital Flight Control System___________________________________________
A. General
(1)
The system test of the DFCS gives a procedure for each interface test of the DFCS. This task supplies a test of all the BITE in the DFCS.
(2)
The DFCS system test includes:
(a)
Option Pins Check
(b)
BITE Ground Functional Test
(c)
Wheel Spin Up Test
(d)
Power Bus Transfer Test
(e)
Bus Isolation Test
(f)
Circuit Breaker Interface Test
(g)
Air/Ground Discrete Test
(h)
L-NAV Input Test
(i)
Baro Input Test
(j)
Sensor Switching Test
(k)
Maintenance Monitor Test
(l)
Flap Switch Rigging Test
(m)
Sensor Excitation Test
(n)
Spoiler Position Sensor Test
(o)
Master Caution Test
(p)
Dual FMC Test
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-15-00/201, Hydraulic A, B, and Standby System
(3)
AMM 34-11-01/501, Pitot Static System
(4)
AMM 34-28-01/201, Inertial Reference System
(5)
AMM 49-11-00/201, APU Power Plant
C. Access
(1)
Location Zones
101 Control Cabin - Left
102 Control Cabin - Right
205 Electronic Compartment
(2)
Access Panel
1201L Electronic Equipment Access Door
D. Prepare for the System Test
S 845-129
(1) Do the preparation for the DFCS BITE test in this task: "Operational Test - Digital Flight Control System".
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A
737-300/400/500MAINTENANCE MANUAL
E. Option Pin Check
S 745-020
(1) Do the option pin check:
(a)
Open the AFCS B FCC DC circuit breaker on P6-2 Circuit Breaker Panel.
(b)
Set the FMC transfer switch to NORMAL position.
(c)
Push the INIT/REF key on the CDU keyboard to show the POS INIT page or PERF INIT page.
(d)
Push the LSK adjacent to <INDEX to show the INIT REF INDEX 1/1 page.
(e)
Push the LSK adjacent to MAINT> to show the MAINT BITE INDEX 1/1 page.
(f)
Push the LSK adjacent to <DFCS to show the DFCS BITE TEST LINE MAINT 1/2 page.
(g)
Ignore the message "MOVE FMC TRANSFER SWITCH TO BOTH ON L" shows on the CDU and keep the position of the FMC transfer switch in the NORMAL position.
(h)
Stop for approximately 15 seconds.
(i)
Push the LSK adjacent to <PUSH IF NO RESPONSE.
(j)
Push the LSK adjacent to <CONTINUE.
(k)
Push the NEXT PAGE key on the CDU to show the DFCS BITE TEST OVERNIGHT MAINT 2/2 page.
(l)
Push the LSK adjacent to <SENSOR VALUES to show the Sensor Values Test Index page.
(m)
Push the LSK adjacent to <OPTIONS (SOP) to show the first page of the standard options.
(n)
Push the LSK adjacent to <CONTINUE to show the second page of the standard options.
(o)
Make sure that the options on Table 501 agree with the options shown on the CDU display.
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A 737-300/400/500MAINTENANCE MANUAL
~............................................................ | Programmable Pin Options | | Table 501 | .............................................................. | OPTIONS | EFFECTIVITY | .............................................................. | SOP - ALT ALERT STD | ALL | .............................................................. | SOP - FAA VMO/MMO | ALL | .............................................................. | SOP - DUAL | ALL | .............................................................. | SOP - CWS OV/RD | ALL | .............................................................. | SOP - F/D TOGA | ALL | .............................................................. | SOP - WINGS LVL | ALL | .............................................................. | SOP - ILS DEV-1 | ALL | .............................................................. | SOP - COMPATIBILITY 4 | ALL | .............................................................. | SOP - PARITY OPEN | ALL | .............................................................. | SOP - AUTO F/D TOGA | ALL | .............................................................. | SOP - ELEC AIL LIM | ALL | .............................................................. | PGM - SPD TRIM ENABLED | ALL | .............................................................. | PGM - EFIS INSTALLED | ALL | .............................................................. | PGM - MT SELECTED | IGNORE THIS OPTION | .............................................................. | PGM - LNAV INPUT | IGNORE THIS OPTION | 2.............................…..............................1
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