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(e) Push the ON/OFF button on the front panel of the FSEU to turn on the display.
NOTE: The display will show EXISTING FAULTS?
(f) Do a check of the position sensor inputs to the FSEU:
1) Select OTHER FUNCTNS? from the MAIN MENU on the FSEU.
2) Select I/O MONITOR? from the OTHER FUNCTNS? menu.
3) Select SYNCHRO INPUTS? from the I/O MONITOR? menu.
4) Make sure the inputs for the sensors are in the limits shown in (Table 503) for the UP
position.
NOTE: Push the arrow keys to step through the sensor values.
Table 503/27-51-00-993-809
Display (Sensor)
Sensor Input (Flap Position)
UP 40-Units
L FL POS -1.2 to 4.7 259.9 to 270.3
R FL POS -1.2 to 4.7 259.9 to 270.3
SUBTASK 27-51-00-720-004
(9) Do a test of the DOWN limit switch:
(a) Move the ALTERNATE FLAPS ARM switch to the OFF position.
(b) Move the flap control lever to the 30-unit position to extend the flaps.
(c) Make sure the pointers on the flap position indicator are in the 30-unit white band.
(d) Move the ALTERNATE FLAPS ARM switch to the ARM position.
(e) Move the flap control lever to the 40-unit position.
(f) Move and hold the ALTERNATE FLAPS CONTROL switch in the DOWN position until the
flaps stop.
(g) Do a check of the position sensor inputs to the FSEU:
1) Select OTHER FUNCTNS? from the MAIN MENU on the FSEU.
2) Select I/O MONITOR? from the OTHER FUNCTNS? menu.
3) Select SYNCHRO INPUTS? from the I/O MONITOR? menu.
4) Make sure the inputs for the sensors are in the limits shown in (Table 503) for the 40-
unit position.
NOTE: Push the arrow keys to step through the sensor values.
(h) Push the ON/OFF button on the front panel of the FSEU to turn it off.
(i) Move the ALTERNATE FLAPS ARM switch to the OFF position.
SUBTASK 27-51-00-860-029
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
FLAPS AND FLAP DRIVE MECHANISMS. THE FLAPS CAN CAUSE INJURIES TO
PERSONS AND DAMAGE TO EQUIPMENT.
(10) Move the flap control lever to the UP position to retract the flaps.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-51-00
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D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
SUBTASK 27-51-00-720-005
(11) Do this task: Flap Priority Valve Test, TASK 27-51-00-720-801.
SUBTASK 27-51-00-720-006
(12) Do this task: Flap Control Lever Force Test, TASK 27-51-00-720-802.
G. Put the Airplane Back to Its Usual Condition
SUBTASK 27-51-00-860-030
(1) Push the ON/OFF button on the front panel of the FSEU to turn it off.
SUBTASK 27-51-00-410-005
(2) For the main equipment center, do this step:
Close this access panel:
Number Name/Location
117A Electronic Equipment Access Door
SUBTASK 27-51-00-860-031
(3) Remove system B hydraulic power, do this task: Hydraulic System A or B Power Removal,
TASK 29-11-00-860-805.
------------------------- END OF TASK ---------------------------
TASK 27-51-00-740-801
6. FSEU Display and Existing Faults Test
(Figure 501)
A. General
(1) This test does a check of the BITE display and power supplies for the FSEU. It also does a check
for existing faults in the high lift system detected by the FSEU.
B. References
Reference Title
24-22-00-860-811 Supply Electrical Power (P/B 201)
C. Location Zones
Zone Area
117 Electrical and Electronics Compartment - Left
118 Electrical and Electronics Compartment - Right
212 Flight Compartment - Right
D. Access Panels
Number Name/Location
117A Electronic Equipment Access Door
E. Prepare for the Test
SUBTASK 27-51-00-860-032
(1) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-51-00-010-005
(2) To get access to the main equipment center, do this step:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-51-00
Page 545
Oct 10/2006
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Open this access panel:
Number Name/Location
117A Electronic Equipment Access Door
F. FSEU Display and Existing Faults Test
SUBTASK 27-51-00-740-001
(1) Push the ON/OFF button on the front panel of the FSEU to turn on the display.
NOTE: The display will show EXISTING FAULTS?
SUBTASK 27-51-00-750-001
(2) Do a test of the DC power supplies for the FSEU:
(a) Open this circuit breaker:
F/O Electrical System Panel, P6-2
Row Col Number Name
A 8 C00211 FLIGHT CONTROL FSEU DC 1
(b) Make sure the front panel display on the FSEU is still on.
(c) Close this circuit breaker:
　
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