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757
MAINTENANCE MANUAL
LOWER EICAS DISPLAY STATUS PAGE
Elevator Control and Fault Indication
Figure 9
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(2)
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757
MAINTENANCE MANUAL
(c)
Check that L and R ENG OIL PRESS (11K9, 11K35) circuit breakers on panel P11 are closed.
(d)
Check that R, L, and C FLT CONT S/O TAIL (11H20, 11H17, 11H18) circuit breakers on overhead circuit breaker panel P11 are closed.
(e)
Check that R, L, and C FLT CONT SHUTOFF TAIL valve switches on sidewall panel P61 are in ON position.
WARNING: AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS AND
_______ STABILIZER ARE FULLY POWERED SURFACES. CHECK THAT ALL PERSONNEL AND EQUIPMENT ARE CLEAR OF ALL CONTROL SURFACES BEFORE PROVIDING HYDRAULIC POWER. INJURY TO PERSONNEL OR DAMAGE TO EQUIPMENT COULD OCCUR.
(f)
Pressurize left, right, and center hydraulic systems (Ref 29-11-00).
(g)
Pull control columns aft to stop and hold. Check that both elevators move up smoothly to their full travel, and that both elevator position indicators travel to approximately full travel tick mark on the EICAS screen.
(h)
Release control columns. Check that elevators, control columns, and position indicators return to neutral positions unassisted.
(i)
Push control columns forward to stop and hold. Check that both elevators move down smoothly to their full travel, and that both elevator position indicators travel to approximately full travel tick mark on the EICAS screen.
(j)
Release control columns. Check that elevators, control columns, and position indicators return to neutral positions unassisted.
(k)
Remove left, right, and center systems hydraulic power (Ref 29-11-00).
(l)
Remove electrical power (Ref 24-22-00).Autopilot Operation
(a)
Refer to 22-12-00, Autopilot/Flight Director Pitch Channel -Description and Operation for elevator control in the auto flight mode.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-31-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 FAULT ISOLATION/MAINT MANUAL
ELEVATOR CONTROL SYSTEM
COMPONENT SHT 102 FIG. QTY ACCESS/AREA REFERENCE
ACTUATOR - ELEVATOR ASYMMETRY LIMITER, M10048 3 1 313AL, AFT FUSELAGE 27-31-03
ACTUATOR - ELEVATOR FEEL 4 1 313AL, AFT FUSELAGE 27-31-18
ACTUATOR - ELEVATOR POWER CONTROL (PCA) 4 6 335DB (L PCAs),345DB (R PCAs) 27-31-05
CIRCUIT BREAKERS - 1 FLT COMPT, P11
ELEVATOR LIMIT, C4032 1 11J12 *
ELEVATOR POSITION L, C4101 1 11J13 *
ELEVATOR POSITION R, C4102 1 11J22 *
PCU MON MOD, C4270 1 11J11 *
PCU MON SENSOR, C4283 1 11J10 *
EICAS L, M10181 EICAS R, M10182 COMPUTERS - (31-41-00/101) COLUMN - CONTROL 1 2 113AL, FWD EQUIP CTR 27-31-10
COMPUTER - ELEVATOR FEEL 2 1 311AL 27-31-19
ELEVATOR - 4 2 HORIZONTAL STAB REAR SPAR 27-31-01
FEEL AND CENTERING UNIT - ELEVATOR 3 1 311AL, AFT FUSELAGE 27-31-17
STABILIZER TRIM/ELEV ASYM LIMIT R, M525 STABILIZER TRIM/ELEV ASYM LIMIT L, M524 MECHANISM - NEUTRAL SHIFT AND OVERRIDE MODULES - (27-09-00/101) 4 1 313AL, AFT FUSELAGE 27-31-21
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