SPOILER CONT 2R
INTERNALS
SAME AS
SPOILER
CONT 3L
SPOILER CONT 1L
2
RESET DISPLAY
A
B MAINTFAULT
INTERNALS
SAME AS
SPOILER
CONT 3L
SPOILER CONT 1R
10 SEC
30 SEC
20 SEC
30 SEC
STBY BUS OFF
L/R EICAS CMPTR
INTERNALS
SAME AS
LEFT YAW
DAMPER
RIGHT YAW DAMPER SPOILERS (W)
L FLT CONT ELEC (W)
RUDDER RATIO (W)
R FLT CONT ELEC (W)
STAB TRIM (W)YAW DAMPER (W)
A
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MAINTENANCE MANUAL
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A
757
MAINTENANCE MANUAL
INTERNALS
SAME AS
SPOILER
CONT 3L
SPOILER CONT 1R
10 SEC SPOILERS (W)
30 SECL FLT CONT ELEC (W)
20 SEC RUDDER RATIO (W)
30 SEC R FLT CONT ELEC (W)
STAB TRIM (W)
YAW DAMPER (W) STBY BUS OFF
L/R EICAS CMPTR
INTERNALS
SAME AS
LEFT YAW
DAMPER
RIGHT YAW DAMPER
MODULE
12
FAULT
MODULE
PUSH TO
2 LINES
FAULT
RESET
X 8 CHARSFAULT-DISPLAY
FAULT
ON
DRIVER MENU
BALL
OFF
LOGIC DRIVER
A INTERNALSINTERNALS
NO. 1 FAULT LOGICYES
VOLTAGE
NOSAME AS SAME AS
(SOFTWARE)
REGULATOR
SPOILER SPOILER
B CONT 3L CONT 3L
+28V DC
FAULT
OTHER PSM
NO. 1
MISSING
MAINT
PSM
SPOILER CONT 3R SPOILER CONT 2RFAIL
FAULT 1NO. 2
NO. 2
FAULT
LOGIC
MONITOR
CSEU PWR SUPPLY 1L+28V DC+28V DC INTERNALS INTERNALSSAME AS SAME AS
MAINTMAINTSPOILER SPOILER FAULT
FAULT 2 CONT 3L CONT 3L
SPOLER CONT 2L SPOILER CONT 1L
SPOILER CONT 3L
INTERNALS
SAME AS
CSEU PWR
SUPPLY 1L
INTERNALS
SAME AS
CSEU PWR SUPPLY 2L
LEFT RUDDER
RATIO
CHANGER
RIGHT RUDDER RATIO
INTERNALS
CHANGER
SAME AS
CSEU PWR
SUPPLY 1L
INTERNALS SAME AS
LEFT STABILIZER
TRIM/ELEVATOR
CSEU PWR SUPPLY 1R
ASYMMETRY
LIMIT MODULE
INTERNALSRIGHT STABILIZER TRIM/
SAME AS ELEVATOR ASYMMETRY
CSEU PWR LIMIT MODULE
SUPPLY 1L
SAM
IRU DADCYDACT
MODULE
FAULT CSEU PWR SUPPLY 2R FAULT-
SAM FAULT-
HYD BALL
LVDT AIR/GND
PRESS. DRIVER
BALL LATCH
AND DRIVER
YDM RESETGROUND TEST& SELECT
SAMNO. 1 NO. 1 A
FAULT NO. 2 NO. 2 ANY FAULT-B
TIMING LOGIC BALL SET
OTHER
1 AIRPLANES WITH
SAM VALID AUTO
CONTROL MODULES ENGAGE LOGIC FAULTS DETECTED
-100 SERIES SPOILER LATCHING & DISENGAGEMAINT
MAINT 2
MAINT
BY SAM FAULT
FAULT
AIRPLANES WITH
FAULT
-200 SERIES SPOILER
CONTROL MODULES LEFT RUDDER RATIO CHANGER LEFT STABILIZER TRIM/ELEVATOR LEFT YAW DAMPER
ASYMMETRY LIMIT MODULE
CSEU Fault Annunciation Schematic
Figure 7 (Sheet 2)
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MAINTENANCE MANUAL
(2)
Faultballs, when unlatched, show the color black for normal system operation, and show yellow (when latched) for a fault indication. When you push the maintenance reset button, you clear (unlatch) the faultball unless the fault is still present.
(3)
The faultballs, EICAS messages (maintenance, status, advisory or caution), and amber lights operate in combinations to indicate failures.
(4)
A module fault on a PSM or a RRC latches the MODULE FAULT indication.
(5)
A module fault on a -100 series SCM also latches the MODULE FAULT faultball. A module fault on a -200 series SCM latches a SCM FAULT message into the EXISTING FAULTS memory.
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