22-11-00
ALL ú ú 13 Page 23 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
FROM SERVO
H G
POWER CB (SH 3)LOCAL SVO ENGAGETO OTHER
(SH 3)
F
FCC'S
(SH 3)
FROM MCP
E
(SH 3)
(A/P +28V DC
POWER SUPPLY VALIDSERVO HARDWARE
ARM)
AILERON HYD ARM
POWER
SOFTWARE COMPUTER VALID
COMPUTER INHIBIT
SUPPLY
CMD REQUEST
TO ARM ANDMON
ELEVATOR HYD ARM
ENGAGE FOREIGN ENGA
(SH 3)
CWS REQUEST
SOLENOIDSFOREIGN ARM
C
ARM INITIATE AILERON DETENT ENGAGEDBCRS ELEVATOR DETENT ENGAGEDAPP MODE ARM INHIB FAULT
4 FOREIGN IN CMD
CMD REQUEST 2 ELEV/
SQ
AIL ARM
COMPUTER
MAN. DISC METHOD 1 TRUE ELEV/AIL ENGA
MONITORS ELEV/
AIL ARM
MULTI-ARM INIT
1
SIGNAL
RELAY LOCAL SOLENOID ENGA
POWER MON FAIL
I/O MCP VALID
CMD PROCESSINGBCRS
REQ
ARM
& (SH 3) A
REMOVAL FAULT MONITORS TO AFCS
APP MODE MAN. DISC R
ARM REMOVAL
MCP & SAMSCWS REQ
COND
CWS REQUEST
CHANNEL
CROSS FOREIGN ARM CROSS
WHEEL DISCONNECT
FOREIGN ENGA
TO REL L FCC&
CHANNEL
MONITORS CMD REQUEST
CWS REQUEST
SQ
ELEV/AILMONITORS TO REL R FCC
ENGA INITIATION
FOREIGN IN CMD ENGA
MULTI ENGALOCALIZER CAPT INIT LOCAL CAMOUT
G/S CAPT
ELEV/AIL
SIGNAL
FOREIGN
PITCH/ROLLMULTI-ARM INIT
RAD ALT<1500 FTENGA RELAY
FOREIGN
(SH 3) ENGA YAW MODE
CAMOUT
I/O B ENGA REMOVAL FAULT
G/A
PROCESS/
AUTOTRIM VALID 1
D
LOGIC & FOREIGN IN CMD
MAN. DISC R
MODE RUD
AUTOTRIM VALID 2 (SH 3)
ENGA REMOVAL COND
MON& EQUAL-
(SH 3)JENGA
MONITORS FLARE ENGA (SH 3)K
IZATION FOREIGN ENGA CWS
IN AIR AIL SVO
AIL
SOFTWARE
DETENT
TO OTHERELEV SVO
ELEV
AIL SURF LOGIC
HARDWARE LOCALG/A MODE
RUD
FCC'S
LVDT
ELEV SURF DETENT
MONITOR
TRANS G/A TO CRUISE RUD SVO 28V DC ILS
TO ILS RCVRLVDT
RUD SURFLOCAL FIRST IN CMDTUNE INH
AND CONTROLMON
2 IN CMD3 IN CMD LOCALIZER ENGAGED PANEL GLIDESCOPE ENGAGED RA
TO RADIOTWO SAME AUTOLAND FAILURE
TWO SAME INNER LOOP FAILURETEST INHALTIMETER
L DETENT
R DETENT
RMTR/RCVR
SOURCE
SELECT RAD ALT<200 FT (ALERT HEIGHT) A/L
BUS ISOLFAULT
S Q BUS ISO
RELAY DETECTMON R
G/A MODE
LAND 3 MAN. DISCR ELEV/AIL & RUD SVO ENGA
LAND 3
L ELEV/AIL & RUD SVO ENGA
ROLL
LOCAL AIL/ELEV & RUD SVO ENGA
MODE
LAND 2 TO CAPT &
LOGIC LAND 2 F/O ASA'S
NOLAND 3
ASA RESET
ANY CHANNEL FAIL
PITCH
MODE FULL TIME NO LAND 3 NO A/LLOGIC ANY TWO CHANNELS FAIL
APPROACH RESET ONE SHOT
AUTO. RESET NOTES:
FLIGHT CONTROL COMPUTER
1 INHIBIT LOGIC LOW 2 NECESSARY FOR 3 TRUE IF FULL 4 ALL OUTPUT SIGNALSDURING POWER UP ONLY APPROACH METHOD II TIME NO LAND OPTION ARE WRAPPED AROUND
ELEV/AIL SERVOS
Autopilot/Flight Director System Arm and Engage Logic Schematic
Figure 8 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
GUN 001-050, 052-999 ú 22-11-00
ú ú 08 Page 24 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
D01598
A
757
MAINTENANCE MANUAL
FROM SERVO
POWER CB H (SH 3) LOCAL SVO ENGAGE TO OTHER
G
(SH 3)
F
FCC'S
(SH 3)
FROM MCP
E
(SH 3)
(A/P +28V DC
POWER SUPPLY VALIDSERVO HARDWARE
ARM)
AILERON HYD ARM
POWER
SOFTWARE COMPUTER VALID
COMPUTER INHIBIT
SUPPLY
TO ARM ANDMON ELEVATOR HYD ARM
CMD REQUEST
ENGAGEFOREIGN ENGA(SH 3)
SOLENOIDSFOREIGN ARM
C
ARM INITIATEAILERON DETENT ENGAGEDELEVATOR DETENT ENGAGEDAPP MODEARM INHIB FAULT
4 FOREIGN IN CMDCMD REQUEST2
ELEV/
SQ
AIL ARM
COMPUTER
MAN. DISCMETHOD 1 TRUE ELEV/AIL ENGA
MONITORSELEV/
AIL ARM
MULTI-ARM INIT
1
SIGNAL
RELAY LOCAL SOLENOID ENGAPOWER MON FAIL
I/OMCP VALID
CMDPROCESSINGARM
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