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21-29-02
ALL ú ú 01F Page 404 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
PRESSURIZATION CONTROL
COMPONENT SHT 102 FIG. QTY ACCESS/AREA REFERENCE
ACTUATOR - PRESSURIZATION OUTFLOW VALVE 2 2 AFT OF BULK CARGO COMPT 21-31-07
CAPACITOR - TUNING 2 AFT OF BULK CARGO COMPT, P213
B1688 1 *
B1689 1 *
B1690 1 *
B1691 1 *
CAPACITOR - TUNING 2 AFT OF BULK CARGO COMPT, P213
B1684 1 *
B1685 1 *
B1686 1 *
CARD - (REF 21-20-00, FIG. 101) ECS MISC PCA, YMLA13 B1687 1 *
CIRCUIT BREAKERS - 1 FLT COMPT, P6
CABIN PRESS AUTO A, C549 1 6J28 *
CABIN PRESS CONT R ICU, C10268 1 6J31 *
CABIN PRESS CONT L ICU, C10267 1 6J30 *
OUTFLOW VALVE MAN-R, C547 1 6L7 *
OUTFLOW VALVE MAN-L, C548 1 6L6 *
CIRCUIT BREAKERS - (REF 31-01-15, FIG. 101) CABIN PRESS AUTO B, C10183 OUTFLOW VALVE-L, C124 OUTFLOW VALVE-R, C381 1 6J29 *
CIRCUIT BREAKERS - 1 117AL, MAIN EQUIP CTR, P414
CABIN PRESS ICU LEFT, C3165 1 414M8 *
R FMC, M7443 L FMC, M7442 COMPUTER - (REF 34-61-00, FIG. 101) CABIN PRESS ICU RIGHT, C3166 1 414B8 *
CONTROLLER - CABIN PRESSURE AUTO A, M7948 1 1 117AL, MAIN EQUIP CTR, E1-3 21-31-02
CONTROLLER - CABIN PRESSURE AUTO B, M7949 1 1 117AL, MAIN EQUIP CTR, E2-3 21-31-02
DIODE - UPPER PRV BLOCKING, M1810 1 117AL, MAIN EQUIP CTR, E2-4 *
DIODE - LOWER PRV BLOCKING, M1811 1 117AL, MAIN EQUIP CTR, E2-4 *
FILTER - POSITIVE PRESSURE RELIEF VALVE 3 2 FWD CARGO COMPT, LH 21-32-02
ICU - L CABIN PRESSURE, M7950 2 1 AFT OF BULK CARGO COMPT, LH 21-31-10
ICU - R CABIN PRESSURE, M7951 2 1 AFT OF BULK CARGO COMPT, RH 21-31-10
INDICATOR - OUTFLOW VALVE POSITION 1 2 FLT COMPT, P5, CAB PRESS PNL, M181 *
MODULE - CABIN PRESSURE SELECT, M181 1 1 FLT COMPT, P5 *
MOTOR - OUTFLOW VALVE AC 2 2 AFT OF BULK CARGO COMPT 21-31-06
MOTOR - OUTFLOW VALVE DC 2 2 AFT OF BULK CARGO COMPT 21-31-08
* SEE WDM EQUIPMENT LIST
Pressurization Control - Component Index
Figure 101 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-30-00
ALL ú
ú 02 Page 101
ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
COMPONENT FIG. 102 SHT QTY ACCESS/AREA REFERENCE
RELAYS - (REF 32-09-00, FIG. 101) SYS ALT AIR/GRD, R7334 SYS PRI AIR/GRD, R7331 L RES - CURRENT LIMITING, R423,R424,R425 L OUTFLOW VALVE CLOSE, R356 L OUTFLOW VALVE OPEN, R355 L AUTO/MAN 2, R351 L AUTO/MAN 1, R349 RELAYS - (REF 31-01-33, FIG. 101) R RES - CURRENT LIMITING, R420,R421,R422 R OUTFLOW VALVE CLOSE, R353 R OUTFLOW VALVE OPEN, R352 R AUTO/MAN 2, R350 R AUTO/MAN 1, R348 RELAYS - (REF 31-01-30, FIG. 101)
SCREEN - PRESSURIZATION OUTFLOW VALVE 2 2 AFT OF BULK CARGO COMPT 21-31-01
SWITCH - CABIN PRESSURE MODE, (S1) 1 1 FLT COMPT, P5, CAB PRESS PNL, M181 *
SWITCH - LANDING ALTITUDE, (S5) 1 1 M181 FLT COMPT, P5, CAB PRESS PNL, *
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