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PCA 2 PCA 8 THIS FAULT SHOWS WHEN THE SCM ATTEMPTS TO CONTROL THE POSITION OF THE SPOILER
FAULT FAULT BUT IS NOT ABLE TO.
PCA 3 PCA 9 THE PCA NUMBER CAN BE USED TO FIND THE WING LOCATION OF THE POSSIBLE DEFECTIVE
FAULT FAULT COMPONENTS.
PCA 4 PCA 10 THE FAULTS "PCA 1" TO "PCA 6" CORRESPOND TO THE SPOILERS 1 (OUTBOARD) TO 6
FAULT FAULT (INBOARD) ON THE LEFT WING.
PCA 5 PCA 11 THE FAULTS "PCA 7" TO "PCA 12" CORRESPOND TO THE SPOILERS 7 (INBOARD) TO 12
FAULT FAULT (OUTBOARD) ON THE RIGHT WING.
PCA 6 PCA 12
FAULT FAULT
L HYD THE HYDRAULIC SYSTEM PRESSURE SWITCHES SEND VALID HYDRAULIC DISCRETE SIGNALS TO
PRESS SW THE SCMs. THESE SIGNALS ARE A PAIR OF HIGH AND LOW LOGIC INPUTS.
R HYD THIS FAULT SHOWS WHEN THE HYDRAULIC INPUTS TO THE SCM ARE NOT IN THE USUAL
PRESS SW CONDITION.
C HYD THIS FAULT IS USUALLY CAUSED BY A FAILURE OF THE HYDRAULIC PRESSURE SWITCH, AND
PRESS SW DOES NOT IMPLY THAT THE HYDRAULIC PRESSURE IS LOW.
L HYD THIS FAULT SHOWS THE SCM DETECTS LOW HYDRAULIC PRESSURE.
PRESS LO ONLY ONE OF THESE FAULT MESSAGES CAN SHOW ON A SINGLE SCM.
R HYD PRESS LO ADDITIONAL AMBER LIGHTS AND EICAS MESSAGES WILL OCCUR IF THE HYDRAULIC PRESSURE STAYS LOW.
C HYD
PRESS LO
SPOILER SHUTDOWN THIS FAULT SHOWS WHEN THE SCM DOES A SHUTDOWN OF THE SPOILER PANEL IT CONTROLS. A SPOILER SHUTDOWN ALSO SENDS A CAUTION MESSAGE TO THE TOP EICAS DISPLAY.
AMBR DUE TO HYD WHILE IT DETECTS LOW HYDRAULIC PRESSURE. THIS FAULT SHOWS WHEN THE SCM SENDS A CAUTION MESSAGE TO THE TOP EICAS DISPLAY
27-00-13 WIRING THIS FAULT SHOWS WHEN THE SCM DETECTS A FAILURE OF THE HYDRAULIC INPUTS, AND THE HYDRAULIC INPUTS ARE WIRED SO THAT THE SCM ALWAYS DETECTS VALID HYDRAULIC PRESSURE.
SCM ERROR APPLICABLE FOR THAT SHELF POSITION. THIS FAULT SHOWS WHEN A SCM MONITOR DETECTS AN ERROR FOR A SCM THAT IS NOT
NO CSEU POWER TWO PSMs ON ONE SHELF ARE NOT CLOSED. THIS FAULT SHOWS WHEN THE "PSM 1 VALID" AND THE "PSM 2 VALID" LOGIC SIGNALS SENT TO THE SCM ARE FALSE. THIS USUALLY OCCURS WHEN THE CIRCUIT BREAKERS FOR THE
-200 Series SCM - Fault Message Description Figure 13 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-09-00
ALL ú ú 07 Page 39 ú Jun 20/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A14448
A
757 FAULT ISOLATION/MAINT MANUAL
CONTROL SYSTEM ELECTRONICS UNIT
COMPONENT SHT 102 FIG. QTY ACCESS/AREA REFERENCE AMM
CIRCUIT BREAKER - -- FLT COMPT, P11 *
CSEU 1L AC, C1538 1 11C6 *
CSEU 1L DC, C1534 1 11C7 *
CSEU 1R AC, C1536 1 11G17 *
CSEU 1R DC, C15311 1 11G18 *
CSEU 2L AC, C1537 1 11C8 *
CSEU 2L DC, C1533 1 11C9 *
CSEU 2R AC, C1535 1 11G27 *
CSEU 2R DC, C1532 1 11G28 *
FLT CONT ELEC 1L AC, C1538 1 11C6 *
FLT CONT ELEC 1L DC, C1534 1 11C7 *
FLT CONT ELEC 1R AC, C1536 1 11G17 *
FLT CONT ELEC 1R DC, C15312 1 11G18 *
FLT CONT ELEC 2L AC, C1537 1 11C8 *
FLT CONT ELEC 2L DC, C1533 1 11C9 *
FLT CONT ELEC 2R AC, C1535 1 11G27 *
FLT CONT ELEC 2R DC, C1532 1 11G28 *
MODULE - POWER SUPPLY NO. 1 LEFT, M536 1 1 119BL, MAIN EQUIP CTR E3-1 27-09-00
MODULE - POWER SUPPLY NO. 1 RIGHT, M538 1 1 119BL, MAIN EQUIP CTR E4-1 27-09-00
MODULE - POWER SUPPLY NO. 2 LEFT, M537 1 1 119BL, MAIN EQUIP CTR E3-1 27-09-00
MODULE - POWER SUPPLY NO. 2 RIGHT, M539 1 1 119BL, MAIN EQUIP CTR E4-1 27-09-00
MODULE - RUDDER RATIO CHANGER LEFT, M528 1 1 119BL, MAIN EQUIP CTR E3-1 27-09-00
MODULE - RUDDER RATIO CHANGER RIGHT, M529 1 1 119BL, MAIN EQUIP CTR E4-1 27-09-00
MODULE - SPOILER CONTROL NO. 1 LEFT, M530 1 1 119BL, MAIN EQUIP CTR E3-1 27-09-00
MODULE - SPOILER CONTROL NO. 1 RIGHT, M533 1 1 119BL, MAIN EQUIP CTR E4-1 27-09-00
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