757 MAINTENANCE MANUAL
6) The red master WARNING lights, on glareshield panel P7, come on.
7) The fire bell sounds, on the flight compartment aural warning speakers.
8) The amber master CAUTION lights, on glareshield panel P7, come on (inhibited when both fuel control switches are in cutoff).
9) The caution annunciation owl tone sounds, on the flight compartment aural warning speakers (inhibited when both fuel control switches are in cutoff).
(b) When the ENG switch is released, all messages and indications should clear - except for any faulty-loop messages which will remain on EICAS. The FAIL P-RESET switchlight, and EICAS advisory message - FIRE/OVHT SYS, will also remain on if there is a dual-loop failure.
(4) The manual system test and power-up/power-interrupt mode will not invalidate an alarm in progress.
C. Control_______
(1) Turn-on procedure:
(a)
Provide electrical power (Ref 24-22-00).
(b)
Check that the following overhead panel P11 circuit breakers are closed: 1) 11B20, FIRE DETECTION L ENGINE 1 2) 11B21, FIRE DETECTION L ENGINE 2 3) 11B22, FIRE DETECTION R ENGINE 1 4) 11B23, FIRE DETECTION R ENGINE 2 5) 11J26, FIRE DET ALTN PWR ENGINE LEFT 6) 11J27, FIRE DET ALTN PWR ENGINE RIGHT
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
FAULT ISOLATION/MAINT MANUAL
STRUT OVERHEAT DETECTION SYSTEM
COMPONENT FIG. SHT 102 QTY ACCESS/AREA AMM REFERENCE
CARD 4 - (FIM 26-10-00/101)
FIRE/OVHT LOGIC/TEST, M10425
CARD 5 - (FIM 26-10-00/101)
FIRE/OVHT LOGIC/TEST, M10426
CIRCUIT BREAKERS -- FLT COMPT, P11
FIRE DET ALTN PWR ENGINE LEFT, C763 1 11J26 *
FIRE DET ALTN PWR ENGINE RIGHT, C764 1 11J27 *
FIRE DETECTION L ENGINE 1, C774 1 11B20 *
FIRE DETECTION L ENGINE 2, C783 1 11B21 *
FIRE DETECTION R ENGINE 1, C775 1 11B22 *
FIRE DETECTION R ENGINE 2, C784 1 11B23 *
COMPUTER - (FIM 31-41-00/101)
EICAS L, M10181
EICAS R, M10182
LIGHT - L ENG OVHT, YQNL001 -- 1 FLT COMPT, P8, ENG FIRE CONT PNL, *
M10443
LIGHT - R ENG OVHT, YQNL003 -- 1 FLT COMPT, P8, ENG FIRE CONT PNL, *
M10443
PANEL - (FIM 26-21-00/101)
ENGINE FIRE CONTROL, M10443
PANEL - (FIM 26-11-00/101)
FIRE/OVHT TEST, M10445
SWITCH - ENG TEST YQQS002 -- 1 FLT COMPT, P8, FIRE/OVHT TEST *
PNL, M10445
SWITCH - LEFT STRUT OVHT/SW -- 6 430, LEFT ENG STRUT 26-12-01
NO. 1, LOOP 1, S10194 432AL
NO. 2, LOOP 1, S10195 432AL
NO. 3, LOOP 1, S10196 432AL
NO. 2, LOOP 2, S10197 432AL
NO. 1, LOOP 2, S10198 433LR
NO. 3, LOOP 2, S10199 433LR
SWITCH - RIGHT STRUT OVHT SW -- 6 440, RIGHT ENG STRUT 26-12-01
NO. 2, LOOP 1, S10200 442AL
NO. 1, LOOP 1, S10201 442AL
NO. 3, LOOP 1, S10202 442AL
NO. 2, LOOP 2, S10203 442AL
NO. 1, LOOP 2, S10204 443AL
NO. 3, LOOP 2, S10205 443AL
* SEE THE WDM EQUIPMENT LIST
Strut Overheat Detection System - Component Index
Figure 101
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 FAULT ISOLATION/MAINT MANUAL
433DL
STRUT OVERHEAT SWITCHES, S10194 THRU S10205
SEE B
STRUT
SEE A
STRUT
P11 PANEL A
ENG FIRE/OVHT TEST SWITCH, YQQS002
FIRE/OVHT TEST
SYS FAILWHL
ENG/APU WELL
ENG CARGO
A
FAIL
P-RESET
FIRE/OVHT TEST PANEL, ENGINE FIRE CONTROL
M10445 (REF)
P8 PANEL
PANEL, M10443 (REF)
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