EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-11-00
ALL ú ú 06 Page 11 ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
(4) Manual system test:
(a) When the ENG/APU/CARGO switch on the fire/overheat test panel (on P8) is pressed and held, the engine, APU, and cargo detection systems go through a self-test. All loop messages are displayed on EICAS. The ECS/MSG switch is used to advance to the next EICAS page in order to display all EICAS messages. After a two to four-second delay, a successful test terminates with all fire and overheat indications displayed. The engine indications are: 1) The red LEFT and RIGHT fire switch handles light up, and
unlock (on P8). 2) The red L and R FUEL CONTROL switches light up (on P10). 3) The red FIRE light comes on (on P1-3). 4) The amber L and R ENG OVHT lights come on (on P8). 5) EICAS displays L and R ENGINE FIRE (warnings), and L and R
ENG OVHT (cautions). 6) The red master WARNING lights come on (on P7). 7) The fire bell sounds on the aural warning speakers.
(b) When the ENG/APU/CARGO 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 fault.
(5) The manual system test and power-up 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 circuit breakers on overhead circuit breaker panel P11 are closed: 1) FIRE DETECTION L ENGINE 1 and 2 2) FIRE DETECTION R ENGINE 1 and 2 3) FIRE DET ALTN PWR ENGINE LEFT and RIGHT
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-11-00
ALL ú ú 03 Page 12 ú Dec 20/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 FAULT ISOLATION/MAINT MANUAL
ENGINE FIRE DETECTION SYSTEM
COMPONENT FIG. 102 SHT QTY ACCESS/AREA AMM REFERENCE
CARD 1 - FIRE/OVHT LOGIC/TEST, M10224 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD 2 - FIRE/OVHT LOGIC/TEST, M10274 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD - LOOP 1 L ENG FIRE DET, M681 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD - LOOP 2 L ENG FIRE DET, M682 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD - LOOP 1 R ENG FIRE DET, M683 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD - LOOP 2 R ENG FIRE DET, M684 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD - LOOP 1 L NACELLE OVHT DET, M10229 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD - LOOP 2 L NACELLE OVHT DET, M10276 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD - LOOP 1 R NACELLE OVHT DET, M10230 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CARD - LOOP 2 R NACELLE OVHT DET, M10275 1 1 119BL MAIN EQUIP CTR, P54 26-10-01
CIRCUIT BREAKER - 1 FLT COMPT, P11
FIRE DET ALIN PWR ENG L, C763 1 11J26 *
FIRE DET ALTN PWR ENG R, C764 1 11J27 *
FIRE DETECTION L ENG 1, C774 1 11B20 *
FIRE DETECTION L ENG 2, C783 1 11B21 *
FIRE DETECTION R ENG 1, C775 1 11B22 *
COMPUTER - (FIM 31-41-00/101) EICAS R, M10182 EICAS L, M10181 FIRE DETECTION R ENG 2, C784 1 11B23 *
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