26-11-00
ALL ú ú 01 Page 508 ú Sep 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
D. Do a Test of the Nacelle Overheat System:
S 865-038
(1) Open these P11 panel circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags:
(a)
11B20, FIRE DETECTION L ENGINE 1
(b)
11B21, FIRE DETECTION L ENGINE 2
S 035-125
(2) Prepare the detectors.
(a)
Disconnect the electrical connectors, D2122 and D2402, from the nacelle overheat detectors, TS5064 and TS5065.
(b)
Connect a jumper wire between pins A and D on connectors D2122 and D2402.
S 865-043
(3) Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel:
NOTE: Both of the circuit breakers must be closed at the same time.
____
(a)
11B20, FIRE DETECTION L ENGINE 1
(b)
11B21, FIRE DETECTION L ENGINE 2
S 755-044
(4) Make sure these indications occur:
(a)
The caution annunciation is heard.
(b)
The yellow L ENG OVHT light, on P8, comes on.
(c)
The EICAS message L ENG OVHT shows on the top display.
1) The EICAS messages L ENG OH LP 1 and L ENG OH LP 2 show on the bottom display.
(d)
The yellow master CAUTION lights, on P7, come on.
S 865-045
(5) Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags:
(a)
11B20, FIRE DETECTION L ENGINE 1
(b)
11B21, FIRE DETECTION L ENGINE 2
S 425-126
(6) Return the detectors to normal.
(a) Remove the jumper wires from connector D2122 and D2402.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-11-00
ALL ú ú 01 Page 509 ú Jan 20/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(b) Connect the electrical connector, D2122, to TS5064 and the electrical connector, D2402, to TS5065.
E. Do a Test of the Fire Detector.
S 845-132
(1) AIRPLANES WITH ROLLS ROYCE ENGINES AND SYSTRON-DONNER FIRE
DETECTORS;
Prepare the detectors.
(a)
Disconnect electrical connectors, D1406 and D1408, from the engine fire detectors, TS5037 and TS5036.
(b)
Connect a jumper wire between pins A and D on electrical connectors D1406 and D1408.
S 845-190
(2) AIRPLANES WITH ROLLS ROYCE ENGINES AND GRAVINER FIRE DETECTORS; Prepare the detectors.
(a)
Disconnect electrical connectors, D1450 and D1452, from the engine fire detectors, TS5148 and TS5147.
(b)
Connect a jumper wire between the center conductor of fire detector TS5148 and ground.
(c)
Connect a jumper wire between the center conductor of the fire detector, TS5147, and ground.
S 865-055
(3) Remove the DO-NOT-CLOSE tags, and close these circuit breakers on the P11 panel:
NOTE: Close the two circuit breakers at the same time.
____
(a)
11B20, FIRE DETECTION L ENGINE 1
(b)
11B21, FIRE DETECTION L ENGINE 2
S 755-056
(4) Make sure these indications occur:
(a)
The red LEFT engine fire handle light, on P8, comes on.
(b)
The red L FUEL CONTROL switch light, on the quadrant control stand, P10, comes on.
(c)
The red FIRE light, on the captains instrument panel, P1-3, comes on.
(d)
The EICAS message L ENGINE FIRE shows on the top display.
(e)
The EICAS messages L ENG FIRE LP 1 and L ENG FIRE LP 2 show on the bottom display.
(f)
The red master WARNING lights, on the glareshield panel, P7, comes on.
(g)
The fire bell is heard.
S 865-057
(5) Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags:
(a) 11B20, FIRE DETECTION L ENGINE 1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 防火 FIRE PROTECTION 1(23)
