757
FAULT ISOLATION/MAINT MANUAL
SENSING
ELEMENTS
D
Engine Fire Detection System - Component Location (Details from Sht 2)
Figure 102 (Sheet 3)
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757 MAINTENANCE MANUAL
ENGINE FIRE AND OVERHEAT DETECTION SYSTEM - ADJUSTMENT/TEST
___________________________________________________________
1. General_______
A. This section contains procedures to do an operational test and a system test of the engine fire and overheat detection system.
(1)
The operational test will make sure the system operates correctly in a minimum of time. Only equipment installed in the plane will be used.
(2)
The system test increases the function of the operational test. The system test will make sure that all of the necessary operations of the system occur correctly.
TASK 26-11-00-715-001
2. Operational Test - Engine Fire Detection System_______________________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 31-41-00/501, Engine Indication and Crew Alerting System (EICAS)
(3)
AMM 31-51-00/501, Warning System
(4)
AMM 33-16-00/501, Master Dim and Test
B. Access
(1)
119/120 Main Equipment Center
(2)
211/212 Flight Compartment
C. Prepare for the Test
S 865-002
(1)
Supply electrical power (AMM 24-22-00/201).
S 755-003
(2)
Make sure these systems operate:
(a)
EICAS (AMM 31-41-00/501).
(b)
Warning System (AMM 31-51-00/501).
(c)
Master Dim and Test System (AMM 33-16-00/501).
S 865-004
(3) Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags:
(a)
6C1, FUEL COND CONT L
(b)
6C2, FUEL COND CONT R
(c)
6H1, FIRE EXTINGUISHING ENG L BTL 1
(d)
6H2, FIRE EXTINGUISHING ENG L BTL 2
(e)
6H3, FIRE EXTINGUISHING ENG R BTL 1
(f)
6H4, FIRE EXTINGUISHING ENG R BTL 2
S 865-005
(4) Open these circuit breakers on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags:
(a)
11B20, FIRE DETECTION L ENGINE 1
(b)
11B21, FIRE DETECTION L ENGINE 2
(c)
11B22, FIRE DETECTION R ENGINE 1
(d)
11B23, FIRE DETECTION R ENGINE 2
(e)
11B24, FIRE DETECTION APU 1
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(f)
11B25, FIRE DETECTION APU 2
(g)
11B26, FIRE DETECTION CARGO 1
(h)
11B27, FIRE DETECTION CARGO 2
(i)
11J24, FIRE DET ALTN PWR CARGO
(j)
11J25, FIRE DET ALTN PWR APU
(k)
11J26, FIRE DET ALTN PWR ENGINE LEFT
(l)
11J27, FIRE DET ALTN PWR ENGINE RIGHT
(m)
11D7, ENGINES STBY IGN LEFT 1
(n)
11D8, ENGINES STBY IGN LEFT 2
(o)
11D9, ENGINES STBY IGN RIGHT 1
(p)
11D10, ENGINES STBY IGN RIGHT 2
(q)
11D19, ENGINES START CONT LEFT
(r)
11D20, ENGINES START CONT RIGHT
(s)
11L1, LEFT ENGINES STBY IGN 1
(t)
11L28, RIGHT ENGINES STBY IGN 1
D. Do a Test of the Left Engine Fire Detection System
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