(e)  
The master CAUTION lights, on P7, come on.

 S 755-009
 (4)
Release the ENG test switch and make sure the indications stop.

 S 865-060

 (5)  
Close these circuit breakers on the P6 panel and remove the DO-NOT-CLOSE tags:

 (a)  
6C1, FUEL COND CONT L

 (b)  
6C2, FUEL COND CONT R

 (6)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 865-010
 TASK 26-12-00-735-011
 3. System Test - Strut Overheat Detection System
_____________________________________________
 A. References
 (1) AMM 06-43-00/201, Engine Nacelle Access Doors and Panels
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757
MAINTENANCE MANUAL

 (2)  
AMM 24-22-00/201, Electrical Power Control

 (3)  
AMM 31-41-00/501, Engine Indication and Crew Alerting System (EICAS)

 (4)  
AMM 31-51-00/501, Warning System

 (5)  
AMM 33-16-00/501, Master Dim and Test

 B. Access
 (1)  
Location Zones
 119/120 Main Equipment Center
 200 Upper Half of Fuselage
 211/212 Flight Compartment
 430/440 Engine No. 1/No. 2 Nacelle strut

 (2)  
Access Panels
 413, 423 L, R Fan Cowl Panel (Left)
 414, 424 L, R Fan Cowl Panel (Right)
 415, 425 L, R Fan Reverser (Left)
 416, 426 L, R Fan Reverser (Right)
 432AL/433JR/433LR Left Strut - No. 1 Engine
 442AL/443HL/443LL Right Strut - No. 2 Engine

 C. Prepare for Test
 S 865-012
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 035-014

 (2)  
Remove the strut access panels (AMM 06-43-00/201).

 S 755-013

 (3)  
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 865-063
 (4)  Open these circuit breakers on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags:
 (a)  
11J26, FIRE DET ALTN PWR ENGINE LEFT

 (b)  
11J27, FIRE DET ALTN PWR ENGINE RIGHT

 S 865-064
 (5)  Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags:
 (a)  6C1, FUEL COND CONT L
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
 (b)  6C2, FUEL COND CONT R
 D. Do a Test of the Strut Overheat Detection System
 S 865-015
 (1)  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

 (c)  
11B22, FIRE DETECTION R ENGINE 1

 (d)  
11B23, FIRE DETECTION R ENGINE 2

 S 755-016
 (2)  Make sure these indications occur:
 (a)  
The SYS FAIL light is not on (on P8).

 (b)  
The L and R ENG OVHT lights are not on (on P8).

 (c)  
The EICAS messages L and R ENG OVHT do not show on the top display.

 S 865-017
 (3)  
Push the ECS MSG switch on the EICAS maintenance panel, P61.

 S 755-018

 (4)  
Make sure the EICAS message STRUT OH DET or ENG OH LP do not show on the bottom display.

 S 865-019

 (5)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel at the same time:

 (a)  
11B20, FIRE DETECTION L ENGINE 1
　
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