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26-11-00
ALL ú ú 01 Page 506 ú Jun 20/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 755-025
(10)
Make sure the yellow FAIL P-RESET light (P8) goes off.
S 755-026
(11)
Make sure the EICAS message FIRE/OVHT SYS does not show on the top display.
S 755-075
(12)
Make sure the EICAS messages L ENG FIRE LP 1 and 2 show on the bottom display.
S 865-027
(13)
Open the circuit breakers on the P11 panel which were closed, in Table 1, and attach DO-NOT-CLOSE identifications.
S 435-028
(14)
Install the printed circuit cards, M681 and M682.
S 865-029
(15)
Remove the DO-NOT-CLOSE tags, and close the circuit breakers on the P11 panel which were opened, in Table 1.
NOTE: The two circuit breakers must be closed at the same time.
____
S 715-030
(16)
Do the test again for the Right Fire Detection System. Use the circuit breakers and the printed circuit cards for the right engine fire detection system as listed in Table 1.
(17)
Put the airplane back to its usual condition.
S 865-031
TASK 26-11-00-735-032
3. System Test - Engine Fire Detection System__________________________________________
A. References
(1) AMM 24-22-00/201, Electrical Power - Control
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-11-00
ALL ú ú 01 Page 507 ú Jun 20/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(2)
AMM 71-11-04/201, Fan Cowl Panels
(3)
AMM 78-31-00/201, Thrust Reverser System
B. Access
(1)
Location Zones
119/120 Main Equipment Center
211/212 Flight Compartment
410 No. 1 Power Plant (L)
420 No. 2 Power Plant (R)
(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)
C. Prepare for Test
S 865-034
(1) 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 015-241
WARNING: OBEY THE PRECAUTIONS FOR THE KEVLAR WRAPPING WHEN YOU OPEN
_______ THE FAN COWL PANEL. IF THE PRECAUTIONS ARE NOT OBEYED, DAMAGE TO THE KEVLAR WRAPPING CAN OCCUR.
(2) Open the fan cowl panels (AMM 71-11-04).
S 015-036
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3) Do this procedure: Thrust Reverser Deactivation for Ground
Maintenance (AMM 78-31-00/201).
S 015-085
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______ THRUST REVERSER. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(4) Open the thrust reversers (AMM 78-31-00/201).
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