C. Prepare for Test
S 865-100
(1)
Supply electrical power (AMM 24-22-00/201).
S 755-101
(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 755-002
(3) Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed:
NOTE: Close the system 1 and 2 circuit breakers at the same time.
____
(a) 11B26, FIRE DETECTION CARGO 1 or CARGO SMOKE DET 1
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MAINTENANCE MANUAL
DUAL DETECTORS (RIGHT SIDEWALL)
SMOKE DETECTOR SEE D
TUBING DUAL DETECTORS (CARGO COMPARTMENT CEILING)
SEE C
SMOKE
NO. 1 DETECTOR
CARGO TUBING
DOOR
NO. 2 CARGO DOORFWD
AFT CARGO COMPARTMENT
FWD
FORWARD CARGO COMPARTMENT
BLOWERS
PLENUM
BLOWERS
PLENUM
PLENUM PRESSURE SWITCH
SMOKE DETECTOR INSTALLATION FORWARD CARGO COMPARTMENTPLENUM PRESSURE SWITCH
C SMOKE DETECTOR INSTALLATION AFT CARGO COMPARTMENT
D
Cargo Compartment Smoke Detection System Component Location Figure 501
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757 MAINTENANCE MANUAL
(b)
11B27, FIRE DETECTION CARGO 2 or CARGO SMOKE DET 2
(c)
11S35, FIRE DET CARGO CONT or CARGO SMOKE BLOWER CONT
(d)
11S36, FIRE DET FAN PWR or CARGO SMK BLO
S 755-003
(4) Make sure these circuit breakers on the miscellaneous electrical equipment panel, P70, are closed:
(a)
70B10, SMOKE DET BLOWER 1
(b)
70B11, SMOKE DET BLOWER 2
(c)
70B12, SMOKE DET BLOWER 3
(d)
70B13, SMOKE DET BLOWER 4
D. Do a Test of the Cargo Smoke Detection System
S 865-192
(1)
Push the STATUS switch on the EICAS DISPLAY select panel on the forward electronics panel, P9.
S 865-004
(2)
Push the ECS MSG switch on the EICAS MAINT panel on the right side panel, P61.
S 755-005
(3)
Push and hold the ENG/APU/CARGO switch on the FIRE/OVHT TEST panel, M10445, on the aft pilots control stand, P8.
S 755-006
(4)
Make sure these EICAS messages show on the bottom display:
(a)
FWD CARGO DET 1 and FWD CARGO DET 2
(b)
AFT CARGO DET 1 and AFT CARGO DET 2
S 755-007
(5)
After 2-4 seconds, make sure these indications occur:
(a)
The red FWD and AFT cargo firelights come on.
(b)
The red FIRE light, on the captains instrument panel, P1-3, comes on.
(c)
The EICAS messages FWD and AFT CARGO FIRE show on the top display.
(d)
The red master WARNING lights, on the glareshield panel, P7, come on.
(e)
The fire bell is heard.
(6)
Release the ENG/APU/CARGO switch.
(7)
Make sure the indications go off.
S 865-010
(8)
Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags:
S 865-008
S 755-009
(a) 11B26, FIRE DETECTION CARGO 1 or CARGO SMOKE DET 1
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