S 755-175

 (23)
 Make sure these indications occur:

 (a)  
The yellow FAIL P-RESET switchlight goes off.

 (b)  
The EICAS message FIRE/OVHT SYS does not show on the top display.

 (c)  
The EICAS messages AFT CARGO DET 1 and AFT CARGO DET 2 show on the bottom display.

 S 865-176
 (24)
 Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags:

 (a)  
11B26, FIRE DETECTION CARGO 1 or CARGO SMOKE DET 1

 (b)  
11B27, FIRE DETECTION CARGO 2 or CARGO SMOKE DET 2

 (25)
 Connect the electrical connector, D4406, to the detector, M10460.

 (26)
 Connect the electrical connector, D4408, to the detector, M10461.

 S 035-177
 S 035-178
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757 MAINTENANCE MANUAL
 S 865-179
 (27) Remove the DO-NOT-CLOSE tags and close these circuit breakers, on the panel P11, at the same time:
 (a)  
11B26, FIRE DETECTION CARGO 1 or CARGO SMOKE DET 1

 (b)  
11B27, FIRE DETECTION CARGO 2 or CARGO SMOKE DET 2

 S 755-180
 (28)
 Make sure the EICAS messages AFT CARGO DET 1 and AFT CARGO DET 2 do not show on the bottom display.

 S 865-087

 (29)
 Remove electrical power if is not necessary (AMM 24-22-00/201).

 TASK 26-16-00-735-102
 3.  System Test - Smoke Detection Vacuum Test_________________________________________
 A. Equipment
 (1)  Gage, Vacuum - Hand-held, 0-10 inches of water.
 DWYER INSTRUMENTS INC., MICHIGAN CITY, INDIANA,
 or equivalent.

 B. 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 System

 (5)  
AMM 52-34-00/201, No. 1 and No. 2 Cargo Doors

 C. Access
 (1)  Location Zones
 121/122 Forward Cargo Compartment
 153/154 Aft Cargo Compartment
 211/212 Flight Compartment

 D. Prepare for Test
 S 865-089
 (1)  
Supply electrical power (AMM 24-22-00/201).

 (2)  
Open applicable cargo door (AMM 52-34-00/201).

 S 755-090

 (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 015-214
 S 755-091
 (4)  Make sure these circuit breakers on the overhead circuit breaker panel, P11, are closed:
 (a)
11B26, FIRE DETECTION CARGO 1 or CARGO SMOKE DET 1

 (b)
11B27, FIRE DETECTION CARGO 2 or CARGO SMOKE DET 2

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757 MAINTENANCE MANUAL
 (c)  
11S35, CARGO SMOKE BLOWER CONT or FIRE DET CARGO CONT

 (d)  
11S36, FIRE DET FAN PWR or CARGO SMK BLO

 S 755-092
 (5)  Make sure these circuit breakers on the miscellaneous relay 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

 S 015-215
 (6)  Open forward and aft cargo doors (AMM 52-34-00/201).
 E. Smoke Detection Vacuum Test
 S 865-094
 (1)
Put the EICAS COMPUTER select switch (on P9) to the AUTO position.
　
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