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747-400 MAINTENANCE MANUAL
 TASK 26-14-00-735-067
 3.  Main Deck Cargo Smoke Detection System Test___________________________________________
 A. Special Tools and Equipment
 (1)  
Rosco Fog/Smoke Machine - Model 1600 or equiv.
 Rosco Laboratories Inc.
 52 Harbor View Avenue
 Stamford, CT 06902
 Phone: 800-767-2669 or 203-709-8900
 Fax: 203-709-8919
 (Preferred source)

 (2)  
Ventilation Smoke Tube (Part #458481)
 Mine Safety Appliance Co.

 P.O. Box 426
 Pittsburgh, PA 15230
 Phone: (412) 967-3000

 (3)  
Hot Wire Anemometer (Air Velocity Meter) - Model 1650, 8350, 8352, 8357, or 8360 TSI Incorporated 500 Cardigan Road Shoreview, Minnesota 55216 Mailing Address:

 P.O. Box 64394
 St. Paul, Minnesota 55164
 Telephone Number: 800-876-9874
 Fax Number: 612-490-2874

 (4)  
G26005-9 - Adaptor, Hot Wire Anemometer, Boeing

 B.
Standard Tools and Equipment

 (1)  
Voltmeter

 (2)  
Vacuum Gauge - hand held, 0-180 inches of water (0-15 inches of mercury)

 C.
References

 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 36-00-00/201, Pneumatic System

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MAINTENANCE MANUAL

 (3)  
AIPC 26-16-01 Fig. 1

 (4)  
AIPC 26-16-01 Fig. 2

 (5)  
WDM 26-16-11 through WDM 26-16-16

 D. Access
 (1)  Location Zone
 221 Control Cabin LH
 222 Control Cabin RH

 E. Prepare for the System Test
 S 865-027
 (1)  Open these circuit breakers and attach a DO-NOT-CLOSE tag:
 (a)  P6 Main Power Distribution Panel 1) 6H1 FIRE EXTINGUISHER ENG 1&3 B 2) 6H2 FIRE EXTINGUISHER 1&3 A 3) 6H3 FIRE EXTINGUISHER 2&4 B 4) 6H4 FIRE EXTINGUISHER ENG 2&4 A 5) 6H5 FIRE EXTINGUISHER APU 6) 6H6 FIRE EXTINGUISHER LOWER CARGO
 S 865-300
 (2)  
Supply electrical power (AMM 24-22-00/201).

 S 865-028

 (3)  
Close these circuit breakers:

 (a)  P7 Overhead Circuit Breaker Panel 1) 7F23 LANDING GEAR DSP & CONT ALTN 2) 7H16 CARGO SMOKE - MAIN DECK ZN 1-8 DET A 3) 7H17 CARGO SMOKE - MAIN DECK ZN 1-8 DET B 4) 7H18 CARGO SMOKE - MAIN DECK ZN 9-16 DET A 5) 7H19 CARGO SMOKE - MAIN DECK ZN 9-16 DET B
 F. Two Disconnected Connectors Smoke Detector Test
 S 865-070
 (1)  Open these circuit breakers:
 (a)  P7 Overhead Circuit Breaker Panel 1) 7H16 CARGO SMOKE - MAIN DECK ZN 1-8 DET A
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747-400 MAINTENANCE MANUAL
 2)  7H17 CARGO SMOKE - MAIN DECK ZN 1-8 DET B
 (2)  S 035-135Disconnect the two electrical connectors DM5171 and DM5172 from the smoke detectors on the main deck cargo compartment.
 (3)  S 865-107Close these circuit breakers: (a) P7 Overhead Circuit Breaker Panel 1) 7H16 CARGO SMOKE - MAIN DECK ZN 1-8 DET A 2) 7H17 CARGO SMOKE - MAIN DECK ZN 1-8 DET B
 (4)  S 715-072Make sure that the arm switch lights on the fire control module M7326 are off.
 (5)  S 865-073Push and hold the FIRE/OVHT TEST switch on the P5 panel.
 (6)  S 715-074When the FIRE/OVHT TEST is closed for approximately ten seconds, make sure that the EICAS messages "FIRE TEST FAIL" and "FIRE MN DK FWD" show.
 (7)  S 715-075Look for these flight deck effects: (a) The MAIN DECK CARGO warning light on the fire control module M7326 (P5) comes on. (b) The master WARNING lights come on. (c) The alarm bell operates in the flight deck.
　
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