SEE E
SEE E
FWD

AFT
MID
13
2
16 SMOKE ZONE 1 10 11
3 4 5 6
9
14
8
15
7
12
SMOKE SMOKE
DETECTORS,
DETECTORS, SMOKE
DETECTORS,  SMOKE
M5185,
M5171,
M5179,  DETECTORS, DETECTORS,
M5186
M5172  SMOKE
M5180  M5195, M5201,SMOKE DETECTORS,
SEE
SMOKE E  M5196 M5202SEE E
DETECTORS, SEE E  M5189,
DETECTORS,  SMOKE
M5175,  M5190 SEE E SEE E
M5181,  DETECTORS,M5176
M5182 SEE E M5191, SEE E M5192
SEE E SEE E PRESSURE SUPPLY
LINE (REFERENCE) VENTURI EJECTORMAIN VACUUMREFLECTED ELECTRONIC MANIFOLDLIGHT
PILOT LAMP OR  CIRCUIT AND (REFERENCE)
LIGHT EMITTING RELAY PHOTO CELL VACUUMDIODE
SENSE LINE
SAMPLE SAMPLE
AIR IN AIR OUT

SMOKE FWD
PARTICLES
PRESSURE TEST LED LIGHT BEAM LIGHT TRAP
SWITCH (ON SOME (ON SOME
AIRPLANES)  AIRPLANES)
MAIN DECK AIR FLOW DETECTION SMOKE DETECTOR M5171-M5202 (32) SWITCH (EJECTOR), S2276,S2277
E F
Main Deck Cargo Compartment Smoke Detection System - Component Location
Figure 102 (Sheet 3)

C80107
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 26-14-00
 ALL  ú ú 05 Page 105 ú Jun 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
ZONE  ST ART  END 
1  STA  240  STA  390 
2  400  590 (1) 
3  580  670 (1) 
4  720  870 (1) 
5  860  970 (1) 
6  1010  1140 
7  1180  1260 
8  1261  1370 
9  1400  1490 
10  1500  1630 
11  1640  1780 (1) 
12 (2)  1770  1940 (1) 
13  1780  1920 (1) 
14  1930  2060 
15  2070  2210 
16  2220  2360 

NOTE:____  1.  SOME OF THE ZONES OVERLAP ONE ANOTHER. 
2.  ZONE 12 IS ONLY FOR THE CARGO DOOR.  DO NOT 
INCLUDE ZONE 12 WHEN YOU DETERMINE WHICH ZONES 
CANNOT BE LOADED WITH COMBUSTIBLE CARGO. 

Main Deck Cargo Compartment Smoke Detector System - Component Location
Figure 102 (Sheet 4)

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 26-14-00
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 ú  03  Page 106
 ú  Feb 10/95 

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E77171
A
747-400 MAINTENANCE MANUAL
 MAIN DECK CARGO COMPARTMENT SMOKE DETECTION SYSTEM -
____________________________________________________ ADJUSTMENT/TEST
_______________
 1.  General_______
 A.  This procedure contains three tasks:
 (1)  
The operational test.

 (2)  
The system test.

 (3)  
The system smoke test.

 B.  There are thirty two smoke detectors in the cargo compartment on the main deck.
 (1)  
The operational test makes sure that the system operates correctly. The test uses a minimum of time and only the equipment installed on the airplane.

 (2)  
The system test makes sure that the system functions correctly. The smoke system test uses a smoke source to make sure the system finds the smoke.

 TASK 26-14-00-715-068
 2.  Operational Test________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AIPC 26-14-01 Fig. 1

 (3)  
AIPC 26-14-10 Fig. 1

 (4)  
AIPC 26-14-51 Fig. 1

 (5)  
WDM 26-16-21 thru WDM 26-16-29

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