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 26-14-00
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A
747-400 MAINTENANCE MANUAL
 SMOKE DETECTOR - MAINTENANCE PRACTICES
______________________________________
 1.  General_______
 A.  This procedure replaces the lamp in the smoke detector in the main cargo compartment. There are two tasks in this procedure. One removes the lamp and the other installs the lamp.
 B.  There are a total of thirty two smoke detectors (2 on each zone) throughout the fwd, mid and aft end of the main cargo compartment. Access to the smoke detector is through the main cargo compartment.
 C.  If you think a detector has failed, make sure the lamp is good before you replace the detector.
 TASK 26-14-01-002-001
 2.  Remove Lamp (Fig. 201)___________
 A.  References
 (1)  
AIPC 26-14-01 Fig. 1

 (2)  
WDM 26-16-21 thru WDM 26-16-29

 B.  Access
 (1)  Location Zone 231 Passenger Cabin First To Second Door, LH 241 Passenger Cabin Second to Third Door, LH 251 Passenger Cabin Third to Fourth Door, LH 261 Passenger Cabin Fourth Door to STA 2040, LH 271 Passenger Cabin STA 2040 To STA 2360, LH
 C.  Procedure
 S 862-002
 (1) Open these circuit breakers, and attach DO-NOT-CLOSE identifiers:
 (a)  P7 Overhead Circuit Breaker Panel 1) 7H16 CARGO SMOKE - MAIN DECK ZN 1-8 A 2) 7H17 CARGO SMOKE - MAIN DECK ZN 1-8 B 3) 7H18 CARGO SMOKE - MAIN DECK ZN 9-16 A 4) 7H19 CARGO SMOKE - MAIN DECK ZN 9-16 B
 S 012-012
 (2)  The smoke detectors are throughout the left wall of the main cargo compartment. Refer to the table below.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH REPLACEABLE ú

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747-400
MAINTENANCE MANUAL

MAIN DECK CARGO COMPARTMENT
COVER

CARGO COMPARTMENT SMOKE DETECTOR

A

Smoke Detector Relamping Figure 201
C81193
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH REPLACEABLE ú

 26-14-01
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE MANUAL

 ~................................................................ | CONNECTOR | DETECTOR | LOCATION | .................................................................. | DM5171 | M5171 | DET A - MN DK CARGO SMOKE - ZONE 1 | | DM5172 | M5172 | DET B - MN DK CARGO SMOKE - ZONE 1 | | DM5173 | M5173 | DET A - MN DK CARGO SMOKE - ZONE 2 | | DM5174 | M5174 | DET B - MN DK CARGO SMOKE - ZONE 2 | | DM5175 | M5175 | DET A - MN DK CARGO SMOKE - ZONE 3 | | DM5176 | M5176 | DET B - MN DK CARGO SMOKE - ZONE 3 | | DM5177 | M5177 | DET A - MN DK CARGO SMOKE - ZONE 4 | | DM5178 | M5178 | DET B - MN DK CARGO SMOKE - ZONE 4 | | DM5179 | M5179 | DET A - MN DK CARGO SMOKE - ZONE 5 | | DM5180 | M5180 | DET B - MN DK CARGO SMOKE - ZONE 5 | | DM5181 | M5181 | DET A - MN DK CARGO SMOKE - ZONE 6 | | DM5182 | M5182 | DET B - MN DK CARGO SMOKE - ZONE 6 | | DM5183 | M5183 | DET A - MN DK CARGO SMOKE - ZONE 7 | | DM5184 | M5184 | DET B - MN DK CARGO SMOKE - ZONE 7 | | DM5185 | M5185 | DET A - MN DK CARGO SMOKE - ZONE 8 | | DM5186 | M5186 | DET B - MN DK CARGO SMOKE - ZONE 8 | | DM5187 | M5187 | DET A - MN DK CARGO SMOKE - ZONE 9 | | DM5188 | M5188 | DET B - MN DK CARGO SMOKE - ZONE 9 | | DM5189 | M5189 | DET A - MN DK CARGO SMOKE - ZONE 10| | DM5190 | M5190 | DET B - MN DK CARGO SMOKE - ZONE 10| | DM5191 | M5191 | DET A - MN DK CARGO SMOKE - ZONE 11| | DM5192 | M5192 | DET B - MN DK CARGO SMOKE - ZONE 11| | DM5193 | M5193 | DET A - MN DK CARGO SMOKE - ZONE 12| | DM5194 | M5194 | DET B - MN DK CARGO SMOKE - ZONE 12| | DM5195 | M5195 | DET A - MN DK CARGO SMOKE - ZONE 13| | DM5196 | M5196 | DET B - MN DK CARGO SMOKE - ZONE 13| | DM5197 | M5197 | DET A - MN DK CARGO SMOKE - ZONE 14| | DM5198 | M5198 | DET B - MN DK CARGO SMOKE - ZONE 14| | DM5199 | M5199 | DET A - MN DK CARGO SMOKE - ZONE 15| | DM5200 | M5200 | DET B - MN DK CARGO SMOKE - ZONE 15| | DM5201 | M5201 | DET A - MN DK CARGO SMOKE - ZONE 16| | DM5202 | M5202 | DET B - MN DK CARGO SMOKE - ZONE 16| 2............….............….....................................1
　
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