26-16-00
 ALL  ú ú 09 Page 530 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 865-188
 (11) Release the pressure from the pneumatic crossover duct (AMM 36-00-00/201).
 TASK 26-16-00-735-261
 9. Put the Airplane Back to Its Usual Condition
 A. Do the following steps:
 S 845-078
 (1)  
Remove the DO-NOT-CLOSE tags and close the circuit breakers opened in the "Prepare for System Test" procedure.

 S 845-066

 (2)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-16-00
 ALL  ú ú 08 Page 531 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 SMOKE DETECTOR - MAINTENANCE PRACTICES
______________________________________
 1.  General_______
 A.  The maintenance practices procedure contains two tasks. The first task removes the lamp in the smoke detector in the lower cargo compartment. The second task installs the lamp in the smoke detector in the lower cargo compartment.
 B.  There are eight smoke detectors in the right side of the forward lower cargo compartment. There are eight more smoke detectors in the right side of the aft lower cargo compartment. You can get access to the smoke detectors through the lower cargo compartment.
 C.  If there is an indication that a detector does not work correctly, do a check of the lamp before you replace the detector.
 TASK 26-16-01-002-001
 2.  Remove the Lamp (Fig. 201)_______________
 A.  References
 (1)  
AIPC 26-16-01, Fig. 1

 (2)  
AIPC 26-16-01, Fig. 2

 (3)  
WDM 26-16-11 through WDM 26-16-16

 B.  Access
 (1)  Location Zones 122 Forward Cargo Container Compartment Forward Half RH 142 Aft Cargo Compartment RH
 C.  Procedure
 S 862-002
 (1)  Open these circuit breakers on the overhead circuit breaker panel, P7, and attach DO-NOT-CLOSE tags:
 (a)  
7H14, CARGO SMOKE DETECT LWR A

 (b)  
7H15, CARGO SMOKE DETECT LWR B

 S 012-003
 (2)  Get access to the applicable smoke detector through the lower cargo compartment.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH SMOKE DETECTORS ú

 26-16-01
 WITH REPLACEABLE LAMPS  ú ú 05 Page 201 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

FORWARD CARGO
AFT CARGO
COMPARTMENT
COMPARTMENT
2 SMOKE DETECTORS
2 SMOKE DETECTORS
EACH ZONE (QTY 8)
EACH ZONE (QTY 8)
SEE A
SEE A
COVER 
SCREW 
(6 LOCATIONS) 
GASKET 
ELECTRONICS  LENS AND 
ASSEMBLY  LAMP HOLDER 
LAMP 
SPARE LAMPS 

DETECTOR
CARGO COMPARTMENT SMOKE DETECTOR A
Smoke Detector Relamping Figure 201
E00983
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH SMOKE DETECTORS ú

 26-16-01
 WITH REPLACEABLE LAMPS  ú ú 02 Page 202 ú Feb 10/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 032-016
 (3)  Disconnect the applicable electrical connector in the table that follows:
 ~................................................................ | CONNECTOR | DETECTOR | LOCATION | .................................................................. | DM7898 | M7898 | DET A - FWD CARGO SMOKE - ZONE 1 | | DM7899 | M7899 | DET B - FWD CARGO SMOKE - ZONE 1 | | DM7900 | M7900 | DET A - FWD CARGO SMOKE - ZONE 2 | | DM7901 | M7901 | DET B - FWD CARGO SMOKE - ZONE 2 | | DM4893 | M4893 | DET A - FWD CARGO SMOKE - ZONE 3 | | DM4894 | M4894 | DET B - FWD CARGO SMOKE - ZONE 3 | | DM4895 | M4895 | DET A - FWD CARGO SMOKE - ZONE 4 | | DM4896 | M4896 | DET B - FWD CARGO SMOKE - ZONE 4 | | DM4897 | M4897 | DET A - AFT CARGO SMOKE - ZONE 1 | | DM4898 | M4898 | DET B - AFT CARGO SMOKE - ZONE 1 | | DM4899 | M4899 | DET A - AFT CARGO SMOKE - ZONE 2 | | DM4900 | M4900 | DET B - AFT CARGO SMOKE - ZONE 2 | | DM7902 | M7902 | DET A - AFT CARGO SMOKE - ZONE 3 | | DM7903 | M7903 | DET B - AFT CARGO SMOKE - ZONE 3 | | DM7904 | M7904 | DET A - AFT CARGO SMOKE - ZONE 4 | | DM7905 | M7905 | DET B - AFT CARGO SMOKE - ZONE 4 | 2............….............….....................................1
　
中國(guó)航空網(wǎng) m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 防火 FIRE PROTECTION 1(124)