(4)  
Release the manual override button.

 S 865-072
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-23-00
 ALL  ú ú 02 Page 506 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 735-073
 (5)  
Make sure the DISCH light on the fire control module M7326 (P5) goes off.

 S 735-074

 (6)  
Make sure the advisory and the status messages goes out of view on the EICAS screen.

 S 865-347

 (7)  
Remove the electrical power if it is not necessary
 (AMM 24-22-00/201).

 TASK 26-23-00-735-013
 4.  System Test - Squib Discharge Circuit_____________________________________
 A. Special Tools and Equipment
 (1)  G26001-105, Squib Test Box
 NOTE:____Adapter cables are included with the squib test box. Refer to drawing number G26001 for the applicable adapters and connectors for the cargo fire bottle squibs.
 B. Standard Tools and Equipment
 (1)  
Voltmeter - with a 10k ohm or greater
 resistance

 (2)  
Multimeter

 (3)  
Squib Protective Covers

 M83723/60-208-AN or -AC (Fwd squib)
 M83723/60-210-AN or -AC (Aft squib)

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

 (2)  
AMM 32-09-02/201, Air/Ground Relay System

 (3)  
AMM 20-41-02/201, Electrostatic Discharge Sensitive Devices

 (4)  
AIPC 26-23-11, Fig. 1

 (5)  
WDM 26-23-11 thru WDM 26-23-12

 (6)  
SSM 26-23-01

 D. Access
 (1)  Location Zone 124 Forward Cargo Container Compartment Aft Half 142 Aft Cargo Container Compartment R.H. 221 Control Cabin, LH 222 Control Cabin, RH
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-23-00
 ALL  ú ú 02 Page 507 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 E. Prepare for Test
 S 865-303
 WARNING: DO NOT TOUCH THE SQUIB BEFORE YOU DO THE PROCEDURES FOR DEVICES
_______ THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE THE FIRE BOTTLE TO RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Before you touch the squib, do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).

 S 865-014

 (2)  
Open the these circuit breakers:

 (a)  P6 Main Power Distribution Panel
 1) 6H6 FIRE EXTINGUISHER LOWER CARGO
 2) 6L4 FLT DECK LIGHT CAPT IND

 S 035-316
 (3)  Disconnect the electrical connectors listed below:
 ~.................................................... | BOTTLE *[1] | ELECTRICAL CONNECTOR | ...................................................... | BOTTLE A FWD SQUIB | DM7906B | ...................................................... | BOTTLE A AFT SQUIB | DM7906C | ...................................................... | BOTTLE B FWD SQUIB | DM7907B | ...................................................... | BOTTLE B AFT SQUIB | DM7907C | ...................................................... | BOTTLE C FWD SQUIB | DM7908B | ...................................................... | BOTTLE C AFT SQUIB | DM7908C | ...................................................... | BOTTLE D FWD SQUIB | DM6742B | ...................................................... | BOTTLE D AFT SQUIB | DM6742C | 2.........................…..........................1 *[1] The fire bottles A, B, C, and D are installed in the forward
 lower cargo compartment.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-23-00
 ALL  ú ú 08 Page 508 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
中國航空網(wǎng) www.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 防火 FIRE PROTECTION 2(116)