2) Make sure the squib electrical pins are not bent or damaged. 3) Connect the electrical connector to the fire bottle squib.
 H. Put the airplane to its usual condition.
 S 865-159
 (1)  
Do the "Put the Air/Ground Relay System Back in the Ground Mode" task (AMM 32-09-02/201).

 S 865-039

 (2)  
Open these circuit breakers:

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

 S 435-322
 (3)  Do the Squib Electrical Connection procedure to connect the squib electrical connectors listed below:
 ~..................................................... | BOTTLE | 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
 NOTE: The color identification is used for the fire extinguishing
____ system of the cargo compartment. The yellow is used to identify the extinguishing agent supply to the forward cargo compartment. The blue is used to identify the extinguishing agent supply to the aft cargo compartment.
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747-400 MAINTENANCE MANUAL
 S 865-042
 (4)  Close these circuit breakers:
 (a)  P6 Main Power Distribution Panel 1) 6H6 FIRE EXTINGUISHER LOWER CARGO 2) 6L4 FLT DECK LIGHT CAPT IND
 S 865-208
 (5)  Remove electrical power if it is not necessary (AMM 24-22-00/201).
 TASK 26-23-00-735-235
 5.  System Test - Nonmetered Fire Extinguisher Discharge Lines__________________________________________________________
 A. Special Tools and Equipment
 (1)  
A26003-7 - Cargo Fire Extinguishing Regulator Test Equipment (one)

 (2)  
Nozzle pressure caps - AN929-8 (Fwd bottle connection)

 (3)  
Nozzle pressure caps - AN929-10 (Aft bottle connection)

 B. Standard Tools and Equipment
 (1)  Regulated source of dry nitrogen (recommended) or dry air (optional)
 -approximately 400 psig
 C. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 26-23-01/401, Lower Cargo Compartment Fire Extinguisher Bottle

 (3)  
AIPC 26-23-11, Fig. 1

 (4)  
WDM 26-23-11 thru WDM 26-23-12

 (5)  
SSM 26-23-01

 D. Access
 (1)  Location Zones 124 Forward Cargo Container Compartment Aft Half 142 Aft Cargo Container Compartment R.H. 221 Control Cabin, LH 222 Control Cabin, RH
 E. Prepare for Test
 S 865-222
 (1)  Supply electrical power (AMM 24-22-00/201).
 F. Forward Non-Metered Discharge Line Test
 S 215-075
 (1)  Make sure all halon distribution tubings from the halon bottle shelf to the lower cargo compartrment are not loosely connected or disconnected.
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 S 035-076
 CAUTION:_______DO NOT PRESSURIZE THE HALON BOTTLES. DAMAGE TO DISCHARGE PORTS CAN OCCUR.
　
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