S 865-017
(5)
Supply the electrical power if not already accomplished
(AMM 24-22-00/201).
S 865-018
(6)
Close this circuit breaker:
(a) P6 Main Power Ditribution Panel
1) 6L4 FLT DECK LIGHT CAPT IND
F. Cargo Fire Extinguisher Bottle Squib Discharge Circuit Test
S 865-305
(1)
Close this circuit breaker:
(a) P6 Main Power Distribution Panel
1) 6H6 FIRE EXTINGUISHER LOWER CARGO
(2)
Make sure the airplane is in the Ground Mode (AMM 32-09-02/201).
S 865-306
NOTE: Place the airplane on the Ground mode to bypass the 30 minute
____ time delay for the check of bottles C and D. This step is not necessary for the check of bottles A and B.
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(3) S 865-019Make sure the FWD ARMED, AFT ARMED and DISCH lights on the fire control module M7326 on the P5 pilots' overhead panel are off.
(4) S 865-020Set the toggle switch on the squib test box to OFF position.
(5) S 485-021Connect the electrical connector DM7906B, for the bottle A forward squib, to the squib test box.
(6) S 485-022Connect the multimeter to the squib test box.
(7) S 865-023Push the FWD (AFT) ARMED switch to ON.
(8) S 735-024Make sure the FWD (AFT) ARMED switch is on.
(9) S 865-025Push and hold the DISCH switch.
S 735-026
(10)
Make sure the BOTTLE DISCHARGE light on the squib test box is on. S 975-027
(11)
Write the voltage shown on the multimeter (V1). S 865-028
(12)
Set the toggle switch on the squib test box to ON position. S 975-029
(13)
Write the voltage shown on the multimeter (V2).
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MAINTENANCE MANUAL
S 865-030
(14) Release the DISCH switch and make sure that the multimeter indication goes to zero.
(a) On Bottles A (B), 1) Make sure that the multimeter indication goes to zero.
S 865-301
(15)
Open the circuit breaker 6H6 FIRE EXTINGUISHER LOWER CARGO on the P6 Main Power Distribution Panel.
S 865-031
(16)
Push the FWD (AFT) ARMED switch to off.
(a) On Bottles C (D), 1) Make sure that the multimeter indication goes to zero.
S 735-032
(17)
Make sure the FWD ARMED, AFT ARMED and DISCH switch light are off.
S 735-146
(18)
Make sure the voltage is zero.
S 085-033
(19)
Disconnect the electrical connector from the squib test box.
S 735-318
(20)
Make sure the voltage V2 is not less than the value in the following table corresponding to the voltage V1 measured.
~................................
| V1 | V2 |
..................................
| 30.0 - 32.0 | 20.0 |
..................................
| 28.0 - 29.99 | 18.6 |
..................................
| 26.0 - 27.99 | 17.0 |
..................................
| 24.0 - 25.99 | 15.8 |
..................................
| 22.0 - 23.99 | 14.4 |
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本文鏈接地址：747-400 AMM 飛機維護手冊 防火 FIRE PROTECTION 2(117)
