S 865-008
(3)
Select "<GROUND TESTS" by pressing line select key next to it.
S 865-009
(4)
Select "<26 FIRE PROTECTION" from the menu.
S 865-226
(5)
Press the LINE SELECT key for FIRE SYSTEM TEST.
S 745-011
(6)
The "IN PROGRESS" indication will show for the duration of the test.
S 745-012
(7)
When the test is finished, the screen will show "PASS" or "FAIL>".
S 745-013
(8)
If the indication is "PASS", the test is finished.
S 745-223
(9)
If FAIL> is shown on the CDU, push the line select key next to FAIL>. Do the corrective action(s) for the CMC message(s) listed. Use the NEXT PAGE or PREV PAGE button to look through the messages.
NOTE: The CMC ground test FAIL> indication may show as a
____ result of open circuit breakers or a fault of the related fire/overheat protection system.
S 865-015
(10) Set both of the following switches to "NORM":
(a)
S2089 Ground Test Enable Switch (P461)
(b)
S2090 Remote Test Enable Switch (RCDU).
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747-400 MAINTENANCE MANUAL
F. Restore to Normal
S 865-242
(1)
Close the circuit breakers opened during the prepare for test section of this procedure and remove DO-NOT-CLOSE identifiers.
S 865-120
(2)
Remove electrical power if no longer required (AMM 24-22-00/201).
TASK 26-15-00-735-009
3. System Test (Fig. 501)___________
A. Standard Equipment
(1)
Multimeter
(2)
Megohmmeter (Megger)
(3)
Jumper wires (two)
(4)
Resistor (one) - 350 +/- 50 ohms
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AIPC 26-15-02, Fig. 2
(3)
WDM 26-15-11
(4)
SSM 26-15-01
C.
Access
(1)
Location Zone 117 Electrical & Electronics Compartment, L.H. 138 Body Landing Gear Well R.H. 221 Control Cabin LH 222 Control Cabin RH 317 APU Compartment, LH 318 APU Compartment, RH
(2)
Access Panel 317A Door - Access - APU 318A Door - Access - APU 761 Body Landing Gear - Aft Inboard Right 763 Body Landing Gear - Fwd Inboard Right
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747-400 MAINTENANCE MANUAL
D. Prepare for Tests
S 865-225
(1)
Supply electrical power (AMM 24-22-00/201).
S 865-025
(2)
Close these circuit breakers:
(a) P180, DC Power Distribution Panel
1) 180D17, CMC ENABLE SWITCH
S 865-121
CAUTION: AFTER YOU COMPLETE THE TEST, MAKE SURE BOTH GROUND TEST
_______
SWITCHES ARE SET TO "NORM".
(3)
Open these circuit breakers:
(a)
P6, Main Power Distribution Panel 1) 6C5, ALTN PWR APU FIRE/BLD DUCT OVHT LOOP A 2) 6C6, FIRE SW UNLOCK 3) 6H1, FIRE EXTINGUISHER ENG 1&3 B 4) 6H2, FIRE EXTINGUISHER ENG 1&3 A 5) 6H3, FIRE EXTINGUISHER ENG 2&4 B 6) 6H4, FIRE EXTINGUISHER ENG 2&4 A 7) 6H5, FIRE EXTINGUISHER APU 8) 6H14, APU FIRE/BLD DUCT OVHT LOOP A 9) 6H15, APU FIRE/BLD DUCT LOOP OVHT LOOP B
(b)
P7, Overhead Circuit Breaker Panel
1) 7F9, EIU L
2) 7F10, EIU C
3) 7F15, EIU R
(4)
Stop for five seconds.
S 865-011
(5)
Close these circuit breakers:
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本文链接地址：747-400 AMM 飞机维护手册 防火 FIRE PROTECTION 1(92)
