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 (e) (f) (g)  Close 7F23, LANDING GEAR DSP & CONT ALTN circuit breaker on the P7, Overhead Circuit Breaker Panel.Set the WING ANTI-ICE switch to the ON position. 1) Make sure that the wing anti-ice valves do not move.Set the WING ANTI-ICE switch to the off position.
 S 445-030
 (4)  Do this task: "Put Safety-Sensitive Systems Back to the Condition before Air Mode Simulation" (AMM 32-09-02/201).
 S 865-033
 (5)  Do this task: "Safety Locks Removal and Extended Leading Edge Flaps Activation" (AMM 27-81-00/201).
 S 865-020
 (6)  Do this task:  "Leading Edge Flaps Retraction" (AMM 27-81-00/201).
 NOTE:____ The LE flaps must be retracted for the wing anti-ice and the ice detection system CMC ground tests.
 S 715-024
 (7)  Do this task: "Operational Test - Ice Detection System" (AMM 30-81-00/501).
 S 745-014
 (8)  Do a CMC ground test of the wing anti-ice system: (a) Set the GND TEST switch on the P461 panel to ENABLE. (b) Push the key for GROUND TESTS on the CMC main menu. (c) Push the key for <ICE AND RAIN. (d) Push the key for <WTAIS. (e) Make sure that PASS shows on the CDU. (f) Set the GND TEST switch on the P461 panel to NORM.

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747-400 MAINTENANCE MANUAL
 F. Put the Airplane to its Initial Condition
 S 865-016
 (1)  
Erase all EICAS status messages which showed during this test (AMM 31-61-00/201).

 S 865-021

 (2)  
Remove electrical power (AMM 24-22-00/201).

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747-400 MAINTENANCE MANUAL
 ANTI-ICE/RAIN REMOVAL MODULE - REMOVAL/INSTALLATION
___________________________________________________
 1.  General_______
 A.  There are two tasks in this subject. There is one task for removal and one task for installation of the anti-ice/rain removal module. The procedure has these parts:
 -
Remove power from all systems which use the module

 -
Remove the module

 -Install a replacement module
 -Supply power to all systems which use the module
 -Test all systems which use the module.
 TASK 30-11-01-004-003
 2.  Remove the Anti-Ice/Rain Removal Module (Fig. 401)_______________________________________
 A.  Access
 (1)  Location Zone
 221, 222 Control Cabin

 B.  Procedure
 S 864-001
 (1)  Open these circuit breakers:
 (a)  
P6, Main Power Distribution Panel
 1) 6B32, WINDSHIELD WASH PUMP
 2) 6C9, WING ANTI-ICE CONT
 3) 6J10, NACELLE ANTI-ICE ENG 1
 4) 6J11, NACELLE ANTI-ICE ENG 2
 5) 6J12, NACELLE ANTI-ICE ENG 3
 6) 6J13, NACELLE ANTI-ICE ENG 4

 (b)  
P7, Overhead Circuit Breaker Panel
 1) 7E1, WSHLD WIPER L
 2) 7E2, WSHLD RAIN REPEL
 3) 7E25, WSHLD WIPER R

 

 S 024-002
 (2)  Remove the anti-ice/rain removal module:
 (a)  
Remove the four screws which hold the anti-ice/rain removal module in the P5 panel.

 (b)  
Remove the anti-ice/rain removal module and disconnect the electrical connectors from it.

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MAINTENANCE MANUAL

ANTI-ICE/RAIN
P5 PANEL REMOVAL MODULE SEE A
　
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本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 防冰和排雨 ICE AND RAIN PROTECTION(9)