2. Job Set-up Information
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A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Multimeter No specific 45Vdc Isolation Tester
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B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
ASM 278106S01 ASM 278107S01 AMM 27-51-34-000-001 Removal of the SFCC (21CV,22CV) AMM 27-51-34-400-001 Installation of the SFCC (21CV,22CV) AMM 27-81-00-740-002 Bite Test of the Slat and Flap Control Computers
(Slat System) AMM 27-81-51-000-004 Removal of the Solenoid Valve from the Slat Wing-Tip Brake (WTB) AMM 27-81-51-400-002 Installation of the Solenoid Valve to the Slat Wing-Tip Brake (WTB)
3. Fault Confirmation
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A. SFCC System Bite WTB Solenoid test
(1) Do a BITE test on the SFCC 1 (2) (Ref. AMM TASK 27-81-00-740-002). The fault data "LH WTB solenoid open circuit (disconnect)" is displayed, or the fault data "LH WTB solenoid short circuit" is displayed.
(2) Do the fault isolation.
4. Fault Isolation
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A. Procedure.
(1) Swap the SFCC 1 and SFCC 2,(Ref. AMM TASK 27-51-34-000-001) (Ref. AMM TASK 27-51-34-400-001):
(a) Access the SLT ON GROUND FAULTS and do a check off the ground log.
(b) If the fault moves with SFCC 1(2).
(c) Install the SFCC 1 (2) in their initial locations.
(d) Replace the unserviceable SFCC-1 (21CV) (SFCC-2 (22CV)), Ref. Para,4.A.(1).
(2) Use Task (Ref. AMM TASK 27-81-51-000-004) and Figure 402/402A and find the electrical connector for the LH WTB BRAKE-L WING TIP (35CV) solenoids and release.
(3) Do a check of the A/C Wiring between SFCC 1 ARINC tray interface and the electrical connector (Ref. ASM 278106S01) 35CVA (Blue Solenoid)
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(4) Do a check of the A/C wiring between SFCC 2 ARINC tray interface and the electrical connector (Ref. ASM 278107S01) 35CVB (Green Solenoid)
(5) If there is no continuity repair the wiring/interface.
(6) If the A/C wiring is satisfactory, do a check of the circuit resistance and circuit isolation of the fault indicated solenoid valve.
(7) On the LH WTB, use a Multimeter and do a check of the resistance between:
- SFCC1 - 35CVA - LH Blue solenoid pins A and U. (Ref. ASM 278106S01)
- SFCC2 - 35CVB = LH Green solenoid pins A and B (Ref. ASM 278107S01)
(a) The resistance for the solenoid valve:
- P/N 667C0000-02 must be between 71 ohms and 84 ohms
- P/Ns 903A0000-01; 1106A0000-01 and 1111A0000-01 must be between 53 Ohms and 60 Ohms.
(8) On the LH WTB Blue solenoid do a check for circuit isolation.
(a) For the BLUE solenoid connect the pins A & B together.
(b) Connect one test lead of the 45Vdc Isolation Tester to the pins AB for the BLUE solenoid and the other test lead to pin C.
(c) Supply a test signal for 5 seconds and read the shown resistance value
(d) The resistance value must be greater than 100Megohms.
(e) For the Green soleniod do the same operation as in 4.A.(7) and (8).
(9) If the BRAKE-L WING TIP (35CV) fails one of the two tests at Para 4.A.(7) and (8) replace the Solenoid valve (Ref. AMM TASK 27-81-51-000-004) (Ref. AMM TASK 27-81-51-400-002)
(10) Do the System BITE test as given in Para 3.A.(1).
(11) Set the MCDU to MENU MODE and access the SLT ON GROUND FAULTS page and make sure that the ground log is clear.
5. Close-up
________
A. Remove the ground support and maintenance equipment, the special and standard tools and all other items.
B. Put the aircraft back to its initial configuration.
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本文链接地址：A320 Trouble Shooting Manual 排故手册 飞行操纵 2(73)
