SLT RH WTB BLU Solenoid 36CV or Open or Short Circuit to SFCC 1. SLT RH WTB GRN Solenoid 36CV or Open or Short Circuit to SFCC 2.
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______ START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______ CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
1. Possible Causes
_______________
- SFCC-1 (21CV)
- SFCC-2 (22CV)
- BRAKE-R WING TIP (36CV)
- A/C wiring between SFCC 1 ARINC tray interface and the electrical
connector
- A/C Wiring between SFCC 2 ARINC tray interface and the electrical
connector
2. Job Set-up Information
______________________
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
__________________
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 "RH WTB solenoid open circuit (disconnect)" is displayed, or the fault data "RH WTB solenoid short circuit" is displayed.
(2) Do the fault isolation.
4. Fault Isolation
_______________
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 of 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.4.A.(1).
(2) Use Task (Ref. AMM TASK 27-81-51-000-004) Figure 402/402A and find electrical connector for the RH WTB BRAKE-R WING TIP (36CV) 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) 34CVA (Blue Solenoid)
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞27-81-00∞∞∞∞∞∞∞∞∞∞Page 254
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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) 34CVB (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 RH WTB, use a Multimeter and do a check of the resistance between:
- SFCC1 - 36CVA - RH Blue Solenoid Pins A and U. (Ref. ASM 278106S01)
- SFCC2 - 36CVB = RH 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 RH 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. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320 Trouble Shooting Manual 排故手册 飞行操纵 2(74)
