W DOC AIRBUS | TSM A320F

Loss of the Signal of the Green Elevator-Servocontrol Servovalve by the ELAC 2

TASK 27-93-00-810-867-A
Loss of the Signal of the Green Elevator-Servocontrol Servovalve by the ELAC 2

1. Possible Causes
  • ANI 3-1 and ANI 2-1 analog input signal of the ELAC and SEC
  • servovalve
  • ELAC-2 [2CE2]
  • XDCR UNIT-ELEV POS, L [49CE1]
  • SERVO CTL-L ELEVATOR, INBD G [34CE1]
  • wiring of the POS XDCR (LVDT) (ANI 3-1) signal from the ELAC 2 (2CE2) to the first terminal block
  • wiring of the POS XDCR MON (RVDT) (ANI 2-1) signal from the transducer unit (49CE1) to the ELAC 2 (2CE2)
  • wiring of the POS XDCR COM (RVDT) (ANI 2-1) signal from the ELAC 2 (2CE2) to the first terminal block
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 31-32-00-810-933-A
Failure of the Analog Links
AMM 27-34-51-000-001
Removal of the Elevator Servo Control
AMM 27-34-51-000-008
Removal of the Elevator Servo Control Actuator Servo Valve
AMM 27-34-51-400-001
Installation of the Elevator Servo Control
AMM 27-34-51-400-003
Installation of the Elevator Servo Control Actuator Servo Valve
AMM 27-92-13-000-001
Removal of the Elevator Position Transducer-Unit
AMM 27-92-13-400-001
Installation of the Elevator Position Transducer-Unit
ASM 279308
AMM 27-93-34-000-001
Removal of the ELAC
AMM 27-93-34-400-001
Installation of the ELAC
ASM 279408
AMM 27-96-00-710-020
Operational Test of the Side Stick Assembly (Activation for the BITE Test)
AMM 27-96-00-740-001
BITE Test of the EFCS (Ground Scanning)
3. Fault Confirmation
Subtask 27-93-00-700-120-A
A. Test
   (1) Do the operational test of the side stick assembly (activation for the BITE test) AMM 27-96-00-710-020.
   (2) Do the BITE test of the EFCS (ground scanning) AMM 27-96-00-740-001.
4. Fault Isolation
Subtask 27-93-00-810-115-C
A. If the test gives the maintenance message:
ELAC2 MON OR WIRING TO L G ELEV SERVO VLV 34CE1
   (1) If the fault continues:
     (a) Replace the servovalve AMM 27-34-51-000-008 and AMM 27-34-51-400-003.
   (2) If the fault continues:
     (a) Replace the ELAC-2 [2CE2] AMM 27-93-34-000-001 and AMM 27-93-34-400-001.
   (3) If the fault continues:
     (a) Replace the XDCR UNIT-ELEV POS, L [49CE1] AMM 27-92-13-000-001 and AMM 27-92-13-400-001.
   (4) If the fault continues:
     (a) Replace the SERVO CTL-L ELEVATOR, INBD G [34CE1] , AMM 27-34-51-000-001 and AMM 27-34-51-400-001.
   (5) If the fault continues:
     (a) Do a check of the wiring of the POS XDCR (LVDT) (ANI 3-1) signal from the ELAC 2 (2CE2) to the first terminal block ASM 279308.
  • If there is continuity, go to Para. (b)
  • If there is no continuity, repair the above wiring.
     (b) Do a check of the wiring of the POS XDCR MON (RVDT) (ANI 2-1) signal from the transducer unit (49CE1) to the ELAC 2 (2CE2) ASM 279308.
  • If there is continuity, go to Para. (c)
  • If there is no continuity, repair the above wiring.
     (c) Do a check and repair the wiring of the POS XDCR COM (RVDT) (ANI 2-1) signal from the ELAC 2 (2CE2) to the first terminal block ASM 279308.
Subtask 27-93-00-700-121-A
B. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:27:59 UTC
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