W DOC AIRBUS | TSM A320F

Loss of the Signal of the Left Green Elevator-Servocontrol Servovalve by the SEC 2 (COM Part)

TASK 27-30-00-810-818-A
Loss of the Signal of the Left Green Elevator-Servocontrol Servovalve by the SEC 2 (COM Part)

1. Possible Causes
  • SEC-2 [1CE2]
  • servovalve
  • wiring of the L ELEV SV (ANO 1) signal from the SEC 2 (1CE2) COM part to the MON part
  • wiring from the SEC 2 (1CE2) MON part, pins AD/1F, 1G to the first terminal block
  • wiring of the SV XDCR SPLY signal
  • wiring of the POS XDCR (ANI 3-1) signal
  • SERVO CTL-L ELEVATOR, INBD G [34CE1]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
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
ASM 279408
AMM 27-94-34-000-001
Removal of the SEC
AMM 27-94-34-400-001
Installation of the SEC
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 27-30-00-700-076-A
A. Test
   (1) Do the operational test of the side stick assembly (activation for the BITE test) AMM 27-96-00-710-020.
NOTE: Before you start the operational test procedure, release the FLT CTL/ELAC 1 and FLT CTL/ELAC 2 pushbutton switches (on these pushbutton switches the OFF legends come on).
   (2) Do the BITE test of the EFCS (ground scanning) AMM 27-96-00-740-001.
4. Fault Isolation
Subtask 27-30-00-810-063-A
A. If the test gives the maintenance message:
SEC2 COM OR WIRING TO L G ELEV SERVO VLV 34CE1
   (1) If the fault continues:
   (2) If the fault continues:
     (a) Do a check of the wiring of the L ELEV SV (ANO 1) signal from the SEC 2 (1CE2) COM part to the MON part, from pins AA/1A, 1B to pins AD/1J, 1K ASM 279408:
  • If there is continuity, see Para. (b).
  • If there is no continuity, repair the above wiring.
     (b) Do a check of the wiring from the SEC 2 (1CE2) MON part, pins AD/1F, 1G to the first terminal block ASM 279408:
  • If there is continuity, see Para. (c).
  • If there is no continuity, repair the above wiring.
     (c) Do a check of the wiring of the SV XDCR SPLY signal , from the servocontrol (34CE1) to the first terminal block ASM 279408:
  • If there is continuity, see Para. (d).
  • If there is no continuity, repair the above wiring.
     (d) Do a check of the wiring of the POS XDCR (ANI 3-1) signal, from the SEC 2 (1CE2) MON part to the servocontrol (34CE1) ASM 279408:
  • If there is continuity, see Para. (3).
  • If there is no continuity, repair the above wiring.
   (3) If the fault continues:
Subtask 27-30-00-700-077-A
B. Do the tests given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:27:31 UTC
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