W DOC AIRBUS | TSM A320F

Failure of the Left Spoiler 4 Position Transducer

TASK 27-60-00-810-834-A
Failure of the Left Spoiler 4 Position Transducer

1. Possible Causes
  • SERVO CTL-SPLR4, L Y [31CE7]
  • wiring of the POS XDCR SPLY signal from the servo control (31CE7) to the first terminal block
  • wiring of the POS XDCR V1, V2 signals from the servo control (31CE7) to the first terminal block
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 27-90-00-810-803-A
Loss of the ACS2 Signal of the SEC1 MON Side
AMM 27-64-51-000-004
Removal of the Spoiler Servo Control
AMM 27-64-51-400-004
Installation of the Spoiler Servo Control
ASM 279402
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 27-60-00-700-100-B
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.
     (a) If the ground scanning gives the maintenance message:
L SPLR4 POS XDCR 31CE7
  • refer to the Para. Fault Isolation.
     (b) If the ground scanning gives the maintenance messages:
L SPLR4 POS XDCR 31CE7
R SPLR4 POS XDCR 31CE8
4. Fault Isolation
Subtask 27-60-00-810-083-B
A. If the BITE test gives the maintenance message:
L SPLR4 POS XDCR 31CE7
NOTE: The resistance of primary and secondary windings must be between 30 ohms and 500 ohms.
   (1) If the fault continues:
  • do a check and repair the wiring of the POS XDCR SPLY signal from the servo control (31CE7) to the first terminal block, ASM 279402.
   (2) If the fault continues:
  • do a check and repair the wiring of the POS XDCR V1, V2 signals from the servo control (31CE7) to the first terminal block, ASM 279402.
Subtask 27-60-00-700-101-A
B. Do the tests given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:27:44 UTC
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