W DOC AIRBUS | TSM A320F

Automatic System Activation Fault

TASK 35-23-00-810-801-A
Automatic System Activation Fault

1. Possible Causes
  • PRESS SW [16WR]
  • RELAY-SYS OFF (8WR)
  • RELAY-SYS OFF (9WR)
  • RELAY-PWR SPLY (10WR)
  • wiring
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 35-23-00-720-002
Functional Test of the Passenger Emergency-Oxygen System
ASM 352301
AMM 35-23-15-000-001
Removal of the Altitude Switch
AMM 35-23-15-400-001
Installation of the Altitude Switch
3. Fault Confirmation
Subtask 35-23-00-710-050-A
A. Do the functional test of the passenger emergency-oxygen system AMM 35-23-00-720-002.
4. Fault Isolation
Subtask 35-23-00-810-050-A
A. If the test confirms the fault:
   (1) If the fault continues:
  • Do a check of the RELAY-SYS OFF (8WR) and replace it if necessary ASM 352301.
   (2) If the fault continues:
  • Do a check of the RELAY-SYS OFF (9WR) and replace it if necessary ASM 352301.
   (3) If the fault continues:
  • Do a check of the RELAY-PWR SPLY (10WR) and replace it if necessary ASM 352301.
   (4) If the fault continues:
     (a) Do a check and repair the wiring if necessary between:
  • SW (16WR) connector A/A and CB (1WR)
  • SW (16WR) connector A/C and RELAY (8WR) connector A/X1
  • RELAY (8WR) connector A/X2 and GND
  • SW (16WR) connector A/C and RELAY (9WR) connector A/X1
  • RELAY (9WR) connector A/X2 and GND
  • SW (16WR) connector A/C and RELAY (10WR) connector A/X1
  • RELAY (10WR) connector A/X2 and GND,
    ASM 352301.
Subtask 35-23-00-710-051-A
B. Do the test as given in the Para. 3.A.
5. Close-up
Subtask 35-23-00-860-050-A
A. Put the aircraft back to its initial configuration.
[Rev.8 from Aug 2018] 2026.04.04 04:39:05 UTC
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