W DOC AIRBUS | TSM A320F

Ground Fault Interupt detected

TASK 25-21-00-810-870-A
Ground Fault Interupt detected

1. Possible Causes
  • Seat-to-seat cable
  • In-seat cable
  • Wiring
  • terminal blocks VT-type
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 24-00-00-810-803-A
Circuit Breaker Tripped and/or C/B TRIPPED Warning
ASM 252100
AMM 25-21-00-740-001
BITE Test of the Master Control Unit (MCU)
AWM 252133
AWM 252134
AWM 252137
AWM 252138
AWM 252141
AWM 252142
AWM 252145
AWM 252146
AMM 25-21-61-000-001
Removal of the Cable - Seat to Seat
AMM 25-21-61-400-001
Installation of the Cable - Seat to Seat
3. Fault Confirmation
Subtask 25-21-00-740-053-B ** ON A/C NOT FOR ALL
A. Do the BITE Test of the related Master Control Unit (MCU) AMM 25-21-00-740-001.
4. Fault Isolation
Subtask 25-21-00-810-244-E ** ON A/C NOT FOR ALL
A. If the BITE test confirms the fault, refer to the indication panel and the circuit breaker panel of the MCU:
   (1) If the circuit breakers are open:
     (a) Do a check (Ref. TSM TASK 24-00-00-810-803) and repair or replace the defective:
   (2) If the indication panel shows:
  • The PORT BITE LED(s) and the POWER PORT STATE LED(s) are OFF, or
  • The PORT BITE LED(s) flashes GREEN and the GENERAL BITE LED is OFF.
     (a) Find the related cables and the wiring of the defective column(s). Refer to ASM 252100, AWM 252133, AWM 252134, AWM 252137, AWM 252138, AWM 252141, AWM 252142, AWM 252145 and AWM 252146.
     (b) Do a check and repair or replace the defective:
     (c) If the fault continues:
       1 Do a careful check of the terminal blocks VT-type for correct condition and correct connection.
       2 Make sure that all terminal ends and the nuts are correctly installed and repair if necessary.
Subtask 25-21-00-710-107-A ** ON A/C NOT FOR ALL
B. Do the test given in Para. 3.
[Rev.8 from Aug 2018] 2026.04.04 04:27:01 UTC
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