W DOC AIRBUS | TSM A320F

Sensor Monitoring Fault at the FWD Cargo Compartment Door

TASK 52-31-00-810-801-A
Sensor Monitoring Fault at the FWD Cargo Compartment Door

1. Possible Causes
  • PROX SWITCH
  • PROX SW-FRAME, FWD CARGO COMPT DOOR [30WV]
  • wiring
  • LGCIU-1 [5GA1]
  • PROX SW-HANDLE, FWD CARGO COMPT DOOR [28WV]
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
TSM TASK 32-31-00-810-830-A
Cargo Door (Fwd) Handle Proximity Sensor Fault (28WV)
TSM TASK 32-31-00-810-832-A
Cargo Door (Fwd) Safety Mechanism Proximity Sensor Fault (30WV)
ESPM 205500
AMM 24-41-00-862-002
De-energize the Aircraft Electrical Circuits Supplied from the External Power
AMM 31-36-00-740-008
Access to the Parameter Call-Up Menus
ASM 315405
AMM 31-60-00-860-001
EIS Start Procedure
AMM 52-30-00-860-001
Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
AMM 52-30-00-860-002
Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
AMM 52-71-00-820-003
Adjustment of the Proximity Switches of the Cargo Compartment Door Threshold
AMM 52-71-00-820-004
Adjustment of the Proximity Switches of the Locking Handle of the Cargo Compartment Doors
AMM 52-71-12-000-002
Removal of the Proximity Switches
AMM 52-71-12-400-002
Installation of the Proximity Switches
3. Fault Confirmation
Subtask 52-31-00-710-050-A
A. Test
   (1) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only)
AMM 31-60-00-860-001.
   (2) Open and close the FWD Cargo-Compartment Door (referred to as cargo door) AMM 52-30-00-860-001 and AMM 52-30-00-860-002.
   (3) Look for the fault indications at the door page of the lower ECAM DU.
4. Fault Isolation
Subtask 52-31-00-810-050-A ** ON A/C NOT FOR ALL
A. When the cargo door is closed and locked and the door page of the lower ECAM DU shows the symbol for the cargo door and the maintenance message CARGO in amber:
   (1) Do a check of the PROX SWITCH and the target:
     (a) If a PROX SWITCH and/or a target is not clean:
       1 Clean the PROX SWITCH and/or the target ESPM 205500.
     (b) Do the test in the Para. Fault Confirmation.
   (2) If the fault continues:
  • Get access to the parameter call-up menus AMM 31-36-00-740-008
  • Enter this EQ/SYS/LAB/SDI/ parameter to the scratchpad:
    6D/1/022/01 or 6D/2/022/10
  • Look at the line "SSM DATABITS 28-11"
  • Refer also to the specific parameter 1.022.01 or 2.022.10 of the LGCIU - ARINC 429 Output Data (Ref. AMM 32-61-00, P. Block 1).
   (3) If the bit 16 of the line "SSM DATABITS 28-11" shows "0":
     (a) If the fault continues:
     (b) If the fault continues:
  • Do a check and repair the wiring between the:
    PROX SW-FRAME, FWD CARGO COMPT DOOR [30WV] connector A/A and LGCIU-1 [5GA1] connector AA/6C,
    PROX SW-FRAME, FWD CARGO COMPT DOOR [30WV] connector A/B and LGCIU-1 [5GA1] connector AA/6D. ASM 315405
   (4) If the bit 18 of the line "SSM DATABITS 28-11" shows "0":
     (a) If the fault continues:
     (b) If the fault continues:
  • Do a check and repair the wiring between the:
    PROX SW-HANDLE, FWD CARGO COMPT DOOR [28WV] connector A/A and LGCIU-1 [5GA1] connector AA/6G,
    PROX SW-HANDLE, FWD CARGO COMPT DOOR [28WV] connector A/B and LGCIU-1 [5GA1] connector AA/6H. ASM 315405
   (5) If the fault continues:
Subtask 52-31-00-810-050-B ** ON A/C NOT FOR ALL
A. When the cargo door is closed and locked and the door page of the lower ECAM DU shows the symbol for the cargo door and the maintenance message CARGO in amber:
   (1) Do a check of the PROX SWITCH and the target:
     (a) If a PROX SWITCH and/or a target is not clean:
       1 Clean the PROX SWITCH and/or the target ESPM 205500.
     (b) Do the test in the Para. Fault Confirmation.
   (2) If the fault continues:
  • Get access to the parameter call-up menus AMM 31-36-00-740-008
  • Enter this EQ/SYS/LAB/SDI/ parameter to the scratchpad:
    06D/1/022/01 or 06D/2/022/10
  • Look at the line "SSM DATABITS 28-11"
  • Refer also to the specific parameter 1.022.01 or 2.022.10 of the LGCIU - ARINC 429 Output Data (Ref. AMM 32-61-00, P. Block 1).
   (3) If the bit 16 of the line "SSM DATABITS 28-11" shows "0":
     (a) If the fault continues:
     (b) If the fault continues:
  • Do a check and repair the wiring between the:
    PROX SW-FRAME, FWD CARGO COMPT DOOR [30WV] connector A/A and LGCIU-1 [5GA1] connector AA/6C,
    PROX SW-FRAME, FWD CARGO COMPT DOOR [30WV] connector A/B and LGCIU-1 [5GA1] connector AA/6D. ASM 315405
   (4) If the bit 18 of the line "SSM DATABITS 28-11" shows "0":
     (a) If the fault continues:
     (b) If the fault continues:
  • Do a check and repair the wiring between the:
    PROX SW-HANDLE, FWD CARGO COMPT DOOR [28WV] connector A/A and LGCIU-1 [5GA1] connector AA/6G,
    PROX SW-HANDLE, FWD CARGO COMPT DOOR [28WV] connector A/B and LGCIU-1 [5GA1] connector AA/6H. ASM 315405
   (5) If the fault continues:
Subtask 52-31-00-710-052-A
B. Do the test as given in Para.3.A. to make sure that the operation is correct.
5. Close-up
Subtask 52-31-00-860-050-A
A. De-energize the aircraft electrical circuits
AMM 24-41-00-862-002.
[Rev.8 from Aug 2018] 2026.04.04 04:34:51 UTC
"WTRUIB" 2025