W DOC AIRBUS | TSM A320F

System Pressure Indication replaced by amber XX for all Hydraulic Systems

TASK 29-10-00-810-806-A
System Pressure Indication replaced by amber XX for all Hydraulic Systems

1. Possible Causes
  • HYDR. PRESSURE TRANSMITTER [1065GN]
  • HYDR. PRESSURE TRANSMITTER [2065GN]
  • HYDR. PRESSURE TRANSMITTER [3065GN]
  • wiring
  • C/B-HYD/HYD/PRESS/XMTR [1841GN]
  • terminal block (7502VT)
2. Job Set-up Information
 A. Referenced Information
REFERENCE
DESIGNATION
AMM 24-41-00-861-002
Energize the Aircraft Electrical Circuits from the External Power
AMM 29-32-00-710-001
Operational Test of the System Pressure Switch , Pressure Transducer and the associated Indicating System of the Green Hydraulic System
AMM 29-32-00-710-002
Operational Test of the Pressure Switches , Pressure Transducer and the associated Indicating System of the Blue Hydraulic System
AMM 29-32-00-710-003
Operational Test of the System Pressure Switch , Pressure Transducer and the associated Indicating System of the Yellow Hydraulic System
AWM 293202
AMM 29-32-11-000-001
Removal of the Hydraulic Pressure Transducer
AMM 29-32-11-000-002
Removal of the Hydraulic Pressure Transducer
AMM 29-32-11-000-003
Removal of the Hydraulic Pressure Transducer
AMM 29-32-11-400-001
Installation of the Hydraulic Pressure Transducer
AMM 29-32-11-400-002
Installation of the Hydraulic Pressure Transducer
AMM 29-32-11-400-003
Installation of the Hydraulic Pressure Transducer
AMM 31-60-00-860-001
EIS Start Procedure
3. Fault Confirmation
Subtask 29-10-00-865-051-A
A. Make sure that this(these) circuit breaker(s) is(are) closed:
PANELDESIGNATIONFINLOCATION
** ON A/C ALL
49VUHYD/HYD/PRESS/XMTR1841GNC11
Subtask 29-10-00-860-052-A
B. Aircraft Maintenance Configuration
   (1) Energize the aircraft electrical circuits
AMM 24-41-00-861-002.
   (2) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only)
AMM 31-60-00-860-001.
   (3) On the ECAM control panel on the center pedestal, push the HYD pushbutton switch. Make sure that the HYD page is shown on the system display of the ECAM.
   (4) Look for fault indications on the lower ECAM DU.
   (5) Monitor the condition of the circuit breaker 1841GN.
4. Fault Isolation
Subtask 29-10-00-810-055-A
A. If the Fault Confirmation gives:
  • The hydraulic system pressure indication of the Green, Blue and Yellow hydraulic system is replaced by amber XX on the lower ECAM DU.
  • The circuit breaker 1841GN is open:
   (1) Do a check for a defective hydraulic pressure transmitter as follows:
     (a) Remove the electrical connector from the HYDR. PRESSURE TRANSMITTER [1065GN] .
     (b) Close the circuit breaker 1841GN:
       1 If the circuit breaker 1841GN stays closed:
       2 If the circuit breaker 1841GN opens:
         a Connect the the electrical connector of the HYDR. PRESSURE TRANSMITTER [1065GN] .
     (c) Do the worksteps (a) thru (b) again at the:
  • HYDR. PRESSURE TRANSMITTER [2065GN]
  • HYDR. PRESSURE TRANSMITTER [3065GN]
     (d) Replace the applicable hydraulic pressure transmitter which causes the circuit breaker 1841GN to open:
   (2) If the fault continues:
     (a) Do a check for continuity between:
  • the CB (1841GN) and the pin C of the terminal block (7502VT) AWM 293202.
       1 If there is no continuity:
         a Repair the wiring between the CB (1841GN) and the pin C of the terminal block (7502VT) AWM 293202.
         b If the fault continues:
  • Replace the C/B-HYD/HYD/PRESS/XMTR [1841GN] .
       2 If there is continuity:
  • Do a check for continuity between the pin C of the terminal block (7502VT) and the pins D, E, H of the terminal block (7502VT) AWM 293202.
         a If there is no continuity:
  • Replace the terminal block (7502VT).
Subtask 29-10-00-710-054-A
B. Do the applicable operational test of the hydraulic pressure transmitter, to make sure that the operation is correct (no fault indications shown):
[Rev.8 from Aug 2018] 2026.04.04 04:29:19 UTC
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