R 3. Fault Confirmation
__________________ R A. Make sure that this(these) circuit breaker(s) is(are) closed: R -------------------------------------------------------------------------------
R PANEL DESIGNATION IDENT. LOCATION R -------------------------------------------------------------------------------R 49VU HYD/HYD/PRESS/XMTR 1841GN C11
R B. Aircraft Maintenance Configuration
R (1) Energize the aircraft electrical circuits
R (Ref. AMM TASK 24-41-00-861-002).
R (2) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only)

R (Ref. AMM TASK 31-60-00-860-001).
R (3) On the ECAM control panel on the center pedestal, push the HYD

R pushbutton switch. Make sure that the HYD page is shown on the system
R display of the ECAM.
R (4) Look for fault indications on the lower ECAM DU.
R (5) Monitor the condition of the circuit breaker 1841GN.
R 4. Fault Isolation

_______________

R A. If the Fault Confirmation gives:
R - The hydraulic system pressure indication of the Green, Blue and Yellow
R hydraulic system is replaced by amber XX on the lower ECAM DU.
R - The circuit breaker 1841GN is open:

R (1) Do a check for a defective hydraulic pressure transmitter as follows:

R (a) Remove the electrical connector from the HYDR. PRESSURE
R TRANSMITTER (1065GN).

R (b) Close the circuit breaker 1841GN:

R 1_ If the circuit breaker 1841GN stays closed:
R - Replace the HYDR. PRESSURE TRANSMITTER (1065GN) (Ref. AMM
R TASK 29-32-11-000-001) and (Ref. AMM TASK 29-32-11-400-001).

R 2_ If the circuit breaker 1841GN opens:

R a_ Connect the the electrical connector of the HYDR. PRESSURE
R TRANSMITTER (1065GN).

R (c) Do the worksteps (a) thru (b) again at the:
R - HYDR. PRESSURE TRANSMITTER (2065GN)
R - HYDR. PRESSURE TRANSMITTER (3065GN)

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R  (d) Replace the applicable hydraulic pressure transmitter which 
R  causes the circuit breaker 1841GN to open: 
R  - for the HYDR. PRESSURE TRANSMITTER (2065GN) (Ref. AMM TASK 29-
R  32-11-000-002) and (Ref. AMM TASK 29-32-11-400-002) 
R  - for the HYDR. PRESSURE TRANSMITTER (3065GN)> (Ref. AMM TASK 29-
R  32-11-000-003) and (Ref. AMM TASK 29-32-11-400-003) 
R  (2) If the fault continues: 
R  (a) Do a check for continuity between: 
R  - the CB (1841GN) and the pin C of the terminal block (7502VT) 
R  (Ref. AWM 29-32-02). 
R  1_  If there is no continuity:
R  a_  Repair the wiring between the CB (1841GN) and the pin C of
R  the terminal block (7502VT) (Ref. AWM 29-32-02). 
R  b_  If the fault continues:
R  - Replace the C/B-HYDRAULIC/HYD/QTY/IND (1841GN). 
R  2_  If there is continuity:
R  - Do a check for continuity between the pin C of the terminal 
R  block (7502VT) and the pins D, E, H of the terminal block 
R  (7502VT) (Ref. AWM 29-32-02). 
R  a_  If there is no continuity:
R  - Replace the terminal block (7502VT). 
R  B. Do the applicable operational test of the hydraulic pressure transmitter, 
R  to make sure that the operation is correct (no fault indications shown): 
R  - For the HYDR. PRESSURE TRANSMITTER (1065GN) (Ref. AMM TASK 29-32-00-
R  710-001) 
R  - For the HYDR. PRESSURE TRANSMITTER (2065GN) (Ref. AMM TASK 29-32-00-
R  710-002) 
R  - For the HYDR. PRESSURE TRANSMITTER (3065GN) (Ref. AMM TASK 29-32-00-
R  710-003).

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 GREEN MAIN HYDRAULIC POWER - FAULT ISOLATION PROCEDURES
_______________________________________________________
 TASK 29-11-00-810-801
 Loss of the Green Reservoir Pressurization
 1. Possible Causes
_______________

 - PRESS SW-G RSVR AIR (1384GH)

 - VALVE-MAN DEPRESS, G RSVR (1087GM)