R **ON A/C ALL
4. Fault Isolation_______________
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
A. If the test confirms the fault: - Replace the related OXYGEN BOX (Ref. AMM TASK 35-21-41-000-001) and (Ref. AMM TASK 35-21-41-400-001).
(1) If the fault continues:
(a) Do a check and repair the wiring if necessary between: - The related OXYGEN BOX and the related CB - The related OXYGEN BOX and GND, (Ref. ASM 35-23/01), (Ref. ASM 35-23/02) and (Ref. ASM 35-23/02).
R **ON A/C 401-499,
R R R A. If the test confirms the fault: - Replace the related OXYGEN BOX (Ref. AMM TASK 35-21-41-000-001) and (Ref. AMM TASK 35-21-41-400-001).
R **ON A/C ALL
B. Do the test as given in the Para. 3.A.
5. Close-up________
A. Put the aircraft back to its initial configuration.
R TASK 35-23-00-810-808 R Incorrect Fill Pressure indicated on POXIP R 1. Possible Causes
_______________
R - Passenger Oxygen Panel (POXIP) 940WR R - cylinder assembly R - pressure reducer R - aircraft wiring
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
R 35-23-00-810-813 R AMM 35-21-00-040-001 R AMM 35-21-00-614-002 R AMM 35-21-00-750-001 R R AMM 35-21-51-000-001 R R AMM 35-21-51-400-001 R R AMM 35-23-00-040-002 R R R AMM 35-23-51-000-001 R AMM 35-23-51-400-001
R 3. Fault Confirmation
__________________ Passenger Oxygen Panel Failure Check of the Oxygen Cylinder Filling of the Passenger Oxygen Cylinders Hydrostatic Test of Oxygen Cylinders and Functional Check of Pressure Reducers Removal of the Oxygen Cylinder Assemblies (991WR1-991WR6) Installation of the Oxygen Cylinder Assemblies (991WR1-991WR6) Check of the Oxygen Cylinder Pressure because of no PRESSURE Indication on the Passenger Oxygen Indication Panel (POXIP) Removal of the Pressure Reducer (990WR1-990WR6) Installation of the Pressure Reducer (990WR1-990WR6)
R A. Do the self-test of the Passenger Oxygen Panel (POXIP) 940WR with the R TEST pushbutton on the panel (Ref. TASK 35-23-00-810-813).
_______________
R A. If the self-test is successful and the CHECK and/or LO light(s) are on:
R (1) Do the Filling of the Passenger Oxygen Cylinder procedure (Ref. AMM
R TASK 35-21-00-614-002).
R (2) If the light(s) do not go off:
R (a) Do a visual inspection of the oxygen cylinders (Ref. AMM TASK 35-
R 21-00-040-001).
R (b) If the fault continues:
R Do the manual read-out of the pressure gage at each oxygen
R cylinder and identify the cylinder(s) with low pressure. Refer to
R the test (Ref. AMM TASK 35-23-00-040-002).
R (c) If the fault continues:
R Replace the related cylinder assembly (Ref. AMM TASK 35-21-51-
R 000-001) and (Ref. AMM TASK 35-21-51-400-001) and the related
R pressure reducer (Ref. AMM TASK 35-23-51-000-001) and (Ref. AMM
R TASK 35-23-51-400-001).
R (d) Do the functional check of oxygen cylinders and pressure reducers
R (Ref. AMM TASK 35-21-00-750-001).
R (e) Do a check and repair the aircraft wiring between
R - The POXIP connector A pin T and the QCCU connector B pin 34
R - The POXIP connector A pin S and the QCCU connector B pin 35
R (3) If the self-test is not successful:
R - Replace the POXIP 940WR.
R B. Make sure that the CHECK and/or LO light(s) do not come on.
R 5. Close-up________
R A. Put the aircraft back to its initial configuration.
R TASK 35-23-00-810-809 R Hand Valves on Oxygen Cylinders Closed R 1. Possible Causes
_______________
R - Passenger Oxygen Panel (POXIP) 940WR R - OXYGEN VALVE POSITION INDICATORS (991WRx) R - OXYGEN CYLINDER ASSEMBLY R - aircraft wiring
R 2. Job Set-up Information
______________________
R A. Referenced Information
R -------------------------------------------------------------------------------R REFERENCE DESIGNATION R -------------------------------------------------------------------------------
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