Crew Oxygen Pressure Indication with Amber Pressure Value and Amber Half Box on the DOOR/OXY Page

TASK 35-10-00-810-811-A
Crew Oxygen Pressure Indication with Amber Pressure Value and Amber Half Box on the DOOR/OXY Page

1. Possible Causes

XMTR/PRESS REG-OXY [4HT]
CYLINDER-OXYGEN STORAGE [5750HM]
OXYGEN CYLINDER [5750HM1]
PRESS.TRANSM.REGULATO [4HT2]
OXYGEN CYLINDER [5750HM2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 12-14-35-600-001	Servicing of the Oxygen-Replenishing
AMM 12-14-35-600-002	Servicing of the Oxygen-Replenishing
AMM 24-41-00-861-002	Energize the Aircraft Electrical Circuits from the External Power
AMM 24-41-00-862-002	De-energize the Aircraft Electrical Circuits Supplied from the External Power
AMM 31-60-00-860-001	EIS Start Procedure
AMM 31-60-00-860-002	EIS Stop Procedure
AMM 35-10-00-720-001	Functional Check of ECAM Oxygen-Cylinder Contents Indication Compared with Cylinder Pressure Gauge
AMM 35-11-41-000-001	Removal of the Crew Oxygen-Storage Cylinder
AMM 35-11-41-000-802	Removal of the Crew Oxygen-Storage Cylinders
AMM 35-11-41-400-001	Installation of the Crew Oxygen-Storage Cylinder
AMM 35-11-41-400-802	Installation of the Crew Oxygen-Storage Cylinders
AMM 35-13-15-000-001	Removal of the Oxygen Pressure Regulator/Transmitter
AMM 35-13-15-000-802	Removal of the Oxygen Pressure Regulator/Transmitters
AMM 35-13-15-400-001	Installation of the Oxygen Pressure Regulator/Transmitter
AMM 35-13-15-400-802	Installation of the Oxygen Pressure Regulator/Transmitters

3. Fault Confirmation
Subtask 35-10-00-860-058-A

A. Job Set Up
(1) Aircraft Maintenance Configuration
(a) Energize the aircraft electrical circuits
AMM 24-41-00-861-002.
(b) Do the EIS start procedure (Upper ECAM DU and lower ECAM DU only)
AMM 31-60-00-860-001.

Subtask 35-10-00-865-059-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	OXYGEN/CREW/OXY/SPLY	1HT	HA01

Subtask 35-10-00-700-055-A ** ON A/C NOT FOR ALL

C. Test
(1) On the ECAM control panel:

Push the DOOR key to get the DOOR/OXY page.

(2) Make sure that the oxygen pressure value is amber and that you can see an amber half box on it.
(3) Compare the ECAM oxygen-cylinder pressure-indication with the oxygen-cylinder pressure-gage indication on the oxygen cylinder AMM 35-10-00-720-001.

Subtask 35-10-00-700-055-B ** ON A/C NOT FOR ALL

C. Test
(1) On the ECAM control panel:

Push the DOOR key to get the DOOR/OXY page.

(2) Make sure that there is (are) amber pressure value(s) and amber half box(es) on the DOOR/OXY page.

NOTE: The pressure indication given on the left side of the lower ECAM DU is for the Captain and the Third Occupant and comes from the oxygen cylinder 5750HM1. The pressure indication given on the right side of the lower ECAM DU is for the First Officer and the Fourth Occupant and comes from the oxygen cylinder 5750HM2.

(3) Compare the ECAM oxygen-cylinder pressure-indications with the oxygen-cylinder pressure-gage indications on the related oxygen cylinder AMM 35-10-00-720-001.

4. Fault Isolation
Subtask 35-10-00-810-060-B ** ON A/C NOT FOR ALL

A. If, during the check of the pressure of the crew oxygen-storage cylinder (5750HM), the value on the pressure gage is:
(1) The same as the value on the SD, on the DOOR/OXY page:

At the oxygen filling port (5769HM), fill the crew oxygen-storage cylinder (5750HM) AMM 12-14-35-600-001 or AMM 12-14-35-600-002.

(2) Different from the value on the SD, on the DOOR/OXY page:

Replace the XMTR/PRESS REG-OXY [4HT] AMM 35-13-15-000-001 and AMM 35-13-15-400-001.

(a) If the fault continues:

Replace the CYLINDER-OXYGEN STORAGE [5750HM] AMM 35-11-41-000-001 and AMM 35-11-41-400-001.

Subtask 35-10-00-810-060-D ** ON A/C NOT FOR ALL

A. If, during the check of the pressure of the crew oxygen-storage cylinder (5750HM1), the value on the pressure gage is:
(1) The same as the value on the SD, on the DOOR/OXY page:

Fill the crew oxygen cylinder (5750HM1) AMM 12-14-35-600-001.

(2) Different from the value on the SD, on the DOOR/OXY page:

Replace the XMTR/PRESS REG-OXY [4HT] AMM 35-13-15-000-802 and AMM 35-13-15-400-802.

(a) If the fault continues:

Replace the OXYGEN CYLINDER [5750HM1] AMM 35-11-41-000-802 and AMM 35-11-41-400-802.

Subtask 35-10-00-810-088-B ** ON A/C NOT FOR ALL

B. If, during the check of the pressure of the crew oxygen-storage cylinder (5750HM2), the value on the pressure gage is:
(1) The same as the value on the SD, on the DOOR/OXY page:

Fill the crew oxygen cylinder (5750HM2) AMM 12-14-35-600-001.

(2) Different from the value on the SD, on the DOOR/OXY page:

Replace the PRESS.TRANSM.REGULATO [4HT2] AMM 35-13-15-000-802 and AMM 35-13-15-400-802.

(a) If the fault continues:

Replace the OXYGEN CYLINDER [5750HM2] AMM 35-11-41-000-802 and AMM 35-11-41-400-802.

Subtask 35-10-00-700-056-A

C. Test
(1) Make sure that there is no amber pressure value and no amber half box on the DOOR/OXY page.

5. Close-up
Subtask 35-10-00-860-059-A

A. Put the aircraft back to its initial configuration.
(1) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
AMM 31-60-00-860-002.
(2) De-energize the aircraft electrical circuits
AMM 24-41-00-862-002.

[Rev.8 from Aug 2018] 2026.04.04 04:33:35 UTC