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

TASK 35-10-00-810-818-A
Crew Oxygen Pressure Indication with Amber Half Box on the DOOR/OXY Page

1. Possible Causes

XMTR/PRESS REG-OXY [4HT]
PRESS.TRANSM.REGULATO [4HT2]

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 12-14-35-600-001	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 35-13-15-000-001	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 35-10-00-860-065-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 35-10-00-865-060-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 35-10-00-710-066-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 there is an amber half box on the DOOR/OXY page.
(3) Do an inspection of the oxygen pressure AMM 35-10-00-720-001.

Subtask 35-10-00-710-066-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 half box(es) on the DOOR/OXY page.
(3) Do an inspection of the oxygen pressure AMM 35-10-00-720-001.

4. Fault Isolation
Subtask 35-10-00-810-068-A ** ON A/C NOT FOR ALL

A. If during the check of the pressure of the crew oxygen cylinder, the value is:
(1) The same as the value on the lower ECAM display unit, on the DOOR/OXY page:

No action is necessary.

(2) Different from the value on the lower ECAM display unit, on the DOOR/OXY page:

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

Subtask 35-10-00-710-067-B ** ON A/C NOT FOR ALL

B. Test
(1) Make sure that the oxygen pressure indication is correct on the DOOR/OXY page AMM 35-10-00-720-001.
(a) If necessary, fill the crew oxygen-storage cylinder 5750HM AMM 12-14-35-600-001.

Subtask 35-10-00-810-068-C ** ON A/C NOT FOR ALL

C. If during the check of the pressures of the crew oxygen cylinders, the values are:
(1) The same as the values on the lower ECAM display unit, on the DOOR/OXY page:

No action is necessary.

(2) Different from the values on the lower ECAM display unit, on the DOOR/OXY page:

Replace the XMTR/PRESS REG-OXY [4HT] or PRESS.TRANSM.REGULATO [4HT2] AMM 35-13-15-000-802 AMM 35-13-15-400-802.

Subtask 35-10-00-710-067-D ** ON A/C NOT FOR ALL

D. Test
(1) Make sure that the two oxygen pressure indications are correct on the DOOR/OXY page AMM 35-10-00-720-001.
(a) If necessary, fill the crew oxygen-storage cylinder(s) (5750HM1) and/or (5750HM2) AMM 12-14-35-600-001.

5. Close-up
Subtask 35-10-00-860-066-A

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

[Rev.8 from Aug 2018] 2026.04.04 04:33:37 UTC