Operational Test to Read the CLASS III FAULTS

TASK 36-11-00-710-002-A
Operational Test to Read the CLASS III FAULTS

1. Reason for the Job
To read the CLASS III FAULTS
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-32-00-860-011-A	Procedure to Get Access to the SYSTEM REPORT/TEST/PNEU Page

3. Job Set-up
Subtask 36-11-00-861-073-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002)

Subtask 36-11-00-865-055-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	AIR BLEED/X FEED/VALVE/BAT	2HV	D13
49VU	AIR BLEED/ENG 1/CTL	3HA1	D12
49VU	AIR BLEED/ENG 1/MONG	2HA1	D11
122VU	AIR BLEED/ENG 2/CTL	3HA2	Z23
122VU	AIR BLEED/ENG 2/MONG	2HA2	Z22
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20

Subtask 36-11-00-860-051-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) On the AIR COND panel 30VU:

make sure that the ENG1 BLEED and ENG2 BLEED pushbutton switches are pushed (off legend are off),
make sure that the X BLEED selector switch is at AUTO.

(2) On one MCDU, get the SYSTEM REPORT/TEST PNEU menu page (Ref. AMM TASK 31-32-00-860-011).

4. Procedure
Subtask 36-11-00-710-051-A ** ON A/C NOT FOR ALL

A. Operational Test to Read the CLASS III FAULTS

ACTION	RESULT
1.On the MCDU: push the line key adjacent to the BMC 1 (BMC 2) indication.	On the MCDU: the BMC 1 (BMC 2) page comes into view.
2.On the MCDU: push the line key adjacent to the CLASS 3 FAULTS indication.	On the MCDU: the test result indication comes into view: either NO FAULT or LRU FAULT.
3.On the MCDU: push the MCDU MENU mode key.	On the MCDU: the MCDU MENU page comes into view.

5. Close-up
Subtask 36-11-00-862-051-A ** ON A/C NOT FOR ALL

A. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 01:06:46 UTC