Check of the Throttle Control Units

TASK 22-30-00-040-004-A
Check of the Throttle Control Units

ZONE: 210
FIN: 8KS1
FIN: 8KS2

1. Reason for the Job
MMEL 22-30-01A
AUTOTHRUST (A/THR) (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

C. 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 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure

3. Job Set-up
Subtask 22-30-00-860-059-A

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001)
(3) On the center pedestal, make sure that all the throttle control levers are set to IDLE (0 degree TLA).
(4) On the maintenance panel 50VU:

release the ENG FADEC GND PWR 1 and 2 pushbutton switches (The ON legend of these pushbutton switches comes on).

Subtask 22-30-00-865-062-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
** ON A/C NOT FOR ALL
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
121VU	ENGINE/ENG2/FADEC B	4KS2	Q40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R41
** ON A/C ALL
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	Q40
** ON A/C NOT FOR ALL
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40

4. Procedure
Subtask 22-30-00-710-059-A ** ON A/C NOT FOR ALL

A. Operational Test of the Throttle Control Units

ACTION	RESULT
1.Open circuit breakers 2KS1, 2KS2.
2.On the center pedestal: move the ENG1 and 2 throttle control levers.	On the upper ECAM display unit: the small circles on N1 indications follow the position of the throttle control levers.
move the throttle control levers to IDLE position.
3.Close circuit breakers 2KS1, 2KS2.
4.Open circuit breakers 4KS1, 4KS2.
5.On the center pedestal: move the ENG1 and 2 throttle control levers.	On the upper ECAM display unit: the small circles on N1 indications follow the position of the throttle control levers.
move the throttle control levers to IDLE position.
6.Close circuit breakers 4KS1, 4KS2.

Subtask 22-30-00-710-059-B ** ON A/C NOT FOR ALL

WARNING: MAKE SURE THAT YOU OPEN THE CIRCUIT BREAKERS AS FOLLOWS:

1JH, 2JH1 AND 3JH1 BEFORE 2KS1
1JH, 2JH2 AND 3JH2 BEFORE 2KS2.

IF YOU DO NOT OBEY THIS SEQUENCE, THERE IS A RISK OF ELECTROCUTION. THIS IS BECAUSE YOU WILL START CONTINUOUS IGNITION IF YOU OPEN CIRCUIT BREAKER 2KS1 OR 2KS2 FIRST.

A. Operational Test of the Throttle Control Units

ACTION	RESULT
1.On the panel 121VU: open circuit breakers 2JH1, 3JH1, 2JH2 and 3JH2.
2.On the panel 49VU: open circuit breakers 1JH, 2KS1 and 2KS2.
3.On the center pedestal: move the ENG1 and 2 throttle control levers.	On the upper ECAM display unit: the thrust limit mode indication and the EPR value limit follow the position of the throttle control levers.
move the throttle control levers to IDLE position.
4.Close circuit breakers 2KS1, 2KS2.
5.Open circuit breakers 4KS1, 4KS2.
6.On the center pedestal: move the ENG1 and 2 throttle control levers.	On the upper ECAM display unit: the small circles on EPR indications follow the position of the throttle control levers.
move the throttle control levers to IDLE position.
7.Close circuit breakers 4KS1, 4KS2 and then close circuit breakers 1JH, 2JH1, 3JH1, 2JH2 and 3JH2.

5. Close-up
Subtask 22-30-00-860-060-A

A. Put the aircraft back to its initial configuration.
(1) On the maintenance panel 50VU:

push the ENG FADEC GND PWR 1 and 2 pushbutton switches (The ON legend of these pushbutton switches goes off).

(2) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(3) Put a WARNING NOTICE(S) in the cockpit to tell the crew that the autothrust function does not operate.
(4) Make an entry in the logbook.
(5) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.03.31 23:10:02 UTC