Functional Test of the VOR/MKR

TASK 34-55-00-720-001-A
Functional Test of the VOR/MKR

WARNING: MAKE SURE THAT ALL THE CIRCUITS IN MAINTENANCE ARE ISOLATED BEFORE YOU SUPPLY ELECTRICAL POWER TO THE AIRCRAFT. UNWANTED ELECTRICAL POWER CAN BE DANGEROUS.

NOTE: You can do the MKR test only at the end of the VOR1 test.

1. Reason for the Job
To make sure that the VOR and MKR systems operate correctly.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	TEST UNIT-GROUND,VOR/MKR

B. 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 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-10-00-860-004-A	Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-01	Automatic Inertial Reference (IR) Alignment-Procedure
TASK 34-10-00-860-004-A-02	Inertial Reference (IR) Alignment-Procedure to do a Check of the Links between each Flight Management and Guidance Computer (FMGC) and the three Air Data/Inertial Reference Units (ADIRUs)
TASK 34-10-00-860-005-A	ADIRS Stop Procedure
VOR-Frequency and Course Selection ** ON A/C NOT FOR ALL
VOR-Frequency and Course Selection ** ON A/C NOT FOR ALL
VOR-Frequency and Course Selection ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 34-55-00-865-053-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	NAV/VOR/DME/RMI	12FN	F13
** ON A/C ALL
49VU	NAV/VOR/1	2RS1	G13
121VU	COM NAV/VOR/2	2RS2	K08

Subtask 34-55-00-860-052-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002)
(2) Install the TEST UNIT-GROUND,VOR/MKR near the VOR or MKR antenna as shown in the installation instructions.
(3) Do the ADIRS start procedure (Ref. AMM TASK 34-10-00-860-002).
(4) Do the IR alignment procedure (Ref. AMM TASK 34-10-00-860-004).
(5) On the EFIS control sections of the FCU:

set the ADF/VOR selector switches to VOR and the mode selector switches to ROSE/VOR.
push the ILS pushbutton switches.

(6) On the center pedestal, on one ACP, set the VOR1 (2) or MKR reception.
(7) On the center pedestal, on the RMP1 and RMP2:

set the ON/OFF selector switch to ON.

Subtask 34-55-00-860-052-B ** ON A/C NOT FOR ALL

set the ADF/VOR selector switches to VOR and the mode selector switches to ROSE/VOR.
push the ILS pushbutton switches.

(6) On the center pedestal, on one ACP, set the VOR1 (2) or MKR reception.
(7) On the center pedestal, on the RMP1 and RMP2:

set the ON/OFF selector switch to ON.

(8) On the VOR/ADF/DME RMI:

set the VOR/ADF selector switches to VOR.

4. Procedure
Subtask 34-55-00-720-050-B ** ON A/C NOT FOR ALL

A. Test of the VOR Reception and Identification

ACTION	RESULT
1.On the test unit:
set the frequency of the VOR test unit and then set a bearing of 0°.
2.On the RMP1 (RMP2):
push the NAV pushbutton switch.	On the RMP, the green LED on this pushbutton switch comes on.
push the VOR pushbutton switch.	On the RMP, the green LED on this pushbutton switch comes on.
set the VOR1 (VOR2) frequency of the VOR test unit and then set a course of C000 . VOR-Frequency and Course Selection ** ON A/C NOT FOR ALL	On the RMP1 (RMP2): the frequency comes into view in the left window. the course comes into view in the right window. On the CAPT and F/O NDs: the VOR1 (VOR2) frequency and the CRS 000 indications come into view in the top right corner. the VOR1 (VOR2) indication and the VOR1 (VOR2) frequency come into view in the left (right) lower corner. the outline of the pointer comes into view in the left (right) lower corner. the dagger shaped pointer (course pointer) shows 0°. the VOR1 (VOR2) pointer comes into view and shows 0°. the lateral deviation bar and the arrow that shows the TO indication come into view and are on the same axis as the dagger shaped pointer (course pointer). On the VOR/ADF/DME RMI: the VOR1 (VOR2) pointer shows 0°.
set a course of C005 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 5° and the lateral deviation bar moves to the left and stops on the first dot.
set a course of C010 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 10° and the lateral deviation bar moves to the left and stops on the second dot.
set a course of C355 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 355° and the lateral deviation bar moves to the right and stops on the first dot.
set a course of C350 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 350° and the lateral deviation bar moves to the right and stops on the second dot.
3.On the test unit:
set a bearing of 135°.	On the CAPT and F/O NDs: the VOR1 (VOR2) pointer shows 135°. the lateral deviation bar moves to the right and the arrow indicates FROM. On the VOR/ADF/DME RMI: the VOR1 (VOR2) pointer shows 135°.
4.On the RMP1 (RMP2):
set a course of C135.	On the CAPT and F/O NDs: the CRS 135° indication comes into view in the top right corner. the set dagger shaped pointer (course pointer) shows 135°. the lateral deviation bar moves to the center and the arrow indicates TO.
set a course of C315.	On the CAPT and F/O NDs: the CRS 315° indication comes into view in the top right corner. the set dagger shaped pointer (course pointer) shows 315°. the lateral deviation bar moves and then returns to the center and the arrow indicates FROM.
5.On the test unit: set the test unit in the OFF position	On the CAPT ND: the VOR1 (VOR2) pointer goes out of view the lateral deviation bar and the arrow that indicates FROM/TO go out of view.
	On the F/O ND: the VOR1 (VOR2) pointer goes out of view
	On the VOR/ADF/DME RMI: the VOR1 (VOR2) pointer goes to the 3 o'clock position.
6.On the test unit:
set the test unit on the ON position and set the transmission of the identification signal.	In the loudspeaker, you can hear the audio signal.
7.On the ACP:
adjust the volume until you get the required level.	The adjustment is continuous and no unwanted noise is heard.
8.On the test unit:
cancel the transmission of the audio signal.	You cannot hear the signal.
9.On the RMP1 (RMP2):
push the NAV pushbutton switch.	On the RMP, the green LED on this pushbutton switch goes off.

Subtask 34-55-00-720-050-D ** ON A/C NOT FOR ALL

A. Test of the VOR Reception and Identification

ACTION	RESULT
1.On the test unit:
set the frequency of the VOR test unit and then set a bearing of 0°.
2.On the RMP1 (RMP2):
push the NAV pushbutton switch.	On the RMP, the green LED on this pushbutton switch comes on.
push the VOR pushbutton switch.	On the RMP, the green LED on this pushbutton switch comes on.
set the VOR1 (VOR2) frequency of the VOR test unit and then set a course of C000 . VOR-Frequency and Course Selection ON A/C NOT FOR ALL VOR-Frequency and Course Selection ON A/C NOT FOR ALL	On the RMP1 (RMP2): the frequency comes into view in the left window. the course comes into view in the right window. On the CAPT and F/O NDs: the VOR1 (VOR2) frequency and the CRS 000 indications come into view in the top right corner. the VOR1 (VOR2) indication and the VOR1 (VOR2) frequency come into view in the left (right) lower corner. the outline of the pointer comes into view in the left (right) lower corner. the dagger shaped pointer (course pointer) shows 0°. the VOR1 (VOR2) pointer comes into view and shows 0°. the lateral deviation bar and the arrow that shows the TO indication come into view and are on the same axis as the dagger shaped pointer (course pointer). On the VOR/ADF/DME RMI: the VOR1 (VOR2) pointer shows 0°.
set a course of C005 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 5° and the lateral deviation bar moves to the left and stops on the first dot.
set a course of C010 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 10° and the lateral deviation bar moves to the left and stops on the second dot.
set a course of C355 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 355° and the lateral deviation bar moves to the right and stops on the first dot.
set a course of C350 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 350° and the lateral deviation bar moves to the right and stops on the second dot.
3.On the test unit:
set a bearing of 135°.	On the CAPT and F/O NDs: the VOR1 (VOR2) pointer shows 135°. the lateral deviation bar moves to the right and the arrow indicates FROM. On the VOR/ADF/DME RMI: the VOR1 (VOR2) pointer shows 135°.
4.On the RMP1 (RMP2):
set a course of C135.	On the CAPT and F/O NDs: the CRS 135° indication comes into view in the top right corner. the set dagger shaped pointer (course pointer) shows 135°. the lateral deviation bar moves to the center and the arrow indicates TO.
set a course of C315.	On the CAPT and F/O NDs: the CRS 315° indication comes into view in the top right corner. the set dagger shaped pointer (course pointer) shows 315°. the lateral deviation bar moves and then returns to the center and the arrow indicates FROM.
5.On the test unit: set the test unit in the OFF position	On the CAPT ND: the VOR1 (VOR2) pointer goes out of view the lateral deviation bar and the arrow that indicates FROM/TO go out of view.
	On the F/O ND: the VOR1 (VOR2) pointer goes out of view
	On the VOR/ADF/DME RMI: the flag VOR1 (VOR2) comes into view.
6.On the test unit:
set the test unit on the ON position and set the transmission of the identification signal.	In the loudspeaker, you can hear the audio signal.
7.On the ACP:
adjust the volume until you get the required level.	The adjustment is continuous and no unwanted noise is heard.
8.On the test unit:
cancel the transmission of the audio signal.	You cannot hear the signal.
9.On the RMP1 (RMP2):
push the NAV pushbutton switch.	On the RMP, the green LED on this pushbutton switch goes off.

Subtask 34-55-00-720-050-E ** ON A/C NOT FOR ALL

A. Test of the VOR Reception and Identification

ACTION	RESULT
1.On the test unit:
set the frequency of the VOR test unit and then set a bearing of 0°.
2.On the RMP1 (RMP2):
push the NAV pushbutton switch.	On the RMP, the green LED on this pushbutton switch comes on.
push the VOR pushbutton switch.	On the RMP, the green LED on this pushbutton switch comes on.
set the VOR1 (VOR2) frequency of the VOR test unit and then set a course of C000 . VOR-Frequency and Course Selection ON A/C NOT FOR ALL VOR-Frequency and Course Selection ON A/C NOT FOR ALL VOR-Frequency and Course Selection ** ON A/C NOT FOR ALL	On the RMP1 (RMP2): the frequency comes into view in the left window. the course comes into view in the right window. On the CAPT and F/O NDs: the VOR1 (VOR2) frequency and the CRS 000 indications come into view in the top right corner. the VOR1 (VOR2) indication and the VOR1 (VOR2) frequency come into view in the left (right) lower corner. the outline of the pointer comes into view in the left (right) lower corner. the dagger shaped pointer (course pointer) shows 0°. the VOR1 (VOR2) pointer comes into view and shows 0°. the lateral deviation bar and the arrow that shows the TO indication come into view and are on the same axis as the dagger shaped pointer (course pointer).
set a course of C005 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 5° and the lateral deviation bar moves to the left and stops on the first dot.
set a course of C010 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 10° and the lateral deviation bar moves to the left and stops on the second dot.
set a course of C355 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 355° and the lateral deviation bar moves to the right and stops on the first dot.
set a course of C350 .	On the CAPT and F/O NDs the dagger shaped (course pointer) shows 350° and the lateral deviation bar moves to the right and stops on the second dot.
3.On the test unit:
set a bearing of 135°.	On the CAPT and F/O NDs: the VOR1 (VOR2) pointer shows 135°. the lateral deviation bar moves to the right and the arrow indicates FROM.
4.On the RMP1 (RMP2):
set a course of C135.	On the CAPT and F/O NDs: the CRS 135° indication comes into view in the top right corner. the set dagger shaped pointer (course pointer) shows 135°. the lateral deviation bar moves to the center and the arrow indicates TO.
set a course of C315.	On the CAPT and F/O NDs: the CRS 315° indication comes into view in the top right corner. the set dagger shaped pointer (course pointer) shows 315°. the lateral deviation bar moves and then returns to the center and the arrow indicates FROM.
5.On the test unit: set the test unit in the OFF position	On the CAPT ND: the VOR1 (VOR2) pointer goes out of view the lateral deviation bar and the arrow that indicates FROM/TO go out of view.
	On the F/O ND: the VOR1 (VOR2) pointer goes out of view
6.On the test unit:
set the test unit on the ON position and set the transmission of the identification signal.	In the loudspeaker, you can hear the audio signal.
7.On the ACP:
adjust the volume until you get the required level.	The adjustment is continuous and no unwanted noise is heard.
8.On the test unit:
cancel the transmission of the audio signal.	You cannot hear the signal.
9.On the RMP1 (RMP2):
push the NAV pushbutton switch.	On the RMP, the green LED on this pushbutton switch goes off.

Subtask 34-55-00-720-051-A ** ON A/C NOT FOR ALL

B. Test of the MKR Reception and Identification

ACTION	RESULT
1.On the test unit:
set a frequency of 75 MHz with a signal modulation of 400Hz (OM signal).	On the CAPT and F/O PFDs: the OM indication comes into view on the right. In the loudspeaker, you can hear the audio signal.
2.On the ACP:
adjust the volume until you get the required level.	In the loudspeaker, the adjustment is continuous and no unwanted noise can be heard.
3.On the test unit:
modulate the signal to 1300Hz (MM signal).	On the CAPT and F/O PFDs: the MM indication comes into view on the right. In the loudspeaker, you can hear the audio signal.
modulate the signal to 3000Hz (AWY or IM signal).	On the CAPT and F/O PFDs: the AWY indication comes into view on the right. In the loudspeaker, you can hear the audio signal.
cancel the 75MHz frequency.	On the CAPT and F/O PFDs: the last MKR indication goes out of view. In the loudspeaker, you cannot hear the transmission of the audio signal.

Subtask 34-55-00-720-051-B ** ON A/C NOT FOR ALL

B. Test of the MKR Reception and Identification

ACTION	RESULT
1.On the test unit:
set a frequency of 75 MHz with a signal modulation of 400Hz (OM signal).	On the CAPT and F/O PFDs: the OM indication comes into view on the right. In the loudspeaker, you can hear the audio signal.
2.On the ACP:
adjust the volume until you get the required level.	In the loudspeaker, the adjustment is continuous and no unwanted noise can be heard.
3.On the test unit:
modulate the signal to 1300Hz (MM signal).	On the CAPT and F/O PFDs: the MM indication comes into view on the right. In the loudspeaker, you can hear the audio signal.
modulate the signal to 3000Hz (AWY or IM signal).	On the CAPT and F/O PFDs: the IM indication comes into view on the right. In the loudspeaker, you can hear the audio signal.
cancel the 75MHz frequency.	On the CAPT and F/O PFDs: the last MKR indication goes out of view. In the loudspeaker, you cannot hear the transmission of the audio signal.

5. Close-up
Subtask 34-55-00-860-053-A

A. Put the aircraft back to its initial configuration.
(1) On the EFIS control sections of the FCU:

set the ADF/VOR selector switches to OFF.
release the ILS pushbutton switches.

(2) Do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005).
(3) On the center pedestal, on the RMP, set the ON/OFF switch to OFF.
(4) On the center pedestal, on the ACP, release the VOR1 (2) or MKR pushbutton switch.
(5) Stop the test unit.
(6) De-energize the aircraft electrical circuits.
(Ref. AMM TASK 24-41-00-862-002)
(7) Make sure that the work area is clean and clear of tools and other items.

[Rev.10 from 2021] 2026.04.01 12:36:18 UTC