Operational Test of the SELCAL System

TASK 23-51-00-710-002-A
Operational Test of the SELCAL System

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: During this test, the aircraft must be in an open area.

ZONE: 210

1. Reason for the Job
To do a check of the operation of the SELCAL code panel.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	BOOMSET 600 OHMS

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)

3. Job Set-up
Subtask 23-51-00-860-052-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).
(2) On all the ACPs, make sure that:

The INT/RAD selector switch is in the middle position.
All transmission pushbutton switches are fully out.
All reception pushbutton switches are pushed (no reception).

(3) On the Captain's station, connect a BOOMSET 600 OHMS to the jack panel.

Subtask 23-51-00-865-051-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	CAPT/LOUD/SPKR	5WW	F10
49VU	FWS/FWC1/SPLY	3WW	F01
49VU	COM/RMP/1	2RG1	G10
49VU	COM/VHF/1	2RC1	G09
** ON A/C NOT FOR ALL
49VU	COM/AUDIO/ACP/F/O	5RN	G07
** ON A/C NOT FOR ALL
49VU	COM/AUDIO/FLT/INTPH	9RN	G08
49VU	COM/AUDIO/ACP/CAPT	4RN	G06
** ON A/C NOT FOR ALL
49VU	COM/ACP F/O/BITE/ INT 2 AUDIO/3&5 OCCPNT	5RN	G07
** ON A/C NOT FOR ALL
49VU	COM/INT/1+2	9RN	G08
49VU	COM/ACP CAPT/SELCAL/INT 1 AUDIO/AVNCS	4RN	G06
** ON A/C NOT FOR ALL
49VU	HF1	1RE1	HA14
** ON A/C NOT FOR ALL
121VU	COM NAV/VHF/3	2RC3	L05
121VU	COM NAV/VHF/2	2RC2	L04
** ON A/C NOT FOR ALL
121VU	COM NAV/RMP/2	2RG2	L02
121VU	COM NAV/SELCAL	8RN	M04
121VU	COM NAV/ACP/THIRD/OCCPNT	6RN	M02
121VU	EIS/F/O/LOUD/SPKR	4WW	P08
121VU	EIS/FWC2/SPLY	2WW	Q07
** ON A/C NOT FOR ALL
121VU	COM/VHF/3	2RC3	L05
121VU	COM/VHF/2	2RC2	L04
** ON A/C NOT FOR ALL
121VU	COM NAV/RMP/3	2RG3	L03
** ON A/C NOT FOR ALL
121VU	COM NAV/HF2	1RE2	L13
** ON A/C NOT FOR ALL
121VU	COM NAV/ACP/FOURTH/OCCPNT	20RN	M01

4. Procedure

NOTE: All types of equipment that you can use to do the SELCAL test are permitted for this procedure.

Subtask 23-51-00-710-054-C ** ON A/C NOT FOR ALL

WARNING: OBEY THE RADIO REGULATIONS AND MAKE SURE THAT THE FREQUENCY IS AVAILABLE BEFORE YOU TRANSMIT.

A. Operational Test of the SELCAL System

NOTE: Do this test with the VHF1 system.
You must do this procedure again with the VHF2 and VHF3 systems. The procedure is the same and when you use the VHF2 and VHF3 systems, refer to information between parentheses.

ACTION	RESULT
1.On the RMP1:
Set the ON/OFF selector switch to ON.	The RMP shows the last frequencies and the last function used.
Push the VHF1 (VHF3) pushbutton switch.	The green LED on this pushbutton switch comes on.
In the STBY/CRS display window, with the dual selector knob, set the frequency that the ground station can use in VHF.
Start this frequency. To do this, push the transfer pushbutton switch (double arrow) between the two display windows.	The frequency set comes into view in the ACTIVE display window.
2.On the RMP2, set the frequencies related to the VHF2 system. Do the procedure of paragraph 1.
3.On the CAPT ACP:
Push the VHF1 (VHF2, VHF3) transmission pushbutton switch.	The green bars on the VHF1 (VHF2, VHF3) transmission pushbutton switch come on.
Push and release the VHF1 (VHF2, VHF3) reception pushbutton switch.	The reception pushbutton switch is moves fully out and comes on.
Push the PTT switch of the CAPT sidestick controller.
Transmit the SELCAL code of the aircraft to the ground station. Tell the ground station to make a SELCAL call on the VHF1 (VHF2, VHF3) system.
Release the PTT switch of the CAPT sidestick controller.	On each ACP, the amber CALL legend of the VHF1 (VHF2, VHF3) transmission pushbutton switch flashes.
	You can hear the buzzer.
4.On one of the ACPs, push the RESET pushbutton switch and release it.	On all ACPs, the amber CALL legend of the VHF1 (VHF2, VHF3) transmission pushbutton switch goes off. The buzzer stops.

Subtask 23-51-00-710-054-E ** ON A/C NOT FOR ALL

WARNING: OBEY THE RADIO REGULATIONS AND MAKE SURE THAT THE FREQUENCY IS AVAILABLE BEFORE YOU TRANSMIT.

A. Operational Test of the SELCAL System

NOTE: Do this test with the VHF1 and the HF1 systems.
You must do this procedure again with the VHF2 and VHF3 systems. The procedure is the same and when you use the VHF2 and VHF3 systems, refer to information between parentheses.

ACTION	RESULT
1.On the RMP1:
Set the ON/OFF selector switch to ON.	The RMP shows the last frequencies and the last function used.
Push the VHF1 pushbutton switch.	The green LED on this pushbutton switch comes on.
In the STBY/CRS display window, with the dual selector knob, set the frequency that the ground station can use in VHF.
Start this frequency. To do this, push the tranfer pushbutton switch (double arrow) between the two display windows.	The frequency set comes into view in the ACTIVE display window.
2.On the RMP2 and RMP3, set the frequencies related to the VHF2 and VHF3 systems. Do the procedure of paragraph 1.
3.On the CAPT ACP:
Push the VHF1 (VHF2, VHF3) transmission pushbutton switch.	The green bars on the VHF1 (VHF2, VHF3) transmission pushbutton switch come on.
Push and release the VHF1 (VHF2, VHF3) reception pushbutton switch.	The reception pushbutton switch moves fully out and comes on.
Push the PTT switch of the CAPT sidestick controller.
Transmit the SELCAL code of the aircraft to the ground station. Tell the ground station to make a SELCAL call on the VHF1 (VHF2, VHF3) system.
Release the PTT switch of the CAPT sidestick controller.	On each ACP, the amber CALL legend of the VHF1 (VHF2, VHF3) transmission pushbutton switch flashes.
	You can hear the buzzer.
4.On one of the ACPs, push the RESET pushbutton switch and release it.	On all ACPs, the amber CALL legend of the VHF1 (VHF2, VHF3) transmission pushbutton switch goes off. The buzzer stops.
5.On the RMP1:
Push the HF1 pushbutton switch	The SEL indicator light (amber LED) comes on. On the RMP1: The green LED on the VHF1 pushbutton switch goes off. The green LED on the HF1 pushbutton switch comes on.
In the STBY/CRS display window, with the dual selector knob, set the frequency that the ground station can use in HF.
Start this frequency. To do this, push the transfer pushbutton switch (double arrow) between the two display windows.	The frequency set comes into view, in the ACTIVE display window.
6.On the CAPT ACP:
Push the HF1 transmission pushbutton switch.	The green bars on the VHF1 (VHF2, VHF3) transmission pushbutton switch go off. The green bars on the HF1 transmission pushbutton switch come on.
Push and release the VHF1 (VHF2, VHF3) reception pushbutton switch.	This pushbutton switch moves in (to the initial position) and the annunciator light goes off.
Push and release the HF1 reception pushbutton switch.	The reception pusbutton switch moves fully out and comes on.
Push the PTT switch of the CAPT sidestick controller.	During the tuning (which continues for approximately 5 seconds), the reception stops and you can hear a signal of 1000 Hz in the boomset.
Tell the ground station to make a SELCAL call on the HF1 system.
Release the PTT switch of the CAPT sidestick controller.	On each ACP, the amber CALL legend of the HF1 transmission pushbutton switch flashes. You can hear the buzzer.
7.On one of the ACPs, push the RESET pushbutton switch and release it.	On all ACPs, the amber CALL legend of the HF1 transmission pushbutton switch goes off. The buzzer stops.

Subtask 23-51-00-710-054-F ** ON A/C NOT FOR ALL

WARNING: OBEY THE RADIO REGULATIONS AND MAKE SURE THAT THE FREQUENCY IS AVAILABLE BEFORE YOU TRANSMIT.

A. Operational Test of the SELCAL System

ACTION	RESULT
1.On the RMP1:
Set the ON/OFF selector switch to ON.	The RMP shows the last frequencies and the last function used.
Push the VHF1 (VHF3) pushbutton switch.	The green LED on this pushbutton switch comes on.
In the STBY/CRS display window, with the dual selector knob, set the frequency that the ground station can use in VHF.
Start this frequency. To do this, push the transfer pushbutton switch (double arrow) between the two display windows.	The frequency set comes into view in the ACTIVE display window.
2.On the RMP2, set the frequencies related to the VHF2 system. Do the procedure of paragraph 1.
3.On the CAPT ACP:
Push the VHF1 (VHF2, VHF3) transmission pushbutton switch.	The green bars on the VHF1 (VHF2, VHF3) transmission pushbutton switch come on.
Push and release the VHF1 (VHF2, VHF3) reception pushbutton switch.	The reception pushbutton switch moves fully out and comes on.
Push the PTT switch of the CAPT sidestick controller.
Transmit the SELCAL code of the aircraft to the ground station. Tell the ground station to make a SELCAL call on the VHF1 (VHF2, VHF3) system.
Release the PTT switch of the CAPT sidestick controller.	On each ACP, the amber CALL legend of the VHF1 (VHF2, VHF3) transmission pushbutton switch flashes.
	You can hear the buzzer.
4.On one of the ACPs, push the RESET pushbutton switch and release it.	On all ACPs, the amber CALL legend of the VHF1 (VHF2, VHF3) transmission pushbutton switch goes off. The buzzer stops.
5.On the RMP1:
Push the HF1 pushbutton switch	The green LED on the VHF1 (VHF3) pushbutton switch goes off. The green LED on the HF1 pushbutton switch comes on.
In the STBY/CRS display window, with the dual selector knob, set the frequency that the ground station can use in HF.
Start this frequency. To do this, push the transfer pushbutton switch (double arrow) between the two display windows.	The frequency set comes into view, in the ACTIVE display window.
6.On the CAPT ACP:
Push the HF1 transmission pushbutton switch.	The green bars on the VHF1 (VHF2, VHF3) transmission pushbutton switch go off. The green bars on the HF1 transmission pushbutton switch come on.
Push and release the VHF1 (VHF2, VHF3) reception pushbutton switch.	This pushbutton switch moves in (to the initial position) and the annunciator light goes off.
Push and release the HF1 reception pushbutton switch.	The reception pusbutton switch moves fully out and comes on.
Push the PTT switch of the CAPT sidestick controller.	During the tuning (which continues for approximately 5 seconds), the reception stops and you can hear a signal of 1000 Hz in the boomset.
Tell the ground station to make a SELCAL call on the HF1 system.
Release the PTT switch of the CAPT sidestick controller.	On each ACP, the amber CALL legend of the HF1 transmission pushbutton switch flashes. You can hear the buzzer.
7.On one of the ACPs, push the RESET pushbutton switch and release it.	On all ACPs, the amber CALL legend of the HF1 transmission pushbutton switch goes off. The buzzer stops.

Subtask 23-51-00-710-054-I ** ON A/C NOT FOR ALL

WARNING: OBEY THE RADIO REGULATIONS AND MAKE SURE THAT THE FREQUENCY IS AVAILABLE BEFORE YOU TRANSMIT.

A. Operational Test of the SELCAL System

NOTE: Do this test with the VHF1 and the HF1 systems.
You must do this procedure again with the VHF2, VHF3 and HF2 systems. The procedure is the same and when you use the VHF2, VHF3 and HF2 systems, refer to information between parentheses.

ACTION	RESULT
1.On the RMP1:
Set the ON/OFF selector switch to ON.	The RMP shows the last frequencies and the last function used.
Push the VHF1 (VHF3) pushbutton switch.	The green LED on this pushbutton switch comes on. The SEL indicator light (amber LED) comes on (only for the VHF3 system).
In the STBY/CRS display window, with the dual selector knob, set the frequency that the ground station can use in VHF.
Start this frequency. To do this, push the transfer pushbutton switch (double arrow) between the two display windows.	The frequency set comes into view in the ACTIVE display window.
2.On the RMP2, set the frequencies related to the VHF2 system. Do the procedure of paragraph 1.
3.On the CAPT ACP:
Push the VHF1 (VHF2, VHF3) transmission pushbutton switch.	The green bars on the VHF1 (VHF2, VHF3) transmission pushbutton switch come on.
Push and release the VHF1 (VHF2, VHF3) reception pushbutton switch.	The reception pushbutton switch moves fully out and comes on.
Push the PTT switch of the CAPT sidestick controller.
Transmit the SELCAL code of the aircraft to the ground station. Tell the ground station to make a SELCAL call on the VHF1 (VHF2, VHF3) system.
Release the PTT switch of the CAPT sidestick controller.	On each ACP, the amber CALL legend of the VHF1 (VHF2, VHF3) pushbutton switch flashes.
	You can hear the buzzer.
4.On one of the ACPs, push the RESET pushbutton switch and release it.	On all ACPs, the amber CALL legend of the VHF1 (VHF2, VHF3) transmission pushbutton switch goes off. The buzzer stops.
5.On the RMP1:
Push the HF1 pushbutton switch	The green LED on the VHF1 (VHF3) pushbutton switch goes off. The green LED on the HF1 pushbutton switch comes on. The SEL indicator light comes on.
In the STBY/CRS display window, with the dual selector knob, set the frequency that the ground station can use in HF.
Start this frequency. To do this, push the transfer pushbutton switch (double arrow) between the two display windows.	The frequency set comes into view, in the ACTIVE display window.
6.On the RMP2:
Push the HF2 pushbutton switch	The green LED on the VHF2 pushbutton switch goes off. The green LED on the HF2 pushbutton switch comes on. The SEL indicator light comes on.
In the STBY/CRS display window, with the dual selector knob, set the frequency that the ground station can use in HF.
Start this frequency. To do this, push the transfer pushbutton switch (double arrow) between the two display windows.	The frequency set comes into view, in the ACTIVE display window.
7.On the CAPT ACP:
Push the HF1 (HF2) transmission pushbutton switch.	The green bars on the VHF1 (VHF2, VHF3) transmission pushbutton switch go off. The green bars on the HF1 (HF2) transmission pushbutton switch come on.
Push and release the VHF1 (VHF2, VHF3) reception pushbutton switch.	This pushbutton switch moves in (to the initial position) and the annunciator light goes off.
Push and release the HF1 (HF2) reception pushbutton switch.	The reception pusbutton switch moves fully out and comes on.
Push the PTT switch of the CAPT sidestick controller.	During the tuning (which continues for approximately 5 seconds), the reception stops and you can hear a signal of 1000 Hz in the boomset.
Tell the ground station to make a SELCAL call on the HF1 (HF2) system.
Release the PTT switch of the CAPT sidestick controller.	On each ACP, the amber CALL legend of the HF1 (HF2) transmission pushbutton switch flashes. You can hear the buzzer.
8.On one of the ACPs, push the RESET pushbutton switch and release it.	On all ACPs, the amber CALL legend of the HF1 (HF2) transmission pushbutton switch goes off. The buzzer stops.

5. Close-up
Subtask 23-51-00-860-053-B ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the RMPs, set the ON/OFF selector switch to OFF.
(2) On the ACP, push the HF1 (HF2) transmission pushbutton switch and the HF1 (HF2) reception pushbutton switch.
(3) At the Captain station, disconnect the boomset.
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

Subtask 23-51-00-860-053-D ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the RMPs, set the ON/OFF selector switch to OFF.
(2) On the ACP, push the HF1 transmission pushbutton switch and the HF1 reception pushbutton switch.
(3) At the Captain station, disconnect the boomset.
(4) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:12:16 UTC