Installation of the Keypad

TASK 52-51-15-400-001-A
Installation of the Keypad

FIN: 25MQ

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

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 52-51-00-710-003-A	Operational Test of the Emergency Access
Keypad - Removal/Installation

3. Job Set-up
Subtask 52-51-15-860-051-A

A. Aircraft Maintenance Configuration
(1) Make sure that the access to the cockpit is available.
(2) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).

Subtask 52-51-15-865-051-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	DOORS/PAX/MONG	1MQ	T13
** ON A/C NOT FOR ALL
122VU	DOORS CKPT LOCK	1MQ	T13
122VU	COCKPIT DOOR LOCK SYSTEM	1MQ	T13

4. Procedure
Subtask 52-51-15-860-053-D ** ON A/C NOT FOR ALL

A. Electro Magnetic Interferences (EMI)
(1) If an Onboard Mobile-Telephony System (OMTS) is installed and energized, make sure that electromagnetic interference will not have an effect on the operation of the equipment you install. If the part number of the equipment that you will install:

Is the same as the part number you removed, continue with the installation procedure
Is not the same as the part number you removed, deactivate the OMTS (Ref. AMM D/O 44-34-00-04).

Subtask 52-51-15-420-050-A

B. Installation of the Keypad:
(1) If necessary, open the Forward Attendant Panel (FAP) 120RH.
(2) Clean the component interfaces and the adjacent area.
(3) Do an inspection of the component interfaces and the adjacent area.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Put the keypad (1) in position on the mounting bracket.
(6) Install the screws (3) to attach the keypad (1).
(7) Remove the CAP-BLANKING from each electrical connector and receptacle.
(8) Connect the electrical connector (2) to the keypad (1).
(9) Close the FAP.

Subtask 52-51-15-865-052-A

C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	DOORS/PAX/MONG	1MQ	T13
** ON A/C NOT FOR ALL
122VU	DOORS CKPT LOCK	1MQ	T13
122VU	COCKPIT DOOR LOCK SYSTEM	1MQ	T13

Subtask 52-51-15-720-050-A

D. Do the operational test of the emergency access to make sure that the keypad operates correctly (Ref. AMM TASK 52-51-00-710-003).

5. Close-up
Subtask 52-51-15-860-052-A

A. Put the aircraft back to the serviceable condition.
(1) Make sure that the cockpit door is open.

[Rev.10 from 2021] 2026.04.02 06:28:25 UTC