DOC AIRBUS | AMM A320FDeactivation of the Key Pad
TASK 52-51-00-040-007-A
Deactivation of the Key Pad
1. Reason for the Job
MMEL 52-51-04A
CDLS KEYPAD
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 52-51-00-860-078-A
Subtask 52-51-00-040-056-A
Subtask 52-51-00-865-068-A
[Rev.10 from 2021]
2026.04.02 07:23:54 UTC
Deactivation of the Key Pad
1. Reason for the Job
MMEL 52-51-04A
CDLS KEYPAD
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| No specific | AR | TIE WRAP(S) |
| No specific | AR | WARNING NOTICE(S) |
| 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) |
Control Unit 24MQSubtask 52-51-00-860-078-A
A. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that access to the cockpit is available.
Subtask 52-51-00-865-109-A (1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Make sure that access to the cockpit is available.
B. Open, safety and tag this(these) circuit breaker(s):
4. Procedure| 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 52-51-00-040-056-A
A. Deactivation of the Key Pad
(2) Carefully remove the control unit (1) until you get access to the electrical connector (4).
(3) Disconnect the electrical connector (4) from the receptacle (3).
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Safety the electrical connector (4) with TIE WRAP(S) on the adjacent fuselage structure.
(6) Carefully install the control unit (1) and tighten the captive screws (2).
(7) Put a WARNING NOTICE(S) on the overhead panel to tell the persons that the keypad is deactivated.
5. Close-upNOTE: If the cockpit door closes during the deactivation procedure and no person is in the cockpit, de-energize the aircraft electrical circuits. This will let you open the cockpit door from the cabin.
(1) Hold the front face of the control unit (1) and loosen the captive screws (2). (2) Carefully remove the control unit (1) until you get access to the electrical connector (4).
(3) Disconnect the electrical connector (4) from the receptacle (3).
(4) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(5) Safety the electrical connector (4) with TIE WRAP(S) on the adjacent fuselage structure.
(6) Carefully install the control unit (1) and tighten the captive screws (2).
(7) Put a WARNING NOTICE(S) on the overhead panel to tell the persons that the keypad is deactivated.
Subtask 52-51-00-865-068-A
A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
Subtask 52-51-00-860-079-A | 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 |
B. Put the system back to the serviceable condition.
(1) Put the aircraft back to the serviceable condition.
(2) Make an entry in the aircraft technical log that the keypad is deactivated.
(1) Put the aircraft back to the serviceable condition.
(2) Make an entry in the aircraft technical log that the keypad is deactivated.