W DOC AIRBUS | AMM A320F

Deactivation of the CDLS Normal System

TASK 52-51-00-040-006-A
Deactivation of the CDLS Normal System

ZONE: 212
Task Summary
Access Test Specific Tools Mhr E/T Nb Men
NOYESNO0.30.31
1. Reason for the Job
MMEL 52-51-01B
CDLS NORMAL SYSTEM
2. Job Set-up Information
 A. Fixtures, Tools, Test and Support Equipment
REFERENCE
QTY
DESIGNATION
No specific
AR
SAFETY CLIP - CIRCUIT BREAKER
 B. Work Zones and Access Panels
ZONE/ACCESS
ZONE DESCRIPTION
212
COCKPIT
 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 52-51-00-861-051-A
A. Energize the Aircraft Electrical Circuits
   (1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
Subtask 52-51-00-865-066-A
B. Table of the circuit breakers used in this procedure:
PANELDESIGNATIONFINLOCATION
** ON A/C NOT FOR ALL
122VUDOORS/PAX/MONG1MQT13
** ON A/C NOT FOR ALL
122VUDOORS CKPT LOCK1MQT13
122VUCOCKPIT DOOR LOCK SYSTEM1MQT13
4. Procedure
Subtask 52-51-00-040-055-A
A. Deactivation of the CDLS Normal System
   (1) Open, safety and tag this(these) circuit breaker(s):
  • 1MQ.
NOTE: All parts of the CDLS (normal and back-up system, if installed) can be inoperative if the complete system is deactivated in the unlocked position and adjustment is not required by regulations for the intended flight.
NOTE: If CKPT DOOR BKUP panel 45VU is installed on overhead panel 20VU and the switch LKG SYS (21MQ) is in the BKUP position:
  • Toggle switch COCKPIT DOOR (26MQ) on center pedestal panel 119VU and keypad 25MQ on the flight attendant panel are inoperative. These cannot be used to unlock and open the cockpit door.
NOTE: If CKPT DOOR BKUP panel 45VU is installed on overhead panel 20VU and the switch LKG SYS (21MQ) is in the BKUP position:
  • The cockpit door can be unlocked and opened from the cockpit side only and cannot be unlocked and opened from the cabin side. You must not close the cockpit door when there is no person inside the cockpit.
5. Close-up
Subtask 52-51-00-860-076-A
A. Aircraft Maintenance Configuration
   (1) Put the aircraft back to the serviceable condition.
   (2) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
   (3) Make an entry in the logbook.
[Rev.10 from 2021] 2026.04.01 01:46:08 UTC
"Aviabrain" 2025