Installation of the Buzzer of the Passenger/Crew Doors

TASK 52-73-23-400-001-A
Installation of the Buzzer of the Passenger/Crew Doors

ZONE: 831
ZONE: 832
ZONE: 841
ZONE: 842
FIN: 23WN1 ** ON A/C NOT FOR ALL
FIN: 23WN2 ** ON A/C NOT FOR ALL
FIN: 25WN1 ** ON A/C NOT FOR ALL
FIN: 25WN2 ** ON A/C NOT FOR ALL

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
831	FORWARD PASSENGER/CREW DOOR
832	AFT PASSENGER/CREW DOOR
841	FORWARD PASSENGER/CREW DOOR
842	AFT PASSENGER/CREW DOOR
831, 832, 841, 842
FOR [23WN1] (BUZZER)
831DZ, 832DZ
FOR [23WN2] (BUZZER)
841DZ
FOR [25WN2] (BUZZER)
842DZ

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 52-10-00-410-001-A	Closing of the Passenger/Crew Door
TASK 52-10-00-860-001-A	Special Precautions before Work on the Passenger/Crew Door
TASK 52-10-00-860-002-A	Special Precautions after Work on the Passenger/Crew Door
TASK 52-73-00-710-001-A	Operational Test of the Emergency Escape-Slide Release-System of the Passenger/Crew Doors
Buzzer of the Passenger/Crew Doors

3. Job Set-up
Subtask 52-73-23-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Make sure that the ground service network is energized
(Ref. AMM TASK 24-42-00-862-001)
(2) Make sure that the access platform is in position at the applicable passenger/crew door:

At zone 831 (841) for the FWD passenger/crew door.
At zone 832 (842) for the AFT passsenger/crew door.

(3) Make sure that you obeyed the safety precautions (Ref. AMM TASK 52-10-00-860-001).

Subtask 52-73-23-865-051-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	EIS/SLIDES/ARM AND WARN/FLT	15WN	P11
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10
121VU	EIS/SDAC1 AND 2/DOOR/DET/PAX	48WV	P05

4. Procedure
Subtask 52-73-23-910-050-A ** ON A/C NOT FOR ALL

A. Preparation for the Installation
(1) Clean the component interfaces and the adjacent area.
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Make sure that all the electrical connections are clean and in the correct condition.

Subtask 52-73-23-420-050-A ** ON A/C NOT FOR ALL

B. Installation of the Buzzer

Buzzer of the Passenger/Crew Doors ** ON A/C NOT FOR ALL

(1) Remove the CAP-BLANKING from each electrical connector and receptacle.
(2) Put the electrical connectors of the wire harnesses (5) and (9) on the screws (4) and (8).
(3) Install the screws (4) and (8) in the connectors (6) and (7) and tighten them.
(4) Put the buzzer housing (3) into the door lining (1) and attach it with the knurled nut (2).
(5) Connect the buzzer to the SLIDE ARMED indicator light, if necessary.

Subtask 52-73-23-865-052-A ** ON A/C NOT FOR ALL

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
121VU	EIS/SLIDES/ARM AND WARN/FLT	15WN	P11
121VU	EIS/SLIDES/ARM AND WARN/GND	13WN	P10
121VU	EIS/SDAC1 AND 2/DOOR/DET/PAX	48WV	P05

Subtask 52-73-23-710-050-A ** ON A/C NOT FOR ALL

D. Operational Test
(1) Do an operational test of the emergency escape-slide release-mechanism of the passenger/crew door (Ref. AMM TASK 52-73-00-710-001), if applicable.

5. Close-up
Subtask 52-73-23-410-050-A ** ON A/C NOT FOR ALL

A. Installation of the Lining Panel
(1) Install the subsequent lining panel on the applicable door:
(a) For the FWD passenger/crew doors:
(b) FOR [23WN1] (BUZZER)
831DZ.
(c) FOR [23WN2] (BUZZER)
841DZ.
(d) For the AFT passenger/crew doors:
(e) FOR [23WN1] (BUZZER)
832DZ.
(f) FOR [25WN2] (BUZZER)
842DZ.

Subtask 52-73-23-410-051-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Obey the special precautions after work on the door (Ref. AMM TASK 52-10-00-860-002).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Make sure that the work area is clean and clear of tools and other items.
(4) Close the applicable passenger/crew door 831 ( 841) or 832 ( 842) (Ref. AMM TASK 52-10-00-410-001).
(5) Remove the access platform(s).

[Rev.9 from 2019] 2026.04.02 06:28:37 UTC