Removal of the Buzzer of the Passenger/Crew Doors

TASK 52-73-23-000-001-A
Removal 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. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. 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
FOR [23WN2] (BUZZER)
841DZ
FOR [25WN1] (BUZZER)
832DZ
FOR [25WN2] (BUZZER)
842DZ

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 25-23-46-000-001-A	Removal of the Door Linings from the Forward Passenger/Crew Doors
TASK 52-10-00-010-001-A	Opening of the Passenger/Crew Door
TASK 52-10-00-860-001-A	Special Precautions before Work on the Passenger/Crew Door
Buzzer of the Passenger/Crew Doors
FOR [23WN2] (BUZZER)
TASK 25-23-46-000-002-A	Removal of the Door Linings from the Aft Passenger/Crew Doors

3. Job Set-up
Subtask 52-73-23-861-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 52-73-23-865-050-A ** ON A/C NOT FOR ALL

B. Open, safety and tag 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 52-73-23-010-050-A ** ON A/C NOT FOR ALL

C. Get Access

WARNING: DO NOT OPEN THE PASSENGER/CREW DOOR IF THE WIND SPEED IS MORE THAN 65 KNOTS.

WARNING: BEFORE YOU START WORK ON THE DOOR, MAKE SURE THAT:

THE EMERGENCY CONTROL HANDLE IS IN THE DISARMED POSITION WITH THE SAFETY PIN INSTALLED.
THE PERCUSSION LEVER OF THE DOOR-DAMPER AND EMERGENCY-OPERATION CYLINDER IS IN THE DISARMED POSITION WITH THE SAFETY PIN INSTALLED.

IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE DOOR CAN OPEN WITH FORCE OR THE ESCAPE SLIDE CAN DEPLOY SUDDENLY. THIS CAN CAUSE INJURY AND/OR DAMAGE.

WARNING: STOP THE OPENING PROCEDURE IF THE RED WARNING LIGHT FLASHES. IF THE RED WARNING LIGHT FLASHES, REMAINING PRESSURE CAN CAUSE THE DOOR TO OPEN SUDDENLY AND CAN:

KILL OR CAUSE SERIOUS INJURY TO PERSONS
CAUSE DAMAGE TO THE AIRCRAFT.

(1) Put an ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position in front of the applicable passenger/crew door:

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

(2) Open the applicable passenger/crew door 831 ( 841) or 832 ( 842) (Ref. AMM TASK 52-10-00-010-001).
(3) Obey the special precautions before you start work on the door (Ref. AMM TASK 52-10-00-860-001).

Subtask 52-73-23-010-051-A ** ON A/C NOT FOR ALL

D. Removal of the Lining Panel

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

(1) Remove the subsequent lining panel from the applicable door:
(a) For the FWD passenger/crew doors (Ref. AMM TASK 25-23-46-000-001):
(2) FOR [23WN1] (BUZZER)
831DZ.
(3) FOR [23WN2] (BUZZER)
841DZ.
(a) For the AFT passenger/crew doors (Ref. AMM TASK 25-23-46-000-002):
(4) FOR [25WN1] (BUZZER)
832DZ.
(a) FOR [25WN2] (BUZZER)
842DZ.

4. Procedure
Subtask 52-73-23-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Buzzer

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

(1) Disconnect the buzzer from the SLIDE ARMED indicator light, if necessary.
(2) Loosen the knurled nut (2) from the buzzer housing (3).
(3) Remove the buzzer housing (3) from the applicable door lining (1).
(4) Remove the screws (4) and (8) from the connectors (6) and (7).
(5) Disconnect and retain the wire harnesses (5) and (9) from the screws (4) and (8).
(6) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

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