(a)
 Remove the section-hose (4) from one side of the mounting rail (5).

 (b)
 Pull and lower the related PSIU (6) to get access to the loudspeaker (2).

 (c)
 Disconnect the eletrical connections (1) from the loudspeaker electrical connectors (7).

 (d)
 Release the spring clips (3) and remove the loudspeaker (2).

 (2)
 Remove the loudspeaker of the AFT entrance area
 (Ref. Fig. 401/TASK 23-73-51-991-001)

 (a)
 Remove the section-hose (4) from one side of the mounting rail (5).

 (b)
 Pull and lower the related PSIU (6) to get access to the loudspeaker (2).

 1EFF : ALL 1 23-73-51Page 404 1 1 May 01/05 1 1 1CES 1

 Loudspeaker of the PSIU
 Figure 401/TASK 23-73-51-991-001

R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-51Page 405 1201-299, 1May 01/05 1 1 1CES 1

 (c) Disconnect the eletrical connections (1) from the loudspeaker electrical connectors (7).
 (d) Remove the srews (8), the washers (9) and the loudspeaker (2). R **ON A/C 106-149, 301-399, 401-499,
 Subtask 23-73-51-020-050-A
 A. Removal of the loudspeaker
 (1) Removal of the loudspeaker from the PSIU and from the FWD and AFT entrance area (Ref. Fig. 401A/TASK 23-73-51-991-001-A)
 (a)
 Remove the section-hose (1) from one side of the mounting rail (2).

 (b)
 Pull and lower the related PSIU (3) to get access to the loudspeaker (4).

 CAUTION : MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU
_______ DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.
 (c)
 Disconnect the electrical connectors (5).

 (d)
 Release the spring clips (6) and remove the loudspeaker (4) from the pins (7).

 **ON A/C ALL
 Subtask 23-73-51-020-066
 B. Removal of the loudspeaker
 (1) Remove the loudspeaker of the circuit breaker panel 2001VU (Ref. Fig. 402/TASK 23-73-51-991-002)
 (a)
 Release the quick release fasteners (3) and let the circuit breaker panel 2001VU (4) hang on the detent hook (5).

 (b)
 Release the detent hook (5) and open the circuit breaker panel 2001VU (4).

 1EFF : ALL 1 23-73-51Page 406 1 1 Aug 01/05 1 1 1CES 1

 Loudspeaker in the PSIU Figure 401A/TASK 23-73-51-991-001-A
R 1EFF : 106-149, 301-399, 401-499, 1 23-73-51Page 407 1 1 Aug 01/05 1 1 1CES 1

 Loudspeaker of the circuit breaker panel 2001VU Figure 402/TASK 23-73-51-991-002
 1EFF : 1 1R 1CES  ALL  1 11 1 23-73-51 Page 408 Aug 01/04

 (c)
 Disconnect the electrical connections (1) from the loudspeaker electrical connectors (2).

 (d)
 Remove the screws (7) and the washers (8) from the loudspeaker (6).

 (e) Remove the loudspeaker (6). R **ON A/C 001-003, 051-052,
 Subtask 23-73-51-020-067
 C. Removal of the loudspeaker
 (1)
 Remove the lavatory loudspeaker of the upper service cabinet panel (Ref. Fig. 403/TASK 23-73-51-991-003)

 (a)
 Push the release lever (1) and open the service cabinet door (2).

 (b)
 Remove the upper cover (6).

 (c)
 Remove the screws (3), the washers (4) and the upper cabinet panel (5).

 (d)
 Disconnect the electrical connections (9) from the loudspeaker electrical connectors (7).

 (e)
 Release the spring clips (8) and remove the loudspeaker (10).

 (2)
 Remove the lavatory loudspeaker of the service cabinet door (Ref. Fig. 404/TASK 23-73-51-991-004)

 (a)
 Push the release lever (1) and open the service cabinet door (2).

 (b)
 Disconnect the electrical connections (5) from the loudspeaker electrical connectors (3).

 (c)
 Release the spring clips (4) and remove the loudspeaker (6).

 1EFF : ALL 1 23-73-51Page 409 1 1 May 01/05 1 1 1CES 1

 Loudspeaker of the lavatory service cabinet panel
 Figure 403/TASK 23-73-51-991-003

R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-51Page 410 1201-299, 1May 01/05 1 1 1CES 1

 Loudspeaker of the lavatory service cabinet door
 Figure 404/TASK 23-73-51-991-004

R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-51Page 411 1201-299, 1May 01/05 1 1 1CES 1R **ON A/C 004-049, 053-099, 101-149, 151-199, 201-299, 301-399, 401-499,
　
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