B.  Access
 (1)  Location Zones
 211 Control Cabin (LH side)
 221 Passenger Cabin (LH side)

 C.  Forward Lavatory-A Speaker Removal (Fig. 401)
 S 864-002
 (1)  Open this circuit-breaker on the overhead circuit-breaker panel, P11, and attach a DO-NOT-CLOSE tag:
 (a)  11C22, PASS ADRS AMPL
 S 014-008
 (2)  Remove the lens cover on the fluorescent lamp to the right of the mirror (AMM 33-26-00/201).
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MAINTENANCE MANUAL

Lavatory PA Speaker Installation
Figure 401

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MAINTENANCE MANUAL

 S 034-005
 (3)
Disconnect the speaker wires from the transformer terminals.

 S 034-006

 (4)  
Remove the four screws and washers that hold the speaker to the inboard wall.

 S 024-007

 (5)  
Remove the speaker.

 TASK 23-31-05-404-009
 3. Forward Lavatory-A Speaker Installation
_______________________________________
 A. References
 (1)  
AMM 24-22-00/201, Electrical Power - Control

 (2)  
AMM 33-26-00/201, Lavatory Lights - Maintenance Practices

 B. Access
 (1)  Location Zones 211 Control Cabin - Sect 41 (LH side) 221 Passenger Cabin - Sect 41 (LH side)
 C. Forward Lavatory-A Speaker Installation (Fig. 401)
 S 424-010
 (1)  
Put the speaker into the inboard wall.

 S 434-011

 (2)  
Install the four screws and washers the hold the speaker on the inboard wall.

 S 434-042

 (3)  
Connect the speaker wires to the correct locations on the transformer terminals.

 (4)  
Install the lens cover on the fluorescent lamp (AMM 33-26-00/201).

 S 414-012
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757 MAINTENANCE MANUAL
 D. Lavatory Speaker Installation Test
 S 864-009
 (1)  
Supply the electrical power (AMM 24-22-00/201).

 S 864-010

 (2)  
Remove the DO-NOT-CLOSE tag and close this circuit-breaker on the P11 panel:

 (a)  11C22, PASS ADRS AMPL
 S 714-013
 (3)  Speak into an attendant handset.
 (a) Make sure the voice comes through the speaker.
 E. Put the Airplane Back to Its Usual Condition
 S 864-015
 (1)  
Put the handset back on the hook.

 S 864-016

 (2)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 TASK 23-31-05-004-018
 4.  Ceiling-Mounted Lavatory Speaker Removal________________________________________
 A. References
 (1)  
AMM 24-22-00/201, Electrical Power - Control

 (2)  
AMM 33-26-00/201, Lavatory Lights - Maintenance Practices

 B. Access
 (1)  Location Zones 211 Control Cabin - Sect 41 (LH side) 231 Passenger Cabin - Sect 43 (LH side) 251 Passenger Cabin - Sect 46 (LH side) 252 Passenger Cabin - Sect 46 (RH side)
 C. Ceiling-Mounted Lavatory Speaker Removal (Fig. 401)
 S 864-019
 (1)  Open this circuit-breaker on the overhead circuit-breaker panel, P11, and attach a DO-NOT-CLOSE tag:
 (a)  11C22, PASS ADRS AMPL
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