23-31-05
 ALL  ú ú 06 Page 404 ú Mar 20/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757 MAINTENANCE MANUAL
 S 014-021
 (2)  
Remove the small circular plug in the ceiling near the passenger address speaker.

 S 034-023

 (3)  
Remove the screw in the hole.

 S 014-024

 (4)  
Lower the lavatory ceiling panel.

 S 914-024

 (5)  
Identify the speaker wires and their locations on the transformer terminals.

 S 034-025

 (6)
Disconnect the speaker wires from the transformer terminals.

 S 034-026

 (7)  
Remove the four screws and washers that hold the speaker to the ceiling panel.

 S 024-027

 (8)
Remove the speaker amd keep the hardware for the installation.

 TASK 23-31-05-404-028
 5.  Ceiling-Mounted Lavatory 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) 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 Installation (Fig. 401)
 S 424-029
 (1) Put the speaker onto the ceiling panel at its usual position.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 23-31-05
 ALL  ú ú 05 Page 405 ú Mar 20/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 S 434-030
 (2)  
Install the four screws and washers that hold the speaker on the ceiling panel.

 S 434-031

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

 S 414-032

 (4)  
Lift the ceiling panel into the closed position.

 S 034-033

 (5)  
Install the screw that attaches the ceiling panel to the ceiling.

 S 414-034

 (6)  
Install the small circular plug in the hole.

 D. Lavatory Speaker Installation Test
 S 864-035
 (1)  
Supply the electrical power (AMM 24-22-00/201).

 S 864-036

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

 (a)  11C22, PASS ADRS AMPL
 S 714-039
 (3)  Speak into an attendant handset.
 (a)  Make sure clear voice comes through the speaker.
 E. Put the Airplane Back to Its Usual Condition
 S 864-041
 (1)  
Put the handset back on the hook.

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

 S 864-042
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 23-31-05
 ALL  ú ú 03 Page 406 ú Mar 20/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
 BOARDING MUSIC TAPE REPRODUCER - MAINTENANCE PRACTICES
______________________________________________________
 1.  General_______
 A.  This procedure has these tasks:
 (1)  
Remove the Tape Reproducer

 (2)  
Install the Boarding Music Tape Reproducer

 (3)  
Test of the Boarding Music Tape Reproducer

 (4)  
Remove the Tape Magazine

 (5)  
Install the Tape Magazine

 B.  The boarding music tape reproducer, M10031, is on shelf E4-4 in the main equipment center.
 TASK 23-31-06-002-001
 2.  Remove the Tape Reproducer__________________________
 A.  References
 (1)  20-10-01/401, E/E Rack-Mounted Components
 B.  Access
 (1)  
　
中國航空網(wǎng) www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：757 AMM 飛機(jī)維護(hù)手冊 COMMUNICATIONS 通訊(52)