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).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
23-31-05
ALL ú ú 02 Page 401 ú Sep 20/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
Lavatory PA Speaker Installation
Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
23-31-05
ALL ú ú 01 Page 402 ú Dec 15/82
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
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
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
23-31-05
ALL ú ú 01 Page 403 ú May 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
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
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 COMMUNICATIONS 通讯(51)
