23-CONTENTS
BEJ Page 5 Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL CHAPTER 23 - COMMUNICATIONS TABLE OF CONTENTS
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Chapter
Section
Subject_______ Subject_______ Page____ Effectivity___________
UNIT - AUDIO ACCESSORY 23-51-12
Removal/Installation 401 [*]
[*] AIRPLANES WITHOUT DIGITAL AUDIO CONTROL SYSTEM
UNIT - REMOTE ELECTRONICS 23-51-11 Removal/Installation 401 [*] General 401 [*] AIRPLANES WITH DIGITAL AUDIO CONTROL SYSTEM
STATIC DISCHARGING__________________ 23-60-00
STATIC DISCHARGER 23-61-00
Description and Operation 1 ALL
General 1
Removal/Installation 401 ALL
General 401
Base Installation - Static 403
Discharger
Rod and Base Removal - Static 401
Discharger
Rod Installation - Static 407
Discharger
Inspection/Check 601 ALL
General 601
Inspection - Static Discharger 601
Resistance Measurement - 603
Static Discharger
AUDIO AND VIDEO MONITORING__________________________ 23-70-00
VOICE RECORDER SYSTEM 23-71-00
Description and Operation 1 ALL
General 1
Panel - Voice Recorder Control 3
Unit - Voice Recorder 4
Operation 5
Trouble Shooting 101 ALL
Adjustment/Test 501 ALL
Operational Test 501
System Test 502
PANEL - VOICE RECORDER CONTROL 23-71-12
Removal/Installation 401 ALL
23-CONTENTS
BEJ Page 6 Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
CHAPTER 23 - COMMUNICATIONS
TABLE OF CONTENTS
_________________
Chapter Section Subject_______ Subject ____ Effectivity
_______ Page ___________
UNDERWATER LOCATOR BEACON 23-71-21
Maintenance Practices 201 ALL General 201 Installation - Underwater 213
Locator Beacon Removal - Underwater Locator 201 Beacon Replacement - Underwater 201 DUKANE Locator Beacon Battery Replacement - Underwater 208 DATASONICS Locator Beacon Battery Test - Underwater Locator 210 Beacon UNIT - VOICE RECORDER 23-71-11 Removal/Installation 401 ALL
23-CONTENTS
BEJ Page 7 Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
1.
2.
3.
A
737-300/400/500MAINTENANCE MANUAL
COMMUNICATIONS - DESCRIPTION AND OPERATION
__________________________________________
General
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A. The 737-300/-400/-500 airplane has systems for transmitting and receiving voice communications with ground stations or other airplanes. Systems are also provided for communication within the airplane.
Communications Systems (Fig. 1)
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A. Two HF radio systems (23-11) provide long range voice communications.
B. Two VHF communications systems (23-21) provide short range voice communication. The systems are designated No. 1 and No. 2.
C. A SELCAL system (23-28) is installed on the airplane. The system provides aural/visual notification to the flight crew that someone desires contact with them on one of the VHF systems which makes continuous monitoring of radio frequencies unnecessary.
D. The PA (passenger address) system (23-31) provides the pilots and attendants with a way to send announcements and boarding music to passengers over cabin speakers. The system is also used to give chime signals over the cabin speakers.
E. The service interphone system (23-41) provides the ground crew with interior and exterior communication capability. Circuits in the system connect service interphone jacks with the flight deck and attendant's stations.
F. The ground crew call system (23-43) provides a signaling capability (through the ground crew call horn) between the flight compartment and nose landing gear area.
G. The flight interphone system (23-51) provides facilities for interphone communication among flight compartment crewmembers, and provides the means for them to key, transmit, and receive on airplane radio systems and receive on navigation channels.
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