Telex AIRMAN 8+ - Table of Contents

AIRMAN 8+ Table of contents | en 3
Bosch Security Systems, LLC
Customer Maintenance Manual
2024-11 | 07 | F.01U.387.060
Table of contents
1
Record of revisions 4
2
Purpose of manual 5
2.1 Technical support 5
2.2 Parts ordering 5
2.3 Repairs 5
2.4 Safety precautions 5
3
Introduction 7
3.1 FAA 9
4
Parts list and exploded view 10
4.1 Exploded view 10
4.2 Parts list 10
5
Maintenance 15
5.1 Recommended maintenance schedule 15
5.2 Basic inspection 16
5.2.1 Physical inspection 16
5.2.2 Talk test 17
5.3 Microphone troubleshooting 17
5.3.1 Validate continuity from plug to Boom side PCBA 17
5.3.2 Validate mic circuitry 18
5.3.3 Microphone/amplifier sensitivity test 18
5.3.4 Microphone sensitivity adjustment 18
5.3.5 Microphone total harmonic distortion (THD) test 19
5.4 Speaker troubleshooting 19
5.4.1 Speaker sensitivity and frequency response verification 20
5.4.2 Validate continuity from plug to boom-side PCBA 20
5.4.3 Validate the PCBA 20
5.5 ANR troubleshooting 21
5.5.1 Measuring ANR circuit voltages and switch function 21
5.6 Cleaning the headset and connectors 23
5.7 Cleaning the ear cushions and headband pads 23
5.8 Replacing ear cushions and headband pads 23
5.9 Installing and replacing the hygenic covers 23
5.10 Replacing the windscreen 24
5.11 Headset storage 24
6
Disassembly 25
6.1 Ear cushion replacement 25
6.2 Headband pad and headband pad replacement 26
6.3 Remove the mic prefilter 29
6.4 Remove the yoke assembly from the headband assembly 29
6.5 Boom side disassembly 29
6.6 Non-boom side disassembly 31
7
Assembly 33
7.1 Boom side assembly 33
7.2 Non-boom side assembly 37
7.3 Attach the prefilter 40
7.4 Replace the yoke assembly on the headband assembly 40
7.5 Reinstall the headband cover 41
8
Wiring Diagrams and Connectors 42