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CHAPTER 4
Audio Amplifier System
The audio amplifier boosts the all audio from the main circuit board and drives the speakers.
The level adjustment adjusts the volume for any audio projected from the speakers. There are
individual volumes for the voice, mp3 player, and siren. Set the Filter to middle because this
gives you the best mid-range sound. If your sound is bassy or too high pitched, check this
switch position. Set the level at about 2:00. If this is too high you will get some distortion.
Problem/Cause
Action
Siren
No audio
1. Audio fuse blown
2. Speaker wires are disconnected
1. Replace fuse. See fuse block diagram.
2. Re-connect speaker wires.
One speaker not working
1. One channel of booster bad.
2. Speaker wire broken or disconnected.
3. Speaker bad.
1. Replace booster.
2. Connect or replace wire.
3. Replace speaker.
Audio Sounds muffled and low
1. Filter is in low position.
1. Switch to off position.
Level Adjustment
Master Volume
Filter- Lo/Hi
Set Filter to Off
Speakers
Power 12V
Audio In - Left/Right
Summary of Contents for Vehicle Robot
Page 53: ...49 APPENDIX A ...
Page 57: ...53 Robot Block Diagram ...
Page 58: ...54 APPENDIX B ROBOT PARTS IDENTIFICATION ...
Page 77: ...73 APPENDIX C CHECKLIST AND MAINTENANCE FORMS ...
Page 79: ...75 ...
Page 80: ...76 Notes ...
Page 81: ...77 Technical Tips ...