Table Of Contents; Contents - Bose FreeSpace Business E4 II Series Service Manual

CONTENTS

Contents .............................................................................................................................................2
Safety Information .............................................................................................................................3
Warranty .............................................................................................................................................3
Product Description ..........................................................................................................................4
Specifications .............................................................................................................................. 5-10
Electrostatic Discharge Sensitive (ESDS) Device Handling ....................................................... 11
Part List Notes ................................................................................................................................. 11
Amplifier Module Repair Information ............................................................................................ 11
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Packaging Part List, FreeSpace E4 Series II Business Music System (see Figure 1) ............12
Figure 1. FreeSpace E4 Series II System Packaging View ..............................................................12
Accessory Kit Part List (not shown) .............................................................................................12
Main Part List, FreeSpace E4 Series II Business Music System (see Figure 2) ........................13
Figure 2. FreeSpace E4 Series II Business Music System Exploded View ......................................14
Main Part List, E4 Series II Power Supply / Power Amplifier PCB Module (see Figure 3) .......15
Figure 3. E4 Series II Power Supply / Power Amplifier PCB Module ................................................15
Electrical Part Lists ................................................................................................................... 16-72
Digital Signal Processor / User Interface PCB Assembly ..................................................... 16-36
E4 Series II Power Supply / Power Amplifier PCB Assembly ............................................... 37-51
FreeSpace 4400 Power Supply / Power Amplifier PCB Assembly ........................................ 52-69
FreeSpace 4400 Power Amplifier Driver PCB Assembly ....................................................... 70-72
Disassembly Procedures ......................................................................................................... 73-74
Figure 4. E4 II Amplifier Module Assembly .......................................................................................74
Test Procedure Setup ............................................................................................................... 75-76
Test Procedures ........................................................................................................................ 77-80
Troubleshooting ........................................................................................................................ 81-89
Theory of Operation .................................................................................................................. 90-97
Accessories .....................................................................................................................................98
Figure 5. Flash Memory PCB Component Layout ............................................................................99
Figure 6. DSP PCB Assembly Component Layout ...........................................................................99
Figure 7. Wallplate Sense PCB Assembly Component Layout .......................................................100
Figure 8. Mic Sense PCB Assembly Component Layout ................................................................ 100
Figure 9. Front Panel Display PCB Assembly Component Layout .................................................100
Figure 10. E4 Series II Upper and Lower Amplifier PCB Assembly Component Layout ................101
Figure 11. FS 4400 Upper Amplifier PCB Top Etch and Component Layout .................................. 102
Figure 12. FS 4400 Upper Amplifier PCB Bottom Etch and Component Layout ............................103
Figure 13. FS 4400 Lower Amplifier PCB Top Etch and Component Layout ..................................104
Figure 14. FS 4400 Lower Amplifier PCB Bottom Etch and Component Layout ............................105
Service Bulletin ..................................................................................................................... 106-107
Service Manual Revision History .................................................................................................108
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