Table Of Contents - SPHINX Project Eighteen Service Manual

SPHINX Project Eighteen Service Manual
1. UNPACKING .......................................................................................................................................3
2. SPHINX WARRANTY CARD ..............................................................................................................3
3. CONTACTING THE MANUFACTURER .............................................................................................3
4. THE POWER AMP AT A GLANCE.....................................................................................................4
Front panel................................................................................................................................................... 4
Rear panel ................................................................................................................................................... 5
5. TECHNICAL SPECIFICATIONS .........................................................................................................6
6. GENERAL CHECKLIST......................................................................................................................7
Optical connections ..................................................................................................................................... 7
Switching the amp on................................................................................................................................... 7
Protection mode........................................................................................................................................... 7
Shorted output ............................................................................................................................................. 7
Cables.......................................................................................................................................................... 7
7. ADJUSTMENT PROCEDURES..........................................................................................................8
High Bias ..................................................................................................................................................... 8
Low Bias ...................................................................................................................................................... 9
Offset ........................................................................................................................................................... 9
Common Mode .......................................................................................................................................... 10
8. PROBLEMS AND SOLUTIONS........................................................................................................11
9. DIAGRAMS AND PARTS LISTS ......................................................................................................12
Connecting diagram for testing the project 18 ........................................................................................... 13
Connection diagram for common mode adjustment .................................................................................. 14
Schematic layout of all relevant parts ........................................................................................................ 15
Schematic overview of the Project 18 mainboard...................................................................................... 16
Project 18 logic .......................................................................................................................................... 17
Project 18 supply & relay control schematic .............................................................................................. 18
Project 18 blockdiagram left ...................................................................................................................... 19
Project 18 blockdiagram right .................................................................................................................... 20
Project 18 amplifier diagram left ................................................................................................................ 21
Project 18 amplifier diagram right .............................................................................................................. 22
Project 18 power supply left....................................................................................................................... 23
Project 18 power supply right..................................................................................................................... 24
PCB drawings of Project 18 ....................................................................................................................... 25
Partlist........................................................................................................................................................ 26
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