DSP PWR-DSP3 Instrukcja Użytkownika Strona 74
- Strona / 96
- Spis treści
- ROZWIĄZYWANIE PROBLEMÓW
- BOOKMARKI
- Introduction 3
- This seminar manual will be 4
- Topics we will cover 6
- Disassembly 7
- To start… 8
- There are 3 different types ! 10
- Correct place for screw with 11
- DSP boards removed 13
- Digital Signal Processing 14
- DSP assemblies 15
- DSP ASSY 16
- DSP3 ASSY 17
- DAC10 ASSY 18
- No illumination, no audio! 19
- Indicators must illuminate 19
- For your reference only 20
- DSP Audio Block Diagram 21
- DSP Audio Circuit 22
- DSP Audio Circuit…continued 23
- IC112 DIR & DIT 28
- Pin 3 In 28
- More noise than signal 29
- Pin 3 DIR & DIT In 29
- Test point DIR&DIT Pin 25 30
- Pin 3 Selector In 32
- Test point IC112 Pin 3 33
- Pin 4 Out 34
- Test Point 35
- Test point DSP1 IC301 Pin 6 36
- Test point DSP1 IC301 Pin 12 38
- Test point DSP2 IC401 Pin 11 40
- Question… 41
- Answer 41
- DSP2 IC401 Pin 5 Out 43
- DSP3 IC501 Pin 6 In 45
- DSP3 IC501 Pin 12 Out 47
- DAC10 CN6002 Pin 11 In 49
- DAC10 CN6004 Pin 10 Out 50
- DSP Audio Flow Path 53
- Continued DSP Path 54
- DSP Socket Issues 55
- DSP troubleshooting tips 56
- Amplifier 58
- Protection Circuit 58
- Unit shuts off… 60
- Can there be other causes? 61
- How to check for DC Offset 62
- How do I know which of 63
- DC Offset 64
- Possibly shorted! 65
- Last place to look! 66
- Amplifier Failures 68
- System Microprocessor 71
- Standby Voltage On/Off 72
- Expander IC 73
- RAC1 & RAC2 74
- To turn on AC Relays 74
- Tip…Look for change of state 74
- Data and control lines 74
- Mute…Main and Multi-Room 75
- Display Microprocessor 76
- Turn on procedure 77
- Communication between Micros 78
- Volume up and down 79
- Volume down 80
- Changing inputs 81
- Things to keep 83
- To aid in Troubleshooting 84
- Normal Condition 85
- Note to current draw… 86
- Power supply voltages 88
- One brief note on ESD 93
- 5S ESD Training 93
- Additional resources for 94
- ESD information… 94
- Thank you 95
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