DSP PWR-DSP3 manuály

Dsp PWR-DSP3 Uživatelský manuál (96 strany)

Značka: Dsp | Kategorie: Audio zesilovače | Velikost: 4.80 MB |

Angličtina

Tabulka s obsahem

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

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DSP boards removed

13

Digital Signal Processing

14

DSP assemblies

15

DSP ASSY

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DSP3 ASSY

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DAC10 ASSY

18

No illumination, no audio!

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Indicators must illuminate

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For your reference only

20

DSP Audio Block Diagram

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DSP Audio Circuit

22

DSP Audio Circuit…continued

23

IC112 DIR & DIT

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Pin 3 In

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More noise than signal

29

Pin 3 DIR & DIT In

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Test point DIR&DIT Pin 25

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Pin 3 Selector In

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Test point IC112 Pin 3

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Pin 4 Out

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Test Point

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Test point DSP1 IC301 Pin 6

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Test point DSP1 IC301 Pin 12

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Test point DSP2 IC401 Pin 11

40

Question…

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Answer

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DSP2 IC401 Pin 5 Out

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DSP3 IC501 Pin 6 In

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DSP3 IC501 Pin 12 Out

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DAC10 CN6002 Pin 11 In

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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

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Unit shuts off…

60

Can there be other causes?

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How to check for DC Offset

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How do I know which of

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DC Offset

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Possibly shorted!

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Last place to look!

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Amplifier Failures

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System Microprocessor

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Standby Voltage On/Off

72

Expander IC

73

RAC1 & RAC2

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To turn on AC Relays

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Tip…Look for change of state

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Data and control lines

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Mute…Main and Multi-Room

75

Display Microprocessor

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Turn on procedure

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Communication between Micros

78

Volume up and down

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Volume down

80

Changing inputs

81

Things to keep

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To aid in Troubleshooting

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Normal Condition

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Note to current draw…

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Power supply voltages

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One brief note on ESD

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5S ESD Training

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Additional resources for

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ESD information…

94

Thank you

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DSP zařízení