DSP PWR-DSP3 manuels

Dsp PWR-DSP3 Manuel d'utilisateur (96 pages)

marque: Dsp | Catégorie: Amplificateurs audio | Taille: 4.80 MB |

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Table des matières

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

DSP appareils