Studer A730 - Service Manual

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Handling MOS Components4
Safety and First Aid5
Contents51
Operating Instructions51
Start-Up Procedure52
Installation52
Insert Compact Disc52
Controls and Indicators53
Connector Panel53
Display53
Plug Wiring54
Line Outputs54
Cinch Sockets54
Remote Control Connections54
Parallel Remote55
Auxiliary55
Operating56
Description of Controls57
Function Selection Keys57
Input Functions57
Memory Keys58
CD Drive Keys58
Auxiliary Functions58
Fast Dial58
Lid59
Headphones Socket Phones59
Loudspeaker59
Varispeed59
Display the Number of Tracks and Playing Time of the Disc60
Play Complete Disc/Play Consecutive Tracks60
Play Single Track60
Enter Random Starting Point Via Keyboard60
Store Cue Points in Cue 1, Cue 2 and Cue 361
Select Stored Cue Point61
Search for Start Point with Cue Wheel61
Correct the Cue Point62
Copy Cue Point/Erase Cue Point62
Select Loop Mode62
Select Sequence Mode62
Additional Modes of Operation63
Line Output Options63
End of Modulation/Change Elapsed Time Display63
Fader Play/Remote Control Operation and Keyboad Activated63
Parallel Controller64
Technical Appendix65
Brief Description, Serial Interface RS23265
Brief Description, Serial Interface SMPTE/EBU Bus66
Digital Output67
Digital Data Flow67
Digital Data Format67
SYNC Preamble67
Coding68
Organization of Data in the "C" Channel68
Data Organisation on the "U" Channel69
Disassembly Instructions71
Tools for Disassembly71
Reassembly71
Front Panel72
Electrical Assemblies Front Panel73
Servo Board73
Keyboard73
Cue Wheel Encoder74
Switch Board74
CD-ROM Drive75
Housing76
Mains Voltage Selector76
Primary Fuses76
Secondary Fuses76
Electrical Assemblies Housing77
Line Amplifier77
Main Board78
Mains Connection Module79
Transformer79
Functional Description A73080
Main Board Description81
Supply Voltage Control Description81
Processor Systems Description82
Digital Signal Processing Description83
Digital Filtering83
Digital/Analogue Conversion84
Level Setting of Variable Outputs and Headphones84
Parallel Remote Control85
Serial Interface85
Modulation Start86
WCLK Generation86
Clock Generation with PLL (for Varispeed) or Quartz86
Servo Board Description87
Laser Current Control87
HF Signal Pre-Amplification88
Signal Processor88
Focus Control88
Radial Control89
Automatic Gain Control89
Disc Motor Control89
Locking of the Compartment Cover89
Keyboard Elements90
Keyboard Scanning90
Cue Wheel90
LED Display90
Alignment Instructions91
Required Measurement Equipment91
Test Points92
Basic Adjustment of the Unit93
Laser Alignment93
Radial Offset Alignment93
Focus Offset Alignment/Drive Motor Alignment93
Measuring the Audio Data94
Output Level and Channel Balance94
Frequency Response/Signal-To-Noise Ratio, Linear/Weighted94
Distortion Factor/Crosstalk94
Hardware Compatibility List95
Testing Different Operations of the Unit95
Testing the Search Facility95
Checking the Sensitivity to Dropouts95
Abbreviations for Components142
Code Letters and Colors142
Resistors/Capacitors142
Molded RF Coils142
Filtler Capacitors for IC Supply on Main Board143
Signal Designations143
Block Diagram and Circuit Diagrams145
Inter-Connection Chart147
Mains-Transformer Diagram149
Main Board - Power Supply Section Diagram151
Main Board - Control Processor Section Diagram152
Main Board - Servo Processor Section Diagram153
Main Board - I/O Section Diagram154
Main Board - Decoder/Modulator Detector Section Diagram155
Main Board - Analogue Section Diagram156
Main Board - Pll/System Clock Section Diagram157
Main Board - RS422, Rs232/Connector Section Diagram158
Main Board - Remote/Impulse/Wclk Section Diagram159
Main Board Diagram160
Main Board Parts List161
Servo Board Diagram163
Keyboard Diagram165
Keyboard Parts List167
Line Amplifier with Transformer Diagram168
Line Amplifier - Transformerless, Diagram170
Cinch Board Diagram172
Switch Board Diagram174
Parallel Remote - Remote Board Diagram176
Parallel Controller - Controller Board Diagram178
Parallel Controller - Keyboard Diagram180
Spare Parts183
Exploded View184
Technical Data188
Dimensions189

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Studer A730 Specifications

General

Brand	Studer
Model	A730
Category	CD Player
Language	English

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Studer A730 - Service Manual

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Studer A730 Specifications

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