Studer A721 Manuals

Manuals and User Guides for Studer A721. We have 1 Studer A721 manual available for free PDF download: Operating And Service Instructions

Studer A721 Operating And Service Instructions (138 pages)

PROFESSIONL TAPE RECORDER

Brand: Studer | Category: Tape Deck | Size: 51 MB

Safety
4
First Aid
4
Contents
46
General
47
Operating Controls
47
Connector Panel
47
Pin Assignment
48
Serial Link
48
Line Input/Output
48
Start-Up Procedure
49
Reproduce Functions
49
Inserting the Cassette
49
Tape Type [18]
49
Output Level
50
Stop
50
Fast Forwarding
50
Rewind
50
Record Functions
51
MPX Filter
51
Peak Program Indicator
51
Record REC
51
Special Functions
52
Real-Time Counter
53
Adjustment of Real-Time Indication
53
Automatic Calibration
54
Align
54
Calibration Error
54
Calibration
54
Technical Appendix
55
Parallel Remote Control Socket
55
Fader Start
56
Timer Operation
56
Care and Maintenance of the Cassette Tape Deck
56
Disassembly Instructions
57
General Information
57
Required Tools
57
Reassembly
57
Housing
58
Top Cover
58
Bottom Cover
58
Rack Bracket
58
Operating Panel
59
LC Display
60
Replacing the Display Illumination
60
Keyboard Pcb/Switching Mats/Keys
61
Headphones Socket
61
Potentiometers
61
Tape Deck
62
Replacing the Tape Deck
62
Electrical Modules
63
Transformer 1.721.215
63
Capstan Motor Control 1.721.260
63
Remote Interface 1.721.315
63
System Control A721 1.721.225
64
NR System 1.721.290
64
Record Control A721 1.721.305
64
Balanced IN/OUT A721 1.721.285
64
Primary Fuse
65
Secondary Fuses
65
Functional Description
66
Wiring Diagram
67
Tape Deck 1.721.121
68
Supply Voltage Regulation
69
Microprocessor System
70
Spooling Motor Control
70
Control of the Audio Functions
70
Remote Interface A721 1.721.315
72
Parallel Remote Control
72
Luminescence Driver
72
Balance In/Out A721 1.721.285
73
Level Adjustment, Headphones Amplifier
74
Peak/Mean Value Rectification
74
Reproduce Amplifier
74
Alignment Instructions
78
Required Special Tools
78
Required Measuring Instruments
78
Mechanical Adjustments
79
Adjusting the Pinch Rollers
79
Checking the Pinch Roller Arms
79
Checking the Centering Pin Position
79
Adjusting the Pivoting Carrier
80
Adjusting the Pinch Roller Solenoid
81
Aligning the Record/Reproduce Head
81
Adjusting the Erase Head Position
82
Checking the Tape Transport
82
Electrical Alignments
83
Adjusting the Tape End Sensor
83
Aligning the Tacho Signals
83
Adjusting the Line Level
83
Aligning the MPX Filter
84
Adjusting the Azimuth of the Soundhead
84
Reproduct Level and Frequency Response
84
Aligning the Oscillator Frequency
85
Basic Record Equalizer/Treble Setting
85
Measuring the Audio Data
86
Distortion
86
Signal-To-Noise Ratio with Tape
86
Erase Efficiency
86
Spare Parts
87
Audio Block Diagram
89
Microcomputer Interconnection
90
Wiring Diagram A721
91
Mains Transformer 1.721.215.30
93
Distributor Primary A721 1.721.216.00
94
Distributor Secondary A721 1.721.214.00
95
System Control A721
96
System Control A721 1.721.525.21
101
Capstan Motor Control 1.721.260.81
102
Capstan Motor Control 1.721.260.8
103
Capstan Motor Driver 1.021.516.81
104
Tape Transport 1.721.121.00
106
Locking Unit 1.721.150.81
107
Balanced In/Out A721 1.721.285.00
108
NR-System 1.721.290.00
112
Record Control 1.721.305.81
114
Record Control A721 1.721.305.81
115
Remote Interface 1.721.315.00
117
Display Board 1.721.255.81
119
Luminiscent Lamp A721 1.721.256.00
121
Luminiscent Lamp A721 1.721.256.81
122
Keyboard Left A721 1.121.235.00
123
Keyboard Right A721 1.721.245.00
123
Keyboard Left A721 1.721.235.00
124
Mechanical Part
128
Cassette Tape Transport
130
Technical Data
136
Dimensions
137

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Studer A721 Operating And Service Instructions (138 pages)

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