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Manuals
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Studer Manuals
Tape Deck
A721
Operating and service instructions
Studer A721 Operating And Service Instructions
Professionl tape recorder
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Table Of Contents
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Contents
Table of Contents
Bookmarks
Table of Contents
Safety
First Aid
Contents
General
Operating Controls
Connector Panel
Pin Assignment
Serial Link
Line Input/Output
Start-Up Procedure
Reproduce Functions
Inserting the Cassette
Tape Type [18]
Output Level
Stop
Fast Forwarding
Rewind
Record Functions
MPX Filter
Peak Program Indicator
Record REC
Special Functions
Real-Time Counter
Adjustment of Real-Time Indication
Automatic Calibration
Align
Calibration Error
Calibration
Technical Appendix
Parallel Remote Control Socket
Fader Start
Timer Operation
Care and Maintenance of the Cassette Tape Deck
Disassembly Instructions
General Information
Required Tools
Reassembly
Housing
Top Cover
Bottom Cover
Rack Bracket
Operating Panel
LC Display
Replacing the Display Illumination
Keyboard Pcb/Switching Mats/Keys
Headphones Socket
Potentiometers
Tape Deck
Replacing the Tape Deck
Electrical Modules
Transformer 1.721.215
Capstan Motor Control 1.721.260
Remote Interface 1.721.315
System Control A721 1.721.225
NR System 1.721.290
Record Control A721 1.721.305
Balanced IN/OUT A721 1.721.285
Primary Fuse
Secondary Fuses
Functional Description
Wiring Diagram
Tape Deck 1.721.121
Supply Voltage Regulation
Microprocessor System
Spooling Motor Control
Control of the Audio Functions
Remote Interface A721 1.721.315
Parallel Remote Control
Luminescence Driver
Balance In/Out A721 1.721.285
Level Adjustment, Headphones Amplifier
Peak/Mean Value Rectification
Reproduce Amplifier
Alignment Instructions
Required Special Tools
Required Measuring Instruments
Mechanical Adjustments
Adjusting the Pinch Rollers
Checking the Pinch Roller Arms
Checking the Centering Pin Position
Adjusting the Pivoting Carrier
Adjusting the Pinch Roller Solenoid
Aligning the Record/Reproduce Head
Adjusting the Erase Head Position
Checking the Tape Transport
Electrical Alignments
Adjusting the Tape End Sensor
Aligning the Tacho Signals
Adjusting the Line Level
Aligning the MPX Filter
Adjusting the Azimuth of the Soundhead
Reproduct Level and Frequency Response
Aligning the Oscillator Frequency
Basic Record Equalizer/Treble Setting
Measuring the Audio Data
Distortion
Signal-To-Noise Ratio with Tape
Erase Efficiency
Spare Parts
Audio Block Diagram
Microcomputer Interconnection
Wiring Diagram A721
Mains Transformer 1.721.215.30
Distributor Primary A721 1.721.216.00
Distributor Secondary A721 1.721.214.00
System Control A721
System Control A721 1.721.525.21
Capstan Motor Control 1.721.260.81
Capstan Motor Control 1.721.260.8
Capstan Motor Driver 1.021.516.81
Tape Transport 1.721.121.00
Locking Unit 1.721.150.81
Balanced In/Out A721 1.721.285.00
NR-System 1.721.290.00
Record Control 1.721.305.81
Record Control A721 1.721.305.81
Remote Interface 1.721.315.00
Display Board 1.721.255.81
Luminiscent Lamp A721 1.721.256.00
Luminiscent Lamp A721 1.721.256.81
Keyboard Left A721 1.121.235.00
Keyboard Right A721 1.721.245.00
Keyboard Left A721 1.721.235.00
Mechanical Part
Cassette Tape Transport
Technical Data
Dimensions
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