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Details on AC power input and power consumption of the unit.
Information on the recording system type and standard tape speed.
Specifications for wow & flutter and tape speed performance.
Frequency response for different tape types (Fe2O3, FeCr/CrO2).
Noise level measurements for different tape types, with and without Dolby.
Specifications for erase ratio, crosstalk, and harmonic distortion.
Output levels, impedance, dimensions, and oscillation frequency.
Step-by-step guide to remove the unit's outer cover.
Instructions for removing the front panel sheet.
Detailed steps for detaching the front panel assembly.
Procedure for removing the main mechanism chassis.
Steps to remove the amplifier printed circuit board.
Process for detaching the panel chassis assembly.
Procedure to remove the power supply printed circuit board.
List of tools and materials needed for mechanical adjustments.
Important notes and precautions before performing adjustments.
Steps to adjust pinch roller pressure and clearance.
Method for adjusting flywheel thrust clearance.
Procedure to set the correct take-up torque.
Steps to adjust the motor switch clearance.
Measurement and adjustment of FF/REW torque.
Procedure for adjusting the muting switch contacts.
Description of how the auto shut-off mechanism operates.
Common symptoms, causes, and remedies for auto shut-off issues.
Tools and test tapes needed for electrical calibration.
Procedure to align the playback/record heads for optimal sound.
Steps to calibrate the tape playback speed.
Setting the correct output level for playback.
Calibrating the VU meters for accurate readings.
Adjusting frequency response for Chromium Dioxide tape.
Steps for calibrating normal tape recording and playback.
Procedure for CrO2 tape recording and playback adjustments.
Adjusting recording and playback for ferrichrome tape.
Specific adjustments for the right channel with ferrichrome tape.
Important safety recommendations for component replacement.
List of packaging materials and included accessories.
Part numbers for cabinet and chassis components.
Component list for the power supply printed circuit board.
List of components on the amplifier printed circuit board.
Continued listing of components for the amplifier printed circuit board.
Parts for amplifier and other circuit boards.
Additional components for the amplifier printed circuit board.
Component list for the Dolby NR unit printed circuit board.
Parts for the lamp circuit board and mechanism components.
Comprehensive list of mechanism parts and their quantities.
Details on screws, washers, and important ordering notes.
Electrical schematic diagram of the Dolby NR unit.
Top and bottom views of the Dolby NR unit's printed circuit board.
Diagram showing signal flow through pre-amplifiers, Dolby NR, and amplifiers.
Blocks for OSC, Motor, Power Supply, and Regulator.
Wiring for microphone, line inputs, outputs, and headphone jack.
Wiring for power supply, motor, switches, and PCB connections.
General
