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Technical details of the CD player system, laser diode, and physical characteristics.
Specifications for audio output, frequency response, distortion, and channel separation.
Procedure for performing an AC leakage test using specific equipment.
Crucial warning about avoiding direct eye exposure to the laser beam.
Information on warning labels and technical properties of the laser diode.
Specific precautions for servicing the optical pick-up block and its circuits.
Guidelines for safely handling the optical pick-up block to prevent ESD damage.
Procedures for grounding the human body and work table to prevent static electricity damage.
Procedures for safely checking laser diode emission and focus search operation.
A flowchart to guide the diagnosis and troubleshooting of the BU-1 base unit.
Explanation of buttons, indicators, and display elements on the front panel.
Lists pin functions and describes command signals for the master control IC.
Details IC303 pin functions and the procedure for direct search operation.
Block diagrams for the optical pick-up and servo circuitry.
Procedures for adjusting the disc table point and chucking arm height.
Steps for performing the CLV phase lock check.
Detailed procedure for adjusting focus and tracking gain.
Schematic diagrams for the power supply section of different models.
Exploded view diagram with a parts list for unit assembly.
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