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Overview of the Nakamichi 480Z's operational controls and their locations on the front and rear panels.
Information about the voltage selector switch on the rear panel for different power supply options.
Step-by-step guide to remove the cassette case cover assembly, including specific part references.
Detailed steps to remove the front panel assembly, including knobs and associated components.
Guide to removing the main mechanism assembly, including connectors and linkages.
Instructions for removing the main printed circuit board assembly, including connectors and wiring.
Steps to remove rear panel, transformer, and power switch components.
Steps to remove capstan motor and flywheel assemblies.
Procedure for removing the record/playback head assembly.
Adjusting the mechanism control cam for correct stop and play positions using VR602 and VR603.
Procedure to adjust tape speed using the capstan motor volume (VR501) to achieve 3,000 Hz.
Adjusting the record/playback head tilt using a tilt check gauge for proper channel illumination.
Aligning the record/playback head stroke using a stroke check gauge and adjuster.
Adjusting tape guide heights and erase head stroke using check gauges.
Adjusting erase head height and tilt using a tilt check gauge for optimal beacon illumination.
Adjusting back tension using a tension arm cassette and gauge to achieve specific torque values.
Adjusting head height and azimuth for minimum channel output and maximum performance.
Ensuring proper tape travel without waving or slippage, referencing other adjustments if needed.
Adjusting the record switch linkage for proper gap and operation.
Tightening thrust screws for flywheel holder assemblies to minimize gaps without damage.
Adjusting the eject wire for proper operation by loosening and tightening screws.
Specific lubricants recommended for replacing parts like capstan shaft and reel hub shaft.
General instructions and notes for performing electrical adjustments after mechanical ones are complete.
Adjusting playback equalization curves for middle and high frequencies by modifying resistors.
Procedures to check the Dolby NR circuit's B-Type and C-Type performance for both playback and record modes.
Mounting diagram and parts list for the main printed circuit board assembly.
Mounting diagram and parts list for the volume printed circuit board assembly.
Mounting diagram and parts list for the headphone switch printed circuit board assembly.
Mounting diagram and parts list for the switch printed circuit board assembly.
Mounting diagram and parts list for the logic printed circuit board assembly.
Exploded view and parts list for the synthesis assembly.
Exploded view and parts list for the front panel assembly.
Exploded view and parts list for the synthesis mechanism assembly.
Exploded view and parts list for the headphone jack assembly.
Exploded view and parts list for the main mechanism assembly.
Exploded view and parts list for the main mechanism chassis assembly.
Exploded view and parts list for the head mount base assembly.
Exploded view and parts list for the RP-9E record/playback head assembly.
Graph showing playback frequency response curves for different tape equalization settings (70µs, 120µs).
Graph illustrating record current frequency response curves for different tape equalization settings.
Block diagram of the amplifier section, showing signal flow from input to output.
Block diagram illustrating the mechanism control section, detailing motor drivers and sensors.
Block diagrams for the Dolby NR IC (µA7300PC) and Operational Amplifier (IC 4558).
Important notes for servicemen regarding parts replacement and insulation checks before returning the unit.
Schematic diagram of the mechanism control section, showing interconnections between PCBs and components.
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General