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General| Brand | Sony |
|---|---|
| Model | WM-DD |
| Category | Cassette Player |
| Language | English |
Details power sources, including AC adaptors for various countries.
Covers tape format, winding time, frequency response, wow/flutter, and output.
Illustrates and labels key external components of the player.
Highlights major functional capabilities like tape selection and DD system.
Provides dimensions and visual identification for resistors, capacitors, transistors, and diodes.
Lists essential safety and handling guidelines for component replacement.
Details the methods for removing and connecting chip components.
Illustrates the overall system architecture and signal paths.
Shows the DC IN and battery power supply connections.
Explains the mechanical steps for forward playback.
Describes the mechanism for automatic shut-off during forward playback.
Details the mechanical sequence for fast forward playback.
Explains the mechanical steps for rewind operation.
Guides motor installation, alignment, and thrust play adjustment.
Details the procedure for adjusting playback head height for optimal performance.
Explains how to align the playback head for optimal stereo separation.
Describes how to check and adjust signal phase using an oscilloscope.
Shows the physical locations of adjustment screws on the unit.
Details steps for removing the cassette panel and holder.
Explains how to access the control panel and audio board.
Guides on how to access the mechanism section for inspection.
Provides specifications and methods for measuring component torque.
Details the procedure for adjusting pinch roller pressure.
Guides on adjusting tape speed using a speed checker or frequency counter.
Details how to adjust audio channel levels for balance.
Explains the procedure for adjusting the muting circuit level.
Describes how to adjust wow and flutter using an oscilloscope.
Shows the pinout and lead configurations for various semiconductors.
Provides a detailed exploded diagram of the player's mechanism.
Shows an exploded view of the main chassis and associated parts.
Presents the detailed circuit schematic for the main board.
Provides general notes on components and DC voltage readings.
Lists parts for panels, buttons, knobs, and springs.
Details screws, springs, cushions, and meter covers.
Lists accessories like carrying cases, cartons, and cushions.
Includes product labels, manuals, demonstration tapes, and protection sheets.
Lists levers, gears, plates, and springs for mechanical functions.
Details motor brackets, plates, rubbers, retainers, and springs.
Lists various precision screws, washers, and specific component assemblies.
Lists capacitors (ceramic, electrolytic) and resistors (carbon chip).
Details transistors, diodes, ICs, jacks, and switches.
Lists remaining resistors, variable resistors, and switches.
Defines common screw types, dimensions, and head styles.
Defines different types of washers and retaining rings.
Lists electrolytic and ceramic capacitors with their ratings and part numbers.
Lists Mylar and Tantalum capacitors with their voltage ratings and part numbers.
Lists levers, gears, plates, and springs for shut-off and driving mechanisms.
Details motor plates, retainers, springs, and tension components.
Lists various screws, washers, springs, and specific component assemblies.
Lists remaining resistors, including carbon chip types with specific values.
Details variable resistors, switches, and motors with their part numbers.
Lists remaining carbon chip resistors with their specifications.
Details variable resistors, switches, and motors with their part numbers.
Defines common screw types, dimensions, and head styles.
Defines different types of washers and retaining rings.
Lists electrolytic and ceramic capacitors with their voltage ratings and part numbers.
Lists Mylar and Tantalum capacitors with their voltage ratings and part numbers.
