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General| Brand | Aiwa |
|---|---|
| Model | HS-J7 |
| Category | Cassette Player |
| Language | English |
Ensure specification plates and labels remain legible and undamaged during repair.
Securely glue added parts to circuit boards to maintain integrity.
Maintain original solder states, wire routing, and insulation conditions.
Clean heads, capstans, and pinch rollers; handle lubricants carefully; replace E-rings.
Details power sources, battery life, physical dimensions, and unit weight.
Lists technical specifications for radio reception and tape playback/recording.
Covers headphone specifications and important system notes like Dolby.
Visual breakdown of the unit into major assemblies.
Step-by-step guide for correctly stringing the dial cord.
Lists ICs, resistors, capacitors, coils, and filters for the main board.
Details switches, LEDs, motor components, and miscellaneous parts.
Guides for adjusting IF, tracking, and frequency range settings.
Procedures for Dolby level calibration and leaf switch adjustment.
Explanations of symbols used in diagrams and important notes.
Diagram showing component placement and routing on the main circuit board.
Highlights key adjustment points and defines schematic symbols.
Detailed wiring and voltage measurements for the main circuit board.
Wiring diagrams for associated circuit boards and controls.
Steps for calibrating tape speed using a test tape.
Visual reference of the main PCB trace layout.
Instructions for removing the bottom plate assembly.
Guide for correctly installing the bottom plate assembly.
Steps for assembling mechanism parts while engaging the play button.
Details the component interaction during forward play.
Explains the gear and lever movement during forward playback.
Details the component interaction during reverse play.
Explains the mechanism's path during manual reverse.
Details the mechanism's path during automatic reverse.
Ensures correct part positioning for continuous or auto-return reverse.
Explains the component sequence during auto-stop.
Describes tape end behavior in record mode, leading to reverse play.
Details the gear and lever movements during fast forward.
Details the component sequence during rewind operation.
Illustrates the correct placement of various springs within the mechanism.
Step-by-step instructions for removing the rear cabinet.
Instructions for removing the cassette lid.
Steps for disconnecting and removing the main PCB.
Instructions for removing the operation panel and dial drum.
Diagram showing the main chassis and its primary mechanical components.
Lists various cassette box assemblies and cabinet parts.
Details push-buttons, knobs, tuning pointers, and control panels.
Lists rear cabinet parts and battery terminal components.
Diagram illustrating the arrangement of mechanism components.
Lists chassis, levers, and various spring types for the mechanism.
Details pinch levers, springs, and tape guide components.
Illustrates the motor and associated gear train components.
Lists motor parts, gears, selectors, and springs.
Details reel assemblies, arm components, and timing parts.
Lists included instruction manuals and microphones.
Details carrying cases and wire antennas.
Lists shoulder belts and belt hanger accessories.
