Sony TCS-350 Service Manual

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Sony TCS-350 Specifications

General

Brand	Sony
Model	TCS-350
Recording Media	Compact Cassette
Microphone	Built-in Electret Condenser Microphone
Power Supply	2 x AA batteries or DC 3V
Wow and Flutter	0.25% WRMS
Speaker	Built-in monaural speaker

Summary

Specifications

Section 1: Outline

Parts Identification

Identifies external parts of the cassette recorder using numbered diagrams and labels.

Section 2: Disassembly

Disassembly Procedures

Details various disassembly steps for the cassette recorder's main components and mechanisms.

Section 3: Adjustments

Mechanical Adjustment

Covers cleaning, demagnetizing, torque, and tape tension measurements for optimal performance.

Flywheel Thrust Play Adjustment

Procedure to adjust flywheel thrust play for optimal performance in playback mode.

Head Height Adjustment

Procedure for adjusting head heights to eliminate tape curl and twist.

Pinch Roller Pressure Measurement

Method to measure pinch roller pressure using a spring scale during playback.

Electrical Adjustment

Details on adjusting tape speed, head azimuth, phase, playback level, bias, and microphone sensitivity.

Tape Speed Adjustment

Procedure and specifications for setting the correct tape speed using a speed checker.

Record/playback Head Azimuth Adjustment

Method to adjust head azimuth for maximum output levels and proper phase alignment.

Phase Check

Procedure to check and ensure correct phase alignment between channels using an oscilloscope.

Playback Level Adjustment

Procedure to set the volume and confirm output levels for playback.

Record Bias Adjustment

Procedure for adjusting record bias and confirming audio output levels.

Microphone Sensitivity Adjustment

Guide for connecting microphone leads based on color marking for optimal sensitivity.

Section 4: Diagrams

Mounting Diagram

Illustrates the conductor side of the audio board and servo board mounting.

Schematic Diagram

Presents the detailed electronic schematic of the audio and servo boards.

Section 5: Exploded Views and Parts List

Exploded Views

Visual breakdowns of the device components for easy identification during repair.

Parts List

Comprehensive lists of all parts with part numbers and descriptions for ordering.