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Sony WM-EX372 User Manual

Sony WM-EX372
18 pages
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MICROFILM
SERVICE MANUAL
CASSETTE PLAYER
AEP Model
E Model
TC-K6/K7
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type MT-WMEX372-114
SPECIFICATIONS
WM-EX372
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
“DOLBY and the double-D symbol a are trade-
marks of Dolby Laboratories Licensing Corporation.
Ver 1.2 1999. 03
With SUPPLEMENT 1
(9-923-319-81)
With SUPPLEMENT 2
(9-923-319-82)
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Sony WM-EX372 Specifications

General IconGeneral
TypeCassette Player
BrandSony
ModelWM-EX372
Playback Speed4.8 cm/s
Power Supply2 x AA batteries
Dimensions104 x 75 x 22 mm
Mega BassYes
Automatic Volume Limiter System (AVLS)Yes
FeaturesMega Bass
Headphone Jack3.5 mm
Frequency Response40 Hz - 15 kHz
Weight (without battery)140 g

Summary

Specifications Overview

Power Requirements

Details power sources like DC batteries and external adapters.

Unit Dimensions

Physical measurements including projecting parts and controls.

Unit Mass

Weight of the unit with and without batteries/cassette.

Included Accessories

Items included with the unit, such as headphones and belt clip.

General Information and Precautions

General Handling and Repair Notes

Covers general handling, cleaning, and safety notes for repairs.

General Operation

Location of Controls and Indicators

Identifies and describes the buttons, switches, and indicators on the unit.

How to Play a Tape

Instructions on how to insert a cassette and play music.

Preparing the Device for Use

Covers inserting batteries, using external power, and belt clip attachment.

Dolby Noise Reduction System Usage

Explains how to use the Dolby noise reduction system.

Disassembly Guide

Overall Disassembly Sequence

Outlines the sequence for disassembling the set.

Rear Cabinet Cover Removal

Step-by-step guide for removing the rear cabinet cover.

Disassembly Guide

Cassette Holder Mechanism Removal

Detailed steps for removing the cassette holder mechanism.

Disassembly Guide

Mega Bass Unit (Dolby) Detachment

Instructions for detaching the Mega Bass Unit.

Mechanical Adjustments

General Adjustment Procedures and Precautions

Cleaning, demagnetizing, and general adjustment rules.

Torque Measurement Procedures

Procedures for measuring torque on various mechanisms.

Tape Pulling Force Measurement

Method for measuring tape pulling force.

Electrical Adjustments

General Adjustment Setup and Precautions

Setup conditions and precautions for electrical adjustments.

Tape Speed Adjustment Process

Steps to adjust tape speed using a test tape and frequency counter.

Diagrams and Schematics

Block Diagram Overview

High-level functional overview of the unit's circuitry.

Diagrams and Schematics

Printed Wiring Board Component Layout

Diagram showing component placement on the main board.

Diagrams and Schematics

Detailed Schematic Diagram

Detailed circuit diagram of the unit's electronics.

Signal Waveform Examples

Visual representations of signal waveforms at specific points.

Diagrams and Schematics

Integrated Circuit Block Diagrams

Functional breakdown of integrated circuits used in the unit.

Exploded Views

Cassette Holder Assembly Diagrams

Exploded diagrams showing parts of the cassette holder assembly.

Exploded Views

Cabinet Assembly Diagrams

Exploded diagrams of the unit's cabinet and external parts.

Exploded Views

Mechanism Deck Assembly Diagrams

Exploded diagrams of the tape transport mechanism.

Electrical Parts List

Capacitor Specifications

List of capacitors with part numbers, values, and ratings.

Connector Details

List of connectors with part numbers and descriptions.

Diode Specifications

List of diodes with part numbers and descriptions.

Integrated Circuit (IC) List

List of integrated circuits with part numbers and designations.

Jack Information

List of audio/power jacks with part numbers.

Jumper Resistor Configurations

List of jumper resistors used for configuration.

Electrical Parts List

Resistor Specifications

List of resistors with part numbers, values, and tolerances.

Variable Resistor Details

List of variable resistors (potentiometers) used for control.

Switch Specifications

List of switches with part numbers and types.

Thermistor Specifications

List of thermistors with part numbers and resistance values.

Miscellaneous Component List

List of general components like main units and heads.

Accessories and Packing Material List

List of included accessories and packing items.

Supplement 1: Chinese Model

Chinese Model Addition Details

Details the addition of a Chinese model to the product line.

Chinese Model Accessories

Lists accessories specific to the Chinese model.

Supplement 2: Tourist Model

Tourist Model Addition Details

Details the addition of a Tourist model to the product line.

Tourist Model Accessories

Lists accessories specific to the Tourist model.

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