Table of Contents
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WM-FX651/FX653/FX655
SERVICE MANUAL
Ver 1.1 2002. 01
Sony Corporation
9-923-157-12
2002A1600-1
Personal Audio Company
© 2002.1
Published by Sony Engineering Corporation
Photo : WM-FX651
RADIO CASSETTE PLAYER
AEP Model
WM-FX651/FX653/FX655
E Model
WM-FX653/FX655
Australian Model
Tourist Model
WM-FX655
Canadian Model
WN-FX653
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Table of Contents
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Summarization of Contents
Specifications Overview
Radio Section Specifications
Details frequency range for FM and AM.
Tape Section Specifications
Provides frequency response for tape playback.
Output and General Specifications
Lists headphone output power, power requirements, and dimensions.
Mass and Supplied Accessories
Details unit weight and included accessories for various models.
General Unit Information and Service Notes
Location of Controls
Identifies external controls and their functions on the unit.
Service Precautions
Guidelines for adjustments and voltage checks using a jig.
Disassembly Procedures - Case and Tuner Board
Case Assembly Removal
Step-by-step guide for removing the main case assembly.
Tuner Board Removal
Procedure for detaching the tuner board from the unit.
Disassembly Procedures - Audio Board and Cassette Lid
Audio Board Removal
Steps to remove the audio board, including solder removal.
Cassette Lid Assembly Removal
Guide for detaching the cassette lid assembly.
Disassembly Procedures - Mechanism Deck
Mechanism Deck Removal
Procedure for detaching the mechanism deck.
Mechanical Adjustment Procedures
Mechanical Adjustment Precautions
Guidelines for mechanical adjustments, including cleaning and tools.
Electrical Adjustment Procedures
Electrical Adjustment Precautions
Precautions for electrical adjustments, including voltage checks.
IC Terminal Explanations
IC Terminal Function Details
Details the function of each terminal for specific ICs.
Tuner Section Printed Wiring Boards
Tuner Board Layout Side A
Shows component placement on the tuner board's front side.
Tuner Board Layout Side B
Shows component placement on the tuner board's rear side.
Tuner Section Schematic Diagram
Tuner Section Circuit Diagram
Detailed schematic of the tuner section circuitry.
Tuner Schematic Notes
Explains symbols and conditions used in the tuner schematic.
Audio Section Schematic Diagram
Audio Section Circuit Diagram
Detailed schematic of the audio section circuitry.
Audio Schematic Notes
Explains symbols and conditions used in the audio schematic.
Audio Section Printed Wiring Boards
Audio Board Layout Side A
Shows component placement on the audio board's front side.
Audio Board Layout Side B
Shows component placement on the audio board's rear side.
IC Block Diagrams
TA7371AF-EL IC Block Diagram (Tuner)
Functional block diagram for the TA7371AF-EL IC in the tuner section.
TA2072AF IC Block Diagram (Audio)
Functional block diagram for the TA2072AF IC in the audio section.
TA-2022AFN-EL IC Block Diagram (Tuner)
Functional block diagram for the TA-2022AFN-EL IC in the tuner section.
MM1279XVBE IC Block Diagram (Audio)
Functional block diagram for the MM1279XVBE IC in the audio section.
Exploded Views - Cabinet Section
Cabinet Section Parts Breakdown
Exploded view of the cabinet section with part numbers.
Exploded Views - Audio and Tuner Board Section
Audio and Tuner Board Section Breakdown
Exploded view of the audio and tuner board sections with part numbers.
Exploded Views - Mechanism Section
Mechanism Section Breakdown
Exploded view of the mechanism section with part numbers.
Electrical Parts List - Audio Section
Audio Board Capacitors
List of capacitors used on the audio board with part numbers.
Audio Board Connectors and Diodes
List of connectors and diodes for the audio board.
Audio Board ICs and Jacks
List of integrated circuits and jacks for the audio board.
Audio Board Ferrite Beads and Coils
List of ferrite beads and coils for the audio board.
Electrical Parts List - Tuner Section Components
Tuner Section Coils and Transistors
List of coils and transistors for the tuner section.
Tuner Section Resistors
List of resistors used in the tuner section.
Tuner Section Switches and Variable Resistors
List of switches and variable resistors for the tuner section.
Tuner Board Capacitors
List of capacitors for the tuner board.
Electrical Parts List - Tuner Section Continued
Tuner Section Capacitors (Part 2)
Continuation of the capacitor list for the tuner section.
Tuner Section Filters, Connectors, Diodes, ICs, Coils
Lists filters, connectors, diodes, ICs, and coils for the tuner section.
Electrical Parts List - Tuner Section Resistors and Switches
Tuner Section Resistors (Part 2)
Continuation of the resistor list for the tuner section.
Tuner Section Transistors
List of transistors for the tuner section.
Tuner Section Variable Resistors and Switches
Lists variable resistors and switches for the tuner section.
Parts List - Accessories and Manuals
Switches and Transformers
Lists part numbers for switches and transformers.
Accessories and Packing Materials
Lists accessories, packing materials, and manuals.
Supplement-1
Supplement-1 Content
Notes changes to the TUNER Board Suffix and addition of Chinese model.
Service Note Reiterated
Service Note for Jig Usage
Reiterates the method for adjustment and voltage check using a jig.
Correction Notices
Cabinet Section Part Corrections
Lists corrections for part numbers in the cabinet section.
Audio/Tuner Board Part Corrections
Lists corrections for part numbers in the audio/tuner board section.
Tuner Board Part Number Changes
Details changes in tuner board part numbers and circuit modifications.
Tuner Section Printed Wiring Boards - Revisited
Tuner Board Layout Side A (Revisited)
Component placement on the tuner board's front side.
Tuner Board Layout Side B (Revisited)
Component placement on the tuner board's rear side.
Tuner Section Schematic Diagram - Revisited
Tuner Section Circuit Diagram Details
Detailed schematic of the tuner section with notes and component values.
Printing Instructions for Large Documents
Printing Large Sized Documents
How to print documents larger than standard paper sizes.
Printing by Specifying a Range
Method for printing specific sections of large documents.
Revision History
Revision Log
Records changes made to the service manual over different versions.
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