Sony WM-FX50 - User Manual

WM-EX90/FX90
SERVICE MANUAL
WM-EX50
TABLE OF CONTENTS
GENERAL: . westecsstinpiessiniiocntetcncetasanueiaenenaarmnes 2- 6
Messages, warnings and tipS.........ccsssccccessessseeeeeees 2
Test equipment, Jigs and material .................006 3
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Location and function of controls ...................0ee 4
User’s instruction (WM-EX50 only) .............. 5- 6
DET VICE MOLES: ivivavelpesgbadvortabecsieesstianvbocecoussJemeeveee 6
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LCD BLOCK INFORMATION(WM-EX50 only).... 8
Data code chart and indication mode ................. 8
BLOCK. DIAGRAMS xeiisssct sasccnssmunsacchietearlinss ees 9-10
SCHEMATICS AND BOARD DIAGRAMS ....... 11-19
Semiconductor layouts ...........cccccsssssssecceeeeeeeeeeenes 14
POC Fey GUE Ses haces neve veteh cen on eshite ce baesios cau Qaeusecesncenrcnsawents 19
SPARE PARTS LIB DE ncdGuteecokecetitiaiacs 20-28
Exploded views and mechanical parts............ 20-22
Electrical parts cctusctascnctiicenitiaciintivacewsn 23-28
ADUOSTIMERINGS: sites. dsSieoessaints ceuurelstecbentetedecaines 29-32
Mechanical measurements ...........ceeeeeseeeeeeeeeeneeees 29
Mechanical adjustments ...............ceeeeeeeseseeneeeeeeeeee 29
Electrical alignments ........cccesscceseeeeeeeeeeeetees 30-32
Adjustment location s...cicccccicccasscnvsessicnorersseness 29-30
SPECIE IC A TIONS s.fius pe coccedecteadeceeccinusavedsvsperasniohs 34
US Model
AEP Model
E Model
WM-EX50/FX50
UK Model
WM-EX50
Canadian Model
WM-FX50
WWN-FX50
WM-EX50 : MT-WMEX50-01
Tape Transport
Mechanism
WM-FX50 : MT-WMFX50-01
Dolby noise reduction manufactured under license
from Dolby Laboratories Licensing Corporation.
*DOLBY” and the double-D symbol OO are trade-
marks of Dolby Laboratories Licensing Corporation.
CASSETTE PLAYER
WM-EX50
RADIO CASSETTE PLAYER
WM-FX50
SONY.

Summary

GENERAL

Safety-Related Component Identification

Identifies critical components for safe operation and specifies replacement parts.

Service and Repair Notes

Key information for servicing, including flexible circuit board repair and chip component replacement.

REMOVAL

Tuner Unit Removal Procedure

Step-by-step instructions for safely removing the tuner unit from the cassette lid assembly.

SPARE PARTS LIST

Mechanical Parts and Exploded Views

Illustrated breakdown of mechanical components with part numbers and assembly references.

ADJUSTMENTS

Mechanical Measurement Procedures

Steps for measuring key mechanical parameters of the tape transport mechanism.

Mechanical Adjustment Precautions

Tape Speed Adjustment

Procedure and specification for correctly adjusting the tape playback speed using RV601.

Electrical Alignment Procedures

Sony WM-FX50 Specifications

General

Type	Cassette Player
Brand	Sony
Model	WM-FX50
Tuner	FM/AM
Power Supply	2 x AA Batteries
Headphone Jack	3.5 mm
Mega Bass	Yes
Water Resistance	No
Wow and Flutter	0.15% (WRMS)