Sony WM-FX277 Service Manual

Ref. No. Part No. Description Remark
WM-FX241
SERVICE MANUAL
RADIO CASSETTE PLAYER
E Model
The WM-FX241(E Model) is approximately the same as the WM-FX277(5E Model).
Consequently, only difference between WM-FX241(E Model) and WM-FX277
(5E Model) are listed.
For other information, please refer to the WM-FX277 service manual (9-927-695-
31) previously issued.
1 3-227-307-11 CABINET(FRONT)
2 3-227-308-11 WINDOW(LCD)
14 3-227-306-11 CABINET(CENTER)
16 3-227-313-11 LID, BATTERY CASE
z
DIFFERENCE PARTS LIST
EXPLODED VIEWS (Service Manual See page 17)
Ref. No.
Part No. Description Remark Part No. Description Remark
3-227-307-01 CABINET(FRONT)
3-227-308-01 WINDOW(LCD)
3-227-306-01 CABINET(CENTER)
3-227-313-01 LID, BATTERY CASE
WM-FX277 (5E Model) WM-FX241 (E Model)
z
ACCESSORIES & PACKING MATERIALS
3-225-744-11 MANUAL, INSTRUCTION (ENGLISH, SPANISH,
PORTUGUESE)
3-229-494-01 CASE, CARRYING
8-953-130-90 HEADPHONE MDR-E805LP
9-873-104-11
2001C0200-1
© 2001.3
Sony Corporation
Audio Entertainment Group
General Engineering Dept.
Ver 1.0 2001. 03

Sony WM-FX277 Specifications

General

Type	Cassette Player
Brand	Sony
Model	WM-FX277
Media Type	Cassette
Power Source	2 x AA Batteries
Mega Bass	Yes
Recording Function	No
Auto Reverse	Yes
Radio Tuner	AM/FM
Playback Function	Play, Stop
Headphones	3.5 mm Stereo Jack

Summary

REVISION HISTORY

SPECIFICATIONS

SERVICING NOTE

GENERAL

LOCATION AND FUNCTION OF CONTROLS

Overview of the player's buttons, switches, and controls.

DISASSEMBLY

CABINET AND CASSETTE HOLDER DISASSEMBLY

Procedures for disassembling the cassette holder and front cabinet.

MAIN BOARD AND MECHANISM ACCESS

Steps to access main board, mechanism deck, belt, motor, and playback head.

CASSETTE HOLDER ASSEMBLY

Detailed steps for cassette holder assembly procedures.

ADJUSTMENTS

MECHANICAL AND ELECTRICAL ADJUSTMENTS

Procedures for mechanical torque, electrical calibration, and tuner section adjustments.

DIAGRAMS

IC TERMINAL EXPLANATIONS

Detailed list of IC terminals and their functions for system control.

SYSTEM AND IC BLOCK DIAGRAMS

System block diagram and detailed diagrams for integrated circuits.

PRINTED WIRING BOARD LAYOUTS

Visual layout of components and traces on the main board's sides A and B.

SCHEMATIC NOTES AND WAVEFORMS

Notes for schematic interpretation and illustrated waveforms for key signals.

EXPLODED VIEWS

CABINET SECTION PARTS

Illustrated breakdown of cabinet parts with reference numbers and descriptions.

MECHANISM DECK SECTION PARTS

Illustrated breakdown of mechanism deck parts with reference numbers and descriptions.

ELECTRICAL PARTS LIST

CAPACITORS, SEMICONDUCTORS, AND RESISTORS

List of capacitors, semiconductors, and resistors with part numbers and values.

TRANSISTORS, COILS, AND MISCELLANEOUS

List of transistors, coils, variable resistors, switches, and accessories.