Sony WM-FX141 User Manual

WM-FX141
US Model
AEP Model
E Model
SERVICE MANUAL
RADIO CASSETTE PLAYER
MICROFILM
Model Name Using Similar Mechanism WM-FX101
Tape Transport Mechanism Type MF-WMFX103-48
SPECIFICATIONS
Radio Frequency
FM : 87.6 – 108 MHz (US, Chilean, Latin America, Central and
South America Models)
: 65.0 – 107.9MHz (East European Model)
: 87.6 – 107.9 MHz (Other Models)
AM : 530 – 1,710 kHz (US, Chilean, Latin America, Central and
South America Models)
: 531 – 1,602kHz (Other Models)
Power requirements
3V DC batteries R6 (size AA) × 2
External DC 3V power sources
Battery life
(Aprroximate hours)
Battery Playback Radio
Sony alkaline LR6 (SG) 16 hrs 48 hrs
Sony R6P (SR) 4.5 hrs 16 hrs
Dimensions
93.9 × 118.5 × 35.9 mm (w/h/d)
(3
3
/4 × 4
3
/4 × 1
3
/16 in.) incl. projecting parts
Mass
205g (7.3 oz) incl.batteries
Supplied accessories
• Stereo headphones or earphones (1)
• Belt clip (1)
Design and specifications are subject to change without notice.
Ver 1.3 1999. 05
With SUPPLEMENT-1 (9-923-296-81)
With SUPPLEMENT-2 (9-923-296-82)

Sony WM-FX141 Specifications

General

Type	Cassette Player
Brand	Sony
Model	WM-FX141
Media Type	Cassette
Power Supply	2 x AA batteries
Headphone Jack	Yes
Mega Bass	Yes
Automatic Volume Limiter System (AVLS)	Yes
Radio Tuner	AM/FM
Battery Life	Approx. 30 hours playback (with batteries)

Summary

SPECIFICATIONS

Radio Frequency

Power requirements

SECTION 2 DISASSEMBLY

2-1. CABINET (REAR)

Step-by-step instructions for removing the rear cabinet of the unit.

2-2. MECHANISM DECK AND MAIN BOARD

Procedure for detaching the mechanism deck and main board assembly.

2-3. MAIN BOARD

Detailed steps for separating the main board from the mechanism deck.

2-4. CASSETTE LID

2-5. DIAL POINTER SETTING

SECTION 3 ADJUSTMENTS

3-1. MECHANICAL ADJUSTMENTS

Procedures and precautions for mechanical adjustments, including torque measurement.

3-2. ELECTRICAL ADJUSTMENTS

Guidelines for electrical adjustments, covering tape section and tuner section.

SECTION 4 DIAGRAMS

4-1. BLOCK DIAGRAM

Overall system block diagram illustrating signal flow and component interactions.

4-2. SCHEMATIC DIAGRAM - MAIN SECTION

Detailed schematic diagram of the main circuit board and its components.

4-3. PRINTED WIRING BOARD - MAIN SECTION -

Layout of the printed wiring board for the main section, showing component placement.

4-4. IC BLOCK DIAGRAM

Internal block diagram of the TA8122AF IC, detailing its functions and pins.

SECTION 5 EXPLODED VIEWS

5-1. CABINET AND BOARD SECTION

Exploded view of the cabinet and main board assembly with part references.

5-2. MECHANISM SECTION (MF-WMFX103-48)

SECTION 6 ELECTRICAL PARTS LIST

CAPACITORS

SEMICONDUCTORS

RESISTORS

COILS