Sony Walkman WM-GX670 Radio User Manual

The Sony Walkman WM-GX670 is a portable AM/FM stereo cassette player with digital tuner, auto-reverse playback, Mega Bass sound system, Dolby B noise reduction, auto tape selector, LCD display with backlight, lock function, and stereo headphones. Powered by two AA batteries or optional AC adapter. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Playing Cassette Tapes 8. Radio Operation 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Cassette mechanism with auto-reverse, AM/FM stereo tuner, LCD display, Headphone jack, DC IN jack, Line Out jack.

Feature	Description
Auto-Reverse	Automatically plays other side of tape
Mega Bass	Enhances low frequency sound
Dolby B NR	Reduces tape hiss during playback
Digital Tuner	AM/FM stereo with 20 presets (10 FM, 10 AM)
LCD Display	Shows time, station, tape counter, battery status
Headphone Jack	3.5mm stereo output for headphones
DC IN Jack	For optional AC adapter (3V DC)
Line Out Jack	Fixed audio output to external amplifier
Tape Selector	Auto-detects Normal/CrO2/Metal tapes
Lock Function	Prevents accidental button presses

Installation

Unpack and inspect contents. Place on stable surface.

Insert batteries: Open battery compartment, insert two AA batteries observing polarity.
Connect headphones: Plug stereo headphones into headphone jack.
Connect AC adapter (optional): Plug DC plug into DC IN jack, then plug adapter into AC outlet.
Extend antenna: Fully extend telescopic antenna for FM reception.

WARNING! Do not mix old and new batteries. Remove batteries if not using for extended period.

First-Time Setup

Power on Walkman; follow these initial steps.

Set clock: Press and hold CLOCK button, use TUNING buttons to set time.
Program radio stations: Tune to desired station, press and hold MEMORY button, select preset number.
Adjust sound: Use Mega Bass switch to enhance bass response.
Set tape type: Auto tape selector detects tape type automatically.

CAUTION! Keep away from strong magnetic fields which may affect tape playback.

Specifications

Power Requirements: 3V DC (two AA batteries) or AC adapter.
Battery Life: Approx. 20 hours playback (with alkaline batteries).
Frequency Range: FM: 87.5-108 MHz, AM: 530-1710 kHz.
Output: Headphone jack: 3.5mm stereo, Line Out: 0.5V RMS.
Wow & Flutter: 0.15% WRMS.
Frequency Response: 40-15,000 Hz (with Metal tape).
Dimensions: 114 x 79 x 29 mm.
Weight: 210g (without batteries).

Controls and Settings

Main Controls: PLAY/PAUSE, STOP, FF, REW, VOLUME, TUNING, BAND (FM/AM), MEMORY.

Switches: POWER ON/OFF, Mega Bass ON/OFF, Dolby NR ON/OFF, Lock switch.

Tape Operation: Auto-reverse, program play, repeat play. Radio: Manual tuning, auto scan, preset memory (20 stations). Display: Shows FM/AM, frequency, tape direction, battery indicator, Dolby NR, Mega Bass.

Connecting Devices

Headphones: 3.5mm stereo jack. External amplifier: Use Line Out jack. AC adapter: DC IN jack.

Turn off Walkman before connecting devices.
Use proper cable for connection (3.5mm stereo cable for Line Out).
For best FM reception, extend antenna fully and adjust direction.

Tip: Use fresh alkaline batteries for optimal performance.

Playing Cassette Tapes

Supports Normal, CrO2, and Metal tapes.

Insert cassette: Press EJECT, insert tape with exposed tape facing outward.
Play: Press PLAY; adjust volume with VOLUME control.
Stop: Press STOP; press EJECT to remove tape.
Fast Forward/Rewind: Press FF or REW buttons.
Auto-reverse: Automatically reverses direction at tape end.
Program play: Press PROGRAM to select tracks.
Repeat: Press REPEAT for continuous play.
Dolby NR: Engage for tapes recorded with Dolby B noise reduction.

WARNING! Do not expose tapes to direct sunlight or high temperature.

Radio Operation

AM/FM stereo reception with digital tuning.

Select band: Press BAND to switch between FM and AM.
Tune manually: Press TUNING up/down buttons.
Auto scan: Press and hold TUNING to scan for next strong station.
Store presets: Tune to station, press MEMORY, select preset number (1-20).
Recall preset: Press and hold PRESET button, select preset number.
Stereo/Mono: FM stereo automatically switches to mono for weak signals.

Note: For best AM reception, rotate Walkman for optimal signal.

Care & Cleaning

Remove batteries before cleaning. Use soft dry cloth; avoid solvents.

Head cleaning: Use head cleaning cassette periodically. Capstan cleaning: Use cotton swab with isopropyl alcohol.

CAUTION! Never use abrasive cleaners. Keep away from water and humidity.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Batteries/connections	Replace batteries; check polarity; ensure battery contacts clean.
No sound from headphones	Volume/connections	Check volume setting; ensure headphones fully plugged in.
Tape doesn't play	Tape/Dolby NR	Ensure tape inserted properly; check if Dolby NR matches recording.
Poor radio reception	Antenna/location	Extend antenna fully; move to different location; avoid obstructions.
Distorted sound	Battery/tape	Replace weak batteries; clean tape head; try different tape.
Tape eats cassette	Dirty mechanism	Clean capstan and pinch roller; use higher quality tapes.

Reset: Remove batteries for 30 seconds to reset microcomputer.

Service: 1-800-222-7669; www.sony.com/audio