Sony MDS-JB920 Car Stereo Manual

The Sony MDS-JB920 is a high-performance car stereo system featuring a built-in MiniDisc player/recorder, AM/FM tuner with 30 station presets, CD changer control, Dolby B noise reduction, and advanced audio controls. Designed for in-vehicle use with 12V DC power, it offers superior sound quality, programmable playback, and customizable settings for an optimal driving audio experience. 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 MiniDisc Media 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Front-loading MiniDisc mechanism, AM/FM tuner, Remote Control (optional), Line-in/Aux input, CD changer control port, Power antenna lead, Speaker outputs.

Feature	Description
MiniDisc Play/Record	Records from CD, tuner, or line-in; plays back MDs
AM/FM Tuner	30 presets (18 FM, 12 AM); auto-store function
CD Changer Control	Controls compatible Sony CD changers (via BUS connection)
Dolby B NR	Reduces tape hiss during recording/playback
Line-in/Aux Input	3.5mm jack for external audio sources
Power Output	50W x 4 max (20W RMS x 4)
EJECT	Ejects MiniDisc from slot
SOURCE	Cycles between MD, Tuner, CD, Aux
MUTE	Mutes sound instantly
POWER	Turns unit on/off (ignition dependent)

Installation

Unpack and inspect contents. Ensure vehicle is off and battery disconnected.

Connect power: Red wire to ignition-switched 12V+, yellow wire to constant 12V+, black wire to chassis ground.
Connect speakers: Match speaker wires to front/rear outputs (observe polarity).
Connect antenna: Plug vehicle antenna cable into ANT port.
Connect optional CD changer: Use BUS cable to control port.
Secure unit in dashboard using mounting sleeve and trim ring.

WARNING! Disconnect vehicle battery before installation to prevent short circuits. Ensure all connections are secure and insulated.

First-Time Setup

Power on unit (ignition on); follow initial setup.

Set clock: Press and hold CLOCK, adjust with TUNE/SEEK.
Program radio stations: Tune to station, press and hold a preset button (1-6) for 2 seconds.
Adjust audio: Use BASS, TREBLE, BALANCE, FADER for preferred sound.
For MiniDisc: Insert a blank MD, press REC to enter record standby.

CAUTION! Ensure unit is securely mounted; wires should not interfere with vehicle controls.

Specifications

Audio Format: MiniDisc (play/record), CD control.
Tuner: AM/FM with 30 presets.
Sound: Bass, Treble, Balance, Fader, Loudness.
Terminals: Power (12V), Speaker outputs (4 ch), ANT, BUS, Line-in.
MiniDisc player: Supports record, play, edit, shuffle, repeat.
Supported formats: MiniDisc (SP/LP modes), Audio CDs via changer.
Power Source: 12V DC, negative ground.
Operating Temp: -20°C to 60°C (-4°F to 140°F).

Controls and Settings

Access settings via rotary encoder and function buttons. Front Panel: POWER, EJECT, SOURCE, VOLUME, MUTE.

Remote (optional): POWER, Numeric buttons, EJECT, SOURCE, VOLUME, MUTE, DISPLAY, MENU.

Audio: BASS, TREBLE, BALANCE, FADER, LOUDNESS. Tuner: Manual/Auto seek, Preset scan, Local/DX. MD: REC, PLAY, STOP, PAUSE, FF/REW, EDIT. Setup: Clock, Beep, Dimmer, AUX gain. Security: Code entry (default 0000).

Connecting Devices

Antenna: Standard vehicle plug. Aux: 3.5mm to Line-in. CD changer: BUS cable.

Turn off vehicle ignition before connecting.
Match cables to ports (e.g., BUS to control port).
Select source via SOURCE (MD, TUNER, CD, AUX).

Tip: Use high-quality cables for aux input to minimize noise.

Playing MiniDisc Media

Supports prerecorded and recordable MiniDiscs.

Insert disc: Press EJECT, load MD label-side up.
Play: Press PLAY; select track with numeric buttons or FF/REW.
Stop: Press STOP; eject with EJECT.
Skip: PREV/NEXT for tracks.
Shuffle/Repeat: Press SHUFFLE or REPEAT during play.
Recording: Select source (TUNER, CD, AUX), press REC then PLAY.
Editing: Use EDIT to divide, combine, or erase tracks.
Title input: Use alphanumeric buttons to name discs/tracks.

WARNING! Do not expose MiniDiscs to extreme heat or magnetic fields. Keep fingers from slot mechanism.

Accessibility Features

Dimmer: Adjust display brightness in SETUP. Beep: Turn key beep on/off. Security Code: Set 4-digit code to deter theft (default 0000).

Care & Cleaning

Disconnect power before cleaning. Use soft, dry cloth; avoid liquids.

CAUTION! Do not use solvents; keep MiniDiscs clean and free of dust.

Regulatory Information

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit does not power on	Power connection/ignition	Check 12V+ and ground wires; ensure ignition is on.
No sound from speakers	Wiring/settings	Verify speaker connections; check balance/fader; ensure mute is off.
Poor radio reception	Antenna connection	Ensure antenna cable is fully inserted; check for damage.
MiniDisc not recognized	Disc/mechanism	Eject and reinsert disc; ensure disc is compatible and undamaged.
Recording fails	Disc/source	Use recordable MD; ensure source is active and connected.

Reset: Disconnect power for 2 minutes to reset microprocessor.

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