Kenwood KDC 100U Manual

The Kenwood KDC 100U is a single-DIN car stereo receiver featuring CD playback, AM/FM radio with 18 FM/6 AM presets, front auxiliary input, detachable faceplate security, 4-channel amplifier (50W x 4 max), bass/treble controls, loudness function, and compatibility with CD-R/RW media. Below are key sections covering features, installation, operation, settings, and troubleshooting.

Features at a Glance

Key components: Main unit, removable faceplate, wiring harness, installation hardware, user manual.

Feature	Description
CD Player	Plays CD, CD-R, CD-RW media
AM/FM Tuner	18 FM presets, 6 AM presets
Front AUX Input	3.5mm jack for external audio devices
Detachable Faceplate	Security feature to prevent theft
Audio Output	4-channel, 50W x 4 max power
Bass/Treble Controls	Adjustable sound settings
Loudness Function	Enhances bass at low volumes
Clock Display	Digital clock with dimmer function
Power Requirements	12V DC negative ground

Installation

Proper installation ensures optimal performance and safety.

1. Disconnect negative battery terminal before installation.
2. Connect wiring harness following color codes: Yellow (constant power), Red (ignition power), Black (ground).
3. Connect speaker wires matching polarity (+/-).
4. Slide unit into dashboard opening and secure with mounting sleeve.
5. Reconnect battery and test operation.

WARNING! Ensure proper grounding and fuse protection. Professional installation recommended.

Basic Operation

Power on unit by pressing SRC/PWR button.

1. Source selection: Press SRC to cycle through CD, Radio, AUX.
2. Volume control: Turn VOL knob or use remote control.
3. Mute function: Press MUTE button for instant silence.
4. Display dimmer: Hold DIMMER button to adjust brightness.

CAUTION! Do not operate while driving. Set controls before driving.

Specifications

• Power Output: 50W x 4 max (20W x 4 RMS)
• Tuner Section: FM/AM with 18/6 presets
• CD Compatibility: CD, CD-R, CD-RW
• Frequency Response: 20Hz - 20kHz
• Signal-to-Noise Ratio: >90dB
• Power Requirement: 12V DC negative ground
• Dimensions: 178mm(W) x 50mm(H) x 153mm(D)
• Operating Temp: -20°C to +60°C

Controls and Functions

Front panel controls: SRC/PWR, VOL knob, BAND, MUTE, DIMMER, AUX jack.

Remote Control: Power, volume, track selection, preset buttons, mute.

Display indicators: Clock, source mode, track number, preset number, audio settings. Function buttons: BASS, TREBLE, LOUD, FADER, BALANCE.

Audio Settings

Access audio menu by pressing FUNCTION button.

1. Bass/Treble: Adjust from -7 to +7 levels.
2. Loudness: On/Off for bass enhancement.
3. Balance/Fader: Adjust speaker output distribution.
4. EQ Presets: Flat, Rock, Pop, Jazz, Classical.

Tip: Reset audio settings by holding FUNCTION for 3 seconds.

Radio Operation

Press BAND to select AM/FM mode.

1. Tuning: Manual tune with TUNE buttons; seek with SCAN.
2. Presets: Store stations by holding preset button (1-6/1-18).
3. Auto-store: Press AS for automatic preset programming.
4. Local/DX: Switch between local and distant reception.

Note: Preset memory is retained when power is disconnected.

CD Playback

Insert CD with label facing up.

1. Play/Pause: Press SRC to play; again to pause.
2. Track Selection: Use >>| and |<< buttons.
3. Fast Forward/Rewind: Hold >>| or |<<.
4. Repeat: Press RPT for track repeat.
5. Random: Press RDM for shuffle play.
6. CD Text: Displays track info if available.

WARNING! Do not use damaged CDs. Keep discs clean and scratch-free.

Auxiliary Input

Connect external devices via front 3.5mm AUX jack.

1. Connect device using 3.5mm stereo cable.
2. Press SRC to select AUX mode.
3. Control volume and playback from connected device.
4. Disconnect when not in use to preserve battery.

CAUTION! Use only compatible audio devices. Avoid excessive volume.

Security Features

Detachable Faceplate: Remove for theft prevention. Store in protective case.

Security Code: Optional code can be set (default: 0000). If power is disconnected, enter code to reactivate.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Wiring/fuse	Check power connections; replace fuse (10A).
No sound	Speaker connections	Verify speaker wire connections; check mute function.
CD won't play	Disc/loading	Ensure compatible CD; clean disc; check for damage.
Poor radio reception	Antenna connection	Check antenna connection; extend antenna fully.
Unit locked	Security code	Enter security code (default 0000).

Reset: Disconnect power for 1 minute to reset unit.

Service: Contact authorized Kenwood service center. Warranty: 1 year limited.