Kenwood KDC-3047 - User Manual

This document describes the Kenwood KDC-3247AY CD receiver, along with related models KDC-3047, KDC-3047GY, KDC-3047M, KDC-3347, and KDC-314. It serves as a user manual, providing instructions for operation, installation, and maintenance.

Function Description

The Kenwood KDC-3247AY is a CD receiver designed for in-car audio systems. Its primary functions include playing music from CDs and audio files, listening to radio broadcasts, and providing auxiliary input for external devices.

Music Disc/Audio File Operation: The unit supports playback of MP3 (.mp3) and WMA (.wma) audio files from CD-R/RW/ROM discs. It is compatible with ISO 9660 Level 1/2, Joliet, Romeo, and Long file name formats. Playback order for audio files follows a folder/file tree structure.

Play Function: Includes repeat play (track, file, or folder repeat), random play (disc or folder random), and scan play (successive intro playback).
Music Search: Allows users to select music from the device or media being played. For audio files, search can be done by moving between folders/files, selecting a folder/file, returning to the previous folder, or returning to the root folder.
Direct Music Search (KDC-3347 with remote control): Enables searching for music by entering the track number using the remote control.

Tuner Operation: The unit features an FM/AM tuner with Program Type (PTY) functionality.

PTY (Program Type): Allows users to search for stations based on program types such as Speech (News, Current Affairs, Information, Sport, Education, Drama, Culture, Science, Varied) and Music (Serious Classical, Other Music, Jazz, Pop, Country, National, Easy Listening, Oldies, Folk, Light Classical, Documentary).
Program Type Preset: Users can preset desired program types to buttons [1]–[6] for quick recall.
Changing Language for PTY Function: The display language for program types can be set to English, French, or German.
Band Select: Switches between FM1, FM2, FM3, and AM bands.
Station Select: Allows selection of stations.
Station Memory: Up to 6 stations can be memorized per band (FM1, FM2, FM3, AM) or across different bands depending on the "PRESET TYPE" setting.
Traffic Information: Turns ON/OFF the Traffic Information function, displaying "TI" when active and "TRAFFIC" during a bulletin.

General Functions:

Volume Control: Adjustable via the [VOL] knob.
Source Select: Switches between Tuner, CD, Auxiliary Input, and Standby modes.
Muting Volume upon Reception of Phone Call: The audio system automatically mutes when a call comes in, displaying "CALL." The audio can be restored by pressing the [SRC] button. This feature requires connecting the MUTE wire to a telephone accessory.
Display Indicator: Shows various indicators such as "ST" (stereo broadcast), "RDS" (RDS service available), "TI" (Traffic Information on), "IN" (disc in unit), and an icon indicating the operating state or Audio Control setting.
Text Display Selection: Allows changing displayed information for each source, including Program Service name, Radio text, Frequency, Clock, Disc title, Track title, Play time & Track number, Music title & Artist name, Album name & Artist name, Folder name, File name, and Source name.
Function Setting: Provides access to various settings including Clock Adjust, Time Sync, Dimmer, Text Scroll, Local Seek, Seek Mode, Auto Memory, Monaural Reception, News Set, Alternative Frequency, RDS Regional, Auto TP Seek, Name Set (for AUX), Mixed Preset Memory Switching, Key Beep, Russian Language Setting, Power OFF Timer, Built-in AUX, CD Read method, Switching Preout (Rear/Subwoofer), Speaker Select, and Firmware Upgrade.
Audio Control: Includes Subwoofer output settings (ON/OFF), Bass Boost (LV1, LV2, OFF), System Q (preset equalizer curves: Natural, Rock, Pops, Easy, Top 40, Jazz, Game, User), Bass/Middle/Treble level adjust, Balance, Fader, Subwoofer level adjust, Subwoofer Low Pass Filter, Subwoofer Phase, Supreme (audio enhancement technology), and Volume Offset.

Important Technical Specifications

FM Tuner Section:

Frequency range (50 kHz space): 87.5 MHz – 108.0 MHz
Usable sensitivity (S/N = 26dB): 1 μV/75 Ω
Quieting Sensitivity (S/N = 46dB): 2.5 μV/75 Ω
Frequency response (±3.0 dB): 30 Hz - 15 kHz
Signal to Noise ratio (MONO): 63 dB
Stereo separation (1 kHz): 40 dB

MW Tuner Section:

Frequency range (9 kHz space): 531 kHz - 1611 kHz
Usable sensitivity (S/N = 20dB): 36 μV

LW Tuner Section:

Frequency range: 153 kHz - 279 kHz
Usable sensitivity (S/N = 20dB): 57 μV

CD Player Section:

Laser diode: GaAlAs
Digital filter (D/A): 8 Times Over Sampling
D/A Converter: 24 Bit
Spindle speed: 500 - 200 rpm (CLV)
Wow & Flutter: Below Measurable Limit
Frequency response (±1 dB): 20 Hz - 20 kHz
Total harmonic distortion (1 kHz): 0.01 %
Signal to Noise ratio (1 kHz): 105 dB
Dynamic range: 93 dB
MP3 decode: Compliant with MPEG-1/2 Audio Layer-3
WMA decode: Compliant with Windows Media Audio

Audio Section:

Maximum output power: 50 W x 4
Output power (DIN 45324, +B=14.4V): 22 W x 4
Speaker Impedance: 4 - 8 Ω
Tone action: Bass: 100 Hz ±8 dB, Middle: 1 kHz ±8 dB, Treble: 10 kHz ±8 dB
Preout level / Load (CD) (KDC-3047/ KDC-3047GY/ KDC-3047M/ KDC-3347/ KDC-314): 2000 mV/10 KΩ
Preout impedance (KDC-3047/ KDC-3047GY/ KDC-3047M/ KDC-3347/ KDC-314): ≤ 600 Ω

Auxiliary Input:

Frequency response (±3 dB): 20 Hz - 20 kHz
Input Maximum Voltage: 1200 mV
Input Impedance: 10 kΩ

General:

Operating voltage: 11 – 16V allowable (14.4 V nominal)
Maximum Current consumption: 10 A
Installation Size (W x H x D): 182 x 53 x 155 mm
Weight: 1.3 kg

Usage Features

Before First Use: The unit is initially set in Demonstration mode. This mode must be canceled upon first use by turning the [VOL] knob when "CANCEL DEMO" is displayed, then selecting "YES."

Resetting the Unit: If the unit malfunctions, pressing the Reset button (located behind the detachable faceplate) returns it to factory settings.

Detachable Faceplate: The faceplate can be detached for security purposes, deterring theft. It should be removed immediately after pressing the release button to prevent damage from vibration.

Remote Control (KDC-3347 accessory): A remote control unit (RC-405) is provided with the KDC-3347 model for convenient operation, including volume control, source selection, music/folder selection, and direct music search. The remote uses a CR2025 button battery.

Installation: Installation involves connecting the wiring harness to the vehicle's speaker and power connectors, then mounting the unit in the console. Proper grounding and secure connections are crucial. The unit should be mounted at an angle of 30° or less.

Troubleshooting Guide: The manual provides a guide for common issues and their solutions, such as subwoofer setup problems, Power OFF Timer not functioning, volume adjustment issues, poor radio reception, and disc/audio file playback errors. It also lists error messages like "TOC ERROR," "ERROR 05," "ERROR 99," "IN (Blink)," "PROTECT," "NA FILE," "COPY PRO," and "NO MUSIC/ERROR 15," along with their meanings and recommended actions.

Maintenance Features

Cleaning the Unit: The faceplate should be wiped with a dry soft cloth. For stubborn stains, a cloth moistened with neutral cleaner followed by a clean, dry cloth is recommended. Spray cleaners should not be applied directly to the unit.

Handling CDs:

Avoid touching the recording surface of the CD.
Do not stick tape or accessories to the CD.
Clean CDs from the center outwards.
Remove CDs horizontally from the unit.
Remove any burrs from the CD's center hole or rim before use.

Lens Fogging: In cold weather, condensation may form on the CD player's lens. If this occurs, remove the disc and wait for the condensation to evaporate before attempting to play.

Battery Replacement (Remote Control): The remote control battery (CR2025) should be replaced when needed by pulling out the battery tray and inserting a new battery with correct polarity. Used batteries should be disposed of promptly and kept out of reach of children.

Environmental Considerations: The product complies with the EMC Directive 2004/108/EC and the Turkish "Regulation on the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment." Products and batteries marked with the crossed-out wheeled bin symbol should not be disposed of as household waste but recycled at appropriate facilities. The "Pb" sign on batteries indicates the presence of lead.

Laser Product Safety: The unit is a Class 1 LASER PRODUCT, meaning it utilizes laser beams of a weaker class, posing no danger of hazardous radiation outside the unit.