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Kenwood DM-SG7 User Manual

Kenwood DM-SG7
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MINIDISC RECORDER
B60-4366-00 00 MA (T) 9902
KENWOOD CORPORATION
INSTRUCTION MANUAL
DM-SG7
AP
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Kenwood DM-SG7 Specifications

System and Audio IconSystem and Audio
systemMinidisc digital audio system
laserSemiconductor laser
recording methodField modulation overwrite method
audio compressionATRAC (Adaptive TRansform Acoustic Coding)
playing rotationApprox. 400 rpm ~ 900 rpm (CLV)
D/A conversion1 Bit
oversampling128 fs (5644.8 kHz)
A/D conversion methodSigma-delta method
sampling frequency44.1 kHz
Digital Audio Performance IconDigital Audio Performance
frequency response (playback mode)8 Hz ~ 20 kHz, ± 1 dB
signal to noise ratio (playback mode)More than 92 dB
dynamic range (playback mode)More than 90 dB
total harmonic distortion (1 kHz, playback mode)Less than 0.007 %
channel separation (1 kHz, playback mode)More than 85 dB
wow & flutterLess than unmeasurable limit
Inputs and Outputs IconInputs and Outputs
analog input sensitivity / input impedance300 mV / 70 kΩ
analog output level / load impedance1.2 V / 3.2 kΩ
digital input, optical (wave length 660 nm)- 15 dBm ~ - 21 dBm
General Specifications IconGeneral Specifications
power consumption14 W
dimensions (width)200 mm (7 - 7 / 8")
dimensions (height)77 mm (3 - 1 / 16")
dimensions (depth)247 mm (9 - 3 / 4")
weight (net)2.1 kg (4.6 lb)

Summary

Before Applying Power

UK Power Supply and Plug

Specifics on the UK mains plug, fuse replacement, and wiring instructions.

General Safety Warnings

Essential warnings regarding electric shock, moisture, and symbol explanations.

Important Safeguards

Power Sources and Electrical Safety

Guidelines on power sources, plug use, and preventing electrical hazards.

Ventilation and Environmental Protection

Ensuring proper ventilation and protecting the unit from environmental factors.

Magnetic Fields and Cleaning

Advice on avoiding magnetic fields and proper cleaning procedures.

Important Safeguards (Continued)

Appliance Placement and Hazard Prevention

Safety tips on appliance placement, protection from lightning, and handling abnormal smells.

Service, Overloading, and Attachments

Guidance on servicing, preventing electrical hazards from outlets, and using attachments.

Before Operation

Unpacking the Unit

Instructions for unpacking the unit and checking for shipping damage.

Accessories Checklist

List of included accessories to verify upon unpacking.

USA Regulatory Information

Specific compliance information for the USA regarding laser product safety.

Special Features

Convenient Title Search

Ability to search for music tracks on a Mini Disc by their registered titles.

High-Quality Playback/Recording

Details on the unit's 1-bit DAC and optical input for high-fidelity audio.

Simplified CD Recording (O.T.E.)

Functionality for recording CD tracks with one-touch operation when linked with a CD player.

Convenient Editing Features

Overview of editing capabilities like reordering, dividing, combining, and erasing tracks.

CD-TEXT Display

Displaying text information from CDs, such as disc and track titles.

Safety Precautions

Installation Position and Dust Control

Guidance on unit placement to minimize vibration and prevent dust ingress.

Memory Backup and Copyright Notice

Information on memory retention, copyright warnings, and condensation precautions.

CD-TEXT Information

Explanation of the CD-TEXT standard and its use with the MD unit.

Handling of Mini Disc

Disc Handling and Storage

Proper methods for handling, cleaning, and storing Mini Discs to prevent damage.

Dust Countermeasure

How to prevent dust from entering the disc cartridge during operation.

Transportation and Movement Precautions

Steps to take before transporting or moving the unit to prevent damage.

Maintenance of the Unit

Instructions for cleaning the unit's exterior and avoiding contact cleaners.

MD System

MD System Features

Overview of the Mini Disc system's capabilities, including random access and recording time.

Playback-only Mini Disc

Description of MDs used solely for playback, similar to CDs.

Recordable Mini Disc

Explanation of how recordable MDs use magneto-optical technology for recording.

MD System (Continued)

High-Efficiency Coding (ATRAC)

Explanation of ATRAC technology for compressing audio data and enabling longer recording times.

Sound Sensitivity and Masking Effect

How audio frequencies are perceived by the human ear and the masking effect.

Sound-Skip Prevention Memory

How the unit uses memory to prevent audio interruptions during playback, even with vibration.

System Connections

Connection Diagram

Visual guide showing how to connect the MD unit to other components like CD players.

Digital Input Jacks

Information on using the DIGITAL IN (OPTICAL) jacks for audio input.

Important Connection Notes

Key considerations for connecting cords firmly and safely, including unplugging the power cord.

System Connections (Continued)

Optical Fiber Cable Connection

Specific instructions for connecting and handling the optical fiber cable for digital audio transmission.

System Control Cord Connection

Procedure for plugging and unplugging the system control cord for integrated operation.

System Operation Features

How connecting via system control cord enables easy operation and timer functions.

Names and Functions of Parts

Display and Main Unit Controls

Identification and explanation of indicators, displays, and buttons on the main unit.

Remote Control Sensor

Location of the sensor for receiving signals from the remote control.

Main Unit Buttons and Functions

Detailed explanation of each button's function on the main unit (e.g., Record, Play, Stop).

Standby Mode

Explanation of the standby mode and its implications for unit operation and memory backup.

Names and Functions of Parts (Continued)

Remote Control Unit Layout

Diagram and overview of the remote control unit's buttons and their functions.

Program Operation Keys

Functions of keys related to programming tracks, character input, and checking contents.

Basic and Applied Operation Keys

Explanation of keys for basic playback, recording, and advanced editing operations.

Display/Recording Operation Keys

Keys for controlling display modes and initiating recording functions.

Numeric and Title Input Keys

Usage of numeric keys for track selection and title input operations.

Operation of Remote Control Unit

Loading Batteries

Step-by-step guide for inserting batteries into the remote control unit.

Remote Control Operation

How to turn the unit on/off and operate it using the remote control.

Reference Operating Range

Diagram illustrating the optimal angle and distance for remote control operation.

Remote Operation Notes

Important notes regarding battery life, remote range, and potential interference.

Playback of Mini Disc

Playing Tracks in Order

Procedure for playing tracks sequentially from track number 1.

Loading a Mini Disc

Steps for correctly inserting a Mini Disc into the unit for playback.

Starting Playback

How to initiate playback and what the display indicates during the process.

Playback of Mini Disc (Continued)

Playback from Desired Track

Instructions for selecting and playing specific tracks by number or intermediate position.

Listening in Random Order

How to enable and use random playback mode for varied listening.

Monaural Mode Playback

Information on playing discs recorded in monaural mode and its impact on playback time.

Playback of Mini Disc (Continued)

Skipping Tracks

Methods for skipping tracks forward or backward during playback.

Searching in a Track

Using the cursor keys to search for specific points within a track.

Pausing and Stopping Playback

How to temporarily pause and completely stop the disc playback.

Ejecting the Disc

Procedure for safely removing the Mini Disc from the unit.

Playback of Mini Disc (Continued)

Searching by Title (TITLE SEARCH)

Steps to find and play tracks using their assigned titles.

Title Search Operation

How the search function displays titles and track numbers.

Programming

Programming Tracks in Order

Step-by-step guide to creating a custom playback sequence of tracks.

Selecting Track Numbers

How to input desired track numbers for programming using numeric keys.

Setting Track Input

Finalizing the input of a track number into the program sequence.

Starting Programmed Playback

Initiating playback of the programmed track order.

Programming (Continued)

Adding Tracks to Program

Procedure for adding more tracks to an existing program sequence.

Checking Program Order

How to review the sequence of tracks in the current program.

Clearing Program Tracks

Methods for deleting specific tracks or the entire program from memory.

Programming (Continued)

Repeated Playback of Programmed Tracks

How to set the unit to repeat only the programmed tracks.

Repeated Playback of Entire Disc

Instructions for setting the unit to repeat the entire Mini Disc.

Stopping Repeated Playback

How to disable the repeat playback function.

Recording (Analog Input)

Analog Recording Preparation

Steps before analog recording, including disc preparation and time checks.

Analog Recording Setup

Selecting analog stereo or mono modes for recording.

Track Number Assignment

Choosing between automatic (AUTO) or manual (MANUAL) track numbering.

Adjusting Recording Level

How to set and adjust the input recording level for optimal sound quality.

Recording (Analog Input) (Continued)

Starting and Pausing Recording

Initiating the recording process and using the pause function.

Ejecting the Mini Disc After Recording

Procedure for safely ejecting the disc after recording is complete.

AUTO/MANU. Key Function

Detailed explanation of the AUTO/MANUAL key for track numbering during recording.

Recording (Digital Input)

Digital Recording Preparation

Steps for preparing digital recording, including CD input selection and disc setup.

Selecting Digital Input

Choosing between DIGITAL 1 or DIGITAL 2 inputs for digital sources.

Digital Track Numbering

Selecting AUTO or MANUAL mode for track numbering during digital recording.

Starting Digital Recording

Initiating the digital recording process and understanding potential display messages.

Recording (Digital Input) (Continued)

Playing the CD Player

Ensuring the source CD player is ready for recording.

Ejecting Disc After Digital Recording

Procedure for ejecting the Mini Disc after digital recording is complete.

Pausing and Stopping Digital Recording

How to pause and resume recording, or stop it entirely.

Using the MONITOR Key

How to monitor the sound from connected digital equipment or the REC INPUT source.

Recording (Digital Input) (Continued)

Digital Recording Restrictions

Conditions where digital recording is not possible, such as SCMS or UNLOCK.

Sampling Frequency Information

Details on common digital sampling frequencies and the unit's conversion capabilities.

SCMS Explained

Explanation of the Serial Copy Management System for copyright protection.

Simplified CD Recording

Preparation for Simplified Recording

Steps to connect a CD player and prepare the Mini Disc for synchronized recording.

Recording a Single CD Track (O.T.E.)

How to record a single track from a CD using the One Touch Edit function.

Recording All CD Tracks (O.T.E.)

Procedure to record all tracks from a CD using the One Touch Edit function.

Synchro Recording with CD Player

Simultaneous recording and playback between MD and CD player for uninterrupted transfer.

Changing the Displayed Contents

TIME DISPLAY Key Function

How to switch between different time display modes (elapsed, remaining, etc.).

TEXT DISPLAY Key Function

How to display CD-TEXT information (disc/track titles) from a connected CD player.

Editing

Selecting Editing Functions

Overview of available editing operations for Mini Discs.

Reordering Tracks (TRACK MOVE)

How to change the order of tracks on the disc.

Dividing and Combining Tracks

Functions for splitting a track or merging two tracks into one.

Erasing Tracks (TRACK ERASE)

Methods for erasing single tracks, multiple tracks, or the entire disc.

Scrolling the Display

How to scroll text on the display for easier viewing during input operations.

Editing (Continued)

Changing Track Order (TRACK MOVE)

Detailed steps for moving a track to a desired position and renumbering surrounding tracks.

Selecting Moving Destination

How to choose the new track number for the item being moved.

Editing (Continued)

Executing Track Reordering

Finalizing the track movement operation and understanding execution results.

Ejecting Disc After Editing

Procedure for ejecting the Mini Disc after editing operations are complete.

Cancelling Edited Contents

How to revert edited changes before the disc is removed.

Image of Track Moving

Visual representation of how tracks are moved and re-arranged.

Editing (Continued)

Moving Several Tracks (QUICK MOVE)

Procedure for moving multiple tracks simultaneously to a new sequence.

Selecting Tracks for Quick Move

How to select the specific tracks to be moved as a group.

Editing (Continued)

Executing Quick Move Operation

Finalizing the movement of multiple selected tracks and understanding the results.

Image of Moving Several Tracks

Visual illustration of tracks being moved together.

Editing (Continued)

Dividing a Track (TRACK DIVIDE)

How to split a single track into two at a specific point.

Selecting Division Point

Choosing the exact position within a track to perform the division.

Previewing Division Point

Using the preview function for fine-tuning the track division point.

Editing (Continued)

Executing Track Division

Finalizing the track division operation and understanding the outcome.

Image of Track Division

Visual representation of a track being divided into two parts.

Image of Preview

Visuals showing the preview function for track division adjustment.

Editing (Continued)

Combining Tracks (TRACK COMBINE)

How to merge two tracks into a single track.

Selecting Tracks for Combining

Choosing the tracks to be combined and setting the operation.

Editing (Continued)

Executing Track Combine Operation

Finalizing the track combining process and understanding the results.

Image of Track Combination

Visual representation of tracks being combined into one.

Editing (Continued)

Erasing Several Tracks (QUICK ERASE)

How to erase multiple tracks at once from the Mini Disc.

Selecting Tracks for Erasure

Choosing specific tracks to be erased using the QUICK ERASE function.

Deleting All Titles (ALL ERASE)

Procedure to erase all titles and tracks on the disc.

Editing (Continued)

Executing Track Erasure

Finalizing the erasure of selected tracks and understanding the outcomes.

Image of Erasing Tracks

Visuals illustrating the process of erasing tracks, either individually or multiple at once.

Editing (Continued)

Erasing a Single Track (TRACK ERASE)

How to erase one specific track during playback.

Confirming Track Erasure

Steps to confirm and execute the erasure of a single track.

Editing (Continued)

Erasing Part of a Track

Using TRACK DIVIDE and TRACK ERASE to remove a segment from a track.

Image of Erasing Track Segments

Visuals showing how to divide a track and then erase the unwanted segment.

How to Edit Titles

Activating Title Input Mode

Entering the mode for editing disc, track, or preset titles.

Selecting Title Type

Choosing whether to edit the disc title, track titles, or preset titles.

Inputting Titles

Information on the total number of characters allowed for titles and inputting them.

How to Edit Titles (Continued)

Selecting Character Groups

Navigating through character groups (A-Z, a-z, 0-9, symbols) for title input.

Selecting Characters and Inputting Titles

Choosing individual characters and entering them to form titles.

Executing Title Assignment

Saving the entered title into memory and completing the assignment.

How to Edit Titles (Continued)

Changing or Deleting Titles

Procedures for modifying or removing existing titles character by character.

Selecting Character to Change

Moving the cursor to the character that needs to be edited or deleted.

Selecting Overwrite/Insert Mode

Choosing between replacing characters or inserting new ones.

How to Edit Titles (Continued)

Executing Title Change or Deletion

Finalizing title edits and saving the changes.

Preset Title Usage

Information on using and modifying preset titles for efficiency.

Preset Title Input Examples

Examples of changing preset titles and adding titles to tracks.

CD Text Editing

Copying CD Text to MD

Steps to copy text information from a CD-TEXT disc to the MD.

Recording with Text Copying

Procedure for recording while simultaneously copying text data.

In Case of Difficulty

Operation Reset Procedure

How to reset the microprocessor to resolve malfunctions or erroneous displays.

Symptoms Related to MD Standard

Troubleshooting common issues arising from MD standard limitations.

In Case of Difficulty (Continued)

Displayed Messages and Actions

Explanation of common error messages and the corresponding corrective actions.

In Case of Difficulty (Continued)

Other Symptoms and Remedies

Troubleshooting for other issues like no sound output, recording problems, or distorted sound.

Specifications

Format Specifications

Technical details on the MD system format, laser, recording method, and playback rotation.

Conversion and Digital Performance

Specifications for D/A conversion, A/D conversion, and digital audio performance.

General Specifications

Details on power consumption, dimensions, and weight of the unit.

Canadian Regulations

Information regarding compliance with Canadian Interference-Causing Equipment Regulations.

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