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Kenwood DM-SG7 User Manual

Kenwood DM-SG7
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DM-SG7(EN)
49
In case of difficulty
In case of difficulty
What appears to be a malfunction may not always be serious. If your unit should not perform as expected,
consult the table below to see if the problem can be corrected before seeking help from your dealer or
service representative.
Operation to reset
The microprocessor may fall into malfunction (impossibility
to operate erroneous display, etc.) when the power cord is
unplugged while power is ON or due to an external factor.
In this case, execute the following procedure to reset the
microprocessor and return it to normal condition.
Unplug the power cord from the power outlet
then, while holding the eject (0) key depressed,
plug the power cord again.
Symptoms related to MD standard
Symptom
More than 255 tracks (track No. 256 or more) cannot be
recorded. (There may be also cases in which recording is
impossible while the track number is less than 256.)
In such a case, the REMAIN time display shows “0:00”.
Cause
“DISC FULL” is displayed while the disc still has a
remaining recordable time.
Please note that resetting the microprocessor clears
the contents stored in, it returns the microprocessor
to the condition when it left the factory.
The remaining time display becomes “0:00” when the
actual total remaining time of the Mini Disc is less than 12
seconds. The recordable time display changes when the
total time of the erased track exceeds 12 seconds.
When a Mini Disc has been subjected to repeated editing,
the remaining time may not increase even after a short
track has been erased.
The recordable time does not increase after a short
track has been erased.
Tracks cannot be combined.
A track created as a result of an editing operation may
sometimes be impossible to be combined with another
track.
The total of the recorded time and recordable time
does not coincide with the total recording time of
the MD (60, 74 or 80 min.).
As recording is performed on a minimum recording basis
of 2 seconds, the displayed time may not coincide with
the consumed disc capacity.
Sound is interrupted when a track created by edit-
ing is subjected to fast forward or fast backward
operation.
Sound interruption may occur due to a combination of
various factors, and it is not a malfunction.
Tracks are not numbered correctly.
A short track may be created depending on the contents
of the recorded source (CD, for example).
The period in which “READING” is displayed is
abnormally long.
“READING” is displayed for a longer period than usual
when a brand-new recordable Mini Disc (a virgin disc) is
loaded.
The displayed time is incorrect when a monaurally-
recorded Mini Disc is played.
This is because the monaural recording and stereo re-
cording use different formats, and not a malfunction.
The total number of characters used in the titles is
less than 1792 characters.
As the title recording areas are used on a per-7-character
basis, the total number of input characters may be less
than 1792.

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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)

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