Sharp MP3 Player MD MT90 User Manual

Thank you for purchasing this SHARP product.  
For the best performance, read this manual carefully.  
It will guide you in operating your SHARP product.  
PORTABLE MINIDISC  
RECORDER  
MODEL  
-
MD MT90  
OPERATION MANUAL  
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Contents  
Important Introduction  
Advanced Features  
Special Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5  
Names of Controls and Indicators . . . . . . . . . . . . . 6-7  
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Changing Default Settings . . . . . . . . . . . . . . . . . . . . 31  
Titling a MiniDisc . . . . . . . . . . . . . . . . . . . . . . . . . 32-35  
Editing a Recorded MiniDisc . . . . . . . . . . . . . . . 36-38  
Listening through Another System . . . . . . . . . . . . . 39  
Preparation  
Inserting a MiniDisc . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11  
References  
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Other Features and Caution . . . . . . . . . . . . . . . . . . . 40  
MiniDisc System Limitations . . . . . . . . . . . . . . . . . . 41  
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 42-43  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 44-45  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45  
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 46-47  
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Basic Operation  
Recording . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-13  
Playback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-15  
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Useful Features  
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CONSUMER LIMITED WARRANTY . . . . . Back cover  
Advanced Playback . . . . . . . . . . . . . . . . . . . . . . . 16-17  
Advanced Recording . . . . . . . . . . . . . . . . . . . . . . 18-22  
Recording from a Microphone. . . . . . . . . . . . . . . 23-25  
Checking Displays . . . . . . . . . . . . . . . . . . . . . . . . 26-27  
Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-29  
Hold Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30  
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Special Notes  
z It is the intent of Sharp that this product be used in full  
compliance with the copyright laws of the United  
States and that prior permission be obtained from  
copyright owners whenever necessary.  
FOR YOUR RECORDS  
For your assistance in reporting this unit in case of  
loss or theft, please record below the model number  
and serial number which are located on the bottom of  
the unit.  
Caution - use of controls or adjustments or per-  
formance of procedures other than those specified  
herein may result in hazardous radiation exposure.  
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Please retain this information.  
Model number  
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z "BATTERY DISPOSAL"  
Serial number  
CONTAINS NICKEL-METAL HYDRIDE BATTERY.  
MUST BE DISPOSED OF PROPERLY. CONTACT LO-  
CAL AGENCIES FOR INFORMATION ON RECY-  
CLING AND DISPOSAL PLANS IN YOUR AREA.  
z US and foreign patents licensed from Dolby Laborato-  
ries.  
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Date of purchase  
Place of purchase  
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z The letters in brackets contained in the model number  
indicate the color of the product only. Operation and  
specifications are unaffected.  
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Note:  
WARNING:  
This equipment has been tested and found to comply  
with the limits for a Class B digital device, pursuant to  
Part 15 of the FCC Rules.  
These limits are designed to provide reasonable protec-  
tion against harmful interference in a residential installa-  
tion.  
FCC Regulations state that any unauthorized changes or  
modifications to this equipment not expressly approved  
by the manufacturer could void the user's authority to  
operate this equipment.  
This equipment generates, uses, and can radiate radio  
frequency energy and, if not installed and used in accord-  
ance with the instructions, may cause harmful interfer-  
ence to radio communications.  
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However, there is no guarantee that interference will not  
occur in a particular installation.  
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If this equipment does cause harmful interference to  
radio or television reception, which can be determined by  
turning the equipment off and on, the user is encouraged  
to try to correct the interference by one or more of the fol-  
lowing measures:  
Not  
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z Reorient or relocate the receiving antenna.  
z Increase the separation between the equipment and  
receiver.  
z Connect the equipment into an outlet on a circuit dif-  
ferent from that to which the receiver is connected.  
z Consult the dealer or an experienced radio/TV techni-  
cian for help.  
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Names of Controls and Indicators  
Main unit  
1. 5V DC Input Jack (10)  
2. Optical/Line Input Jack (10, 11)  
3. Microphone Input Jack (23)  
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4. Bass/Delete Button (15, 33)  
5. Edit/Auto Mark/Time Mark Button (21, 25, 32)  
6. Display/Character Select Button (26, 32)  
7. Mode/Charge Button (17, 28)  
8. Record/Track Mark Button (12, 21)  
9. Volume/Cursor/Fast Forward/Fast Reverse/  
Recording Level/Name Select Button  
(12, 15, 16, 32, 33)  
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10. Play/Pause Button (12, 15)  
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11. Stop/Power Off/Hold Button (13, 15, 30)  
12. Enter/Fast Play/Synchro Button (17, 18, 20)  
13. Remote Control/Headphones/Line Output Jack  
(14, 39)  
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14. Open Lever (9)  
15. Battery Cover (28)  
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Display panel  
1. Level Meter (12)  
2. Record Indicator (12)  
3. Remaining Recording Time Indicator (26)  
4. Monaural Long-Play Mode Indicator (19)  
5. Repeat Indicator (17)  
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6. TOC Indicator (13)  
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7. Synchro Recording Indicator (18)  
8. Disc Mode Indicator  
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9. Disc Name Indicator (26)  
10. Track Name Indicator (26)  
11. Total Track Number Indicator (26)  
12. Fast Play Indicator (17)  
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13. Battery Indicator (27)  
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14. Random Indicator (17)  
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15. Track Number Indicator (26)  
16. Character/Time Information Indicator  
Contr  
Remote control unit  
1. Headphones Jack (14)  
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2. Bass/Delete/Track Mark Button (15, 21, 33)  
3. Volume Down/Cursor Button (15, 33)  
4. Volume Up/Cursor Button (15, 33)  
5. Hold Switch (30)  
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6. Play/Pause Button (12, 15)  
7. Fast Reverse/Recording Level Down/Name Select  
Button (12, 16, 32)  
8. Fast Forward/Recording Level Up/Name Select  
Button (12, 16, 32)  
9. Stop/Power Off Button (13, 15)  
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Precautions  
Important  
Storing the unit  
z Do not wear your headphones when you are crossing  
streets or near traffic.  
Avoid using or leaving the unit in the following  
places.  
z Do not use your headphones while  
driving a motor vehicle, it may cre-  
ate a traffic hazard and may be ille-  
gal. Remember to obey all of the  
safety rules in your area.  
z Places exposed to direct sunlight for  
many hours (especially in cars with  
the doors and windows closed) or  
near heaters. (The cabinet may de-  
form, change color or the unit may  
malfunction.)  
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z Places exposed to excessive dust.  
z Places exposed to water.  
z Do not play the unit at a high volume. Hearing experts  
advise against extended listening at high volume lev-  
els.  
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z If you experience ringing in your ears, reduce the vol-  
ume or discontinue use.  
z Places where temperatures are ex-  
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z This portable MD should only be used within the range  
of 32°F - 104°F (0°C - 40°C).  
cessively high or low.  
eacut  
To avoid accidental electric shock or other possible  
problems, observe the precautions listed below.  
z Do not disassemble or modify the unit.  
z Do not drop or subject the unit to shock.  
z Do not use the unit near open flames.  
z Places (bathrooms) where the humid-  
ity is extremely high.  
z Places with strong magnetic fields  
such as TVs or loudspeakers.  
z Do not spill liquid on the unit.  
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z Do not use an external power supply, other than the  
5V DC supplied with this unit, as it may damage it.  
z SHARP is not responsible for damage due to improper  
use. Refer all servicing to a SHARP authorized serv-  
ice center.  
z Places exposed to vibration.  
z Places where sand can easily enter  
the inside of the unit (beaches etc.).  
z If the unit is used near radio tuners or TVs, noise and/  
or picture interference may result. If you experience  
these problems, move the unit away from such  
devices.  
z It is not recommendable to put the MiniDisc into a rear  
pocket, as this may damage the product when sitting.  
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Inserting a MiniDisc  
1 Slide the OPEN lever to release the com-  
partment door.  
2 Lift it up.  
3 Insert a MiniDisc as shown.  
4 Close the compartment door.  
sc-  
Notes:  
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z Do not place the MiniDisc under the holder.  
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MiniD  
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z If any resistance is felt, do not force the MiniDisc into  
the unit, as it may cause damage to the unit. If resist-  
ance is felt, remove the MiniDisc and reload it.  
z The lid cannot be opened if "TOC" is displayed.  
Refer to the instruction on page 13.  
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Connections  
You can record your favorite CDs or tapes to MD.  
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Recording  
3 Press the  
or  
button to adjust the re-  
cording level.  
Analog recording  
Adjust the recording level so that the maximum  
sound volume from the source makes the reading  
swing somewhere between 4 dB and 0 dB.  
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Digital recording  
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You can adjust the level in 1dB increments within  
the range of +12 - 12dB.  
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Once you adjust the digital recording level, the set-  
ting remains even after the recording stops. (For  
cancellation instructions, see page 31.)  
1 Press the REC button.  
4 Press the PAUSE button on the stereo sys-  
tem to enter the playback pause mode.  
2 Begin playback on the stereo system con-  
Here you can search for the track to record.  
nected to this portable MD.  
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About the TOC  
5 Press the PLAY/PAUSE button to start the  
After any recording or editing function, "TOC" (Table Of  
Contents) is displayed. To finalise the recording or editing  
function, press the /:OFF button. During this process,  
"TOC" will flash and "TOC EDIT!" will be displayed. Dur-  
ing any recording or editing function, the MiniDisc unit lid  
is locked, and the MiniDisc cannot be removed until the  
process is finalised.  
MiniDisc unit recording.  
6 Begin playback on the stereo system, and  
the output will be recorded.  
To interrupt recording  
Press the PLAY/PAUSE button.  
z To resume recording, press the PLAY/PAUSE button  
again.  
z The track number will be increased by one each time  
the recording is interrupted.  
Warning:  
ion  
If the power is removed (Battery/AC adaptor) while "TOC"  
is displayed, the MiniDisc unit lid will remain locked until  
the battery/main power is restored and the unit is turned  
on. Your new recordings or edited changes will be lost  
and your MiniDisc may become unusable.  
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To stop recording  
Press the /:OFF button.  
Caution:  
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z When recording stops, "TOC" appears. While "TOC"  
appears, the MiniDisc recorded contents have not yet  
been updated.  
z To prevent the new recording from being lost, it is not  
possible to remove the MiniDisc while "TOC" is dis-  
played.  
While "TOC" or "TOC EDIT!" is displayed, follow the  
instructions below.  
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Do not jerk or bump the unit.  
Do not unplug the AC adaptor.  
Do not remove the rechargeable battery or an alka-  
line battery.  
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Do not subject the unit to shock.  
Otherwise, tracks may not be recorded properly.  
To update the recorded contents of the  
MiniDisc  
Press the /:OFF button while in the stop mode.  
The power turns off after recorded contents have been  
updated on the MiniDisc.  
Notes:  
z Changing the volume level while recording does not  
affect the recording.  
z You cannot adjust the bass level while recording.  
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Playback  
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Volume control  
Press the VOL+ button to increase the volume and the  
VOL- button to decrease the volume.  
1 Insert the headphones plug firmly into the  
headphones jack on the remote control  
unit.  
2 Plug the remote control into the REMOTE  
Bass control  
Each time the BASS button is pressed, the tone will be  
switched as follows.  
jack on the unit.  
3 Insert a MiniDisc (page 9).  
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BASS 1  
Emphasized slightly  
Emphasized more  
Emphasized fully  
Canceled  
4 Press the PLAY/PAUSE button.  
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BASS 2  
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Playback starts automatically with a playback only  
MiniDisc or a MiniDisc which is protected against  
accidental erasure (Auto-play function).  
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BASS 3  
BASS OFF  
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Notes:  
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To interrupt playback  
z If power failure occurs while playing a disc using the  
AC adaptor, disconnect it from the AC outlet. Other-  
wise, playback may start automatically when electricity  
resumes.  
Press the PLAY/PAUSE button.  
To resume playback, press the PLAY/PAUSE button  
again.  
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z If you connect the AC adaptor without installing the  
rechargeable battery, playback may start automati-  
cally. Be sure to turn off the power.  
z Reduce the volume before starting to play. MiniDiscs,  
compared to ordinary cassette tapes, have very little  
noise. If the volume is adjusted according to your  
usual expectations of noise, high volume may damage  
your hearing.  
z The sound escaping from your headphones may  
annoy people around you. In particularly crowded  
places (such as on trains or buses), reduce the vol-  
ume.  
To stop playback  
Press the /:OFF button.  
If the unit is not operated for at least 2 minutes while in  
the stop mode, the power will shut off automatically.  
To turn off the power  
Press the /:OFF button while in the stop mode.  
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Advanced Playback  
To locate the beginning of a track  
To move to the beginning of the next track:  
Press the  
To restart the track being played:  
Press the button during playback.  
button during playback.  
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To locate the next track:  
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Press the  
button while the unit is stopped.  
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To locate the previous track:  
To locate the desired portion  
a
a
Press the  
button while the unit is stopped.  
For audible fast forward:  
F
Press and hold down the  
For audible fast reverse:  
Press and hold down the  
button during playback.  
z To skip a number of tracks at one time, press the  
or  
button repeatedly until the desired track  
euf  
number is shown.  
dav  
button during playback.  
z When you press the PLAY/PAUSE button, playback  
starts from the beginning of the track.  
z Normal playback will resume when the  
button is released.  
or  
z When the end of the last track is reached during fast  
forward, the unit will enter the pause mode. When  
the beginning of the first track is reached during fast  
reverse, the unit will enter the playback mode.  
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Random play or repeat play  
During playback, press the MODE/CHRG button repeat-  
edly to select the playback mode.  
RANDOM  
RANDOM  
Random play  
Repeat play of tracks in random order  
Repeat play of all of the tracks  
Repeat play of a single track  
Normal playback  
1
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No display  
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To play at double speed  
Press the ENTER/SYNC button while  
recorded in the monaural long-play mode is being played.  
Notes:  
z If the playback mode is selected while stopped, press  
the PLAY/PAUSE button to start playback.  
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MiniDisc  
F
z When "TOC" is displayed, random play or repeat play  
is impossible.  
efu  
z In random play the unit will select and play tracks auto-  
matically. (You cannot select the order of the tracks.)  
After all of the tracks have been played once each in  
random order, the unit will stop automatically.  
z During random, random repeat, or single track repeat  
play, you can forward or reverse the MiniDisc only  
within the track being played.  
z During random play, the unit cannot find the beginning  
of any track which has been played.  
z Repeat play lasts until you stop the unit.  
dva  
z If a track recorded in the stereo mode is reached dur-  
ing fast playback, the fast playback mode will be can-  
celed.  
z Depending on the contents recorded on a MiniDisc, it  
may be difficult to hear them.  
To interrupt fast playback  
Press the PLAY/PAUSE button during playback.  
When the PLAY/PAUSE button is pressed again, the unit  
will resume fast playback.  
To return to normal playback  
Press the ENTER/SYNC button.  
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Advanced Recording  
Playback sound-actuated recording  
Recording automatically starts or pauses by detecting  
sound from the stereo system (Synchronized recording).  
3 Press the  
or  
button to adjust the re-  
cording level. (See page 12.)  
4 Press the PAUSE button on the stereo sys-  
tem to enter the playback pause mode.  
Select the starting point for your recording and  
press the PAUSE button.  
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5 Press the ENTER/SYNC button.  
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z "SYNC" will be displayed.  
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z To cancel the operation, press the /:OFF but-  
ton.  
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6 Begin playback on the stereo system. Re-  
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cording will begin automatically.  
euf  
To interrupt recording  
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z When the stereo system is stopped, the unit will enter  
the synchro recording pause mode. When playback is  
resumed, the recording will be resumed.  
z If a silence lasts for 3 seconds or more, the recording  
will be paused (the pause function does not work for  
approximately 10 seconds after a recording starts).  
When the unit receives sound again, recording auto-  
matically starts.  
z A new track number is created when the recording  
resumes.  
1 Press the REC button.  
2 Begin playback on the stereo system con-  
nected to this portable MD.  
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Long-play recording  
1 Press the MODE/CHRG button while the  
When recording in the monaural long-play mode, the  
available recording time will be doubled. Monaural long-  
play recordings can be replayed at double speed, see  
page 17.  
recording is paused.  
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Stereo mode  
Monaural long-play  
mode  
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2 Start recording.  
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Notes:  
z When the unit is stopped after a recording has been  
made in this mode, the recording mode will return to  
the stereo mode automatically.  
-Ad  
z If input is from a stereo source, the sounds from the  
left and right channels will be combined.  
z Although the monitor sound you hear in the head-  
phones while recording is in stereo, recording will be  
monaural.  
z MiniDiscs recorded in the monaural long-play mode  
may not play on other MiniDisc players.  
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Advanced Recording (continued)  
To start recording from the middle of a  
1 During playback, press the PLAY/PAUSE  
track  
button at the point where you want to be-  
gin recording.  
You can erase a portion of a track and make a new  
recording.  
All of the tracks that follow the newly recorded track will  
be erased.  
2 Press the REC button.  
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To cancel the operation, press the /:OFF button.  
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3 Press the ENTER/SYNC button.  
All of the tracks and track names will be erased, fol-  
lowing the point where the playback is paused.  
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4 Press the PLAY/PAUSE button.  
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Recording will start.  
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Note:  
To keep a track after the point you want to make a new  
recording, move the track and then make recording after  
that point. (See "Editing a Recorded MiniDisc", page 38.)  
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To create your own track numbers  
To prevent recorded MiniDiscs from  
You can create your own track numbers at any point.  
being erased accidentally  
Slide the accidental erase prevention tab, located on the  
side of the MiniDisc, in the direction indicated by the  
arrow.  
The MiniDisc will then be protected against accidental  
erasure.  
While recording, press the REC button at the point  
where you want to create track numbers.  
The track number will be increased by one.  
z One track number will be added every time the REC  
button is pressed.  
z The BASS button on the remote control can also be  
used to add track numbers.  
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Recording tracks as a single track  
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You can record several pieces of music as a single track  
by disabling the auto marker function.  
To add a recording to such a MiniDisc, slide the acciden-  
tal erase prevention tab back to its original position.  
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When a recording is paused or while recording...  
Press the EDIT button.  
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Helpful tip when attaching a label  
When attaching a label to a MiniDisc cartridge, be sure to  
note the following. If the label is not attached properly, the  
MiniDisc may jam inside the unit and it may not be possi-  
ble to remove it.  
-Ad  
Note:  
When making digital recordings using a CD player or an  
MiniDisc player, track numbers will be created automati-  
cally regardless of the setting of the auto marker function.  
z If the label peels off or partially lifts  
away, replace it with a new one.  
z Do not put a new label on top of an ex-  
isting one.  
z Attach the label only in the specified  
location.  
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Advanced Recording (continued)  
z When recording, if a programmed playback is per-  
formed by the source or playback is performed by  
selecting tracks manually, the MiniDisc track numbers  
may not be the same as on the source.  
z Track numbers may not be created properly, depend-  
ing on the connected stereo system.  
About track numbers  
1. Track numbers are created automatically during re-  
cording via the analog connection when a silence of  
1 second or more is detected (Auto marker function).  
A series of tracks can be recorded as one by disa-  
bling the auto marker function, see page 21.  
About sampling rate converter  
This portable MD incorporates a sampling rate converter,  
which means it can record from digital radios or DAT tape  
recorders.  
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Note for digital recording  
2. When recording from a CD or a MiniDisc using the  
digital connection, track numbers will be created at  
the same points as on the CD or MiniDisc (Synchro  
marker function).  
You cannot copy a MiniDisc that you recorded from digital  
inputs to another MiniDisc or DAT. It is prevented by the  
SCMS (Serial Copy Management System). Recording  
from analog inputs is not affected.  
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First track Second track Third track  
Playback  
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Track A  
Track B  
Track C  
side  
First track Second track Third track  
Track A Track B Track C  
Recording  
side  
z Track numbers may not be created in proper places,  
depending on the source to be recorded from, such as  
signals with noise.  
z The track numbers on the playback side may not  
match the track numbers recorded on the MiniDisc.  
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Recording from a Microphone  
To record from a microphone  
4 Press the  
or  
button to adjust the re-  
cording level.  
Adjust the recording level so that the maximum  
sound volume from the source makes the reading  
swing between ---4 dB and 0 dB.  
e
p
u
c
a
5 Press the PLAY/PAUSE button.  
Recording will start.  
F
o
To interrupt a recording  
efu  
ing  
Press the PLAY/PAUSE button while recording.  
To resume recording, press the PLAY/PAUSE button  
again. The track number will be increased by one each  
time you interrupt a recording.  
-
To stop recording  
Press the /:OFF button.  
1 Connect a stereo microphone to the MIC  
IN jack.  
To write recorded contents on the MiniDisc  
Press the /:OFF button while in the stop mode.  
2 Insert a recordable MiniDisc (page 9).  
3 Press the REC button.  
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Recording from a Microphone (continued)  
About the pause function  
Sound-actuated recording (Mic Syn-  
The unit automatically pauses when the microphone  
does not pick up any sound for 3 seconds or more.  
(The pause function does not work for approximately 10  
seconds after a recording starts.) When the microphone  
picks up sound again, recording starts automatically.  
chronized recording)  
1 Press the REC button.  
2 Press the  
or  
button to adjust the re-  
Notes:  
cording level.  
z While making a mic recording, do not connect any-  
thing to the OPTICAL/LINE IN jack on the portable  
MD.  
e
p
u
c
z To use a microphone, be sure it is a plug-in-power  
type microphone.  
a
-
When a plug-in-power type microphone is plugged in,  
the portable MD will provide power for the microphone's  
operation.  
3 Press the ENTER/SYNC button to select  
F
o
the recording sensitivity.  
-
If a different type of microphone is plugged in, it may not  
operate properly or it may cause the unit to malfunction.  
MIC SYNC H :  
Recording starts when the unit  
d e t e c t s --- 2 4 d B o r m o r e ( T h e unit  
can start recording from quiet  
sounds).  
euf  
ign  
z Insert the plug firmly. If you don't, the recording will not  
be made properly.  
-
MIC SYNC L :  
Recording starts when the unit  
d e t e c t s --- 1 2 d B o r m o r e .  
z Use a microphone with a 1/8" (3.5 mm) diameter  
stereo mini plug.  
z If the unit starts recording too often from low unwanted  
noises, set the microphone input to "MIC SYNC L".  
z Recording sensitivity can be changed while recording.  
4 When a sound, such as person speaking,  
is picked up by the microphone, recording  
will begin automatically.  
24  
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Example: Set to "5 minutes".  
Track intervals  
When recording from the microphone, track numbers will  
be created automatically at regular intervals (default set-  
ting: approximately every 5 minutes). During a mic syn-  
chro recording, the unit pauses when a silence lasts for 3  
seconds or more, and creates a track number.  
During a mic manual recording  
Timed auto marks will be created every 5 minutes.  
Changing intervals between tracks  
e
p
1 When a recording is paused or while re-  
During a mic synchro recording  
If a silence lasts for 3 seconds or more, a timed auto  
mark will be created 5 minutes after the previous mark is  
created.  
u
cording, press the EDIT button repeatedly.  
c
t
F
o
efu  
ing  
e
The interval between marks may vary slightly com-  
pared with the actual recording time.  
Creating track numbers manually  
Press the REC button while recording.  
2 Track numbers will be created automati-  
cally at regular intervals.  
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Checking Displays  
To check the elapsed time and remain-  
To check the remaining recording time  
ing time of the track  
and the total playing time  
During playback, press the DISP button.  
Each time the button is pressed, the display will change  
as follows.  
While in the stop mode, press the DISP button.  
Each time the button is pressed, the display will change  
as follows.  
e
y-s  
u
a
F
 a
euf  
-hCec  
Notes:  
z If the disc name or the track name was not originally  
recorded on the MiniDisc, "NO NAME" will be dis-  
played.  
z Remaining recording time will not be displayed with a  
playback-only MiniDisc.  
z Elapsed playback time and remaining playback time  
may be different from the actual time.  
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To display the playing time of an indi-  
Checking the remaining amount of bat-  
tery level  
vidual track  
The remaining amount of battery level is shown by the  
1 While in the stop mode, press the  
or  
battery indicator (  
) during operation.  
button to display the track number and  
track name.  
e
ys-  
r
a
z When the battery is completely discharged, the bat-  
tery indicator will flash. Recharge the battery or  
replace the alkaline battery with a new one.  
z When the battery has run completely out, "BATT  
EMPTY" will appear. Then, the power will be discon-  
nected automatically.  
2 Press the DISP button to display the play-  
ing time for that track.  
F
i
efu  
Notes:  
-Chec  
z If you use the battery which you stopped charging  
Each time the  
time of the previous or next track will be displayed.  
or  
button is pressed, the playing  
halfway, "  
" may appear. It does not mean that the  
battery is completely charged.  
z The battery indicator will not correctly display the  
remaining capacity for approximately 10 seconds after  
the power has been turned on.  
z When the AC adaptor or a separately available car  
adaptor is used, the battery indicator will not be  
shown.  
z The number of bars shown in the battery indicator may  
increase or decrease, depending on the operation  
being performed. This is normal.  
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Battery Power  
Charging the rechargeable battery  
When the rechargeable battery is used for the first time  
or when you want to use it after a long period of disuse,  
be sure to charge it fully.  
1 Insert the rechargeable battery.  
A rechargeable battery other than the one supplied  
or the optional one (AD-N70BT) cannot be charged.  
e
-
2 Plug the AC adaptor into the AC outlet, and  
u
then insert the plug on the other end into  
the DC IN 5V jack.  
w
t
3 Press the MODE/CHRG button.  
F
t
"
" will flash, and battery will begin charging.  
euf  
-aB  
z After the rechargeable battery is charged or used, it  
will get slightly warm. This is normal.  
z When the portable MD is turned on or operating, the  
battery will not be charged.  
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About charging time  
Using with the rechargeable or alkaline  
After about 3.5 hours have passed, " " will  
go out. The battery charging is about 90% com-  
plete.  
To charge the battery fully, continue charging for about 2  
more hours. In this case, you do not need to press the  
MODE/CHRG button. Even if the MODE/CHRG button is  
battery  
1 Disconnect the AC adaptor.  
2 Insert the rechargeable bat-  
tery or alkaline battery from  
the (+) marked side.  
pressed, "  
" will not appear.  
Notes:  
s
z Charge the battery within the range of 41°F - 95°F  
(5°C - 35°C).  
Use a commercially available LR6,  
"AA" size alkaline battery.  
-
u
z Charging is completed when "  
" does not blink  
w
t
when you plug in the AC adaptor and press the  
MODE/CHRG button.  
Notes:  
z Setting the volume level to "0" while recording with the  
rechargeable or an alkaline battery reduces the bat-  
tery drain.  
F
z The unit can be left in the charging state after it is  
completed.  
t
z When you do not use the unit for hours, remove the  
battery. (The battery drains gradually even when the  
power is turned off.)  
efu  
-Ba  
Caution:  
z Use the specified battery AD-N70BT only. Do not  
charge a battery (nickel-cadmium, alkaline, etc.) other  
than that specified.  
z Carry the battery in the supplied case.  
z This unit can be used with the AC adaptor when the  
rechargeable or an alkaline battery is in the unit.  
z Do not remove the outer cover of the re-  
chargeable battery. It may cause heat gen-  
eration, fire, or explosion.  
z Do not dip the battery in water, do not dis-  
pose of it in a fire, and do not take it apart.  
Caution:  
Do not use a nickel-cadmium battery.  
z If the rechargeable battery terminal is dirty, charging  
may not start. In such a case, wipe off the dirt with a  
dry cloth.  
z Do not disassemble the battery.  
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Hold Function  
The present operation condition can be kept even if other  
buttons are accidentally pressed in a place such as a  
crowded train.  
e
u
a
F
euf  
-oHldFunction  
If the battery is inserted or the AC adaptor is connected,  
you can set this function even when the power is turned  
off.  
To cancel the hold mode  
Move the HOLD switch away from the safety position  
(the opposite direction of the arrow).  
To cancel the hold mode  
If the hold function is active while the power is turned  
off, the power cannot be turned on by mistake and the  
battery will not be drained.  
Press and hold down the HOLD button for 2 seconds or  
more while the unit is in the hold mode.  
"HOLD OFF" will be shown.  
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Changing Default Settings  
Beep sound  
While in the stop mode ...  
You can eliminate the confirmation sound that beeps  
when you press a button.  
1 With a MiniDisc inserted, press the MODE/  
CHRG button for 2 seconds or more. "SET  
UP" will appear.  
Auto play  
You can make the unit not play automatically when you  
insert a playback-only MiniDisc or an accidental erasure  
protected MiniDisc.  
When you release the button, "BEEP ON" or "BEEP  
OFF" will appear.  
-
e
2 Press the  
or  
button to display the  
Auto power save  
i
u
When the unit is used in a place exposed to much vibra-  
tion, sound skipping can be decreased by canceling the  
auto power save function. (Battery will drain faster.)  
menu.  
S
3 Press the MODE/CHRG button to switch  
items.  
Fea  
What is auto power save function?  
Auto power save function automatically adjusts the sound  
skip memory storage to be from 5 to 10 seconds depend-  
ing on playback conditions, which saves battery power. If  
the MiniDisc unit is used in areas of much vibration, it  
may be necessary to fix the sound skip memory to 10  
seconds "Psave OFF". This will improve performance  
under difficult conditions but uses more power. (When  
the AC/car adaptor is used, the 10 second mode is  
always used.)  
4 Press the /:OFF button.  
e
Default  
n
MENU  
BEEP ON  
(Confirmation sound) BEEP OFF  
SETTING ITEM  
n
BEEP ON*  
Beep  
Silent  
h
A
A-PLAY ON  
(Auto play)  
A-PLAY ON*  
A-PLAY OFF  
Setting  
Canceled  
Digital recording level  
"D.L MODE 1"  
The digital recording level you set will be kept even after  
canceling recording.  
"D.L MODE 2"  
AUTO Psave  
(Auto power save)  
AUTO Psave*  
Psave OFF  
Setting  
Canceled  
D.L MODE 1  
(Digital recording  
level)  
D.L MODE 1*  
D.L MODE 2  
Setting keep  
Canceled  
Every time you cancel recording, the level will return to  
[D.L 0dB].  
(*) indicates default setting.  
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Titling a MiniDisc  
Creating disc and track names  
Load a MiniDisc to be named. A playback-only or record-  
ing prevented MiniDisc cannot be edited.  
3 Press the DISP button repeatedly to select  
the type of characters.  
<Disc name>  
<Track name>  
1
While in the stop  
While in the pause  
mode, press the EDIT mode, press the EDIT  
button to select "DISC button to select  
e
NAME".  
"TRACK NAME".  
r
The first 3 characters in the group of the selected  
characters will be displayed for about 1 second.  
Dsic-  
4 Press the  
or  
button repeatedly to  
Fae  
2 Press the ENTER/SYNC button.  
M
select the letter.  
e
l
n
5 Press the ENTER/SYNC button to enter it.  
z The unit will enter the character input mode.  
A
z To cancel the operation, press the /:OFF but-  
ton.  
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To erase a character  
Press the VOL+ or VOL--- button to move the cursor to the  
character you want to erase, and then press the BASS  
button.  
6 To enter more letters, repeat steps 3 - 5.  
7 When the name has been completely en-  
tered, press the EDIT button.  
To enter a space  
Press the VOL+ button to move the cursor to the right.  
8 "TOC" will be displayed. To write the up-  
e
dated contents to the MiniDisc, press the  
/:OFF button.  
r
You cannot remove the MiniDisc while "TOC" is dis-  
played. "TOC" will not disappear until the recorded  
contents have been updated.  
Disc-  
Space  
Fea  
M
Note:  
Characters (symbols)  
e
One disc name and up to 255 track names can be cre-  
ated per disc (a maximum of 100 characters for the disc  
and each track name and a total of 1,700 characters can  
be entered).  
Capital letters  
i
n
A
B
C
D
E
X
F
Y
G
Z
H
.
I
i
J
/
K
k
L
l
M
m
N
n
O
o
P
p
Q
q
'
R
r
,
,
S
T
U
V
W
Lower-case letters  
a
b
c
d
e
f
g
z
h
.
j
d
s
t
u
v
w
x
y
/
Numbers and symbols  
(
1
2
3
4
5
6
7
8
;
9
<
0
=
!
"
#
$
_
%
`
&
)
+
:
>
,
.
/
?
@
*
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Titling a MiniDisc (continued)  
To add characters  
Stamping titles from another MiniDisc  
1 Put the unit in the character input mode.  
Before stamping  
When there are 2 MiniDiscs on which the same tracks  
are recorded, you can transfer the character information  
(disc and track names) of the master MiniDisc to another  
MiniDisc (for stamping).  
(Perform steps 1 - 2 on page 32.)  
2 P r e s s t h e V O L + o r V O L --- b u t t o n t o m o v e  
the cursor to the right of the character,  
where you want to add a new character.  
e
1. What is a master MiniDisc?  
u
A recordable MiniDisc that contains tracks and charac-  
ter information. (You cannot transfer the information  
from a playback-only MiniDisc.)  
Dsic-  
Fae  
i
3 Select the character to add.  
e
(Perform steps 3 - 4 on page 32.)  
2. What is a MiniDisc for stamping?  
l
n
A MiniDisc that contains the same tracks in the same or-  
der as the master MiniDisc. (Make sure that the total  
number of tracks of the master MiniDisc and the one for  
stamping are the same.)  
4 Press the ENTER/SYNC button.  
5 Press the EDIT button.  
A
6 "TOC" will be displayed. To write the up-  
dated contents to the MiniDisc, press the  
/:OFF button.  
You cannot remove the MiniDisc while "TOC" is dis-  
played. "TOC" will not disappear until the recorded  
contents have been updated.  
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Master MiniDisc operation  
Operation of the MiniDisc for stamping  
1 Insert a master MiniDisc.  
6 Load a MiniDisc for stamping.  
Do not mistake the master MiniDisc for the target  
one.  
e
2 While in the stop mode, press the EDIT  
button to select "NAME STAMP".  
u
7 Press the ENTER/SYNC button.  
Disc-  
Fea  
M
3 Press the ENTER/SYNC button.  
e
The unit will finish recording the character informa-  
tion and enter the stop mode.  
l
n
To cancel the operation, press the /:OFF button.  
Note:  
If the total number of tracks on the master MiniDisc does  
not match that on the MiniDisc for stamping, the unit will  
display "Can'tSTAMP" and turn off the power.  
4 Press the ENTER/SYNC button.  
A
If this happens, adjust the total number of tracks on the  
newly recorded MiniDisc using the edit operation.  
5 When the unit displays "CHANGE MD", re-  
move the master MiniDisc.  
Remove it without turning off the power. Or, the op-  
eration will be canceled.  
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Editing a Recorded MiniDisc  
To erase tracks one at a time  
To erase all of the tracks at once  
1 Start playing the track to be erased, and  
1 While in the stop mode, press the EDIT  
press the PLAY/PAUSE button.  
button repeatedly to select "ALL ERASE".  
2 Press the EDIT button repeatedly to select  
"ERASE".  
s-c  
e
2 Press the ENTER/SYNC button.  
u
MniiD  
3 Press the ENTER/SYNC button.  
Fae  
To cancel the operation, press the /:OFF button.  
d
3 Press the ENTER/SYNC button again.  
Rceor  
To cancel the operation, press the /:OFF button.  
n
nga  
4 Press the ENTER/SYNC button again.  
dti  
All of the tracks will be erased.  
The track will be erased.  
A
5 To erase other tracks, repeat steps 1 - 4.  
Caution:  
Once a track has been erased, it cannot be recov-  
ered. Check the track number before erasing it.  
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To divide a track  
To combine tracks  
1 Start playing the track to be divided into  
1 Start playing the last of the two tracks to  
two. Press the PLAY/PAUSE button at the  
point where you want to divide the track.  
be combined, and press the PLAY/PAUSE  
button.  
2 Press the EDIT button repeatedly to select  
2 Press the EDIT button repeatedly to select  
sc-  
e
"DIVIDE".  
"COMBINE".  
u
MiniD  
Fea  
3 Press the ENTER/SYNC button.  
3 Press the ENTER/SYNC button.  
e
Recor  
n
To cancel the operation, press the /:OFF button.  
To cancel the operation, press the /:OFF button.  
nga  
4 Press the ENTER/SYNC button again.  
4 Press the ENTER/SYNC button.  
dit  
A
The track will be divided into two tracks, and the unit  
will pause at the beginning of the second of the two  
new tracks.  
The two tracks will be combined, and the unit will be  
paused at the beginning of the combined track.  
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Editing a Recorded MiniDisc (continued)  
When a track has a name before dividing:  
To move a track  
The two new tracks will have the same name. However, in  
the TOC FULL condition, the second track may not be  
named.  
1 Play the track to be moved, and press the  
PLAY/PAUSE button.  
Total number of tracks that can be divided:  
Each disc can hold up to 255 tracks. However, even if the  
number of assigned tracks has not reached 254, it might  
not be possible to make any further divisions of tracks.  
2 Press the EDIT button repeatedly to select  
"MOVE".  
s-c  
e
u
To combine two non-adjacent tracks:  
First, put the two tracks next to each other in the order  
you want using the MOVE function. Then combine them  
using the COMBINE function.  
MniiD  
3 Press the ENTER/SYNC button.  
Fae  
e
When one or both tracks to be combined have  
a name:  
Rceor  
n
To cancel the operation, press the /:OFF button.  
The first track name will be used. However, when the first  
track does not have a name, the second track name will  
be used.  
nga  
4 Press the  
or  
button to select the di-  
rection.  
dti  
A
In the following cases, tracks may not be com-  
bined.  
z Digital recorded track and analog recorded track.  
z Long play recorded track and stereo recorded track.  
z Tracks whose recording time is less than 12 seconds.  
5 Press the ENTER/SYNC button again.  
The track will be moved, and the unit will be paused  
at the beginning of the track.  
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Listening through Another System  
Listening through a stereo system  
Listening through a car stereo  
em-  
e
u
Fea  
e
 r
n
thr  
A
Notes:  
Notes:  
z Adjust the volume of both this portable MD and a car  
z It is recommended that the volume level of the  
MiniDisc unit be set to maximum when listening  
through a stereo system.  
-
stereo.  
z Do not operate this portable MD while you drive a car.  
It may distract your attention and cause a traffic acci-  
dent.  
z Do not use any car adaptor except for the separately  
available AD-CA20X.  
z When recording with stereo system, eliminate the con-  
firmation sound (page 31). Otherwise, it will also be  
recorded.  
z The recording will be made in the analog mode.  
z Character information will not be recorded.  
z Remove the battery when you power the unit from the  
car battery.  
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Other Features and Caution  
Resuming auto play  
Rechargeable battery  
When you stop playback and replay the MiniDisc  
without removing it, playback starts from the point  
you stopped it.  
z A rechargeable nickel-metal hydride battery is the only  
kind that can be used. Even if the battery is not used,  
you should charge it at least once every three months  
because of the special quality of this battery.  
z The rechargeable battery can be charged approxi-  
mately 300 times.  
-
z When the operating time is reduced to about half the  
normal amount of time, even after a full charge is per-  
formed, replace the battery with a new one (AD-  
N70BT).  
Once you remove the MiniDisc, playback starts from  
the first track.  
u
s
z When the battery is charged for the first time or is  
charged after not being used for a long period, the  
operating time may be shorter than normal. The bat-  
tery life will recover with normal use i.e. charging and  
discharging.  
a
The unit provides the following functions when you  
use it with the separately available car adaptor (AD-  
CA20X) (when the rechargeable or alkaline battery is  
removed):  
z To avoid shortening the service life of the battery, only  
recharge the battery after it has been completely dis-  
charged.  
R
F
z If the rechargeable battery is used in a cold environ-  
ment, the operating time will be reduced.  
1. When you turn off the engine, the power of this porta-  
ble MD also turns off. (It may not work with some types  
of cars.)  
t
z Do not carry the battery in your pocket or a bag  
together with metal objects (keys, coins, jewelry, etc.).  
The battery may short out and generate significant  
amounts of heat.  
O
2. When you restart the engine, playback starts from the  
beginning of the stopped track.  
z Do not short-circuit the terminals as they will become  
very hot and will damage the battery.  
z Do not drop or subject the battery to shock.  
z Do not insert objects (metal etc.) into the battery com-  
partment of this product or into the rechargeable bat-  
tery.  
40  
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MiniDisc System Limitations  
The unit may have the following symptoms while recording or editing. The unit is not out of order.  
SYMPTOM  
LIMITATIONS  
"DISC FULL" or "TOC FULL" appears  
even though the MiniDisc still has re-  
cording time left.  
More than 255 tracks (maximum) cannot be recorded regardless of  
the recording time. If the MiniDisc is recorded or edited repeatedly or  
if it has scratches (recording skips scratched parts), you may not be  
able to record the maximum tracks above.  
-
The remaining recording time does not  
increase even though you erased  
tracks.  
The unit does not count non-recorded portions that last 12 or fewer  
seconds to display the remaining recording time. The time may not  
increase even if you erase short tracks.  
s
The total of the recorded time and the  
remaining time does not match the max-  
imum recordable time.  
One cluster (approximately 2 seconds) is the minimum unit for re-  
cording. For example, a 3-second track uses 2 clusters (approxi-  
mately 4 seconds). Therefore, the actual recordable time may be  
shorter than the displayed time.  
s
Combine function does not work.  
Sound skips in fast reverse/forward.  
A MiniDisc on which recording and editing are repeated may not al-  
low the combine function.  
S
R
One track is divided and recorded in separate places on a repeatedly  
recorded or edited MiniDisc. Sound may skip.  
inDsc  
A track number is created in the middle  
of a track.  
A track number may be created if there are scratches or dust on the  
MiniDisc.  
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Error Messages  
ERROR MESSAGES  
MEANING  
REMEDY  
BATT EMPTY  
z The battery is run down.  
z Charge the rechargeable battery or replace the al-  
kaline battery (or use the AC adaptor for power).  
BLANK MD  
Can't COPY  
z Nothing is recorded.  
z Replace the disc with a recorded disc.  
z You tried to record from a copy prohibited  
MiniDisc.  
z Record using the analog cable.  
Can't EDIT  
z A track cannot be edited.  
z Change the stop position of the track and then edit it.  
z Reload the disc.  
Can't READ (*)  
z The disc data cannot be read because the  
s
disc or unit is damaged.  
z Replace it with another recorded disc.  
e-s  
Can't REC  
z Recording cannot be performed correctly  
due to vibration or shock.  
z Re-record or replace it with another recordable  
disc.  
ess  
Can't STAMP  
Can't WRITE  
z Stamp function does not work.  
z Check the number of tracks.  
z Cannot save the TOC information correctly z Replace the disc with another recordable disc.  
to a MiniDisc. (A large portion of the disc has  
orM  
been damaged.)  
R
DEFECT  
z The disc is scratched.  
z If the sound you hear is not right, record again.  
z Replace the disc with another recordable disc.  
z Replace it with another recordable disc.  
DISC FULL  
Er-MD (**)  
z The disc is out of recording space.  
z The microprocessor has reported a system z To have it repaired, go to the distributor where you  
fault and the unit is out of order.  
purchased the unit.  
HOLD  
z The unit is in the hold mode.  
z Cancel the hold mode.  
LOCKED  
z You removed a MiniDisc while recording or z Turn off the power and remove the MiniDisc.  
editing.  
NO DISC  
z A disc has not been loaded.  
z Load a disc.  
Number or symbol appears in (*) position.  
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NO SIGNAL  
NOT PLAY  
z Poor connection of the digital cable.  
z Connect the digital cable securely.  
z No output signal comes out from the  
connected unit to playback.  
z If the portable CD player has a function to prevent sound  
skips, deactivate it.  
z The input signal has improper sampling z Play back with the connected unit.  
frequency.  
z You tried to play back a track that can- z Play back another track.  
not be played with this equipment.  
PLAY MD  
z You recorded on a playback-only disc. z Replace it with a recordable disc.  
s
POWER ?  
PROTECTED  
z Improper power is being supplied.  
z Use one of the specified power sources.  
es-  
z The write protection tab of a MiniDisc is z Move the write protection tab back to its original posi-  
set to the protected position. tion.  
z
You tried to record on a playback-only disc. z Replace it with a recordable MiniDisc.  
ess  
SORRY  
z Since a track number is currently being z Wait for a while and try the operation again.  
located or updated, the unit cannot ac-  
orM  
cept your command.  
R
TEMP OVER  
TOC FORM (**)  
TOC FULL  
z The temperature is too high.  
z Turn off the power, and wait for a while.  
z There is an error in the recording signal. z Erase all of the tracks, and then record again.  
z There is no space left for recording  
character information (track names,  
disc names, etc.).  
z Replace it with another recordable disc.  
Tr. Protect  
? DISC  
z The track has been protected from be- z Edit the track with the device on which it was recorded.  
ing erased.  
z A disc which contains data other than z A disc which contains non-music data cannot be played.  
music was played.  
z There is an error in the signal recorded z Replace it with another recorded disc.  
on the disc.  
Number or symbol appears in (*) position.  
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Troubleshooting  
Many potential "problems" can be resolved by the owner without calling a service technician. If something seems to be wrong  
with this product, check the following before calling your authorized SHARP dealer or service center.  
PROBLEM  
CAUSE  
The unit does not turn on.  
z Is the AC adaptor disconnected?  
z Is the battery exhausted?  
z Is the unit in the hold mode?  
z Has condensation formed inside the unit?  
z Is the unit being influenced by mechanical shock or by static electricity?  
z Is the volume set too low?  
s
No sound is heard from the head-  
phones.  
tnig-  
z Is the remote control unit or the headphones plugged in?  
z
z
Are you trying to play a MiniDisc with data on it instead of a MiniDisc containing music?  
Is the unit in the hold mode?  
l
When the operation buttons are  
pressed, the unit does not respond.  
z Is the battery exhausted?  
obu  
z Is the remote control unit plug or the headphones plug inserted firmly?  
z Is the battery exhausted?  
R
-
Some sounds are skipped.  
z Is the unit being subjected to excessive vibration?  
z Has the track number or character information been written on the disc yet?  
z Is the unit in the recording or editing mode?  
The MiniDisc cannot be ejected.  
Recording and editing are impossi- z Is the MiniDisc protected against accidental erasure?  
ble.  
z Is the unit connected properly to the other equipment?  
z
Is the AC adaptor unplugged or did a power failure occur while recording or editing?  
z Is the unit in the hold mode?  
z Is an optical signal being output from the stereo system? Read the operation  
manual for the stereo system.  
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Maintenance  
If trouble occurs  
Cleaning  
When this product is subjected to strong external interfer-  
ence (mechanical shock, excessive static electricity,  
abnormal supply voltage due to lightning, etc.) or if it is  
operated incorrectly, it may malfunction.  
When the unit becomes dirty  
Clean it with a soft cloth.When the unit is excessively  
dirty, use a soft cloth dampened in water (external sur-  
faces only).  
If such a problem occurs, do the following:  
1. Unplug the AC adaptor from the AC outlet.  
2. Remove the battery.  
3. Leave the unit completely unpowered for approxi-  
mately 30 seconds.  
4. Plug the AC adaptor back into the AC outlet and re-  
operate the unit.  
s
Clean the plugs and the connecting jack.  
If the plugs or jacks are dirty, noise may be heard. Clean-  
ing will prevent noise.  
ce-  
Moisture condensation  
Caution:  
When the unit has condensation inside, the disc signals  
cannot be read, and the unit may not function properly.  
z Do not use chemicals for cleaning (gasoline, paint  
thinner, etc.). It may damage the cabinet finish.  
z Do not apply oil to the inside of the unit. It may cause  
malfunctions.  
Mai  
R
In the following cases, condensation may form inside the  
unit.  
z Shortly after turning on a heater.  
z When the unit is placed in a room  
where there is excessive steam  
or moisture.  
z When the unit is moved from a  
cool place to a warm place.  
To remove condensation:  
Remove the MiniDisc and leave the unit for approxi-  
mately 1 hour. The condensation should evaporate and  
the unit will work properly.  
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Specifications  
As a part of our policy of continuous improvement, SHARP reserves the right to make design and specification chang-  
es for product improvement without prior notice. The performance specification figures indicated are nominal values  
of production units. There may be some deviations from these values in individual units.  
Battery life:  
General  
Power source:  
When using the recharge- When using a commercial-  
able battery (fully charged) ly available, high capacity,  
DC 1.2V:  
Rechargeable Nickel-Metal Hydride  
battery (AD-N70BT) x 1  
included with the unit  
"AA" size (LR6), alkaline  
battery  
s
DC 5V:  
AC adaptor (AC 120V, 60 Hz)  
Continuous recording:  
Approx. 7 hours  
Continuous recording:  
Approx. 3 hours  
DC 1.5V:  
Commercially available, "AA" size  
(LR6), alkaline battery x 1  
Continuous play:  
Approx. 12 hours  
Continuous play:  
Approx. 12 hours  
DC 4.5V:  
Optional car adaptor, AD-CA20X(for  
cars with a 12 - 24V DC negative  
ground electrical system)  
 -
z The continuous recording time is for analog inputs  
when the volume level is set to "VOL 0".  
z The continuous play time shows the value when the  
volume level is set to "VOL 15".  
pce  
Power con-  
sumption:  
7 W (AC adaptor)  
-
R
z The above values are the standard values when the  
unit is charged and used at an ambient temperature of  
77°F (25°C).  
z The operating time when using an alkaline battery  
may be different, depending on the type and manufac-  
turer of the battery, and on the operating temperature.  
Output pow- RMS; 20 mW (10 mW + 10 mW)  
er:  
(0.2% T.H.D.)  
Charging  
time:  
Approx. 3.5 hours (90 %)  
Approx. 5.5 hours (fully charged)  
(When using the AC adaptor included  
with the unit)  
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Input sensitivity:  
MiniDisc Recorder  
Recording  
level  
Reference input  
level  
Input impedance  
Type:  
Portable MiniDisc recorder  
Signal read- Non-contact, 3-beam semiconductor  
MIC H  
MIC L  
LINE  
0.25 mV  
2.5 mV  
100 mV  
10 k ohms  
10 k ohms  
20 k ohms  
out:  
laser pickup  
Audio chan- Stereo 2 channels/monaural (long-play  
nels:  
mode) 1 channel  
Frequency  
response:  
20 - 20,000 Hz (±3 dB)  
Output level:  
s
Specified  
output  
Maximum  
output level  
Load im-  
pedance  
Rotation  
speed:  
Approx. 400 - 900 rpm  
Headphones  
LINE  
-
10 mW + 10  
mW  
16 ohms  
Error correc- ACIRC (Advanced Cross Interleave  
Reed-Solomon Code)  
c
tion:  
250 mV  
(-12 dB)  
-
10 k ohms  
Coding:  
ATRAC (Adaptive TRansform Acoustic  
Coding), 24-bit computed type  
pec  
-
R
Recording  
method:  
Magnetic modulation overwrite method  
Dimensions: Width: 3-7/32" (81.1 mm)  
Height: 13/16" (19.9 mm)  
Sampling fre- 44.1 kHz (32 kHz and 48 kHz signals  
quency:  
are converted to 44.1 kHz, and then re-  
corded.)  
Depth: 3-21/32" (92.4 mm)  
Weight:  
0.38 lbs. (172 g) with rechargeable bat-  
tery  
Wow and  
flutter:  
Unmeasurable (less than ±0.001% W.  
peak)  
Input jack:  
Line/optical digital, microphone (pow-  
ered by the main unit)  
Output jack: Headphones (impedance: 16 ohms)/  
remote control unit  
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CONSUMER LIMITED WARRANTY  
SHARP ELECTRONICS CORPORATION warrants to the first consumer purchaser that this Sharp brand product (the “Product”), when shipped in its  
original container, will be free from defective workmanship and materials, and agrees that it will, at its option, either repair the defect or replace the defective  
Product or part thereof with a new or remanufactured equivalent at no charge to the purchaser for parts or labor for the period(s) set forth below.  
This warranty does not apply to any appearance items of the Product nor to the additional excluded item(s) set forth below nor to any Product the exterior  
of which has been damaged or defaced, which has been subjected to improper voltage or other misuse, abnormal service or handling, or which has been  
altered or modified in design or construction.  
In order to enforce the rights under this limited warranty, the purchaser should follow the steps set forth below and provide proof of purchase to the servicer.  
The limited warranty described herein is in addition to whatever implied warranties may be granted to purchasers by law. ALL IMPLIED WARRANTIES  
INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR USE ARE LIMITED TO THE PERIOD(S) FROM THE DATE OF PUR-  
CHASE SET FORTH BELOW. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.  
Neither the sales personnel of the seller nor any other person is authorized to make any warranties other than those described herein, or to extend the  
duration of any warranties beyond the time period described herein on behalf of Sharp.  
The warranties described herein shall be the sole and exclusive warranties granted by Sharp and shall be the sole and exclusive remedy available to the  
purchaser. Correction of defects, in the manner and for the period of time described herein, shall constitute complete fulfillment of all liabilities and  
responsibilities of Sharp to the purchaser with respect to the Product, and shall constitute full satisfaction of all claims, whether based on contract, negligence,  
strict liability or otherwise. In no event shall Sharp be liable, or in any way responsible, for any damages or defects in the Product which were caused by  
repairs or attempted repairs performed by anyone other than an authorized servicer. Nor shall Sharp be liable or in any way responsible for any incidental  
or consequential economic or property damage. Some states do not allow the exclusion of incidental or consequential damages, so the above exclusion  
may not apply to you.  
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS. YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.  
Model Specific Section  
Your Product Model Number & Description:  
MD-MT90 Portable MiniDisc Recorder  
(Be sure to have this information available when you need service for your Product.)  
One (1) year parts and ninety (90) days labor.  
Warranty Period for this Product:  
Additional Item(s) Excluded from Warranty Coverage (if any): Non-functional accessories, supplies, and consumable items.  
Where to Obtain Service:  
At a Sharp Authorized Servicer located in the United States.  
To find a location of the nearest Sharp Authorized Servicer, call Sharp toll free at 1-800-BE-SHARP.  
Ship prepaid or carry in your Product to a Sharp Authorized Servicer.  
Be sure to have Proof of Purchase available. If you ship the Product, be sure it is insured and packaged securely.  
What to do to Obtain Service:  
TO OBTAIN SUPPLY, ACCESSORY OR PRODUCT INFORMATION, CALL 1-800-BE-SHARP.  
SHARP ELECTRONICS CORPORATION  
Sharp Plaza, Mahwah, New Jersey 07430-2135  
Printed in Malaysia  
A0101.TO  
SHARP CORPORATION  
TINSE0355AWZZ  
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