MD-MT80W/90W/90/90C
SERVICE MANUAL
No. S4123MDMT80W/
PORTABLE MINIDISC RECORDER
MD-MT80W(S)
Illustration: MD-MT80W
MD-MT90W(S)
MD-MT90(S)
MODEL MD-MT90C(S)
• In the interests of user-safety the set should be restored to its
Illustration: MD-MT90W/90/90C
CONTENTS
SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT80W/90W ONLY) ..................................................................... 2
AC ADAPTOR AND PLUG (MD-MT80W/90W ONLY) .......................................................................................................... 3
SPECIFICATIONS ................................................................................................................................................................. 4
ACCESSORIES ..................................................................................................................................................................... 6
NAMES OF PARTS ............................................................................................................................................................... 7
OPERATION MANUAL .......................................................................................................................................................... 8
QUICK GUIDE (MD-MT90 ONLY) ....................................................................................................................................... 12
DISASSEMBLY.................................................................................................................................................................... 14
REMOVING AND REINSTALLING THE MAIN PARTS....................................................................................................... 15
ADJUSTMENT ...................................................................................................................................................................... 16
MD ERROR MESSAGE DISPLAY CONTENT LIST ........................................................................................................... 29
NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 30
TYPES OF TRANSISTOR AND DIODE .............................................................................................................................. 30
BLOCK DIAGRAM ............................................................................................................................................................... 31
SCHEMATIC DIAGRAM ...................................................................................................................................................... 32
WIRING SIDE OF P.W.BOARD........................................................................................................................................... 34
WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 37
VOLTAGE ............................................................................................................................................................................ 38
TROUBLESHOOTING ......................................................................................................................................................... 39
FUNCTION TABLE OF IC.................................................................................................................................................... 42
PARTS GUIDE/EXPLODED VIEW
PACKING OF THE SET (FOR U.S.A. ONLY)
original condition and only parts identical to those specified be
used.
Page
SHARP CORPORATION
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
MD-MT80W/90W/90/90C
SAFETY PRECAUTION FOR SERVICE MANUAL
(MD-MT80W/90W ONLY)
Precaution to be taken when replacing and servicing the
Laser Pickup.
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER
POWER OUTPUT IS LESS THAN CLASS 1 BUT THE LASER
COMPONENT IS CAPABLE OF EMITTING RADIATION
EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANT THAT THE FOLLOWING PRECAUTIONS ARE
OBSERVED DURING SERVICING TO PROTECT YOUR
EYES AGAINST EXPOSURE TO THE LASER BEAM.
(1) When the cabinet has been removed, the power is
turned on without a compact disc, and the Pickup is on
a position outer than the lead-in position, the Laser will
light for several seconds to detect a disc. Do not look
into the Pickup Lens.
(2) The Laser Power Output of the Pickup inside the unit
and replacement service parts have already been
adjusted prior to shipping.
(3) No adjustment to the Laser Power should be attempted
when replacing or servicing the Pickup.
(4) Under no circumstances look directly into the Pickup
Lens at any time.
(5) CAUTION - Use of controls or adjustments, or
performance of procedures other than those specified
herein may result in hazardous radiation exposure.
English:
This product is classified as a CLASS 1 LASER PRODUCT.
German:
Dieses Produkt ist ein Laserprodukt der Klasse 1.
French:
Ce Produit est Classifié comme étant un PRODUCTO
LASER DE CLASSE 1.
Laser Diode Properties
●Material: GaAlAs
●Wavelength: 785 nm
●Pulse time:
Read mode: 0.8 mW Continuous
Write mode: max 10 mW 0.5S
min cycle 1.5S
Repetition
Precaution to be taken when replacing and servicing the laser pickup.
The following precautions must be observed during servicing to protect your eyes against exposure to the laser.
Warning of possible eye damage when repairing:
If the AC adaptor or batteries are connected when the top housing (disc cover) of the unit is removed, and the PLAY key is
pressed, the laser will light up during focus access (2-3 seconds). (Fig. 2-1) During the operation, the laser will leak from the
opening between the magnetic head and the mechanical chassis (Fig. 2-2). In order to protect your eyes, you must not look
at the laser during repair. Before repairing be sure to disconnect the AC adaptor and remove the batteries.
Magnet head
Optical pickup
Figure 2-1 Figure 2-2
Top Cabinet
– 2 –
Mechanism
Chassis
Spindle motor
Magnet Head
Laser Beam
Main PWB
Optical Pick-Up
AC ADAPTOR AND PLUG
PADPA6049AWZZ PADPA5052AWZZ PADPA5051AWZZ PADPA5050AWZZ
QPLGA0004AWZZ
(MD-MT80W/90W ONLY)
MD-MT80W/90W/90/90C
– 3 –
MD-MT80W/90W/90/90C
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO
THE OPERATION MANUAL.
MD-MT80W/90W
SPECIFICATIONS
■ General
Power source:
DC 5V: AC adaptor (AC 110-240V, 50/60 Hz)
DC 1.5V: Commercially available, "AA" size
(LR6), alkaline battery x 1
DC 1.2V: Optional rechargeable Nickel-Metal
Hydride battery (AD-N70BT) x 1
DC 4.5V: Optional car adaptor, AD-CA20X(for
cars with a 12 - 24V DC negative earth
electrical system)
Power consumption:
Output power:
Charging
time:
Input sensitivity:
Recording
level
MIC H 0.25 mV 10 k ohms
MIC L 2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
Output level:
Headphones
LINE 250 mV (-12
Dimensions:
Weight:
Input socket:
Output socket:
0.15 A (AC adaptor)
RMS; 20 mW (10 mW + 10 mW)
(0.2% T.H.D.)
Approx. 3.5 hours (90 %)
Approx. 5.5 hours (fully charged)
(When using the AC adaptor included
with the unit)
Reference input
level
Specified
output
- 10 mW + 10 mW16 ohms
dB)
Width: 81.1 mm (3-7/32")
Height: 19.9 mm (13/16")
Depth: 92.4 mm (3-21/32")
147 g (0.32 lbs.) without battery
(MD-MT80W)
172 g (0.38 lbs.) with rechargeable battery
(MD-MT90W)
Line/optical digital, microphone (pow-
ered by the main unit)
Headphones (impedance: 16 ohms)
Maximum
output level
Input impedance
Load impedance
- 10 k ohms
Battery life:
When using the optional
rechargeable battery (fully
charged)
Continuous recording:
Approx. 7 hours
Continuous play:
Approx. 12 hours
●
The continuous recording time is for analogue inputs
when the volume lev el is set to "VOL 0".
●
The continuous play time shows the value when the
volume level is set to "VOL 15".
●
The above values are the standard values when the
unit is charged and used at an ambient temperature of
25°C (77°F).
●
The operating time when using an alkaline battery
may be different, depending on the type and manufacturer of the battery, and on the operating temperature.
When using a commercially available, high capacity,
"AA" size (LR6), alkaline
battery
Continuous recording:
Approx. 3 hours
Continuous play:
Approx. 12 hours
■ MiniDisc Recorder
Type:
Signal read-
out:
Audio chan-
nels:
Frequency
response:
Rotation
speed:
Error correc-
tion:
Coding:
Recording
method:
Sampling frequency:
Wow and
flutter:
Specifications for this model are subject to change without prior
notice
Portable MiniDisc recorder
Non-contact, 3-beam semi-conductor
laser pick-up
Stereo 2 channels/monaural (long-play
mode) 1 channel
20 - 20,000 Hz (±3 dB)
Approx. 400 - 900 rpm
ACIRC (Advanced Cross Interleave
Reed-Solomon Code)
ATRAC (Adaptive TRansform Acoustic
Coding), 24-bit computed type
Magnetic modulation overwrite method
44.1 kHz (32 kHz and 48 kHz signals
are converted to 44.1 kHz, and then recorded.)
Unmeasurable (less than ±0.001% W.
peak)
– 4 –
MD-MT90/90C
MD-MT80W/90W/90/90C
■ General
Power source:
DC 1.2V: Rechargeable Nickel-Metal Hydride
battery (AD-N70BT) x 1
DC 5V: AC adaptor (AC 120V, 60 Hz)
DC 1.5V: Commercially available, "AA" size
(LR6), alkaline battery x 1
DC 4.5V: Optional car adaptor, AD-CA20X(for
cars with a 12 - 24V DC negative
ground electrical system)
Power consumption:
Output power:
Charging
time:
Input sensitivity:
Recording
level
MIC H 0.25 mV 10 k ohms
MIC L 2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
Output level:
Headphones
LINE 250 mV
Dimensions:
Weight:
Input jack:
7 W (AC adaptor)
RMS; 20 mW (10 mW + 10 mW)
(0.2% T.H.D.)
Approx. 3.5 hours (90 %)
Approx. 5.5 hours (fully charged)
(When using the AC adaptor included
with the unit)
Reference input
level
Specified
output
- 10 mW + 10 mW16 ohms
(-12 dB)
Width: 3-7/32" (81.1 mm)
Height: 13/16" (19.9 mm)
Depth: 3-21/32" (92.4 mm)
0.38 lbs. (172 g) with rechargeable bat-
tery
Line/optical digital, microphone (pow-
ered by the main unit)
Maximum
output level
Input impedance
Load impedance
- 10 k ohms
Battery life:
When using the rechargeable battery (fully charged)
included with the unit
Continuous recording:
Approx. 7 hours
Continuous play:
Approx. 12 hours
●
The continuous recording time is for analog inputs
when the volume lev el is set to "VOL 0".
●
The continuous play time shows the value when the
volume level is set to "VOL 15".
●
The above values are the standard values when the
unit is charged and used at an ambient temperature of
77°F (25°C).
●
The operating time when using an alkaline battery
may be different, depending on the type and manufacturer of the battery, and on the operating temperature.
When using a commercially available, high capacity,
"AA" size (LR6), alkaline
battery
Continuous recording:
Approx. 3 hours
Continuous play:
Approx. 12 hours
■ MiniDisc Recorder
Type:
Signal read-
out:
Audio chan-
nels:
Frequency
response:
Rotation
speed:
Error correc-
tion:
Coding:
Recording
method:
Sampling frequency:
Wow and
flutter:
Portable MiniDisc recorder
Non-contact, 3-beam semiconductor
laser pickup
Stereo 2 channels/monaural (long-play
mode) 1 channel
20 - 20,000 Hz (±3 dB)
Approx. 400 - 900 rpm
ACIRC (Advanced Cross Interleave
Reed-Solomon Code)
ATRAC (Adaptive TRansform Acoustic
Coding), 24-bit computed type
Magnetic modulation overwrite method
44.1 kHz (32 kHz and 48 kHz signals
are converted to 44.1 kHz, and then recorded.)
Unmeasurable (less than ±0.001% W.
peak)
Output jack:
Headphones (impedance: 16 ohms)/
remote control unit
– 5 –
MD-MT80W/90W/90/90C
MD-MT80W
ACCESSORIES
AC Adaptor x 1
or
Connection Cable (for analogue
Headphones x 1
Notes:
●
Parts and equipment mentioned in this operation manual other than those detailed above are not included.
●
The AC adaptor may be different from the one in the drawing.
MD-MT90W
Connection Cable (for analogue
recording) x 1
recording) x 1
MD-MT90W
AC Adaptor x 1
or
or
or
or
or
Headphones x 1
Notes:
●
Parts and equipment mentioned in this operation manual other than those detailed above are not included.
●
The AC adaptor may be different from the one in the drawing.
Remote Control x 1
Connection Cable (for
digital recording) x 1
Rechargeable Nickel-Metal
Hydride Battery (AD-N70BT) x 1
MD-MT90/90C
Remote Control x 1
(RRMCW0002AWSA)
Rechargeable NickelMetal Hydride Battery
(AD-N70BT) x 1
(UBATM0003AWSA)
Notes:
●
Parts and equipment mentioned in this operation manual other than those detailed above are not included.
●
The AC adaptor may be different from the one in the drawing.
Headphones x 1
(RPHOH0005AWZZ)
Connection Cable (for
analog recording) x 1
(QCNWG0029AWZZ)
AC Adaptor
(RADPA3048AWZZ) x 1
Connection Cable (for
digital recording) x 1
(QCNWG0422AFZZ)
Battery Carrying Case x 1
Battery Carrying Case x 1
(UBAGC0003AWZZ)
Carrying Bag x 1
(UBAGC0006AWSA)
– 6 –
NAMES OF P ARTS
Main unit
■
1.5V DC Input Jack
2.Optical/Line Input Jack
3.Microphone Input Jack
4.Bass/Delete Button
5.Edit/Auto Mark/Time Mark Button
6.Display/Character Select Button
7.Mode/Charge Button
8.Record/Track Mark Button
9.V olume/Cursor/Fast Forw ard/Fast Reverse/
Recording Level/Name Select Button
10.Play/Pause Button
11.Stop/Power Off/Hold Button
12.Enter/Fast Play/Synchro Button
13.Remote Control/Headphones/Line Output Jack
14.Open Lever
15.Battery Cover
MD-MT80W/90W/90/90C
Illustration: MD-MT90W/90/90C
■
Main unit
1.5V DC Input Socket
2.Optical/Line Input Socket
3.Microphone Input Socket
4.Bass/Delete Button
5.Edit/Auto Mark/Time Mark Button
6.Display/Character Select Button
7.Mode/Charge Button
8.Record/Track Mark Button
9.V olume/Cursor/F ast Forward/Fast Reverse/
Recording Level/Name Select Button
10.Play/Pause Button
11.Stop/Power Off/Hold Button
12.Enter/Fast Play/Synchro Button
13.Headphones/Line Output Socket
14.Open Lever
15.Battery Cover
Illustration: MD-MT80W
– 7 –
MD-MT80W/90W/90/90C
NAMES OF PARTS
Display panel
■
1.Level Meter
2.Record Indicator
3.Remaining Recording Time Indicator
4.Monaural Long-Play Mode Indicator
5.Repeat Indicator
6.TOC Indicator
7.Synchro Recording Indicator
8.Disc Mode Indicator
9.Disc Name Indicator
10.Track Name Indicator
11.Total Track Number Indicator
12.Fast Play Indicator
13.Battery Indicator
14.Random Indicator
15.Track Number Indicator
16.Character/Time Information Indicator
Remote control unit (MD-MT90W/90/90C)
■
1.Headphones Jack
2.Bass/Delete/Track Mark Button
3.Volume Down/Cursor Button
4.Volume Up/Cursor Button
5.Hold Switch
6.Play/Pause Button
7.Fast Reverse/Record ing Level Do wn/Name Select
Button
8.Fast Forward/Recording Level Up/Name Select
Button
9.Stop/Power Off Button
MD-MT80W/90W
OPERATION MANUAL
Battery Power
1
Illustration: MD-MT90W
■
Charging the rechargeab le batte ry
When a separately available rechargeable battery is
used for the first time or when you use it after a long
period of disuse, be sure to charge it fully.
1
Insert the rechargeable battery.
2
A rechargeable battery other than the AD-N70BT
cannot be
2
Plug the AC adaptor into the wall socket, and
then insert the plug on the other end into the DC
IN 5V socket.
3
Press the MODE/CHRG button.
" " will flash, and battery will begin charging.
●
After the rechargeable battery is charged or used, it
will get slightly warm. This is normal.
●
When the portable MD is turned on or operating, the
battery will not be charged.
charged.
– 8 –
MD-MT90/90C
■ Using with the rechargeable or alkaline
battery
Notes:
●
Setting the volume le v el to "0" whilst recording with the
rechargeable or an alkaline battery reduces the battery drain.
●
When you do not use the unit for hours, remove the
battery. (The battery drains gradually even when the
power is turned off.)
●
This unit can be used with the AC adaptor when the
●
Carry the battery in the supplied case.
(Except for MD-MT80W)
rechargeable or an alkaline battery is in the unit.
Caution:
Do not use a nickel-cadmium battery.
1
Disconnect the AC adaptor.
2
Insert the rechargeable battery or alkaline battery from
the (+) marked side.
Use a commercially available LR6,
"AA" size alkaline battery.
Battery Power
MD-MT80W/90W/90/90C
■ 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.
2
Plug the AC adaptor into the AC out let, and
then insert the plug on the other end into
the DC IN 5V jack.
3
Press the MODE/CHRG button.
" " will flash, and battery will begin charging.
●
After the rechargeable battery is charged or used, it
will get slightly warm. This is normal.
●
When the portable MD is turned on or operating, the
battery will not be charged.
MD-MT80W/90W/90/90C
■ Checking the remaining amount of bat-
tery level
The remaining amount of battery level is shown by the
battery indicator ( ) during operation.
●
When the battery is completely discharged, the battery indicator will flash. Recharge the battery or
replace the alkaline battery with a new one.
●
When the battery has run completely out, "BATT
EMPTY" will appear. Then, the power will be disconnected automatically.
Notes:
●
If you use the battery which you stopped charging
halfway, " " may appear. It does not mean that the
battery is completely charged.
●
The battery indicator will not correctly display the
remaining capacity for approximately 10 seconds after
the power has been turned on.
●
When the AC adaptor or a separately available car
adaptor is used, the battery indicator will not be
shown.
●
The number of bars shown in the battery indicator may
increase or decrease, depending on the operation
being performed. This is normal.
– 9 –
MD-MT80W/90W/90/90C
Error Messages
ERROR MESSAGES
BATT EMPTY
BLANK MD
Can't COPY
Can't EDIT
Can't READ (*)
Can't REC
Can't STAMP
Can't WRITE
DEFECT
DISC FULL
Er-MD (**)
HOLD
LOCKED
NO DISC
Number or symbol appears in (*) position. (Refer to P.29)
The battery is run down.
●
Nothing is recorded.
●
You tried to record from a co py prohibited
●
MiniDisc.
A track cannot be edited.
●
The disc data cannot be read bec ause the
●
disc or unit is damaged.
Recording cannot be performed correctly
●
due to vibration or shock .
Stamp function does not work.
●
Cannot save the TOC information correc tly
●
to a MiniDisc. (A large portion of the dis c has
been damaged.)
The disc is scratched.
●
The disc is out of recording space.
●
The microprocessor has reported a system
●
fault and the unit is out of order.
The unit is in the hold mode.
●
You removed a MiniDisc while recording or
●
editing.
A disc has not been loaded.
●
MEANING REMEDY
Charge the rechargeable battery or replace the al-
●
kaline battery (or use the AC adaptor for power).
Replace the disc with a recorde d disc.
●
Record using the analog cable.
●
Change the stop position of the track and then edit it.
●
Reload the disc.
●
Replace it with another reco rded disc.
●
Re-record or replace it with another recordable
●
disc.
Check the number of tracks.
●
Replace the disc with another recordable disc.
●
If the sound you hear is not right, record again.
●
Replace the disc with another recordable disc.
●
Replace it with another recordable disc.
●
To have it repaired, go to the dist ributor where you
●
purchas ed t he un i t.
Cancel the hold mode.
●
Turn off the power and remove the MiniDisc.
●
Load a disc.
●
NO SIGNAL
NOT PLAY
PLAY MD
POWER ?
PROTECTED
SORRY
TEMP OVER
TOC FORM (**)
TOC FULL
Tr. Protect
? DISC
Number or symbol appears in (*) posit ion. (Refer to P.29)
Poor connection of the digital cable.
●
No output signal comes out from the
●
connected unit to playback.
The input signal has improper sampling
●
frequency.
You tried to play back a tra ck that can-
●
not be played with this eq uipment.
You recorded on a playback-only disc.●Replace it with a recordable disc.
●
Improper power is being supplied.
●
The write protection t ab of a MiniDisc is
●
set to the protected position.
You tried to record on a playback-only disc.
●
Since a track number is curren tly being
●
located or updated, the unit cannot accept your command.
The temperature is too high.
●
There is an error in the recording signal.●Erase all of the tracks, and then record again.
●
There is no space left for recording
●
character information (track names,
disc names, etc.).
The track has been protected from be-
●
ing erased.
A disc which contains data other than
●
music was played.
There is an error in the s ignal rec orded
●
on the disc.
Connect the digital cable securely.
●
If the portable CD player has a fun ction to preve nt sound
●
skips, deactivate it .
Playback with the connected unit.
●
Play back another track.
●
Use one of the specified power sources.
●
Move the wri te pro tection ta b ba c k to its origin al po s i -
●
tion.
Replace it with a recordable MiniDisc.
●
Wait for a while and try the operation again.
●
Turn off the power, and wait for a while.
●
Replace it with another recordable disc.
●
Edit the track with the device on which it was recorded.
●
A disc which contains n on-music dat a cannot be pla yed.
●
Replace it with another recorded disc.
●
– 10 –
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 recording time left.
The remaining recording time does not
increase even though you erased
tracks.
The total of the recorded time and the
remaining time does not match the maximum recordable time.
Combine function does not work.
Sound skips in fast reverse/forward.
A track number is created in the middle
of a track.
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 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.
One cluster (approximately 2 seconds) is the minimum unit for recording. For example, a 3-second track uses 2 clusters (approximately 4 seconds). Therefore, the actual recordable time may be
shorter than the displayed time.
A MiniDisc on which recording and editing are repeated may not allow the combine function.
One track is divided and recorded in separate places on a repeatedly
recorded or edited MiniDisc. Sound may skip.
A track number may be created if there are scratches or dust on the
MiniDisc.
MD-MT80W/90W/90/90C
Troubleshooting
Many potential "probl ems" can be resolv ed by the o wner without calling a service techn ician. If so mething seems to be wrong
with this product, check the following before calli ng your authorised SHARP dealer or service centre.
PROBLEM CAUSE
The unit does not turn on.
No sound is heard from the earphones.
When the operation buttons are
pressed, the unit does no t respond.
Some sounds are skipped.
The MiniDisc cannot be ejected.
Recording and editing are impossible.
Is the AC adaptor disconnected?
●
Is the battery exhausted?
●
Is the unit in the h old mode?
●
Has condensation formed inside the unit?
●
Is the unit being influenced by mechanical shock or by static electricity?
●
Is the volume set too low?
●
Is the remote control unit or the headphones plugged in?
●
Are you trying to play a MiniDisc with data on it instead of a MiniDisc containing music?
●
Is the unit in the h old mode?
●
Is the battery exhausted?
●
Is the remote control unit plug or the headphones plug inserted firmly?
●
Is the battery exhausted?
●
Is the unit bein g s u bj ected to exc e ss i v e vib r ation?
●
Has the track number or cha r acter information been wri tten on the disc yet?
●
Is the unit in the recording or editing mode?
●
Is the MiniDisc protected against accidental erasure?
●
Is the unit connected properly to the other equipment?
●
Is the AC adaptor unplugged or did a power failure occur whilst recording or editing?
●
Is the unit in the h old mode?
●
Is an optical signal being o utput from the stereo system? Read the operation
●
manual for the stereo sy st em.
(Remote control unit : MD-MT90W/90/90C Only)
– 11 –
MD-MT80W/90W/90/90C
MD-MT90 ONLY
1
Inserting a MiniDisc
Quick Guide / Guía rápida
PORTABLE MINIDISC RECORDER
GRABADOR/REPRODUCTOR MINIDISC
PORTÁTIL
MODEL
MD-MT90
Quick Setup Guide
Guía rápida de configuración
/MODELO
Follow the setup procedure (1-3) before you use
this unit.
Siga los procedimientos de configuración (1-3) antes de utilizar el aparato.
Quick Operation Guide
Guía rápida de operación
Explains basic recording and playback procedures.
Explica los procedimientos básicos de grabación y
reproducción.
Refer to the operation manual for details.
Para más detalles, consulte el manual de manejo.
Inserción de un minidisco
44
222
33
Insert according to the direction of the arrow.
Insértelo de acuerdo con la dirección de la flecha.
1 Slide the OPEN lever to re-
lease the compartment door.
Deslice la palanca OPEN para
abrir la puerta del compartimiento.
2 Lift it up.
Levántela.
Recordable
Para poder
grabar
Recording
prevented
Para no poder
grabar
3 Insert a MiniDisc as shown.
Inserte un minidisco como se
muestra.
4 Close the compartment door.
Cierre la puerta del compartimiento.
When you record on a MiniDisc,
check that the erase prevention tab
is set to the “Recordable” position.
Cuando grabe en un MD, compruebe
que la lengüeta de prevención contra borrado esté puesta en la posición
"grabable".
1
2
Connect the AC adaptor
Conecte el adaptador de CA
AC 120V, 60 Hz
120V CA, 60Hz
1
To an AC outlet
A un tomacorriente
de CA
1
Plug the AC adaptor into the
AC outlet.
Enchufe el adaptador de CA en
el tomacorriente de CA
Before using the unit with a rechargeable battery , the battery has to be charged. Refer
to “Battery Power”, pages 28-29 (operation manual) for details.
Antes de emplear el aparato con una batería recargable, se deberá cargar la
batería. Consulte el apartado de "Alimentación con pilas", en las páginas 28-29
(manual de manejo) para más detalles.
To the DC IN 5V jack
A la toma DC IN 5V
.
2
Insert securely, all the way in.
Insértela con seguridad a fondo.
2
Insert the plug on the other
end into the DC IN 5V jack.
Inserte la clavija del otro
extremo en la toma DC IN 5V.
3
Connections /
White: T o Left
Blanco: A la
izquierda
LINE OUT
NOTE:
Refer to page 11 (operation manual) for connecting the unit to a stereo system
with “DIGITAL OUT” or “OPTICAL OUT” jacks.
NOTA:
Para conectar el aparato a un sistema estéreo provisto de tomas de salida digital
"DIGITAL OUT" o de salida óptica "OPTICAL OUT", consulte la página 1 1 (manual
de manejo).
To a stereo system with
jacks
Note:
LEFTRIGHT
If the audio system has only one pair of jack then they are usually
for input only and recording via this connection is not possible.
A un sistema estéreo provisto de tomas de salida de
línea "LINE OUT" o de salida de audio "AUDIO OUT"
Nota:
Si el sistema de audio sólo tiene un par de tomas, normalmente
son sólo de entrada y no puede realizarse la grabación mediante
esta conexión.
Conexiones
OPTICAL/
LINE IN
Red: T o Right
Rojo: A la
derecha
“LINE OUT” or “AUDIO OUT”
– 12 –
MD-MT80W/90W/90/90C
Playing /
Reproducción
1
Insert the headphones plug firmly into the headphones jack
on the remote control unit.
Inserte firmemente la clavija de los auriculares en la toma de auriculares del
controlador remoto.
2
Plug the remote control into the REMOTE jack on the unit.
Enchufe el controlador remoto en la toma REMOTE del aparato.
3
Insert a MiniDisc.
Inserte un MD.
4
Press the PLAY/PAUSE
button.
Playback starts automatically with a playback-only MiniDisc or a MiniDisc
which is protected against accidental erasure (Auto-play function).
Pulse el botón PLAY/PAUSE.
La reproducción se inicia automáticamente con un minidisco de sólo reproducción o
un minidisco protegido contra borrado accidental.(Función de reproducción
automática)
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.
Para detener la reproducción
Pulse el botón
■
/:OFF.
Si el aparato no se utiliza durante un
mínimo de 2 minutos en el modo de
parada, la alimentación se desconectará
automáticamente.
Preparation for use
Preparación para su utilización
The unit does not work if the unit is in the hold mode.
El aparato no funciona si está en el modo de retención.
Press the HOLD button for 2 seconds or more.
Pulse el botón
CAUTION:
It is not recommendable to put the MiniDisc into a rear
pocket, as this may damage the product when sitting.
PRECAUCIÓN:
No se recomienda ponerse un minidisco en el bolsillo
trasero del pantalón, porque podría dañarlo al sentarse.
HOLD
durante 2 o más segundos.
Hold
Retención
Released
Liberación
Recording /
Check that the unit is connected to the stereo system.
Compruebe que el aparato esté conectado al sistema estéreo.
1
Press the REC button.
Pulse el botón REC.
2
Begin playback on the stereo system connected to this unit.
Inicie la reproducción en el sistema estéreo conectado a este aparato.
3
Press the
Adjust the recording level so that the maximum sound volume from the
source makes the reading swing somewhere between —4 dB and 0 dB.
Pulse el botón
Ajuste el nivel de grabación para que el volumen de sonido máximo de la fuente
produzca una indicación de entre —4 dB y 0 dB.
This unit can adjust the digital recording level just the same as the analog
recording.
Este aparato puede ajustar el nivel de grabación digital del mismo mode que en el
caso de la grabación analógica.
55
5 or
55
55
5
o
55
Level meter indicator
Indicador del medidor de nivel
Grabación
44
4 button
44
44
4
44
to adjust the recording level.
para ajustar el nivel de grabación.
0dB
4dB
Recording: continued
4
Press the PAUSE button on the stereo system to enter the play-
back pause mode.
Here you can search for the track to record.
Pulse el botón PAUSE del sistema estéreo para establecer el modo de pausa
de reproducción.
Aquí podrá buscar la pista a grabarse.
5
Press the PLAY/PAUSE button to start the MiniDisc unit re-
cording.
Pulse el botón PLAY/ PAUSE para iniciar la grabación del aparato de MD.
6
Begin playback on the stereo system, and the output will be
recorded.
Inicie la reproducción del sistema estéreo, y se grabará la salida.
To stop recording
Press the ■ / :OFF button.
When recording stops, “TOC” appears
(T able Of Contents). While “T OC” appears, recorded contents have not yet
been updated on the MiniDisc.
Para detener la grabación
Pulse el botón
Cuando se detenga la grabación,
aparecerá “TOC” (índice). Mientras
aparece “TOC”, aún no se habrá
actualizado el contenido grabado en el MD.
■
/:OFF.
TOC display
Visualización
TOC
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.
Para actualizar el contenido
grabado del MD
Pulse el botón
parada.
La alimentación se desconectará después
de haber actualizado el contenido grabado
en el MD.
■
/:OFF en el modo de
– 13 –
MD-MT80W/90W/90/90C
DISASSEMBLY
Cares before disassembling
When assembling the machine after disassembling or
repair, observe the following requirements so as to ensure
safety and performance.
1. Remove the batteries from the machine, and take out the
mini-disc.
2. When assembling after repair, be sure to position the
wires in the same location.
Use the specified screws to fix the cabinet and the
mechanism unit. The use of the screws with length other
than specified may cause contact with the mechanism
unit resulting in malfunction.
3. When repairing, pay close attention so not to damage the
IC from static electricity.
STEP
REMOVAL
1 Bottom Cabinet 1. Screw ..................... (A1) x6 14-1
2 Top Cabinet 1. Open the Top cabinet. 14-1
3 Main PWB 1. Open the Battery Lid. 14-1
4 Mechanism Unit 1. Screw .................... (D1) x2 14-3
PROCEDURE
2. Screw ..................... (B1) x4
3. Flexible PWB.......... (B2) x2 14-2
2. Screw .................... (C1) x4 14-2
3. Flexible PWB......... (C2) x2
4. Soldering ............... (C3) x2
2. Raise the rear part, and
remove in the arrow direction.
FIGURE
Illustration: MD-MT90W
(B1) x2
ø1.4 x2mm
Top Cabinet
(A1) x2
ø1.4 x2mm
(C1) x3
ø1.7 x2.5mm
(C2) x1*
Open Lever
(C3) x1
Main PWB
Pull
(A1) x1
ø1.4 x2mm
Bottom Cabinet
Figure 14-1
Pull
(A1) x2
ø1.4 x2mm
(C1) x1
ø1.4 x2.5mm
Pull
Pull
Pull
Battery Lid
(A1) x1
ø1.4 x2mm
(B2) x2
(B1) x2
ø1.4 x2mm
(C2) x1
(C3) x1
Mechanism Unit
(D1) x1
ø1.4 x1.5mm
Center Cabinet
Figure 14-3
(D1) x1
ø1.4 x1.5mm
Center Cabinet
Felt
Put the fold on the connector, and apply
with the felt. Sagging may result in contact
with the sheet metal.
Caution:
Carefully handle the main PWB and flexible PWB. After removing the
flexible PWB (1*) for the optical pickup from the connector, do not
touch directly the front end of flexible PWB with your hand so as to
prevent damage of optical pickup by static electricity.
Figure 14-2
– 14 –
REMOVING AND REINSTALLING THE MAIN PARTS
Remove the mechanism according to the disassembling methods 1 to 4. (See Page 14.)
How to remove the spindle motor (See Fig. 15-1.)
1. Remove the solder joints (A1) x 4 of flexible PWB.
2. Remove the screws (A2) x 3 pcs., and remove the spindle
motor.
How to remove the Lift motor (See Fig. 15-2.)
1. Remove the solder joints (B1) x 2 of lift motor lead wire.
2. Remove the screw (B2) x 1 pc., and remove the lift motor.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is caused.)
How to remove the sled motor (See Fig. 15-3.)
1. Remove the stop washer (C1) x 1 pc., and remove the drive
gear (C2) x 1 pc.
2. Remove the screws (C3) x 2 pcs.
3. Remove the solder joints (C4) x 2 of flexible PWB., and
remove the sled motor.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is caused.)
(A2) x3
ø1.4 x2.5mm
Spindle
Motor
(B2) x1
ø1.4 x4.5mm
Lift Motor
MD-MT80W/90W/90/90C
Mechanism Flexible
PWB Solder joints
(A1)x4
MD Mechanism
Figure 15-1
Remove the
Solder joints
(B1)x2
How to remove the magnetic head (See Fig. 15-4.)
1. Remove the screws (D1) x 2 pcs. of the magnetic head and
the optical pickup, and remove the solder joints (D2) x 2 pcs.
of the head flexible plate.
Note:
Mount carefully so as not to damage the magnetic head.
How to reinstall the optical pickup
(See Fig. 15-5.)
1. Remove the screw (E1) x 1 pc., and remove the spring.
2. Slowly raise the optical pickup.
Optical Pickup Unit
(E1) x1
ø1.7 x3mm
Spring
Stop Washer
(C1)x1
Drive Gear
(C2)x1
MD Mechanism
Figure 15-2
Figure 15-3
(D1) x2
ø1.4 x1.8mm
(C3) x2
ø1.4 x1.2mm
Sled Motor
Mechanism Flexible
PWB Solder joints
(C4)x2
MD Mechanism
Magnetic head
Solder joints
(D2)x2
Figure 15-5
MD Mechanism
MD Mechanism
Figure 15-4
– 15 –
MD-MT80W/90W/90/90C
ADJUSTMENT
Test disc
MD adjustment needs two types of disc, namely recording disc (low reflection disc) and playback-only disc (high
reflection disc).
Type
Test disc
Parts No.
1 High reflection disc MMD-110 (TEAC Test MD) 88GMMD-110
2 Low reflection disc MMD-212 (TEAC Test MD) 74-minute disc 88GMMD-212
3 Low reflection disc MMD-213A (TEAC Test MD) 80-minute disc 88GMMD-213A
4 Low reflection disc Recording minidisc UDSKM0001AFZZ
Note: Use the low reflection disc on which music has been recorded.
Entering the TEST mode
1. Setting at port (power nonconnected state)
(1) Set the port as follows.
TEST1 : "Low" (TP416)
TEST0 : "High"
(2) Turn the Power ON.
(3) Test Mode START [ T E S T _ ]
2. Setting by special button operation (in standby state)
(1) Holding down the DISP button and ENTER button, press the PLAY button.
(2) Normal mode setting initialization (BASS setting, VOL setting, etc.)
*Since the unit is changed to the setting for production line inspection , be sure to set it to the default setting state in the following default
setting procedure before returning it to the user.
(3) Indication of microcomputer version for one second [ Z 0 4 A b X ]
Destination
Microcomputer version
(4) Whole LCD lighting for 2 seconds
(5) Test Mode START [ T E S T _ ]
*When the PLAY button is pressed during indication (3) and (4), the process proceeds to (5).
EEPROM version
Leaving the TEST mode
(1) Press the STOP button in the TEST mode stop state.
Shipping setting method
Holding down simultaneously the VOLUME – Button and PLAY Button of the set unit without disc, supply the power from the DC IN plug.
After the indication "INIT" -> "BYE OK" disappears, release the power supply of DC IN.
Test Mode
1. AUTO 1 Mode • Perform preliminary automatic adjustment.
2. AUTO 2 Mode
3. TEST-PLAY Mode
4. TEST-REC Mode
5. MANUAL 1 Mode
6. MANUAL 2 Mode
• If the combination of mechanism and pickup
PWB has been changed, be sure to start from
AUTO1.
• Perform ATT (attenuator) automatic adjustment.
• Perform continuous playback (error rate display,
jump test)
• Continuous playback from the specified address
is performed.
• 1 line, 10 lines or 384 lines manual jump is
performed.
• C1 error rate display (pit section), ADIP error
rate display (groove section)
• The temperature correction is performed only when
servo start is performed, but the posture correction
is not performed during continuous playback.
• Continuous record from the specified address
is performed.
• Change of record laser output(servo gain is also
changed according to laser output).
• The temperature correction is performed only
when servo start is performed, but the posture
correction is not performed during continuous
recording.
• Temperature is displayed. (Updating in real time)
• Seeing the displayed adjustment value, perform
preliminary manual adjustment.
(Error rate indication, jump test)
• Temperature is displayed. (Updating in real time)
• Seeing the displayed adjustment value perform
manfully the preliminary adjustment.
(Error rate indication, jump test)
• Continuous playback is performed
(Error rate display, jump test).
7. RESULT 1 Mode
8. RESULT 2 Mode
9. DIGITAL INPUT Mode
10. ERROR INFORMATION
Mode • Error information is initialized
11. NORMAL Mode
12. EEPROM Mode
13. INNER Mode
• The value adjusted in AUTO1 or MANUAL1 is
indicated.
• (Execution in servo "OFF" state").
• The value adjusted in AUTO 2 or MANUAL 2 is
indicated.
• Adjustment value is changed manually.
(Error rate display, jump test).
• Digital input information is displayed.
• Error information is displayed.
• The mode is changed from the TEST mode to
the normal mode without adjustment.
• In the normal mode the internal operation mode,
memory capacity, etc. areindicated.
• In the normal mode both temperature correction
and posture correction are perfomed.
• Factors of digital servo are changed manually.
(Each servo is turned on individually.)
• Cut-off frequency of BASS1, BASS2 and BASS3
is selected manually.
• Temperature detection terminal voltage is
measured, and the reference value is set.
• Defaults are selected and set.
• Setting of EEPROM protect area is updated.
(In case of protect releasing)
• Determine the position where the INNER switch
is turned on. (Only high reflection disc).
• The temperature correction is performed only
when servo start is performed, but the posture
correction is not performed.
– 16 –
Operation in each TEST mode
1. AUTO1 Mode
• When the STOP button is pressed while the AUTO1 menu
appears or during automatic adjustment, the mode changes
to the TEST mode stop state. At this time the adjustment
value is not output.
• Be sure to adjust, using the specified disc MMD-213A or
MMD-212.
At this time release the EEPROM (IC402) protection. (Refer
to EEPROM write procedure.)
• Adjustment NG; Adjustment item out of range, focus ON
failure, and adjustment error
• When the PLAY button is pressed while ADJ. OK is
displayed, AUTO2 is executed.
MD-MT80W/90W/90/90C
• Whenever the DISP button is pressed in the continuous
playback mode, the indication changes as follows.
* Pre-mastered disc
Continuous playback (SUBQ address indication)
Continuous playback (C1 error indication)
Continuous playback (SUBQ address indication)
* Recordabl disc
Continuous playback (ADIP address indication)
Continuous playback (C1 error indication)
Continuous playback (ADIP error indication)
[ S Q ]
[ C E ]
[ S Q ]
[ A P ]
[ C E ]
[ A E ]
2. AUTO2 Mode
• When the STOP button is pressed while the AUTO2 menu
appears or during automatic adjustment, the mode changes
to the TEST mode stop state. At this time the adjustment
value is not output.
• Adjustment NG; Adjustment item out of range, and adjustment error.
• When the PLAY button is pressed while ADJ. OK is
displayed, TEST_PLAY is executed.
3. TEST-PLAY Mode
• When the STOP button is pressed while the TEST-PLAY
menu appears, or in TEST-PLAY or continuous playback
mode, the mode changes to the TEST mode stop state.
• When the PLAY button is pressed while the TEST-PLAY
menu appears, continuous playback is initiated from the
current pickup position.
• Whenever the DISP button is pressed in the TEST-PLAY
menu, the target address changes as follows.
0032 → 03C0 → 0700 → 08A0 → 0950 → 0032 →
When the PLAY
is displayed, continuous playback is performed after searching that address.
• Each time the MODE button is pressed while the TEST-PLAY
mode target address is displayed, the digit which is changed
by pressing the FAST FORWARD/FAST REVERSE /
button is changed as follows.
0032 → 0032 → 0032 → 0032 →
• When the FAST FORWARD button is pressed in the
TEST-PLAY mode target address is displayed, the digit of
address specified by the MODE button is set to +1h. (0 to F)
• When the FAST REVERSE button is pressed in the
TEST-PLAY mode target address is displayed, the digit of
address specified by the MODE button is set to -1h. (0 to F)
*
When the FAST FORWARD/FAST REVERSE /
button is held down, the setting changes continuously, one
cycle being 100 ms.
• When the BASS button is pressed in the continuous playback mode, the number of jump lines changes as follows.
1 → 10 → 384 → 1 →
* After the number of jump lines is indicated for one second,
the address indication is restored [ T R _ ]
• When the FAST FORWARD button is pressed in the
continuous playback mode, the specified number of lines
is jumped in the FWD direction.
• When the FAST REVERSE button is pressed in the
continuous playback mode, the specified number of lines
is jumped in the REV direction.
* When the FAST FORWARD/FAST REVERSE
button is held down, jump is repeated every
approx. 100 ms.
button is pressed while a target address
........
........
........
/
Continuous playback (ADIP address indication)
[ A P ]
4. TEST-REC Mode
• When the STOP button is pressed while the TEST-REC
menu appears, or in the TEST-REC mode or continuous
record mode, the mode changes to the TEST mode stop
state.
•
When the PLAY button is pressed while the TEST-REC
menu appears, the continuous record is initiated from the
current pickup position.
• Whenever the DISP button is pressed in the TEST-REC
menu, the target address changes as follows.
0032 → 03C0 → 0700 → 08A0 → 0950 → 0032 →
When the PLAY
address is displayed, continuous playback is performed
after searching that address.
• Whenever the MODE button is pressed in the TEST-REC
mode target address is displayed, the digit which is
changed by the FAST FORWARD/FAST REVERSE /
button changes as follows.
0032 → 0032 → 0032 → 0320 →
• When the FAST FORWARD button Is pressed in the
TEST-REC mode target address is displayed, the digit of
address specified by the BASS button is set to +1h.
• When the FAST REVERSE button is pressed in the
TEST-REC mode target address is displayed, the digit of
address specified by the BASS button is set to -1h.(0 to F)
*
When the FAST FORWARD/FAST REVERSE /
button is held down, the setting changes continuously,
one cycle being 100 ms.
button is pressed while a target
........
........
(0 to F)
– 17 –
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