MD-MS702MK
SERVICE MANUAL
No. S7860MDMS702M
MD-MS702MK
This Serivce Manual is for the MD-MS702MK, which is a
minormodification model of the MD-MS702, This manual,
therefore, describes only the changed points from the
service manual. Pleasa refer to the MD-MS702, service
manual (No. S1806MDMS701W) together with this manual.
MD-MS702
Page
ADJUSTMENT ......................................................................... 12
• In the interests of user-safety the set should be restored to its original
condition and only parts identical to those specified should be used.
WAVEFORMS OF MD CIRCUIT ............................................. 43
TROUBLESHOOTING ............................................................. 44
FUNCTION TABLE OF IC ....................................................... 47
CONTENTS
SPECIFICATIONS ................................................................................................................................................................. 2
BATTERY DISPOSAL(USA ONLY) ........................................................................................................................................ 2
NAMES OF PARTS ............................................................................................................................................................... 3
OPERATION MANUAL .......................................................................................................................................................... 4
QUICK GUIDE ........................................................................................................................................................................ 6
DISASSEMBLY...................................................................................................................................................................... 8
REMOVING AND REINSTALLING THE MAIN PARTS......................................................................................................... 9
EEPROM DATA LIST ........................................................................................................................................................... 10
DIGITAL EQ SETTING ......................................................................................................................................................... 11
BLOCK DIAGRAM ................................................................................................................................................................ 13
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................... 15
SCHEMATIC DIAGRAM ...................................................................................................................................................... 14
VOLTAGE ............................................................................................................................................................................. 17
WIRING SIDE OF P.W.BOARD............................................................................................................................................ 18
NOTES ON SCHEMATIC DIAGRAM ................................................................................................................................... 23
PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (FOR USA ONLY)
MD-R2
Page
SHARP CORPORATION
– 1 –
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
MD-MS702MK
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO
THE OPERATION MANUAL.
SPECIFICATIONS
General
Power source: DC 3.6 V (rechargeable lithium-ion
DC 5 V (AC adaptor)
AC 120V, 60 Hz
DC 3V: Optionally available battery
(commercially available, "AA"
DC 4.5V: Optionally available car adaptor,
Power consumption: 7 W (AC adaptor)
Output power: RMS; 20 mW (10 mW + 10mW)
(0.2% T.H.D.)
Charging time: Approx. 3.0 hours
(When using the AC adaptor included with
the unit)
Battery life:
When using two,
When using the
rechargeable battery (fully
charged) included with the
unit
Continuous recording:
Approx. 4.5 hours
Continuous play:
Approx. 6.5 hours
commerically available,
high capacity, "AA" size,
alkaline batteries (in the
optionally available
battery case)
Continuous recording:
The continuous recording time is for analog inputs when the
volume level 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 68 oF(20oC).
The operating time when using alkaline batteries may be different,
depending on the type and manufacturer of the batteries, and on
the operating temperature.
battery x 1)
case, AD-M70BC
size, alkaline battery x 2)
AD-CA20X
(for cars with a 12-24V DC
negative earth electrical system)
When using two, commercially
available, high capacity, "AA"
size batteries with the
rechargeable battery (fully
charged)
Approx. 4 hours
Continuous play:
Approx. 8 hours
Continuous recording:
Approx. 8.5 hours
Continuous play:
Approx. 14.5 hours
Input sensitivity:
Output level:
Recording
level
MIC H 0.25 mV 10 k ohms
MIC L 2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
Headphones — 10 mW + 32 ohms
LINE 300mV — 50 kohms
Reference input
Specified
output
(-12dB)
level
Maximum
output level
10 mW
Input
impedance
Load
impedance
Dimensions: Width: 3-7/16" (87.0 mm)
Height: 1-3/16" (29.4 mm)
Depth: 3-7/32" (81.5 mm)
Weight: 0.50 lbs.(227 g) with rechargeable battery
Input jack: Line/optical digital, microphone
(powered by the main unit)
Output jack: Headphones (impedance: 19 ohms)/
remote control unit
MiniDisc Recorder
Type: Portable MiniDisc recorder
Signal readout: Non-contact, 3-beam semi-conductor
Audio channels: Stereo 2 channels/monaural (long-play
Frequency response: 20 - 20,000 Hz (± 3 dB)
Rotation speed: Approx. 400 - 900 rpm
Error correction: ACIRC (Advanced Cross Interleave Reed-
Coding: ATRAC (Adaptive TRansformed
Recording method: Magnetic modulation overwrite method
Sampling frequency: 44.1 kHz (32 kHz and 48 kHz signals are
Wow and flutter: Unmeasurable
laser pick-up
mode) 1 channel
Solomon Code)
Acoustic Coding), 24-bit computed type
converted to 44.1 kHz, and then recorded.)
(less than ±0.001% W.peak)
BATTERY DISPOSAL (USA ONLY)
Contains nickel cadmium (or sealed lead) battery.Must be
recycled or disposed of properly.Remove the battery from the
product and contact federal or state environmental agencies
for information on recycling and disposal options.
Specifications for this model are subject to change without
prior notice
– 2 –
MD-MS702MK
Remote Control Unit
1. Synchro Recording Indicator
2. Character/Time Information Indicator
3. Record Indicator
4. Repeat Indicator:
5. Random Indicator
6. Disc Mode Indicator
7. Total Track Number Display
8. Track Number Indicator
9. Battery Indicator:
10. Headpones Socket
11. Hold Switch
12. Play Mode Button
13. Volume Buttons: +, -
14. Bass Button
15. Display Button
16. Play/Pause Button:
17. Stop/Power Off Button:
18. Fast Reverse/Fast Forward Buttons: /
Main Unit
1. Monaural Long-Play Mode Indicator
2. Record Indicator
3. Level Meter
4. Repeat Indicator:
5. TOC Indicator
6. Battery Indicator:
7. Random Indicator
8. Track Number Indicator
9. Character/Time Information Indicator
10. Synchro Recording Indicator
11. Disc Mode Indicator
12. Disc Name Indicator
13. Track Name Indicator
14. Remaining Recording Time Indicator
15. Total Track Number Display
NAMES OF PARTS
10
11
12
13
16 17 18 19 20 21
2
1
REC
6
SYNC
TOTAL
789
10
11
15
12
16
13
17
18
14
12345
14 15
1
RANDOM
3
4
5
6
7
8
9
16. Record/Track Mark Button
17. Volume/Name Select Buttons: +, -
18. Display/Lowercase Characters Button
19. Character Button
20. Stop/Power Off/Charge Button: /:OFF
21. Play/Pause Button:
22. Fast Reverse/Fast Forward/Recording Level Control/Cursor
Buttons: /
23. Enter/Fast Play/Synchro Button
24. Editer/Auto Mark/Time Mark Button
25. Eject Lever
26. Bass/Delete Button
27. Mode/Insert Button
28. Microphone Input Socket
29. Hold Switch
30. Rechargeable Lithium-Ion Battery Compartment
31. Optical/Line Input Soket
32. Headphones Soket
33. 5V DC Input Sokets
34. Battert Case Connection Terminals
22 23 24 25 26 27
29
28
31
32
30
34
33
– 3 –
MD-MS702MK
■ Rechargeable battery power
When the rechargeable battery is used for
the first time or when you want to use it
after a long period of non use, be sure to
charge it fully.
1Open the rechargeable battery com-
partment cover.
2Insert the rechargeable battery.
● Insert the side with the arrow first.
3Close the rechargeable battery com-
partment cover.
4Plug the AC adaptor into the AC outlet,
and then insert the plug on the AC
adaptor cord into the DC IN 5V jack.
5
Press the ■/:OFF button twice to begin
charging.
● “ ” will appear, and the battery will
begin charging.
● Battery charging will be complete in 3.0
hours. When the charging is com-
plete, “ ” will go out.
AC 120V, 60 Hz
To an AC outlet
POWER SOURCE
Notes:
● After charging is complete, the AC
adaptor may be left connected. (For ex-
ample, when charging at night)
● The battery will not be charged when-
ever the power to the main unit is
turned on.
● If the AC adaptor is removed from the
main unit or from the AC outlet while
charging, “ ” will not disappear for
about 1 minute. This is normal.
● Do not force open the rechargeable
battery door too far.
● Do not attach the optionally available
battery case when charging the internal
battery.
This unit can be used with 4 different power sources: a rechargeable battery, an AC
adaptor, an optionally available battery case (AD-M70BC), and an optionally available
car adaptor (AD-CA20X).
1
2
5
4
:OFF
5V
DC IN
Mark
To the
DC IN 5V
jack
Insert
securely,
all the
way in.
■ Checking the remaining
amount of battery charge
The remaining amount of battery charge is
shown by the battery indicator ( ) dur-
ing operation.
< How to read the battery indicator >
● When the battery is completely dis-
charged, the whole battery indicator will
flash. Recharge the battery or replace
the alkaline batteries with new ones.
● When the battery has completely run
out, “BATT EMPTY” (main unit) and “Lo
BATT” (remote control unit) will appear.
The power will be disconnected auto-
matically.
Notes:
● When the AC adaptor included with this
unit or an optionally available car adap-
tor is used, the battery indicator will not
be shown.
● The number of bars shown in the bat-
tery indicator may increase or de-
crease, depending on the operation
being performed. This is normal.
● When the rechargeable battery and the
alkaline batteries are used at the same
time, the rechargeable battery is used
first, and then the alkaline batteries.
Since the battery indicator shows the
remaining amount of the particular bat-
tery being used, the number of bars will
increase when the unit switches to the
alkaline batteries.
CONVENIENT OPERATION FEATURES
Battery indicator
Charging is
needed.
When the battery is
completely charged
When the battery needs charging, it is
impossible to start recording or editing.
RECORDING USING AN OPTIONALLY AVAILABLE DIGITAL
CABLE
There are cases where digital
recording may be impossible.
In the following cases digital recording is
impossible, even if you are using digital
cables.
When you attempt to make a new digital
recording from a track that was digitally
recorded on a MiniDisc
● MiniDiscs are designed so that only
first generation digital copies can
made, further digital copies are pre-
vented by the SCMS (Serial Copy Man-
agement System).
Recording
Playback
CD player, MD
player, etc.
Digitally recorded MiniDisc
Digital cable
Recording
Playback
Digital cable
Analog recording is
possible.
OPERA TION MANUAL
– 4 –
MD-MS702MK
Moisture condensation
In the following cases, condensation
may form inside the unit.
Shortly after turning on a heater.
When the unit is placed in a room
where there is excessive steam or
moisture.
When the unit is moved from a cool
place to a warm place.
When the unit has condensation inside,
the disc signals cannot be read, and the
unit may not function properly.
If this happens, remove the disc.
The condensation should evaporate in
approximately 1 hour. The unit will then
function properly.
TROUBLESHOOTING
If trouble occurs
When this product is subjected to strong
external interference (mechanical shock,
excessive static electricity, abnormal sup-
ply voltage due to lightning, etc.) or if it is
operated incorrectly, it may malfunction. 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 approximately 30 seconds.
4. Plug the AC adaptor back into the AC
outlet and retry the operation.
If strange sounds, smell or smoke come
out of the unit or an object is dropped into
the unit, remove the AC adaptor from the
AC outlet immediately and contact an au-
thorized Sharp service center.
Many potential “problems” can be resolved by the owner without calling a service tech-
nician. 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.
Is the AC adaptor disconnected?
Is the battery exhausted?
Is the unit in the safety mode?
Has condensation formed inside the unit?
Is the unit being influenced by mechanical shock or by
static electricity?
No sound is heard
from the headphones.
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?
When the operation
buttons are pressed,
the unit does not
respond.
Is the unit in the safety mode?
Is the battery exhausted?
Is the remote control unit plug or the headphone plug
inserted firmly?
Some sounds are
skipped.
Is the battery exhausted?
Is the unit being subjected to excessive vibration?
The MiniDisc cannot
be ejected.
Has the track number or character information been
written on the disc yet?
Is the unit in the recording or editing mode?
Recording and editing
are impossible.
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 while recording or editing?
Is the unit in the safety mode?
Even if the maximum recording
time of a MiniDisc has not been
reached, “DISC FULL” or “TOC
FULL” may be displayed.
When the number of tracks used
reaches the limit, regardless of the
remaining recording time, further
recording will be impossible.
(Maximum number of tracks: 254)
If a MiniDisc has been recorded or
edited repeatedly or if a MiniDisc has
scratches on it, it may not be possible
to record the maximum number of
tracks on it.
Even if the number of tracks and
the recording time have not
reached the limit, “DISC FULL” may
be displayed.
If there are scratches on a disc, the
unit will automatically avoid recording
in those areas. The recording time will
be reduced.
Even if several short tracks are
erased, the remaining recording
time may not show an increase.
When the remaining recording time of
a disc is displayed, short tracks less
than 8 seconds long may not be
included in the total.
Two tracks may not be combined in
editing.
For MiniDiscs on which repeated
recording and editing operations were
performed, the COMBINE function
may not work.
The total of the recorded time and
time remaining on a disc may not
add up to the maximum possible
recording time.
A cluster (about 2 seconds) is
normally the minimum unit of
recording. So, even if a track is less
than 2 seconds long, it will use about
2 seconds of space on the disc.
Therefore, the time actually available
for recording may be less than the
remaining time displayed.
If there are scratches on discs, those
sections will be automatically avoided
(no recording will be placed in those
sections). Therefore, the recording
time will be reduced.
When recorded tracks are played
back using the cue and review
operations, some sounds may be
skipped.
For MiniDiscs on which repeated
recording and editing were performed,
some sounds may be skipped while
cueing and reviewing.
While recording, a track number may
be created in the middle of a track.
If there are scratches or dust on a
MiniDisc, the track numbers following
that track will be increased by one.
MiniDiscs are recorded using a different system than is used for cassette tapes or DAT
recordings. Therefore, the following conditions may be encountered, depending on how
the disc has been recorded or edited. These are due to system limitations, and should
be considered normal.
MINIDISC SYSTEM LIMITATIONS
– 5 –
MD-MS702MK
Error messages Meaning Remedy
BATT EMPTY
●The battery has run down. ●Charge the rechargeable battery or
replace the alkaline batteries (or use
the AC adaptor for power).
BLANK DISC
●Nothing is recorded. ●Replace the disc with a recorded
disc.
Can't COPY
●No copy can be made because of
the SCMS copyright system.
●Record using the analog cable.
Can't EDIT
●A track cannot be edited. ●Change the stop position of the
track and then try editing it.
Can't REC
●Recording cannot be performed
correctly due to vibration or shock
in the unit.
●Re-record or replace it with another
recordable disc.
Can't WRITE ●Editing is impossible. ●Check the number of tracks.
DEFECT
●The disc is scratched. ●If the sound you hear is not correct,
try recording again.
●Replace the disc with another
recordable disc.
Din UNLOCK ● Poor connection of the digital cable. ● Connect the digital cable securely.
DISC ERROR ● The disc is damaged. ●Reload the disc or replace it.
DISC FULL
●The disc is out of recording space. ●Replace it with another recordable
disc.
HOLD
●The unit is in the safety mode. ● Return the HOLD switch to its
original position.
LOCKED
LOCK ERROR
●The EJECT lever was moved
during recording or editing.
●Turn off the power and remove the
MiniDisc.
NO DISC ●A disc has not been loaded. ●Load a disc.
PB DISC
PROTECTED
●The disc is write protected.
●You tried to record on a playback-
only disc.
●Move the write protection knob
back to its original position.
●Replace it with a recordable disc.
POWER ?
●Improper power is being supplied. ●Use one of the specified power
sources.
SORRY
●Since a track number is currently
being located or written to, the unit
cannot accept your command.
●Wait and then try the operation
again.
SYSTEM ERR
●The unit is malfunctioning and will
require service.
●For service, contact your local
Sharp authorized service center.
TEMP OVER
●The temperature is too high. ●Turn off the power, and wait for the
unit to cool.
TOC ERROR
●A large portion of the disc has been
damaged.
●Replace it with another recorded
disc.
TOC FULL
●There is no space left for recording
character information (track names,
disc names, etc.).
●Replace it with another recordable
disc.
Tr. Protect
●The track has been protected from
being erased.
●Edit the track with the device on
which it was recorded.
U TOC ERROR
●A large portion of the disc has been
damaged.
●There is an error in the recorded
signal.
●Replace it with another recorded
disc.
●Erase all of the signal errors, and
then try recording again.
? DISC
●A disc which contains data other
than music was played.
●There is an error in the signal from
the disc.
●A disc which contains non-music
data cannot be played.
●Replace it with another recorded
disc.
ERROR MESSAGES
Rechargeable battery power
Alimentación de la batería recargable
1
2
Mark
Marca
3
4
AC 120V, 60Hz
To an AC outlet
120V CA, 60Hz
A un tomacorriente
de CA
5
Press the ■/:OFF button twice to begin charging.
Pulse dos veces el botón ■/:OFF para iniciar la
carga.
AC power
Alimentación de CA
AC 120V, 60Hz
To an AC outlet
120V CA, 60Hz
A un tomacorriente
de CA
To the DC IN
5V jack
Al enchufe
DC IN 5V
To the DC IN 5V jack
Al enchufe DC IN 5V
PORTABLE MINIDISC RECORDER
MD-MS702
Connection
Conexión
Analog recording
Grabación analógica
(RIGHT)
(DERECHO)
Connecting cable included with this unit
Cable de conexión incluido con este aparato
MK
RL
(LEFT)
(IZQUIERDO)
To the OPTICAL/LINE IN jack
Al enchufe OPTICAL/LINE IN
Digital recording
Grabación digital
Playback side
Lado de reproducción
To the line output jacks
on a stereo
A los enchufes de
salida de línea de un
equipo estéreo
Recording side
Lado de grabación
Quick-Guide
Guía rápida
Recording side
Lado de grabación
To the OPTICAL/LINE IN jack
Al enchufe OPTICAL/LINE IN
Optical digital
cable (ADM1DC, available separately)
Cable óptico
digital (ADM1DC, disponible por
separado)
DIGITAL OUT
To the optical output
jack on a CD player
etc.
Al enchufe de salida
óptica de un
reproductor de discos compactos, etc.
Playback side
Lado de reproducción
OPTICAL OUT
To the optical output
jack on an MD player
etc.
Al enchufe de salida
óptica de un reproductor de minidiscos, etc.
Optical digital
cable (ADM2DC, available
separately)
Cable óptico digital (AD-M2DC,
disponible por
separado)
– 6 –
MD-MS702MK
Recording
Grabación
Recording from CDs or MDs (Synchro recording)
Grabación de discos compactos o minidiscos
(Grabación sincronizada)
1
Connect the external equipment.
Conecte el equipo externo.
2
Insert a recordable MiniDisc.
Inserte un minidisco grabable.
3
Press the REC button.
Pulse el botón REC.
4
While playing sound from the external equipment connected to this unit, press the or button to adjust
the recording level.
Mientras se reproduce el sonido del equipo externo
conectado a este aparato, pulse el botón o
para ajustar el nivel de grabación.
0 dB
–4 dB
5
Press the ENTER/F.PLAY/SYNCHRO button.
Pulse el botón ENTER/F.PLAY/SYNCHRO.
Flashing
Parpadeo
6
Begin playback on the source equipment.
Inicie la reproducción en el equipo fuente.
Recording from a tuner or a CD (Manual recording)
Grabación de un sintonizador o disco compacto
(Grabación manual)
1
Put the unit in the recording stand-by mode. (Perform
steps 1 - 4 in the “Synchro recording” section.)
Ponga el aparato en el modo de espera de grabación.
(Realice los pasos 1 - 4 de la sección "Grabación
sincronizada".)
2
Press the button.
Pulse el botón .
To stop recording:
Press the ■/:OFF button.
● If the unit is left alone after the recording has stopped,
the power will be turned off approximately 2 minutes
later.
After recording:
Press the ■/:OFF button while in the stop mode.
To remove the MiniDisc:
Turn off the power and move the EJECT lever in the direction indicated by the arrow.
Para detener la grabación:
Pulse el botón
●
Si el aparato no se utiliza después de finalizar la
grabación, la alimentación se desconectará 2 minutos
después aproximadamente.
Después de la grabación:
Pulse el botón
Para extraer el minidisco:
Desconecte la alimentación y mueva la palanca EJECT en
el sentido indicado por la flecha.
■
/:OFF.
■
/:OFF estando en el modo de parada.
■ Important
● Do not wear your headphones when you are
crossing streets or near traffic.
● Do not use your headphones while driving a
motor vehicle, it may create a dangerous traffic
hazard and may be illegal. Remember to obey
all of the safety rules in your area.
● Do not play the unit at a high volume. Hearing
experts advise against extended play at high
volume levels.
● If you experience ringing in your ears, reduce
the volume or discontinue use.
■
Importante
●
No se ponga auriculares cuando atraviese calles ni cuando esté cerca del tráfico.
●
No emplee los auriculares mientras conduce un
vehículo, porque puede crear situaciones
peligrosas en el tráfico y puede ser ilegal.
Recuerde que debe respetar las reglas de
seguridad de su zona.
●
No reproduzca sonido en el aparato a altos
niveles de volumen. Los expertos dicen que es
perjudicial la reproducción continuada a altos
niveles de volumen.
●
Si nota timbres en los oídos, reduzca el volumen
o no utilice el aparato.
■ Volume setting
Reduce the volume before starting to play.
MiniDiscs, compared to ordinary cassette tapes,
have very little noise. If the volume is adjust according to your usual expectations of noise, you may
damage your hearing due to the high volume.
■
Ajuste del volumen
Reduzca el volumen antes de iniciar la
reproducción. Los mínidiscos, en comparación con
las cintas de casete nomales, tienen muy poco
ruido. Si se ajusta el volumen de acuerdo con el
ruido que puede esperarse normalmente, podría
dañarse los oídos debido al alto volumen.
Playing a MiniDisc
Reproducción de un minidisco
Loading and playing a MiniDisc
Inserción y reproducción de un minidisco
Headphones
Auriculares
For the left (L)
For the right (R)
Para la
Para la
derecha (R)
izquierda (L)
2
To the
jack
Al enchufe
Remote control unit
Controlador remoto
●
The power will be turned on automatically, and playback will start from the first track. (Auto-play function)
●
La alimentación se conectará automáticamente, y la
reproducción empezará desde la primera pista.
(Función de reproducción automática)
●
After playback of the last track has finished, the unit
will stop automatically.
●
Después de terminar la reproducción de la última
pista, el aparato se detendrá automáticamente.
Playback does not start when a MiniDisc is inserted:
Press the button.
In the following cases, the auto-play function will not
work.
●
When the recordable MiniDisc write protection tab is
closed (page 9)
●
When the auto-play function has been canceled
(page 35)
La reproducción no empieza cuando se inserta un
minidisco:
Pulse el botón .
En los casos siguientes, la función de reproducción
automática no se activará.
●
Cuando esté cerrada la lengüeta de protección contra escritura del minidisco grabable (página 9)
●
Cuando haya sido cancelada la función de
reproducción autom ática (pág ina 35 )
1
Track number
Número de pista
Track name
Nombre de pista
(Nothing will be displayed for MiniDiscs that
do not contain track names.)
(No se visualizará nada para los minidiscos
que no tienen nombres de pistas.)
3
Volume
Volumen
Tone
Tono
BASS
Volume (0 - 30)
Volumen (0 - 30)
Bass sounds are emphasized slightly.
BASS 1
Bass sounds are emphasized more.
BASS 2
Bass sounds are emphasized even more.
BASS 3
Bass emphasis is canceled.
BASS OFF
Los sonidos graves se realzan ligeramente.
BASS 1
Los sonidos graves se realzan más.
BASS 2
Los sonidos graves se realzan aún más.
BASS 3
El realce de los graves se cancela.
BASS OFF
To interrupt playback:
Press the button during playback.
VOL /
NAME
BASS/DEL
● To resume playback, press the button again.
To stop playback:
Press the ■/:OFF button.
To turn off the power:
Press the ■/:OFF button while in the stop mode.
● If the unit is not operated for at least 2 minutes
while in the stop mode, the power will be turned
off automatically.
To remove the MiniDisc:
Turn off the power and move the EJECT lever in the
direction indicated by the arrow.
Para interrumpir la reproducción:
Pulse el botón durante la reproducción.
●
Para reanudar la reproducción, pulse de nuevo el
botón .
Para detener la reproducción:
Pulse el botón
Para desconectar la alimentación:
Pulse el botón
parada.
●
Si el aparato no se utiliza durante un mínimo de
2 minutos estando en el modo de parada, la
alimentación se desconectará automáticamente.
Para extraer el minidisco:
Desconecte la alimentación y mueva la palanca
EJECT en el sentido indicado por la flecha.
■
/:OFF.
■
/:OFF estando en el modo de
– 7 –
MD-MS702MK
DISASSEMBLY
Caution on Disassembly
Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:
1. Take the battery and minidisc out of the unit.
2. When disassembling the machine, be sure to withdraw
the power plug from the socket in advance.
3. When disassemble the parts, remove the nylon band or
wire holder as necessary.
To assemble after repair, be sure to arrange the wires as
they were.
If a screw of different length is fitted to the MD mecha-
nism (the screw of the part to be fitted to the MD
mechanism chassis), it may contact the optical pickup,
resulting in malfunction.
4. When repairing, pay due attention to electrostatic charges
of IC.
STEP
REMOVAL
1 Bottom Cabinet 1. Open the battery Lid. 8-1
2 Top Cabinet 1. Screw .....................(B1) x4 8-1
3 Main PWB 1. Screw .................... (C1) x2 8-2
4 Mechanism Unit 1. Lift the left side, and remove 8-3
PROCEDURE
2. Screw .....................(A1) x6
2. Flat Cable ...............(B2) x2 8-2
2. Flat Cable ...............(C2) x3
in the arrow direction.
Note:
1. Handle carefully the main PWB and flexible PWB.
After removing the flexible PWB (*1) for optical pickup from
the connector, wrap the front end of flexible PWB in conductive aluminum foil so as to protect the optical pickup from
electrostatic damage.
2. When removing the mechanism from the cabinet or when
installing it, it is advisable to
rotate the unit lock plate to lower the holder section.
FIGURE
(A1)x1
Ø1.4x2mm
(B1)x1
Ø1.4x2mm
Center
Cabinet
(C2)x1
Top Cabinet
Main PWB
Pull
(C2)x1
Mechanism Unit
Pull
Pull
Pull
Figure 8-1
(C1)x1
Ø1.7x2.5mm
Pull
Pull
Figure 8-2
(A1)x2
Ø1.4x2mm
(C2)x1
Pull
Pull
(A1)x1
Ø1.4x2mm
Ø1.4x2mm
(B2)x1
Pull
(B1)x1
Bottom Cabinet
Ø1.4x2mm
(B1)x2
Ø1.4x2mm
(C1)x1
Ø1.7x2.5mm
(A1)x2
(B2)x1
Figure 8-3
– 8 –
REMOVING AND REINSTALLING THE MAIN PARTS
(B1)x2
Remove the solder joint
Stop Washer
(B2)x1
Drive Gear
(B3)x1
Lift Motor
(B4)x1
ø1.4x2.2mm
Lead wire
(D1)x2
Ø1.4x1.8mm
Pickup Unit
Magnetic Head
Solder
joint
(D2)x2
Remove the mechanism according to the disassembling methods 1 to 4. (See Page 8.)
MD-MS702MK
(A2)x3
ø1.4x2.8mm
How to remove the spindle motor (See Fig. 9-1.)
1. Remove the solder joint (A1) x 1 of flexible PWB.
2. Remove the screws (A2) x 3 pcs. and remove the spindle
motor.
How to remove the lift motor (See Fig. 9-2.)
1. Remove the solder joint (B1) x 2 of lift motor lead wire.
2. Remove the stop washer (B2) x 1 pc., and remove the drive
gear (B3) x 1 pc.
3. Remove the screw (B4) x 1pc., and remove the lift motor.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is raised in search mode.)
How to remove the sled motor (See Fig. 9-3.)
1. Remove the solder joint (C1) x 2 of sled motor lead wire.
2. Remove the screws (C2) x 2 pcs., and remove the sled
motor.
Note:
Take care so that the motor gear is not damaged.
(If the gear is damaged, noise is raised in search mode.)
How to remove the magnetic head
(See Fig. 9-4.)
1. Remove the screws (D1) x 2 pcs.
2. Remove the soldering joint (D2) x2 pcs.
Note:
Mount carefully so as not to damage the magnetic head.
How to remove the optical pickup unit
(See Fig. 9-5.)
1. Remove the screw (E1) x 1 pc.
Flexible PWB
solder joint
(A1) x1
(C1)x2
Mecha Flexible PWB
solder joint
Figure 9-1
Figure 9-2
Spindle Motor
MD Mechanism
(C2)x2
ø1.4x1.2mm
Sled Motor
(E1)x1
ø1.7x2.5mm
Shaft
Pickup Unit
Figure 9-5
Washer x2
Figure 9-3
Figure 9-4
– 9 –
MD-MS702MK
EEPROM DATA LIST
TEMP setting
Item display Set values
T M _ _ Calculate values
BASS setting
Item display Set values
B S 1 _ 0 2 H
B S 2 _ A 4 H
B S 3 _ C 4 H
Fucus setting
Item display Set values
F G _ _ 6 3 H
F F 1 _ 7 0 H
F F 2 _ F 0 H
F Z H _ E D H
F L n _ 0 9 H
D J G _ 1 4 H
F R V _ A A H
F P f _ 8 8 H
F L V _ 1 9 H
W T f _ 2 0 H
F S S _ 0 2 H
Tracking setting
Item display Set values
T G _ _ 2 6 H
T F 1 _ 7 0 H
T F 2 _ E 0 H
T F S _ 0 0 H
T B o _ 2 B H
T B t _ 1 7 H
T K o _ 2 B H
T K t _ 1 9 H
T D o _ 6 7 H
T D t _ 2 A H
S C o _ 0 0 H
S C t _ 4 0 H
S C m _ 5 3 H
D B O _ 0 0 H
C L p _ 1 2 H
C L r _ 2 4 H
W T m _ E 0 H
Spindle setting
Item display Set values
S P G _ 1 4 H
S P i _ A A H
S P m _ 7 9 H
S P o _ 4 F H
S P 1 _ 1 0 H
S P 2 _ 6 0 H
S P 3 _ F 2 H
S P 4 _ F 2 H
S P 5 _ 1 0 H
S P D _ 6 1 H
S P R _ C 4 H
Sled setting
Item display Set values
S L G _ 9 4 H
S L 2 _ 3 0 H
S L M _ 4 F H
S L V _ 3 6 H
S K k _ 4 3 H
S K t _ 4 0 H
S K m _ 4 3 H
ADJ. SET setting
Item display Set values
C O K _ A 0 H
F A T _ C 0 H
T A T _ 3 E H
C A T _ 2 0 H
F A B _ 0 0 H
DEQ. SET setting
Item display Set values
H Q 1 _ 9 0 H
H Q 2 _ 9 0 H
H S G _ 1 1 H
H S O _ F D H
L Q 1 _ 9 0 H
L Q 2 _ 9 0 H
L S G _ 1 1 H
L S O _ 0 0 H
G Q 1 _ 9 8 H
G Q 2 _ 8 4 H
G S G _ 1 1 H
G S O _ 0 0 H
G Q R _ 0 0 H
Control setting
Item display Set values
C T 0 _ 4 9 H
C T 1 _ C 8 H
P W L _ 0 0 H
R C 0 _ C 0 H
R C 1 _ F E H
S Y C _ A 6 H
D R 1 _ A 0 H
D R 2 _ A 6 H
I N 1 _ D 4 H
I N 2 _ 6 7 H
C T R _ 6 D H
C T 2 _ 9 4 H
C T 3 _ 3 3 H
C T 4 _ 6 4 H
C T 5 _ 7 4 H
C T 6 _ 0 8 H
C T 7 _ 4 2 H
S P M _ 0 0 H
M S L _ 0 0 H
R S L _ 0 0 H
– 10 –
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