MD-MT15/15C/15H/15W/161E/18H
– 1 –
Page
SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT15W/15H/18H/161E ONLY) ..................................................... 2
SPECIFICATIONS ................................................................................................................................................................. 3
NAMES OF PARTS ............................................................................................................................................................... 4
OPERATION MANUAL .......................................................................................................................................................... 5
QUICK GUIDE (MD-MT15 ONLY) ......................................................................................................................................... 8
DISASSEMBLY.................................................................................................................................................................... 10
NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 11
TYPES OF TRANSISTOR AND DIODE .............................................................................................................................. 11
VOLTAGE ............................................................................................................................................................................ 12
BLOCK DIAGRAM ............................................................................................................................................................... 13
SCHEMATIC DIAGRAM ...................................................................................................................................................... 14
WIRING SIDE OF P.W.BOARD........................................................................................................................................... 17
WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 22
PARTS GUIDE/EXPLODED VIEW
PACKING OF THE SET (MD-MT15 FOR U.S.A. ONLY)
PACKING METHOD (MD-MT161E ONLY)
SERVICE MANUAL
SHARP CORPORATION
No. S7946MDMT15//
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
MD-MT15(S)
MD-MT15C(S)
MD-MT15H(RD)
MD-MT15H(S)
MD-MT15W(S)
MD-MT161E(S)
MD-MT18H(GR)
• In the interests of user-safety the set should be restored to its
original condition and only parts identical to those specified be
used.
Illustration: MD-MT15/15C
Illustration: MD-MT15H/15W
Illustration: MD-MT161E/18H (Only printing is different.)
CONTENTS OF MD-MT15/15C/15H/15W/161E/18H
The machine MD-MT15/MT15C/MT15W is a modification of
MD-MT20/MT20C/MT20W the difference is the Top Cabinet.
Its performance and operation are identical with those of MD-
MT20/MT20C/MT20W. For details refer to the service manual
(No.S6943MDMT20//) for MD-MT20/MT20C/MT20W.
MD-MT20/MT20C/MT20W Page
REMOVING AND REINSTALLING THE MAIN PARTS 11
ADJUSTMENT.............................................................. 12
TROUBLE SHOOTING................................................. 37
FUNCTION TABLE OF IC ............................................ 40
CIRCUIT DESCRIPTION.............................................. 42
The machine MD-MT15H/MT161E/MT18H is a modification
of MD-MT20H/MT16E the difference is the Top Cabinet. Its
performance and operation are identical with those of MD-
MT20H/MT16E. For details refer to the service manual (No.
S5933MDMT20H/) for MD-MT20H/MT16E.
MD-MT20H/MT16E Page
REMOVING AND REINSTALLING THE MAIN PARTS.. 9
ADJUSTMENT.............................................................. 10
TROUBLE SHOOTING................................................. 35
FUNCTION TABLE OF IC ............................................ 38
CIRCUIT DESCRIPTION .............................................. 40
MD-MT15/15C/15H/15W/161E/18H
– 2 –
Figure 2-1 Figure 2-2
Precaution to be taken when replacing and servicing the Laser Pickup.
The AEL (Accessible Emission Level) of Laser Power Output for this model is specified to be lower than Class I Requirements.
However, the following precautions must be 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.
SAFETY PRECAUTION FOR SERVICE MANUAL (MD-MT15W/15H/18H/161E ONLY)
VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.
VARNING! Osynlig laserstralning när denna del är öppnad och spärren är urkopplad. Betrakta ej strälen.
Magnet head
Optical pick-up Top Cabinet
For MD-MT15W/15H/18H
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
For MD-MT161E
For MD-MT15H/18H
Laser Diode Properties
●Material: GaAIAs
●Wavelength: 785 nm
●Pulse time:
Read mode; 0.8 mW Continuous
Write mode; max. 10 mW 0.5S
min. cycle 1.5S
Repetition
CAUTION
●This Portable MiniDisc Recorder is classified as a CLASS 1 LASER product.
●The CLASS 1 LASER PRODUCT label is located on the bottom.
●
Use the Portable MiniDisc Recorder only in accordance with the instructions given in
this manual and do not attempt to interfere with the interlock switch or make any
other ad
j
ustment as this ma
y
result in exposure to hazardous radiation.
For MD-MT15W
Magnet Head Laser Beam
Optical Pick-Up
Main PWB
Spindle motor
Mechanism
Chassis
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 houising (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.
MD-MT15/15C/15H/15W/161E/18H
– 3 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO
THE OPERATION MANUAL.
Specifications for this model are subject to change without prior
notice
MD-MT15/15C MD-MT15H
■General
Power source: DC 5V: AC adaptor (AC 120V, 60 Hz)
DC 3.0V: Commercially available, “AA” size (LR6), alkaline
battery x 2
DC 2.4V: Optional Rechargeable Nickel-Metal Hydride bat-
tery (AD-T20BT) x 1
DC 4.5V: Optional car adaptor, AD-CA20X
(for cars with a 12-24V DC negative ground elec-
trical system)
Power consumption: 7.5 W (AC adaptor)
Output power: RMS; 20 mW (10 mW + 10 mW)
(0.2% T.H.D.)
Charging time: Approx. 4 hours (90 %)
Approx. 6 hours (fully charged)
(When using the AC adaptor included with the unit)
Battery life:
When using the optional re-
chargeable battery AD-T20BT
(fully charged)
When using two, commercially
available, high capacity, “AA”
size (LR6), alkaline batteries
Continuous recording:
Approx. 7.5 hours
Continuous recording:
Approx. 7.5 hours Continuous play:
Approx. 12 hours
Continuous play:
Approx. 15 hours
MD-MT15W
MD-MT18H
SPECIFICATIONS
MD-MT161E
MD-MT15H/18H/161E
Power source: DC 3.0V: Commercially available, “AA” (LR6) size, alkaline
battery x 2
DC 2.4V: Optional Rechargeable Nickel-Metal Hydride bat-
tery (AD-T20BT) x 1
DC 4.5V: Optional car adaptor, AD-CA20X
(for cars with a 12-24V DC negative earth electri-
cal system)
DC 5V:
Optional AC adaptor (AD-T20APH, AC 220 - 230V,
50/60 Hz)
Power consumption: 7 W (Optional AC adaptor)
Output power: RMS; 20 mW (10 mW + 10 mW)
(0.2% T.H.D.)
Charging time: Approx. 4 hours (90 %)
Approx. 6 hours (fully charged)
(When using the AC adaptor)
Power source: DC 3.0V: Commercially available, “AA” size (LR6), alkaline
battery x 2
DC 2.4V: Optional Rechargeable Nickel-Metal Hydride bat-
tery (AD-T20BT) x 1
DC 4.5V: Optional car adaptor, AD-CA20X
(
for cars with a 12-24V DC negative earth electrical
system)
DC 5V: Optional AC adaptor (AD-T20APE, AC 230 - 240V,
50/60 Hz)
Power consumption: 7 W (Optional AC adaptor)
Output power: RMS; 20 mW (10 mW + 10 mW)
(0.2% T.H.D.)
Charging time: Approx. 4 hours (90 %)
Approx. 6 hours (fully charged)
(When using the AC adaptor)
Power source: DC 5V:
AC adaptor (AC 220 - 230V, 50/60 Hz)
DC 3.0V: Commercially available, “AA” (LR6) size alkaline
battery x 2
DC 2.4V: Optional Rechargeable Nickel-Metal Hydride bat-
tery (AD-T20BT) x 1
DC 4.5V: Optional car adaptor, AD-CA20X
(for cars with a 12-24V DC negative earth electri-
cal system)
Power consumption: 7 W (AC adaptor)
Output power: RMS; 20 mW (10 mW + 10 mW)
(0.2% T.H.D.)
Charging time: Approx. 4 hours (90 %)
Approx. 6 hours (fully charged)
(When using the AC adaptor included with the unit)
Power source: DC 3.0V [Commercially
available, “AA” size (LR6),
alkaline battery x 2]
DC 4.5V [Optional car
adaptor, AD-CA20X (for
cars with a 12-24V DC
negative earth electrical
system)]
Output power: RMS; 20 mW (10 mW + 10
mW) (0.2% T.H.D.)
Dimensions: Width 87.9 mm (3-7/16")
Height 29.8 mm (1-3/16")
Depth 79.7 mm (3-1/8")
Weight: 180 g (0.40 lbs.) without
battery
Input socket: Line/optical digital, micro-
phone (powered by the
main unit)
Output socket: Earphones (impedance:
32 ohms)
Battery life:
●The continuous recording time is for
analogue 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 val-
ues when the unit is used at an ambient
temperature of 20°C (68°F).
●The operating time when using alkaline
batteries may be different, depending on
the type and manufacturer of the bat-
ter
y
, and on the operatin
g
temperature.
Input sensitivity:
When using two, commercially available, high
capacity, “AA” size (LR6), alkaline batteries
Continuous recording: Approx. 7.5 hours
Continuous play: Approx. 15 hours
Output level:
Specified
output
Maximum
output
level
Load
impedance
Earphones
—
10 mW +
10 mW 32 ohms
LINE
250 mV
(-12dB) —
10 k ohms
Recording
level Reference input
level Input
impedance
MIC H 0.25 mV 10 k ohms
MIC L 2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
■MiniDisc Recorder
Unmeasurable (less than ±0.001% W. peak)
●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°F (20°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.
Input sensitivity: Recording level Reference input level Input impedance
MIC H 0.25 mV 10 k ohms
MIC L 2.5 mV 10 k ohms
LINE 100 mV 20 k ohms
Output level: Specified
output Maximum
output level Load
impedance
Headphones — 10 mW + 10 mW 16 ohms
LINE 250 mV
(-12dB) —10 k ohms
Dimensions: Width: 3-7/16" (87.9 mm)
Height: 1-3/16" (29.8 mm)
Depth: 3-1/8" (79.7 mm)
Weight: 0.40 lbs. (180g) without battery
Input jack: Line/optical digital, microphone (powered by the main unit)
Output jack: Headphones (impedance: 19 ohms)
Type: Portable MiniDisc recorder
Signal readout: Non-contact, 3-beam semi-conductor laser pick-up
Audio channels: Stereo 2 channels/monaural (long-play mode) 1 channel
Frequency response: 20 – 20,000 Hz (± 3 dB)
Rotation speed: Approx. 400 – 900 rpm
Error correction: ACIRC (Advanced Cross Interleave Reed-Solomon Code)
Coding: ATRAC (Adaptive Transform Acoustic Coding), 24-bit com-
puted type
Recording method: Magnetic modulation overwrite method
Sampling frequency:
44.1 kHz (32 kHz and 48 kHz signals are converted to 44.1 kHz,
and then recorded.)
Wow and flutter:
Output level: Specified
output Maximum
output level Load
impedance
Earphones — 10 mW + 10 mW 32 ohms
LINE 250 mV
(-12dB) —10 k ohms
Dimensions: Width: 87.9 mm (3-7/16")
Height: 29.8 mm (1-3/16")
Depth: 79.7 mm (3-1/8")
Weight: 180g (0.40 lbs.) without battery
Input socket: Line/optical digital, microphone (powered by the main unit)
Out
p
ut socket: Earphones
(
impedance: 32 ohms
)
MD-MT15/15C/15H/15W/161E/18H
– 4 –
NAMES OF PARTS
Illustration: MD-MT15/15C
123456
7
8
9
10
11
12
13
14 15 16
33
34
35
22
17
28
18 20 21
23
27262524
19
29 30
32
31
1. Monaural Long-Play Mode Indicator
2. Record Indicator
3. Level Meter
4. Fast Play Indicator
5. Repeat Indicator
6. TOC Indicator
7. Battery Indicator
8. Random Indicator
9. Track Number Indicator
10. Character/Time Information Indicator
11. Synchro Recording Indicator
12. Disc Mode Indicator
13. Disc Name Indicator
14. Track Name Indicator
15. Remaining Recording Time Indicator
16. Total Track Number Indicator
17. Edit/Auto Mark/Time Mark Button
18. Mode Button
19. Display/Character Select Button
20. Bass/Delete Button
21. Enter/Fast Play/Synchro Button
22. Volume Up/Cursor Button
23. Volume Down/Cursor/Charge Button
24. Record/Track Mark Button
25. Fast Reverse/Recording Level Down/
Name Select Button
26. Stop/Power Off Button
27. Play/Pause Button
28.Fast Forward/Recording Level Up/
Name Select Button
29. Open Lever
30. Headphones Jack (MD-MT15/15C)
31. Optical/Line Input Jack
32. Microphone Input Jack
33. Hold Switch
34. 5V DC Input Jack
35. Battery Cover
30. Earphones Socket (MD-MT15H/15W/161E/18H)
MD-MT15/15C/15H/15W/161E/18H
– 5 –
OPERATION MANUAL
RECORDING USING THE OPTICAL DIGITAL CABLE
This is the method used for recording digi-
tal signals from CDs exactly as they are
stored on the original. Compared to record-
ings made from analog inputs, digital re-
cordings have extremely high-quality
sound.
1
Connect the external equipment.
2
Start recording.
Synchro recording:
Before starting a synchro recording,
perform the following steps on the
equipment connected to this unit.
(1) First, put it in the playback mode.
(2) Next, put it in the pause mode.
(3) Finally, position it at the beginning
of the track you want to record.
(1) Insert a recordable MiniDisc, and
then press the REC button.
(2) Press the ENTER/SYNC button.
(3) Start the playback on the equipment
connected to this unit.
Manual recording:
(1) Insert a recordable MiniDisc, and
then press the REC button.
(2) Press the button.
●When recording from digital inputs,it
is not necessary to adjust the record-
ing level.
Notes:
●This unit incorporates a sampling rate
converter.
When this unit is connected to digital
equipment such as a DSS tuners or a
DAT tape recorder that use a different
sampling frequency (32 kHz or 48 kHz),
recordings can still be made. (The sam-
pling frequency of this unit is 44.1 kHz.)
●When making a digital recording from a
portable CD player (if the player has a
sound skip prevention function and this
function is turned on) the optical output
will drop out and digital recording will not
be possible. Be sure to turn the sound
skip prevention function off.
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 re-
corded on a MiniDisc.
●MiniDiscs are designed so that only first
generation digital copies can be made.
Further digital copies are prevented by
the SCMS (Serial Copy Management
System).
Playback Digital cable
CD player, MD
player, etc.
Digitally recorded MiniDisc
Analog recording is
possible.
Recording
Playback Digital cable Recording
MD player
POWER SOURCE
1
3
2
■Alkaline batteries power
●Use two commercially available alkaline
batteries (LR6, “AA” size).
1
Open the battery cover.
●
Slide the battery cover as far as it will
go to the outside and then lift to open it.
If the battery cover is lifted without be-
ing slid all the way out, it may break.
2
Insert two alkaline batteries according
to the polarity marked on the bottom of
the unit.
●Installing the batteries incorrectly may
cause the unit to malfunction.
3
Close the battery cover.
You can power this unit with AC adaptor or commercially available alkaline batteries
(LR6, “AA” size).
You can also power this unit with a rechargeable battery (AD-T20BT) or car adaptor
(AD-CA20X) which are available separately.
■AC power (For MD-MT15/15C/18H)
1
Connect the cord from the AC adaptor
to the DC IN 5V jack on the unit.
2
Plug the AC adaptor into an AC outlet.
Notes:
●When there is thunder or lightning in your
vicinity, unplug the AC adaptor from the
AC outlet.
●When the unit is not in use for extended
periods, remove the AC adaptor from the
AC outlet.
●Never use an AC adaptor other than the
one specified. Otherwise, problems or
serious hazards may be created.
●Do not bend, twist or tie the power cord
or put heavy objects on top of it.
●Be sure to hold the plug when removing
it. If you pull on the cord, it may break, or
the unit may malfunction.
AC 120V, 60 HzInsert securely,
all the way in.
To the DC IN 5V jack
(MD-MT15/15C)
AC 220-230V,
50/60 Hz
Insert securely,
all the way in.
To the DC IN 5V socket
(MD-MT18H)
●AC adaptors of MD-MT15H/15W/161E
are option parts.
MD-MT15/15C/15H/15W/161E/18H
– 6 –
Many potential “problems” can be resolved by the owner without calling a service techni-
cian.
If something seems to be wrong with this product, check the following before calling your
authorized SHARP dealer or service center.
■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 out-
let.
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 autho-
rized SHARP service center.
PROBLEM CAUSE
The unit does not turn
on.
●Is the AC adaptor disconnected?
●Is the battery exhausted?
●Is the unit in the hold 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 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 hold mode?
●Is the battery exhausted?
●Is the battery exhausted?
●Is the unit being subjected to excessive vibration?
●Has the track number or character information been
written 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 oc-
cur while recording or editing?
●Is the unit in the hold mode?
●Is an optical signal being output from the external equip-
ment?
Read the operation manual for the external equipment.
No sound is heard from
the headphones.
When the operation but-
tons are pressed, the
unit does not respond.
Some sounds are
skipped.
The MiniDisc cannot be
ejected.
Recording and editing
are impossible.
TROUBLESHOOTING
■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.
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
accidentally drained.
CONVENIENT OPERATION OF THE UNIT
< How to read the battery indicator >
●When the battery is completely dis-
charged, the battery indicator will flash.
Recharge the battery or replace the al-
kaline batteries with new ones.
●When the battery has run completely out,
“BATT EMPTY” will appear. Then, the
power will be disconnected automatically.
Notes:
●When using the unit with alkaline bat-
teries or a rechargeable battery, the bat-
tery indicator will not correctly display
the remaining capacity for approximately
10 seconds after the power has been
turned on.
●When an AC adaptor or a car adaptor is
used, the battery indicator will not be
shown.
●The number of bars shown in the bat-
tery indicator may increase or decrease,
depending on the operation being per-
formed. This is normal.
■To prevent the unit from being
operated by mistake
To avoid accidental operation of the unit,
use the hold function.
Move the HOLD switch to the safety posi-
tion (direction indicated by the arrow).
●When the unit is in the hold mode, press-
ing the buttons will have no affect.
●To cancel the hold mode, move the
HOLD switch away from the safety po-
sition (the opposite direction of the ar-
row).
Battery indicator
Since the battery level is very low, you
cannot start recording or editing.
When the battery
level is high When the battery
level is very low
■Checking the remaining amount
of battery level
The remaining amount of battery level is
shown by the battery indicator ( ) dur-
ing operation.
MD-MT15/15C/15H/15W/161E/18H
– 7 –
●The battery is run down.
●Nothing is recorded.
●No copy can be made because of
the SCMS copyright system.
●A track cannot be edited.
●
Recording cannot be performed cor-
rectly due to vibration or shock in the unit.
●Editing is impossible.
●The disc is scratched.
●Poor connection of the digital cable.
●The disc is out of recording space.
●The unit is in the hold mode.
●The OPEN lever was moved during
recording or editing.
●A disc has not been loaded.
●You tried to record on a playback-
only disc.
●Improper power is being supplied.
●The MD is write protected.
●The disc is damaged.
●Since a track number is currently
being located or written to, the unit
cannot accept your command.
●You have come to the conclusion
that the unit is out of order.
●The temperature is too high.
●A large portion of the disc has been
damaged.
●There is no space left for recording
character information (track names,
disc names, etc.).
●The track has been protected from
being erased.
●A large portion of the disc has been
damaged.
●There is an error in the recorded sig-
nal.
●A disc which contains data other than
music was played.
●There is an error in the signal from
the disc.
●Charge the rechargeable battery or
replace the alkaline batteries (or use
the AC adaptor for power).
●Replace the disc with a recorded disc.
●Record using the analog cable.
●Change the stop position of the track
and then try editing it.
●Re-record or replace it with another
recordable disc.
●Check the number of tracks.
●If the sound you hear is not right, try
recording again.
●Replace the disc with another re-
cordable disc.
●Connect the digital cable securely.
●Replace it with another recordable
disc.
●Return the HOLD switch to its origi-
nal position.
●Turn off the power and remove the
MiniDisc.
●Load a disc.
●Replace it with a recordable disc.
●Use one of the specified power
sources.
●Move the write protection knob back
to its original position.
●Reload the disc or replace it.
●Replace it with another recorded disc.
●Wait for a while and try the opera-
tion again.
●To have it repaired, go to the distribu-
tor where you purchased the unit.
●Turn off the power, and wait for a
while.
●Replace it with another recorded
disc.
●Replace it with another recordable
disc.
●Edit the track with the device on
which it was recorded.
●Replace it with another recorded
disc.
●Erase all of the signal errors, and
then try recording again.
●A disc which contains non-music
data cannot be played.
●Replace it with another recorded
disc.
ERROR MESSAGES
Error messages Remedy
BATT EMPTY
BLANK DISC
Can’t COPY
Can’t EDIT
Can’t REC
Can’t WRITE
DEFECT
Din UNLOCK
READ ERROR
DISC FULL
HOLD
LOCKED
LOCK ERROR
NO DISC
PB DISC
POWER ?
SORRY
SYSTEM ERR
TEMP OVER
TOC ERROR
TOC FULL
Tr. Protect
U TOC ERROR
? DISC
Meaning
PROTECTED
When the number of tracks used reaches
the limit, regardless of the remaining re-
cording time, further recording will be
impossible.
(Maximum number of tracks: 255)
If a MiniDisc has been recorded or ed-
ited repeatedly or if a MiniDisc has
scratches on it, it may not be possible to
record the maximum number of tracks on
it.
If there are scratches on a disc, the unit
will automatically avoid recording in those
areas. The recording time will be reduced.
When the remaining recording time of a
disc is displayed, short tracks less than
12 seconds long may not be included in
the total.
For MiniDiscs on which repeated record-
ing and editing operations were per-
formed, the COMBINE function may not
work.
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 re-
cording may be less than the remaining time
displayed.
If there are scratches on discs, those sec-
tions will be automatically avoided (no record-
ing will be placed in those sections). There-
fore, the recording time will be reduced.
For MiniDiscs on which repeated record-
ing and editing were performed, some
sounds may be skipped while cueing and
reviewing.
If there are scratches or dust on a
MiniDisc, the track numbers following that
track will be increased by one.
MINIDISC SYSTEM LIMITATIONS
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.
Even if the maximum recording
time of a MiniDisc has not been
reached, “DISC FULL” or “TOC
FULL” may be displayed.
Even if the number of tracks and
the recording time have not
reached the limit, “DISC FULL”
may be displayed.
Even if several short tracks are
erased, the remaining recording
time may not show an increase.
Two tracks may not be combined
in editing.
The total of the recorded time and
time remaining on a disc may not
add up to the maximum possible
recording time.
When recorded tracks are played
back using the cue and review op-
erations, some sounds may be
skipped.
A track number can be created in
the middle of a track.
MD-MT15/15C/15H/15W/161E/18H
– 8 –
QUICK GUIDE (MD-MT15 ONLY)
1
Check the supplied accessories /
Compruebe los accesorios suministrados
2
Power source /
Alimentación
PORTABLE MINIDISC RECORDER
Quick Guide/Guía rápida
MD-MT15
■ Rechargeable battery power (Separately available)
■
Alimentación de la batería recargable (Disponible por separado)
• AC 120V, 60Hz
•
120V CA, 60Hz
■ Alkaline battery power (Commercially available)
■
Alimentación de la pila alcalina (Disponible en las tiendas del ramo)
●Carrying Bag x 1
●
Caja para el
transporte x 1
●Analog Cable x 1
●
Cable analógico x 1
●AC Adaptor x 1
●
Adaptador de CA x 1
● Headphones x 1
●
Auriculares x 1
■AC power
■
Alimentación de CA
•AC 120V, 60Hz
•
120V CA, 60Hz
1243 5
123
MIC IN
PLUG IN
POWER
3
Connection /
Conexión
■ Analog recording
■
Grabación analógica
■ Digital recording
■
Grabación digital
■ Microphone
■
Micrófono
Stereo microphone
Micrófono estéreo
Recording side
Lado de grabación
OPTICAL/
LINE IN
• To the line output jacks
on a stereo
•
A los enchufes de
salida de línea de un
equipo estéreo
LR
(RIGHT)
(DERECHO)
• Analog cable included with this unit
•
Cable analógico suministrado con este
(LEFT)
(IZQUIERDO)
Playback side
Lado de reproducción
Recording side
Lado de grabación
OPTICAL/
LINE IN
•Optical digital cable
(AD-M1DC, available separately)
•
Cable óptico digital
(AD-M1DC, disponible por separado)
Playback side
Lado de reproducción
Recording side
Lado de grabación
DIGITAL OUT
AUDIO OUT
MD-MT15/15C/15H/15W/161E/18H
– 9 –
2
1
2
13
3
4
Mientras se produce el sonido del equipo externo
conectado a este aparato, pulse el botón o
para ajustar el nivel de grabación.
4
Recording /
Grabación
To turn off the power:
Para desconectar la alimentación:
To remove the MiniDisc:
Para extraer el minidisco:
Turn off the power and move the OPEN lever in the
direction indicated by the arrow.
Desconecte la alimentación y mueva la palanca OPEN en el
sentido indicado por la flecha.
Press the ENTER/SYNC button.
Pulse el botón ENTER/SYNC.
Begin playback on the source equipment.
Inicie la reproducción en el equipo fuente.
Press the REC button.
Pulse el botón
REC.
When a sound, such as a person speaking, is
picked up by the microphone, recording will
begin automatically.
Connect the stereo microphone to the MIC IN jack.
Insert a recordable MiniDisc.
Inserte un minidisco grabable.
■ Recording from CDs or MDs (Synchro recording)
■
Grabación de discos compactos o minidiscos (Grabación sincronizada)
■ Recording from the microphone (Mic synchro recording)
■
Grabación de un micrófono (Grabación sincronizada con micrófono)
Press the ENTER/SYNC button to select the
synchro recording level. (This level can be
changed, even while recording.)
Press the ■/:OFF button while in the stop mode.
Pulse el botón
■
/:OFF estando en el modo de parada.
Connect the external equipment.
Conecte el equipo externo.
1
Insert a recordable MiniDisc.
Inserte un minidisco grabable.
2
Press the REC button.
Pulse el botón REC.
3
While playing sound from the external
equipment connected to this unit, press the
or button to adjust the recording
level.
4
5
6
1
2
3
4
5
6
Press the ■/:OFF button.
Pulse el botón
■
/:OFF.
To stop recording:
Para detener la grabación:
Conecte el micrófono estéreo al enchufe MIC IN del
aparato principal.
Pulse el botón o para ajustar el nivel
de grabación.
Press the or button to adjust the
recording level.
Pulse el botón ENTER/SYNC para seleccionar el
nivel de la grabación sincronizada. (Este nivel podrá
cambiarse incluso durante la grabación.)
Cuando el micrófono capte un sonido, el de una
persona que hable por ejemplo, la grabación
empezará automáticamente.
5
Playing a MiniDisc /
Reproducción de un minidisco
2
13
4
Insert the headphones plug into the jack.
Push the plug all the way in.
1
Insert a MiniDisc.
Inserte un minidisco.
2
●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)
To interrupt playback:
Para interrumpir la reproducción:
Press the button during playback.
●To resume playback, press the button again.
Pulse el botón
durante la reproducción.
●
Para reanudar la reproducción, pulse de nuevo el botón
.
To turn off the power:
Para desconectar la alimentación:
Press the button.
In the following cases, the auto-play function will not work.
●When the recordable MiniDisc write protection tab is
closed.
●When the auto-play function has been canceled.
Playback does not start when a MiniDisc is inserted:
La reproducción no empieza cuando se inserta un
minidisco:
6
Sound control /
Control del sonido
Adjust the bass level.
Each time the BASS button is pressed, the tone will be
switched as follows:
• Volume (0 - 30)
•
Volumen (0 - 30)
To stop playback:
Para detener la reproducción:
Press the ■/:OFF button.
Pulse el botón
■
/:OFF.
Press the ■/:OFF button while in the stop mode.
Pulse el botón
■ /
:OFF estando en el modo de parada.
Ajuste el volumen.
Pulse el botón VOLUME + para aumentar el volumen y el
botón VOLUME – para reducirlo.
Adjust the volume.
Press the VOLUME + button to increase the volume and
the VOLUME – button to decrease the volume.
BASS 1 -------Bass sounds are emphasized slightly.
BASS 2 -------Bass sounds are emphasized more.
BASS 3 -------Bass sounds are emphasized even more.
BASS OFF ---- Bass emphasis is canceled.
BASS 1 -------
Los sonidos graves se realzan ligeramente.
BASS 2 -------
Los sonidos graves se realzan más.
BASS 3 -------
Los sonidos graves se realzan aún más.
BASS OFF ----
El realce de los graves se cancela.
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
●
Cuando haya sido cancelada la función de reproducción
automática
Ajuste el nivel de los graves.
Cada vez que pulse el botón BASS, el tono cambiará de la
forma siguiente:
Inerte la clavija de auriculares en el enchufe .
Empuje completamente hacia adentro la clavija.
MD-MT15/15C/15H/15W/161E/18H
– 10 –
1 Bottom Cabinet 1. Screw .....................(A1) x7 10-1
2 Top Cabinet 1. Open the Top cabinet. 10-1
2. Screw .....................(B1) x4
3. Screw .....................(B2) x1
3 Key Switch/LCD 1. Flexible PWB......... (C1) x2 10-2
4 Mechanism Unit 1. Flexible PWB......... (D1) x2 10-2
2. Raise the rear part, and ..... 10-3
remove in the arrow direction.
5 Main PWB 1. Flat cable................(E1) x1 10-2
2. Screw .....................(E2) x2
6 Audio PWB
1.
Screw ...................... (F1) x3 10-4
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 restore the
initial location of wires.
Since the screws are small, incorrect fixing may result in
malfunction.
3. When repairing, pay utmost attention to static electricity
of IC.
REMOVAL PROCEDURE
STEP FIGURE
Figu re 10-1
Figure 10-2
Figure 10-3
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.
Mechanism Unit
Figure 10-4
(C2)x2
pull
pull pull
pull
pull
pull
pull
pull
LCD
(D1)x1
Main
PWB
(E2)x2
ø1.7x2.5mm
Audio
PWB
Mechanism
Unit
(E1)x1
Key Switch
Put the fold on the connector, and
apply with the felt. Sagging may
result in contact with the sheet metal.
Felt
(D1)x1*
Flexible PWB
for optical pickup
(F1)x3
ø1.7x2.5mm
Audio PWB
Open Lever
Bottom
Cabinet
LCD Key Switch
Top Cabinet
(A1)x2
ø1.4x2mm
(A1)x2
ø1.4x2mm
(A1)x2
ø1.4x2mm (A1)x1
ø1.4x2mm
(B1)x2
ø1.4x2mm
(B2)x1
ø1.4x2mm
(B1)x2
ø1.4x2mm
OpenOpen
MD-MT15/15C/15H/15W/161E/18H
– 11 –
SW401 EJECT OFF—ON
SW402 HOLD OFF—ON
SW403 DISC LID OPEN OFF—ON
SW902 DISC PROTECT OFF—ON
NOTES ON SCHEMATIC DIAGRAM
• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.
• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to electro-
lytic capacitor, the expression “capacitance/withstand volt-
age” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis with no signal given.
• Parts marked with “ ” ( ) are important for
maintaining the safety of the set. Be sure to replace these
parts with specified ones for maintaining the safety and
performance of the set.
POSITION
REF. NO DESCRIPTION
Figure 11 TYPES OF TRANSISTOR AND DIODE
1SS372
2SA17457
2SC4213 B
RN1103
TOP
VIEW
TOP VIEW
SB10015 C
TOP VIEW
B
(G)
(3)
E
(S)
1
C
(D)
(2)
1SS361
TOP VIEW
1SS360
TOP VIEW
SBE803
2SA1873 GR
TOP VIEW
MD-MT15/15C/15H/15W/161E/18H
– 12 –
PIN
NO. VOLTAGE
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
PIN
NO. VOLTAGE PIN
NO. VOLTAGE
100
PIN
NO. VOLTAGE PIN
NO. VOLTAGE
IC401 PIN
NO. VOLTAGE PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
1
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
PIN
NO. VOLTAGE
Preform the measurement on
the IC401 pin 37 in the TEST
mode with GND short-circuited.
(LCD is in "TEST" state.)
PIN
NO. VOLTAGE
IC101
0.72V
0.72V
0.72V
0.72V
1.24V
1.24V
0.71V
1.24V
1.24V
1.24V
1.24V
1.24V
2.5V
2.5V
0.18V
2.5V
2.5V
0V
0V
1.48V
2.35V
0V
0V
2.5V
1.24V
1.24V
1.24V
1.24V
1.24V
1V
1.24V
1.24V
1.24V
NC
1.25V
1.25V
0.17V
1.24V
1.24V
1.24V
1.24V
2.5V
0V
0V
1.24V
1.24V
1.24V
0V
IC201
1V 0V 0V
IC501
2.5V 0V
IC701
IC821
1.25V
IC841
NC
IC202
IC351
IC402
IC871
IC702
IC354
IC353
IC601
IC651
IC703
IC771
IC801
IC802
IC901
3
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
3
100
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
3
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
3
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
3
2
4
5
3
1
2
4
5
6
7
8
9
10
11
12
3
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
3
1
2
4
5
6
7
8
3
1
2
4
5
3
1
2
4
5
3
1
2
4
5
3
1
2
4
5
6
7
8
9
10
9
10
11
12
13
14
3
1
2
4
5
3
1
2
4
5
6
7
8
3
1
2
4
5
6
3
1
2
4
5
6
7
8
3
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
3
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
3
1
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
3
1
2
4
5
6
3
0.88V
2.5V
1.27V
0V
1.25V
1.25V
1.25V
1.25V
1.25V
1.3V
2.2V
2V
0V
0V
0V
0V
1V
0V
0V
0V
0V
0V
0V
0V
0V
0.49V
1.44V
1.13V
2.56V
0.6V
1V
1V
0.8V
0.8V
0.8V
0V
2.13V
1.4V
0.51V
0.51V
1.56V
1.1V
1.75V
2.57V
1.74V
1.61V
0V
1.93V
1V
0.91V
0V
0V
0V
0V
2V
0V
0V
0V
0V
0.14V
2V
0V
0.9V
0.9V
1.66V
1V
2V
0V
1V
1V
2V
0V
0V
0V
0V
0V
2V
0V
2V
1V
2V
0V
0V
1V
2V
2V
0V
2.36V
0.2V
1.65V
0V
0.1V
0.7V
1.35V
1.76V
0.32V
2.27V
2.36V
0.2V
2.5V
0V
2.35V
NC
0.18V
0V
0.23V
0V
2.23V
2.12V
2.04V
2.25V
2.35V
0.18V
0V
0V
0V
2.35V
0.2V
2.35V
2.26V
0.14V
1.6V
0V
0.08V
2.32V
2.34V
0V
2.32V
0V
2.34V
2.34V
0.3V
2.35V
2.35V
2.28V
2.35V
2.35V
2.35V
1.08V
1.13V
0V
2.34V
2.32V
2.34V
2.34V
2.1V
2.32V
2.32V
1.93V
1.6V
1.26V
1.7V
0.27V
0V
0V
2.1V
2.72V
2.72V
2.35V
0V
2.34V
0V
2.35V
0V
2.35V
2.35V
0V
0V
2.35V
0V
0V
0V
–
2.34V
2.34V
0.82V
1.46V
1.33V
2.34V
2.34V
2.34V
0V
1.62V
0V
0V
2.32V
2.33V
2.33V
2.34V
1.7V
1.5V
0.12V
2.33V
2.33V
2.34V
0.18V
2.33V
2.5V
0V
0V
0V
0V
0V
0V
1V
1V
1V
0V
0V
2.5V
0V
0V
0V
0V
0V
0V
0V
0V
2.5V
2.5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
–2.48V
0V
0V
2.72V
0.86V
0V
0V
0V
0.94V
1.16V
1.15V
1.13V
0V
0.54V
4.49V
0V
0.41V
1V
1V
1.28V
1.63V
2.57V
1.76V
1.44V
1.44V
0.6V
0.6V
0.6V
2.56V
0.6V
1V
1V
1V
0V
0V
4.42V
0V
0V
0V
9.66V
2.34V
NC
4.46V
4.64V
4.48V
NC
0V
4.63V
4.42V
0V
0.9V
–
–
0V
0V
0V
2.74V
–
–
0V
0V
–
–
2.74V
2.34V
0V
–
–
0V
0V
0.26V
2.34V
4.42V
0V
0.9V
4.42V
0V
4.46V
1V
1.8V
1.9V
1.7V
1.7V
0V
0V
0V
4.72V
0V
0V
0V
0V
0V
0V
0V
0V
4.72V
0V
0V
0V
4.72V
4.72V
0V
0V
0V
4.72V
0V
0V
2.5V
9.67V
2.74V
NC
0V
0V
0V
0V
–
NC
–
NC
0V
0V
0V
0V
0V
0V
2.74V
2.74V
NC
2.5V
0V
0.2V
0V
0V
0.73V
0.73V
0V
–
2.44V
2V
0V
2.48V
0.67V
0V
2.35V
0V
2.5V
0V
0V
0V
0V
0V
0V
0V
0V
0V
4.49V
4.64V
0V
2.34V
5V
5V
0.7V
5V
5V
5V
0V
0V
0.97V
0V
0V
0V
0V
1V
2.35V
0V
4.72V
0V
0V
0V
4.72V
4.72V
0V
0V
2.34V
0V
0V
0V
–2.87V
0V
0V
2.74V
0.85V
0V
0V
0V
PIN
NO. VOLTAGE
IC431
1
2
4
3
2.34V
2.34V
NC
0V
PIN
NO. VOLTAGE
IC805
1
2
4
5
6
7
8
3
2.15V
1.38V
–
–2.86V
0V
0V
–1.49V
2.73V
PIN
NO. VOLTAGE
IC806
1
2
4
5
6
3
0V
0V
4.44V
0V
0V
0V
PIN
NO. VOLTAGE
IC807
1
2
4
5
6
3
2V
1.98V
1.98V
0V
0V
0.94V
PIN
NO. VOLTAGE
IC808
1
2
4
5
6
3
2.15V
0.56V
0.56V
0V
0.56V
2.74V
PIN
NO. VOLTAGE
1
IC851
NC
2
4
5
31.16V
0V
1.17V
2.33V
PIN
NO. VOLTAGE
1
IC872
4.64V
2
4
34.64V
NC
0V
VOLTAGE
MD-MT15/15C/15H/15W/161E/18H
– 13 –
Figure 13 BLOCK DIAGRAM
IC651
HEAD UP/DOWN
DRIVER
LB1930M
VCC VS
IC351
HEAD DRIVER
74ACT02T
VCC VEE
2.8V
UP CONVERTER
IC871
S8324A28
IC872
S80813LN
CHARGING CIRCUIT
IC803 FDT439N
IC805 NJM022V
IC806 NDC631N
IC807 RN4904
IC808 HN1C01FU
M903
HEAD
UP/DOWN
MOTOR
IC841
XC62HS02
2.35V REGULATOR
IC821
IR3M09N
DC/DC
CONVERTER
IC501
AD/DA CONVERTER
AK4519VF
M902
SLED
MOTOR
IC101
SIGNAL
PROCESSOR
IR3R55
2.5V REGULATOR
IC771 62GR2522
2.5V
REGULATOR
IC820
62FP2502
IC401
SYSTEM
MICROCOMPUTER
IX0298AW
RIPPLE
FILTER
VCC VEE
IC702
62GR4522
4.5V
REGULATOR
OPIC
LASER
PICK
HEAD
M901
SPINDLE
MOTOR
IC201
ENCODE/DECODE/
SERVO ATRAC
LR37811
+2.7V
+2.5V
T F
+2.5V
+2.7V
+2.7V
VDD
+2.0V
+2.7V
–2.7V
AVCC
+2.5V
+7~+10V
+2.5V
J703
HEADPHONES
LINE
IC802 FDC634P
IC801 HN1C01FU
OVER VOLTAGE
REVERSE CONNECTION
PROTECTION CIRCUIT
J801
DC IN JACK
(4~5.5V)
1.7~3.4V
+2.35V
LCD UNIT
KEY OPERATION UNIT
IC901
SPINDLE MOTOR
DRIVER
BA6966FV
IC703
AUDIO AMP.
IR3R54N
IC701
AUDIO AMP.
IR3R54N
IC601
4CH PWM DRIVER
MPC17A39
VM
IC402
EEPROM
S29L294A
+4.5V
VCC
VS
IC202
IX2567AF
4MBIT D-RAM
+2.5V
+4.5V
OPTICAL IN
UNIT
J701
OPTICAL IN J701
LINE IN
J702
MIC IN
(READY FOR
PLUG/IN
POWER)
2.0V
REGULATOR
IC200
62FP2002
1, 3, 4, 5,
6,19,20
17
16 35
VCC VG
13
24,26
29,31
6,8 5,9,10,14
23,27,28,32
13,14
24,42
40 3
26-29,
32-37,
39-46
1-9,
11-19
14
8,11
4
1
7,9 3,4
57,66
74 15 6
19 5
20 17
20 17
10
624 L-CH
22 R-CH
19
Q721
3
1,13
1-2
2,15-17,
19-22
6-9
1-12
1-3
14-16 52,
69,
70,
83,
84
9,
11,
13,
42
74
2
2
17-24
50
31
5
3
5
2
8
5
8
52,53
10
+2.7V
82-84,86,
89-100 62
3
3
4
2
1,2,23,24,14 2
7
3
NC
SW402
HOLD
SW902
DISC
PROTECT
55
92
4
SW401
EJECT
SW403
DISC LID
OPEN
97
98
73
12
PLAYBACK SIGNAL
RECORD SIGNAL
+B
F871
T0.5A L 63V
MM
M
IC354
CPH5608
HEAD DRIVER
IC353
FTD2005
HEAD DRIVER
31
36
Q873
NDS332P
FETIC
Ni - MH Battery
or
Dry Battery
(2 pieces)
+2.7V
+2.7V
1, 20-30, 73, 93-95
R-CH
L-CH 2
R-CH 3
L-CH
3
VCC
L-CH
5
18 R-CH
MD-MT15/15C/15H/15W/161E/18H
– 14 –
• The numbers 1 to 18 are waveform numbers shown in page 22.
A
B
C
D
E
F
G
H
123456
Figure 14 SCHEMATIC DIAGRAM (1/3)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 11.
P14 P15 P16
L921
100mA
TP665
L206
100mA
L205
100mA
L202
100mA
L201
100mA
CK105
C209
22P(CH)
IC354
CPH5608
5 4 3
2
1
D351
SBE803
5
4 3
2
1
R414
1K
R413
1K
TP408
R415
1K
R
1
R412
10K
TP409
TP407
TP413
R422
100K
R461
100K
D431
1SS361
C431
0.47 R431
330K
I
C
S
E
S
8
2
1
IC353
FTD2005
8 7 6 5
4 3 2 1
C361
0.039
C351
56P(CH)
R361
15
TP351 R351
5.6
C357
0.1
IC351
HEAD DRIVER
74ACT02T
11
10
9
8 7
6
5
4
3
2
1
C354
0.1 C353
10/6.3
Q901
RN1113
R920
100K
R403
1K
R600
56
IC651
HEAD UP/DOWN
DRIVER
LB1930M
10
9
8
7
6 5
4
3
2
1
C200
1
TP664
TP666
CN601
16
9 8 7 6 5 4 3 2 1
TP212
C204
0.47
TP187
TP204
TP602
TP901
R922
100K
R921
330
TP400
TP412
TP202
C651
1
C622
0.1
C602
1
C601
1
L602
4.7µH
L601
4.7µH
C610
1
C609
1
C608
1
TP601 L608
4.7µH
L609
4.7µH
L610
4.7µH
IC601
4CH PWM DRIVER
MPC17A39
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TP207
SW402
HOLD
R601
56K
C605
0.1
TP610
C600
22/6.3
L600
2.2µH
TP417
TP416
CK106
TP151
R404
100K
R222
1M
XL201
33.868MHz
C211
5P(CH)
C212
5P(CH)
CK207
L209
100mA
L203
100mA
R207
680
L204
100mA
TP203
CK224
CK222
L603
4.7µH
L604
4.7µH
C603
1
C604
1
XL401
4.19MHz
R408
100K
R407
10K
TP404
TP403
L171
10µH
C171
100/6.3
C130
0.1
C112
0.033
TP206
R106
56K
TP145
C207
0.1
C203
0.1
R204
1K
TP116
TP117
TP120
CN101
9
8
7
6
5
4 3 2 1
TP122
TP121
TP111
TP118
TP110
TP114
TP103
TP108
TP102
TP106
TP109
TP101
TP105
TP115
TP119
TP663
TP662
TP661
TP660
TP659
TP658
TP657
TP656
TP655
TP654
TP653
TP652
TP651
C122
270P
(CH)
C121
270P
(CH)
C124
390P
C123
390P
R105
390K
TP209
TP210
CK201
CK202
CK203
CK206
CK205
CK204
R206
270K
C205
0.1
R205
330K
C165
0.033 R161
1.2K
C903
3.3
R906
270K
R905
100K
C910
0.033
C908
0.22
C906
0.0022
C909
0.033
C905
0.0022
C907
0.0022
IC901
SPINDLE MOTOR
DRIVER
BA6966FV
11 10
9
8
7
6
5
4
3
2
1
R902
1
R901
1
R904
33K
C911
0.1
R903
330
R907
180K
R908
100K
R909
10K C902
0.01
C103
1 TP144
IC401
SYSTEM
MICROCOMPU
T
IX0298AWZ
Z
C100
10/6.3
L100
10µH
TP139
R154
1.2K
CK101
C161
1
TP100
R103
22K
R104
22K
CK104
C102
1
C111
0.0033
IC101
RF SIGNAL
PROCESSOR
IR3R55
48
4
40
35
34
33
32
31
30
29
28
27
26
25
24
9
8
7
6
5
4
3
2
1
IC201
ENCODE/
DECODE/SERVO
ATRAC
LR37811
1
00
76
10
9
8
7
6
5
4 3 2 1
CK112
TP201
TP208
C110
0.22
C201
1
R102
22K
R101
22K
CK103
C106
0.22
CK102
C109
1 C107
0.012
C104
0.027
Q101
2SA17457
CK107
TP131
TP130
TP133
CK108
TP132
DSPRST
PCNT1
SYD0
SYD1
SYD2
SYD3
SYD4
SYD5
SYD6
SYWR
SYRD
SYRS
SYD7
DSPDAT
DSPSTB
DSPSCK
VCCLASER
VCCHEAD
SPVM
SL-
SL+
T+
T-
F-
F+
VCCPWM
VCCPU
VCCRF
ELON
AUDATA
PBAULT
HREC
EFMO
DISCPR
PDCNT
INNSW
LDCNT2
LDCNT1
X176KO
X176KO
SLDRF
SLDRR
TRDRF
TRDRR
FODRR
FODRF
DCNT1
SPDRF
SPDRR
EFMO
INNSW
SPIN
HDON
RFLAT
OPICGA
LDON
INPGCK
INPGIN
MCPGIN
PBMUTE
BEEP
AUSCLK
RCAULT
RCPCNT
VCCENDEC
LDCNT1
LDCNT2
SYRS
SYRD
SYWR
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SYD0
DINT
CIN
SENSE
FOK
SPDRR
SPDRF
SLDRR
SLDRF
TRDRR
TRDRF
FODRR
FODRF
XRT
AUDATA
AUSCLK
RFLAT
TEMP
LDON
LDVAR
OPICGA
_LCDRST
PLVGIN
PLVON
SCKO
P32
_DCEXT
_ELON
GND
VCC
D1
S
G1
G2
D2
D2
S1
G2
S2
D1
G1
S2
S1
G
I1
VCC
I2
G
O1
O2
RI4
FI4
FI3
RI3
VD4
FO4
PGND
RO4
VD4
VD3
RO3
PGND
FO3
VD3
GND
LG
VC
VG
RI2
FI2
FI1
RI1
VD2
FO2
PGND
RO2
VD2
VD1
RO1
PGND
FO1
VD1
OE
PS
CLK
AGND
JPNP
EXTAL
VCC
_STBY
_NMI
MD2
WDTOVF
MD1
MD0
BUZOUT
VSS
RCPCNT
VSS
VSS
EEPD
V
O
MAIN PWB-A1
UOUT
VM
VOUT
WOUT RF
RIB
STBY
BRK+
BRK- CSL2
CSL1
CST
COM
WIN
VIN
UIN
FG
VCC
GND
T+
T-
F+
F-
PCNT1
PBOPON
RCLAT
PBLAT
RADAT
RACLK
RFLAT
OPICGA
EFMO
TCRS
RAA3
RAA2
RAA1
RAA0
RAA4
RAA5
RAA6
RAA7
RAA8
RAOEX
RACASX
RAD2
RAD3
VDD2
DGND
RAA9
RARASX
RAWEX
RAD1
RAD0
VDD1
DGND
AVCC
EFMI
DGND
VDD1
VDD1
DGND
BIN
EIN
FIN
AIN
AGND
TCG
SPDRR
SPDRF
SLDRR
SLDRF
TRDRR
TRDRF
X176KO
TEST2
FODRF
FODRR
TEST0
TEST1
WBI
VBAT
SYRDX
SYWRX
SYSD7
SYSD6
SYSD5
SYSD4
SYSD3
SYSD2
SYSD1
SYSD0
RSTX
DINTX
MCCK
COUT
SENSE
FOK
SFSY
SBSY
SBO
SBCK
TEMON
TOTMON X700KO
LDCNT2
EMPH1
OPTCNT
DAPON
ADPON
VXI
VPD
X1I
X1O
DIN
DOUT
VDD3
DGND
LRCK
BCLK
DFCK ADDATA
DADATA
FEMON
SYRS
PLCK
ACRCER
RAA10
LDCNT1
LOGIC
LPF HPF
R
and
SW DIFF
DIFF
EFM
AGC
ADIP
AGC
BIAS
RF1
RF2
RF3
RF4
REFI
REFO
RFADD
TCGI
AIN
BIN
EIN
FIN
BIAS
AVCC
STBY
DISC
SGAIN
AGND
DGND
DTEMP
LATCH
CLOCK
DATA
DVCC
FOUT
EOUT
BOUT
AOUT
TCGO
WBO
22KI
22KO
ADLPFO
ADIPO
ADIPI
ADAGC
ADAG
RF2-1
EFMO
EFMI
AVCC
AGND
EFMAGC
EFMAGI
TTR
GOUT
ROUT
EFMMON
T-
F+
T+
F-
INPGCK
_INPGI
_MCPGI
TEST1
TEST0
_KHOLD
_REC
DSPSCK
DSPDAT
DSPSTB
D
D
S
C
_RESET
VCC
XTAL
INNSW
LDON
SYRS
_SYRD
_SYWR
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SYD0
EEPK
_EPCS
MECHANISM FLEXIBLE
PWB ASS'Y
V
U
W
COM
-
-
+
+
HEAD
M901
SPINDLE
MOTOR
M903
HEAD UP/
DOWN
MOTOR
M902
SLED
MOTOR
M
M
M
OPIC
VCC
MP/R
B
A
LDON
COM
CVCC
VCC
DGND
DGND
LDVAR
AGND
E
F
T-
F+
T+
F-
RF2
RF4
RF3
RF1
10
11
12
+B
+B
+B
+B
+B
+B
+B
17
16
15
14
13
2
18
3
4
1
11
10
9
+B
1
2
1
2
3
4
32
1
+8
PH901
PHOTE
INTERRUPER
+B
+B
+B
IC353:IC354
HEAD DRIVER
SW902
DISC PROTECT
PLAYBACK SIGNAL
RECORD SIGNAL
OPTICAL PICKUP UNIT
FLEXBLE
PWB
1
16
FLEXIBLE
PWB
IC351
IC901
IC601
47 46 45 44 43 42 41 39 38 37
36
23
22
21
20
19
18
17
13 14 15 16
10 11 12 13 14 15 16 17 18 19 20 21 22
10 11 12 13 14 15 16 17 18 19 20 21 22
1 9
8
7
6
5
4 3 2
12
13
14
15
14
13
12 11 10
12
13
14
15
16
17
18
19
20
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
99
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52 53
54
55 56 57 58
59 60
61 62 63 64
65
66 67 68 69
70
71 72 73 74 75
9
10
11
12 13
14
15 16 17
18 19
20
21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51 52 53 54 55 56 5758 59 60 61 62 63 64 65 66 67
MD-MT15/15C/15H/15W/161E/18H
– 15 –
78 9 10 11 12
Figure 15 SCHEMATIC DIAGRAM (2/3)
P14 P15 P16
TP064B
TP070B
TP086B
TP087B
TP088B
C
C506
1000P
TP082
TP089
TP087
TP085
TP084
TP083
TP080
TP079
TP078
TP086
TP093
TP092
TP091
TP090
TP073
TP063
TP064
TP065
TP066
TP067
TP068
TP069
TP070
TP062
TP061
TP077
TP076
TP075
TP074
TP072
TP071
CN702
9
8
7
6
5
4
3
2
1
TP088
R467
18K
Q461
2SC4738 GR
L206
100mA
L205
100mA
L202
100mA
L201
100mA
R279
100
R277
39K
C827
22/6.3
R460
68K
R833
47
C834
0.1
D831
1SS372
C831
0.1
C832
0.1
C209
22P(CH)
TP418
TP483
TP489
TP488
TP486
TP487
TP482
TP481
C481
1
C482
1
CN482 9
8
7
6
5
4
3
2
1
IC808 CHARGING CIRCUIT
HN1C01FU
6
5
4
3
2
1
C877
1
R466
560K
C866
1
R851
10K
C851
150P
(CH)
I
C
2
R
T
3
2
1
TP786
TP788
TP789
TP787
TP785
TP783
TP780
TP779
TP793
TP792
TP791
TP790
TP761
TP775
TP774
TP771
TP770
TP769
TP768
TP767
TP765
TP764
TP763
CN701
9
8
7
6
5
4
3
2
1
TP782
TP777
C454
0.0022
R462
100K
R464
100K
R414
1K
R413
1K
TP408
R415
1K
IC402
EEPROM
S29L294A
R411
100K
R412
10K
TP411
TP409
TP407
TP410
TP413
R458
56K
R457
18K
R456
8.2K
R455
5.6K
R453
18K
R452
8.2K
R451
5.6K
TP460
CN451
9
8
7
6
5
4
3
2
1
TP453
TP452
TP451
TP461
TP454
TP455
TP456
TP457
TP458
TP459
TP462
TP463
R422
100K
R461
100K
R463
100K
D461
RB731U
6
5
4 3
2
1
D431
1SS361
C431
0.47 R431
330K
IC431
SESET
S80820LN
4
3
2
1
IC202
4MBIT D-RAM
IX2567AF
9
8
7
6
5
4
3
2
1
D861
EP10LA03
C863
1
C865
1
L862
100µH
C869
47/6.3
TP405
IC820
2.5V REGULATOR
62FP2502
C820
1
R803
100K
R465
100K
R426
22K
IC200
2.0V REGULATOR
62FP2002
C200
1
R202
33
IC702
4.5V REGULATOR
62GR4522
5
4 3
2
1
L822
10µH
R823
100K R828
220K
C825
4P(CH)
R829
33K
6
5
4
3
2
1
R827
300K
R826
10K
R821
100K
C830
1000P
R832
10M
C822
56P(CH)
D821
EC30LA02
C821
220/4
C810
0.33
R811
180K
R810
180K
TP811
TP414
C202
47/6.3
TP212
04
4
7
TP204
TP400
TP412
TP202
TP207
SW402
HOLD
TP610
C600
22/6.3
L600
2.2µH
TP417
TP416
TP406
R406
100K
R405
10K
TP205
R222
1M
XL201
33.868MHz
C211
5P(CH)
C212
5P(CH)
CK207
L209
100mA
L203
100mA
R207
680
L204
100mA
TP203
CK224
CK222
C401
0.1
XL401
4.19MHz
R425
22K
R424
22K
R423
22K
R408
100K
R407
10K
TP404
TP403
TP415
TP402
TP401
TP206
C207
0.1
C203
0.1
R204
1K
TP209
TP210
CK201
CK202
CK203
CK206
CK205
CK204
R206
270K
C205
0.1
R205
330K
IC401
SYSTEM
MICROCOMPUTER
IX0298AWZZ
1
00
1
C100
10/6.3
L100
10µH
IC201
ENCODE/
DECODE/SERVO
ATRAC
LR37811
1
00
76
10
9
8
7
6
5
4 3 2 1
TP201
TP208
C201
1
TP200
VCCVG
DSPRST
DSPSTB
DSPSCK
DSPDAT
DSPRST
VCC4.5
RPLAY
RESET
PBMUTE
BEEP
RCAULT
AUSCLK
AUDATA
PBAULT
INPGCK
INPGIN
MCPGIN
ELON
RKEY
RDATA
EMPH0
RPLAY
PCNT1
SYD0
SYD1
SYD2
SYD3
SYD4
SYD5
SYD6
SYWR
SYRD
SYRS
SYD7
DSPDAT
DSPSTB
DSPSCK
CIN
HKEY2
HREC
HSTOP
HPLAY
HKEY1
M
VCCRF VCC2.5
VCC2.7X
BATON
BATINCK
PCNT2
TEMP
PLVDCI
PLVDRY
RESET
BATINCK
BATON
RCPCNT
ELON
PCNT2
DINT
AUDATA
PBAULT
HREC
HPLAY HSTOP
VCC2.7
PCNT1
PLVDCI
PLVDRY
BCLK
LRCK
DAPON
ADPON
DIN
DFCK
ADDATA
OPTCNT
EMPH1
DADATA
DCNT1
DISCPR
SPIN
X176KO
RKEY
EFMO
INNSW
PDCNT
HDON
LDVAR
RFLAT
OPICGA
LDON
INPGCK
INPGIN
MCPGIN
EMPH0
PBMUTE
BEEP
AUSCLK
RCAULT
RCPCNT
HKEY2
HKEY1
VCCENDEC
VCCDRAM
SENSE
FOK
XRT
LDCNT1
LDCNT2
Y
RS
Y
RD
Y
WR
Y
D7
Y
D6
Y
D5
Y
D4
Y
D3
Y
D2
Y
D1
Y
D0
N
T
N
N
SE
O
K
SPDRR
SPDRF
SLDRR
SLDRF
TRDRR
TRDRF
FODRR
FODRF
R
T
_LCDRST
OPEN
DCNT1M
NIHEXT
BAT0FF
CHGCNT
PLVGIN
PLVON
SCKO
P32
CHGON
_DCEXT
I/O1
I/O2
WE
RAS
A9
A0
A1
A2
A3
VCC A5
A6
A7
A8
OE
CAS
I/O3
I/O4
GND
_ARQK
_ELON
SPWDS
PCNT1
EAIN+
DB
EAIN-
VREF
GND
EAOUT
PCNT2
JPNP
VDD
VSS
VSS
EXTAL
VCC
_STBY
_NMI
MD2
WDTOVF
MD1
MD0
BUZOUT
VSS
RCPCNT
VSS
VSS
EEPD
VSS
VDD
OUT
PCNT1
PBOPON
RCLAT
PBLAT
RADAT
RACLK
RFLAT
OPICGA
RMDAT
PLVBAT
PLVDCI
MCMON
EFMO
TCRS
RAA3
RAA2
RAA1
RAA0
RAA4
RAA5
RAA6
RAA7
RAA8
RAOEX
RACASX
RAD2
RAD3
VDD2
DGND
RAA9
RARASX
RAWEX
RAD1
RAD0
VDD1
DGND
AVCC
EFMI
DGND
VDD1
VDD1
DGND
BIN
EIN
FIN
AIN
AGND
TCG
SPDRR
SPDRF
SLDRR
SLDRF
TRDRR
TRDRF
X176KO
TEST2
FODRF
FODRR
TEST0
TEST1
WBI
VBAT
SYRDX
SYWRX
SYSD7
SYSD6
SYSD5
SYSD4
SYSD3
SYSD2
SYSD1
SYSD0
RSTX
DINTX
MCCK
COUT
SENSE
FOK
SFSY
SBSY
SBO
SBCK
TEMON
TOTMON X700KO
LDCNT2
EMPH1
OPTCNT
DAPON
ADPON
VXI
VPD
X1I
X1O
DIN
DOUT
VDD3
DGND
LRCK
BCLK
DFCK ADDATA
DADATA
FEMON
SYRS
PLCK
ACRCER
RAA10
LDCNT1
EFMMON
CKSTP
PDCNT
INPGCK
_INPGI
_MCPGI
TEST1
TEST0
_KHOLD
_STOP
_REC
_PLAY
_RPLAY
DSPSCK
DSPDAT
DSPSTB
HDON
DISCPR
_EJSW
_ARQD
PRTCT
GND
DO
DI
SK
CS VCC
NC
RKEY
AVCC
_FOK
SENSE
_DINT
CIN
SPIN
_RESET
VCC
XTAL
EMPH0
INNSW
VSS
LDON
SYRS
_SYRD
_SYWR
SYD7
SYD6
SYD5
SYD4
SYD3
SYD2
SYD1
SYD0
_XRST
EEPK
_EPCS
AVSS
Vref
LDVAR
TEMP
HKEY2
HKEY1
ELON
RDATA
RPLAY
RKEY
PBMUTE
AUDATA
PBAULT
BEEP
RCAULT
AUSCLK
RESET
MCPGIN
INPGCK
INPGIN
EMPH0
AUDIO
PWB-A2
GND
P-M
O
ENT
E
DISP
VOL
VOL
BAS
S
EDIT
REC
SKIP
SKIP
STO
P
PLA
Y
+B
1
11
9
+B
+B
12
23
1
23
1
1
2
3
4
5
6
7
8
+B
+B
+B
+B
+B
+B
+B
+B
+B
33 33
11
FLAT CABLE
(243)
1
+B
+B
9
8
7
6
5
4
3
2
1
IC80
2
OVE
R
CON
N
CIR
C
IC402
IC702
IC808 I
C
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
99
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52 53
54
55 56 57 58
59 60
61 62 63 64
65
66 67 68 69
70
71 72 73 74 75
2
3
4
5
6
7
8
9
10
11
12 13
14
15 16 17
18 19
20
21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51 52 53 54 55 56 5758 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
10 11
A4
12
13
14
15
16
17
18
19
20
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
11
12
13
14
9
8
7
6
5
4
3
2
1
11
12
13
14
MD-MT15/15C/15H/15W/161E/18H
– 16 –
• The numbers 1 to 18 are waveform numbers shown in page 22.
A
B
C
D
E
F
G
H
123456
Figure 16 SCHEMATIC DIAGRAM (3/3)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 11.
P14 P16
P15
TP064B
TP070B
TP086B
TP087B
TP088B
TP721B
L451
150mA
C776
1000P
L500
47µH
C452
1000P
L456
100mA
L452
100mA
TP729
L453
100mA
TP500
C504
3.3/10
C503
3.3/10
C511
1
C500
10/6.3
C508
1
C762
2.2
C761
2.2
R500
4.7
C507
10/6.3
C505
1000P
C506
1000P
IC501
AD/DA
CONVERTER
AK4519VF
9 8 7 6 5 4 3 2 1
R501
470 C509
2.2
R502
470
C510
2.2
C501
0.0022/50
C502
0.0022/50
C773
0.22
C774
1
IC771
2.5V REGULATOR
62 GR2522
5
4 3
2
1
R710
56
SW401
EJECT
4
3
2 1
SW403
DISC LID
OPEN
4
3
2 1
L771
100µH
C771
47/6.3
TP082
TP089
TP087
TP085
TP084
TP083
TP080
TP079
TP078
TP086
TP093
TP092
TP091
TP090
TP073
TP063
TP064
TP065
TP066
TP067
TP068
TP069
TP070
TP062
TP061
TP077
TP076
TP075
TP074
TP072
TP071
CN702
9
8
7
6
5
4
3
2
1
TP088
C723
1000P
R767
1K
TP721
C712
100P
(CH) TP703
Q711
RN1444 A
TP714
C731
0.22
C711
100P
(CH)
R727
8.2K
TP722
R726
39K
R728
1K
J703
HEADPHONES
8
7
6
5
4
3
2
1
C726
3.3/10
C725
3.3/10
R723
6.8K R724
6.8K
L751
22uH
C765
0.22
TP723
R769
15K R770
15K
R717
1K
R768
1K
TP705
C701
10/6.3
L752
22uH
IC701
AUDIO
AMP.
IR3R54N
9 8 7 6 5 4 3 2 1
R763
68
C752
0.082
R713
10K
TP708
C735
1000P
C713
1
C703
0.01
C757
0.68
R725
100
R764
68
TP728
C758
3.3/10
C755
0.01
C753
1
R715
100K
TP724
Q721
2SC4213 B
TP726
C766
0.22
TP709
TP725
R716
100K
TP701
C715
0.1
C760
0.027
TP702
TP707
C722
3.3/10
R754
270K
R757
27K
R720
8.2K
R719
8.2K
R712
5.6K R711
5.6K
C754
1
R729
2.7K
R730
2.7K
L714
100mA
C759
0.027
TP704
J701
OPTICAL/
LINE IN
9
8
7
6
5
4
3
2
1
TP727
C714
1
L454
100mA
C756
0.68
C720
1000P
R701
100
R762
4.3K
R761
4.3K
R703
120K
J702
MICIN
4
3
2
1
L704
100mA
L703
100mA
D492
15AZ7.5Y
R765
D494
15AZ7.5Y
L712
100mA
R492
1K
L702
100mA
C751
0.082
R766
R714
10K
C491
0.1
R753
120K
C721
3.3/10
C702
10/6.3
R756
27K
TP711
TP713
C724
1000P
TP712
L711
100mA
L713
100mA
R702
100
C734
0.1 C733
0.1
L719
0.47uH
C719
10/10
IC703
AUDIO AMP.
IR3R54N
9 8 7 6 5 4 3 2 1
R467
18K
Q461
2SC4738 GR
R806
1K
R279
100
R277
39K
C827
22/6.3
F871
T0.5A L 63V
R460
68K
C876
1
R833
47
C834
0.1
D831
1SS372
C831
0.1
C832
0.1
D803 1SS382
REVERSE
CONNECTION
4
3 2
1
R802
1K
TP483
TP489
TP488
TP486
TP487
TP482
TP481
C481
1
C482
1
CN482 9
8
7
6
5
4
3
2
1
IC808 CHARGING CIRCUIT
HN1C01FU
6
5
4
3
2
1
R278
2.2K
R853
100
C258
0.0047
R254
2.2K
Q874
RN1113
C877
1
C866
1
R852
47K
R851
10K
C851
150P
(CH) C852
1
IC851
2.35V
REGULATOR
TC7S14FU
5
4
3
2
1
Q255
RN1113
IC807
RN4904
6
5
4 3
2
1
R276
3.3K
R265
22K
R275
56K
Q251
RN1113
R263
100K
R274
75K
C256
0.1
R267
75K
R264
18K
R266
100K
R256
18K
R258
180K
R260
3.3M
R273
56K
Q254
RN1113
C250
0.1
R253
75K R252
150K
C871
0.47
TP786
TP788
TP789
TP787
TP785
TP783
TP780
TP779
TP793
TP792
TP791
TP790
TP761
TP775
TP774
TP771
TP770
TP769
TP768
TP767
TP765
TP764
TP763
CN701
9
8
7
6
5
4
3
2
1
TP782
TP777
R871
10K
IC872
S80813LN
4
3 2
1
IC871
S8324A28
5
4 3
2
1
L871
47µH
D812
SB10015C
IC803
FDT439N
CHARGING
CIRCUIT
TP809
R257
100K
R458
56K
R457
18K
R456
8.2K
R455
5.6K
R453
18K
R452
8.2K
R451
5.6K
TP460
CN451
9
8
7
6
5
4
3
2
1
TP453
TP452
TP451
TP461
TP454
TP455
TP456
TP457
TP458
TP459
TP462
TP463
J801
DC IN
3
2
1
TP802
TP801
L887
TIP IMPEDER
L888
TIP IMPEDER
R815
56K
IC802
FDC634P
6 5 4
3 2 1
R816
24K
C801
0.1
TP800
R808
5.6K
IC801
HN1C01FU
6
5
4 3
2
1 D800
1SS360
R807
680
D802
015Z5.1Y
R800
22K
R801
2.2K
C800
1
R809
2.2K
TP805
D801
SB10015C
C805
100/6.3
C806
3.3
TP803
TP804
R804
1.0A
Q253
RN1113
TP808
D861
EP10LA03
C863
1
C865
1
L862
100µH
C869
47/6.3
R250
1
R251
1
IC806
NDC631N
6
5
4 3
2
1
R259
82K Q252
2SC4738GR
R268
2.2K
C255
0.1
C254
0.1
R255
0.2M
R262
24K
R261
270K
C253
0.1
IC805
NJM022V
8 7 6 5
4 3 2 1
R271
1K
R269
100
R270
100
R465
100K
D871
EP10LA03
C875
0.1
C874
15/10
C841
10/6.3
IC841
2.35V REGULATOR
XC62HS02
5
4 3
2
1
IC702
4.5V REGULATOR
62GR4522
5
4 3
2
1
L822
10µH
C826
1
R878
100K
Q873
NDS332P
D822
1SS389
R831
100K
C829
0.01
C823
390P
L821
4.7µH
R823
100K R828
220K
R824
15K
C825
4P(CH)
R829
33K
C828
1
IC821
DC/DC
CONVERTER
IR3M09N
9
8
7
6
5
4
3
2
1
R827
300K
R826
10K
R821
100K
C830
1000P
R832
10M
C822
56P(CH)
C824
560P
D821
EC30LA02
C821
220/4
C810
0.33
R811
180K
R810
180K
IC822
CPH3403
TP811
VCC11
VCCVG
DSPRST
DSPSTB
DSPSCK
DSPDAT
VCCPOWER
VCC4.5
RPLAY
RESET
PBMUTE
BEEP
RCAULT
AUSCLK
AUDATA
PBAULT
INPGCK
INPGIN
MCPGIN
ELON
RKEY
EMPH0
VCC12
VCC3
Y
2
E
C
T
OP
A
Y
Y
1
VCC2
VCC1
VCC4
GND1
VCC2.7X
VCC13
VCC2.7
MICOM2.35V
PCNT1
PLVDCI
PLVDRY
DC JACK
VCC
GND
OUT
VDD
VSS
O
-
+ +
-
O
V-
V+
G
D D
D
S
S
PCNT1
OSCOUT
OSCIN
EAIN+
DB
EAIN-
VREF
OSC
ROSC
STATE
PWM
VCC
OUT
GND
EAOUT
RDATA
EMPH0
RESET
ELON
RDATA
RPLAY
RKEY
PBMUTE
AUDATA
PBAULT
BEEP
RCAULT
AUSCLK
RESET
MCPGIN
INPGCK
INPGIN
EMPH0
RKEY
RPLAY
MCPGIN
INPGIN
INPGCK
PBMUTE
RCAULT
BEEP
PBAULT
AUDATA
AUSCLK
AUDIO
PWB-A2
VB
VCML
VCMR
VRAD
VRDA
AINR
AINL
VA
AGND
LRCK
SCLK
SDTI
SDTO
MCLK
DEM0
DEM1
VD
DGND
PWDA
PWAD
CMODE
AOUTL
AOUTR
VCOM
Vout
GND
VCC
GND
R
L
PLAY
KEY
R-ch
L-ch
R-ch
L-ch
R-ch
L-ch
VEE
VCC
DGND
ROUT
LOUT
RIHP
LIHP
AGND
RI LI
VEE
LI
RI
AGND
LIHP
RIHP
DGND VCC
LOUT
ROUT
LCD ASS'Y
LCD
DRIVER
LCD
GND
P-MODE
ENTER
DISPLY
VOL DOWN
VOL UP
BASS
EDIT
REC
SKIP DOWN
SKIP UP
STOP
PLAY
+B
+B
+B
+B
+B
33 33
11
FLAT CABLE
(243)
BATTERY
TERMINAL
SW801
Ni-MH
BATTERY
DETECTION
D
G
S
32
1
+B
678
15
32
1
2
1
3
IC805,IC806,IC807
CHARGING CIRCUIT
23
1
!
32
1
G
D
S
+B
S
G
D
9
8
7
6
5
4
3
2
1
KEY SWITCH
FLEXIBLE
PWB ASS'Y
1
2
3
RIPPLE
FILTER
IC801
2.8V UP CONVERTER
FET IC
SW801
IC802: IC802
OVER VOLTAGE REVERSE
CONNECTION PROTECTION
CIRCUIT
2.8V UP CONVERTER
IC501
IC702
IC808 IC821
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
10
11
12
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
11
12
13
14
9
8
7
6
5
4
3
2
1
11
12
13
14
10
11 12
13 14 15 16 17 18 19 20 21 22 23 24
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
R765:R766
MD-MT15H/
15W/161E/18H
18
MD-MT15/15C
8.2
MD-MT15/15C/15H/15W/161E/18H
– 17 –
A
B
C
D
E
F
G
H
123456
Figure 17 WIRING OF P.W.BOARD (1/5)
OPTICAL PICKUP
UNIT(13)
MAGNETIC HEAD FLEXIBLE PWB(18)
MAGNETIC
HEAD(24)
MECHANISM
FLEXIBLE PWB
M902
SLED MOTOR M903
HEAD
UP/DOWN MOTOR
PH901
PHOTO
INTERRUPTER
M901
SPINDLE MOTOR
SW902
DISC
PROTECT
TO MAIN PWB
P18 5-H
CN601
TO MAIN PWB
P18 3-C
CN482
LCD Ass'y (214)
KEY SWITCH FLEXIBLE PWB Ass'y (213)
TO MAIN PWB
P18 2-C
CN451
CN101
TO MAIN PWB
P18 4-H
MD-MT15/15C/15H/15W/161E/18H
– 18 –
• The numbers 1 to 18 are waveform numbers shown in page 22.
: Through-hole where the top, bottom and +B patterns are connected.
: Through-hole where the top, bottom and hround patterns are connected.
: Through-hole where the top and bottom patterns are connected.
A
B
C
D
E
F
G
H
123456
Figure 18 WIRING OF P.W.BOARD (2/5)
TP106
TP205
TP110
TP105
C110
C109
C106
C111
TP100
TP102
TP101
CK112
C112
TP139
TP108
C107
TP114
TP200
IC202
TP404
TP109
R106
TP144
TP115
CK105
IC101
TP203
TP402
CN101
TP111
TP103
TP145
TP791
TP132
TP406
TP415
TP118
CK107
TP116
R406
TP418
TP809
TP117
TP131
TP206
CK108
TP405
TP808
TP787
TP414
TP133
CK106
R405
CK102
CK103
TP207
CK101
C401
TP130
CK104
TP411
TP122
TP151
Q101
TP121
C130
TP119
TP120
R154
IC402
TP351
C161
TP408
IC401
TP201
TP409
R908
R906
C903
R907
TP407
R905
C908
C902
R909
R413 C910
IC351
R903
TP901
R415 R411 C909
TP413
IC901
R414
R412
C906
TP659
TP658
TP452
TP187
TP662
C357
TP601
C810
R902
C907
R810
R811
TP651
TP663
TP410
TP416
TP417
C911
TP652
TP785
R901
R904
TP655
L921
TP602
TP654
TP811
C825
R827
R832
R921
TP653
R452
TP401
TP610
R422 R922
R853
TP656
TP489
R828
C822
R823
R826
C830
R829
R821
L601
C601
R851
C851
R852
D831
TP488
TP657
CN601
TP661
TP486
IC851
C832
C831
L602
C852
C828
TP660
IC821
C602
TP463
TP664
TP665
TP666
L603
C603
C482
C481
C824
C604
IC808
C829 R279
TP481
TP482
D822
L604
IC807
R831R824
R265
R273
Q254
Q251 R263
C823 R277
C250
R264
R253
R252
R278
R276
R259
R260
Q253
R261
TP804
C253
Q255
R275
R266
R262
R254
R271
R274
R267
R255
C258
C256
IC805
C254
C255
R269
TP803
R804
TP483
TP454
R456
TP453
R457
TP451
R455
TP456
TP458
CN482
CN451
R424
TP460
R426
TP461
R425 R453
TP457
TP805
R451
L888
TP487
R815
R816
C800
TP462
TP801
TP800
C801
TP802
L887
TP209
TP210
TP455
TP208
TP403
TP400
TP761
TP763
TP764
TP459
TP765
TP204
XL401
TP767
TP202
TP768
TP779
TP774
TP769
TP775
TP786
TP770
CN701
TP788
TP782
TP771
TP777
TP780
TP790
TP412
TP792
TP783
TP793
TP789
TP212
R458
64
3
1
46
31
16
15
10
5
1
14
8
1
5
7
10
14
58
C905
1
5
10 11
15
20
7
12 10
156
1
5
10
13
1
5
9
33
30
25
20
15
10
5
1
12345 678910
20 19 18 17 16 15 14 13 12 11
SW402
HOLD
37
36 35
30
25 24 20 15 12
13
10
5
1
48
4540
22
1
5
10
15
20
1
2
3
To Key Switch Flexible Ass'y
P17 2-E To LCD Ass'y
P17 5-E Terminal, Battery
(237) /
13 1 91
54
13
122 116
Terminal, Battery
(233)
Terminal, Battery
(235)
1
1
TO AUDIO PWB
CN702
P20 3-A
MAIN PWB-A1 (BOTTOM VIEW)
FLAT CABLE
(243)
33
33
2
1
9
13
11
17
18
10
16
14 15
26 25
30
20
15
10
5
1
100
50
51
55
45 40 35
60
65
70
75 80 85 90 95
76
J801
8
5
1
4
J801
DC IN
To Optical Pickup Unit
P17 1-D To Mechanism Flexible PWB
P17 6-D
MD-MT15/15C/15H/15W/161E/18H
– 19 –
78 9 10 11 12
Figure 19 WIRING OF P.W.BOARD (3/5)
R270
R258
R257
Q252
R256 SW801
R250
IC806
R251
D812
IC803
R268 L821 L822
C821
R600
C805
C622
C600
C651
L600
C605
C609 L609
C610
C826 C863
C834 R833
L862
C865
C869
C806
IC601
IC822
C608 L610
D821
C827 D861
L608
C431
C204
IC431
D431
R204
C203
Q873 R431
Q874
IC651
CK202
CK201
CK206
CK205
CK203
CK204
R601 R878
Q901
C361
L171
R466
C207
C124
C122
R920 R104
R361
R102
IC353
C123
C121
C351 R103
IC354
D351 R101
IC201
R205
C171
R206
C354
R351
C205
C353
R161
C165
CK224
CK222
IC820
R105 C104
C201
R803
R407
R408
R404
R403
C103
C102
C820
IC200
C100
L100
R202
C202
C200
R806
R423
L206
L205
R462
R800
R802
XL201
D803
C211 C212
R222 L202
R808
L203
L209
L201
IC801
CK207
L204
R207
C209
R463
R801
R807
D461
R465
D802
C454
R464
R461
R809
D800
R871
C871
IC872
D801
IC802
Q461
IC702 C877
C866
R467
R460
C875
IC871
C841
C874
IC841
D871
F871
T0.5A L 63V C876
L871
1
2
3
6
4
5
G
D
S
1
5
10
15
18 19 20
25
30
35
36
85
1412312
544
53
2
1
3
1
56
10
G
SD
3
3
3
3
2
2
2
2
1
1
1
3
3
3
2
2
2
1
1
1
1
4
45
5
4
4
4
4
4
5
5
5
6
6
1
2
3
4
S
G
D
31
2
1
5
10
15
20
2526 30 35 40 45 50
51
55
60
65
70
75
76808590
95
100
3
2
1
4
5
6
MAIN PWB-A1 (TOP VIEW)
SW801
Ni-MH
BATTERY
DETECTION
12
34
MD-MT15/15C/15H/15W/161E/18H
– 20 –
Figure 20 WIRING OF P.W.BOARD (4/5)
A
B
C
D
E
F
G
H
123456
• The numbers 1 to 18 are waveform numbers shown in page 22.
: Through-hole where the top, bottom and +B patterns are connected.
: Through-hole where the top, bottom and hround patterns are connected.
: Through-hole where the top and bottom patterns are connected.
IC771
R764
C503 C504 L500
C500 C774 C766
C502
R502
L771 C771
C510
C723
C511
R763
R762
R770
R769
R761
C773
C501
R501
C765
C762
C508
SW401
EJECT
C509
IC501
R765
R767
R500 R768
L719
C757
C756
IC703
R766
C507
R726
C726
R757
R756
C506 C505
Q721
C719
C758
R710
Q711
C725 R725
R720 R712
C760
C759
C715
R717
R719 R711
R754
C753 C754
R730
R753
C755
R723
C711
SW403
DISC LID
OPEN
C722
L702 C752
C721
C491
L454
L453
C712
R729
C751
R724 C720
C724 L712 L713
L703
C731
D494
R703
R727
L456
C703
R728 R492
C701
C702
R702
L704
R714
R716
L714 C714
D492
CN702
L751
L752
C761
1
5
10 15
20
24
13
12
4
5
3
2
19
8
7
13
1520
24
1510 12
32
1
4
32
1
4
33
33
33
6J701
OPTICAL/
LINE IN
TO MAIN PWB
CN701
P18 2-B
7
86
5
AUDIO PWB-A2 (TOP VIEW)
FLAT
CABLE
(243)
21
345
1
1
1
510
1520
2530
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