Sharp MDMT-16-E, MDMT-20-H Service manual

Illustration: MD-MT20H

MD-MT20H/16E

SERVICE MANUAL

No. S5933MDMT20H/

MD-MT20H(BL) MD-MT20H(GL) MD-MT20H(S) MD-MT16E(S)

• In the interests of user-safety the set should be restored to its original condition and only parts identical to those specified be used.

DIFFERENCE BETWEEN

MD-MT16E AND MD-MT20H

MD-MT20H

Illustration: MD-MT16E

SECTION

Optical Digital cable None Used Remote Control None Used Rechargeable Battery None Used Battery Carrying Case None Used AC Adapter None Used AC Adapter Pad None Used

MD-MD16E

CONTENTS

SAFETY PRECAUTION FOR SERVICE MANUAL ............................................................................................................... 2

SPECIFICATIONS ................................................................................................................................................................. 3

NAMES OF PARTS ............................................................................................................................................................... 4

OPERATION MANUAL (FOR MD-MT20H) ........................................................................................................................... 5

DISASSEMBLY...................................................................................................................................................................... 8

REMOVING AND REINSTALLING THE MAIN PARTS......................................................................................................... 9

ADJUSTMENT ...................................................................................................................................................................... 10

NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 23

TYPES OF TRANSISTOR AND DIODE .............................................................................................................................. 23

VOLTAGE ............................................................................................................................................................................ 24

BLOCK DIAGRAM ............................................................................................................................................................... 25

SCHEMATIC DIAGRAM ...................................................................................................................................................... 26

WIRING SIDE OF P.W.BOARD........................................................................................................................................... 29

WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 34

TROUBLE SHOOTING ........................................................................................................................................................ 35

FUNCTION TABLE OF IC.................................................................................................................................................... 38

CIRCUIT DESCRIPTION ..................................................................................................................................................... 40

PARTS GUIDE/EXPLODED VIEW PACKING METHOD (MD-MT20H/MT16E FOR U.K. ONLY)

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-MT20H/16E

SAFETY PRECAUTION FOR SERVICE MANUAL

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.

Laser Diode Properties

● Material: GaAlAs

● Wavelength: 785 nm

● Pulse time:

Read mode: 0.8 mW Continuous Write mode: max 10 mW 0.5S

min cycle 1.5S Repetition

LASER KLASSE 1 LUOKAN 1 LASERLAITE KLASS 1 LASERAPPARAT

(For Europe)

VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1 YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.

VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I DENNA BRUKSANVISNING SPECIFICERAS. KAN ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASERSTRÅLNING, SOM ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.

(For U.K.)

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.

Precaution to be taken when replacing and servicing the laser pickup. The following precautions must be observed during servicing to protect your eyesagainst 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 docus access (2-3 seconds). (Fig. 2-1) During the operation, the laser will lesk from the opening btween the magnetic head and the mechanical chassis (Fig. 2-2). In order to protect your eyes, you most not look at the laser durnd repaor. Before repaoring be sure to disconnect the AC adaptor and remove the batteries.

Magnet head

Mechanism Chassis

Optical pick-up

Top Cabinet

Spindle motor

Figure 2-1 Figure 2-2

– 2 –

Magnet Head

Main PWB

Lasar Beam

Optical Pick-Up

■ General

Unmeasurable (less than ±0.001% W. peak)

● 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 values when the unit is charged and used at an

ambient temperature of 20°C (68°F).

● The operating time when using an alkaline batteries 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

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: (MD-MT20H) 235 g (0.52 lbs.) with rechargeable battery

Input socket: Line/optical digital, microphone (powered by the main unit) Output socket: Earphones (impedance: 32 ohms)/remote control unit

■ MiniDisc Recorder

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 T ransform Acoustic Coding), 24-bit computed

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:

Weight: (MD-MT16E) 180 g (0.40 lbs.) without battery

Power source: (MD-MT20H for U.K.)

Power source: (MD-MT20H for Europe)

Power consumption: Output power:

Charging time:

MD-MT20H/16E

FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL.

SPECIFICATIONS

DC 2.4V: Rechargeable Nickel-Metal Hydride battery x 1 DC 5V: AC adaptor (AC 230 - 240V, 50/60 Hz) DC 3.0V: Commercially available, “AA” size, alkaline bat-

DC 4.5V: Separately available car adaptor, AD-CA20X

DC 2.4V: Rechargeable Nickel-Metal Hydride battery x 1 DC 5V: AC adaptor (AC 220 - 230V, 50/60 Hz) DC 3.0V: Commercially available, “AA” size, alkaline bat-

DC 4.5V: Separately available car adaptor, AD-CA20X

7 W (AC adaptor) RMS; 20 mW (10 mW + 10 mW)

(0.2% T .H.D.) Approx. 4 hours (90 %)

Approx. 6 hours (fully charged) (When using the AC adaptor included with the unit)

tery x 2 (

for cars with a 12-24V DC negative earth electrical

system)

tery x 2 (

for cars with a 12-24V DC negative earth electrical

system)

Battery life:

Power source: (MD-MT16E)

Power consumption: (MD-MT16E) Output power: (MD-MT16E)

Charging time: (MD-MT16E)

Battery life: (MD-MT16E)

When using the rechargeable battery (fully charged) included with the unit

Continuous recording:

Approx. 7.5 hours

Continuous play: Approx. 12 hours

DC 2.4V: Optional Rechargeable Nickel-Metal Hydride batDC 3.0V: Commercially available, “AA” size, alkaline batDC 4.5V: Optional car adaptor, AD-CA20X

DC 5V: Optional AC adaptor (AD-T20APE, AC 230 - 240V,

7 W (Optional AC adaptor) RMS; 20 mW (10 mW + 10 mW)

(0.2% T.H.D.) Approx. 4 hours (90 %)

Approx. 6 hours (fully charged) (When using the AC adaptor)

tery (AD-T20BT) x 1 tery x 2

for cars with a 12-24V DC negative earth electrical

( system)

50/60 Hz)

When using two, commercially available, high capacity, “AA” size, alkaline batteries

Continuous recording:

Approx. 7.5 hours

Continuous play:

Approx. 15 hours

When using two, commercially available, high capacity, “AA” size, alkaline batteries

Continuous recording:

Approx. 7.5hours Continuous play:

Approx. 15 hours

When using the optional rechargeable battery AD-T20BT (fully charged)

Continuous recording:

Approx. 7.5 hours

Continuous play: Approx. 12 hours

Specifications for this model are subject to change without prior notice

– 3 –

MD-MT20H/16E

■ Main unit

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

NAMES OF PARTS

Illustration: MD-MT20H

11 12

13 14

123456

15 16

17

19

18 20 21

7 8

9 10

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. V olume 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. Remote Control/Earphones Socket

31. Optical/Line Input Socket

32. Microphone Input Socket

33. Hold Switch

34. 5V DC Input Socket

35. Battery Cover

29

22 23

28

27262524

30 31 32

33

34 35

■ Remote control unit (MD-MT20H Only)

1. Earphones Socket

2. Fast Reverse/Recording Level Down/ Name Select Button

3. Hold Switch

4. Play/Pause Button

5. Fast Forward/Recording Level Up/ Name Select Button

6. Stop/Power Off Button

7. Volume Up/Cursor Button

8. Bass/Delete/Track Mark Button

9. Volume Down/Cursor Button

– 4 –

1

2

3

4 5

6 7

8 9

OPERATION MANUAL (FOR MD-MT20H)

POWER SOURCE

■ Rechargeable battery power

This unit can be used with the following power sources: a rechargeable battery, an AC adaptor,

commercially available alkaline batteries, and a separately available car adaptor (AD-CA20X).

When the rechargeable battery is used for the

first time or when you want to use it after a

long period of disuse, be sure to charge it fully.

1

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 the rechargeable battery accord-

ing to the polarity marked on the bottom

of the unit.

3

Close the battery cover.

4

Plug the AC adaptor into the AC socket,

and then insert the plug on the AC adap-

tor lead into the DC IN 5V socket.

5

Press the CHARGE button of the main

unit to begin charging.

● “

” will appear, and the battery

will begin charging.

●After about 4 hours have passed,

“

” will go out.

This indicates that the battery charg-

ing is about 90% complete.

●

To charge the battery fully, continue

charging for about 2 more hours.

(In this case, you do not need to press

the CHARGE button. Even if the

CHARGE button is pressed, “

”

will not appear.)

Notes:

● After charging has been completed, the

AC adaptor may be left connected.

(For example, when charging at night)

● The battery will not be charged when the

power to the main unit is turned on.

●

Do not force open the battery cover too wide.

● Do not use a rechargeable battery or an

AC adaptor other than those specified

on page 3 (ACCESSORIES).

● The charging time will vary, depending

on the condition of the battery.

● When the battery is charged for the first

time or is charged after not being used

for a long period, the operating time may

be shorter than normal. The battery life

will recover with normal use i.e. charg-

ing and discharging.

● T o avoid shortening the service life of the

battery only recharge the battery after

in has been completely discharged.

1

2

4

3

5

AC 230-240V,

50/60 Hz

Insert securely,

all the way in.

To the DC IN 5V socket

RECORDING USING THE OPTICAL DIGITAL CABLE

This is the method used for recording digi-

tal signals from CDs or MDs exactly as they

are stored on the original. Compared to re-

cordings made from analogue inputs, digi-

tal recordings 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 Digital radios or DAT

tape recorders that use a different sam-

pling frequency (32 kHz or 48 kHz), re-

cordings 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

Analogue recording is

possible.

Recording

Playback

Digital cable

Recording

MD player

MD-MT20H/16E

– 5 –

MD-MT20H/16E

If the hold function is active whilst 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

■ Checking the remaining amount

of battery level

The remaining amount of battery level is

shown by the battery indicator (

) dur-

ing operation.

< How to read the battery indicator >

● When the battery is completely discharged,

the battery indicator will flash. Recharge the

battery or replace the alkaline batteries with

a new one.

● 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 batteries

or a rechargeable battery, the battery indi-

cator will not correctly display the remain-

ing capacity for approximately 10 seconds

after the power has been turned on.

● When the AC adaptor included with this unit

or a separately available car adaptor is

used, the battery indicator will not be shown.

● The number of bars shown in the battery

indicator may increase or decrease, de-

pending on the operation being performed.

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

Remote

control unit

Main

unit

Can be operated

from either the

remote control unit or

the main unit.

Can only be operated

from the remote

control unit.

Can only be operated

from the main unit.

Cannot be operated

from either the

remote control unit or

the main unit.

Cancel

Hold

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.

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

authorised SHARP dealer or service centre.

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 remote control unit or the earphones 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 remote control unit plug or the earphone plug in-

serted firmly?

● 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

occur whilst recording or editing?

● Is the unit in the hold mode?

● Is an optical signal being output from the external

equipment?

Read the operation manual for the external equipment.

No sound is heard from

the earphones.

When the operation

buttons are pressed, the

unit does not respond.

Some sounds are

skipped.

The MiniDisc cannot be

ejected.

Recording and editing

are impossible.

■ 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

socket.

2. Remove the battery.

3. Leave the unit completely unpowered for

approximately 30 seconds.

4. Plug the AC adaptor back into the AC

socket 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

socket immediately and contact an

authorised SHARP service centre.

– 6 –

MD-MT20H/16E

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 whilst 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.

● The battery 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 analogue 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.

● T o 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

– 7 –

MD-MT20H/16E

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.

STEP

REMOVAL

1 Bottom Cabinet 1. Screw ..................... (A1) x7 8-1

2 Top Cabinet 1. Open the Top cabinet. 8-1

3 Key Switch/LCD 1. Flexible PWB......... (C1) x2 8-2

4 Mechanism Unit 1. Flexible PWB......... (D1) x2 8-2

5 Main PWB 1. Flat cable................ (E1) x1 8-2

6 Audio PWB

PROCEDURE

2. Screw ..................... (B1) x4

3. Screw ..................... (B2) x1

2. Raise the rear part, and remove 8-3 in the arrow direction.

2. Screw ..................... (E2) x2

1.

Screw ...................... (F1) x3 8-4

FIGURE

(A1)x2

ø1.4x2mm

Open Lever

ø1.4x2mm

(E2)x2

ø1.7x2.5mm

Main

PWB

(B1)x2

ø1.4x2mm

OpenOpen

(B2)x1

pull

LCD

Key Switch

Top Cabinet

(A1)x2

ø1.4x2mm

Bottom

Cabinet

Figu re 8-1

Put the fold on the connector, and apply with the felt. Sagging may result in contact with the sheet metal.

(D1)x1

pull

(A1)x1

ø1.4x2mm

(B1)x2

ø1.4x2mm

(A1)x2

ø1.4x2mm

Felt

(D1)x1* Flexible PWB for optical pickup

Audio

PWB

(F1)x3

ø1.7x2.5mm

(C2)x2

Mechanism

(E1)x1

Unit

LCD

Key Switch

Caution:

Carefully handle the main PWB and flexible PWB. After removing the flexible PWB (1*) for the optical pickup from the connector, do not touch directly the front end of flexible PWB with your hand so as to prevent damage of optical pickup by static electricity.

Figure 8-2

Mechanism Unit

Audio PWB

Figure 8-4

Figure 8-3

– 8 –

REMOVING AND REINSTALLING THE MAIN PARTS

(C1)x1

Stop Washer

MD Mechanism

Sled Motor

(C3)x2 ø1.4x1.2mm

(C2)x1

Drive Gear

(C4)x2 Mechanism Flexible PWB Solder Joint

Remove the mechanism according to the disassembling methods 1 to 4. (See Page 8.)

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 head up/down motor (See Fig. 9-2.)

1. Remove the solder joints (B1) x 2 of head up/down motor

lead wire.

2. Remove the screw (B2) x 1 pc., and remove the flexible PWB.

3. Remove the screw (B3) x 1 pc., and remove the head up/ down motor.

Note:

Take care so that the motor gear is not damaged. (If the gear is damaged, noise is caused.)

(A2)x3 ø1.4x2.8mm

Spindle Motor

Remove the solder joint (B1)x2

Head Up/Down Motor

MD-MT20H/16E

(A1)x1 Mechanism Flexible PWB Solder joint

MD Mechanism

Figure 9-1

(B3)x1 ø1.4x5.5mm

(B2)x1 ø1.4x1.5mm

How to remove the sled motor (See Fig. 9-3.)

1. Remove the stop washer (C1) x 1 pc., and remove the drive

gear (C2) x 1 pc.

2. Remove the screws (C3) x 2 pcs., and remove the sled

motor.

3. Remove the solder joints (C4) x 2 of flexible PWB.

Note:

Take care so that the motor gear is not damaged. (If the gear is damaged, noise is caused.)

How to remove the magnetic head (See Fig. 9-4.)

1. Remove the screws (D1) x4 which connects the magnetic

head to the head relay flexible PWB, remove the spring washers (D2) x 2 and remove the soldering joints (D3) x 2.

Note:

Mount carefully so as not to damage the magnetic head. (If the gear is damaged, noise is caused.)

How to reinstall the optical pickup unit (See Fig. 9-5.)

1. Remove the screw (E1) x 1 pc.

2. Slowly raise the optical pickup.

Figure 9-2

Figure 9-3

(D1)x2 ø1.4x2.2mm

MD Mechanism

(D2)x2 Spring Washer

Optical Pickup Unit

Guide Shaft

(E1)x1 ø1.7x3mm

Thrust Plate Spring

Figure 9-5

MD Mechanism

– 9 –

Magnetic Head

(D1)x1 ø1.4x1.5mm

Figure 9-4

(D3)x2 Solder joint

(D1)x1 ø1.2x1.6mm

MD Mechanism

MD-MT20H/16E

ADJUSTMENT

Test disc

MD adjustment needs two types of disc, namely recording disc (low reflection disc) and playback-only disc (high reflection disc).

Type

Test disc

Parts No.

1 High reflection disc MMD-110 (TEAC Test MD) 88GMMD-110 2 Low reflection disc MMD-212 (TEAC Test MD) 74-minute disc 88GMMD-212 3 Low reflection disc MMD-213A (TEAC Test MD) 80-minute disc 88GMMD-213A 4 Low reflection disc Recording minidisc UDSKM0001AFZZ

Note: Use the low reflection disc on which music has been recorded.

Entering the TEST mode

1. Setting at port (power nonconnected state)

(1) Set the port as follows. TEST1 : "Low" (TP416) TEST0 : "High" (2) Turn the Power ON. (3) Test Mode STOP [ T E S T _ ]

2. Setting by special button operation (in standby state)

(1) Holding down the DISP button and ENTER button, press the PLAY button. (2) Normal mode setting initialization (BASS setting, VOL setting, etc.) *Since the unit is changed to the setting for production line inspection , be sure to set it to the default setting state in the following default setting procedure before returning it to the user. (3) Indication of microcomputer version for one second [ 3 1 8 A f X ]

Destination

Microcomputer version

(4) Whole LCD lighting for 2 seconds (5) Test Mode STOP [ T E S T _ ] *When the PLAY button is pressed during indication (3) and (4), the process proceeds to (5).

EEPROM version

Leaving the TEST mode

(1) Press the STOP button in the TEST mode stop state or version indicating state or whole LCD lighting state.

Shipping setting method

Holding down simultaneously the VOLUME-DOWN Button and PLAY Button of the set unit without disc, supply the power from the DC IN plug. After the indication "INIT" -> "BYE OK" disappears, release the power supply of DC IN.

Test Mode

1. AUTO 1 Mode • Perform preliminary automatic adjustment.

2. AUTO 2 Mode

3. TEST-PLAY Mode

4. TEST-REC Mode

5. MANUAL 1 Mode

6. MANUAL 2 Mode

• If the combination of mechanism and pickup PWB has been changed, be sure to start from

AUTO1.

• Perform ATT (attenuator) automatic adjustment.

• Perform continuous playback (error rate display, jump test)

• Continuous playback from the specified address is performed.

• 1 line, 10 lines or 384 lines manual jump is performed.

• C1 error rate display (pit section), ADIP error rate display (groove section)

• The temperature correction is performed only when servo start is performed, but the posture correction is not performed during continuous playback.

• Continuous record from the specified address is performed.

• Change of record laser output(servo gain is also changed according to laser output).

• The temperature correction is performed only when servo start is performed, but the posture correction is not performed during continuous recording.

• Temperature is displayed. (Updating in real time)

• Seeing the displayed adjustment value, perform

preliminary manual adjustment. (Error rate indication, jump test)

• Temperature is displayed. (Updating in real time)

• Seeing the displayed adjustment value perform manfully the preliminary adjustment.

(Error rate indication, jump test)

• Continuous playback is performed

(error rate display, jump test).

7. RESULT 1 Mode

8. RESULT 2 Mode

9. DIGITAL INPUT Mode

10. ERROR INFORMATION Mode • Error information is initialized

11. NORMAL Mode

12. EEPROM Mode

13. INNER Mode

• The value adjusted in AUTO1 or MANUAL1 is indicated.

• (Execution in servo "OFF" state").

• The value adjusted in AUTO 2 or MANUAL 2 is indicated.

• Adjustment value is changed manually. (error rate display, jump test).

• Digital input information is displayed.

• Error information is displayed.

• The mode is changed from the TEST mode to the normal mode without adjustment.

• In the normal mode the internal operation mode, memory capacity, etc. areindicated.

• In the normal mode both temperature correction and posture correction are perfomed.

• Factors of digital servo are changed manually. (Each servo is turned on individually.)

• Cut-off frequency of BASS1, BASS2 and BASS3 is selected manually.

• Temperature detection terminal voltage is measured, and the reference value is set.

• Defaults are selected and set.

• Setting of EEPROM protect area is updated. (In case of protect releasing)

• Determine the position where the INNER switch is turned on. (only high reflection disc).

• The temperature correction is performed only when servo start is performed, but the posture correction is not performed.

– 10 –

MD-MT20H/16E

Operation in each TEST mode

1. AUTO1 Mode

• When the STOP button is pressed while the AUTO1 menu appears or during automatic adjustment, the mode changes to the TEST mode stop state. At this time the adjustment value is not output.

• Be sure to adjust, using the specified disc MMD-213A or MMD-212.

At this time release the EEPROM (IC402) protection. (Refer to EEPROM write procedure.)

• Adjustment NG; Adjustment item out of range, focus ON failure, and adjustment error

• When the PLAY button is pressed while ADJ. OK is displayed, AUTO2 is executed.

2. AUTO2 Mode

• When the STOP button is pressed while the AUTO2 menu appears or during automatic adjustment, the mode changes to the TEST mode stop state. At this time the adjustment value is not output.

• Adjustment NG; Adjustment item out of range, and adjustment error.

• When the PLAY button is pressed while ADJ. OK is displayed,TEST_PLAY is executed.

3. TEST-PLAY Mode

• When the STOP button is pressed while the TEST-PLAY menu appears, or in TEST-PLAY or continuous playback mode, the mode changes to the TEST mode stop state.

• When the PLAY button is pressed while the TEST-PLAY menu appears,continuous playback is initiated from the current pickup position.

• Whenever the DISP button is pressed in the TEST-PLAY menu, the target address changes as follows.

When the PLAY button is pressed while a target address is displayed, continuous playback is performed after searching that address.

• Each time the MODE button is pressed while the TEST-PLAY mode target address is displayed, the digit which is changed by pressing the SKIP UP/DOWN button is changed as follows.

• When the SKIP UP button is pressed in the TEST-PLAY mode target address is displayed, the digit of address specified by the MODE button is set to +1h. (0 to F)

• When the SKIP DOWN button is pressed in the TEST-PLAY mode target address is displayed, the digit of address specified by the MODE button is set to -1h. (0 to F) * When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.

• When the BASS button is pressed in the continuous playback mode, the number of jump lines changes as follows.

* After the number of jump lines is indicated for one second, the address indication is restored. [ T R _ ]

• When the SKIP UP button is pressed in the continuous playback mode, the specified number of lines is jumped in the FWD direction.

• When the SKIP DOWN button is pressed in the continuous playback mode, the specified number of lines is jumped in the REV direction. * When the SKIP UP/DOWN button is held down, jump is repeated every approx. 100 ms.

•Whenever the DISP button is pressed in the continuous playback mode, the indication changes as follows. * Pre-mastered disc

* Recordabl disk

0032 — 03C0 — 0700 — 08A0 — 0950— 0032 —

0032 — 0032 — 0032 — 0032 —

1 — 10 — 384 — 1

Continuous playback (SUBQ address indication) [ S Q ]

|

Continuous playback (C1 error indication) [ C E ]

|

Continuous playback (SUBQ address indication) [ S Q ]

Continuous playback (ADIP address indication) [ A P ]

|

Continuous playback (C1 error indication) [ C E ]

|

Continuous playback (ADIP error indication) [ A E ]

|

Continuous playback (ADIP address indication) [ A P ]

4. TEST-REC Mode

• When the STOP button is pressed while the TEST-REC menu appears, or in the TEST-REC mode or continuous record mode, the mode changes to the TEST mode stop state.

• When the PLAY button is pressed while the TEST-REC menu appears, the continuous record is initiated from the current pickup position.

• Whenever the DISP button is pressed in the TEST-REC menu, the target address changes as follows.

0032 — 03C0 — 0700 — 08A0 —0950 — 0032 —

When the PLAY button is pressed while a target address is displayed, continuous playback is performed after searching that address.

• Whenever the MODE button is pressed in the TEST-REC mode target address is displayed, the digit which is changed by the SKIP UP/

DOWN button changes as follows.

0032 — 0032 — 0032 — 0320 —

• When the SKIP UP button s pressed in the TEST-REC mode target address is displayed, the digit of address specified by the BASS button is set to +1h.(0 to F)

• When the SKIP DOWN button is pressed in the TEST-REC mode target address is displayed, the digit of address specified by the BASS button is set to -1h. (0 to F)

* When the SKIP UP/DOWN button is held down, the setting changes continuously, one cycle being 100 ms.

– 11 –

MD-MT20H/16E

5. NORMAL Mode

• When the STOP button is pressed while the NORMAL menu appears, the mode changes to the TEST mode stop state.

• Indication during operation Indication of memory capacity on main unit LCD [ ] + Level meter

: Internal mode : Address (Cluster section)

• Selection of sound volume, BASS, etc. is possible (without indication)

• Recording is also possible.

• If the STOP button is pressed during operation in the NORMAL mode, the NORMAL mode is canceled, and the power is turned off.

6. Error data display Mode

• Reversing when SKIP DOWN button is pressed

• When the STOP button is pressed while the error data indication menu appears or during error data indication, the mode changes to the TEST mode stop state.

• Error data 0 is the latest error.

• Error which occurred in the TEST mode is also stored in the memory.

• When the DISP button is pressed while the error data indication menu appears, the error data is initialized. [ C L E A R _ ]

: Error Code

•

Explanation of error history code

12h : RF side FG, TG, and TCRS adjustment termination failure 13h : Adjustment servo retraction excessive retrial 16h : C. IN detection time-over 17h : A, B, E, F, and TCRSO offset measurement value out of

tolerable range 21h : Focus retraction completion allowable time-over 23h : Track search completion allowable time-over 24h : Disc linear speed measurement failure 32h : P-TOC read failure 42h : U-TOC read failure 44h : U-TOC write data write disabled/read check error 52h : SD write data write disabled 71h : Pickup position initialization time-over 72h : EEPROM data read check sum error 73h : Record head drive disabled (by EJECT lever) 82h : Power overvoltage detection 91h : Ambient temperature is higher that the allowable tempera-

ture.

: Address (Sector section)

7. INNER Mode

• when the STOP button is pressed on the INNER menu (SQ______ ), the state is changed to the TEST mode STOP state.

• : Address

– 12 –

MD-MT20H/16E

EEPROM (IC402) writing procedure

1. Procedure to replace EEPROM and write initial value of microcomputer in EEPROM

(1) Replace EEPROM. (2) Deprive EEPROM of protection (connect the pins 8 and 6 of IC402). (3) Refer to the latest EEPROM data list. (4) Press the Display button, Ente button and Play button to start the test mode. (5) Version display

[ V e r . ]

(6) The whole LCD lights. (7) Test mode stop state.

[ T E S T ]

(8) Press the "BASS" button, and press twice the "SKIP DOWN" button.

[ E E P R O M ]

(9) Perform the operation to display "EEPROM SETTING MODE CHART", compare the EEPROM DATA LIST with the display,

and set according to the EEPROM DATA LIST with the VOL UP or VOL DOWN key.

(10)

Set the temperature reference. (Refer to the Temperature Reference Setting Method.)

(11)

Set according to the EEPROM DATA LIST.

(12)

Press the Stop button.

[ T E S T ]

(13)

Press the Stop button.

(14)

After data is written in EEPROM, turn off power .

(15)

Restore protection of EEPROM (Disconnect connection made in Step (2) above).

X

EEPROM version (f ~ Z) Microcomputer ROM version

2. Temperature reference setting method

[1] Measurement, calculation and setting procedure

(1) Set the TEST mode.

• Set TEST 1, 0 = '01', and turn on power (or set PLAY ON in standby state). (2) Start the EEPROM mode 'Temp' menu.

• Key operation in order of BASS, SKIP-DOWN x 2 times, PLAY, PLAY in the test mode STOP state.

• 'TM$$%%' is displayed. ($$= Temperature code, %% = Temperature reference) (3) Once press SKIP-UP, and determine the displayed microcomputer TEMP input AD value.

• 'TPin##' is displayed. (## = TEMP input AD value) (4) At the ambient temperature, determine the temperature corrected value from the temperature measurement value

correction table.

(5) Determine the temperature reference, using the following formula.

• Temperature reference = Microcomputer TEMP input AD value + Temperature corrected value (6) Set the temperature reference value by button operation , and check whether the temperature code indication corresponds to "Temperature

Code Identification Table".

[2] Temperature measurement value correction table

Ambient

temperature

+ 9oC ~ +11oC - 05h + 10.0oC +12oC ~ +14oC - 04h + 12.7oC +15oC ~ +16oC - 03h + 15.4oC +17oC ~ +19oC - 02h + 18.2oC +20oC ~ +22oC - 01h + 20.9oC +23oC ~ +24oC ± 00h + 23.6oC +25oC ~ +27oC + 01h + 26.3oC +28oC ~ +30oC + 02h + 29.0oC +31oC ~ +33oC + 03h + 31.8oC

Temperature

correction

Center

temperature

Ambient

temperature

- 9oC ~ +10oC 08h + 0.5oC

+ 3oC ~ +21oC 07h + 12.5oC +15oC ~ +33oC 06h + 23.6oC +26oC ~ +43oC 05h + 35.0oC

Temperature

correction

Center

temperature

– 13 –

MD-MT20H/16E

EEPROM DATA LIST (EEPROM version f)

TEMP setting

Item display Set values

T M _ _ Calculate values

Fucus setting

Item display Set values

F G _ _ B 0 H F F 1 _ 7 0 H F F 2 _ E 8 H F Z H _ E D H F L n _ 0 A H D J G _ 1 4 H F L V _ 3 3 H W T f _ 2 0 H F S S _ E 9 H

Tracking setting

Item display Set values

T G _ _ 4 8 H T F 1 _ 7 0 H T F 2 _ E 0 H T F S _ 0 0 H T B o _ 4 4 H T B t _ 2 0 H T K o _ 4 4 H T K t _ 1 D H T D o _ 6 7 H T D t _ 3 4 H T G R _ 0 0 H S C t _ 4 0 H S C m _ 5 3 H C L p _ 1 8 H C L r _ 2 8 H J P I _ 0 1 H K 1 0 _ 6 5 H

Spindle setting

Item display Set values

S P G _ 1 4 H S P i _ E 0 H S P m _ A 0 H S P o _ 6 8 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 _ 7 F H S P K _ E B H

BASS setting

Item display Set values

B S 1 _ 3 F H B S 2 _ 1 F H B S 3 _ E 2 H

Sled setting

Item display Set values

S L G _ D F H S L 2 _ 2 0 H S L M _ 7 F H S L V _ D 7 H S K k _ D 2 H S K t _ 7 0 H S K m _ 7 8 H W T m _ 2 4 H M V 1 _ 4 F H M V 2 _ A A H S R V _ 0 A 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 _ E 0 H

EQ. 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 F L p _ 0 9 H

Control setting

Item display Set values

C T 0 _ 0 5 H C T 1 _ 1 1 H C T 2 _ 7 F H C T 3 _ 3 0 H R C 0 _ C 0 H R C 1 _ F E H S Y C _ A 6 H P W L _ 0 3 H D R 1 _ 9 2 H D R 2 _ C 8 H I N 1 _ D 3 H I N 2 _ 6 4 H I N 3 _ D 2 H I N H _ 6 4 H D R H _ C 8 H P L E _ 1 B H R C E _ 4 2 H E L T _ 7 6 H S L T _ 4 3 H S P M _ 0 0 H M S L _ 0 0 H U S 0 _ 0 0 H U S 1 _ 0 0 H U S 2 _ 0 0 H

– 14 –

MD-MT20H/16E

: Test Mode STOP

: Pre-auto adjustment menu

: ATT auto adjustment menu

: Continuous record menu

: EEPROM setting menu

: INNER switch position measurement menu

BASS

T E S T

Slide external

periphery move

Slide internal

periphery move

Tset Mode Menu

Test Mode Change Chart

A U T O 1

A U T O 2

SKIP UP SKIP DOWN

SKIP DOWN

SKIP UP SKIP DOWN

T R E C

SKIP UP SKIP DOWN

: Continuous playback menu

T P L A Y

SKIP UP SKIP DOWN

: Digital input signal monitor menu

D i n M o n

SKIP UP SKIP DOWN

E E P R O M

SKIP UP SKIP DOWN

I N N E R

SKIP UP

SKIP DOWN

SKIP UP

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [PLAY] button operation is performed in the specific menu, the operation of this

menu is executed.

: Pre-adjustment value check menu

R S L T 1

: ATT adjustment value check menu

R S L T 2

: Pre-manual adjustment menu

M A N U 1

: ATT manual adjustment menu

M A N U 2

: Error history display menu

E D A T A

: Test mode normal playback menu

N O R M A L

: Preautomatic Adjustment menu

: Preadjustment error (adjustment value output)

: During preadjustment adjustment

Adjustment error

Normal end

: Preadjustment normal end (adjustment value output)

: During ATT automatic adjustment

PLAY

A U T O 1

Preautomatic Adjustment

A D J . O K

A D J . N G

A T 2

A T 1

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* " " represent the adjustment number as follows.

0 0 : Innermost periphery move

0 2 : ABEF offset tentative measurement

0 4 : RF side focus gain coarse adjustment

0 5 : Focus ATT tentative setting

0 6 : RF side bit section tracking gain adjustment

0 7 : COUT level setting for pit section adjustment

0 8 : External periphery move

0 9 : RF side groove section tracking gain adjustment

1 0 : COUT level setting for groove section adjustment

1 1 : RF side TCRS gain adjustment

1 2 : Tracking ATT initial setting

1 3 : RF side focus gain minor adjustment

1 4 : Focus ATT initial setting

1 5 : S gain "High" ABEF offset measurement

1 6 : TCRS offset measurement

1 7 : S gain "Low" ABEF offset measurement

– 15 –

MD-MT20H/16E

: ATT Autoadjustment menu

: ATT adjustment error (adjustment value output)

: During ATT autoadjustment

Adjustment error

Normal end

: ATT adjustment normal end (adjustment value output)

: Continuous playback (high reflection)

: Continuous playback (low reflection)

PLAY

A U T O 2

ATT Auto Adjustment

A D J . O K

A D J . N G

S Q # # # #

A P # # # #

A T 2

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* " " represent the adjustment number as follows.

0 0 : Innermost periphery move

0 3 : Pit section tracking ATT setting

0 4 : Pit section focus ATT setting

0 6 : External periphery move (low reflection only)

0 7 : TCRS ATT setting (low reflection only)

0 8 : Groove section tracking ATT setting (low reflection only)

0 9 : Groove section focus ATT setting (low reflection only)

: Continuous playback menu

: Continuous playback (pit section)

: Continuous playback (groove section)

# # # # : Address

: Continuous playback (pit section)

: Continuous playback (groove section)

# # # # : Address

PLAY

T P L A Y

Continuous Playback

S Q # # # #

A P # # # #

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* In the start address set state the start address changes as follows when the [DISP] button is pressed.

0 0 3 2

H

(initial value) 0 3 C 0

H

0 7 0 0

H

0 8 A 0

H

A d 0 0 3 2

A d 0 3 C 0

DISP

A d 0 7 0 0

DISP

A d 0 8 A 0

* In the start address setting state the start address change digit changes when the [BASS] button is pressed.

1st digit (initial value) 2nd digit 3rd digit

A d 0 0 3 2

MODE

A d 0 0 3 2

MODE

* In the continuous playback state the number of jump lines changes as follows shown

the [BASS] button is pressed.

1 (initial value) 10 384

1 T R

1 0 T R

BASS

3 8 4 T R

BASS

• Continuous playback from current pickup position

: Continuous playback menu

: Start address setting

DISP

T P L A Y

A d 0 0 3 2

PLAY

S Q # # # #

A P # # # #

• Continuous playback from any address

* In the start address set state the value of selection digit changes in the range of "0h to Fh"

when the [SKIP UP/DOWN] button is pressed

* When the [SKIP UP] button is pressed in the continued playback mode, jump of specified

number of lines occurs in the external periphery direction.

If the key is held down jump occurs continuously (100 ms cycle).

* When the [SKIP DOWN] button is pressed in the continuous playback mode, jump of

specified number of lines occurs in the internal periphery direction.

If the key is held down, jump occurs continuously (100 ms cycle).

A d 1 9 5 0 H

0 9 5 0

H

– 16 –

MD-MT20H/16E

: Continuous record menu

PLAY

T R E C

Continuous Rrecord

A P # # # #

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* In the start address set state the start address changes as follows when the [DISP] button is pressed.

• Continuous record from the current pickup position

: Continuous record menu

: Start address setting

: Continuous record

# # # #: Address

: Continuous record

# # # #: Address

PLAY

T R E C

A d 0 0 3 2

PLAY

A P # # # #

• Continuous record playback from any address

A d 0 0 3 2

0 0 3 2

H

(initial value) 0 3 C 0

H

0 7 0 0

H

0 8 A 0

H

A d 0 3 c 0

DISP

A d 0 7 0 0

DISP DISP

DISP

A d 0 8 A 0

* In the start address setting state the start address change digit changes when the [BASS] button is pressed.

A d 0 0 3 2

1st digit (initial value) 2nd digit 3rd digit

A d 0 0 3 2

MODE

A d 0 0 3 2

MODE

A d 1 9 5 0

: INNER switch position measurement menu

: Continuous playback (pit section)

# # # # : Address

PLAY

I N N E R

Inner Switch Position Measurement

S Q # # # #

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

: TEST mode normal playback menu

: Continuous playback

@@@@@@: Mode and address display

PLAY

N O R M A L

Test Mode Normal Playback

@@@@@@

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the NORMAL mode is canceled, the power is turned off.

: Error history display menu

: Error history 0 display

§ § : Error code

: Error history 1 display

§ § : Error code

: Error history 2 display

§ § : Error code

: Error history 3 display

§ § : Error code

: Error history 4 display

§ § : Error code

: Error history 5 display

§ § : Error code

: Error history 6 display

§ § : Error code

: Error history 7 display

§ § : Error code

: Error history 8 display

§ § : Error code

: Error history 9 display

§ § : Error code

PLAY

E D A T A

Error History Display

E 0 § §

E 1 § §

: Error history display menu

: Error history clear

PLAY

E D A T A

C L E A R

SKIP UP SKIP DOWN

E 2 § §

SKIP UP SKIP DOWN

E 3 § §

SKIP UP SKIP DOWN

E 4 § §

SKIP UP SKIP DOWN

E 5 § §

SKIP UP SKIP DOWN

E 6 § §

SKIP UP SKIP DOWN

E 7 § §

SKIP UP SKIP DOWN

E 8 § §

SKIP UP SKIP DOWN

E 9 § §

SKIP UP SKIP DOWN

• Error history clear

• Error history display

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

– 17 –

MD-MT20H/16E

: EEPROM setting menu

: Focus setting menu

: Spin setting menu

: Tracking setting menu

: Sled setting menu

: BASS setting menu

: TEMP setting menu

: Adjustment setting menu

: Digital EQ setting menu

: Control setting menu

PLAY

E E P R O M

EEPROM Setting

F o c u s

S p i n

SKIP UP SKIP DOWN

T r a c k

SKIP UP SKIP DOWN

S l e d

SKIP UP SKIP DOWN

B a s s

SKIP UP SKIP DOWN

T E M P

SKIP UP SKIP DOWN

A D J S E T

SKIP UP SKIP DOWN

D E Q S E T

SKIP UP SKIP DOWN

C T R L

SKIP UP SKIP DOWN

SKIP UP

SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [PLAY] button operation is performed in the specific state, the specific setting menu is set.

: BASS setting menu

PLAY

B a s s

BASS Setting

B S 1

B S 2

SKIP UP SKIP DOWN

B S 3

SKIP UP SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to

"TEMP SETTING menu".

* In the specific state the setting changes in the range of "00h to FFh" when the

[VOL UP/DOWN] button is pressed.

(The upper limit varies depending on the items)

* When the [MODE] button is pressed in each state, the set digit is changed.

: Focus setting menu

PLAY

F o c u s

Focus Setting

F G

F F 1

SKIP UP SKIP DOWN

F F 2

SKIP UP SKIP DOWN

F Z H

SKIP UP SKIP DOWN

F L n

SKIP UP SKIP DOWN

D J G

SKIP UP SKIP DOWN

F L V

W T f

SKIP UP SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to "TEMP SETTING menu".

* In specific state the setting changed in the range of "00h to FFh" when the [VOL UP/DOWN] button is pressed.

(The upper limit varies depending on the items)

* When the [MODE] button is pressed in each state, the set digit is changed.

F S S

SKIP UP SKIP DOWN

– 18 –

MD-MT20H/16E

: Spin setting menu

PLAY

S p i n

Spin Setting

S P G

S P i

SKIP UP SKIP DOWN

S P m

SKIP UP SKIP DOWN

S P o

SKIP UP SKIP DOWN

S P 1

SKIP UP SKIP DOWN

S P 2

SKIP UP SKIP DOWN

S P 3

SKIP UP SKIP DOWN

S P 4

SKIP UP SKIP DOWN

S P 5

SKIP UP SKIP DOWN

S P D

SKIP UP SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to

"TEMP SETTING menu".

* In specific state the setting changed in the range of "00h to FFh" when the

[VOL UP/DOWN] button is pressed.

(The upper limit varies depending on the items)

S P K

SKIP UP SKIP DOWN

* When the [MODE] button is pressed in each state, the set digit is changed.

: Tracking setting menu

PLAY

T r a c k

Tracking Setting

T G

T F 1

SKIP UP SKIP DOWN

T F 2

SKIP UP SKIP DOWN

T F S

SKIP UP SKIP DOWN

T B o

SKIP UP SKIP DOWN

T B t

SKIP UP SKIP DOWN

T K o

SKIP UP SKIP DOWN

T K t

SKIP UP SKIP DOWN

T D o

SKIP UP SKIP DOWN

T D t

SKIP UP SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to

"TEMP SETTING menu".

* In the specific state the setting changes in the range of "00h to FFh" when the [VOL UP/DOWN]

button is pressed. (The upper limit varies depending on the items)

T G R

SKIP UP SKIP DOWN

S C t

SKIP UP SKIP DOWN

S C m

SKIP UP SKIP DOWN

C L p

SKIP UP SKIP DOWN

C L r

SKIP UP SKIP DOWN

J P I

SKIP UP SKIP DOWN

K 1 0

SKIP UP SKIP DOWN

* When the [MODE] button is pressed in each state, the set digit is changed.

– 19 –

MD-MT20H/16E

: Slide setting menu

PLAY

S l e d

Sled Setting

S L G

S L 2

SKIP UP SKIP DOWN

S L M

SKIP UP SKIP DOWN

S L V

SKIP UP SKIP DOWN

S K k

SKIP UP SKIP DOWN

S K t

SKIP UP SKIP DOWN

S K m

SKIP UP SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to

"TEMP SETTING menu".

* In the specific state the setting changes in the range of "00h to FFh" when the

[VOL UP/DOWN] button is pressed.

(The upper limit varies depending on the items)

* When the [MODE] button is pressed in each state, the set digit is changed.

W T m

SKIP UP SKIP DOWN

M V 1

SKIP UP SKIP DOWN

M V 2

SKIP UP SKIP DOWN

S R V

SKIP UP SKIP DOWN

: Temp setting menu

: TEMP reference

: Reference

§ § : Temperature code

: TEMP A/D input value

: Measurement value

PLAY

T e m p

TEMP Setting

T M § §

T p i n

SKIP UP SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to

"TEMP SETTING menu".

* In the specific state the setting changes in the range of "00h to FFh" when the

[VOL UP/DOWN] button is pressed.

* When the [MODE] button is pressed in each state, the set digit is changed.

: Adjustment setting menu

PLAY

A D J S E T

Adjustment Setting

C O K

F A T

SKIP UP SKIP DOWN

T A T

SKIP UP SKIP DOWN

C A T

SKIP UP SKIP DOWN

F A B

SKIP UP SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to

"TEMP SETTING menu".

* In the specific setting display state the setting change digit changes when the [P-MODE]

button is pressed.

1st digit (initial value) 2nd digit

P-MODE

* In the specific state the setting changes in the range of "0h to Fh" when the [VOL UP/DOWN]

button is pressed.

* When the [MODE] button is pressed in each state, the set digit is changed.

– 20 –

MD-MT20H/16E

: Digital EQ setting menu

PLAY

D E Q S E T

Digital EQ Setting

H Q 1

H Q 2

SKIP UP SKIP DOWN

H S G

SKIP UP SKIP DOWN

H S O

SKIP UP SKIP DOWN

L Q 1

SKIP UP SKIP DOWN

L Q 2

SKIP UP SKIP DOWN

L S G

SKIP UP SKIP DOWN

L S O

SKIP UP SKIP DOWN

G Q 1

SKIP UP SKIP DOWN

F L p

SKIP UP SKIP DOWN

G Q 2

SKIP UP SKIP DOWN

G S G

SKIP UP SKIP DOWN

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to

"TEMP SETTING menu".

* In the specific setting display state the setting change digit changes

when the [P-MODE] button is pressed.

1st digit (initial value) 2nd digit

P-MODE

* In the specific state the setting changes in the range of "0h to Fh" when the [VOL UP/DOWN]

button is pressed.

* When the [MODE] button is pressed in each state, the set digit is changed.

: Control setting menu

PLAY

C T R L

Control Setting

C T 0

C T 1

SKIP UP SKIP DOWN

C T 2

SKIP UP SKIP DOWN

C T 3

SKIP UP SKIP DOWN

R C 0

SKIP UP SKIP DOWN

R C 1

SKIP UP SKIP DOWN

S Y C

SKIP UP SKIP DOWN

P W L

SKIP UP SKIP DOWN

D R 1

SKIP UP SKIP DOWN

D R 2

SKIP UP SKIP DOWN

I N 1

SKIP UP SKIP DOWN

I N 2

SKIP UP SKIP DOWN

I N 3

SKIP UP SKIP DOWN

I N H

SKIP UP SKIP DOWN

Continued to

the next page

SKIP UP SKIP DOWN

– 21 –

MD-MT20H/16E

Continued from

the preceding page

D R H

SKIP UP SKIP DOWN

P L E

SKIP UP SKIP DOWN

R C E

E L T

S L T

SKIP UP SKIP DOWN

S P M

SKIP UP SKIP DOWN

M S L

U S 0

SKIP UP SKIP DOWN

U S 1

U S 2

* When the [STOP] button is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] button operation is performed in the specific state, the menu changes to

"TEMP SETTING menu".

* In the specific setting display state the setting change digit changes when the [P-MODE]

button is pressed.

1st digit (initial value) 2nd digit

P-MODE

* In the specific state the setting changes in the range of "0h to Fh" when the

[VOL UP/DOWN] button is pressed.

* When the [MODE] button is pressed in each state, the set digit is changed.

– 22 –

NOTES ON SCHEMATIC DIAGRAM

MD-MT20H/16E

• 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 electrolytic capacitor, the expression “capacitance/withstand voltage” is used. (CH), (TH), (RH), (UJ): Temperature compensation (ML): Mylar type

TOP VIEW

B

(G)

(3)

E

TOP

VIEW

C

(D)

(2)

(S)

1

2SA17457 2SC4213 B RN1103

• The indicated voltage in each section is the one measured

• Parts marked with “ ” ( ) are important for

1SS361

by Digital Multimeter between such a section and the chassis with no signal given.

maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

REF. NO

SW401 EJECT OFF—ON SW402 HOLD OFF—ON SW403 DISC LID OPEN OFF—ON SW902 DISC PROTECT OFF—ON

DESCRIPTION

POSITION

TOP VIEW

SB10015 C

TOP VIEW

1SS372

TOP VIEW

1SS360

TOP VIEW

SBE803 2SA1873 GR

Figure 23 TYPES OF TRANSISTOR AND DIODE

– 23 –

MD-MT20H/16E

VOLT A GE

IC101

VOLTAGE

NO.

0.72V

1

0.72V

2

3

0.72V

4

0.72V

1.24V

5

1.24V

6

0.71V

7

1.24V

8

1.24V

9

10

1.24V

11

1.24V

12

1.24V

13

2.5V

14 15

0.18V

2.5V

16 17

2.5V

18

0V

19

0V

20

1.48V

21

2.35V

22

0V

23

0V

24

2.5V

1.24V

25

1.24V

26

1.24V

27

1.24V

28

1.24V

29

1V

30

1.24V

31

1.24V

32

1.24V

33

NC

34

1.25V

35

1.25V

36 37

0.17V

1.24V

38

1.24V

39

1.24V

40

1.24V

41

2.5V

42

0V

43

0V

44

1.24V

45

1.24V

46

1.24V

47

0V

48

IC202

VOLTAGE

NO.

1.28V

1

1.63V

2

2.57V

3

1.76V

4

1.44V

5

1.44V

6

0.6V

7

0.6V

8

0.6V

9

2.56V

10

0.6V

11

1V

12

1V

13

1V

14

1V

15

1.8V

16

1.9V

17

1.7V

18

1.7V

19

0V

20

IC354

VOLTAGE

NO.

–

1

–

2

0V

3

0V

4

0V

5

PIN NO.

1 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

PIN NO.

1 2 3 4 5 6 7 8 9

10 11 12 13 14

PIN NO.

1 2 3 4 5 6 7 8

IC201

VOLTAGE

0.88V

2.5V

1.27V 0V

1.25V

1.3V

2.2V 2V

0V 0V 0V 0V 1V 0V 0V 0V 0V 0V 0V 0V 0V

0.51V

0.49V

1.44V

1.13V

2.56V

0.6V 1V 1V

0.8V

0.8V 0V

2.13V

1.4V

1.56V

1.1V

1.75V

2.57V

1.74V

1.61V 0V

1.93V 1V

0.91V

IC351

VOLTAGE

0V 0V

4.42V 0V 0V

4.42V 0V

0.9V

4.42V 0V

0.9V

4.42V 0V

4.46V

IC353

VOLTAGE

2.74V – – 0V 0V – –

2.74V

VOLTAGE

NO.

51

1V 0V 0V

52

0V

53

0V 0V

54

0V

55

2V

56

0V

57

0V

58

0V

59

0V

60

0.14V

61

2V

62

0V

63

0.9V

64

0.9V

65

1.66V

66

1V

67

2V

68

0V

69

1V

70

1V

71

2V

72

0V

73

0V

74

0V

75

0V

76

0V

77

2V

78

0V

79

2V

80

1V

81

2V

82

0V

83

0V

84

1V

85

2V

86

2V

87

0V

88

2.36V

89 90

0.2V

91

1.65V 0V

92

0.1V

93

0.7V

94 95

1.35V

1.76V

96

0.32V

97

2.27V

98

2.36V

99

100

0.2V

IC901

VOLTAGE

NO.

0V

1

0V

2

0V

3

0V

4

0V

5

0V

6

–

7

2.44V

8

2V

9

0V

10

2.48V

11

0.67V

12

0V

13

2.35V

14

0V

15

2.5V

16

0V

17

0V

18

0V

19

0V

20

IC872

VOLTAGE

NO.

4.64V

1

4.64V

2

NC

3

0V

4

VOLTAGE

NO.

1 2

2.5V 0V

3 4

2.35V NC

5

0.18V

6

0V

7

0.23V

8

0V

9

10

2.23V

2.12V

11

2.04V

12

2.25V

13

2.35V

14

0.18V

15

0V

16

0V

17

0V

18

2.35V

19

0.2V

20

2.35V

21

2.26V

22

0.14V

23

1.6V

24

0V

25

0.08V

26

1.6V

27

1.26V

28

1.7V

29

0.27V

30

0V

31

0V

32

2.1V

33

2.72V

34

2.72V

35

2.35V

36

0V

37

2.34V

38

0V

39

2.35V

40

0V

41

2.35V

42

2.35V

43

0V

44

0V

45

2.35V

46

0V

47

0V

48

0V

49

–

50

Preform the measurement on the IC401 pin 37 in the TEST mode with GND short-circuited. (LCD is in "TEST" state.)

IC402

VOLTAGE

NO.

1 2 3 4 5 6 7 8

IC431

VOLTAGE

NO.

1 2 3 4

IC851

VOLTAGE

NO.

1 2 3 4 5

IC401

PIN NO.

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

100

2.34V 0V – – 0V 0V

0.26V

2.34V

2.34V NC 0V

NC

1.16V 0V

1.17V

2.33V

VOLTAGE

2.32V

2.34V 0V

2.32V 0V

2.34V

0.3V

2.35V

2.28V

2.35V

1.08V

1.13V 0V

2.34V

2.32V

2.34V

2.1V

2.32V

1.93V

2.34V

0.82V

1.46V

1.33V

2.34V

2.34V 0V

1.62V 0V 0V

2.32V

2.33V

2.34V

1.7V

1.5V

0.12V

2.33V

2.34V

0.18V

2.33V

IC501

VOLTAGE

NO.

2.5V 0V

1

2.5V

2

0V

3

0V

4

0V

5

0V

6

0V

7

0V

8

1V

9

1V

10

1V

11

0V

12

0V

13

2.5V

14

0V

15

0V

16

0V

17

0V

18

0V

19

0V

20

0V

21

0V

22

2.5V

23

2.5V

24

IC601

VOLTAGE

NO.

0V

1

1V

2

2.35V

3

0V

4

4.72V

5

0V

6

0V

7

0V

8

4.72V

9

4.72V

10

0V

11

0V

12

0V

13

4.72V

14

0V

15

0V

16

0V

17

0V

18

0V

19

0V

20

0V

21

0V

22

4.72V

23

0V

24

0V

25

0V

26

4.72V

27

4.72V

28

0V

29

0V

30

0V

31

4.72V

32

0V

33

0V

34

2.5V

35

9.67V

36

IC651

VOLTAGE

NO.

2.74V

1

NC

2

0V

3

0V

4

0V

5

0V

6

–

7

NC

8

–

9

NC

10

IC701

VOLTAGE

NO.

1

0V

2

0V

3

0V

4

0V

5

0V

6

0V

7

0V

8

0V

9

0V

10

0V

11

0V

12

0V

13

0V

14

0V

15

0V

16

–2.48V

17

0V

18

0V

19

2.72V

20

0.86V

21

0V

22

0V

23

0V

24

IC702

VOLTAGE

NO.

1

0V

9.66V

2

2.34V

3

4

NC

4.46V

5

IC703

VOLTAGE

NO.

1

0V

2

0V 0V

3

4

0V 0V

5

0V

6

0V

7

0.97V

8

0V

9

10

0V 0V

11

0V

12

2.34V

13

0V

14

0V

15

0V

16

–2.87V

17

0V

18

0V

19

2.74V

20

0.85V

21

0V

22

0V

23

0V

24

IC771

VOLTAGE

NO.

0V

1

2.74V

2

2.74V

3

NC

4

2.5V

5

IC841

VOLTAGE

NO.

1

NC

4.49V

2

4.64V

3

0V

4

2.34V

5

IC801

VOLTAGE

NO.

0V

1

0.2V

2

0V

3

0V

4

0.73V

5

0.73V

6

IC802

VOLTAGE

NO.

5V

1

5V

2

0.7V

3

5V

4

5V

5

5V

6

IC805

VOLTAGE

NO.

1

2.15V

2

1.38V

3

–

4

–2.86V

5

0V 0V

6

–1.49V

7

2.73V

8

IC806

VOLTAGE

NO.

1

0V

2

0V

3

4.44V

4

0V

5

0V 0V

6

IC808

VOLTAGE

NO.

1

2.15V

2

0.56V

3

0.56V

4

0V

5

0.56V

2.74V

6

IC807

VOLTAGE

NO.

1

2V

2

1.98V

3

1.98V

4

0V

5

0V

0.94V

6

IC821

VOLTAGE

NO.

1.25V

1

0.94V

2

1.16V

3

1.15V

4

1.13V

5

0V

6

0.54V

7

4.49V

8

0V

9

0.41V

10

1V

11

1V

12

IC871

VOLTAGE

NO.

4.64V

1

4.48V

2

NC

3

0V

4

4.63V

5

– 24 –

J701

OPTICAL IN

UNIT

OPTICAL IN

+2.5V

J701

LINE IN

J702

MIC IN

(READY FOR

PLUG/IN POWER)

2

3

L-CH

R-CH

RIPPLE

24 L-CH

22 R-CH

Q721

FILTER

+4.5V

5

IC702

HEADPHONES

4.5V

62GR4522

REGULATOR

J703 LINE

L-CH

2

MD-MT20H/16E

J703

REMOTE

CONTROL

R-CH

18

19

J801

DC IN JACK

(4~5.5V)

IC802 FDC634P

IC801 HN1C01FU

OVER VOLTAGE

REVERSE CONNECTION

PROTECTION CIRCUIT

Ni - MH Battery

or

Dry Battery

(2 pieces)

1.7~3.4V

CHARGING CIRCUIT

IC803 FDT439N

IC805 NJM022V

IC806 NDC631N

IC807 RN4904

IC808 HN1C01FU

2.8V

IC871

IC872

S8324A28

S80813LN

UP CONVERTER

+B

L-CH

1-9,

IC202

IX2567AF

10

4MBIT D-RAM

R-CH

11-19

6 5

IC701

IR3R54N

AUDIO AMP.

10

VCC VEE

20 17

57,66

26-29,

32-37,

31

+2.7V

IC703

IR3R54N

AUDIO AMP.

5

6

19

1,2,23,24,14

IC501

AK4519VF

AD/DA CONVERTER

12

15

74

73

IC201

39-46

LR37811

SERVO ATRAC

ENCODE/DECODE/

3

50

52,53

17

VCC VEE

20

3

+2.5V

5

IC771 62GR2522

2.5V REGULATOR

VDD

+2.0V

62

2

2.0V

82-84,86,

89-100

2

17-24

3

IC200

62FP2002

REGULATOR

AVCC

+2.5V

–2.7V

+2.7V

3

2.5V

IC820

62FP2502

REGULATOR

2

+7~+10V

SW401

EJECT

97

98

IC401

SYSTEM

1, 20-30, 73, 93-95

MICROCOMPUTER

92

55

SW403

DISC LID

52,

IX0298AW

4

3

7

OPEN

82 74

9,

11,

69,

14-16

+2.7V

13,

70,

IC821

42

83,

84

1-3

DC/DC

IR3M09N

CONVERTER

3

+2.7V

8

3

VCC

8

6-9

Q873

FETIC

NDS332P

4

LCD UNIT

F871

T0.5A L 63V

2

IC841

XC62HS02

2.35V REGULATOR

5

+2.35V

KEY OPERATION UNIT

1-12

IC651

DRIVER

LB1930M

VCC VS

1

HEAD UP/DOWN

7,9 3,4

M

+2.7V

M903

HEAD

UP/DOWN

MOTOR

+4.5V

IC353

FTD2005

HEAD DRIVER

14

1

IC354

CPH5608

HEAD DRIVER

3

8,11

VCC

1,13

VS

IC351

74ACT02T

HEAD DRIVER

4

+2.7V

HEAD

PLAYBACK SIGNAL RECORD SIGNAL

40

IC101

IR3R55

SIGNAL

13,14

+2.7V

+2.5V

24,42

PROCESSOR

1-2

+2.5V

T F

LASER

OPIC

PICK

Figure 25 BLOCK DIAGRAM

– 25 –

19-22

2,15-17,

36

IC601

MPC17A39

35

4CH PWM DRIVER

VCC VG

13

24,26

29,31

17

16

SPINDLE MOTOR

DRIVER

BA6966FV

1, 3, 4, 5,

6,19,20

M

SW402

HOLD

VM

IC901

NC

5,9,10,14

23,27,28,32

6,8

M901

SPINDLE

MOTOR

SW902

DISC

PROTECT

IC402

EEPROM

S29L294A

M

M902 SLED

MOTOR

MD-MT20H/16E

2

4 4

U

0

3

OPEN

D N

B

C

P

P27 P28

P26

MAIN PWB-A1

A

B

C

FLEXBLE PWB

IC351

D

HEAD DRIVER 74ACT02T

E

F

FLEXIBLE PWB

G

MECHANISM FLEXIBLE PWB ASS'Y

TP103

TP102

TP101

CN101

1

B

A

COM

C357

0.1

IC354 CPH5608

5 4 3

S

G1

G2

D2

D1

1

2

IC353:IC354 HEAD DRIVER

15

L921

100mA

TP666

5

6

1

16

SW902

DISC PROTECT

COM

M

M901 SPINDLE MOTOR

M902

M

SLED MOTOR

PLAYBACK SIGNAL RECORD SIGNAL

VCCPU

TP108

TP109

TP106

TP105

7

5

8

4 3 2

6

7

5

8

4 3 2

6

VCC

DGND

LDON

CVCC

LDVAR

OPTICAL PICKUP UNIT

8 9

1

0 1

1

2

1

3

1

4

1

D351 SBE803

4 5

C351 56P(CH)

C361

0.039

TP665

TP662

TP661

TP660

TP659

TP664

TP663

0

1

3

4

2

9

1

W

U V

-

+

9

VCC

C354

0.1

R361 15

TP658

HEAD

TP110

0 1

10

RF2

TP657

8

3 2 1

TP111

1 1

11

MP/R

IC351

INNSW

TP656

7

2 1

12

AGND

GND

C353 10/6.3

IC353 FTD2005

PDCNT

TP655

6

TP116

TP114

TP115

TP117

5

3

6

7

4

1

15

14

17

13

16

E F T-F+T+

RF4

RF3

VCC

OPIC

7 6 5 4 3 2 1

7

5

8

6

D2S1G2

S2

D1

4 3 2 1

R922 100K

R921 330

TP652

TP651

TP654

TP653

5

4 3 2

1

-

+

M

M903 HEAD UP/ DOWN MOTOR

PH901 PHOTE INTERRUPER

TP118

8 1

18

RF1

G1S2S1

14

CN601

+B

TP119

9 1

19

R351

TP120

IC101 RF SIGNAL PROCESSOR IR3R55

18

TP121

TP122

2

0

1 2

2

21

22

20

F-

R920 100K

2

Q901 RN1113

R905 100K

5.6

R903 330

C903

3.3

TP351

VCCHEAD

C103 1

C102 1

TP144

C104

0.027

R105 390K

2SA17457

C161

1

2

R909

3

10K

1

R906

270K

TP901

R601

56K

13

SPVM

TP601

C608

1

C112

0.033

C111

0.0033

8

6

7

4

ROUT

EFMAGI

TTR

GOUT

RF1

1

R

RF2

and

2

RF3

DIFF

SW

3

RF4

DIFF

4

REFI

5 6

REFO RFADD

BIAS

7

TCGI

8

AIN

9

BIN

10

EIN

11

FIN

12

BIAS

AVCC

STBY

5

3

4 1

1

DRIVER

BA6966FV

C902

0.01

FG

1

BRK- CSL2

2

BRK+

3

STBY

4

RIB

5

VCC

6

VM

7 8

WOUT RF

9

VOUT

0

R161

1.2K

IC901

GND

CSL1

CST COM WIN VIN

IC901

UIN

UOUT

+8

R404

100K

1

CK101

1

0 9 8 7 6 5 4 3 2 1

DISCPR

Q101

C165

0.033 FF+ T+ T-

SPINDLE MOTOR

1 1 1 1 1 1 1 1 1 2

C911

0.1

R403 1K

+B

DCNT1

L609

SL-

SL+

4.7µH

L610

4.7µH L608

4.7µH

SLDRR SLDRF SPDRF

C610

1

C609

1

C110

C109

0.22 1

CK112

1

3

5

2

4

4 4

EFMI

AGND

EFM

AVCC

AGC

EFMAGC

ADIP AGC

LPF HPF

LOGIC

DISC

SGAIN

AGND

DGND

DTEMP

0

6

7

9

8

2

1

CK103

CK102

R154

1.2K

C910

0.033

X176KO

TP145

C130

0.1

R907 180K

R908

100K

C909

0.033 C908

0.22

C905

0.0022

C906

0.0022

C907

0.0022

R901

1

R902

1

R904

33K

SPIN

HDON

1

IC651

HEAD UP/DOWN

DRIVER

LB1930M

1

AGND

2

CLK PS

3 4

OE VD1

5 6

FO1 PGND

7 8

RO1 VD1

9

10

VD2

11

RO2

12

PGND

13

FO2

14

VD2

15

RI1

16

FI1 FI2

17

18

RI2

IC601

4CH PWM DRIVER

MPC17A39

C107

0.012

40 4

EFMO

LATCH 1

2

CK104

G

6

O2

7

8

O1

9

0

GND VD3 FO3

PGND

RO3

VD3 VD4

RO4

IC601

PGND

FO4 VD4 RI3 FI3 FI4 RI4

9 3

ADAG

RF2-1

CLOCK

2 2

TP151

AUSCLK RFLAT TEMP LDON LDVAR OPICGA

G I2 I1

VCC

VG

36

35

VC

34

LG

33

32

31

30

29

28

27

26

25

24

23

22

21

20 19

8 3

ADAGC

ADIPO

ADLPFO

DATA

3 2

CK106

AUDATA

5 4 3 2 1

C106

0.22

7 3

ADIPI

22KO 22KI

WBO

TCGO AOUT BOUT EOUT FOUT

DVCC

24

3

6

3

5

4

3 3

3 3 2 3

1

CK108

3

0

CK107

2

9

TP133

2

8

TP132

7

2

TP131

6 2

TP130

2

5

TP100

VCCLASER

LDCNT2

LDCNT1

TP602

C622

0.1

FODRR FODRF TRDRF TRDRR

+B

L171 10µH

C171

EFMO

SPDRR

R106 56K

R102 22K

R101 22K

+B

100/6.3

+B

R600

56

C651 1

L604

4.7µH L603

4.7µH

L602

4.7µH

L601

4.7µH

TP139

C121 270P (CH)

C122 270P (CH)

C123 390P

C124 390P

TP187

R103 22K

F+

CK105

R104 22K

TT+

C601

L203

C209 22P(CH)

L201

L209

100mA

1

16

F-

1

C204

0.47

11

TP208

5 7

FEMON

TP209

TOTMON

7

6

TP210

CK201 CK202 CK203 CK204

CK205 CK206

R204 1K

C203

0.1

TEMON

7 7

SBCK

7

8

SBO

7

9

SBSY

8

0

SFSY

1

8

FOK

2

8

SENSE

3

8

COUT

4

8

MCCK

5

8

DINTX

8

6

VDD1

8

7

DGND

8

RSTX

9

8

SYSD0

9 0

SYSD1

1

9

SYSD2

2

9

SYSD3

9

3

SYSD4

9

4

SYSD5

9

5

SYSD6

9

6

7

SYSD7

9

SYWRX

9 8

SYRDX

9

1

00

SYRS

EFMMON

1

TP201

9

VCCRF

R422 100K

10

17

4

FOK SENSE CIN

3

DINT

XRT SYD0 SYD1 SYD2 SYD3 SYD4 SYD5 SYD6 SYD7 SYWR SYRD SYRS

+B

T+T-F-

F+

L600

TP610

2.2µH

VCCPWM

C605

0.1 C600

22/6.3

C603

1

C604

1

C602

1

TP202

100mA

L204

100mA

R207

680

1

9

3

8

2

4

7

7 0

7

6

VDD3

DGND

LRCK

BCLK

DFCK

ADDATA

DADATA

DECODE/SERVO

BIN

EIN

AIN

AGND

TCG

AVCC

EFMI

7

5

8

4 3 2

6

C207

0.1

SYD7

RCAULT MCPGIN INPGIN INPGCK RCPCNT

TP416

DSPRST PBAULT LDON OPICGA

RFLAT

ELON

100mA

C211

5P(CH)

L202

100mA

R222

1M

TP204

XL201

CK207

33.868MHz

4

5

3

6

7

6

X1I

X1O

DIN

DGND

DOUT

IC201

ENCODE/

ATRAC

LR37811

FIN

VDD1

DGND

WBI

VBAT

0

1

3

2

9

1

TP206

C205

0.1

R206 270K

C100

R205 330K

+B

SYD3

SYD4

SYD5

SYD6

6 2 7

2 2

8

2

9

3

0

3

1 3 2 3

3

4

3 3

5 3

6

7

3 3

8

TP417

3

9

4

0

1

4

2

4

3

4 4 4 4

5

6

4

7

4

8

4

9

4

0

5

PLVGIN

AUSCLK

AUDATA

+B

C212

5P(CH)

1

2

6

VPD

VDD1

TEST0

TEST1

5

4

1

L100 10µH

10/6.3

SYD2

5 2

SYD2 SYD3

SYD4 SYD5 SYD6 SYD7 VSS RCLAT _MCPGI _INPGI INPGCK RCPCNT TEST1 TEST0 JPNP VCC

_LCDRST PBLAT LDON OPICGA RFLAT RACLK RADAT VSS

_ELON

1 5

0 6

VXI

TEST2

6

1

SYD1

2 4

SYD1

2 5

HREC

SW402 HOLD

L205

5 9

ADPON

X176KO

7

1

TP207

X176KO

SYD0

3 2

SYD0

_REC

PBOPON 3 5

PBMUTE

100mA

L206

100mA

8

7

5

DAPON

OPTCNT

FODRF

FODRR

9

8

1

FODRR

FODRF

SYWR

SYRD

2

1 2

2

_SYRD

_SYWR

_DCEXT

_KHOLD

4

5 5

5

TP412

TP404

EFMO

TP212

LDCNT1

LDCNT2

4

6

1

3

5

2

5

X700KO

EFMO

0

5

CK224

PLCK

9

4

EMPH1

LDCNT1

LDCNT2

TP203

ACRCER

8

4

CK222

TCRS

7

4

RAD0

6

4

RAD1

4

5

RAWEX

4 4

RARASX

3

4

RAA9

2

4

RAD3

41 40

RAD2

RACASX

3

9

DGND

3

8

RAOEX

7

3

RAA8

3

6

RAA7

3

5

RAA6

4

3

RAA5

3

RAA4

3 2

VDD2

3

1

RAA10

3

0

RAA0

2

9

RAA1

2

8

RAA2

7

2

RAA3

6 2

SPDRR

SPDRF

SLDRR

SLDRF

TRDRR

TRDRF

3 2

5

2

0

1

2 4

2

VCCENDEC

C201

1

SPDRR

SPDRF

SLDRR

SLDRF

TRDRR

TRDRF

TP413

PCNT1

SYRS

0

9

8

2

1

VSS

SYRS

PCNT1

MICROCOMPUTER

IX0298AWZZ

MD1

MD0

BUZOUT

8

6

7

5

BEEP

R408

R407

10K

100K

R413

1K R414 1K

R415 1K

TP409

5

6

7

4

1

EEPD

EEPK

_EPCS

PLVON

IC401

SYSTEM

MD2

WDTOVF

INNSW

_RESET

0

1

2

5 9

6

INNSW

TP403

C431

0.47

TP408

DSPSCK

3 1

DSPSCK

_NMI

3 6

TP400

XL401

4.19MHz

D431 1SS361

R431 330K

R412 10K

SCKO

_STBY

2 1

4 6

R411 100K

TP407

12

+B

C200 1

IC402

EEPROM S

CS VCC

1

SK

2

DO

3 4

DI

DSPDAT

DSPSTB

0

1

9

1

P32

DSPDAT

DSPSTB

EXTAL

XTAL

VCC 5

6

7

6

IC431 SESET S80820LN

OUT

1

VDD

R461

100K

TP205

2.0V REG 62FP2

1 2

IC402

NC

PRTCT

GND

PDCNT

7

8

6

VSS

RMDAT

PDCNT

VSS

_STOP

_PLAY

9

8

7 0

6

HSTOP

HPLAY

VSS

4 3 2

R463

100K

IC20

3

5 6

TP

7

TP

8

DISCPR

5

4

SPWDS

DISCPR

EMPH0 1

2

7

EMPH0

C454

0.0022

CHGON

_DINT 7

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 23.

• The numbers 1 to 18 are waveform numbers shown in page 34.

1

23456

Figure 26 SCHEMATIC DIAGRAM (1/3)

– 26 –

MD-MT20H/16E

R500

C773

0

Q R

O

H

2

0

C600

2

E

P

P27 P28

P26

DADATA

0 9 8 7 6

5 4 3

2

1

IC820

62FP2502

1 2

PCNT2

DINT

ADDATA DFCK BCLK LRCK DIN ADPON DAPON OPTCNT

EMPH1

3

DCNT1

RCPCNT

BATINCK

BATON

PCNT2

HREC HSTOP HPLAY

HKEY2 HKEY1

R451

5.6K

R452

8.2K

R453 18K

+B

DSPDAT DSPSCK DSPSTB DSPRST

CN701

TP761

TP763 TP764 TP765

TP767 TP768 TP769 TP770

VCC4.5

EMPH0 RESET PBMUTE BEEP RCAULT AUSCLK AUDATA PBAULT INPGCK INPGIN MCPGIN

RKEY

RPLAY

ELON

PCNT1

+B

C866 1

TP771

TP774 TP775

TP777

TP779 TP780

TP782 TP783

TP785 TP786 TP787 TP788 TP789 TP790 TP791 TP792 TP793

R810 180K

VCC2.7 VCCVG

1

IC702

2

IC702

4.5V REGULATOR 62GR4522

+B

+B +B

RDATA

R803 100K

+B

R457

R456

R455

18K

8.2K

5.6K

C481 1

C482 1

(243)

FLAT CABLE

33 33

3

1

32

2

3

4

2

5

2

6

2

7 8

2

9

24

1

0 1

1

2

1

3

2

1

2

4

1

5

1

6

1

1 1

1

7

6

1

8 9

1

2

4

1

0

3

2

1

2

1

3 2

1

2 4

1

2

5

9

6 2

8

7

2

7

2

8

6

2

9

5

3

0

4

3

1

3

32

2

3

1

Q461 2SC4738 GR

R465 100K

L862 100µH

D861

C865

1

EP10LA03

C869

47/6.3

VCC2.7X

IC808

PLVDCI

PLVDRY

1 2

IC808 CHARGING CIRCUIT HN1C01FU

PCNT1

C810

0.33

5

C877

1

4 3

C832

0.1

L203

9 (CH)

L209

L201

100mA

1

11

TP208

5 7

FEMON

209

TOTMON

7

6

210

TEMON

7 7

SBCK

7

8

201

SBO

7

9

202

SBSY

8

0

203

SFSY

1

8

204

FOK

2

8

SENSE

3

8

205

COUT

4

8

206

MCCK

5

8

DINTX

8

6

203

VDD1

8

7

.1

DGND

8

RSTX

9

8

204

SYSD0

9 0

K

SYSD1

1

9

SYSD2

2

9

SYSD3

9

3

SYSD4

9

4

SYSD5

9

5

SYSD6

9

6 7

SYSD7

9

SYWRX

9 8

SYRDX

9

1

00

SYRS

EFMMON

1

TP201

9

VCCRF

R422 100K

L600

0

2.2µH

22/6.3

TP202

100mA

L204

100mA

R207

680

1

9

3

8

2

4

7

7 0

7

6

VDD3

DGND

LRCK

BCLK

DFCK

ADDATA

DADATA

DECODE/SERVO

AVCC

EFMI

BIN

EIN

AIN

AGND

TCG

7

5

8

4 3 2

6

C207

0.1

SYD7

RCAULT MCPGIN INPGIN INPGCK RCPCNT

TP416

DSPRST PBAULT LDON OPICGA

RFLAT

ELON

100mA

C211

5P(CH)

L202

100mA

R222

1M

TP204

XL201

CK207

33.868MHz

4

5

3

6

7

6

X1I

X1O

DIN

DGND

DOUT

IC201

ENCODE/

ATRAC

LR37811

VDD1

DGND

WBI

VBAT

FIN

0

1

3

2

9

1

TP206

R206 270K

C100

R205 330K

+B

SYD3

SYD4

SYD5

SYD6

6 2 7

2

8

2

9

3

0

3

1 3 2 3

3

4

3

5 3

6

7

3 3

8

TP417

3

9

4

0

1

4

2

4

3

4 4 4 4

5

6

4

7

4

8

4

9

4

0

5

PLVGIN

AUDATA

AUSCLK

C212

1

2

6

VPD

VDD1

TEST0

TEST1

5

4

1

C205

0.1

L100 10µH

10/6.3

SYD2

5 2

SYD2 SYD3

SYD4 SYD5 SYD6 SYD7 VSS RCLAT _MCPGI _INPGI INPGCK RCPCNT TEST1 TEST0 JPNP VCC

_LCDRST PBLAT LDON OPICGA RFLAT RACLK RADAT VSS

_ELON

1 5

L205

5P(CH)

0

5 9

6 VXI

ADPON

X176KO

TEST2

6

1

TP207

X176KO

SYD0

SYD1

3 2

2 4

SYD1

SYD0

_REC

3

2

5

HREC

PBMUTE

SW402 HOLD

100mA

8 5

DAPON

FODRF

8

7

1

FODRF

SYWR

2 2

_SYWR

_DCEXT

PBOPON

4 5

TP412

L206

7 5

OPTCNT

FODRR

9

1

FODRR

SYRD

1 2

_SYRD

_KHOLD 5

5

100mA

TP212

LDCNT1

LDCNT2

4

6

1

3

5

2

5

X700KO

EFMO

0

5

CK224

PLCK

9

4

EMPH1

LDCNT1

LDCNT2

TP203

ACRCER

8

4

CK222

TCRS

7

4

RAD0

6

4

RAD1

4

5

RAWEX

4 4

RARASX

3

4

RAA9

2

4

RAD3

41 40

RAD2

RACASX

3

9

DGND

3

8

RAOEX

7

3

RAA8

3

6

RAA7

3

5

RAA6

4

3

RAA5

3

RAA4

3 2

VDD2

3

1

RAA10

3

0

RAA0

2

9

RAA1

2

8

RAA2

7

2

RAA3

6 2

SPDRR

SPDRF

SLDRR

SLDRF

TRDRR

TRDRF

3 2

5

2

0

1

2 4

2

VCCENDEC

C201

1

SPDRR

SPDRF

SLDRR

SLDRF

TRDRR

TRDRF

TP413

PCNT1

SYRS

0

9

8

2

1

VSS

SYRS

PCNT1

MICROCOMPUTER

IX0298AWZZ

MD1

MD0

BUZOUT

8

6

7

5

TP404

BEEP

R408

R407

10K

100K

R413

1K R414 1K

R415 1K

5

6

7

1

EEPK

EEPD

PLVON

IC401

SYSTEM

MD2

WDTOVF

INNSW

0

1

5 9

6

INNSW

TP403

C431

0.47

12

+B

IC402

EEPROM S29L294A

R411 100K

TP407

1

TP408

2

R412

3

10K

4

TP409

DSPSTB

DSPSCK

0

1

3

4

2

1

P32

_EPCS

DSPSCK

DSPSTB

SCKO

XTAL

VCC

_STBY

_NMI

_RESET

4

5

3

6

2

6

TP400

XL401

4.19MHz

IC431

D431

SESET

1SS361

S80820LN

1

R431 330K

R461

100K

EFMO

TP205

IC200

2.0V REGULATOR 62FP2002

C200 1

1

3

2

IC402

CS VCC

5

SK

NC

6

TP411

DO

7

PRTCT

TP410

8

GND

DI

DSPDAT

PDCNT

DISCPR

7

5

9

8

4 3 2

6

VSS

CHGON

RMDAT

PDCNT

DSPDAT

SPWDS

DISCPR

DCNT1M NIHEXT

BAT0FF

CHGCNT

PLVDCI PLVBAT

VSS

EXTAL

_STOP

_PLAY

_DINT

EMPH0

1

9

7

8

2

7

7 0

7

6

HSTOP

HPLAY

EMPH0

VSS

OUT

4

VDD

3 2

R463

100K

C454

0.0022

CIN

SPIN

1

CIN HDON

SPIN

PCNT2

VDD

_EJSW

CKSTP

_XRST

_FOK

SENSE

MCMON

VSS

AVSS

LDVAR

HKEY2 HKEY1

RKEY TEMP

Vref AVCC

_ARQD

_ARQK

_RPLAY

5

3

4

7

R426

22K

RPLAY

OPEN

R464

100K

1

0 0

9

9 9 8 9

7 9

6 9

5 9

4 9

3

2

9

1

9 9 0

9

8 8

7 8

6

5

8

4

8

3

8

2

8

1

8 8

0 7

9 7

8 7 7 7

6

D461

RB731U

2 1

VCCDRAM

+B

TP418

TP402

R462

100K

RESET

1

I/O1

2

I/O2

3

WE

4

RAS A9

5

6

A0

7

A1

8

A2

9

A3

1

0

VCC A4

TP200

R202

33

HDON

TP414

R405 10K

TP401

R425

4 3 5 6

R466

R406 100K

RKEY

C202 47/6.3

VCC2.5

XRT FOK SENSE

22K

R423

560K

TP415

IC202

C401

0.1

HKEY2 HKEY1

PLVDCI PLVDRY

22K

2

GND

1

I/O4

1

I/O3

CAS

1 1

OE

A8

1

IX2567AF

1

A7

4MBIT D-RAM

A6

1

A5

1 1

2.5V REGULATOR

C820 1

TP406

TP405

BATINCK

BATON

LDVAR

TEMP

R424

22K

+B

7

8 9 10 11 12

Figure 27 SCHEMATIC DIAGRAM (2/3)

– 27 –

CN702

3 1

0 9 8 7 6 2 5

3 2 2 1 0 9 8

5

1 0

C863 1

6

5

4 3

D831

TP070

TP064

R279 100

R811

1SS372

180K

TP077 TP076

R833 47

TP061

R467

C834

0.1

R460

R458 56K

68K

18K

TP811

TP093 TP092 TP091 TP090 TP089 TP088 TP087 TP086 TP085 TP084 TP083 TP082

TP075 TP074 TP073 TP072 TP071

TP070B

TP069 TP068 TP067 TP066

TP065

TP064B

TP063 TP062

C831

0.1

R277

TP481 TP482 TP483

TP486 TP487 TP488 TP489

RESET PBMUTE BEEP RCAULT AUSCLK AUDATA PBAULT INPGCK INPGIN MCPGIN

RPLAY RDATA

ELON

39K

TP451 TP452 TP453 TP454 TP455 TP456 TP457 TP458 TP459 TP460 TP461 TP462 TP463

CN451

CN482

TP080 TP079 TP078

EMPH0

RKEY

C830

R823 100K

R832

1000P

10M

C825

1 2 3 4 5 6 7 8

9 1 1

2

1 1

1 2 3 4 5 6 7 8 9

R821

4P(CH)

C821

0 1

3

R826 10K

R828 220K

220/4

100K

TP088B TP087B TP086B

R851 10K

R829

C822 56P(CH)

R827

C827

+B

+B +B

33K

D821

300K

EC30LA02

22/6.3

C851 150P (CH)

1 2 3 4 5 6

EDIT

1

DISPLY

2

SKIP DOWN

3

SKIP UP

4

REC

5

P-MODE

6

STOP

7

VOL DOWN

8

PLAY

9

BASS

1

0

VOL UP

1

ENTER

2

1

GND

3

1

1 2 3 4 5 6 7 8 9

C505

1000P

C506

1000P

SDTO

DGND

15

C507

10/6.3

IC802: IC802 OVER VOLTAG CONNECTION CIRCUIT

IC851

2.35V REGULAT TC7S14FU

1 2

GND

OSCIN

VREF

IC821

OSCOUT

DB

EAIN+

ROSC

STATE

EAIN-

PWM

EAOUT

C826 1

G

L822

10µH

IC822 CPH3403

3

1

6

1

2

1

SCLK

VD

3

4

1

EMPH0

VCC

R852 47K

OSC

VCC

OUTGND

L821

4.7µ

D

S

0

1

LRCK

SDTI

5

1

5 4 3

1

1 1

9 8 7

C829

MD-MT20H/16E

A

E

PCNT1

A

B

C

D

E

F

G

H

P26

P27

R455

5.6K

R453

R452

18K

8.2K

C481 1

SPDAT SPSCK SPSTB SPRST

CN701

33 33

TP761

1 2

TP763

3

TP764

4

TP765

5 6

TP767

7

TP768

8

TP769

9

TP770

1

0

TP771

1

2

1

3

1

4

1

TP774

5

1

TP775

6

1 1

7

TP777

1

8

TP779

PH0

9

1

TP780

SET

2

0

MUTE

2

1

TP782

EP

2

TP783

AULT

3 2

SCLK

2 4

TP785

DATA

2

5

TP786

ULT

6 2

TP787

GCK

7

2

TP788

GIN

2

8

TP789

PGIN

2

9

TP790

Y

3

0

TP791

Y

3

1

TP792

32

TP793

N

3

1

Q461 2SC4738 GR

R465 100K

L862 100µH

C865

C869

47/6.3

VCC2.7X

PLVDCI

PLVDRY

IC808 CHARGING CIRCUIT HN1C01FU

PCNT1

R810 180K

VCC2.7 VCCVG

1

5

IC702

2

4 3

66

IC702

4.5V REGULATOR 62GR4522

R456

8.2K

C482 1

FLAT CABLE

1

IC808

1 2

C810

C877

R457 18K

(243)

3

32

3

1

3

0

2

9

2

8 7

2

6 2

2

5

24

3 2 2

2 2

1

2

0 9

1 1

8

1

7 6

1

5

1

4

1

3

1

2

1

1 1

0 9 8

7

6

5 4 3 2 1

C863 1

D861 EP10LA03

0.33

1

C832

0.1

P28

CN702

TP070

TP064

R279 100

6 5 4 3

R811

180K

D831

1SS372

TP077 TP076

TP061

R833 47

R467

C834

0.1

R460

R458 56K

68K

18K

TP093 TP092 TP091 TP090 TP089 TP088 TP087 TP086 TP085 TP084 TP083 TP082

TP075 TP074 TP073 TP072 TP071

TP070B

TP069 TP068 TP067 TP066 TP065 TP064B

TP063

TP062

R277

TP811

C831

0.1

• NOTES ON SCHEMATIC DIAGRAM can be found on page 23.

• The numbers 1 to 18 are waveform numbers shown in page 34.

LCD ASS'Y

LCD

DRIVER

LCD

TP481 TP482 TP483

TP486 TP487 TP488 TP489

TP451 TP452 TP453 TP454 TP455 TP456 TP457 TP458 TP459 TP460 TP461 TP462 TP463

CN451

CN482

EDIT

1

DISPLY

2

SKIP DOWN

3

SKIP UP

4

REC

5

P-MODE

6

STOP

7

VOL DOWN

8

PLAY

9

BASS

1

0

1

0

VOL UP

1

ENTER

2

1

2

1

GND

3

1

3

1

2

3

4

5

6

7

8

9

KEY SWITCH FLEXIBLE PWB ASS'Y

6 7 8

SW403

1

2 3

4

C715

0.1

C713 1

R713 10K

C712 100P

L703

(CH)

100mA

C711

R714 10K

RIPPLE FILTER

R727

R723

8.2K

6.8K

0.22

L-ch R-ch

C720

1000P

C452 1000P

L456 100mA

C491

L452 100mA

0.1

L454 100mA

L451 150mA

RDATA

15AZ7.5Y

C723 1000P

AUDIO PWB-A2

SW801 Ni-MH BATTERY DETECTION

BATTERY TERMINAL

100P

(CH)

R726 39K

R724

6.8K

L713 100mA

C724 1000P

C776 1000P

L453 100mA

TP721B

DISC LID OPEN

2 3

L702 100mA

L704 100mA

Q721

2SC4213 B

L714 100mA

L712 100mA

L711 100mA

TP729

C726

TP728

R725 100

TP726 TP725

TP724 TP723

TP727

1

4

TP722

TP721

TP707 TP709 TP708 TP701 TP702 TP703 TP704

TP705

3.3/10

TP714

TP713 TP712 TP711

C725

J701 OPTICAL/ LINE IN

7

VCC

9

Vout

8

GND

6 1

L

2

R

3

GND

4 5

3.3/10

J702 MICIN

4 2 3 1

J703

REMOTE CONTROL/

HEADPHONES

6 5 2 4 3 1 7 8

SW401 EJECT

R501

C509

470

C501

0.0022/50

47µH

47/6.3

SB10015C

2 1

C502

0.0022/50

TP800

R260

C254

C875

R502 470

RESET

3.3M

R257 100K

0.1

C759

PBMUTE

6

1

Q253 RN1113

3

R261 270K

TP809

R268

2.2K

R756

0.027

C801

R259 82K

5

2

R262 24K

R270

27K

1

2.2

R757

BEEP

0.1

100

D871 EP10LA03

TP088B TP087B TP086B

C504

0

1

2

GND

G

1000P

C507

10/6.3

OSCIN

OSCOUT

PWM

3

STATE

1

SDTO

DGND

3

1

VCC

R852 47K

OSC

ROSC

VCC

OUTGND

L821

4.7µH

SCLK

VD

D

S

1

4

1

EMPH0

1

LRCK

SDTI

5

1

C773

5 4 3

2

1

1 1

0 9 8 7

C829

2

Q874 RN1113

9

MCLK

IC501

CMODE

6

1

R500

0.22

C823 390P

R824 15K

VCC13

0.01

8

PWDA

PWAD

DEM0

DEM1

7

1

4.7

R853 100

C852 1

D822 1SS389

MICOM2.35V

VCCPOWER

7

5

4 3 2

6

VCML

VCMR

AINR

AINL

AOUTL

AOUTR

AGND

VCOM

2

0

1

9

8

1

2

2.2

C762

C508

C761

2.2

1

1 2

2.5V REGULATOR 62 GR2522

C824 560P

C828

1

R831 100K

C505

C506

TP080 TP079 TP078

EMPH0 RESET PBMUTE BEEP RCAULT AUSCLK AUDATA PBAULT INPGCK INPGIN MCPGIN

RKEY

RPLAY

RDATA

ELON

R821

100K

C830

1000P

39K

R826 10K

R823 100K

R828 220K

C825

4P(CH)

R832

10M

C821

220/4

1000P

15

+B

+B +B

IC802: IC802 OVER VOLTAGE REVERSE CONNECTION PROTECTION CIRCUIT

IC851

2.35V REGULATOR

C851

TC7S14FU

150P

R851

(CH)

1

10K

2

1

VREF

IC821

DB

R829

33K

2 3

EAIN+ EAIN-

C822

4

56P(CH)

EAOUT

5 6

C826

D821

R827

300K

1

EC30LA02

L822

10µH

IC822

C827

22/6.3

CPH3403

1

VRAD

VRDA

VB

VA

3 2

24

TP500

C500 10/6.3

5

C774 1

4 3

IC771

L771 100µH

C806

3.3

IC821 DC/DC CONVERTER IR3M09N

FET IC Q873 NDS332P

S

G

C841 10/6.3

3.3/10

IC501 AD/DA

C503

3.3/10

CONVERTER AK4519VF

C511

1

L500

C771

VCC2

D801

C805

100/6.3

D

R878

100K

IC841

2.35V REGULATOR XC62HS02

4 3 5

C510

R719

2.2

0

1

2

9

ROUT

LOUT

RIHP

LIHP

1

5

3

6

4

1

R702

100

27K

C757

1

2

1

ROUT

RIHP

C760

0.027

4

3

1

C754

1

C719 10/10

RCAULT

PBAULT

AUDATA

AUSCLK

L719

0.47uH

R815

D802

56K

015Z5.1Y

R816 24K

R800

22K

4 3

IC802 FDC634P

D812

S

SB10015C

D

IC803

G

2

FDT439N CHARGING CIRCUIT

TP808 Q252 2SC4738GR

R256

18K

R258

180K

C258

0.0047

C253

0.1 R255

0.2M

7

5

8

6

+ - O

V+ O - +

V4 3 2

1

0.1

C256

R274 75K

R267 75K

R265

R269

22K

100

R264

18K R275 56K

1

VCC12

2

IC871 S8324A28

C874

15/10

2.8V UP CONVERTER

LOUT

5 1

8.2K

8

VEE

DGND

7

1

0 1

R801

C255

0.1

R271 1K

VCC11

R720

8.2K

C702

R754 270K

0.68

R266

L871 47µH

AGND

2.2K

3

IC805

R712

5.6K

7

6

RI LI

9

8

1

C701

10/6.3

C756

9

8

LIHP

VEE

DGND

6

7

1

C753

1

R807

680

R802 1K

Q254 RN1113

1

R254

2.2K

NJM022V

2

100K

3

5 4 3

C734

0.1

5

VCC

0

2

R703

120K

10/6.3

R701

R762

4.3K

R761

4.3K

C758

0.68

7

AGND

RI

8 1

R753

L752 22uH

VCC1 C800

1

R808

5.6K IC801

1 2

1

D803 1SS382 REVERSE CONNECTION

2

1 2

R263 100K

Q251 RN1113

1

R711

5.6K C733

0.1

4 3 2

1

IC701 AUDIO

3 2

2

1

2

24

AMP. IR3R54N

C703

0.01

100

R770

15K

R769

15K

3.3/10

5

4 3 2

6

LI

VCC

2

1

0

9

2

1

2

120K

L751 22uH

C766

0.22

R768

1K

R764

68

R806

1K

D800 1SS360

6 5 4 3

4 3 2

VCC3

R273

56K

C250

0.1

D S S

6

D D

5

G

4 3

IC806 NDC631N

IC805,IC806,IC807

R276

CHARGING CIRCUIT

3.3K

Q255 RN1113

2

3

1

F871 T0.5A L 63V

1

R871

10K

C876

1

C871

0.47

2.8V UP CONVERTER

1

3 2

2 4

C755

0.01

R767

1K

R763

L888 TIP IMPEDER

TP805

R809

2.2K

IC801

HN1C01FU

R804

1.0A

R278

2.2K

R252

150K

R253

75K

GND1

R250

1

1 2

!

OUT

VSS

VDD

IC872 S80813LN

R710 56

IC703

AUDIO AMP.

R765 18

R766

C765

0.22

18

68

TP801

TP802

L887

R251

1

IC807 RN4904

4 3 2

Q711 RN1444 A

INPGCK

INPGIN

+B

MCPGIN

R729

2.7K

R730

2.7K

IR3R54N

L-ch

R-ch

C752

0.082

DC JACK 1 2 3

TIP IMPEDER

VCC4 TP803

TP804

6 5 4 3

R717 1K

3

L-ch R-ch

R715 100K

R716 100K

R728 1K

C721

3.3/10

C722

3.3/10

D494 15AZ7.5Y

KEY

PLAY

C751

0.082

RKEY

RPLAY

SW801

1

C714

C735 1000P

R492

J801 DC IN

2

1

C731

1K

D492

1

23456

Figure 28 SCHEMATIC DIAGRAM (3/3)

– 28 –

MD-MT20H/16E

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

P30 5-H

CN601

TO MAIN PWB

P30 3-C

CN482

LCD Ass'y (214)

KEY SWITCH FLEXIBLE PWB Ass'y (213)

TO MAIN PWB

P30 2-C

CN451

CN101

TO MAIN PWB

P30 4-H

A

B

C

D

E

F

G

H

1

23456

Figure 29 WIRING OF P.W.BOARD (1/5)

– 29 –

MD-MT20H/16E

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

5

8

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

2345

6

7

89

10

20 191817

16

151413 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

P29 2-E

To LCD Ass'y

P29 5-E

Terminal, Battery

(237) /

13 1

9

1

54

1

3

1

22

1

16

Terminal, Battery

(233)

Terminal, Battery

(235)

1

TO AUDIO PWB

CN702

P32 3-A

MAIN PWB-A1 (BOTTOM VIEW)

FLAT CABLE (243)

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

P29 1-D

To Mechanism Flexible PWB

P29 6-D

A

B

C

D

E

F

G

: Through-hole where the top, bottom and +B patterns are connected. : Through-hole where the top, bottom and hround patterns are connected.

H

: Through-hole where the top and bottom patterns are connected.

• The numbers 1 to 18 are waveform numbers shown in page 34.

1

23456

Figure 30 WIRING OF P.W.BOARD (2/5)

– 30 –

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

8

5

1

4

1

2

3

12

5

4

5

3

2

1

3

1

56

10

G

S

D

3

2

1

3

2

1

445

5

4

5

6

1

2

3 4

S

G

D

3

1

2

1

5

10

15

20

25

26

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

3

4

MD-MT20H/16E

8 9 10 11 12

Figure 31 WIRING OF P.W.BOARD (3/5)

– 31 –

7

MD-MT20H/16E

AUDIO PWB-A2 (TOP VIEW)

A

FLAT CABLE (243)

TO MAIN PWB

CN701

P30 2-B

33

1

L752

L751

CN702

B

R754

C759 C760

C711

C722

C755

R730

R723

C752

9

8

7

2

1520

C753

C491

L702

C721

C754

C720

R724

1

L453

L454

C751

C712

3

2

R729

L713

L712

C724

R756

R757

R710

24

15 13

C758

2530

R753

20

C719

R717

C715

Q711

33

C766

R764

C765

R763

C

C771

L771

R762

D

C773

C774

4

IC771

5

E

L500

5

C500

C511

24

3 2

1

C762

R761

R769

R770

C761

C508

R767

R500

R768

R765

1

5

10

12

C756

C757

L719

1520

R766

IC703

C507

13

IC501

C505

R501 C501

C509

2

10

12

C506

Q721

R726

C726

C504

F

R502

C502

C503

1

C510

C723

5

3

R712

R720

R725

C725

R711

R719

3

G

4

1

4

C731

510

D494

L703

R703

C702

R727

L456

4

C703

1

R714

R728

R492

R702

C701

C714

L704

L714

R716

D492

6

5

J701 OPTICAL/ LINE IN

1

SW401 EJECT

8

7

6

SW403 DISC LID OPEN

: Through-hole where the top, bottom and +B patterns are connected. : Through-hole where the top, bottom and hround patterns are connected.

H

: Through-hole where the top and bottom patterns are connected.

• The numbers 1 to 18 are waveform numbers shown in page 34.

1

23456

Figure 32 WIRING OF P.W.BOARD (4/5)

– 32 –

7

8 9 10 11 12

C776

MD-MT20H/16E

AUDIO PWB-A2 (BOTTOM VIEW)

J703

REMOTE

CONTOL/

HEADPHONES

L452

TP721

TP721B

L451

1

TP705

2

TP729

R715

R713

TP701

R701

C713

TP728

8

7

5

6

TP727

TP722

3

TP725

TP726

TP062

TP061

TP704

C452

TP063

TP723

TP066

TP064

4

TP724

TP702

TP065

13

TP068

TP064B

TP703

15

20

TP069

TP067

IC701

TP077

TP070

TP071

TP080

TP072

10

5

TP070B

TP073

TP709

TP708

12

TP086

TP082

TP089

TP707

TP076

TP075

TP091

TP092

TP074

TP083

TP093

TP079

TP087

TP084

TP088B

TP085

TP090

TP088

TP500

J702

MIC

TP086B

TP711

1

L711

TP712

TP713

24

1

2

C733

C734

IN

TP714

3

C735

4

TP087B

TP078

Figure 33 WIRING OF P.W.BOARD (5/5)

– 33 –

MD-MT20H/16E

ENV

1994 / 12 / 16 01:03:40

=Filter= =Offset= =Record Length= Smoothiing : OFF BW : FULL

CH1 : 0.00V CH2 : 0.00V

Main : 10K

Zoom : 10K CH3 : 0.000V CH4 : 0.00V

=Trigger= Mode : NORMAL Type : EDGE CH2 Detay : 0.0ns Hold OFF : MINIMUM

T

TP201

(EFM)

TP210

(TEOUT)

TP209

(TOTAL)

Stopped

CH1=1V

DC 10:1

CH3=500mV

DC 10:1 (2ms/div)

2ms/div

CH2=2V

DC 10:1

T

1

2

9

10 11

1994 / 12 / 16 01:23:16

=Filter=

=Tracel= P-P 1.280V

=Offset= =Record Length= Smoothiing : OFF BW : FULL

CH1 : 0.000V CH2 : 0.00V

Main : 1K

Zoom : 1K CH3 : 0.00V CH4 : 0.00V

=Trigger= Mode : AUTO Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM

T

TP201 (EFM)

Stopped

CH1=2V

DC 10:1 (500ms/div)

500ms/div

1

MORM:200MS/s

9

1994 / 12 / 15 08:39:46

=Filter= =Offset= =Record Length= Smoothiing : OFF BW : FULL

CH1 : 0.00V CH2 : 0.00V

Main : 10K

Zoom : 10K CH3 : 0.00V CH4 : 0.0V

=Trigger= Mode : AUTO Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM

T

TP210

(TEOUT)

TP656

(SL+)

TP657

(SL-)

Stopped

CH1=2V

DC 10:1

CH3=2V

DC 10:1 (1s/div)

1s/div

CH2=2V

DC 10:1

1

3

2

NORM:1kS/s

10

14 15

Stopped

CH2=500mV

CH1=1mV

DC 10:1

TP208

1

(FEOUT)

1

TP122

2

(F+)

2

3

CK205

3

(SENSE)

CK204

T

4

(FOK)

4

=Filter= =Offset= =Record Length= Smoothiing : OFF BW : FULL

CH1 : 0.00V CH2 : 0.000V CH3 : 0.00V CH4 : 0.00V

T

CH3=5V

DC 10:1

Main : 10K Zoom : 10K

1994 / 12 / 15 22:54:19

CH4=2V

50ms/div

DC 10:1 (50ms/div)

NORM:200kS / s

=Trigger= Mode : NORMAL Type : EDGE CH4 Detay : 0.0ns Hold OFF : MINIMUM

WAVEFORMS OF MD CIRCUIT

CH2=2V

DC 10:1

CH1 : 0.00V CH2 : 0.00V CH3 : 0.00V CH4 : 0.00V

T

CH3=2V

DC 10:1

Main : 5K Zoom : 5K

1994 / 12 / 16 00:24:17

CH4=2V

50us/div

DC 10:1 (50us/div)

NORM:100MS / s

=Trigger= Mode : AUTO Type : EDGE CH3 Detay : 0.0ns Hold OFF : MINIMUM

Stopped

CH1=2V

DC 10:1

SDTi

5

1

SCLK

6

2

T

LRCK

7

3

MCLK

8

4

=Filter= =Offset= =Record Length= Smoothiing : OFF BW : FULL

10 11

16

CH2=2V

DC 10:1

T

1994 / 12 / 15 23:31:21

50ms/div

ENV

1

10 14

12

13

Stopped

CH1=2V

DC 10:1 (50ms/div)

T

SPDRR

1

TP601

2

(VM)

15

=Filter= =Offset= =Record Length=

Smoothiing : OFF

CH1 : 0.00V

BW : FULL

CH2 : 0.00V CH3 : 0.00V CH4 : 0.00V

Stopped

CH1=2V

CH2=2V

DC 10:1 (2ms/div)

TP201

9

(EFM)

2

T

TP210

(TEOUT)

1

TP209

(TOTAL)

DC 10:1

T

Main : 10K Zoom : 10K

CH3=500mV

DC 10:1

=Trigger= Mode : NORMAL Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM

1994 / 12 / 15 08:57:26

2ms/div

ENV

1 10 12

13

=Filter= =Offset= =Record Length=

Smoothiing : OFF

CH1 : 0.00V

BW : FULL

CH2 : 0.00V CH3 : 0.000V CH4 : 0.0V

Stopped

CH1=500mV

DC 10:1 (20us/div)

CH2=2V

DC 10:1

Main : 10K Zoom : 10K

=Trigger= Mode : NORMAL Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM

1994 / 12 / 15 09:10:03

20us/div

ENV

9

T

CK105

(HPFO)

10

Stopped

CH1=2V

DC 10:1

TP208

(FEOUT)

1

T

TP210

(TEOUT)

2

TP656

3

(SL+)

TP657

4

(SL-)

BandwidthONSmooth

FULL 20MHz

=Filter= =Offset= =Record Length=

Smoothiing : OFF

CH1 : 0.00V

BW : FULL

CH2 : 0.00V CH3 : 0.00V CH4 : 0.00V

Stopped

CH1=2V

DC 10:1

T

TP208

1

(FEOUT)

TP210

2

)

(TEOUT

3

SPDRR

TP601

4

(VM)

=Filter= =Offset= =Record Length=

TP201 (EFM)

TP210

(TEOUT)

Smoothiing : OFF BW : FULL

CH1 : 0.00V CH2 : 0.00V CH3 : 0.00V CH4 : 0.00V

Stopped

CH1=2V

DC 10:1

1

T

2

CH2=2V

DC 10:1

CH2=2V

DC 10:1

CH2=2V

DC 10:1

T

1994 / 12 / 18 09:26:46

CH4=2V

DC 10:1 (1s/div)

=Trigger= Mode : AUTO Type : EDGE CH2 Detay : 0.0ns Hold OFF : MINIMUM

1994 / 12 / 15 09:58:45

CH4=2V

DC 10:1 (1s/div)

=Trigger= Mode : AUTO Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM

1994 / 12 / 15 21:54:52

CH4=1V

500us/div

DC 10:1 (500us/div)

1s/div

ENV

1s/div

ENV

CH3=2V

DC 10:1

OFF

Main : 10K Zoom : 10K

CH3=2V

DC 10:1

Main : 10K Zoom : 10K

CH3=1V

DC 10:1

1

CK108

17

(WBO)

2

=Filter= =Offset= =Record Length= Smoothiing : OFF BW : FULL

CH1 : 0.000V CH2 : 0.00V CH3 : 0.000V CH4 : 0.0V

Main : 4K Zoom : 4K

=Trigger= Mode : NORMAL Type : EDGE CH1 Detay : 0.0ns Hold OFF : MINIMUM

For TP208, TP209, and TP210, use the specific LPF, and observe the waveform.

18

3

TP121

4

(T-)

=Filter= =Offset= =Record Length=

Smoothiing : OFF

CH1 : 0.00V

BW : FULL

CH2 : 0.00V CH3 : 0.00V CH4 : 0.00V

Main : 10K Zoom : 10K

=Trigger= Mode : NORMAL Type : EDGE CH2 Detay : 0.0ns Hold OFF : MINIMUM

When watching the EEM monitor (TP201) Set MSL from 00H to 80H with EEPROM control setting. After completion restore 00H.

Measurement

10K

TP

1000P

– 34 –

MD-MT20H/16E

TROUBLE SHOOTING

It is advisable to use the TEST mode (refer to Error Data Display Mode, P13) indicating the causes of troubles before starting repair. Causes of operation errors (up to 10 errors) are recorded as error codes. This information is useful for repair.

When does not function

When the CD section does not operate When the objective lens of the optical pickup is dirty,this section may not operate.Clean the objective lens,and check the playback operation.When this section does not operate even after the above step is taken,check the following items. Remove the cabinet and follow the troubleshooting instructions. "Track skipping and/or no TOC(Table Of Contents) may be caused by build up of dust other foreign matter on the laser pickup lens. Before attempting any adjustment make certain that the lens is clean. If not, clean it as mentioned below."

Turn the power off. Gently clean the lens with a lens cleaning tissue and a small amount of isopropyl alcohol. Do not touch the lens with the bare hand.

Is the power supply turned on when the remote control button or main unit button is pressed?

Yes

Does the display operate normally?

Yes

Is playback state set?

Yes

Is audio output normal?

Yes

Is recording/playback operation normal?

• Power is not turned on when the / button is pressed.

Is power turned on when the remote control button is pressed?

No

Perform the check stated in item "Power is not turned on when the PLAY button is pressed".

Perform the check stated in item "Abnormal display".

Perform the check stated in item "Playback state connot be set".

Perform the check stated in item "Audio playback circuit".

Perform the check stated in item "Recording/playback operation".

Is operation normal when the main body button is pressed?

No

Is the pin 55 of IC401 in H state? (TP404)

Yes

Does the pin 66 of IC401 oscillate? (TP400)

Yes

No

– 35 –

Check the periphery of remote controller and main unit headphone terminal (J703) and IC401.

Check the position of Hold switch.

Replace XL401.

MD-MT20H/16E

• Abnormal display

Is waveform output from CN482 pins 6 to 8? Are the pin 4 (VCC) and pin 5 (GND) normal?

Yes

Check for pattern breakage of flexible PWB, check for defects of display microcomputer (replace the display unit).

No

Is waveform output from IC401 pins 9,11,13?

Yes

Check between IC401 and CN482.

• Playback state cannot be set

When it has been ascertained that the address up to cluster address is normal in the TEST mode. Is initialization performed normally in case of high- reflection

disc playback?

No

Is the lead-in photointerrupter set to OFF when the optical pickup moves to the innermost periphery in NORMAL mode? (Is TP654 in H level?).

Yes

No

Does the playback time display advance?

Check IC201 and IC202 connection line.

Check the lead-in photointerrupter, mechanical flex PWB soldering and CN601 connection.

No

Check the periphery of IC401.

No

Ia an attempt to repeat repeatedly the TOC part performed on the low-reflection disc?

Yes

Position check in INNER mode

No

Replace the disc.

• Audio playback clrcult

Although the playback time display is acting., no sound is given during playback in the normal mode. Is audio wavefrom output from IC501 pins 19 and 20?

Yes

Is audio wavefrom output from IC703 pins 18 and 19.

Yes

Is audio wavefrom output from J703 pins 3 and 4.

Yes

Check headphones jack,and periphery of headphone.

No

Check IC201 pins 70 to 72, pin 74 and IC501 pins 9, 10, 11, 15

Check the pins 5 and 6 of IC703.

Check whether there is defective solder joint of audio signal line between IC703 and J703

– 36 –

• The spindle motor fails to run.Does the head move

MD-MT20H/16E

Does the waveform appear on the IC201 pins 24 and 25 after TEST mode AUTO2 completion and in this state?

Yes

Does waveform appear on the IC601 pin 13?

Yes

Does waveform appear on IC901 pins 1, 19 and 20?

Yes

Replace the spindle motor.

No

Check the IC201 periphery.

Replace. IC601

L608, IC201, IC901, CN601 and flex, etc. soldering check

• Recording/playback operation

Insert a low reflection disc, and ascertain audio output by normal playback, and then set TEST REC mode.

Does the head move down, failing to start record even when the continuous record mode is set after address?

No

Does the RF waveform of TP201 appear when playback is

No

Yes

Check voltage of pins 52 and 53 of IC201, pins 3, 4, 7, and 9 of IC651, pins 1 and 2 of CN601. Check whether disc is recordinhibited.

Does level of pins 86 of IC401 and pin 17 of IC101 change depending on record and playback?

Yes

Is RF pattern output from IC201 pin 50?

Yes

Check whether there is any damage in IC101, periphery of laser diode.

Check for defects of IC351 in head drive flexible PWB,head, flexible PWB.

Is audio monitor output given in normal mode LINE IN record?

No

Is waveform obtained on IC501 pins 3 and 6?

No

Is audio waveform observed on the pins 18 and 19 of IC703?

Yes

No

Yes

No

Check periphery of IC401 and IC101.

Check for soldering failure of IC201 .

Check waveforms of pins 9 to 12 of IC501, pins 70 to 73 of IC201.

Check whether the pin 7 of IC501 and the pin 59 of IC201 are in H state.

Does voltage on the IC701 pins 13 to 15 change in case of record VOLUME UP/DOWN?

Check whether input waveform is observed on the pins 5 and 6 of IC703.

– 37 –

MD-MT20H/16E

FUNCTION TABLE OF IC

IC401 RH-iX0298AWZZ: System Microcomputer (IX0298AW) (1/3)

Pin No.

1 P12/TCLKA CIN Input Track cross signal/focus drive detection 2 TCLKB SPIN Input Spindle motor FG pulse detection input 3 P14 CHGON Output Ni-MH battery charge ON output 4 P15 DISCPR Input Disc record inhibition switch input 5 TIOCA2 SPWDS Input Spindle motor FG pulse width detection 6 P17 PDCNT Output Inner detection PD current control output 7 Vss VSS — Ground potential 8 TxD0 RMDAT Output Remote control indication data output 9 TxD1 DSPDAT Output Unit indication data output 10 P32 P32 Output Spare [connected to _RPLAY (pin 75)] 11 P33 DSPSTB Output Main unit's display strobe output 12* SCK0 SCK0 Output Serial I/O clock output (not used) 13 SCK1 DSPSCK Output Unit indication data clock output 14 PE0 _EPCS Output EEPROM chip selection output 15 PE1 EEPD Input/Output EEPROM serial data input/output 16 PE2 EEPK Output EEPROM serial clock output 17 PE3 PLVON Output Battery voltage measurement ON output 18 Vss VSS — Ground potential 19 PE4 PCNT1 Outout Vref supply control output of power IC 20 PE5 SYRS Output System LSI register selection output 21 PE6 _SYRD Output System LSI read enable output 22 PE7 _SYWR Output System LSI write enable output 23-30 PD0-PD7 SYD0-SYD7 Input/Output System LSI parallel data bus 31 Vss VSS — Ground potential 32 PC0 PCLAT Output Record audio IC data latch output 33 PC1 _MCPGI Input Microphone plug insertion detection input 34 PC2 _INPGI Input Line/digital plug insertion detection 35 PC3 INPGCK Input Line/digital plug type detection 36 PC4 RCPCNT Input/Output Record circuit power control output 37 PC5 TEST1 Input Test mode setting input 1 38 PC6 TEST0 Input Test mode setting input 0 39 PC7 JPNP Input Kana conversion/Kana input existence/nonexistence discrimination 40 Vcc VCC — Positive power supply 41* PB0 PBO Output Spare 0 42 PB1 _LCDRST Output LCD driver reset output 43 PB2 PBLAT Output Audio IC data latch output 44 PB3 LDON Output P.U. laser ON/OFF control output 45 PB4 OPICGA Output P.U. detection sensitivity selection output 46 PB5 RFLAT Output RF amplifier IC data latch output 47 PB6 RACLK Output RF/Audio IC data clock output 48 PB7 RADAT Output RF/Audio IC serial data output 49 Vss VSS — Ground potential 50 PA0 _ELON Output EL light control output 51 PA1 PLVGIN Output Battery voltage detection gain select output 52 PA2 _REC Input Unit REC button operation detection input 53 PA3 PBOPON Output Audio IC output stage control output 54 P20 _DCEXT Input DC-IN detection input 55 P21 _KHOLD Input Unit key hold switch input 56 TIOCC3 BUZOUT Output Beep sound pulse output 57 MD0 MD0 Input Operation mode selection input 0

Input/Output

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

FunctionPort Name Terminal Name

– 38 –

MD-MT20H/16E

IC401 RH-iX0298AWZZ: System Microcomputer (IX0298AW) (2/3)

Pin No.

58 MD1 MD1 Input Operation mode selection input 1 59 P23 INNSW Input Mechanism inner SW position detection input 60 WDTOVF WDTOVF Output Watch dog timer (not used) 61 MD2 MD2 Input Operation mode selection input 2 62 RES _RESET Input Microcomputer hard reset input 63 NMI _NMI Input Nonmaskable interruption (not used) 64 STBY _STBY Input Microcomputer standby input (not used) 65 Vcc VCC — Positive power supply 66 XTAL XTAL — Crystal connection terminal 67 EXTAL EXTAL — Crystal connection terminal 68 Vss VSS — Ground potential 69 PF7 _STOP Input Unit STOP button operation detection input 70 PF6 _PLAY Input Unit PLAY button operation detection input 71 PF5 EMPH0 Output Audio emphasis control output 0 72* PF4 PF4 Output Spare 73 PF3 _DINT Input System LSI interruption 74 PF2 _ARQD Input Disk cap opens and closes detection/it is started and required 75 PF1 _RPLAY Input Remote control PLAY key operation detection 76 IRQ0 _ARQK Input It is started by the button input, requirement 77 AVcc AVCC — A/D and D/A converter positive power supply 78 Vref VREF — A/D and D/A converter reference voltage 79 AN0 PLVBAT Input Battery voltage detection input 80 AN1 PLVDCI Input DC jack voltage detection input 81 P42 TEMP Output Ambient temperature detection input 82 AN3 RKEY Input Remote control key operation detection input 83 AN4 HKEY1 Input Unit key operation detection input 1 84 AN5 HKEY2 Input Unit key operation detection input 2 85 AN6 CHGCNT Output Charging current control output 86 DA1 LDVAR Output P.U. laser power setting output 87 AVss AVSS — A/D and D/A converter ground potential 88 Vss VSS — Ground potential 89 P24 BATOFF Output Battery OFF output 90 TIOCB4 MCMON Output Internal operation status monitor 91 P26 NIHEXT Input Ni-MH battery detection input 92 P27 DCNT1M Output Mechanism driver enable output 93 PG0 SENSE Input System LSI servo sense input 94 PG1 _FOK Input Focus OK signal input 95 PG2 _XRST Output System LSI hard reset output 96 PG3 CKSTP Output Microcomputer standby operation monitor output 97 PG4 _EJSW Input Ejection lever operation detection input 98 Vcc VDD — Positive power supply 99 P10 PCNT2 Output Vcc supply control output of power IC 100 P11 HDON Output Recording head current control output

Input/Output

In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.

FunctionPort Name Terminal Name

– 39 –

MD-MT20H/16E

IC401 RH-iX0298AWZZ: System Microcomputer (IX0298AW) (3/3)

System LSI expansion output port (6th generation: LR37811)

Pin No.

52 EXPORT0 LDCNT1 Output Recording head raising-lowering control output 1 See the separate table *3. 53 EXPORT1 LDCNT2 Output Recording head raising-lowering control output 2 See the separate table *3. 54 EXPORT2 — Output Not used. (Open) 55 EXPORT3 EMPH1 Output Audio emphasis control output 1 See the separate table *2. 56 EXPORT4 DCNT Output Mechanism driver enable output 'H': Driver operation ON 57 EXPORT5 OPTCNT Output Optical digital input circuit control 'H': Circuit operation ON 58 EXPORT6 DAPON Output D/A converter operation control output 'H': Operation ON 59 EXPORT7 ADPON Output A/D converter operation control output 'H': Operation ON

Port Name

Terminal Name Input/Output

Function

Remarks

*1: List of TEST port settings

TEST1

TEST0

H H Normal mode H L No adjustment mode L H Test mode L L (Settings prohibited)

Details

*2: List of EMPH port settings

EMPH1 EMPH0

H H fs=32K: 'ON' H L fs=48K: 'ON' L H OFF L L fs=44.1K: 'ON'

Details

*3: List of LDCNT port settings

LDCNT1 LDCNT0

H H Brake H L Drive UP L H Drive DOWN L L Output OFF

Details

CIRCUIT DESCRIPTION

Charging control works as shown below.

Charging is performed in the following three modes. Initial charging -> Main charging Supplementary charging -> Finish The details are shown below. The current value is measured by voltage on both ends of R250/R251.

Initial charging

The charging current is approx. 250 mA. The initial charging time varies depending on the battery condition. The charging time may be more than five minutes, depending on the initial battery condition. If the battery voltage is below 2.0 V (or over 3.75 V) after two minutes, the charging mode is cancelled. When the battery voltage is over 2.0 V and less than 3.75 V after five minutes, the main charging mode is selected.

Main charging

The charging current is approx. 375 mA. The main charging time varies depending on the battery condition.

When the full-charge check is performed, the output of pin 51 is pulled H and the voltage is measured at five minute intervals (eight separate voltage measurements should be made to get a mean voltage value for consideration). The voltage value is read 500 msec after the output of pin 51 (battery voltage detection gain select output) is pulled H. The current reading is compared with the reading taken 30 minutes before and one of three judgements is given: Same, Higher or Lower. The voltage drop is detected, and the charging is stopped. When battery voltage is over 2.8 V, a full-charge check will be performed (when it is below 2.8 V, the full-charge check will not be conducted). When the battery voltage is not over 2.8 V, the initial charging mode is not changed to the main charging mode. It may be more than five minutes before the battery voltage exceeds 2.8 V. (The initial charging time varies depending on the battery condition.)

Supplementary charging

The supplementary charging mode (charging current: 250 A) will be engaged using the following specifications, depending on the main charging mode. After the main charging is completed, the battery is charged for about two hours at a current of 250 mA, and then the charging mode is cancelled.

– 40 –

MD-MT20H/16E

Battery voltage measurement

When the battery is being used or while it is being charged, the output of pin 17 should be H (battery voltage measurement output). The output should be held L in the power-off mode and in the other modes. However, when it is necessary to measure the battery voltage, pull pin 17 (battery voltage measurement output) H temporarily, to make the measurement.

Power supply change

When one of the power supplies is selected, the port settings are as follows:

Port name

Pin 3 Charge ON output L L Pin 85 Charging current control output Output port L Output port H Pin 89 Battery OFF output H (1) L (3)

The port settings in the power-off mode are as follows:

When operating from the AC adaptor

When operating from the battery

Port name

Pin 3 Charge ON output L L H Pin 85 Charging current control output Output port L Output port L 3-mode output Pin 89 Battery OFF output H (1) L (3) L

When operating from the AC adaptor

When operating from the battery

When charging

Charging test mode

For details about the test mode, see the separate page.

Charging circuit description

The charging current value is determined by measuring the voltage across R250/R251. The charging current is controlled by IC805, Q252, IC803, the rechargeable battery, and R250/R251. The reference voltage for IC401 is output from pin 85 (DA port) and is input on pin 5 on IC805. Since the charging current is controlled by the NFB loop, the circuit is designed so that pin 5 on IC805 will have the same potential as the voltage across R250/R251. Since R250/R251 is 0.5 ohms, the desired charging current can be obtained by varying the potential of pin 5 on IC805.

Battery voltage measurement

The battery voltage can be measured using either of the following two modes.

1) Pin 51 on IC401 Output L The output should always be L except during the following charging voltage measurement mode.

2) Pin 51 on IC401 Output H The output should be H while in the charging voltage measurement mode. Since the charging voltage is measured at intervals of five minutes while in the charging mode, the output should only be H about 500 msec every 5 minutes.

SW801 Ni-MH BATTERY DETECTION

VCC4 TP803

NFB loop

BATTERY TERMINAL

Reference voltage input section

Q253 RN1113

3

R260

3.3M

R257 100K

C254

0.1

R259 82K

R261 270K

R262 24K

R270

D

2

1

Q252 2SC4738 GR

100

G

R258

180K

C253

0.1

7

8

V+ O - +

D812

S

SB10015C

IC803 FDT439N CHARGING CIRCUIT

R256

18K

R255

5

6

+

-

O

V-

TP808

Q254 RN1113

3

R254

2.2K

0.2M

C258

0.0047

IC805 NJM022V

2

1

VCC3

D S S

1 2

G IC806

NDC631N

R273

56K

C250

0.1

6

D D

5 4 3

R278

2.2K

R252

150K

R253

75K

R250

GND1

1

R804

1.0A

R251

Resistor to detect the charging current

TP804

1

– 41 –

MD-MT20H/16E

–– MEMO ––

– 42 –

PARTS GUIDE

MD-MT20H/16E

“HOW TO ORDER REPLACEMENT PARTS”

To have your order filled promptly and correctly, please furnish the following information.

1. MODEL NUMBER 2. REF. No.

3. PART NO. 4. DESCRIPTION

MARK: SPARE PARTS-DELIVERY SECTION

Explanation of capacitors/resistors parts codes

Capacitors

VCC ....................... Ceramic type

VCK........................ Ceramic type

VCT........................ Semiconductor type

VC • • MF ............... Cylindrical type (without lead wire)

VC • • MN............... Cylindrical type (without lead wire)

VC • • TV................ Square type (without lead wire)

VC • • TQ ............... Square type (without lead wire)

VC • • CY ............... Square type (without lead wire)

VC • • CZ ............... Square type (without lead wire)

VC • • • • • • • • • J .. The 13th character represents capacity difference.

("J" ±5%, "K" ±10%, "M" ±20%, "N" ±30%, "C" ±0.25 pF, "D" ±0.5 pF, "Z" +80-20%.)

If there are no indications for the electrolytic capacitors, error is ±20%.

MODEL

MD-MT20H(BL) MD-MT20H(GL) MD-MT20H(S) MD-MT16E(S)

For U.S.A. only

Contact your nearest SHARP Parts Distributor to order.

For location of SHARP Parts Distributor, Please call Toll-Free; 1-800-BE-SHARP

Resistors

VRD ....................... Carbon-film type

VRS........................ Carbon-film type

VRN ....................... Metal-film type

VR • • MF............... Cylindrical type (without lead wire)

VR • • MN ............... Cylindrical type (without lead wire)

VR • • TV ................ Square type (without lead wire)

VR • • TQ ............... Square type (without lead wire)

VR • • CY ............... Square type (without lead wire)

VR • • CZ ............... Square type (without lead wire)

VR • • • • • • • • • J .. The 13th character represents error.

("J" ±5%, "F" ±1%, "D" ±0.5%.)

If there are no indications for other parts, the resistors are ±5% carbon-film type.

NOTE:

Parts marked with “ ” are important for maintaining the safety of the set. Be sure to replace parts with specified ones for maintaining the safety and performance of the set.

MD-MT20H/16E

PARTS CODE NO. PARTS CODE

PRICE

RANK

DESCRIPTIONNO.

INTEGRATED CIRCUITS

IC101 VHIIR3R55//-1 J AQ RF Signal,Processor,IR3R55 IC200 VHI62FP2002-1 J AE 2.0V Regulator,62FP2002 IC201 VHILR37811/-1 J BB Encode/Decode/

IC202 RH-IX2567AFZZ J BA 4M bit D-RAM,IX2567AF IC351 VHI74ACT02T-1 J AE Head Driver,74ACT02T IC353 VHIFTD2005/-1 J AG Head Driver,FTD2005 IC354 VHICPH5608/-1 J AH Head Driver,CPH5608 IC401 RH-IX0298AWZZ J AX System Microcomputer,

IC402 VHIS29L294A-1 J AH EEPROM,S29L294A IC431 VHIS80820LN-1 J AD Reset,S80820LN IC501 VHIAK4519VF-1 J AQ AD/DA Converter,AK4519VF IC601 VHIMPC17A39-1 J AQ 4ch PWM Driver,MPC17A39 IC651 VHILB1930M/-1 J AH Head Up/Down Driver,LB1930M IC701 VHIIR3R54N/-1 J AQ Audio Amp.,IR3R54N IC702 VHI62GR4522-1 J AG 4.5V Regulator,62GR4522 IC703 VHIIR3R54N/-1 J AQ Audio Amp.,IR3R54N IC771 VHI62GR2522-1 J AG 2.5V Regulator,62GR2522 IC801 VHIHN1C01FU-1 J AD Over Voltage Reverse

IC802 VHIFDC634P/-1 J AG Over Voltage Reverse ConnecIC803 VSFDT439N//-1 J AL Charging Circuit,FDT439N

IC805 VHINJM022V/-1 J AG Charging Circuit,NJM022V IC806 VHINDC631N/-1 J AG Charging Circuit,NDC631N IC807 VHIRN4904//-1 J AD Charging Circuit,RN4904 IC808 VHIHN1C01FU-1 J AD Charging Circuit,HN1C01FU IC820 VHI62FP2502-1 J AE 2.5V Regulator,62FP2502 IC821 VHIIR3M09N/-1 J AL DC/DC Converter,IR3M09N IC822 VHICPH3403/-1 J AE 2.7V Regulator,CPH3403 IC841 VHIXC62HS02-1 J AE 2.35V Regulator,XC62HS02 IC851 VHITC7S14FU-1 J AE 2.35V Regulator,TC7S14FU IC871 VHIS8324A28-1 J AH 2.8V Up Converter,S8324A28 IC872 VHIS80813LN-1 J AE 2.8V Up Converter,S80813LN IC901 VHIBA6966FV-1 J AM Spindle Motor Driver,BA6966FV Q873 VHINDS332P/-1 J AD FETIC,NDS332P

Servo Atrac,LR37811

IX0298AW

Connection Protection Circuit, HN1C01FU

tion Protection Circuit,FDC634P

TRANSISTORS

Q101 VS2SA17457/-1 J AB Silicon,PNP,2SA17457 Q251 VSRN1113///-1 J AC Digital,NPN,RN1113 Q252 VS2SC4738GR-1 J AC Silicon,NPN,2SC4738 GR Q253~255 VSRN1113///-1 J AC Digital,NPN,RN1113 Q461 VS2SC4738GR-1 J AC Silicon,NPN,2SC4738 GR Q711 VSRN1444A//-1 J AC Digital,NPN,RN1444 A Q721 VS2SC4213B/-1 J AC Silicon,NPN,2SC4213 B Q874 VSRN1113///-1 J AC Digital,NPN,RN1113 Q901 VSRN1113///-1 J AC Digital,NPN,RN1113

DIODES

D351 VHDSBE803//-1 J AD Silicon,SBE803 D431 VHD1SS361//-1 J AB Silicon,1SS361 D461 VHDRB731U//-1 J AC Silicon,RB731U D492 VHE15AZ7R5Y-1 J AC Zener,7.5V,15AZ7.5Y D494 VHE15AZ7R5Y-1 J AC Zener,7.5V,15AZ7.5Y D800 VHD1SS360//-1 J AB Silicon,1SS360 D801 VHDSB10015C-1 J AD Silicon,SB10015C D802 VHE015Z5R1Y-1 J AD Zener,5.1V,015Z5.1Y D803 VHD1SS382//-1 J AC Silicon,1SS382 D812 VHDSB10015C-1 J AD Silicon,SB10015C D821 VHDEC30LA02-1 J AF Silicon,EC30LA02 D822 VHD1SS389//-1 J AB Silicon,1SS389 D831 VHD1SS372//-1 J AD Silicon,1SS372 D861 VHDEP10LA03-1 J AD Silicon,EP10LA03 D871 VHDEP10LA03-1 J AD Silicon,EP10LA03

COILS

L100 VPBNN100K0000 J AC 10 µH L171 RCILC0356AFZZ J AC 10 µH,Choke L201~206 RCILC0353AFZZ J AB Tip Solid Induction,100mA L209 RCILC0353AFZZ J AB Tip Solid Induction,100mA L451 RCILC0352AFZZ J AB Tip Impeder,150mA L452~454 RCILC0353AFZZ J AB Tip Solid Induction,100mA L456 RCILC0353AFZZ J AB Tip Solid Induction,100mA

PRICE

RANK

L500 RCILC0344AFZZ J AC 47 µH,Choke L600 RCILC0331AFZZ J AC 2.2 µH,Choke L601~604 RCILC0358AFZZ J AC 4.7 µH,Choke L608~610 RCILC0358AFZZ J AC 4.7 µH,Choke L702~704 RCILC0353AFZZ J AB Tip Solid Induction,100mA L711~714 RCILC0353AFZZ J AB Tip Solid Induction,100mA L719 VPBNNR47K0000 J AC 0.47 µH L751,752 RCILC0354AFZZ J AC 22 µH,Choke L771 RCILC0359AFZZ J AC 100 µH,Choke L821 RCILC0004AWZZ J AF 4.7 µH,Choke L822 RCILC0005AWZZ J AF 10 µH,Choke L862 RCILC0359AFZZ J AC 100 µH,Choke L871 RCILC0344AFZZ J AC 47 µH,Choke L887,888 RCORF0017AWZZ J Tip Impeder L921 RCILC0353AFZZ J AB Tip Solid Induction,100mA

DESCRIPTION

VIBRATORS

XL201 RCRSC0028AFZZ J AH Crystal,33.868 MHz XL401 RCRM-0201AFZZ J AD Ceramic,4.19 MHz

CAPACITORS

C100 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,Tantalum C102,103 VCKYTV1AB105K J AD 1 µF,10V C104 VCKYCY1CB273K J AA 0.027 µF,16V C106 VCKYTV1CB224K J AB 0.22 µF,16V C107 VCKYCY1EB123K J AA 0.012 µF,25V C109 VCKYTV1AB105K J AD 1 µF,10V C110 VCKYTV1CB224K J AB 0.22 µF,16V C111 VCKYCY1HB332K J AA 0.0033 µF,50V C112 VCKYCY1CB333K J AA 0.033 µF,16V C121,122 VCCCCY1HH271J J AA 270 pF (CH),50V C123,124 VCCSCY1HL391J J AA 390 pF,50V C130 VCKYCY1CB104K J AB 0.1 µF,16V C161 VCKYTV1AB105K J AD 1 µF,10V C165 VCKYCY1CB333K J AA 0.033 µF,16V C171 VCSATE0JJ107M J AE 100 µF,6.3V,Electrolytic,

C200,201 VCKYTV1AB105K J AD 1 µF,10V C202 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,

C203 VCKYCY1CB104K J AB 0.1 µF,16V C204 VCKYTV1CB474K J AC 0.47 µF,16V C205 VCKYCY1CB104K J AB 0.1 µF,16V C207 VCKYCY1CB104K J AB 0.1 µF,16V C209 VCCCCY1HH220J J AA 22 pF (CH),50V C211,212 VCCCCY1HH5R0C J AA 5 pF (CH),50V C250 VCKYCY1CB104K J AB 0.1 µF,16V C253 VCKYTV1CB104K J AA 0.1 µF,16V C254~256 VCKYCY1CB104K J AB 0.1 µF,16V C258 VCKYCY1HB472K J AA 0.0047 µF,50V C351 VCCCCY1HH560J J AA 56 pF (CH),50V C353 VCSAFA0JJ106M J AD 10 µF,6.3V,Electrolytic,Tantalum C354 VCKYCY1CB104K J AB 0.1 µF,16V C357 VCKYCY1CB104K J AB 0.1 µF,16V C361 VCKYTV1HB393K J AB 0.039 µF,50V C401 VCKYCY1CB104K J AB 0.1 µF,16V C431 VCKYTV1CB474K J AC 0.47 µF,16V C452 VCKYCY1HB102K J AA 1000 pF,50V C454 VCKYCY1HB222K J AA 0.0022 µF,50V C481,482 VCKYTQ1CB105K J AD 1 µF,16V C491 VCKYTV1CB104K J AA 0.1 µF,16V C500 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,Tantalum C501,502 VCKYCY1HB222K J AA 0.0022 µF,50V C503,504 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,

C505,506 VCKYCY1HB102K J AA 1000 pF,50V C507 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,Tantalum C508 VCKYTV1AB105K J AD 1 µF,10V C509,510 VCKYTV1CF225Z J AC 2.2 µF,16V C511 VCKYTV1AB105K J AD 1 µF,10V C600 VCEAPS226AF0J J AB 22 µF,6.3V,Electrolytic C601~604 VCKYTV1AB105K J AD 1 µF,10V C605 VCKYCY1CB104K J AB 0.1 µF,16V C608 VCKYTQ1CB105K J AD 1 µF,16V C609,610 VCKYTV1AB105K J AD 1 µF,10V C622 VCKYCY1CB104K J AB 0.1 µF,16V C651 VCKYTV1CF105Z J AB 1 µF,16V C701,702 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,Tantalum C703 VCKYCY1EB103K J AA 0.01 µF,25V

Tantalum

– 1 –

MD-MT20H/16E

NO. PARTS CODE

C711,712 VCCCCY1HH101J J AA 100 pF (CH),50V C713,714 VCKYTV1AB105K J AD 1 µF,10V C715 VCKYCY1CB104K J AB 0.1 µF,16V C719 VCSATA1AJ106M J AE 10 µF,10V,Electrolytic,Tantalum C720 VCKYCY1HB102K J AA 1000 pF,50V C721,722 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,

C723,724 VCKYCY1HB102K J AA 1000 pF,50V C725,726 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,

C731 VCKYCY1CF224Z J AB 0.22 µF,16V C733,734 VCKYTV1CB104K J AA 0.1 µF,16V C735 VCKYCY1HB102K J AA 1000 pF,50V C751,752 VCKYTV1CB823K J AB 0.082 µF,16V C753,754 VCKYTV1CF105Z J AB 1 µF,16V C755 VCKYCY1EB103K J AA 0.01 µF,25V C756,757 VCKYTV1AB684K J AC 0.68 µF,10V C758 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,

C759,760 VCKYCY1CB273K J AA 0.027 µF,16V C761,762 VCKYTV1CF225Z J AC 2.2 µF,16V C765,766 VCKYTV1CB224K J AB 0.22 µF,16V C771 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,

C773 VCKYTV1CB224K J AB 0.22 µF,16V C774 VCKYTV1CF105Z J AB 1 µF,16V C776 VCKYCY1HB102K J AA 1000 pF,50V C800 VCKYTV1AB105K J AD 1 µF,10V C801 VCKYCY1CB104K J AB 0.1 µF,16V C805 VCEAPS107AF0J J AC 100 µF,6.3V,Electrolytic C806 VCKYTQ1AB335K J 3.3 µF,10V C810 VCKYTV1CB334K J AC 0.33 µF,16V C820 VCKYTV1AB105K J AD 1 µF,10V C821 VCEAPS227AF0G J AC 220 µF,4V,Electrolytic C822 VCCCCY1HH560J J AA 56 pF (CH),50V C823 VCCSCY1HL391J J AA 390 pF,50V C824 VCCSCY1HL561J J AA 560 pF,50V C825 VCCCCY1HH4R0C J AA 4 pF (CH),50V C826 VCKYTQ1CB105K J AD 1 µF,16V C827 RC-SZ0001AWZZ J AG 22 µF,6.3V,Electrolytic C828 VCKYTV1AB105K J AD 1 µF,10V C829 VCKYCY1EB103K J AA 0.01 µF,25V C830 VCKYCY1HB102K J AA 1000 pF,50V C831,832 VCKYCY1CB104K J AB 0.1 µF,16V C834 VCKYCY1CB104K J AB 0.1 µF,16V C841 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,Tantalum C851 VCCCCY1HH151J J AA 150 pF (CH),50V C852 VCKYTV1AB105K J AD 1 µF,10V C863 VCKYTQ1CB105K J AD 1 µF,16V C865,866 VCKYTQ1CB105K J AD 1 µF,16V C869 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,

C871 VCKYTV1CB474K J AC 0.47 µF,16V C874 RC-SZ1145AFZZ J AD 15 µF,10V,Electrolytic C875 VCKYTV1CB104K J AA 0.1 µF,16V C876,877 VCKYTV1AB105K J AD 1 µF,10V C902 VCKYCY1EB103K J AA 0.01 µF,25V C903 VCKYTQ1AB335K J 3.3 µF,10V C905~907 VCKYCY1HB222K J AA 0.0022 µF,50V C908 VCKYTV1CB224K J AB 0.22 µF,16V C909,910 VCKYCY1CB333K J AA 0.033 µF,16V C911 VCKYCY1CB104K J AB 0.1 µF,16V

PRICE RANK

DESCRIPTION

Tantalum

RESISTORS

VRS-CY1JB000J J AA 0 ohm,Jumper,0.8×1.55mm,

VRS-TV2AB000J J AA 0 ohm,Jumper,1.25×2mm,Green R101~104 VRS-CY1JB223J J AA 22 kohms,1/16W R105 VRS-CY1JB394J J AA 390 kohms,1/16W R106 VRS-CY1JB563J J AA 56 kohms,1/16W R154 VRS-CY1JB122J J AA 1.2 kohms,1/16W R161 VRS-CY1JB122J J AA 1.2 kohms,1/16W R202 VRS-TV2AB330J J AA 33 ohms,1/10W R204 VRS-CY1JB102J J AA 1 kohm,1/16W R205 VRS-CY1JB334F J AA 330 kohms,1/16W R206 VRS-CY1JB274F J AA 270 kohms,1/16W R207 VRS-CY1JB681J J AA 680 ohms,1/16W R222 VRS-CY1JB105J J AA 1 Mohm,1/16W R250,251 VRS-TV2AB1R0F J 1 ohm,1/10W R252 VRS-CY1JB154D J AA 150 kohms,1/16W

Green

NO.

R253 VRS-CY1JB753D J AA 75 kohms,1/16W R254 VRS-CY1JB222J J AA 2.2 kohms,1/16W R255 VRS-CY1JB225J J AA 0.2 Mohms,1/16W R256 VRS-CY1JB183J J AA 18 kohms,1/16W R257 VRS-CY1JB104J J AA 100 kohm,1/16W R258 VRS-CY1JB184J J AA 180 kohms,1/16W R259 VRS-CY1JB823J J AA 82 kohms,1/16W R260 VRS-CY1JB335J J AA 3.3 Mohms,1/16W R261 VRS-CY1JB274F J AA 270 kohms,1/16W R262 VRS-CY1JB243F J AA 24 kohms,1/16W R263 VRS-CY1JB104J J AA 100 kohm,1/16W R264 VRS-CY1JB183D J AA 18 kohms,1/16W R265 VRS-CY1JB223D J AA 22 kohms,1/16W R266 VRS-CY1JB104D J AA 100 kohm,1/16W R267 VRS-CY1JB753D J AA 75 kohms,1/16W R268 VRS-CY1JB222J J AA 2.2 kohms,1/16W R269,270 VRS-CY1JB101J J AA 100 ohm,1/16W R271 VRS-CY1JB102J J AA 1 kohm,1/16W R273 VRS-CY1JB563J J AA 56 kohms,1/16W R274 VRS-CY1JB753D J AA 75 kohms,1/16W R275 VRS-CY1JB563D J AA 56 kohms,1/16W R276 VRS-CY1JB332D J AA 3.3 kohms,1/16W R277 VRS-CY1JB393J J AA 39 kohms,1/16W R278 VRS-CY1JB222J J AA 2.2 kohms,1/16W R279 VRS-CY1JB101J J AA 100 ohm,1/16W R351 VRS-TV2AB5R6J J AA 5.6 ohms,1/10W R361 VRS-TQ2BB150J J AA 15 ohms,1/8W R403 VRS-CY1JB102J J AA 1 kohm,1/16W R404 VRS-CY1JB104J J AA 100 kohm,1/16W R405 VRS-CY1JB103J J AA 10 kohm,1/16W R406 VRS-CY1JB104J J AA 100 kohm,1/16W R407 VRS-CY1JB103J J AA 10 kohm,1/16W R408 VRS-CY1JB104J J AA 100 kohm,1/16W R411 VRS-CY1JB104J J AA 100 kohm,1/16W R412 VRS-CY1JB103J J AA 10 kohm,1/16W R413~415 VRS-CY1JB102J J AA 1 kohm,1/16W R422 VRS-CY1JB104J J AA 100 kohm,1/16W R423 VRS-CY1JB223F J AA 22 kohms,1/16W R424 VRS-CY1JB223J J AA 22 kohms,1/16W R425 VRS-CY1JB223J J AA 22 kohms,1/16W R426 VRS-CY1JB223F J AA 22 kohms,1/16W R431 VRS-CY1JB334J J AA 330 kohms,1/16W R451 VRS-CY1JB562J J AA 5.6 kohms,1/16W R452 VRS-CY1JB822J J AA 8.2 kohms,1/16W R453 VRS-CY1JB183J J AA 18 kohms,1/16W R455 VRS-CY1JB562J J AA 5.6 kohms,1/16W R456 VRS-CY1JB822J J AA 8.2 kohms,1/16W R457 VRS-CY1JB183J J AA 18 kohms,1/16W R458 VRS-CY1JB563J J AA 56 kohms,1/16W R460 VRS-CY1JB683J J AA 68 kohms,1/16W R461~465 VRS-CY1JB104J J AA 100 kohm,1/16W R466 VRS-CY1JB564J J AA 560 kohms,1/16W R467 VRS-CY1JB183J J AA 18 kohms,1/16W R492 VRS-CY1JB102J J AA 1 kohm,1/16W R500 VRS-CY1JB4R7J J AA 4.7 ohms,1/16W R501,502 VRS-CY1JB471J J AA 470 ohms,1/16W R600 VRS-CY1JB560J J AA 56 ohms,1/16W R601 VRS-CY1JB563J J AA 56 kohms,1/16W R701,702 VRS-CY1JB101J J AA 100 ohm,1/16W R703 VRS-CY1JB124J J AA 120 kohms,1/16W R710 VRS-TV2AB560J J AA 56 ohms,1/10W R711,712 VRS-CY1JB562J J AA 5.6 kohms,1/16W R713,714 VRS-CY1JB103J J AA 10 kohm,1/16W R715,716 VRS-CY1JB104J J AA 100 kohm,1/16W R717 VRS-CY1JB102J J AA 1 kohm,1/16W R719,720 VRS-CY1JB822J J AA 8.2 kohms,1/16W R723,724 VRS-CY1JB682J J AA 6.8 kohms,1/16W R725 VRS-CY1JB101J J AA 100 ohm,1/16W R726 VRS-CY1JB393J J AA 39 kohms,1/16W R727 VRS-CY1JB822J J AA 8.2 kohms,1/16W R728 VRS-CY1JB102J J AA 1 kohm,1/16W R729,730 VRS-CY1JB272J J AA 2.7 kohms,1/16W R753 VRS-CY1JB124J J AA 120 kohms,1/16W R754 VRS-CY1JB274J J AA 270 kohms,1/16W R756,757 VRS-CY1JB273J J AA 27 kohms,1/16W R761,762 VRS-CY1JB432J J AA 4.3 kohms,1/16W R763,764 VRS-CY1JB680J J AA 68 ohms,1/16W R765,766 VRS-CY1JB180J J AA 18 ohms,1/16W R767,768 VRS-CY1JB102J J AA 1 kohm,1/16W R769,770 VRS-CY1JB153J J AA 15 kohms,1/16W R800 VRS-CY1JB223J J AA 22 kohms,1/16W R801 VRS-CY1JB222F J 2.2 kohms,1/16W

PRICE RANK

DESCRIPTIONPARTS CODE

– 2 –

MD-MT20H/16E

PARTS CODE NO. PARTS CODE

R802 VRS-CY1JB102J J AA 1 kohm,1/16W R803 VRS-CY1JB104J J AA 100 kohm,1/16W R804 VHHMSMDC100-1 J AH Thermistor,Positive/Negative C,

R806 VRS-TV2AB102J J AA 1 kohm,1/10W R807 VRS-CY1JB681F J 680 ohms,1/16W R808 VRS-CY1JB562J J AA 5.6 kohms,1/16W R809 VRS-CY1JB222J J AA 2.2 kohms,1/16W R810,811 VRS-CY1JB184F J AA 180 kohms,1/16W R815 VRS-CY1JB563F J AA 56 kohms,1/16W R816 VRS-CY1JB243F J AA 24 kohms,1/16W R821 VRS-CY1JB104J J AA 100 kohm,1/16W R823 VRS-CY1JB104J J AA 100 kohm,1/16W R824 VRS-CY1JB153J J AA 15 kohms,1/16W R826 VRS-CY1JB103J J AA 10 kohm,1/16W R827 VRS-CY1JB304F J 300 kohms,1/16W R828 VRS-CY1JB224F J AA 220 kohms,1/16W R829 VRS-CY1JB333J J AA 33 kohms,1/16W R831 VRS-CY1JB104J J AA 100 kohm,1/16W R832 VRS-CY1JB106J J AA 10 Mohm,1/16W R833 VRS-CY1JB470J J AA 47 ohms,1/16W R851 VRS-CY1JB103J J AA 10 kohm,1/16W R852 VRS-CY1JB473J J AA 47 kohms,1/16W R853 VRS-CY1JB101J J AA 100 ohm,1/16W R871 VRS-CY1JB103J J AA 10 kohm,1/16W R878 VRS-CY1JB104J J AA 100 kohm,1/16W R901,902 VRS-CY1JB1R0J J AA 1 ohm,1/16W R903 VRS-CY1JB331J J AA 330 ohms,1/16W R904 VRS-CY1JB333J J AA 33 kohms,1/16W R905 VRS-CY1JB104J J AA 100 kohm,1/16W R906 VRS-CY1JB274J J AA 270 kohms,1/16W R907 VRS-CY1JB184J J AA 180 kohms,1/16W R908 VRS-CY1JB104J J AA 100 kohm,1/16W R909 VRS-CY1JB103J J AA 10 kohm,1/16W R920 VRS-CY1JB104J J AA 100 kohm,1/16W R921 VRS-CY1JB331J J AA 330 ohms,1/16W R922 VRS-CY1JB104J J AA 100 kohm,1/16W

PRICE

RANK

DESCRIPTIONNO.

1.0A

OTHER CIRCUITRY PARTS

CN101 QCNCW801XAFZZ J AH Socket,22Pin CN451 QCNCW804NAFZZ J AE Socket,13Pin CN482 QCNCW804JAFZZ J Socket,9Pin CN601 QCNCW716RAFZZ J AF Socket,16Pin CN701,702 QCNCWWQ33AFZZ J AE Socket,33Pin

! F871 QFS-L501AAFN0 J AG Fuse,T0.5A L 63V

J701 VHLGP1FB95R-1 J AP Jack,Optical/Line IN J702 QJAKM0014AWZZ J AF Jack,Mic IN J703 QJAKM0015AWZZ J AL Jack,Remote Control/

J801 QJAKC0007AWZZ J AF Jack,DC IN M901 RMOTV0524AFZZ J AS Motor Ass’y [Spindle] M902 RMOTV0511AFZZ J AT Motor Ass’y [Sled] M903 RMOTV0512AFM1 J AR Motor Ass’y [Head Up/Down] PH901(8-3) VHPGP1S93K/-1 J AF Phote Interrupter,GP1S93K SW401 QSW-M0172AFZZ J AD Switch,Push Type [Eject] SW402 QSW-S0948AFZZ J AC Switch,Slide Type [Hold] SW403 QSW-M0172AFZZ J AD Switch,Push Type

SW801 QSW-M0006AWZZ J AD Switch,Push Type SW902(8-2) QSW-M0170AFZZ J AD Switch,Push Type [Disc Protect]

Headphones

[Disc Lid Open] [Ni-MH Battery Detection]

MECHANICAL PARTS

1 NGERH0597AFZZ J AC Wheel,Drive 2 NSFTD0334AFZZ J AD Screw,Drive 3 LHLDX3141AFM1 J AP Cartridge Holder Ass’y 4 MSPRT1625AFFJ J AD Spring,Eject Lever 5 LANGF1610AFZZ J Bracket,Cancel 6 LCHSM0944AFM1 J AT Main Chassis Ass’y 7 PCUSG0599AFZZ J AB Cushion,Mechanism 8 QPWBH0337AFM1 J AN Mechanism Flexible PWB Ass’y 8- 1 ———— — Mechanism Flexible PWB

8- 2(SW902) QSW-M0170AFZZ J AD Switch,Push Type [Disc Protect] 8- 3(PH901) VHPGP1S93K/-1 J AF Phote Interrupter,GP1S93K 9 MSPRP0925AFZZ J Spring,Drive Screw 10 PCOVP1339AFZZ J AD Cover,Mechanism 11 MARMM0170AFM1 J AK Magnetic Field Block 12 NGERH0603AFZZ J AE Gear,Drive

(Not Replacement Item)

PRICE

RANK

! 13 RCTRH8175AFZZ J BM Optical Pickup Unit

14 MSPRP0922AFFJ J AD Spring,Drive Grip 15 MSPRP0923AFZZ J Spring,Thrust Plate 16 NSFTM0292AFFW J AC Shaft,Guide 17 MLEVF2641AFZZ J Lever,Eject 18 QPWBH0338AFZZ J AH Magnetic Head Flexible PWB 19 MLEVF2637AFM1 J AH Lift Working Lever Ass’y 20 MLEVF2638AFFW J AD Lever,Block 21 MLEVF2639AFFW J AD Lever,Lift Joint 22 MLEVF2640AFZZ J Lever,Lift 23 MSPRD1362AFFJ J AD Spring,Lift Lever 24 RCILH0112AFZZ J AM Magnetic Head 501 LX-BZ0804AFFF J AA Screw,ø1.4×2.2mm 502 LX-JZ0154AFZZ J AA Screw,ø1.4×2.8mm 503 LX-BZ0823AFZZ J AA Screw,ø1.4×1.2mm 504 LX-WZ9290AFZZ J AA Washer,ø0.8×ø2.4×0.2mm 505 LX-BZ0800AFZZ J AA Screw,ø1.4×2.5mm 506 XSPSN14P01500 J AA Screw,ø1.7×2.5mm 507 LX-JZ0148AFZZ J AA Screw,ø1.7×3mm 508 XWSSD14-05000 J AA Washer,ø1.4×0.5mm 509 LX-BZ0959AFZZ J AB Screw,ø1.4×1.8mm 510 LX-WZ9296AFZZ J AA Washer,ø1.5×ø3.5×0.25mm 511 LX-BZ0974AFZZ J AB Screw,ø1.4×5.5mm 512 LX-BZ0991AFZZ J AB Screw,ø1.2×1.6mm M901 RMOTV0524AFZZ J AS Motor Ass’y [Spindle] M902 RMOTV0511AFZZ J AT Motor Ass’y [Sled] M903 RMOTV0512AFM1 J AR Motor Ass’y [Head Up/Down]

DESCRIPTION

CABINET PARTS

201 GFTAT3004AWM1 J AW Top Cabinet Ass’y 201 GFTAT3004AWM2 J AW Top Cabinet Ass’y 201 GFTAT3004AWM3 J AW Top Cabinet Ass’y 201 GFTAT3005AWM1 J AW Top Cabinet Ass’y [MD-MT16E]

201- 1 ———— — Top Cabinet 201- 2 LANGZ0022AWFC J Bracket,Top Cabinet

202 HDECQ0480AWM1 J AM Decoration Plate Ass’y 202- 1 ———— — Plate,Decoration

202- 2 PSHEZ0033AWZZ J Sheet,Decoration Plate 203 TCAUS0044AWZZ J AB Label A,Class 3B 204 PSHEZ0035AWZZ J AB Sheet A,Operation Button 205 PSHEZ0036AWZZ J AB Sheet B,Operation Button 206 PSHEZ0037AWZZ J AC Sheet C,Operation Button 207 JKNBZ0623AWSA J AM Button,Operation 208 LANGT0058AWFW J AG Bracket,Operation Button 209 MSPRP0026AWFW J AB Spring A,Cartridge 210 MSPRP0027AWFW J AC Spring B,Cartridge 211 MSPRP0028AWFW J AB Spring C,Cartridge 212 TCAUS0043AWZZ J AC Label B,Class 3B 213 RUNTK0005AWZZ J A V Key Switch Flexible PWB Ass’y 214 RUNTZ0015AWZZ J BD LCD Ass’y 215 PSHEZ0046AWZZ J Sheet E,LCD 216 PSHEZ0044AWZZ J Sheet C,LCD 217 PCUSZ0016AWZZ J AB Cushion,Mechanism,Top 218 PSHEZ0045AWZZ J Sheet D,LCD 219 PCUSZ0017AWZZ J Cushion,Cartridge 220 GFTAU3003AWSA J AS Bottom Cabinet

220 GFTAU3004AWSA J AS Bottom Cabinet [MD-MT16E] 220 GFTAU3006AWSA J AS Bottom Cabinet [MD-MT20H-BL] 220 GFTAU3007AWSA J AS Bottom Cabinet

221 JKNBZ0625AWSA J AD Button,Hold 222 GCOVA1241AWSA J AC Cover,DC IN Jack 223 PSHET0014AWZZ J AE Sheet,Bottom Cabinet 224 PSHEZ0043AWZZ J AB Sheet,Bottom Cabinet Sheet 225 LHLDZ3010AWM1 J AW Main Frame Ass’y 226 PCUSZ0015AWZZ J AB Cushion,Mechanism,Front 227 PCUSZ0014AWZZ J AB Cushion,Mechanism,Right 228 PCUSG0534AFZZ J AC Rubber,Preventive Vibration 229 PCUSG0641AFSA J AB Insulator 230 PSHET0015AWZZ J AB Sheet B,Insulator 231 PSHET0016AWZZ J AC Sheet C,Insulator 232 PCOVW1009AW00 J AC Cover,Battery Terminal,233 QTANB9018AWFQ J AD Terminal,Battery,234 PCOVW1008AW00 J AC Cover,Battery Terminal,+

[MD-MT20H-S for Europe Only] [MD-MT20H-BL] [MD-MT20H-GL for U.K. Only]

(Not Replacement Item)

[MD-MT20H-S for Europe Only]

[MD-MT20H-GL for U.K. Only]

– 3 –

MD-MT20H/16E

NO. PARTS CODE

235 QTANB9017AWFQ J AD Terminal,Battery,+ 236 PGIDM0027AW00 J Guide,Battery 237 QTANB9016AWFQ J AD Terminal,Battery,+/238 LHLDZ1231AW00 J AC Holder,Battery Terminal,+/239 MLEVP0094AW00 J AC Lever,Battery Push 240 JKNBZ0624AWSA J AF Lever,Open 241 GCABA1185AWSA J AF Front Cabinet

241 GCABA1185AWSB J AF Front Cabinet [MD-MT20H-BL] 242 GCABB1185AWSA J AE Rear Cabinet

242 GCABB1185AWSB J AE Rear Cabinet [MD-MT20H-BL] 243 QCNWN1478AWZZ J AG Flat Cable,33Pin 244 PSHEF0019AWZZ J AB Felt,Mechanism Flexible PWB 245 GDORB0001AWSA J AE Door,Battery [MD-MT20H-S/

245 GDORB0001AWSB J AE Door,Battery [MD-MT20H-BL] 245 GDORB0001AWSC J AE Door,Battery

246 PCUSZ0012AWZZ J AB Cushion,Vub 601 LX-BZ0967AFF3 J AB Screw,ø1.4×2mm 602 LX-BZ0805AFFN J AB Screw,ø1.7×2.5mm 603 LX-BZ0967AFFC J AB Screw,ø1.4×2mm

PRICE RANK

DESCRIPTION

[Except for MD-MT20H-BL]

MT16E for U.K. Only]

[MD-MT20H-GL for U.K. Only]

ACCESSORIES/PACKING PARTS

1 TINSE0255AWZZ J AG Operation Manual 1 TINSE0260AWZZ J AE Operation Manual [MD-MT16E]

1 TINSZ0430AWZZ J AM Operation Manual 2 TCADS0002AWZZ J AB Service Card [U.K.Only]

3 QCNWG0422AFZZ J AQ Optical Digital Cable 4 SPAKZ0490AWZZ J AC Pad,Operation Manual 5 TLABE0299AWZZ J AB Label,Bar Code 5 TLABE0300AWZZ J AB Label,Bar Code 5 TLABE0301AWZZ J AB Label,Bar Code [MD-MT20H-BL]

5 TLABE0302AWZZ J Label,Bar Code [MD-MT16E] 6 SPAKC0808AWZZ J AG Packing Case

6 SPAKC0813AWZZ J AG Packing Case [MD-MT20H-GL] 6 SPAKC0814AWZZ J AG Packing Case [MD-MT20H-BL] 6 SPAKC0815AWZZ J AG Packing Case [MD-MT16E] 7 SPAKA0219AWZZ J AC Packing Add.,Unit [MD-MT20H] 7 SPAKA0222AWZZ J AC Packing Add.,Unit [MD-MT16E] 8 RRMCW0001AWSA J AZ Remote Control

9 QCNWG0382AFZZ J AK Connecting Cord,RCA Type 10 RPHOH0001AWZZ J AW Earphones [MD-MT16E] 10 RPHOH0176AFZZ J AR Earphones [MD-MT20H] 11 UBAGC0001AWZZ J Battery Carrying Case

12 SPAKZ0484AWZZ J AC Pad,AC Adaptor 13 RADPA7038AWZZ J BA AC Adapter 13 RADPA8039AWZZ J BB AC Adapter 14 UBAGC0002AWSA J Carrying Case

15 TLABN0088AWZZ J AB Label,SER No. 16 UBATM0002AWSA J BC Battery,Rechargeable

18 SPAKZ0522AWZZ J Cushion,Protect 19 SPAKZ0518AWZZ J Sheet,Protect 20 TLABN0092AWZZ J AB Label,SER No. [For U.K.] 20 TLABN0092AW02 J AB Label,SER No. [For Europe]

[MD-MT20H for U.K.]

[MD-MT20H for Europe]

[MD-MT20H Only] [U.K. Only] [MD-MT20H-S for Europe Only] [MD-MT20H-GL for U.K. Only]

[MD-MT20H-S for Europe Only]

[MD-MT20H Only]

[MD-MT20H Only] [MD-MT20H Only] [MD-MT20H Only for Europe] [MD-MT20H Only for U.K.]

Nickel-Metal Hydride [MD-MT20H Only]

NO.

OTHER SERVICE PARTS

UDSKM0001AFZZ J AZ Recording Mini Disc 88GMMD-110 J BV High Reflection Disc MMD-110

88GMMD-212 J BU Low Reflection Disc MMD-212 88GMMD-213A J Low Reflection Disc MMD-213A

PRICE RANK

DESCRIPTIONPARTS CODE

(TEAC Test MD) (TEAC Test MD) (TEAC Test MD)

P.W.B. ASSEMBLY (Not Replacement Item)

PWB-A1,2 92LPWB3107MDSS — Main,Audio (Combined Ass’y)

– 4 –

MD-MT20H/16E

501x2 508x2

A

11

506

8

8-3(PH901)

24

B

505

16

14

509

C

502x3

512

18

(SW902)

503

8-1

8-2

507

13

2

D

M903

511

7

M901

9

1

507

19

15

510

21

503x2

504

E

12

6

M902

20

F

10

503

5

3

G

22

17

H

23

4

1

23456

Figure 5 MD MECHANISM EXPLODED VIEW

– 5 –

MD-MT20H/16E

229x2

230

A

202-1

202-2

603x2

202

201

238

237

245

231

227

226

B

201-1

603x2

239

228

243

225

236

PWB-A2

201-2

204

C

206

205

203

234

235

233

232

602x3

PWB-A1

207

214

D

244

602

602 601

215 216x2

218

242

213

E

217

209

F

219

208

240

241

224

223

219

601

211

210

212

G

MD MECHANISM

603x2 603

222

246

H

603x2

1

23456

221

603x2

Figure 6 CABINET EXPLODED VIEW

– 6 –

220

MD-MT20H/16E

PACKING METHOD (MD-MT20H/MT16E FOR U.K. ONLY)

Setting position of switches and knobs

UNIT HOLD OFF Remote Control HOLD CANCEL

1. Operation Manual [MD-MD20H] TiNSE0255AWZZ

1. Operation Manual [MD-MT16E] TiNSE0260AWZZ

2. Service Card TCADS0002AWZZ

3. Optical Digital Cable [MD-MT20H Only] QCNWG0422AFZZ

4. Operation Manual Pad SPAKZ0490AWZZ

5. Bar Cord Label [MD-MT20H-GL] TLABE0300AWZZ

5. Bar Cord Label [MD-MT20H-BL] TLABE0301AWZZ

5. Bar Cord Label [MD-MT16E] TLABE0302AWZZ

6. Packing Case [MD-MT20H-GL] SPAKC0813AWZZ

6. Packing Case [MD-MT20H-BL] SPAKC0814AWZZ

6. Packing Case [MD-MT16E] SPAKC0815AWZZ

7. Packing Add., Unit [MD-MT20H] SPAKA0219AWZZ

7. Packing Add., Unit [MD-MT16E] SPAKA0222AWZZ

8. Remote Control [MD-MT20H Only] RRMCW0001AWSA

9. Connecting Cord, RCA Type QCNWG0382AFZZ

MD-MT16E

10

1

9

7

2

14

16

10. Earphones [MD-MT16E] RPHOH0001AWZZ

10. Earphones [MD-MT20H] RPHOH0176AFZZ

11. Battery Carring Case [MD-MT20H Only] UBAGC0001AWZZ

12. AC Adapter Pad [MD-MT20H Only] SPAKZ0484AWZZ

13. AC Adapter [MD-MT20H Only] RADPA8039AWZZ

14. Carrying Case UBAGC0002AWSA

15. SER No. Label TLABN0088AWZZ

16. Rechargeable Nickel-Metal Hydride UBATM0002AWSA Battery [MD-MT20H Only]

18. Protect Cushion SPAKZ0522AWZZ

19. Protect Sheet SPAKZ0518AWZZ

20. SER No. Label TLABN0092AWZZ

MD-MT20H

3

2

6

13

12

8

10

9

1

4

14

20

4

11

15

18

1

3

5

19

18

2

7

1

6

20

18

3

5

19

2

– 7 –

–– MEMO ––

MD-MT20H/16E

– 8 –

MD-MT20H/16E

©

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any from or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.

SHARP CORPORATION Communication Systems Group Quality & Reliability Control Center Higashihiroshima, Hiroshima 739-0192, Japan

Printed in Japan

A9906-2368NS•HA•J

SG • SK