LG MD MS722H Service Manual

MD-MS722H/MS721H

SERVICE MANUAL

No. SX887MDMS722H

MD-MS722H
MD-MS721H(BL)

(Illustration: MD-MS722H)

(Illustration: MD-MS721H)

MD-MS721H(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.

• Note for users in UK

Recording and playback of any material may require consent
which SHARP is unable to give. Please refer particularly to the
provisions of Copyright Act 1956, the Dramatic and Musical
Prefomers Protection Act 1956, the Preformers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.

CONTENTS

Page

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

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

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

OPERATION MANUAL .......................................................................................................................................................... 6

DISASSEMBLY...................................................................................................................................................................... 9

INSTALLING THE TOP CABINET ......................................................................................................................................... 9

REMOVING AND REINSTALLING THE MAIN PARTS....................................................................................................... 10

ADJUSTMENT ...................................................................................................................................................................... 11

BLOCK DIAGRAM ............................................................................................................................................................... 27

SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD................................................................................................... 28

NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 35

WAVEFORMS OF CD CIRCUIT.......................................................................................................................................... 36

TROUBLE SHOOTING ........................................................................................................................................................ 37

FUNCTION TABLE OF IC.................................................................................................................................................... 40

PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (MD-MS722H FOR UK ONLY)

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-MS722H/MS721H

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.

CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED
AVOID EXPOSURE TO BEAM .

VARNING - OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRRAR
ÄR URKOPPLADE. STRÅLEN ÄR FARLIG.

ADVARSEL - USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG SIKKERHEDSLÅS
BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.

VARO! AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA
NÄKYMÄTÖN LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEN.

VARNING - OSYNLIG LASERSTRÅLING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN
ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.

ADVARSEL - USYNLIG LASERSTRÅLING VED ÅBNING NÅR SIKKERHEDSAFBRYDERE
ER UDE AF FUNKTION. UNDGÅ UDSETTELSE FOR STRÅLING.

(MS722H Except for

UK/MS721H)

LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

Laser Diode Properties

Material: GaAIAs
Wavelength: 785 nm
Pulse time:

(MS722H For UK)

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

min cycle 1.5S
Repetition

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.

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

Magnet Head

Lasar Beam

Optical pick-up

Main PWB

Disc motor

Figure 2-1 Figure 2-2

Disc cover

– 2 –

Optical Pick-Up

MD-MS722H/MS721H

MD-MS722H

Remote control unit

NAME OF PARTS

1

2

3

1. Synchro Recording Indicator

2. Character/Time Information Indicator

3. Record Indicator

4. Repeat Indicator:

5. Random Indicator

6. Disc Mode Indicator

7. Total Track Number Display

8. Track Number Indicator

9. Battery Indicator:

10. Earphones Socket

11. Display/Volume Shuttle Switch

12. Hold Switch

13. Play/Pause/Fast Reverse/ Fast Forward Shuttle Switch

14. Stop/Power Off/Bass/Play Mode Shuttle Switch

Main unit

1. Monaural Long-Play Mode Indicator

2. Record Indicator

3. Index Indicator

4. Level Meter

5. Repeat Indicator:

6. TOC Indocator

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 Display

17. Jog Dial

18. Record/Track Mark Button

19. Volume/Name Select Buttons: --

20. Display/Lowercase Characters Button

21. Character Button

22. Volume/Name Select Buttons: +

23. Play/Pause Button:

24. Fast Reverse/Fast Forward/Recording Level Control/
Cursor Shuttle Switch:

25. Edit/Auto Mark/Time Mark Button

26. Mode/Insert Button

27. Bass/Delete Button

28. Enter/Fast Play/Synchro Button

29. Handstrap Attachment Eye

30. Stop/Power Off Button: /:OFF

31. Eject Lever

32. Optical/Line Input Socket

33. Microphone Input Socket

10

11

12

11
12

13
14

REC

6

SYNC

TOTAL

789

13
14

12345 6

1516

2019

1817

28

272625 2930313233

21 22

1

RANDOM

23
24

34

4
5

7
8

9

10

34. Hold Switch

35. Battery Case Connection Terminals

36. Earphones Socket

37. 5V DC Input Socket

38. Rechargeable Lithium-lon Battery Compartment

– 4 –

35

36
37
38

MD-MS721H

Remote control unit

1. Synchro Recording Indicator

2. Character/Time Information Indicator

3. Record Indicator

4. Repeat Indicator:

5. Random Indicator

6. Disc Mode Indicator

7. Total Track Number Display

8. Track Number Indicator

9. Battery Indicator:

10. Earphones Socket

11. Display/Volume Shuttle Switch

12. Hold Switch

13. Play/Pause/Fast Reverse/ Fast Forward Shuttle Switch

14. Stop/Power Off/Bass/Play Mode Shuttle Switch

Main unit

1. Monaural Long-Play Mode Indicator

2. Record Indicator

3. Level Meter

4. Repeat Indicator:

5. TOC Indocator

6. Battery Indicator:

7. Random Indicator

8. Track Number Indicator

9. Character/Time Information Indicator

10. Synchro Recording Indicator

11. Disc Mode Indicator

12. Disc Name Indicator

13. Track Name Indicator

14. Remaining Recording Time Indicator

15. Total Track Number Display

10

11

12

10
11

12
13

MD-MS722H/MS721H

2

1
6

SYNC

TOTAL

RANDOM

1

REC

789

13
14

12345

1415

3
4

5

6
7

8
9

16. Mode/Insert Button

17. Record/Track Mark Button

18. Fast Reverse/Recording Level Control/

Cursor Button:

19. Play/Pause Button:

20. Fast Forward/Recording Level Control/

Cursor Button:

21. Display/Lowercase Characters Button

22. Volume/Name Select Buttons: --

23. Volume/Name Select Buttons: +

24. Bass/Delete Button

25. Character Button

26. Enter/Fast Play/Synchro Button

27. Edit/Auto Mark/Time Mark Button

28. Handstrap Attachment Eye

29. Stop/Power Off Button: /:OFF

30. Eject Lever

31. Optical/Line Input Socket

32. Microphone Input Socket

33. Hold Switch

34. Battery Case Connection Terminals

35. Earphones Socket

36. 5V DC Input Socket

37. Rechargeable Lithium-lon Battery Compartment

34

2016

1817

28

272625 29 30313224

21 22 2319

33

35
36
37

– 5 –

MD-MS722H/MS721H

Rechargeable battery power

When the rechargeable battery is used for

the first time or when you want to use it

after a long period of disuse, be sure to

charge it fully.

1

Open the rechargeable battery com-

partment cover.

2

Insert the rechargeable battery.

Insert the side with the arrow first.

3

Close the rechargeable battery com-

partment cover.

4

Plug the AC adaptor into the AC

socket, and then insert the plug on the

AC adaptor lead into the DC IN 5V

socket.

About 4 seconds late r, " " will flash,

and the battery will begin charging.

Battery charging will be complete in 3.0

hours. When the charging is com-

plete, “ ” will go out.

POWER SOURCE

Notes:

After charging has been completed, the

AC adaptor may be left connected.

(For example, when charging at night)

If the rechargeable battery is in the unit,

it will be charged, even whilst operating

the unit. (Float charge)

Do not force open the rechargeable

battery cover too wide.

When the AC adaptor plug is inserted

and a MiniDisc has already been in-

serted, playback may start automati-

cally.

In this case, press the / :OFF button

twice to turn the power off.

This unit can be used with 4 different power sources: a rechargeable battery, an AC

adaptor, a battery case, and a separately available car adaptor (AD-CA20X).

OPEN

OPEN

OPEN

1

OPEN

2

Mark

DC IN

5V

To the DC

IN 5V

socket

Insert

securely,

all the

way in.

MS722H Except for UK/

MS721H: AC 220-230V, 50/60 Hz

MS722H For UK: AC 230-240V,

50/60 Hz

4

Checking the remaining

amount of battery charge

The remaining amount of battery charge is

shown by the battery indicator ( ) dur-

ing operation.

< How to read the battery indicator >

When the battery is completely dis-

charged, the whole battery indicator will

flash. Recharge the battery or replace the

alkaline battery with a new one.

When the battery has run completely out,

“BATT EMPTY” (main unit) and “Lo BATT”

(remote control unit) will appear. Then, the

power will be disconnected automatically.

Notes:

When you are using the unit with a re-

chargeable battery and an alkaline battery

and you want to check the remaining ca-

pacity of the battery, the remaining battery

charge display may not be stable for about

20 seconds after the power is first 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 per-

formed. This is normal.

When the rechargeable battery and the

alkaline battery are used at the same time,

the rechargeable battery is used first, and

then the alkaline battery.

Since the battery indicator shows the re-

maining amount of the particular battery

being used, the number of bars will in-

crease when the unit switches to the alka-

line battery.

CONVENIENT OPERATION OF THE UNIT

Battery indicator

Charging is

needed.

When the battery is

completely charged

When the battery needs charging, it is

impossible to start recording or editing.

RECORDING USING THE OPTICAL DIGITAL CABLE

There are cases where digital

recording may be impossible.

In the following cases digital recording is

impossible, even if you are using digital

cables.

When you attempt to make a new digital

recording from a track that was digitally

recorded on a MiniDisc

● MiniDiscs are designed so that only

first generation digital copies can

made, further digital copies are pre-

vented by the SCMS (Serial Copy Man-

agement System).

Recording

Playback

CD player, MD

player, etc.

Digitally recorded MiniDisc

Digital cable

Recording

Playback

Digital cable

Analogue recording is

possible.

OPERATION MANUAL

– 6 –

MD-MS722H/MS721H

Moisture condensation

In the following cases, condensation

may form inside the unit.

Shortly after turning on a heater.

When the unit is placed in a room

where there is excessive steam or

moisture.

When the unit is moved from a cool

place to a warm place.

When the unit has condensation inside,

the disc signals cannot be read, and the

unit may not function properly.

If this happens, remove the disc.

The condensation should evaporate in

approximately 1 hour. The unit will then

function properly.

TROUBLESHOOTING

If trouble occurs

When this product is subjected to strong

external interference (mechanical shock,

excessive static electricity, abnormal sup-

ply voltage due to lightning, etc.) or if it is

operated incorrectly, it may malfunction. If

such a problem occurs, do the following:

1. Unplug the AC adaptor from the AC

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 au-

thorised SHARP service centre.

Many potential “problems” can be resolved by the owner without calling a service tech-

nician. If something seems to be wrong with this product, check the following before

calling your 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 safety mode?

Has condensation formed inside the unit?

Is the unit being influenced by mechanical shock or by

static electricity?

No sound is heard

from the earphones.

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?

When the operation

buttons are pressed,

the unit does not

respond.

Is the unit in the safety mode?

Is the battery exhausted?

Is the remote control unit plug or the earphone plug

inserted firmly?

Some sounds are

skipped.

Is the battery exhausted?

Is the unit being subjected to excessive vibration?

The MiniDisc cannot

be ejected.

Has the track number or character information been

written on the disc yet?

Is the unit in the recording or editing mode?

Recording and editing

are impossible.

Is the MiniDisc protected against accidental erasure?

Is the unit connected properly to the other equipment?

Is the AC adaptor unplugged or did a power failure

occur whilst recording or editing?

Is the unit in the safety mode?

Is an optical signal being output from the external

equipment?

Read the operation manual for the external equipment.

Even if the maximum recording

time of a MiniDisc has not been

reached, “DISC FULL” or “TOC

FULL” may be displayed.

When the number of tracks used

reaches the limit, regardless of the

remaining recording time, further

recording will be impossible.

(Maximum number of tracks: 254)

If a MiniDisc has been recorded or

edited repeatedly or if a MiniDisc has

scratches on it, it may not be possible

to record the maximum number of

tracks on it.

Even if the number of tracks and

the recording time have not

reached the limit, “DISC FULL” may

be displayed.

If there are scratches on a disc, the

unit will automatically avoid recording

in those areas. The recording time will

be reduced.

Even if several short tracks are

erased, the remaining recording

time may not show an increase.

When the remaining recording time of

a disc is displayed, short tracks less

than 12 seconds long may not be

included in the total.

Two tracks may not be combined in

editing.

For MiniDiscs on which repeated

recording and editing operations were

performed, the COMBINE function

may not work.

The total of the recorded time and

time remaining on a disc may not

add up to the maximum possible

recording time.

A cluster (about 2 seconds) is

normally the minimum unit of

recording. So, even if a track is less

than 2 seconds long, it will use about

2 seconds of space on the disc.

Therefore, the time actually available

for recording may be less than the

remaining time displayed.

If there are scratches on discs, those

sections will be automatically avoided

(no recording will be placed in those

sections). Therefore, the recording

time will be reduced.

When recorded tracks are played

back using the cue and review

operations, some sounds may be

skipped.

For MiniDiscs on which repeated

recording and editing were performed,

some sounds may be skipped whilst

cueing and reviewing.

A track number can be created in

the middle of a track.

If there are scratches or dust on a

MiniDisc, the track numbers following

that track will be increased by one.

MiniDiscs are recorded using a different system than is used for cassette tapes or DAT

recordings. Therefore, the following conditions may be encountered, depending on how

the disc has been recorded or edited. These are due to system limitations, and should

be considered normal.

MINIDISC SYSTEM LIMITATIONS

– 7 –

MD-MS722H/MS721H

( ): Error messages seen on the re-

mote control.

Error messages Meaning Remedy

BATT EMPTY

(Lo BATT)

The battery run down. Charge the rechargeable battery or

replace the alkaline battery (or use

the AC adaptor for power).

BLANK DISC

(BLANK)

Nothing is recorded. Replace the disc with a recorded

disc.

Can't COPY

(Not REC)

No copy can be made because of

the SCMS copyright system.

Record using the analogue cable.

Can't EDIT

A track cannot be edited. Change the stop position of the

track and then try editing it.

Can't REC

(Not REC)

Recording cannot be performed

correctly due to vibration or shock

in the unit.

Re-record or replace it with another

recordable disc.

Can't WRITE Editing is impossible. Check the number of tracks.

DEFECT

(DEFECT)

The disc is scratched. If the sound you hear is not right,

try recording again.

Replace the disc with another

recordable disc.

Din UNLOCK

(UNLOCK)

Poor connection of the digital cable. Connect the digital cable securely.

DISC ERROR

(E-DISC)

The disc is damaged. Reload the disc or replace it.

DISC FULL

The disc is out of recording space. Replace it with another recordable

disc.

HOLD

(HOLD)

The unit is in the safety mode. Return the HOLD switch to its

original position.

LOCKED

LOCK ERROR

The EJECT lever was moved

during recording or editing.

Turn off the power and remove the

MiniDisc.

NO DISC A disc has not been loaded. Load a disc.

PB DISC

PROTECTED

The disc is write protected.

You tried to record on a playback-

only disc.

Move the write protection knob

back to its original position.

Replace it with a recordable disc.

POWER ?

Improper power is being supplied. Use one of the specified power

sources.

SORRY

(SORRY)

Since a track number is currently

being located or written to, the unit

cannot accept your command.

Wait for a while and try the

operation again.

SYSTEM ERR

(E-SYS)

You have come to the conclusion

that the unit is out of order.

To have it repaired, go to the

distributor where you purchased the

unit.

TEMP OVER

(E-TEMP)

The temperature is too high. Turn off the power, and wait for a

while.

TOC ERROR

(E-TOC)

A large portion of the disc has been

damaged.

Replace it with another recorded

disc.

TOC FULL

There is no space left for recording

character information (track names,

disc names, etc.).

Replace it with another recordable

disc.

Tr. Protect

The track has been protected from

being erased.

Edit the track with the device on

which it was recorded.

U TOC ERROR

(E-UTOC)

A large portion of the disc has been

damaged.

There is an error in the recorded

signal.

Replace it with another recorded

disc.

Erase all of the signal errors, and

then try recording again.

? DISC

(?DISC)

A disc which contains data other

than music was played.

There is an error in the signal from

the disc.

A disc which contains non-music

data cannot be played.

Replace it with another recorded

disc.

ERROR MESSAGES

– 8 –

MD-MS722H/MS721H

Do not allow rise of
upper cabinet.

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 ICs.

STEP

REMOVAL

PROCEDURE

1 Bottom Cabinet 1. Battery Cover.........(A1) x1 9-1

2. Screw ..................... (A2) x6

2 Top Cabinet 1. Screw ..................... (B1) x3 9-1

2. Flexble PWB .......... (B2) x2 9-2

3 Main PWB 1. Screw .................... (C1) x2 9-2

2. Flexble PWB ......... (C2) x2

3. Soldering ............... (C3) x4

4 Mechanism Unit

1. Raise the rear part, and remove
in the arrow direction.

(Illustration: MD-MS722H)

FIGURE

9-3

(A2)x2
ø1.4x2mm

Bottom Cabinet

(A2)x1
ø1.4x2.5mm

Center
Cabinet

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

Felt

Main PWB

Pull

Pull

(A2)x1
ø1.4x2mm

Top Cabinet

Figu re 9-1

Pull

Pull

(B1)x2
ø1.4x2mm

(C1)x1
ø1.7x2.5mm

Pull

Pull

(C3)x3

(B1)x1
ø1.4x2mm

(A1)x1

(A2)x2
ø1.4x2mm

(B2)x1

(C1)x1
ø1.7x2.5mm

(B2)x1

Pull

ø1.4x2.5mm

Cares when servicing:

Be sure to use the screw with washer (Part code: LX-BZ0822AFFC,
Distribution code: 124 970 0187). If a screw of different length is used
by mistake, MD ejection may be disabled.

Figure 9-4

INST ALLING THE TOP CABINET

Insert the key flexible PWB
at first into the clearance of
center cabinet.

(C2)x1*
Flexble PWB for
optical pickup

(C2)x1

(C3)x1

Top Cabinet

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 9-2

Mechanism Unit

Figure 9-3

Figure 9-6Figure 9-5

– 9 –

MD-MS722H/MS721H

REMOVING AND REINSTALLING THE MAIN PARTS

Remove the mechanism according to the disassembling meth­ods 1 to 3. (See Page 9.)

(A2)x3

ø1.4x2.8mm

How to remove the spindle motor (See Fig. 10-1.)

1. Remove the solder joint (A1) x 1 of flex PWB.

2. Remove the stop (A2) x 3 pcs. and remove the spindle
motor.

How to remove the lift motor (See Fig. 10-2.)

1. Remove the solder joint (B1) x 2 of slide motor lead wire.

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

3. Remove the screw (B3) x 1, and remove the lift motor.

Note:

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

How to remove the sled motor (See Fig. 10-3.)

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

gear (C2) x 1 pc.

2. Remove the screw (C3) x 2 pc.

3. Remove the screw (C4) x 2, and remove the sled motor.

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. 10-4.)

1. Remove the screw (D1) x1 which connects the magnetic

head to the head relay flex PWB, and remove the soldering
joint (D2) x2 pcs.

Note:

Mount carefully so as not to damage the magnetic head.

(B1)x2
Remove the
solder joint

Lift Motor

Stop Washer

(C1)x1

Spindle Motor

Mecha Flexble PWB
Solder joint
(A1)x1

Figure 10-1

(B3)x1

ø1.4x5.5mm

(B2)x1

ø1.4x1.5mm

Figure 10-2

(C3)x2
ø1.4x1.2mm

MD Mechanism

MD Mechanism

How to reinstall the optical pickup unit
(See Fig. 10-5.)

1. Remove the screws (E1) x 1 pcs.

2. Slowly raise the optical pickup.

(E1)x1
ø1.7x2.5mm

Shaft

Pickup Unit

Figure 10-5

– 10 –

Shaft

Pickup Unit

Shaft

Pickup Unit

Drive Gear

(C2)x1

Sled Motor

(C4)x2
Mecha Flexble PWB
Solder joint

Figure 10-3

Magnetic Head

Solder
joint
(D2)x2

(D1)x1
Ø1.4x1.5mm

Figure 10-4

MD-MS722H/MS721H

Test disc

ADJUSTMENT

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

Type

1 High reflection disc MMD-110 (TEAC Test MD) 88GMMD-110
2 Lowreflection disc MMD-212 (TEAC Test MD) 88GMMD-212
3 Low reflection disc Recording minidisc UDSKM0001AFZZ

Test disc Parts No.

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

Entering the TEST mode

1. Setting at port (in standby state, disc-free state or power nonconnected state)

(1) Set the port as follows.
TEST1 : "Low"
TEST0 : "High"
(2) Press the PLAY button in the standby state (it is allowed to insert the disc or to connect the power supply).
(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.)
(3) Indication of microcomputer version for one second [ 7 0 2 A f X ] (Serial No. 811XXXXX)

[ 9 0 8 A f X ] (Serial No. 812XXXXX~)

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.
(2) EEPROM rewrite-enable area updating, adjustment error setting (so as to adjust all the items when the power supply is turned

on in the normal mode)

(3) Change to standby state

Shipping setting method

Holding down simultaneously the VOLUME-DOWN key and PLAY key 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. MANUAL 1 Mode

4. MANUAL 2 Mode

5. RESULT 1 Mode

6. RESULT 2 Mode

7. TEST-PLAY 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)

• 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).

• 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).

• Continuous playback from the specified address

is performed.

• 1 line, 10 lines or 400 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.

8. TEST-REC Mode

9. NORMAL Mode

10. DIGITAL INPUT Mode

11. ERROR INFORMATION
Mode • Error information is initialized

12. EE-PROM Mode

13. INNER Mode

• 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.

• 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.

• Digital input information is displayed.

• Error information is displayed.

• 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.

– 11 –

MD-MS722H/MS721H

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-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.

3. MANUAL1 Mode

• Adjustment item to be made in AUTO1 mode is performed manually.

• When the VOL UP button is pressed during adjustment, the setting increases, and the new setting is output.

• If the VOL DOWN button is pressed during adjustment, the setting decreases and the new setting is output.

• If the VOLUP/DOWN button is held down, the setting changes continuously with 100 ms cycle.

• If the setting is within the allowable range, the RANDOM display lights.

• When the STOP button is pressed during MANUAL1 MENU or measurement or adjustment, the state is changed to the TEST mode stop
state.

4. MANUAL2 Mode

• Adjustment item to be made in AUTO2 mode is performed manually.

• When the VOL UP button is pressed during adjustment, the setting increases, and the new setting is output.

• If the VOL DOWN button is pressed during adjustment, the setting decreases and the new setting is output.

• If the VOLUP/DOWN button is held down, the setting changes continuously with 100 ms cycle.

• If the setting is within the allowable range, the RANDOM display lights.

• When the STOP button is pressed during MANUAL2 MENU or measurement or adjustment, the state is changed to the TEST mode stop
state.

• When the PLAY button is pressed in B-ATT set state, the mode is changed to the continuous playback mode.

• As for operation during continuous playback refer to "TEST-PLAY mode explanation".

5. RESULT1 Mode

• The measurement value and set value of adjustment items for AUTO1 and MANUAL 1 are displayed.

• If the VOL UP button is pressed during setting indication, the setting increases. If the VOL DOWN button is pressed, the setting reduces.

And then the new setting is stored in the RAM.

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

• If the STOP button is pressed during RESULT1 menu or measurement value indication or set value indication, the state is changed to the
TEST mode STOOP state.

6. RESULT2 Mode

• The measurement value and set value of adjustment items for AUTO2 and MANUAL 2 are displayed.

• If the VOL UP button is pressed during setting indication, the setting increases. If the VOL DOWN button is pressed, the setting reduces.

And then the new setting is stored in the RAM.

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

• If the STOP button is pressed during RESULT2 menu or measurement value indication or set value indication, the state is changed to the
TEST mode STOOP state.

7. 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 mode, the address changes as follows.

• Whenever the BASS key is pressed in the TEST-PLAY mode, the digit which is changed by the SKIP UP/DOWN button changes as follows.

• When the SKIP UP button is pressed in the TEST-PLAY mode, 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-PLAY mode, 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.

• 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.

0050 — 03C0 — 0700 — 08A0 — 0050 —

005

0 — 0050 — 0050 — 0050 — 0050 —

1 — 10 — 384 — 1

– 12 –

MD-MS722H/MS721H

•Whenever the DISP button is pressed in the continuous playback mode, the indication changes as follows.
* Pit section

Continuous playback (SUBQ address indication) [ S Q ]

Continuous playback (C1 error indication) [ C E ]

Continuous playback (SUBQ address indication) [ S Q ]

* Groove section

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 ]

8. 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 mode, the address changes as follows.

0050 — 03C0 — 0700 — 08A0 — 0050 —

• Whenever the BASS button is pressed in the TEST-REC mode, the digit which is changed by the SKIP UP/DOWN button changes as
follows.

0050 — 0050 — 0050 — 0050 — 0050 —

• When the SKIP UP button s pressed in the TEST-REC mode, 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, 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.

• When the VOL UP/DOWN button is pressed in the TEST-REC mode or continuous record mode, the laser record power changes.
(Servo gain changes also according to record power.)
* After the laser record power is indicated for one second, the address indication is restored.

• : Address

• : Laser power cord

• Operation is disabled if the premastered disc or disc is in miserase-protected state.

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|

|

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[ R P W ]

9. 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.

: Address (Sector section)

10. Digital input display Mode (Din Mon)

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

• In case of analog input or digital input unlocking the indication data is _.

11. 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.

– 13 –

MD-MS722H/MS721H

13. INNER Mode

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

• : Address

EEPROM (IC402) writing procedure

1. Procedure to replace EE-PROM 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/Lower-case Character button, Enter/Synchro button and Play/Pause button to start the test mode.
(5) Version display

[ V e r . ]

Destination
EEPROM version (C ~ Z)

Microcomputer ROM version
(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).

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

• When data is written into EEPROM, the value shown adove is recorded at the specified address.

[2] Temperature measurement value correction table

Ambient temperature Temperature correction

+ 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

[3] Power IC VREF feed control output

• After automatic adjustment the temperature code is read. If it is within the following range, OK.

Ambient temperature Temperature correction

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

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

Center temperature

Center temperature

– 14 –

EEPROM DATA LIST (EEPROM version f)

TEMP setting

Item display Set values

T M _ _ Calculate values

Fucus setting

Item display Set values

F G _ _ 6 3 H
F F 1 _ 7 0 H
F F 2 _ E 8 H
F Z H _ E D H
F L n _ 0 9 H
D J G _ 1 4 H
F L V _ 2 0 H
W T f _ 2 0 H
F S S _ A A H

Tracking setting

Item display Set values

T G _ _ 2 6 H
T F 1 _ 7 0 H
T F 2 _ E 0 H
T F S _ 0 0 H
T B o _ 2 B H
T B t _ 1 4 H
T K o _ 2 B H
T K t _ 1 2 H
T D o _ 6 7 H
T D t _ 3 4 H
S C o _ 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 0 H
K 1 0 _ 6 5 H

Spindle setting

Item display Set values

S P G _ 1 4 H
S P i _ A A H
S P m _ 7 9 H
S P o _ 4 F H
S P 1 _ 1 0 H
S P 2 _ 6 0 H
S P 3 _ F 2 H
S P 4 _ F 2 H
S P 5 _ 1 0 H
S P D _ 6 1 H
S P K _ 8 B H

BASS setting

Item display Set values

B S 1 _ 0 0 H
B S 2 _ 2 D H
B S 3 _ 4 B H

MD-MS722H/MS721H

Sled setting

Item display Set values

S L G _ 6 D H
S L 2 _ 2 0 H
S L M _ 4 F H
S L V _ 3 6 H
S K k _ 4 3 H
S K t _ 5 4 H
S K m _ 4 D H
W T m _ 2 4 H
M V 1 _ 4 A H
M V 2 _ A A H
S R V _ 0 0 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
G S O _ 0 0 H

Control setting

Item display Set values

C T 0 _ 0 5 H
C T 1 _ 9 5 H
C T 2 _ 4 0 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 C _ 1 2 H
P W L _ 6 6 H
D R 1 _ 4 9 H
D R 2 _ 4 9 H
I N 1 _ D 4 H
I N 2 _ 7 1 H
I N H _ 6 4 H
D R H _ 7 4 H
P L E _ 9 6 H
R C E _ 5 4 H
E L T _ 7 2 H
S L T _ 7 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

– 15 –

MD-MS722H/MS721H

: Test Mode STOP

: Pre-autoadjustment menu

: ATT autoadjustment 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

SKIP UP SKIP DOWN

SKIP UP 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

SKIP UP SKIP DOWN

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 UP

SKIP DOWN

SKIP DOWN

SKIP UP

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

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

menu is executed.

: Preadjustment 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

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] key 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

– 16 –

MD-MS722H/MS721H

: 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

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] key 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)

: Pre-Manual Adjustment menu

: Temperature code display

$ $ : Temperature code

: A signal offset (AINO) tentative measurement

: Measurement value

: B signal offset (BINO) tentative measurement

: Measurement value

: E signal offset (EINO) tentative measurement

: Measurement value

: F signal offset (FINO) tentative measurement

: Measurement value

: Laser On (Play Power)

: RF side focus gain coarse adjustment

: Gain setting

: A-ATT (focus) tentative setting

: ATT setting

: B-ATT (focus) tentative setting

: ATT setting

: RF side pit section tracking gain adjustment

: Gain setting

: Pit section adjustment COUT level setting

: COUT level setting

RF side groove section tracking gain adjustment

: Gain setting

: Groove section adjustment COUT level setting

: COUT level setting

: RF side TCRS gain adjustment

: Gain setting

: E-ATT (tracking) initial setting

: ATT setting

: F-ATT (tracking) initial setting

: ATT setting

PLAY

M A N U 1

Pre-Manual Adjustment

T M P $ $

A h

SKIP UP SKIP DOWN

B h

SKIP UP SKIP DOWN

E h

SKIP UP SKIP DOWN

F h

SKIP UP SKIP DOWN

L O N P

SKIP UP SKIP DOWN

R F g

SKIP UP SKIP DOWN

S a

SKIP UP SKIP DOWN

S b

SKIP UP SKIP DOWN

P T G

SKIP UP SKIP DOWN

P C H

SKIP UP SKIP DOWN

G T G

SKIP UP SKIP DOWN

G C H

SKIP UP SKIP DOWN

R C G

SKIP UP SKIP DOWN

S E

SKIP UP SKIP DOWN

S F

SKIP UP SKIP DOWN

Continued to

the next page

SKIP UP SKIP DOWN

– 17 –

MD-MS722H/MS721H

: RF side focus gain minor adjustment

: Gain setting

: A-ATT (focus) initial setting

: ATT setting

: B-ATT (focus) initial setting

: ATT setting

: S gain "High" A signal offset (AINO) measurement

: Measurement value

: S gain "High" B signal offset (BINO) measurement

: Measurement value

: S gain "High" E signal offset (EINO) measurement

: Measurement value

: S gain "High" F signal offset (FINO) measurement

: Measurement value

TCRS signal offset (TCRSO) measurement

: ATT setting

: S gain "Low" A signal offset (AINO) measurement

: Measurement value

: S gain "Low" B signal offset (BINO) measurement

: Measurement value

: S gain "Low" E signal offset (EINO) measurement

: Measurement value

: S gain "Low" F signal offset (FINO) measurement

: Measurement value

Continued from the

preceding page

R F G

SKIP UP SKIP DOWN

S A

SKIP UP SKIP DOWN

S B

SKIP UP SKIP DOWN

A H

SKIP UP SKIP DOWN

B H

SKIP UP SKIP DOWN

E H

SKIP UP SKIP DOWN

F H

SKIP UP SKIP DOWN

T H

SKIP UP SKIP DOWN

A L

SKIP UP SKIP DOWN

B L

SKIP UP SKIP DOWN

E L

SKIP UP SKIP DOWN

F L

SKIP UP SKIP DOWN

: Temperature code displayATT manual adjustment menu

: Temperature code display

$ $ : Temperature code

: Laser ON (Play Power)

: Pit section E-ATT (tracking) setting

: ATT setting

: Pit section E-ATT (tracking) setting

: ATT setting

: High reflection: A-ATT (focus) setting

: Low reflection: A-ATT (focus) setting

: ATT setting

: TCRS ATT setting

: ATT setting

:Groove section E-ATT (tracking) setting

: ATT setting

:Groove section F-ATT (tracking) setting

: ATT setting

: Low reflection: A-ATT (focus) setting

: ATT setting

: Low reflection: B-ATT (focus) setting

: ATT setting

PLAY

M A N U 2

ATT Manual Adjustment

T M P $ $

L O N P

SKIP UP SKIP DOWN

P E

SKIP UP SKIP DOWN

P F

SKIP UP SKIP DOWN

H A

L a

SKIP UP SKIP DOWN

: High reflection: B-ATT (focus) setting

: Low reflection: B-ATT (focus) setting

: ATT setting

H B

L b

SKIP UP SKIP DOWN

G C

SKIP UP SKIP DOWN

G E

SKIP UP SKIP DOWN

G F

SKIP UP SKIP DOWN

L A

SKIP UP SKIP DOWN

L B

SKIP UP SKIP DOWN

– 18 –

MD-MS722H/MS721H

: Pre-Adjustment Value Check menu

: S gain "High" A signal offset measurement value (setting)

: S gain "High" B signal offset measurement value (setting)

: S gain "High" E signal offset measurement value (setting)

: S gain "High" F signal offset measurement value (setting)

: S gain "Low" A signal offset measurement value (setting)

: S gain "Low" B signal offset measurement value (setting)

: S gain "Low" E signal offset measurement value (setting)

: S gain "Low" F signal offset measurement value (setting)

: TCRS signal offset measurement value

: RF side pit section tracking gain setting

: RF side groove section tracking gain setting

: RF side TCR gain setting

: RF side focus gain setting

: Pit section adjustment COUT level setting

: Groove section adjustment COUT level setting

: A-ATT (focus) initial setting

PLAY

R S L T 1

Pre-Adjustment Value Check

A H

B H

SKIP UP SKIP DOWN

E H

SKIP UP SKIP DOWN

F H

SKIP UP SKIP DOWN

A L

SKIP UP SKIP DOWN

B L

SKIP UP SKIP DOWN

E L

SKIP UP SKIP DOWN

F L

SKIP UP SKIP DOWN

T H

SKIP UP SKIP DOWN

P T G

SKIP UP SKIP DOWN

G T G

SKIP UP SKIP DOWN

R C G

SKIP UP SKIP DOWN

R F G

SKIP UP SKIP DOWN

P C H

SKIP UP SKIP DOWN

G C H

SKIP UP SKIP DOWN

S A

SKIP UP SKIP DOWN

Continued to

the next page

SKIP UP SKIP DOWN

: B-ATT (focus) initial setting

: E-ATT (tracking) initial setting

: F-ATT (tracking) initial setting

Continued from

the preceding page

S B

SKIP UP SKIP DOWN

S E

SKIP UP SKIP DOWN

S F

SKIP UP SKIP DOWN

: ATT Setting Check

: Pit section E-ATT (tracking) setting

: Pit section F-ATT (tracking) setting

: Groove section E-ATT (tracking) setting

: Groove section F-ATT (tracking) setting

: High-reflection A-ATT (focus) setting

: High-reflection B-ATT (focus) setting

: Low-reflection A-ATT (focus) setting

: Low-reflection B-ATT (focus) setting

: TCRS-ATT setting

PLAY

R S L T 2

ATT Setting Check

P E

P F

SKIP UP SKIP DOWN

G E

SKIP UP SKIP DOWN

G F

SKIP UP SKIP DOWN

H A

SKIP UP SKIP DOWN

H B

SKIP UP SKIP DOWN

L A

SKIP UP SKIP DOWN

L B

SKIP UP SKIP DOWN

G C

SKIP UP SKIP DOWN

– 19 –

MD-MS722H/MS721H

: 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] key 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] key is pressed.

0 0 5 0

H

(initial value) 0 3 C 0

H

0 7 0 0

H

0 8 A 0

H

A d 0 0 5 0

A d 0 3 C 0

DISP

DISP

A d 0 7 9 0

DISP

DISP

A d 0 8 A 0

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

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

A d 0 0 5 0

A d 0 0 5 0

BASS

BASS

A d 0 0 5 0

BASS

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

the [BASS] key is pressed.

1 (initial value) 10 384

1 T R

1 0 T R

BASS

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 5 0

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] key is pressed

* When the [SKIP UP] key 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]key 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).

: Continuous record menu

PLAY

T R E C

Continuous Rrecord

A P # # # #

* When the [STOP] key 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] key 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 5 0

PLAY

A P # # # #

• Continuous record playback from any address

A d 0 0 5 0

0 0 5 0

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] key is pressed.

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

the [SKIP UP/DOWN] key is pressed.

* In the continuous record state and start address set state the record laser power changes in the

range of "0h to Fh" when the [VOL UP/DOWN] key is pressed.

A d 0 0 5 0

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

A d 0 0 5 0

BASS

A d 0 0 5 0

BASS

BASS

– 20 –

MD-MS722H/MS721H

: 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] key 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] key is pressed in specific menu, the "TEST MODE STOP" state is set.

: Digital input single monitor menu

: FS code, C bit data display

: Address

: Control code

: Category code

PLAY

D i n M o n

Digital Input Signal Monitor

C

: U bit 1 data display

: TNO

: INDEX

SKIP UP

U 1

SKIP UP

SKIP DOWN

SKIP DOWN

: U bit 2 data display

: TIME (min.)

: TIME (sec.)

U 2

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

: 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] key is pressed in specific menu, the "TEST MODE STOP" state is set.

– 21 –

MD-MS722H/MS721H

: 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] key is pressed in specific menu, the "TEST MODE STOP" state is set.

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

* When the [DISP] key 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] key is pressed.

(The upper limit varies depending on the items)

: 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

SKIP UP SKIP DOWN

F L V

W T f

SKIP UP SKIP DOWN

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

* When the [DISP] key 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] key is pressed.

(The upper limit varies depending on the items)

F F S

SKIP UP SKIP DOWN

– 22 –

MD-MS722H/MS721H

: 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] key is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] key 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]

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

S C o

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 v

SKIP UP SKIP DOWN

J P i

SKIP UP SKIP DOWN

K 1 0

SKIP UP SKIP DOWN

: 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] key is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] key 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] key is pressed.

(The upper limit varies depending on the items)

S P K

SKIP UP SKIP DOWN

– 23 –

MD-MS722H/MS721H

: Slide setting menu

PLAY

S l e d

Slide 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] key is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] key 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] key is pressed.

(The upper limit varies depending on the items)

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 setting

: setting

§ § : 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] key is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] key 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] key is pressed.

: 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] key is pressed in specific menu, the "TEST MODE STOP" state is set.

* When the [DISP] key 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]

key is pressed.

1st digit (initial value) 2nd digit

P-MODE

P-MODE

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

key is pressed.

– 24 –

MD-MS722H/MS721H

: 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

G S O

SKIP UP SKIP DOWN

D Q R

SKIP UP SKIP DOWN

G Q 2

SKIP UP SKIP DOWN

G S G

SKIP UP SKIP DOWN

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

* When the [DISP] key 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] key is pressed.

1st digit (initial value) 2nd digit

P-MODE

P-MODE

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

key is pressed.

: 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 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 H

SKIP UP SKIP DOWN

Continued to

the next page

SKIP UP SKIP DOWN

– 25 –

MD-MS722H/MS721H

Continued from

the preceding page

D R H

SKIP UP SKIP DOWN

P L E

SKIP UP SKIP DOWN

SKIP UP SKIP DOWN

SKIP UP SKIP DOWN

R C E

E L T

S L T

SKIP UP SKIP DOWN

S P M

SKIP UP SKIP DOWN

SKIP UP SKIP DOWN

SKIP UP SKIP DOWN

M S L

U S 0

SKIP UP SKIP DOWN

SKIP UP SKIP DOWN

U S 1

U S 2

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

* When the [DISP] key 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]

key is pressed.

1st digit (initial value) 2nd digit

P-MODE

P-MODE

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

[VOL UP/DOWN] key is pressed.

– 26 –

MD-MS722H/MS721H

IC651

MOTOR DRIVER

LB1930M

VCC

IC351

HEAD DRIVER

74ACT02T

VCC VEE

VCC VEE

BATTERY CASE

(BOOSTER CIRCUIT

BUILT-IN)

RECHARGEABLE

BATTERY

M903

LIFT MOTOR

IC850

POWER DRIVE

IR3M09N

IC820

POWER DRIVE

IR3M09N

IC501

AD/DA

CONVERTER

AK4519VF

M902

SLED MOTOR

IC101

RF SIGNAL

PROCESSOR

IR3R55

IC771

TK71225M 2.5V

REGULATOR

IC200

2V REGULATOR

62FP2002

IC401

SYSTEM

MICROCOMPUTER

IX2772AF

RIPPLE

FILTER

IC871

TK71345M

4.5V REGULATOR

OPIC

LASER

PICK

HEAD

M901

SPINDLE

MOTOR

IC201

ENDEC LSI

LR37811

+2.8

+2.5

T F

+2.5

+2.5+2.5

+2.8

+2.8

VDD

+2.0

+2.8

+2.5

–2.5

AVCC

+2.5

+6~8

+2.8

J703

REMOTE

CONTORL

J801

DC IN

(4~5.5V)

(2.9~4.1V)

(3.4V)

VCC

VCC

+2.35

DISPLAY UNIT

OPERATION UNIT

IC901

3-PHASE BRUSHLESS

DRIVER

BA6965AF

IC703

AUDIO AMP

IR3R54N

IC701

AUDIO AMP

IR3R54N

IC601

PWM DRIVER

17A39TD

VMVCC

IC402

EEPROM

S29L294A

+4.5

VCC

VS

IC202

16BIT D-RAM

IX2723AF

+2.5

+2.5

+4.5

OPTICAL IN

UNIT

J701

DIGITAL INPUT

J701

LINE INPUT

J702

MIC IN

(READY FOR

PLUG-IN POWER)

J703

HEAD PHONES

LINE

1,6

19,20

17 13

24,26

29,31

6,8

13,14

24,42

25-30,40

3,5-9,11

26-30,

32-37,

39-46

2-5,

7-12,

14-23

14

8,11

4

1

7,9 3,4

57,66

55,58

59,

70-74

7-12,

15,17

1,12

3,6

19,20

5,6

20 17

20

17

10,12

5,6

22,24

18,19

Q721

8

8

13

1-4

35

2,15-17,

19-22

1-3

1-3

14-16

69,

72,

73,

83,

84

9,

10,

13

42,48

2

17-24

50

4

5

12

333

12

2

3

4

5

82-84,86

89-100

52,53

2

3

4

1,20-30,

76,93-95

SERIES

REGULATOR

OVER VOLTAGE,

REVERSE-CONNECTION

PROTECTION CIRCUIT

Figure 27 BLOCK DIAGRAM

– 27 –

MD-MS722H/MS721H

S

R

3

4
2

2

M

9

7

EXTAL

EFMO

DSPDAT

P29 P30

P28

MAIN PWB-A

CN101

PWB

M901

M902

M

M

TP101

A

TP666

16

SW902

DISC PROTECT

+
–

PLAYBACK SIGNAL
RECORD SIGNAL

TP110

TP108

TP109

TP103

TP102

TP106

TP105

10

4 3 2 1

8

9

6

5

7

10

4 3 2 1

8

9

6

5

7

B

C357

0.1

TP665

15

COM
W
U
V

2SK2911

COM

CVCC

Q354

2SK2911

C351

47P(CH)

Q352

TP664

TP663

14

13

SW901

DISC IN

VCC

+B

TP662

12

DGND

DGND

D352

SB0209CP

SB0209CP

TP661

TP660

11

10

D351

RF2

LDON

LDVAR

74ACT02T

HEAD DRIVER

8
9

10
11
12
13

VCC

14

TP659

TP658

TP657

8

9

7

HEAD

TP111

TP116

TP117

TP114

TP115

13

11

12

15

14

16

17

13

11

12

15

14

16

17

F

E

RF4

RF3

VCC

MP/R

AGND

OPIC

PICKUP UNIT

IC351

GND

7
6
5
4
3
2
1

C354

0.1
C353
10/6.3

Q353

2SK2909

C361

0.039

R361

15

Q351

2SK2909

R922
100K

INNSW

PDCNT

330

R921

TP656

TP655

TP654

TP653

TP652

TP651

4 3 2 1

6

5

1 16

+ -

M

M903

LIFT

MOTOR

GP1S93K

PH901

TP120

TP121

TP118

TP119

TP122

21

18

22

19

20

21

18

22

19

20

T–

F–

F+

T+

RF1

4.7

R903

R351

C903

TP351

+B

CN601

R905
100K

330

3.3

C103

C102

1

C104

0.027
R105

390K

C161

1
2
3
4

1

5

TP144

6
7
8
9

10
11
12

Q101

2SA17457

1

C165

0.033
F–
F+
T+
T–

R909

10K

11

FG

12

BRK–

13

BRK+

14

STBY

270K

R906

15

RIB

16

VCC
VM

17
18

TP901

19

WOUT
VOUT

20

BA6965AF

3-PHASE

BRUSH LEESS

DRIVER

C911

0.1

R403

1K

56K

R601

TP601

1

3.3

C609

C608

A

B

C

FLEXIBLE

PWB

D

E

F

FLEXIBLE

G

SPINDLE MOTOR

SLED MOTOR

H

SPINDLE/SLED/LIFT
MOTOR ASSY UNIT

• NOTES ON SCHEMATIC DIAGRAM can be found on page 35.

48
ROUT
RF1

RF2

and
RF3

SW
RF4

REFI
REFO
RFADD
TCGI
AIN
BIN
EIN
FIN

13

IC901

1

C610

R

C902

0.01

0.033

BIAS

CSL2
CSL1

UOUT

C112

47

GOUT

14

R154

1.2K

GND

CST
COM

WIN

VIN

UIN

RF

DCNT1

L609
47µH

L610

47µH

L608

100µH

SLDRR
SLDRF
SPDRF

C111

0.0033
C110

CK112

46

45

EFM

TTR

AGC

EFMAGI

DIFF
DIFF

IC101

IR3R55

RF SIGNAL,

PROSESSOR

BIAS

STBY

DISC

AVCC

16

15

CK101

CK102

R161

1.2K

R908
100K

10

C910 0.033

9

8

7

6

5
4
3
2
1

R902

R404
100K

X176KO

0.22

44

17

C909 0.033
C908 0.22

C905 0.0022
C906 0.0022
C907 0.0022

1

C107

C109

0.012

1/16

NC

43

42

41 40 39 38 37

ADAGC

EFMO

EFMI

AGND

AVCC

ADIPI

RF2-1

ADAG

ADIPO

EFMAGC

LOGIC

SGAIN

AGND

19

18

CK103

C130

0.1

R907
180K

R901

DISCPR

MOTOR DRIVER

PWM DRIVER

AGND

1

CLK

2

PS

3

OE

4

VD1

5

FO1

6

PGND

7

RO1

8

VD1

9

VD2

10

RO2

11

PGND

12

FO2

13

VD2

14

RI1

15

FI1

16

FI2

17

RI2

18 19

ADIP
AGC

DGND

DTEMP

20

21

TP145

1

33K

R904

SPIN

IC651

LB1930M

IC601

17A39TD

PGND

PGND

LATCH

CK104

HDON

6
7
8
9

1

GND
VD3
FO3

RO3
VD3
VD4
RO4

FO4
VD4

RI3

RI4

ADLPFO

22KO

22KI

WBO

HPFLPF

TCGO

AOUT
BOUT
EOUT

FOUT

CLOCK

DATA

DVCC

24

23

22

TP151

CK106

AUDATA

AUSCLK

RFLAT

TEMP
LDON

LDVAR

OPICGA

G

5

G
I2

4

O2

3

I1

2

O1

VCC

1

0

+B

36

VG

35

VC
LG

34
33
32
31
30
29
28
27
26
25
24
23
22

FI3

21

FI4

20

C106

+B

0.22

36
35
34
33
32
31
30
29
28
27
26
25

270P(CH)

C172

+B

+B

LDCNT2

TP602

C622

FODRR
FODRF
TRDRF
TRDRR

NC
NC

CK109
CK108

CK107
TP133
TP132
TP131
TP130

C121

270P(CH)

C122

C123
390P

C124
390P

L171
10µH

C171

33/6.3

33/6.3

EFMO

SPDRR

LDCNT1

1

C651

0.1
L604

47µH
L603

47µH
L602

47µH
L601
47µH

R106

56K

+B

L651

0.47µH

C601

R101

22K

TP487

+B

1

R104

22K

F+
F–

T–

T+

C602

1

+B

TP139

22K

R103

22K

R102

TP100

C603

1

C204

0.47

TP209
TP210

CK201
CK202
CK203

FOK

CK204

SENSE

CK205

CIN

MCCK
DINT

R204

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

TP610

C600

0.1

C605

C604

1

CK206

1K

22/6.3

TP211

C203

C422
10/6.3

TP202

L204

R207

680

TP208

76
77
78

FEMON

DADATA

79

SBSY

80

SFSY

81

FOK

82

SENSE

83

COUT

84

MCCK

85

DINTX

86

VDD1

87

0.1
DGND

88

RSTX

89

SYSD0

90

SYSD1

91

SYSD2

92

SYSD3

93

SYSD4

94

SYSD5

95

SYSD6

96
97
98
99
100

AVCC

EFMMON

TP201

R422
100K

L600

2.2

CK207

BCLK

LRCK

DFCK

DGND

ADDATA

TOTMON

76

TEMON

77

SBCK

78

SBO

79

SYSD7

97

SYWRX

98
99

SYRDX

100

SYRS

EIN

AIN

AGND

TCG

EFMI

4 3 2 1

6

5

7

0.1

C207

RCAULT
MCPGIN

INPGIN
INPGCK
RCPCNT2

R401

100K

OPICGA

ELLVL

XL201

33.8688MHz

TP204

1M

R222

C212

8P(CH)

X1I

DIN

X1O

VDD1

VDD3

DGND

DOUT

IC201

LR37811

ENDEC LSI

BIN

FIN

TEST0

WBI

VBAT

VDD1

DGND

10 11 12 13 14 15 16 17 18 19 20

8

9

C205

0.1
R206

TP206

270K

L100

10µH

C100

R205

680K

10/6.3

SYD7

SYD5

SYD4

SYD6

SYD2

SYD3

26
27
28

SYD6

29

SYD7

30

VSS

31

RCLAT

32

MCPGI

33

INPGI

34

INPGCK

35

RCPCNT

36

TP416

TEST1

37

TEST0

38

TP417

JPNP

39

R402

VCC

40

100K

RCLED

41

ELLVL

42
43

LDON

LDON

44

OPICGA

45

RFLAT

RFLAT

46

RACLK

47
48
49
50

51 52 53

AUDATA

AUSCLK

PBAULT

ELON

R

C211

5P(CH)

LDCNT1

LDCNT2

56

58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75

57

VXI

VPD

DCNT1

EMPH1

ADPON

DAPON

LDCNT1

LDCNT2

OPTCNT

RAD0

50

EFMO

RAD1

49

PLCK

RAWEX

48

ACRCER

RARASX

47

TCRS

RAA9
RAD3
RAD2

RACASX

DGND

RAOEX

RAA8
RAA7
RAA6

RAA0

29

RAA5

RAA1

28

RAA4

RAA2

27

VDD2

26

RAA3

RAA10

SLDRR

SLDRF

TRDRR

TRDRF

X176KO

TEST2

FODRF

FODRR

TEST1

TP207

X176KO

SYD1

SYD0

SYD1

SYD2

PBLAT

REC

TP412

PBMUTE

SW402
HOLD

SPDRF

21

23 24

22

25

SPDRF

SLDRR

SLDRF

TRDRR

TRDRF

FODRR

FODRF

TP413

SYRD

SYWR

PCNT1

PHOLD

SYRS

R414

1K

22 23 24 25

VSS

SYD0

EEPK

SYRS

SYRD

SYWR

PCNT1

PHOLD

SYD3

26

SYD4

27

SYD5

28

IX2772AF

SYSTEM MICROCO

ELON

48
49

VSS

50

RADAT

PBOPON

KHOLD

RPLAY

INNSW

WDTOVF

MD1

MD0

BUZOUT

55 56 57 58 59 60 61 62 63 64 65 66 6

54

INNSW

TP404

TP403

BEEP

10K

R407

R408
100K

C431

0.47

TP212

51 52 53 54 55

50

CK22

49

TP20

48

X700KO

CK22

47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26

SPDRR
VCCENDEC

C201

1/16

L201
22µH

SPDRR

DCNT1

S
E

R413

1K

TP407

1

TP408

2

R412

3

10K

1K

4

TP409

R415

DSPSTB

DSPSCK

10 11 12 13 14 15 16 17 18 19 20 21

EEPD

EPCS

DSPSTB

DSPSCK

IC401

XTAL

RESET

VCC

µSTBY

NMI

MD2

TP400

XL401

D431

1SS361

1
R431
330K

2

DSPDAT

1

23456

Figure 28 SCHEMATIC DIAGRAM (1/4)

– 28 –

P28

P

W

8
1

C
0

U

U

T
C
A

MD-MS722H/MS721H

P29 P30

DADATA
ADDATA

24
23
22
21
20

IC202

IX2723AF

DFCK
BCLK
LRCK
DIN
ADPON
DAPON
OPTCNT

EMPH1

+B

TP139

6

TP211

C204

0.47

TP209
TP210

TP100

CK201
CK202
CK203

FOK

CK204

SENSE

CK205

CIN
MCCK

DINT

R204
XRT
SYD0
SYD1
SYD2
SYD3
SYD4
SYD5
SYD6
SYD7
SYWR
SYRD
SYRS

CK206

1K

C203

0.1

R104

22K

22K

R103

22K

01

R102

2K

487

B

TP201

R207

680

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

SBSY
SFSY
FOK
SENSE
COUT
MCCK
DINTX
VDD1
DGND
RSTX
SYSD0
SYSD1
SYSD2
SYSD3
SYSD4
SYSD5
SYSD6

TP208

FEMON

DADATA

ADDATA

AVCC

EFMI

EFMMON

4 3 2 1

TP202

DFCK

AGND

5

C207

BCLK

AIN

6

0.1

L204

CK207

LRCK

DGND

TOTMON

76

TEMON

77

SBCK

78

SBO

79

SYSD7

97

SYWRX

98
99

SYRDX

100

SYRS

EIN

TCG

8

7

XL201

33.8688MHz

TP204

1M

R222

C212

8P(CH)

X1I

VXI

DIN

VPD

X1O

VDD1

VDD3

DGND

DOUT

IC201

LR37811

ENDEC LSI

BIN

FIN

TEST2

TEST0

TEST1

WBI

VBAT

VDD1

DGND

10 11 12 13 14 15 16 17 18 19 20

9

C205

0.1
R206

TP206

270K

L100
10µH

C100

R205

680K

10/6.3

C211

5P(CH)

56

58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75

57

ADPON

DAPON

OPTCNT

50

EFMO

49

PLCK

48

ACRCER

47

TCRS

RAA0

29

RAA1

28

RAA2

27
26

RAA3

X176KO

FODRF

FODRR

TP207

TRDRF

FODRR

FODRF

X176KO

LDCNT1

LDCNT2

DCNT1

EMPH1

LDCNT2
RAD0

RAD1

RAWEX

RARASX

RAA9
RAD3
RAD2

RACASX

DGND

RAOEX

RAA8
RAA7
RAA6
RAA5
RAA4
VDD2

RAA10

SLDRR

SLDRF

TRDRR

TRDRF

21

23 24

22

SPDRF

SLDRR

SLDRF

TRDRR

TP212

51 52 53 54 55

50
49
48

X700KO

LDCNT1

47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26

SPDRR

SPDRF

25

VCCENDEC

C201

SPDRR

CK224
TP203
CK222

1/16

L201
22µH

EFMO

TP205

1

VCC

2

I/O1

3

I/O2

4

WE

5

RAS

6

A10

7

A0

8
9

A1

10

A2

11

A3

12

VCC

16BIT D-RAM

VCCDRAM

TP200

C202

47/6.3

L202
100µH

VCC2R5V

GND

GND

I/O4
I/O3
CAS

OE

A9

19

A8

18

A7

17

A6

16

A5

15
14

A4

13

DCNT1

IC402

R413

1K

PHOLD

R414

1K

1K

TP409

R415

DSPSCK

EEPD

EEPK

EPCS

PHOLD

IC401

IX2772AF

INNSW

RESET

MD2

WDTOVF

TP400

TP403

D431

1SS361

R431

C431

330K

0.47

TP407

TP408

R412

10K

DSPSTB

10 11 12 13 14 15 16 17 18 19 20 21

DSPSCK

VCC

µSTBY

NMI

XL401

S29L294A
EE-PROM

R411
100K

1

VCC

CS

2

SK
DO

3

PRTC

DI

GND

4

DSPDAT

8

9

7

RMDAT

DSPSTB

DSPDAT

100
99
98

XTAL

VSS

EXTAL

HSTOP

IC431

S80820LN

RESET

1

OUT

VSS

VDD

8
7

NC

TP411

6

TP410

5

PDCNT

DISCPR

4 3 2 1

6

5

VSS

PDCNT

DISCPR

EJSW

CKSTP

HDON

PCNT2

XRST

VCC

SENSE

DCNT1M

SWPUP

MCMON

START

AVSS

LDVAR

TEMP
HKEY2
HKEY1

RKEY

PLVINN
PLVDCI

PLVDRY

EMPH0

(JOG1)

(JOG0)

STOP

PLAY

EMPH0

4
3 2

SPIN

SPIN

DISCIN

FOK

VSS

Vref
AVCC
DINT

CIN

100

CIN

99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76

22K

R426

1
2
3

GND

NAND GATE

HDON

R406
100K

XRT

FOK

SENSE

TP415

TP401

C401

0.1

22K

R425

TP402

22K

R423

RKEY

RESET

VCC

5
4

IC404

7SH00FU

EJECT

SW401

3
2

PCNT2
TP406
R405

10K

START

LDVAR

TEMP
HKEY2
HKEY1

INN
DCI

DRY

22K

R424

JOG1

JOG0

4

1

TP405

DINT

TP414

RDATA

+B

C200
1

IC200

62FP2002

2V REGULATOR

1

3

2

TP413

SYD7

SYD5

SYD4

SYD6

RCAULT
MCPGIN

INPGIN
INPGCK
RCPCNT2

TP416

R401

100K

R422
100K

R402
100K

LDON

OPICGA

RFLAT

ELLVL

AUSCLK

ELON

TP417

AUDATA

C422
10/6.3

1

H

F+
F–

T–
T+

01

C602

1

C603

TP610

C600

22/6.3

0.1

C605

C604

1

1

L600

2.2

SYRD

SYWR

SYD2

SYD3

SYD1

SYD0

PCNT1

SYRS

22 23 24 25

26
27
28

SYD6

29

SYD7

30

VSS

31

RCLAT

32

MCPGI

33

INPGI

34

INPGCK

35

RCPCNT

36

TEST1

37

TEST0

38

JPNP

39

VCC

40

RCLED

41

ELLVL

42
43

LDON

44

OPICGA

45

RFLAT

46

RACLK

47
48
49
50

51 52 53

PBAULT

VSS

SYD1

SYD2

SYD0

SYRS

SYRD

SYWR

PCNT1

SYD3

26

SYD4

27

SYD5

28

SYSTEM MICROCOMPUTER

ELON

48
49

VSS

50

RADAT

PBOPON

KHOLD

RPLAY

PBLAT

REC

MD1

MD0

BUZOUT

55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75

54

INNSW

TP404

TP412

BEEP

PBMUTE

10K

R407

R408
100K

SW402
HOLD

EMPH0

+B

+B

HREC

JOG0
JOG1

HKEY2
HSTOP

HPLAY
HKEY1

C505

C506

0.001

IC501

AK4519VF

R460
47K

R459

47K

R451

5.6K

11

10

12

0.001

SCLK

SDTO

DGND

131415

AD/DA

CONVERTER

C507

10/6.3

C774

+B

1

C773

2.5V REGULATOR

0.22

D836

1SS372

C837

0.1

220K

R826

390K

R824

C826

100/6.3

R455

5.6K

R452

8.2K

R482

18K

8

9

6

7

LRCK

MCLK

PWAD

PWDA

SDTIVDCMODE

DEM1

DEM0

161718192021

IC771

TK71225M

4 3
5

L771
47µH

C771

47/6.3

L862
47µH

+B

C836

0.1

R854

0.2M

R852

R823
100K

8P

C822

L821
10 (CH)

C825

3.3/10

R456

8.2K

R453

18K

R481

4 3 2 1

5

AINL

VCML

AOUTL

AOUTR VBVA

1

C508

R500

4.7

2
1

C868

1

C869

47/6.3

C862

1/16

R853

330K

C859

0.001

R858
100K

100K

C851
68P
(CH)

R821
680K

R822

3.3M

C821
68P (CH)

D821

F10J2E

R457

18K

R454

56K

36K

AINR

VRAD

VCMR

AGND

VCOM

2324

22

C500

10/6.3

TP771

L861

4.7µH

D852

F1J2F

C857
10(CH)

C853

10P

R855
270K

R860
33K

R851
10K

IC821
CPH3303

C481

0.1
DSPS
DSPS
DSPD

VRDA

C772
47/6.3

TP772

C864

47/6.3

PO

VREF

1

DB

2
3

EAIN+
EAIN-

4

EAO

5
6

GND

VREF

1

DB

2
3

EAIN+
EAIN-

4

EAO

5
6

GND

C503

R458

56K

3.3/10

D
F

R

P

• The numbers 1 to 18 are waveform numbers shown in page 36.

7

8 9 10 11 12

Figure 29 SCHEMATIC DIAGRAM (2/4)

– 29 –

MD-MS722H/MS721H

P29 P30

P28

KEY FLEXIBLE PWB UNIT

FLEXIBLE

PWB

1

1
2
3
4
5
6
7
8
9

10

11
12
13
14
15
16
17

18

18

7

7

6

5

4

3

2

1

1

FLEXIBLE

PWB

C509

2.2
C510

2.2
101112

RIHP

ROUT

IC701

27K

R757

27K

R756

C759

C760

0.027

0.027

PBMUTE

RCAULT

RESET

BEEP

AUDATA

AUSCLK

IC871

TK71345M

4.5V REGULATOR
(ON/OFF)

4 3
5

C871

1

D851
RB521S30

100K

R857

0.01

C854

CPH3403

C855
100P(CH)

C858
100P(CH)

R859
15K

C827

1

100P (CH)

C828
100P (CH)

R829
15K

C830
1

Q841

DTA144 TE

2

1

3

DISPLAY
VOL DOWN
REC
EDIT
VCC
P-MODE

JOG 1

JOG 2

GND
BASS
ENTER
STOP
SKIP DOWN
SKIP UP
PLAY
VOL UP
CHARACTER

R719

8

9

LIHP

LOUT

DGND

R702

100

+B
C762
1

C761
1

0.68

C757

10

1112

RIHP

ROUT

1413

C754

1

C872

10

PBAULT

L871

0.47µH

2
1

R872
100K

+B

Q830

DTC144 TE

3

R831

180K

R832
220K

R72

8.2K

8.2K
6

7

RI

AGND

VEE

C701

10/6.3

C702

10/6.3

R754
270K

0.68

C756

8

9

LIHP

LOUT

DGND

16

17

2SA17457

RCPCNT2

2

1

0.33

C833

PCNT2

R712

5.6K

5

R703
120K

R762

3.6K

R761

3.6K

7

AGND

VEE

+B

L752

47µH
C753
1

Q891

C841

22/6.3

PCNT1

TP451
TP452

56K

18K

R458

R454

56K

C481

0.1
DSPSTB
DSPSCK
DSPDAT

AINR

C503

VRAD

VRDA

3.3/10

AGND

2324

C500
10/6.3

C775

0.01

TP771

C772
47/6.3

TP772

C864

47/6.3

C861
1/16

L861

D861

4.7µH
F10J2E

D852

F1J2F

C857
10(CH)

10P

IR3M09N

R855
270K

POWER DRIVE

VREF

1

DB

2
3

EAIN+
EAIN-

4

EAOUT

5
6

GND

VREF

1

DB

2
3

EAIN+
EAIN-

4

EAOUT

5
6

POWER DRIVE

TP453
TP454
TP455
TP456
TP457
TP458
TP459

TP461
TP462
TP463
TP464
TP465
TP466
TP467
TP468

TP485
TP484
TP483
TP482
TP481

R501

470

C501

0.0022
C502

0.0022

C504

3.3/10

C511
1

TP500

L500
22µH

C856

R871

1/16

18

L852

10µH

IC850

OSCIN

OSCOUT
OSC

ROSC

STATE

PWM

VCC

OUT

OSCIN

OSCOUT
OSC

ROSC

STATE

PWM

VCC

OUTGND

IC820

IR3M09N

CN451

CN482

R502

470

D871
RB521S30

4.7µH

12
11
10

9
8

C831

12
11
10
9
8

R843
100K

L851

IC851

7

7

DADATA
ADDATA

A

DFCK
BCLK
LRCK
DIN
ADPON
DAPON
OPTCNT

EMPH1

B

IC202
2723AF

C

D

+B

TP414

E

RDATA

F

C200
1

G

1

3

2

IC200

62FP2002

2V REGULATOR

HREC

JOG0
JOG1

R460

47K

R459

HKEY2

47K

HSTOP

HPLAY
HKEY1

R451

5.6K

11

10

12

C505

0.001

SCLK

SDTO

C506

0.001

DGND

131415

IC501

AD/DA

AK4519VF

CONVERTER

C507

10/6.3

C774
1

C773

0.22

EMPH0

D836

C837

0.1

220K

R826

390K

+B

R824

C826

100/6.3

+B

R457

R456

R455

8.2K

5.6K

R453

R452

18K

8.2K

R482

R481

18K

36K

4 3 2 1

8

9

6

5

7

AINL

LRCK

VCML

MCLK

VCMR

PWAD

PWDA

SDTIVDCMODE

DEM1

DEM0

AOUTL

VCOM

AOUTR VBVA

22

161718192021

1

C508

R500

4.7

IC771

TK71225M

+B

4 3

2
1

5

2.5V REGULATOR

L771
47µH

C771

47/6.3

L862
47µH

C868

1

C869
47/6.3

+B

C862

1/16

C836

0.1

R853

330K

R854

0.2M

1SS372

C853

C859

0.001
R860

33K

R851

R858

10K

100K

100K
R852

C851
68P
(CH)

R821
680K

R822

3.3M

R823
100K

C821
68P (CH)

8P

C822

L821
10 (CH)

IC821
CPH3303

C825

3.3/10
D821

F10J2E

MS722H

R711

5.6K

C734

C733

0.1/16

0.1/16

4 3 2 1

LI

VCC

POWER SELECT

IR3R54N

24

2322212019181716151413

0.01

C703

100

R701

R770
39K

C758

R769 39K

3.3/10

6 5 4 3 2 1

RI

LI

VCC

191815

R753

C755

120K

L751

47µH

R767

1K

C766

0.22

R768

R764
82

Q892

2SA17457

R892

56

R815

R891

2.2K

TP807

C801

R816

0.1

24K

IC802
NDH8304P

CHARGE DRIVE

4

5

3

6

+B

2

7

1

8

D801
SB10015C

R830

100K

F800

1.00A,

63VDC

!

C806

3.3/10

C805

100/6.3

4

3
2

IC841

1

5

XC62HS02

POWER SUPPLY

MICROCOMPUTER

R842

1K

R811
330K

100K

R844

0.1

C813

PHOLD

DCI

START

ONLY

LCD

LCD

DRIVER

0.47µH

AUDIO AMP.

IC703

24 23222120

0.01
R765

27

R766

1K

27

0.22

C765
R763
82

R893

1K

56K

R800

560

2.2K

R801

R814

1K

1

C804

R812
180K

R813
100K

1
2

3

4

IC842

7WH123FU

C-MOS LOGIC

Q842

DTA114YE

L710

INPGCK

R715
100K

INPGIN

MCPGIN

R729

2.7K

R730

2.7K

IR3R54N

AUDIO AMP.

L491

4.7µH

KEY

L-CH
R-CH

C752

0.082

C751

RKEY

ELLVL

ELON
VCC1
C800

R809

1

2.2K

015Z5.1Y

D802

R810

6.8K
1

R803

2

27K

R804
680

D841

1SS361

R841
470K

D843

1SS361

D842

1SS361

R848

1M

8
7
6
5

180K

R849

2

1

3

RPLAY

R717

1K
Q711

RN1444 A

2

3

1

C712

L-CH

100P(CH)

R-CH

R714

R716
100K

10K

C714

1

R728

1K

C731

0.22
C721

3.3/10
C722

3.3/10

C735

0.001

D494

15AZ7.5Y

C491

0.1/16

PLAY

L454

L453

R492
1K

0.082

D491

D492

15AZ7.5Y

RPLAY

C451

0.001

TP805

TP801

R802

4.7K

6
5

CURRENT DRIVE

4 3

D800

R805
680K

0.01

C807

TP808

R807
100K

R808

C808

0.1/16

TP809

1M

R819

C842

1

330K

R845

C715

0.1

C713
1

100P

C711

2SC4213 B

1

C727

R726

39K

8.2K

R723

R727
L-ch
R-ch

C723

0.001

C736
100

L456
L452

RDATA

L457
L458

015Z5.1Y

D493

015Z5.1Y

IC801

HN1C03FU

CONSTANT

1SS368

TP803

R806
300K

TP804

TP810

C802

1

TP811

C803

0.1
TP812

180K

330K

R846

R818

180K

330K

R847

HPLAY

HREC

INN

R713
10K

L702
L703

L704

(CH)

Q721

R724

6.8K

6.8K

L714
L713
L712

C724

0.001

TP729

TP802

DRY

R725

100

C726

TP726
TP725

TP723
TP721
TP727
TP728

3.3/10

TP711

L711

TP722
TP724

TP707
TP709
TP708

TP701
TP702
TP703
TP704
TP705

TP714
TP713
TP712

+B

C725

J701
OPTICAL
/LINE IN

7

VCC

9

Vout

8

GND

1

L

2

R

3

GND

4
5

3.3/10

J702

MIC IN

4
2
3
1

J703

REMOTE

CONTROL
HEADPHONES

6
5
2
4
3
1
7
8

J801

DC IN

1
2
3

BATTERY

TERMINAL

EXT.BATTERY

TERMINAL

H

• NOTES ON SCHEMATIC DIAGRAM can be found on page 35.

1

23456

Figure 30 SCHEMATIC DIAGRAM (3/4)

– 30 –

R

P

MD-MS722H/MS721H

PIN
NO.

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48

PIN
NO.

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

1
2
3
4
5
6
7
8
9

IC101
VOLTAGE

0.7V

0.7V

0.7V

0.7V

1.29V

1.26V

0.7V

1.26V

1.26V

1.26V

1.26V

1.26V

2.52V

2.52V

0.18V

2.52V

2.52V
0V
0V

1.46V

2.34V
0V
0V

2.51V

1.26V

1.26V

1.26V

1.26V

1.26V

1.6V

1.26V

1.26V

1.26V
NC

1.26V

1.26V
0V

1.26V

1.26V

1.26V

1.26V

2.52V
0V
0V

1.26V

1.26V

1.26V
0V

IC202
VOLTAGE

2.5V

1.23V

1.35V

2.37V

1.71V
NC

0.9V

1.76V

0.9V

0.9V

0.58V

2.5V
0V

0.5V

0.79V

1.93V

0.93V

1.26V

1.1V

1.78V

2.05V

1.63V

1.65V
0V

PIN
NO.

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.

10
11
12
13
14

PIN
NO.

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8

VOLTAGE

1V

2.5V

1.27V
0V

1.27V

1.27V

1.27V

1.27V
126V

2.2V

1.43V
2V
0V
0V
0V
0V
1V
0V
0V
0V
0V
0V
0V
0V
0V

1.58V

0.87V

0.87V

1.73V

1.1V

2.5V

0.6V

0.8V

1.9V

0.9V

1.29V

1.8V
0V

1.9V

1.6V

1.64V

1.1V

1.7V

2.5V

1.6V
0V
0V

1.93V
1V

0.9V

IC351
VOLTAGE

0V
0V

2.35V
0V
0V

2.35V
0V

0.91V

2.5V
0V

0.91V

2.35V
0V

4.54V

IC402
VOLTAGE

2.35V
0V
–
–
0V
0V
0V

2.35V

IC200

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

VOLTAGE

1V
0V
0V
0V
0V
2V
0V
0V
0V
0V

0.8V
2V
0V

0.9V

0.79V

1.46V
1V
2V
0V
1V
1V
0V
0V
0V
1V
1V
1V
2V
0V
2V
1V
2V
0V
0V
1V
2V
2V
0V

2.33V

1.24V

1.46V
0V

0.1V

0.35V
0V

1.56V

0.25V

2.28V

2.34V
0V

PIN

VOLTAGE

NO.

0V

1

2.48V

2

0V

3

2.33V

4

NC

5

0V

6

0V

7

0V

8

0V

9

2.35V

10

0V

11

2.35V

12

2.35V

13

2.35V

14

–

15

0V

16

2.35V

17

0V

18

2.35V

19

0V

20

2.35V

21

2.35V

22

0V

23

–

24

–

25

–

26

–

27

–

28

–

29

–

30

0V

31

0V

32

2.14V

33

2.5V

34

2.5V

35

0V

36

0V

37

2.35V

38

2.35V

39

2.35V

40

0V

41

2V

42

0V

43

0V

44

0V

45

2.35V

46

0V

47

2V

48

0V

49

0V

50

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

IC404

PIN

VOLTAGE

NO.

0.22V

1

0.22V

2

0V

3

2.33V

4

2.5V

5

IC431

PIN

VOLTAGE

NO.

2.35V

1

2.35V

2

0V

3

0V

4

IC871

PIN

VOLTAGE

NO.

0V

1

0V

2

0V

3

4.5V

4

6.1V

5

IC401

• The numbers 1 to 18 are waveform numbers shown in page 36.

7

8 9 10 11 12

Figure 31 SCHEMATIC DIAGRAM (4/4)

– 31 –

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

VOLTAGE

2.35V
0V

2.35V
0V

2.33V
0V

2.35V

2.35V

0.3V

2.35V

2.35V

2.27V

2.35V

2.35V

2.35V

1.1V

1.1V
0V

2.34V
0V
0V

2.24V

2.24V
–

2.35V
2V

2.35V

2.35V
0V

1.55V

1.48V

2.12V

2.34V

2.34V

1.47V
0V
0V
0V
0V
0V
0V

2.34V
0V
2V

2.35V
0V
0V

2.25V

2.35V

2.35V

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

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

PIN
NO.

1

2

3

4

5

6

7

8

9
10

IC501
VOLTAGE

2.5V

2.5V
0V
0V
0V
0V
0V
0V
1V
1V
1V
0V
0V

2.5V
0V
0V
0V
0V
0V
0V
0V
0V

2.5V

2.5V

IC601
VOLTAGE

0V
1V

2.34V
0V

4.86V
0V
0V
0V

4.86V

4.86V
0V
0V
0V

4.86V
0V
0V
0V
0V
0V
0V
0V
0V

4.86V
0V
0V
0V

4.86V

4.86V
0V
0V
0V

4.86V
0V
0V

2.5V

10.3V

IC651
VOLTAGE

2.8V
0V
0V
0V
0V
0V
–
0V
0V
0V

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

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

PIN
NO.

1

2

3

4

5

PIN
NO.

1

2

3

4

5

6

IC701

VOLTAGE

0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
–2.65V
0V
0V

2.51V

0.8V
0V
0V
0V

IC703

VOLTAGE

0V
0V
0V
0V
0V
0V
0V

0.95V
0V
0V
0V
0V

2.35V
0V
0V
0V
–2.65V
0V
0V

2.51V

0.83V
0V
0V
0V

IC771

VOLTAGE

1.26V
0V
0V

2.5V

2.8V

IC801

VOLTAGE

0V

0.24V
0V
0V

0.73V

0.73V

PIN
NO.

1
2
3
4
5
6
7
8

9
10
11
12

PIN
NO.

1

2

3

4

5

PIN
NO.

1

2

3

4

5

6

7

8

PIN
NO.

1

2

3

4

5

6

7

8

9
10
11
12

PIN
NO.

1

2

3

4

5

6

7

8

9
10
11
12
13
14
15
16
17
18
19
20

IC820

VOLTAGE

1.25V

1.2V

0.96V
1V

0.95V
0V

3.55V

4.8V

2.47V

0.4V
1V
1V

IC841

VOLTAGE

0V

4.96V

4.92V
0V

2.35V

IC842

VOLTAGE

4.88V

4.88V

4.93V
0V
0V
0V

4.5V

4.93V

IC850

VOLTAGE

1.25V

0.9V

1.22V

1.2V

1.17V
0V

0.64V

4.8V
0V

0.4V
1V
1V

IC901

VOLTAGE

0V
0V
0V
0V
0V
0V
1V
2V
2V
0V

2.5V

0.67V
0V

2.34V
0V

2.5V

0.57V
0V
0V
0V

MD-MS722H/MS721H

A

J801

DC IN

J703

REMOTE CONTROL/

HEADPHONES

R800

R809

D802

R803

R806

IC200

C826

L600

36

4

R805

5

R457

R456

L604

IC802

R802

R810

1

6

34

IC801

1

F800

8

D821

L821

C825

C808

C836

R808

R807

D836

C837

R452

R451

R458

R453

R454

C600

L603

C806

C856

IC821

D852

1

R425

56

R426

C605

C602

C601

L602

L601

20253035

B

C

R801

R804

C807

C200

C803

D

R455

R424

C603

E

C604

L651

4

C651

C622

IC601

5

3

F

1

L609

L610

C609

C610

R361

G

15

10

C608

L608

D351

C351

D352

C361

L851

L852

C857

L771

IC651

19

18

R601

Q354

C204

R205

Q352

D800

D801

C203

C804

C772

R204

C205

C861

IC851

C771

10

C422

76

100

Q353

L861

R351

C805

Q351

D861

R206

J702

MIC IN

R893

Q892

C872

L871

L862

C864

C124

5

1

7

C868

1

3

IC771

C774

IC201

10

R102

R104

5

C775

XL201

R222

C122

IC351

C862

C869

C211

75

80

85

90

95

1

C207

C353

R891

D871

C871

13

R872

5

C773

4
C505

C506

R207

L204

C212

55

606570

15 20

C123

C357

R103

R101

14

10

8

12

MAIN PWB-A (BOTTOM VIEW)

R727

C731

R892

C715

C735

C727

C736

Q891

Q711

45

IC871

L710

L500

C511

1

5

10

12 13

51

45

40

35

30

25

C121

C100

R717

20

15

IC501

L201

C201

50

1

6
7

26

R161

Q101

R154

12 13

C161

L100

C165

R726

24

L171

R728

L703

L202

Q721

C726

R725

L702

C508

C507

C202

IC202

C171

R500

C172

L704

C500

C725

J701

OPTICAL/

LINE IN

5
6
7

8

24

19
18

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

H

, : Through-hole connected to any items other than the ground in 6-layer PWB and the +B pattern.

• The numbers 1 to 18 are waveform numbers shown in page 36.

1

23456

Figure 32 WIRING OF P.W.BOARD (1/3)

– 32 –

TP712

L712

R724

TP705

TP701

R723

C723

C721

C714

SW401

EJECT

17
16

18

R713

TP711

R714

R716

R715

C724

C722

R729

TP704

C713

TP707

TP200

TP110

TP114

TP115

L711

SW402

TP118

TP101

TP487

TP105

L713

TP703

TP708

HOLD

TP144

C103 C102

C104

TP102

24

R730

C734

TP204

TP406

R406

C112

TP116

1

12

TP713

TP714

C703

R703

IC701

510

R720

C733

R719

C711

TP702

TP500

R405

C110

C111

48

1

5

10

13

TP117

R105

1

TP103

D493

L458

L714

R702

13

1520

12

R712

C712

R711

C509

C510

R502

C501

R501

C504

R407

R408

TP211

TP405

C109

TP203

C107

TP139

4045

IC101

20

15

TP151

TP145

TP106

TP108

CN101

PICKUP
FLEXIBLE PWB

P34 1 - C

TP772

C702

C701

R701

C758

C503

C106

37

35

30

TP111

TP728

R754

C502

1

3

TP212

TP206

R106

25

24

TP721

L457

R753

C755

24

TP709

1

R761

C761

C431

R431

D431

IC404

C130

36

TP100

TP130

TP727

R769

5

4

R423

TP415

TP121

TP729

D491

L453

C752

R764

R768

C766

L751

20

IC703

5

R770

R762

R757

C759

C762

R813

C760

1
23

IC431

TP202

C401

TP458

75

76

TP809

80

85

90

95

TP401

100

TP131

1

TP133

TP132

TP207

TP122

22

TP722

L452

C751

L454

TP723

TP724

R766

L752

13

12

1

IC842

4

TP412

C753

C754

Q841

R843

TP400

TP466

R846

C451

R763

C765

TP453

D843

C842

R811

8

5

XL401

TP403

R767

R765

15

10

C756

R756

C813

4

TP457

C757
R844

70

IC401

5101520

R415

R414

TP655

R412

4

TP409

TP410

TP205

TP411

IC402

5

TP109

TP120

2

R819

R855

R854
R853

6065

R413

TP726

L456

TP725

R492

R845

TP402

TP771

1

8

9

R824
R826

R812

C853

4

D492

TP414

R841

R849

R848

C822

55

TP407

TP408

TP351

R907

5

IC841

D841

R821

C859

TP463

R422

TP404

R403

TP201

R404

R411

D494

R823

R858

C354

P34 6 - H

C491

TP802

R815

R816
C801

R831

IC850

TP462

18

TP651

10

TP119

TP485

1

TP610

R402

R401

5

R908

C800

CN482

TP483

12

7
C854

12

7

TP464

TP465

R922

IC901

15

R909

MECHANISM
FLEXIBLE PWB

D842

C851

51

45

40

35

30

25

C905

TP663

1

C841

R832

R857

R851
R852

26

C908

3

R814

R847

L491

TP807

C833

R822

C821

R860

R459

TP468

TP416

TP666
R902

TP661

TP665

Q830

Q842

1

6

D851

1

6

50

TP467

TP208

TP210

C910

TP413

R818

TP209

TP417

R901

TP801

IC820

R460

TP652

1

C907

C906

R904
C909

MAIN PWB-A (TOP VIEW)

LCD

TP805

TP484

R482

C481
R481

17

TP481

C827

C828

C830

C855

C858

R859

C831

TP461

CN451

R921

TP657

CN601

C911

20

R903

R905

11

C902

P34 6 - C

MD-MS722H/MS721H

BATTERY,–

(221)

TP808

EXT. BATTERY

TP482

TP804

R829

C802

TP459

TP810

TP811

TP812

TP456

KEY SWITCH
FLEXIBLE UNIT

TP454

P34 4 - E, G

1

TP451

TP452

TP664

TP662

TP660

TP653

TP658

TP659

15

14

11

10
13

BATTERY,+

(219)

TP656

R906

1

16

TP654

TP601
C903

TP901

TP455

R842

TP602

TP803

(230)

7

8 9 10 11 12

Figure 33 WIRING OF P.W.BOARD (2/3)

– 33 –

MD-MS722H/MS721H

OPTICAL PICKUP UNIT (15)

A

B

C

CN101

TO MAIN PWB

P33 8 - H

D

SLED MOTOR

SW901

DISC IN

SW902

DISC PROTECT

M902

M901

SPINDLE MOTOR

M903

LIFT MOTOR

BK

RD

CN601

TO MAIN PWB

P33 11 - H

MECHA FLEXIBLE PWB UNIT (8)

MAGNETIC HEAD

FLEXIBLE PWB (23)

MD-MS722H

MAGNETIC HEAD

E

KEY FLEXIBLE PWB ASS'Y (248)

CN451

TO MAIN PWB

P33 12 - E

F

(32)

LCD (249)

MD-MS721H

G

KEY FLEXIBLE PWB ASS'Y (248)

CN451

TO MAIN PWB

P33 12 - E

CN482

TO MAIN PWB

P33 11 - B

H

1

23456

Figure 34 WIRING OF P.W.BOARD (3/3)

– 34 –

NOTES ON SCHEMATIC DIAGRAM

• Resistor:
To differentiate the units of resistors, such symbol as K and
M are used: the symbol K means 1000 ohm and the symbol
M means 1000 kohm and the resistor without any symbol is
ohm-type resistor. Besides, the one with “Fusible” is a fuse
type.

• Capacitor:
To indicate the unit of capacitor, a symbol P is used: this
symbol P means micro-micro-farad and the unit of the
capacitor without such a symbol is microfarad. As to electro­lytic capacitor, the expression “capacitance/withstand volt­age” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type

MD-MS722H/MS721H

• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas­sis with no signal given.

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

REF. NO

SW401 EJECT OFF—ON
SW402 HOLD OFF—ON
SW901 DISC IN OFF—ON
SW902 DISC PROTECT OFF—ON

DESCRIPTION

POSITION

B

(G)

(3)

E

(S)

1

2SA17457
2SC4213B
2SK2909
2SK2911
DTA114YE
DTA144TE
DTC144TE
RN1444A

TOP VIEW

TOP

VIEW

C

(D)

(2)

TOP VIEW

1SS361

TOP VIEW

TOP VIEW

015Z5.1Y
015AZ7.5Y
1SS368
RB521S30

TOP VIEW

F1J2F

SB0209CP
1SS372

Figure 35 TYPES OF TRANSISTORS AND DIODES

– 35 –

F10J2E
RB491D
SB10015C

MD-MS722H/MS721H

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)

TP657

(SL+)

TP656

(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

CH2=500mV

DC 10:1

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

T

CH3=5V

DC 10:1

Main : 10K

Zoom : 10K

Stopped

CH1=1mV

DC 10:1

TP208

(FEOUT)

1

1

TP122

2

(F+)

2

CK205

3

(SENSE)

3

CK204

T

(FOK)

4

4

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

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

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
BW : FULL

TP201

9

(EFM)

2

T

TP210

(TEOUT)

1

TP209

(TOTAL)

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

Stopped

CH1=2V

DC 10:1 (2ms/div)

CH2=2V

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

16

17

=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)

T

CK109

(HPFO)

1

CK108
(WBO)

2

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

10

18

=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

Stopped

CH1=2V

CH2=2V

DC 10:1

DC 10:1

TP208

(FEOUT)

1

T

TP210

(TEOUT)

2

TP657

3

(SL+)

TP656

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

CH2=2V

DC 10:1

T

TP208

1

(FEOUT)

TP210

2

(TEOUT)

3

SPDRR

TP601

4

(VM)

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

TP201

(EFM)

1

TP210

T

(TEOUT)

2

3

TP121

4

(T-)

Smoothiing : OFF
BW : FULL

DC 10:1

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

Stopped

CH2=2V

CH1=2V

DC 10:1

DC 10:1

=Filter= =Offset= =Record Length=

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

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)

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

1s/div

ENV

1s/div

ENV

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

Main : 10K
Zoom : 10K

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

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

Measurement

10K

TP

1000P

– 36 –

MD-MS722H/MS721H

TROUBLESHOOTING

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

No

No

No

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".

No

Is operation normal when the main body button is pressed?

No

Is the pin 55 of IC401 in H state?

Yes

Are IC401 pin 3 set to "L"?

Yes

Does the pin 66 of IC401 oscillate?

Yes

No

No

No

– 37 –

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

Check the position of Hold switch.

Check the DISC IN (SW901) switch of mechanism PWB.

Replace XL401.

MD-MS722H/MS721H

• Abnormal display

Is waveform output from CNS 482 pins 1 to 3?
Are the pin7 (VCC) and pin 6 (GND) normal?

Yes

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

Is waveform output from IC 401 pins 45 to 47?

No

Yes

Check between IC401 and
CNS482.

• 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 TP660 in H level?).

Yes

Yes

No

Does the playback time display advance?

Check IC201 and IC202 connection line.

Check the lead-in photointerrupter, mechanical flex
PWB soldering and CNS601 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

No

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.

– 38 –

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

MD-MS722H/MS721H

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.

Check the IC201 periphery.

No

Replace IC601.

No

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

No

• 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 2, 4, 7, and 9 of

Yes

IC651, pins 3 and 14 of CNS601. Check whether disc is record­inhibited.

Does level of pins 34 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,
Q351 to 354, 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

Check periphery of IC401 and IC101.

No

Check for soldering failure of IC201 .

No

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

Yes

IC201.

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

Yes

Does voltage on the IC701 pins 13 to 15 change in case of

No

record VOLUME UP/DOWN?

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

– 39 –

MD-MS722H/MS721H

FUNCTION TABLE OF IC

IC401 RH-iX2772AF03(IX2772AF):System Microcomputer (1/2)

Pin No.

1 P12/TCLKA CIN Input Track cross signal/focus drive detection
2 P13 SPIN Output Spindle motor FG pulse detection input
3 P14 DISCIN Input Disc insertion detection input
4 P15 DISCCPR 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 DSPSTB Output Unit indication strobe output
11* P33 P33 Output Spare
12* SCK0 SCk0 Output Serial IO 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 PHOLD Output System power ON holding output when battery is used
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 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 PB0 Output Spare
42 PB1 _ELONH Output Remote control EL'H' lighting control output
43* PB2 PB2 Output Spare
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 _ELONL Input/Output Remote control EL 'L' lighting control output
49 Vss VSS — Ground potential
50 PA0 RADAT Output RF/Audio IC serial data output
51 PA1 PBLAT Output Audio IC data latch output
52 PA2 REC Input Unit REC key operation detection input
53 PA3 PBOPON Output Audio IC output stage control output
54 P20 RPLAY Input Remote control PLAY key operation 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

– 40 –

MD-MS722H/MS721H

IC401 RH-iX2772AF03(IX2772AF):System Microcomputer (2/2)

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 key operation detection input
70 PF6 PLAY Input Unit PLAY key operation detection input
71 PF5 EMPHO Output Audio emphasis control output 0
72 PF4 JOG0 Input Jog encoder input 0
73 PF3 JOG1 Input Jog encoder input 1
74* PF2 PF2 Output Spare
75* PF1/IRQ1 _IRQ1 Output Software standby return request
76 IRQ0 _DINT Input System LSI interruption request input
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 PLVDRY Input Dry battery voltage detection input
80 AN1 PLVDCI Input DC jack voltage detection input
81 AN2 PLVINN Input Lithium battery voltage 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 TEMP Input Ambient temperature detection input
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 START Input Disc insertion start-up detection input
90* TIOCB4 MCMON Output Internal operation status monitor output
91* P26 P91 Output Spare
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 sleeve operation monitor output
97 PG4 EJSW Input Ejection lever operation detection input
98 Vcc VCC — 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

– 41 –

PARTS GUIDE

MD-MS722H/MS721H

MODEL

“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%.

MD-MS722H
MD-MS721H(BL)
MD-MS721H(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.

– 43 –

MD-MS722H/MS721H

PARTS CODE NO. PARTS CODE

PRICE

RANK

DESCRIPTIONNO.

INTEGRATED CIRCUITS

IC101 VHIIR3R55//-1 J AQ RF Signal,Processor,IR3R55
IC200 VHI62FP2002-1 J AE 2V Regulator,62FP2002
IC201 VHILR37811/-1 J BB ENDEC LSI,LR37811
IC202 RH-IX2723AFZZ J BC 16Bit D-RAM,IX2723AF
IC351 VHI74ACT02T-1 J AE Head Driver,74ACT02T
IC401 RH-IX2772AF03 J AW System Microcomputer,

IC401 RH-IX2772AF04 J System Microcomputer,

IC402 VHIS29L294A-1 J AH EE-PROM,S29L294A
IC404 VHI7SH00FU/-1 J AE NAND Gate,7SH00FU
IC431 VHIS80820LN-1 J AD Reset,S80820LN
IC501 VHIAK4519VF-1 J AQ AD/DA Converter,AK4519VF
IC601 VHI17A39TD/-1 J AP PWM Driver,17A39TD
IC651 VHILB1930M/-1 J AH Motor Driver,LB1930M
IC701 VHIIR3R54N/-1 J AQ Audio Amp.,IR3R54N
IC703 VHIIR3R54N/-1 J AQ Audio Amp.,IR3R54N
IC771 VHITK71225M-1 J AE 2.5V Regulator,TK71225M
IC801 VHIHN1C03FU-1 J AD Constant Current Drive,

IC802 VHINDH8304P-1 J AH Power Select Charge Drive,
IC820 VHIIR3M09N/-1 J AL Power Drive,IR3M09N

IC821 VHICPH3303/-1 J AE P-ch MOS FET,CPH3303
IC841 VHIXC62HS02-1 J AE Power Supply Microcomputer,

IC842 VHI7WH123FU-1 J AF C-MOS Logic,7WH123FU
IC850 VHIIR3M09N/-1 J AL Power Drive,IR3M09N
IC851 VHICPH3403/-1 J AE N-ch MOS FET,CPH3403
IC871 VHITK71345M-1 J AE 4.5V Regulator

IC901 VHIBA6965AF-1 J AM 3-Phase Brush Leess Driver,

IX2772AF
(Serial No.811ЧЧЧЧЧ)

IX2772AF
(Serial No.812ЧЧЧЧЧ~)

HN1C03FU
NDH8304P

XC62HS02

(ON/OFF),TK71345M
BA6965AF

TRANSISTORS

Q101 VS2SA17457/-1 J AB Silicon,PNP,2SA17457
Q351 VS2SK2909//-1 J AE FET,2SK2909
Q352 VS2SK2911//-1 J AE FET,2SK2911
Q353 VS2SK2909//-1 J AE FET,2SK2909
Q354 VS2SK2911//-1 J AE FET,2SK2911
Q711 VSRN1444A//-1 J AC Digital,NPN,RN1444 A
Q721 VS2SC4213B/-1 J AC Silicon,NPN,2SC4213 B
Q830 VSDTC144TE/-1 J AC Digital,NPN,DTC144 TE
Q841 VSDTA144TE/-1 J AB Digital,PNP,DTA144 TE
Q842 VSDTA114YE/-1 J AC Digital,PNP,DTA114 YE
Q891,892 VS2SA17457/-1 J AB Silicon,PNP,2SA17457

DIODES

D351,352 VHDSB0209CP-1 J AC Silicon,SB0209CP
D431 VHD1SS361//-1 J AB Silicon,1SS361
D491 VHE015Z5R1Y-1 J AD Zener,5.1V,015Z5.1Y
D492 VHE15AZ7R5Y-1 J AC Zener,7.5V,15AZ7.5Y
D493 VHE015Z5R1Y-1 J AD Zener,5.1V,015Z5.1Y
D494 VHE15AZ7R5Y-1 J AC Zener,7.5V,15AZ7.5Y
D800 VHD1SS368//-1 J AC Silicon,1SS368
D801 VHDSB10015C-1 J AD Silicon,SB10015C
D802 VHE015Z5R1Y-1 J AD Zener,5.1V,015Z5R1Y
D821 VHDF10J2E//-1 J AC Silicon,F10J2E
D836 VHD1SS372//-1 J AD Silicon,1SS372
D841~843 VHD1SS361//-1 J AB Silicon,1SS361
D851 VHDRB521S30-1 J AC Silicon,RB521S30
D852 VHDF1J2F///-1 J AE Silicon,F1J2F
D861 VHDF10J2E//-1 J AC Silicon,F10J2E
D871 VHDRB521S30-1 J AC Silicon,RB521S30
PH901 VHPGP1S93K/-1 J AF Phote Interrupter,GP1S93K

COILS

L100 VPBNN100M0000 J AC 10 µH
L171 RCILC0356AFZZ J AC 10 µH
L201 VPCBM220K0000 J AC 22 µH
L202 VPCBM101K0000 J AC 100 µH
L204 RCILC0353AFZZ J AB Tip Solid Induction,100mA
L452 RCILC0352AFZZ J AB Tip Impeder,150mA
L453,454 RCILC0353AFZZ J AB Tip Solid Induction,100mA
L456~458 RCILC0353AFZZ J AB Tip Solid Induction,100mA

PRICE
RANK

L491 VPBNN4R7M0000 J AC 4.7 µH
L500 VPCBM220K0000 J AC 22 µH
L600 RCILC0331AFZZ J AC 2.2 µH,Choke
L601~604 RCILC0358AFZZ J AC 4.7 µH,Choke
L608 RCILC0359AFZZ J AC 100 µH,Choke
L609,610 RCILC0358AFZZ J AC 4.7 µH,Choke
L651 VPBNNR47M0000 J AC 0.47 µH
L702,703 RCILC0353AFZZ J AB Tip Solid Induction,100mA
L704 RCILC0352AFZZ J AB Tip Impeder,150mA
L710 VPBNNR47M0000 J AC 0.47 µH
L711 RCILC0352AFZZ J AB Tip Impeder,150mA
L712~714 RCILC0353AFZZ J AB Tip Solid Induction,100mA
L751,752 RCILC0344AFZZ J AC 47 µH,Choke
L771 RCILC0358AFZZ J AC 4.7 µH,Choke
L821 RCILC0333AFZZ J AC 10 µH,Choke
L851 RCILC0332AFZZ J AC 4.7 µH,Choke
L852 RCILC0333AFZZ J AC 10 µH,Choke
L861 RCILC0332AFZZ J AC 4.7 µH,Choke
L862 RCILC0358AFZZ J AC 4.7 µH,Choke
L871 VPBNNR47M0000 J AC 0.47 µH

DESCRIPTION

VIBRATORS

XL201 RCRSC0023AFZZ J AK Crystal,33.8688 MHz
XL401 RCRM-0199AFZZ J AD Ceramic,4.194 MHz

CAPACITORS

C100 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,Tantalum
C102,103 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C104 VCKYTV1EB273K J AB 0.027 µF,25V
C106 RC-KZ1204AFZZ J AB 0.22 µF,10V,Electrolytic
C107 VCKYTV1EB123K J AB 0.012 µF,25V
C109 RC-KZ1184AFZZ J AC 1 µF,16V,Electrolytic
C110 RC-KZ1204AFZZ J AB 0.22 µF,10V,Electrolytic
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 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C165 VCKYCY1CB333K J AA 0.033 µF,16V
C171,172 VCSAFB0JJ336M J AE 33 µF,6.3V,Electrolytic,

C200 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C201 RC-KZ1184AFZZ J AC 1 µF,16V,Electrolytic
C202 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,

C203 VCKYCY1CB104K J AB 0.1 µF,16V
C204 VCKYCY1AB474K J AC 0.47 µF,10V
C205 VCKYCY1CB104K J AB 0.1 µF,16V
C207 VCKYCY1CB104K J AB 0.1 µF,16V
C211 VCCCCY1HH5R0C J AA 5 pF (CH),50V
C212 VCCCCY1HH8R0D J AA 8 pF (CH),50V
C351 VCCCCY1HH470J J AA 47 pF (CH),50V
C353 VCSAFA0JJ106M J AD 10 µF,6.3V,Electrolytic,

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
C422 VCSATR0JJ106M J AB 10 µF,6.3V,Electrolytic,

C431 RC-KZ1206AFZZ J AC 0.47 µF,10V
C451 VCKYCY1HB102K J AA 0.001 µF,50V
C481 VCKYCY1CB104K J AB 0.1 µF,16V
C491 RC-KZ1182AFZZ J AB 0.1 µF,16V,Electrolytic
C500 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,

C501,502 VCKYCY1HB222K J AA 0.0022 µF,50V
C503,504 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,

C505,506 VCKYCY1HB102K J AA 0.001 µF,50V
C507 VCSATA0JJ106M J AD 10 µF,6.3V,Electrolytic,Tantalum
C508 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C509,510 VCKYTV1CF225Z J AC 2.2 µF,16V
C511 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C600 VCEAPW0JW226M J AC 22 µF,6.3V,Electrolytic
C601~604 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C605 VCKYCY1CB104K J AB 0.1 µF,16V
C608 RC-KZ1186AFZZ J AD 3.3 µF,10V,Electrolytic
C609,610 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic

Tantalume

Tantalume

Tantalume

Tantalume

Tantalume

Tantalume

– 1 –

MD-MS722H/MS721H

NO. PARTS CODE

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,

C703 VCKYCY1EB103K J AA 0.01 µF,25V
C711,712 VCCCCY1HH101J J AA 100 pF (CH),50V
C713,714 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C715 VCKYCY1CB104K J AB 0.1 µF,16V
C721,722 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,

C723,724 VCKYCY1HB102K J AA 0.001 µF,50V
C725,726 VCSATA1AJ335M J AB 3.3 µF,10V,Electrolytic,

C727 VCKYTV1CF105Z J AB 1 µF,16V
C731 VCKYCY1CF224Z J AB 0.22 µF,16V
C733,734 RC-KZ1182AFZZ J AB 0.1 µF,16V,Electrolytic
C735 VCKYCY1HB102K J AA 1000 pF,50V
C736 VCCCCY1HH101J J AA 100 pF (CH),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 VCKYCY0JB105K J AC 1 µF,6.3V
C765,766 RC-KZ1204AFZZ J AB 0.22 µF,10V,Electrolytic
C771,772 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,

C773 RC-KZ1204AFZZ J AB 0.22 µF,10V,Electrolytic
C774 VCKYTV1CF105Z J AB 1 µF,16V
C775 VCKYCY1EB103K J AA 0.01 µF,25V
C800 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C801 VCKYCY1CB104K J AB 0.1 µF,16V
C802 VCKYCY0JB105K J AC 1 µF,6.3V
C803 VCKYCY1CB104K J AB 0.1 µF,16V
C804 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C805 VCEAPW0JW107M J AD 100 µF,6.3V,Electrolytic
C806 RC-KZ1186AFZZ J AD 3.3 µF,10V,Electrolytic
C807 VCKYTV1EB103K J AA 0.01 µF,25V
C808 RC-KZ1182AFZZ J AB 0.1 µF,16V,Electrolytic
C813 VCKYCY1CB104K J AB 0.1 µF,16V
C821 VCCCCY1HH680J J AA 68 pF (CH),50V
C822 VCCCCY1HH8R0D J AA 8 pF (CH),50V
C825 RC-KZ1186AFZZ J AD 3.3 µF,10V,Electrolytic
C826 VCEAPW0JW107M J AD 100 µF,6.3V,Electrolytic
C827,828 VCCCCY1HH101J J AA 100 pF (CH),50V
C830,831 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C833 RC-KZ1205AFZZ J AB 0.33 µF,10V
C836,837 VCKYCY1CB104K J AB 0.1 µF,16V
C841 VCSATA0JJ226M J 22 µF,6.3V,Electrolytic,

C842 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C851 VCCCCY1HH680J J AA 68 pF (CH),50V
C853 VCCCCY1HH100D J AA 10 pF (CH),50V
C854 VCKYCY1EB103K J AA 0.01 µF,25V
C855 VCCCCY1HH101J J AA 100 pF (CH),50V
C856 RC-KZ1184AFZZ J AC 1 µF,16V,Electrolytic
C857 VCKYTQ0JB106K J AE 10 µF,6.3V
C858 VCCCCY1HH101J J AA 100 pF (CH),50V
C859 VCKYCY1HB102K J AA 0.001 µF,50V
C861,862 RC-KZ1184AFZZ J AC 1 µF,16V,Electrolytic
C864 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,

C868 VCKYTV1CF105Z J AB 1 µF,16V
C869 VCSATE0JJ476M J AD 47 µF,6.3V,Electrolytic,

C871 RC-KZ1183AFZZ J AC 1 µF,10V,Electrolytic
C872 VCSATA1AJ106M J AE 10 µF,10V,Electrolytic,Tantalume
C902 VCKYCY1EB103K J AA 0.01 µF,25V
C903 RC-KZ1186AFZZ J AD 3.3 µF,10V,Electrolytic
C905~907 VCKYCY1HB222K J AA 0.0022 µF,50V
C908 RC-KZ1204AFZZ J AB 0.22 µF,10V,Electrolytic
C909,910 VCKYCY1CB333K J AA 0.033 µF,16V
C911 VCKYCY1CB104K J AB 0.1 µF,16V

PRICE

RANK

DESCRIPTION

Tantalume

Tantalume

Tantalume

Tantalume

Tantalume

Tantalume

Tantalume

Tantalume

RESISTORS

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

R101~104 VRS-CY1JB223J J AA 22 kohms,1/16W
R105 VRS-CY1JB394J J AA 390 kohms,1/16W

Green

NO.

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
R204 VRS-CY1JB102J J AA 1 kohm,1/16W
R205 VRS-CY1JB684D J AA 680 kohms,1/16W
R206 VRS-CY1JB274D J AA 270 kohms,1/16W
R207 VRS-CY1JB681J J AA 680 ohms,1/16W
R222 VRS-CY1JB105J J AA 1 Mohm,1/16W
R351 VRS-CY1JB4R7J J AA 4.7 ohms,1/16W
R361 VRS-TQ2BB150J J AA 15 ohms,1/8W
R401,402 VRS-CY1JB104J J AA 100 kohm,1/16W
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-CY1JB223D J AA 22 kohms,1/16W
R424,425 VRS-CY1JB223J J AA 22 kohms,1/16W
R426 VRS-CY1JB223D 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
R454 VRS-CY1JB563J J AA 56 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
R459,460 VRS-CY1JB473J J AA 47 kohms,1/16W
R481 VRS-CY1JB363D J AA 36 kohms,1/16W
R482 VRS-CY1JB183D 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
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
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-CY1JB362J J AA 3.6 kohms,1/16W
R763,764 VRS-CY1JB820J J AA 82 ohms,1/16W
R765,766 VRS-CY1JB270J J AA 27 ohms,1/16W
R767,768 VRS-CY1JB102J J AA 1 kohm,1/16W
R769,770 VRS-CY1JB393J J AA 39 kohms,1/16W
R800 VRS-TV2AB561J J AA 560 ohms,1/10W
R801 VRS-CY1JB222D J AA 2.2 kohms,1/16W
R802 VRS-CY1JB472J J AA 4.7 kohms,1/16W
R803 VRS-CY1JB273D J AA 27 kohms,1/16W
R804 VRS-CY1JB681D J AA 680 ohms,1/16W
R805 VRS-CY1JB684D J AA 680 kohms,1/16W
R806 VRS-CY1JB304D J AA 300 kohms,1/16W
R807 VRS-CY1JB104D J AA 100 kohm,1/16W
R808 VRS-CY1JB105D J AA 1 Mohm,1/16W
R809 VRS-CY1JB222J J AA 2.2 kohms,1/16W
R810 VRS-CY1JB682J J AA 6.8 kohms,1/16W
R811 VRS-CY1JB334J J AA 330 kohms,1/16W
R812 VRS-CY1JB184J J AA 180 kohms,1/16W
R813 VRS-CY1JB104J J AA 100 kohm,1/16W
R814 VRS-CY1JB102J J AA 1 kohm,1/16W
R815 VRS-CY1JB563D J AA 56 kohms,1/16W
R816 VRS-CY1JB243F J AA 24 kohms,1/16W
R818,819 VRS-CY1JB184J J AA 180 kohms,1/16W
R821 VRS-CY1JB684J J AA 680 kohms,1/16W
R822 VRS-CY1JB335J J AA 3.3 Mohms,1/16W
R823 VRS-CY1JB104J J AA 100 kohm,1/16W

PRICE

RANK

DESCRIPTIONPARTS CODE

– 2 –

MD-MS722H/MS721H

PARTS CODE NO. PARTS CODE

R824 VRS-CY1JB394D J AA 390 kohms,1/16W
R826 VRS-CY1JB224D J AA 220 kohms,1/16W
R829 VRS-CY1JB153J J AA 15 kohms,1/16W
R830 VRS-CY1JB104J J AA 100 kohm,1/16W
R831 VRS-CY1JB184D J AA 180 kohms,1/16W
R832 VRS-CY1JB224D J AA 220 kohms,1/16W
R841 VRS-CY1JB474J J AA 470 kohms,1/16W
R842 VRS-CY1JB102J J AA 1 kohm,1/16W
R843,844 VRS-CY1JB104J J AA 100 kohm,1/16W
R845~847 VRS-CY1JB334J J AA 330 kohms,1/16W
R848 VRS-CY1JB105J J AA 1 Mohm,1/16W
R849 VRS-CY1JB184J J AA 180 kohms,1/16W
R851 VRS-CY1JB103J J AA 10 kohm,1/16W
R852 VRS-CY1JB104J J AA 100 kohm,1/16W
R853 VRS-CY1JB334D J AA 330 kohms,1/16W
R854 VRS-CY1JB225J J AA 0.2 Mohms,1/16W
R855 VRS-CY1JB274D J AA 270 kohms,1/16W
R857,858 VRS-CY1JB104J J AA 100 kohm,1/16W
R859 VRS-CY1JB153J J AA 15 kohms,1/16W
R860 VRS-CY1JB333J J AA 33 kohms,1/16W
R872 VRS-CY1JB104J J AA 100 kohm,1/16W
R891 VRS-CY1JB222J J AA 2.2 kohms,1/16W
R892 VRS-CY1JB560J J AA 56 ohms,1/16W
R893 VRS-CY1JB102J J AA 1 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
R921 VRS-CY1JB331J J AA 330 ohms,1/16W
R922 VRS-CY1JB104J J AA 100 kohm,1/16W

PRICE

RANK

DESCRIPTIONNO.

OTHER CIRCUITRY PARTS

CN101 QCNCW801XAFZZ J AH Socket,22Pin
CN451 QCNCW804TAFZZ J AE Socket,18Pin
CN482 QCNCW804GAFZZ J AD Socket,7Pin
CN601 QCNCW716RAFZZ J AF Socket,16Pin

! F800 QFS-L102AAFNO J AE Fuse,100A,63VDC,Tip Type

J701 VHLGP1FB95R-1 J AP Jack,OPTICAL/LINE IN
J702 QJAKM0189AFZZ J AE Jack,MIC IN
J703 QJAKM0201AFZZ J AH Jack,Remote Control/Head-

J801 QJAKC0139AFZZ J AE DC Jack
M901 RMOTV0510AFZZ J AS Motor Ass’y [Spindle]
M902 RMOTV0511AFZZ J AT Motor Ass’y [Sled]
M903 RMOTV0512AFM1 J AR Motor Ass’y [Lift]
SW401 QSW-M0001AWZZ J AD Switch,Push Type [EJECT]
SW402 QSW-S0948AFZZ J AC Switch,Slide Type [HOLD]
SW901 QSW-M0169AFZZ J AD Switch,Push Type [Disc In]
SW902 QSW-M0170AFZZ J AD Switch,Push Type [Disc Protect]

phones

MECHANICAL PARTS

1 NGERH0597AFZZ J AC Wheel,Drive
2 NSFTD0331AFFT J AE Screw,Drive
3 LHLDX3136AFM2 J AK Cartridge Holder Ass’y
4 MSPRT1607AFFJ J AB Spring,Cancel Lever
5 MLEVF2598AFFW J AD Lever,Eject
6 LCHSM0941AFM1 J AT Main Chassis Ass’y
7 PCUSG0599AFZZ J AB Cushion
8 QPWBH0326AFM1 J AM Mechanism Flexible PWB Ass’y
8- 1 ———— — Mechanism Flexible PWB

8- 2(SW901) QSW-M0169AFZZ J AD Switch,Push Type [Disc In]
8- 3(SW902) QSW-M0170AFZZ J AD Switch,Push Type [Disc Protect]
8- 4(PH901) VHPGP1S93K/-1 J AF Photo Interrupter,GP1S93K
9 MSPRP0925AFFJ J AD Driver Screw Bracket
11 MSPRP0923AFFJ J AD Plate Spring
12 MSPRP0924AFM1 J AD Shutter Spring Ass’y
13 NGERH0603AFZZ J AE Gear,Drive

! 15 RCTRH8175AFZZ J BM Optical Pickup Unit

16 MSPRP0922AFFJ J AD Spring,Drive Grip
18 NSFTM0292AFFW J AC Shaft,Guide
20 MSPRT1604AFFJ J AB Spring,Eject Lever
23 QPWBH0327AFZZ J AG Magnetic Head Flexible PWB
25 MLEVF2625AFM1 J AK Lift Lever Ass’y
27 MLEVF2626AFFW J AD Lever,Lift Joint
28 MLEVF2627AFFW J AE Lever,Lift

(Not Replacement Item)

PRICE
RANK

29 MSPRD1360AFFJ J AC Spring,Lift Lever
30 LANGF1588AFFW J AD Bracket,Pickup
32 RCILH0110AFZZ J AM Magnetic Head
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×ø2.4×0.25mm
505 LX-BZ0800AFZZ J AA Screw,ø1.4×2.5mm
506 XSPSN14P01500 J AA Screw,ø1.7×2.5mm
508 LX-BZ0960AFZZ J AB Screw,ø1.4×1.5mm
509 LX-BZ0980AFZZ J AB Screw,ø1.4×2mm
511 LX-BZ0804AFFF J AA Screw,ø1.4×2.2mm
514 LX-JZ0148AFZZ J AA Screw,ø1.7×3mm
515 LX-WZ9296AFZZ J AA Washer,ø1.5×ø3.5×0.25mm
516 LX-BZ0974AFZZ J AB Screw,ø1.4×5.5mm
517 XAPSF14P01600 J AA Screw,ø1.4×1.6mm
518 XWSSD14-05000 J AA Spring Washer,ø1.4×0.5mm
M901 RMOTV0510AFZZ J AS Motor Ass’y [Spindle]
M902 RMOTV0511AFZZ J AT Motor Ass’y [Sled]
M903 RMOTV0512AFM1 J AR Motor Ass’y [Lift]

DESCRIPTION

CABINET PARTS

201 CCABB2882AF01 J AT Front Cabinet Ass’y [MS722H]
201 CCABB2882AF03 J AT Front Cabinet Ass’y [MS721H]
201- 1 ———— — Front Cabinet

201- 2 GFTAC3135AFSA J AG Cover,MD
201- 3 LANGZ0335AFFW J AB Bracket,Disc Guide
201- 4 PCUSG0638AFZZ J AA Rubber,Preventive Vibration
201- 5 PGIDM0256AFSA J AB Guide (Left)
202 CCABC4370AF01 J AX Top Cabinet Ass’y [MS722H]
202 CCABC4378AF01 J AX Top Cabinet Ass’y [MS721H (S)]
202 CCABC4378AF03 J AY Top Cabinet Ass’y

202- 1 ———— — Top Cabinet
202- 2 LHLDL3061AFSA J AE Holder,Strap

203 GCABA2882AFSA J AE Center Cabinet [MS722H]
203 GCABA2882AFSB J AE Center Cabinet [MS721H]
204 CCABD4384AF01 J AT Bottom Cabinet Ass’y [MS722H]
204 CCABD4388AF01 J Bottom Cabinet Ass’y

204 CCABD4388AF03 J AT Bottom Cabinet Ass’y

204- 1 ———— — Bottom Cabinet
204- 2 GCOVA2292AFSA J AB Cover,DC Jack
204- 3 JKNBZ2113AFSA J AE Knob,Hold
204- 4 PSHET0401AFZZ J AC Sheet,Insulator,Bottom Cabinet
205 GCOVA2284AFSA J AD Cover,Eject [MS722H]
205 GCOVA2284AFSB J AD Cover,Eject [MS721H]
206 JKNBK0526AFSA J AE Knob,Eject
207 LANGT1953AFFW J AC Bracket,Eject Knob
208 LANGZ0348AFM1 J AM Eject Bracket Ass’y
209 PSHET0373AFZZ J AC Sheet
210 PSHEZ0851AFZZ J AC Bracket,Eject Knob
211 LANGK0956AFM1 J AM Main Frame Ass’y
212 PCUSG0649AFZZ J AB Cushion Machanism
213 PCUSG0671AFZZ J AB Cushion
214 PSHEZ0966AFZZ J AC Sheet,Insulator Extension

215 PCUSG0675AFZZ J AB Cushion B
216 PGUMS0729AFZZ J AB Cushion Mechanism A
217 PSHEZ0989AFZZ J AB Sheet,Extension Battery

218 PCUSG0534AFZZ J AC Rubber,Preventive Vibration
219 QTANZ9162AFFQ J AC Terminal,+,Rechargeable Battery
220 PCUSG0635AFZZ J AA Rubber,Preventive Vibration B
221 QTANZ9163AFFQ J AC Terminal,-,Rechargeable Battery
222 PCUSG0674AFZZ J AB Cushion A [MS722H Only]
223 PCUSG0676AFZZ J AB Cushion C [MS722H Only]
225 PSHEZ0990AFZZ J AB Sheet,Ring [MS722H Only]
226 PSPAZ0565AFZZ J AB Spacer,Rubber,Preventive

228 PFLT-1127AFZZ J AA PU Felt
229 GFTAB1359AFSA J AE Lid,Battery

229 GFTAB1359AFSB J AE Lid,Battery [MS721H (BL)]
230 QTANZ9164AFFQ J AH Extension Battery Terminal
231 GCOVA1301AFSA J AY Guide,Disc [MS722H Only]
232 PSHEZ0965AFZZ J AC Sheet,Disc Guide

(Not Replacement Item)

[MS721H (BL)]

(Not Replacement Item)

[MS721H (S)]
[MS721H (BL)]

Battery Terminal

Terminal

Vibration [MS721H Only]

[MS722H/MS721H (S)]

[MS722H Only]

– 3 –

MD-MS722H/MS721H

NO. PARTS CODE

233 GCOVH1302AFZZ J AD Cover,LCD [MS722H Only]
234 HDECQ0580AFSA J AK Decoration Plate [MS722H]
234 HDECQ0583AFSA J AH Decoration Plate [MS721H]
235 HDECQ0578AFSA J AK Decoration Ring A

236 HDECQ0579AFSA J AF Decoration Ring B
237 JKNBZ2130AFSA J AF Knob,Function A [MS722H]

237 JKNBZ2144AFSA J AK Knob,Function A [MS721H]
238 JKNBZ2131AFSA J AF Knob,Function B [MS722H]
238 JKNBZ2145AFSA J AF Knob,Function B [MS721H]
239 JKNBZ2132AFSA J AE Knob,Function C [MS722H]
239 JKNBZ2146AFSA J AF Knob,Function C [MS721H]
240 JKNBZ2133AFSA J AE Knob,Function D [MS722H Only]
241 JKNBZ2134AFSA J AE Knob,Rec [MS722H]
241 JKNBZ2147AFSA J AC Knob,Rec [MS721H]
242 JKNBZ2135AFSA J AK Knob,Jog [MS722H Only]
243 JKNBZ2136AFSA J AE Knob,FF/FR [MS722H Only]
244 JKNBZ2137AFSA J AE Knob,Play [MS722H Only]
246 PSHEZ0967AFZZ J AC Sheet,Transparent Plate

246 PSHEZ0973AFZZ J AC Sheet,Transparent Plate
248 RUNTK0489AFZZ J AU Key Flexible PWB Ass’y
248 RUNTK0493AFZZ J AQ Key Flexible PWB Ass’y
249 RUNTZ0704AFZZ J AY LCD [MS722H]

249 RUNTZ0705AFZZ J AY LCD [MS721H]
250 PSPAZ0564AFZZ J AB Spacer [MS721H Only]
251 PSHEZ0994AFZZ J AB Sheet,Switch,B [MS722H Only]
252 PGUMS0730AFZZ J AB Cushion,Mechanism B

253 HDECQ0584AFSA J AQ Alumi Decoration Plate
253 HDECQ0584AFSB J AR Alumi Decoration Plate
254 LHLDZ1747AFZZ J AC Holder,LCD [MS721H Only]

255 PSHEZ0974AFZZ J AD Sheet,Knob [MS721H Only]
256 PSHEZ0998AFZZ J AC Sheet,Eject Bracket
259 PCUSG0679AFZZ J AB Cushion A [MS721H Only]
260 PCUSG0680AFZZ J AB Cushion B [MS721H Only]
261 PCUSG0681AFZZ J AB Cushion C [MS721H Only]
262 PFLT-1143AFZZ J AB Felt [MS721H Only]
263 PSHEZ0999AFZZ J AB Sheet,LCD Flexible

264 PSHEZ1004AFZZ J AB Sheet,Volume Knob
265 TLABS0497AFZZ J AD Caution,Laser

266 TLABS0503AFZZ J AC Label,Laser
601 LX-BZ0877AFF3 J AA Screw,ø1.4×1.5mm
602 LX-CZ0107AFFF J AA Screw,ø1.2×2.5mm

603 LX-CZ0126AFFF J AA Screw,ø1.4×2mm
604 LX-BZ0805AFFN J AB Screw,ø1.7×2.5mm
605 LX-BZ0822AFFC J AC Screw,ø1.4×2.5mm
606 LX-BZ0967AFFC J AB Screw,ø1.4×2mm
607 LX-BZ0908AFF3 J AA Screw,ø1.4×2.0mm

PRICE

RANK

DESCRIPTION

[MS722H Only]
[MS722H Only]

[MS722H]
[MS721H]
[MS722H]
[MS721H]

[MS722H Only]
[MS721H (S)]
[MS721H (BL)]

[MS722H Only]
[MS721H Only]

[MS721H Only]

ACCESSORIES/PACKING PARTS

1 GCASZ0086AFSA J AX Battery Case
2 QCNWG0382AFZZ J AK Connecting Cord,RCA Type

! 3 RADPA7486AFZZ J AY AC Adaptor

! 3 RADPA8487AFZZ J BC AC Adaptor [MS722H for UK]
! 4 RPHOH0176AFZZ J AR Headphones

4- 1 PCAPH8107AFZZ J AD Cushion,Headphones
5 RRMCW0038AFSA J BC Remote Control
6 SPAKA2679AFZZ J AD Packing Add.
7 SPAKC6671AFZZ J AL Packing Case [MS722H]
7 SPAKC6683AFZZ J AL Packing Case [MS721H (S)]
7 SPAKC6684AFZZ J AL Packing Case [MS721H (BL)]
8 SPAKZ0481AFZZ J AD Pad,AC Adaptor
9 UBATI0068AFSA J BG Rechargeable,Battery
10 UBNDT0083AFSA J AG Strap
11 QCNWG0422AFZZ J AQ Connecting Cord,Optical Type
12 TINSE1604AFZZ J AG Operation Manual

12 TINSZ1380AFZZ J AR Operation Manual

[MS722H Except for UK/
MS721H]

[MS722H for UK]
[MS722H Except for UK]

NO.

12 TINSZ1385AFZZ J AP Operation Manual [MS721H]
13 UBAGC0076AFSA J AH Carrying Case
14 SSAKP0116AFZZ J AD Paper Bag,Unit
15 TCADS0085AFZZ J AD Service Card

16 SPAKZ0475AFZZ J AD Spacer,Operation Manual
17 SPAKZ0498AFZZ J Packing Add.,Unit

18 SPAKZ0509AFZZ J Packing Add.,Unit

PRICE

RANK

[MS722H for UK Only]
[MS722H for UK Only]

DESCRIPTIONPARTS CODE

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

PWB-A DCYO-3077AF93 J — Main

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

(TEAC Test MD)
(TEAC Test MD)

– 4 –

MD-MS722H/MS721H

A

503

506

8

8-1

8-4

2

9

8-2
(SW901)

B

18

C

505

15

16

M901

514

11

502x3

1

515

25

514

8-3
(SW902)

504

503x2

13

M902

516

M903

D

27

7

508

509

E

6

517

23

28

F

29

511x2

3

518x2

32

12

G

4

20

H

30

508

5

1

23456

Figure 5 MD MECHANISM EXPLODED VIEW

– 5 –

235

MD-MS722H/MS721H

MS722

234

251x2

225x2

240

202

236

238

243

MD MECHANISM

244

217

214

MS721

201-5

201

219

201-1

212

603

201-2

201-3

212

MS721H
ONLY

201-4

218

250

213

216

601

226

601

249

248

230

252

-2

606

601

202

225x2

222

MS721H
ONLY

216

220

256

229

215

218

210

203

205

212

211

209

207

208

601

607

206

241

A

237

239

B

233

242

246

263

C

606x2

202-1

D

223x2

232

231

PWB

266

E

265

254

238

F

241

237

264x3

248

253

255

202

234

246

249

239

606x2

228x2

604

204-1

604

204-4

–A

221

204

204-2

606

G

202-1

260x2

262

H

602

259

202-2

261

606x2

204-3

605

1

23456

Figure 6 CABINET EXPLODED VIEW

– 6 –

MD-MS722H/MS721H

PACKING METHOD (MD-MS722H FOR UK ONLY)

SETTING POSITION OF SWITCHES AND KNOBS

UNIT HOLD OFF
Remote HOLD CANCEL

Control

1. Battery Case GCASZ0086AFSA

2. Connecting Cord, RCA Type QCNWG0382AFZZ

3. AC Adaptor RADPA8487AFZZ

4. Headphones RPHoH0176AFZZ

5. Remote Control RRMCW0038AFSA

6. Packing Add. SPAKA2679AFZZ

7. Packing Case SPAKC6671AFZZ

8. Pad, AC Adaptor SPAKZ0481AFZZ

9. Rechargeable, Battery UBATi0068AFSA

10. Strap UBNDT0083AFSA

11. Connection Cord, Optical Type QCNWG0422AFZZ

12. Operation Manual TiNSE1604AFZZ

13. Carrying Case UBAGC0076AFSA

14.Paper Bag, Unit SSAKP0116AFZZ

15.Service Card TCADS0085AFZZ

16. Spacer, Operation Manual SPAKZ0475AFZZ

17. Packing Add., Unit SPAKZ0498AFZZ

18. Packing Add., Unit SPAKZ0509AFZZ

16

MD-MS722H

3

12

15

11

13

1

5

4

14

2

9

10

17

18

8

– 7 –

6

7