Sharp MiniDisc Player MD MT877 User Manual

MD-MT877/MD-MT877C

SERVICE MANUAL

No. S3118MDMT877/

PORTABLE MINIDISC RECORDER

MD-MT877(S)

MODEL MD-MT877C(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.

CONTENTS

Page

SPECIFICATIONS ................................................................................................................................................................. 2

NAMES OF PARTS ............................................................................................................................................................... 3

OPERATION MANUAL .......................................................................................................................................................... 5

DISASSEMBLY .................................................................................................................................................................... 10

REMOVING AND REINSTALLING THE MAIN PARTS ....................................................................................................... 11

ADJUSTMENT ...................................................................................................................................................................... 12

NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 28

TYPES OF TRANSISTOR AND DIODE .............................................................................................................................. 28

BLOCK DIAGRAM ............................................................................................................................................................... 29

SCHEMATIC DIAGRAM ...................................................................................................................................................... 30

WIRING SIDE OF P.W.BOARD ........................................................................................................................................... 32

VOLTAGE ............................................................................................................................................................................ 36

WAVEFORMS OF MD CIRCUIT ......................................................................................................................................... 37

TROUBLESHOOTING ......................................................................................................................................................... 38

FUNCTION TABLE OF IC.................................................................................................................................................... 41

PARTS GUIDE/EXPLODED VIEW

PACKING OF THE SET (MD-MT877(S) FOR U.S.A. ONLY)

This document has been published to be used

for after sales service only.

The contents are subject to change without notice.

SHARP CORPORATION

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MD-MT877/MD-MT877C

NAMES OF PARTS

Main unit

1. Record/Track Mark Button

2. Mode Button

3. Volume/Cursor/Fast Forward/Fast Reverse/

Recording Level/Name Select Button

4. Stop/Power Off/Hold Button

5. Open Lever

6. Display/Character Select Button

7. Edit/Auto Mark/Time Mark Button

8. Play/Pause Button

9. Enter/Fast Play/Synchro Button

10. Bass/Delete Button

11. Rechargeable Battery Cover

12. Handstrap Holder

13. Optical/Line Input Jack

14. Microphone Input Jack

15. Remote Control/Earphones/Line Output Jack

Main unit display panel

1. Level Meter

02. Record Indicator

03. Synchro Recording Indicator

04. Operation Indicator

05. Long-play/Recording Mode Indicator

6. Character/Time Information Indicator

7. Repeat Indicator

8. Battery Indicator

9. Random Indicator

10. Track Number Indicator

11. TOC Indicator

12. Disc Name Indicator

Yellow-

green

3-color LED

Various modes are indicated with three colors of lights.

Orange

Blue

Charging

Refresh

Lighting starting with yellow-green light.

Extinguishing starting with orange light

after all the lights are lit.

Playback

Flashing the color of the activated play-

back mode.

Recording

Flashing the color of the activated re-

cording mode.

Fast Forward Flashing starting with yellow-green light.

Fast Reverse Flashing starting with orange light.

Volume (+)

Volume (–)

Lighting starting with yellow-green light.

Extinguishing instantly starting with or-

ange light after all the lights are lit.

TOC

Reading: flashing at random.

– 3 –

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MD-MT877/MD-MT877C

Remote control unit

1 2

1. Earphones Jack

2. Fast Forward/Fast Reverse Button

3. Display Button

4. Play Mode Button

5. Sound/Track Mark Button

6. Stop/Power Off Button

7. Play/Pause Button

8. Volume Button

9. Hold Switch

7 8

Remote control display panel

2 3

1. Record Indicator

02. Track Number Indicator

03. Operation Indicator

04. Character/Time Information Indicator

05. Battery Indicator

06. Random Indicator

07. Synchro Recording Indicator

08. Total Track Number Indicator

09. Long-play/Recording Mode Indicator

10. Repeat Indicator

Battery charger

1. Remote Control Holder

(You can hang the remote control on it.)

2. Lock Detector

3. Hook For Fixing The Main Unit

4. Charge/Operation Switch

5. Stand

6. AC Adaptor Connecting Jack

CHARGE

OPERATION

– 4 –

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MD-MT877/MD-MT877C

OPERATION MANUAL

Using with the Rechargeable Battery

Charging

Do not force the

battery cover

open too far.

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.

Insert the rechargeable battery.

Move the Charge/Operation switch to

charge mode.

Place the portable MD into the battery

charger and connect the AC adaptor.

AC 120V

60Hz

●

After the rechargeable battery is charged or used, it will

get slightly warm. This is normal.

When the portable MD is turned on or operating, the bat-

tery will not be charged.

Charge

mode

To the DC IN

5V jack

Checking Displays

Checking the remaining amount of

battery level

The remaining amount of battery level is shown

by the battery indicator (

) during operation.

How to read the battery indicator

When the battery

low is very low

When the battery

level is high

● When the battery is completely discharged, the battery

indicator will flash. Recharge the battery or replace the

alkaline battery with a new one.

● When the battery has run completely out, “BATT EMPTY

(LoBATT)” will appear. Then, the power will be discon-

nected automatically.

Notes:

● If you use the battery which you stopped charging half-

way, “

” may appear. It does not mean that the bat-

tery is completely charged.

● The battery indicator will not correctly display the remain-

ing capacity for approximately 20 seconds after the power

has been turned on.

● When theAC adaptor or a separately available car adap-

tor is used, the battery indicator will not be shown.

● The number of bars shown in the battery indicator may

increase or decrease, depending on the operation be-

ing performed. This is normal.

– 5 –

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MD-MT877/MD-MT877C

Error Messages

ERROR MESSAGES

MEANING

REMEDY

BATT EMPTY

(LoBATT)

BLANK MD

(BLANK)

● The battery is run down.

● Nothing is recorded.

● Charge the rechargeable battery or replace the alka-

line battery (or use the AC adaptor for power).

● Replace the disc with a recorded disc.

Can’t COPY

(Can’tC)

● You tried to record from a copy prohibited ● Record using the analog cable. (MD-MT877(S))

● Record using the analogue cable. (MD-MT877C(S))

MiniDisc.

Can’t EDIT

(Can’tE)

● A track cannot be edited.

● Change the stop position of the track and then edit it.

Can’t READ *

(Can’tS)

● The disc data cannot be read because the disc ● Reload the disc.

is damaged.

● Replace it with another recorded disc.

(Can’tT)

(Can’tU)

Can’t REC

(Can’tR)

● Recording cannot be performed correctly due to ● Re-record or replace it with another recordable disc.

vibration or shock.

Can’t STAMP

Can’t WRITE

(Can’tW)

● Stamp function does not work.

● Cannot save the TOC information correctly to a ● Replace the disc with another recordable disc.

MiniDisc. (A large portion of the disc has been

● Check the number of tracks.

damaged.)

CHARGEmode ● The Charge/Operation switch is not set to the ● Set the Charge/Operation switch to the operation mode.

operation mode when using this unit with the AC

adaptor.

DEFECT

(DEFECT)

DISC FULL

Er-MD **

(ErMD*)

● The disc is scratched.

● If the sound you hear is not right, record again.

● Replace the disc with another recordable disc.

● Replace it with another recordable disc.

● The disc is out of recording space.

● The microprocessor has reported a system fault ● To have it repaired, go to the distributor where you pur-

and the unit is out of order.

chased the unit.

HOLD

(HOLD)

● The unit is in the hold mode.

● Return the HOLD switch to its original position.

LOCKED

(Can’tLOCK)

● You removed a MiniDisc while recording or ● Turn off the power and remove the MiniDisc.

editing.

Error Messages : continued

ERROR MESSAGES

MEANING

REMEDY

NO DISC

NO SIGNAL

(noSIG.)

● A disc has not been loaded.

● Poor connection of the digital cable.

● No output signal comes out from the connected

unit to playback.

● The input signal has improper sampling fre-

quency.

● Load a disc.

● Connect the digital cable securely.

●

If the portable CD player has a function to prevent sound

skips, deactivate it.

● Playback with the connected unit.

PLAY MD

(PLAYmd)

POWER ?

● You recorded on a playback-only disc.

●

Replace it with a recordable disc.

● The battery charger is defective.

● To have it repaired, go to the distributor where you

purchased the unit.

PROTECTED

●

The write protection tab of a MiniDisc is set to

the protected position.

You tried to record on a playback-only disc.

●

Move the write protection tab back to its original position.

● Replace it with a recordable MiniDisc.

SORRY

(Sorry)

● Since a track number is currently being located ● Wait for a while and try the operation again.

or updated, the unit cannot accept your com-

mand.

TEMP OVER

(TEMP!)

● The temperature is too high.

● Turn off the power, and wait for a while.

TOC FORM **

(Tform**)

● There is an error in the recording signal.

● Erase all of the tracks, and then record again.

TOC FULL

● There is no space left for recording character ● Replace it with another recordable disc.

information (track names, disc names, etc.).

Tr. Protect

? DISC

(? DISC)

● The track has been protected from being erased. ● Edit the track with the device on which it was recorded.

● A disc which contains data other than music was

played.

● A disc which contains non-music data cannot be played.

● There is an error in the signal recorded on the ● Replace it with another recorded disc.

disc.

● Stamping is not possible.

● Retry.

(

) : Error messages seen on the remote control.

Number or symbol appears in * position.

– 6 –

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MD-MT877/MD-MT877C

MiniDisc System Limitations

The unit may have the following symptoms while recording or editing. The unit is not out of order.

SYMPTOM

LIMITATIONS

“DISC FULL” or “TOC FULL” appears

even though the MiniDisc still has re-

cording time left.

More than 255 tracks (maximum) cannot be recorded regardless of the re-

cording time.

If the MiniDisc is recorded or edited repeatedly or if it has scratches (record-

ing skips scratched parts), you may not be able to record the maximum

tracks above.

The remaining recording time does not

increase even though you erased tracks.

The unit does not count non-recorded portions that last 12 or fewer seconds

to display the remaining recording time. The time may not increase even if

you erase short tracks.

The total of the recorded time and the

remaining time does not match the maxi-

mum recordable time.

One cluster (approximately 2 seconds) is the minimum unit for recording.

For example, a 3-second track uses 2 clusters (approximately 4 seconds).

Therefore, the actual recordable time may be shorter than the displayed

time.

Combine function does not work.

Sound skips in fast reverse/forward.

A MiniDisc on which recording and editing are repeated may not allow the

combine function.

One track is divided and recorded in separate places on a repeatedly re-

corded or edited MiniDisc.

Sound may skip.

A track number is created in the middle

of a track.

A track number may be created if there are scratches or dust on the MiniDisc.

Troubleshooting

Many potential “problems” can be resolved by the owner without calling a service technician.

If something seems to be wrong with this product, check the following before calling your authorized SHARP dealer or

service center.

PROBLEM

CAUSE

PROBLEM

CAUSE

The MiniDisc can-

not be ejected.

●

Has the track number or character

information been updated on the

disc yet?

Is the unit in the recording or edit-

ing mode?

The unit does not

turn on.

●

Is the AC adaptor disconnected?

Is the battery exhausted?

Is the unit in the hold mode?

Has condensation formed inside the

unit?

●

Is the unit being influenced by me-

chanical shock or by static electric-

ity?

Recording and

editing are im-

possible.

●

Is the MiniDisc protected against

accidental erasure?

Is the unit connected properly to the

other equipment?

Is the AC adaptor unplugged or did a

power failure occur while recording or

editing?

Is the unit in the hold mode?

Is an optical signal being output from

the stereo system?

No sound is

heard from the

earphones.

●

Is the volume set too low?

Is the remote control unit or the ear-

phones plugged in?

Are you trying to play a MiniDisc with

data on it instead of a MiniDisc contain-

ing music?

●

Read the operation manual for the

stereo system.

●

Is the unit in the hold mode?

Is the battery exhausted?

Is the remote control unit plug or the

earphones plug inserted firmly?

When the opera-

tion buttons are

pressed, the unit

does not respond.

The battery cannot

be charged.

●

Is the select switch for charging/

operation set on the charging side?

Is the jack clean?

●

Is the battery exhausted?

Is the unit being subjected to exces-

sive vibration?

Some sounds

are skipped.

Nothing appears

on the remote

control display.

Is the remote control display set to

“LIGHT OFF”?

– 7 –

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MD-MT877/MD-MT877C

Insert a MiniDisc

Inserte un minidisco

2 Connect the AC adaptor

Conecte el adaptador de CA

Insert according to the direction of the arrow.

Insértelo de acuerdo con la dirección de la flecha.

AC 120V, 60 Hz

120V CA, 60Hz

RELEASE

LOCK

To an AC outlet

A un tomacorriente

de CA

Slide the OPEN lever to re-

lease the compartment door.

Insert a MiniDisc as shown.

To the DC IN 5V jack

A la toma DC IN 5V

Inserte un minidisco como se

muestra.

Deslice la palanca OPEN para

abrir la puerta del comparti-

miento.

Insert securely, all the way in.

Insértelo con seguridad a fondo.

Close the compartment.

Cierre el compartimiento.

Move the Charge/Operation

switch to Charge mode (RE-

LEASE).

Move the Charge/Operation

switch to Operation mode

(LOCK).

Lift it up.

Levantelo.

Mueva el selector de carga/

operación al modo de carga

(RELEASE).

Mueva el selector de carga/

operación al modo de operación

When you record on a MiniDisc,

check that the erase prevention tab

is set to the “recordable” position.

(LOCK)

Plug the AC adaptor.

Enchufe el adaptador de CA.

Insert the portable MD into

the battery charger.

Inserte el MD portátil en el

cargador de baterías.

Cuando desee grabar en un

minidisco, compruebe que la

lengüeta de protección contra

borrado esté colocada en la posición

para "poder grabar".

Recording

prevented

Recordable

Before using the unit with a rechargeable battery, the battery has to be charged. Refer

to “Using with the rechargeable battery”.

Para poder

grabar

Para no poder

grabar

Antes de emplear el aparato con una batería recargable, se deberá cargar la

batería. Consulte el apartado de "Empleo con la batería recargable".

Preparation for use

Preparación para su utilización

Connection

Conexión

The unit does not work if the • / –HOLD button is set to HOLD.

Este aparato no funciona si el botón • / –HOLD está puesto en HOLD.

Red: To Right

Rojo: A la

derecha

OPTICAL/

LINE IN

Press the • / –HOLD button for 2 seconds or more.

Pulse el botón • /–HOLD durante 2 o más segundos.

White: To Left

Hold

Retención

Released

Liberación

Blanco: A la

izquierda

LINE OUT

To a stereo system with “LINE OUT” or “AUDIO OUT”

jacks (See left. Analog connection)

Note:

RIGHT LEFT

If the audio system has only one pair of jack then they are usually

input only and recording via this connection is not possible.

Operation mode

A un sistema estéreo provisto de tomas de salida de

línea "LINE OUT" o de salida de audio "AUDIO OUT"

(Vea a la izquierda, Conexión analógica)

Modo de operación

Nota:

For operations

Para operaciones

Si el sistema de audio sólo tiene un par de tomas, normalmente

son sólo de entrada y no puede realizarse la grabación mediante

esta conexión.

Move it to operation mode when playing back or recording.

Muévalo a la posición del modo de operación para la reproducción o grabación.

CAUTION:

It is not recommendable to put the MiniDisc into a rear

pocket, as this may damage the product when sitting.

PRECAUCIÓN:

No se recomienda ponerse un minidisco en el bolsillo

trasero del pantalón, porque podría dañarlo al sentarse.

– 8 –

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MD-MT877/MD-MT877C

Recording

Grabación

Check that the unit is connected to the stereo system.

Compruebe que el aparato esté conectado al sistema estéreo.

Press the PAUSE button on the stereo system to enter the play-

back pause mode at the point you wish to start recording.

Pulse el botón PAUSE del sistema estéreo para entrar en el modo de pausa

de reproducción en el punto en el que desee iniciar la grabación.

Press the MODE button repeatedly to select the recording mode.

Pulse repetidamente el botón MODE para seleccionar el modo de grabación.

Press the

Pulse el botón

button to start recording.

para iniciar la grabación.

Begin playback on the stereo system, the output will be recorded.

Inicie la reproducción del sistema estéreo, y se grabará la salida.

To stop recording

Press the • / :OFF button.

When recording stops, “TOC” appears

(Table Of Contents). While “TOC” ap-

pears, the MiniDisc recorded contents

have not yet been updated.

To update the recorded contents

of the MiniDisc

Press the • / :OFF button while in

the stop mode.

The power turns off after recorded

contents have been updated on the

MiniDisc.

Press the REC button.

Pulse el botón REC.

Begin playback on the stereo system connected to this unit.

Inicie la reproducción en el sistema estéreo conectado a este aparato.

Para detener la grabación

Pulse el botón • /:OFF.

Cuando se detenga la grabación,

aparecerá “TOC” (índice). Mientras

aparece “TOC”, aún no se habrá

actualizado el contenido grabado en el MD.

Press the

button to adjust the recording level.

Para actualizar el contenido

grabado del MD

Pulse el botón • /:OFF en el modo de

parada.

La alimentación se desconectará después

de haber actualizado el contenido grabado

en el MD.

Adjust the recording level so that the maximum sound volume from the

source makes the reading swing somewhere between –4 dB and 0 dB.

Pulse el botón

para ajustar el nivel de grabación.

Ajuste el nivel de grabación para que el volumen de sonido máximo de la fuente

produzca una indicación de entre –4 dB y 0 dB.

Level meter indicator

Indicador del medidor de nivel

TOC display

Visualización

TOC

0dB

4dB

Playing

Reproducción

Insert the earphones plug firmly into the earphones jack on

the remote control unit.

Inserte firmemente la clavija de los auriculares en la toma de auriculares del

controlador remoto.

Plug the remote control into the jack on the unit.

Enchufe el controlador remoto a la toma del aparato.

Insert a MiniDisc.

Inserte un MD

Press the

Pulse el botón

button.

To stop playback

Para detener la reproducción

Pulse el botón • /:OFF. (Controlador

remoto: pulse el botón .)

Press the • / :OFF button (Remote

control: press the button).

Si el aparato no se utiliza durante un

mínimo de 2 minutos en el modo de

parada, la alimentación se desconectará

automáticamente.

If the unit is not operated for at least 2

minutes while in the stop mode, the

power will shut off automatically.

– 9 –

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MD-MT877/MD-MT877C

DISASSEMBLY

(B1) x 2

ø 1.4 x 2 mm

Cares before disassembling

Top Cabinet

(A1) x 2

ø 1.4 x 2 mm

When assembling the machine after disassembling or

repair, observe the following requirements so as to ensure

safety and performance.

(A1) x 1

ø 1.4 x 2 mm

1. Remove the batteries from the machine, and take out the

mini-disc.

2. When assembling after repair, be sure to position the

wires in the same location.

Use the specified screws to fix the cabinet and the

mechanism unit. The use of the screws with length other

than specified may cause contact with the mechanism

unit resulting in malfunction.

3. When repairing, pay close attention so not to damage the

IC from static electricity.

O_OP_PE_EN_N

(B1) x 2

ø 1.4 x 2 mm

Bottom Cabinet

EJECT

Knob

OPEN

(A1) x 1

ø 1.4 x 2 mm

(A1) x 1

ø 1.4 x 2 mm

PROCEDURE

FIGURE

REMOVAL

STEP

Bottom Cabinet 1. Screw ..................... (A1) x5 10-1

Figure 10-1

Top Cabinet

Main PWB

1. Open the Top cabinet.

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

3. Flexible PWB.......... (B2) x1 10-2

10-1

(C2) x 1(1*)

(B2) x 1

1. Open the rechargeable

battery compartment of the

direction indicated by arrows.

2. Screw .................... (C1) x1

3. Flexible PWB......... (C2) x2

10-2

Main PWB

(C2) x 1

Battery

Cover

pull

(C1) x 1

ø 1.4 x 2.5 mm

MD Mechanism 1. Pull the main frame to the A 10-3

direction and remove the MD

pull

mechanism upward.

2. Screw .................... (D1) x1

LCD PWB

1. Screw...................... (E1) x6 10-4

2. Hook ....................... (E2) x4

O P E N

Main Frame

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.

(E1) x 6

ø 1.4 x 2 mm

Figure 10-2

MD Mechanism

(E2) x 4

LCD PWB

OPEN

Main Frame

(D1) x 1

ø 1.4 x 1.5 mm

Top Cabinet

Figure 10-3

Figure 10-4

– 10 –

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MD-MT877/MD-MT877C

REMOVING AND REINSTALLING THE MAIN PARTS

Removethemechanismaccordingtothedisassemblingmeth-

ods 1 to 4. (See Page 10.)

How to remove the spindle motor (See Fig. 11-1.)

1. Remove the solder joints (A1) x 4 of flexible PWB.

2. Remove the screws (A2) x 3 pcs., and remove the spindle

motor.

(A2) x 3

ø 1.4 x 3 mm

Spindle Motor

How to remove the lift motor (See Fig. 11-2.)

1. Remove the solder joints (B1) x 2 of lift motor lead wire.

2. Remove the screw (B2) x 1 pc., and remove the lift motor.

Note:

Solder joints

(A1) x 4

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. 11-3.)

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

gear (C2) x 1 pc.

2. Remove the screws (C3) x 2 pcs.

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

remove the sled motor.

MD Mechanism

Figure 11-1

Note:

Take care so that the motor gear is not damaged.

(If the gear is damaged, noise is caused.)

(B2) x 1

ø 1.4 x 3.8 mm

Howtoremovethemagnetichead(SeeFig.11-4.)

1. Remove the screws (D1) x 2 pcs. of the magnetic head and

theopticalpickup, andremovethesolderjoints(D2)x2pcs.

of the head flexible plate.

Lift Motor

Note:

Mount carefully so as not to damage the magnetic head.

Solder Joints

(B1) x 2

How to reinstall the optical pickup

(See Fig. 11-4.)

MD Mechanism

1. Remove the screw (E1) x 1 pc., and remove the grip spring.

2. Remove the screw (E2) x 1 pc. to remove the thrust

spring, and remove the drive screw and the optical

pickup from MD mechanism.

Figure 11-2

Then, remove the drive screw from the optical pickup.

(C3) x 2

ø 1.4 x 1.2 mm

Sled

(E1) x 1

ø 1.4 x 1.8 mm

Motor

(C1) x 1

(C2) x 1

Grip Spring

(D1) x 2

Drive

Screw

ø1.4 x 1.8 mm

(C4) x 3

Solder

Joints

(D2)x2

Solder Joints

(E2) x 1

ø 1.7 x 3.5 mm

Optical Pickup

Magnetic

head

Thrust

Spring

MD Mechanism

Figure 11-3

MD Mechanism

Figure 11-4

– 11 –

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MD-MT877/MD-MT877C

Test disc

ADJUSTMENT

MD adjustment needs two types of disc, namely record-

ingdisc(lowreflectiondisc)andplayback-onlydisc(high

reflection disc).

Type

Test disc

Parts No.

MMD-110

High reflection disc

88GMMD-110

(TEAC Test MD)

MMD-213A

(TEAC Test MD)

Low reflection disc

88GMMD-213A

Recording

minidisc disc

UDSKM0001AFZZ

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)

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

Test mode: Perform it with the remote control.

(1) Press and hold the "PLAY MODE" button on the remote control

and press the "PLAY" button.

(1) Set the port as follows.

TEST1 : "Low"

(2) Release only the "PLAY MODE" button.

(3) Press and hold only the "PLAY" button and press the "VOL-

UME–" button.

(4) Normal mode setting initialization (BASS setting, VOLUME

setting, etc.)

TEST0 : "High"

(2) Press the PLAY button in the standby state (it is allowed to

close the disc lid or to connect the power supply).

(3) Test Mode STOP [ T E S T _ ]

(5) Test Mode STOP [ T E S T _ ]

(6) Press "VOLUME+" to check the microcomputer version.

(7) Press "VOLUME–" to light up all the LCDs.

Shipping setting method

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.

(3) Change to standby state

(1) Insert the rechargeable battery. Do not close the compartment.

(2) Close the battery lid twice in succession while pressing the

VOLUME– button and the PLAY button on the main unit at the

same time. (Turn on and off the power twice)

(3) Make sure the display changes from [INIT] to [BYE OK].

Test Mode

1. AUTO 1 Mode

• Perform preliminary automatic adjustment.

• If the combination of mechanism and pickup

PWB has been changed, be sure to start from

AUTO1.

6. MANUAL 2 Mode

• Temperature is displayed.

• Seeing the displayed adjustment value, perform

ATT (attenuator) manual adjustment.

• Continuous playback is performed

(error rate display, jump test).

2. AUTO 2 Mode

• Perform ATT (attenuator) automatic adjustment.

• Perform continuous playback (error rate display,

jump test)

7. ERROR INFORMATION • Error information is displayed.

Mode

• Error information is initialized

3. TEST-PLAY Mode

• Continuous playback from the specified address

is performed.

• 1 line, 10 lines or 100 steps manual jump is

8. NORMAL Mode

• The mode is changed from the TEST mode to

the normal mode without adjustment.

• In the normal mode the internal operation mode,

performed.

memory capacity, etc. areindicated.

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

rate display (groove section)

• In the normal mode both temperature correction

and posture correction are performed.

• The temperature correction is performed only when

servo start is performed, but the posture correction

is not performed during continuous playback.

9. EEPROM Mode

• Factors of digital servo are changed manually.

• Cut-off frequency of BASS1, BASS2 and BASS3

is selected manually.

4. TEST-REC Mode

• Continuous record from the specified address

is performed.

• Temperature detection terminal voltage is

measured, and the reference value is set.

• Defaults are selected and set.

• 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.

• Setting of EEPROM protect area is updated.

5. MANUAL 1 Mode

• Temperature is displayed.

• Seeing the displayed adjustment value, perform

preliminary manual adjustment.

(Error rate indication, jump test)

– 12 –

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MD-MT877/MD-MT877C

Operation in each TEST mode

1. AUTO1 Mode

5. TEST-PLAY Mode

• When the STOP button is pressed while the AUTO1 menu appears

or during automatic adjustment, the mode changes to the TEST

mode stop state. At this time the adjustment value is not output.

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

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

adjustment error

• 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.

• When the PLAY button is pressed while ADJ. OK is displayed, AU-

TO2 is executed.

• Whenever the DISP button is pressed in the TEST-PLAY menu, the

target address changes as follows.

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

When the PLAY button is pressed while a target address is dis-

played, continuous playback is performed after searching that

address.

• Each time the MODE button is pressed while the TEST-PLAY mode

target address is displayed, the digit which is changed by pressing

the FAST FORWARD/REVERSE button is changed as follows.

0032 — 0032 — 0032 — 0032 —

2. AUTO2 Mode

• When the STOP button is pressed while the AUTO2 menu appears

or during automatic adjustment, the mode changes to the TEST

mode stop state. At this time the adjustment value is not output.

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

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

_PLAY is executed.

• When the FAST FORWARD button is pressed in the TEST-PLAY

mode target address is displayed, the digit of address specified by

the MODE button is set to +1h. (0 to F)

• When the FAST REVERSE button is pressed in the TEST-PLAY

mode target address is displayed, the digit of address specified by

the MODE button is set to -1h. (0 to F)

* When the FAST FORWARD/REVERSE button is held down, the

setting changes continuously, one cycle being 100 ms.

• When the BASS button is pressed in the continuous playback mode,

the number of jump lines changes as follows.

3. MANUAL1 Mode

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

• When the VOLUME+ button is pressed during adjustment, the sett-

ing increases, and the new setting is output.

• When the VOLUME– button is pressed during adjustment, the sett-

ing decreases and the new setting is output.

• If the VOLUME+/– button is held down, the setting changes continu-

ously with 100 ms cycle.

*In this operation, the setting change is performed for each digit. The

digit is changed by pressing the MODE button.

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

lights.

1 — 10 — 100 step — 1

* After the number of jump lines is indicated for one second, the

address indication is restored.

[

T R ] or [ 100 stp ]

• When the FAST FORWARD button is pressed in the continuous

playback mode, the specified number of lines is jumped in the FWD

direction.

• When the STOP button is pressed during MANUAL1 menu or mea-

surement or adjustment, the state is changed to the TEST mode

stop state.

• When the FAST REVERSE button is pressed in the continuous

playback mode, the specified number of lines is jumped in the REV

direction.

* When the FAST FORWARD/REVERSE button is held down, jump

is repeated every approx. 100 ms.

4. MANUAL2 Mode

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

• When the VOLUME+ button is pressed during adjustment, the sett-

ing increases, and the new setting is output.

• When the VOLUME– button is pressed during adjustment, the sett-

ing decreases and the new setting is output.

• Whenever the DISP button is pressed in the continuous playback

mode, the indication changes as follows.

• If the VOLUME+/– button is held down, the setting changes continu-

ously with 100 ms cycle.

*In this operation, the setting change is performed for each digit. The

digit is changed by pressing the MODE button.

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

lights.

• When the STOP button is pressed during MANUAL2 menu or mea-

surement or adjustment, the state is changed to the TEST mode

stop state.

* Pre-mastered disc

Continuous playback

(SUBQ address indication)

Continuous playback

(C1 error indication)

[ S Q

[ C E

[ S Q

]

Continuous playback

(SUBQ address indication)

• 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".

* Recordabl disk

Continuous playback

(ADIP address indication)

Continuous playback

(C1 error indication)

Continuous playback

(ADIP error indication)

Continuous playback

(ADIP address indication)

[ A P

[ C E

[ A E

[ A P

]

– 13 –

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MD-MT877/MD-MT877C

6. TEST-REC Mode

7. NORMAL 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 STOP button is pressed while the NORMAL menu

appears, the mode changes to the TEST mode stop state.

• Indication during operation

• Whenever the DISP button is pressed in the TEST-REC menu, the

target address changes as follows.

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

When the PLAY button is pressed while a target address is dis-

played, continuous playback is performed after searching that

address.

• Whenever the MODE button is pressed in the TEST-REC mode

target address is displayed, the digit which is changed by the FAST

FORWARD/REVERSE button changes as follows.

0032 — 0032 — 0032 — 0032 —

Indication of memory capacity on main unit LCD

[

] + Level meter

: Internal mode

: Address (Cluster section)

: Address (Sector section)

• Selection of sound volume, BASS, etc. is possible (without indica-

tion)

• Recording is also possible.

• If the STOP button is pressed during operation in the NORMAL

mode, the NORMAL mode is cancelled, and the power is turned off.

• When the FAST FORWARD button is pressed in the TEST-REC

mode target address is displayed, the digit of address specified by

the MODE button is set to +1h.(0 to F)

• When the FAST REVERSE button is pressed in the TEST-REC

mode target address is displayed, the digit of address specified by

the MODE button is set to -1h. (0 to F)

8. Error data display Mode

• Reversing when FAST REVERSE 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

* When the FAST FORWARD/REVERSE button is held down, the

setting changes continuously, one cycle being 100 ms.

• When the VOLUME+/– 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 ad-

menu appears, the error data is initialized.

: Error Code

[ C L E A R _ ]

•

dress indication is restored. [ R P W _

: Address

]

•

: Laser power cord

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

protected state.

Explanation of error history code

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

32h : P-TOC read failure

Error messages

Can't READ

The details '

'f': Focus

'a': Servo adjustment

's': Track such

'r': TOC information reading

'u': UTOC information reading

'w': At the time of data writing

'p': Spindle start

42h : U-TOC read failure

44h : U-TOC write data write disabled/read check error

45h : U-TOC write test failure

52h : SD write data write disabled

Er-MD

The details '

'41': UTOC light test error

72h : EEPROM data read check sum error

73h : Record head drive disabled (by EJECT lever)

91h : Ambient temperature is higher that the allowable temperature

'80': EEPROM information reading error

– 14 –

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MD-MT877/MD-MT877C

EEPROM (IC402) writing procedure

1. Procedure to replace EEPROM and write initial

value of microcomputer in EEPROM

(1) Replace EEPROM.

(7) Press the "BASS" button, and press 1 time the "FAST

REVERSE" button.

(2) Refer to the latest EEPROM data list.

(3) Start the test mode. (Refer to page 12 "Entering the

TEST mode".)

(4) Version display (At the time of settlement of the test

mode by the button operation.)

[ E E P R O M ]

(8) 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 VOLUME+ or VOLUME– button.

(9) Set the temperature reference. (Refer to the Tempera-

ture reference setting method.)

[ V e r .

]

EEPROM version (c ~ z)

Microcomputer ROM

version

(10) Set according to the EEPROM DATA LIST.

(11) Press the STOP button.

(5) The whole LCD lights.

(6) Test mode stop state.

[

T E S T

]

(12) Press the STOP button.

(13) After data is written in EEPROM, turn off power .

[

T E S T

]

2. Temperature reference setting method

[1] Measurement, calculation and setting procedure

(1) Set the TEST mode.

(4) At the ambient temperature, determine the tempera-

ture corrected value from the temperature measure-

ment value correction table.

(5) Determine the temperature reference, using the follow-

ing formula.

• Temperature reference = Microcomputer TEMP input

AD value + Temperature corrected value.

(6) Set the temperature reference value by button opera-

tion, and check whether the temperature code indica-

tion corresponds to "Temperature Code Identification

Table".

(2) Start the EEPROM mode 'Temp' menu.

• Button operation in order of BASS, FAST REVERSE x

1 time, PLAY, PLAY in the test mode STOP state.

• 'TM$$%%' is displayed. ($$= Temperature code, %%

= Temperature reference)

(3) Once press FAST FORWARD, and determine the dis-

played microcomputer TEMP input AD value.

• 'TPin##' is displayed. (## = TEMP input AD value)

[3] Temperature code identification

[2] Temperature measurement value correction table

Check that the temperature code indicated after the servo

control corresponds to the temperature limits below

Ambient

temperature

Temperature

correction

Center

temperature

Ambient

temperature

Temperature

correction

+ 8^oC ~ +10^oC

+11^oC ~ +13^oC

+14^oC ~ +16^oC

+17^oC ~ +19^oC

+20^oC ~ +22^oC

+23^oC ~ +25^oC

+26^oC ~ +28^oC

+29^oC ~ +30^oC

+31^oC ~ +33^oC

- 05h

- 04h

- 03h

- 02h

- 01h

± 00h

+ 01h

+ 02h

+ 03h

+ 9.1^oC

+ 12.0^oC

+ 14.9^oC

+ 17.8^oC

+ 20.7^oC

+ 23.6^oC

+ 26.9^oC

+ 29.4^oC

+ 32.3^oC

Center

temperature

- 9^oC ~ +10^oC

+ 3^oC ~ +21^oC

+15^oC ~ +33^oC

+26^oC ~ +43^oC

08h

07h

06h

05h

+ 0.5^oC

+ 12.0^oC

+ 23.6^oC

+ 35.0^oC

– 15 –

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MD-MT877/MD-MT877C

EEPROM DATA LIST (EEPROM version C)

Fucus setting

Spindle setting

Item display

Set values

Item display

SPG _

SPi

Set values

30H

FG1 _

FG2 _

FF0 _

FF1 _

FF2 _

44H

70H

10H

70H

E8H

10H

48H

EAH

EDH

09H

06H

0FH

28H

18H

40H

38H

66H

84H

50H

58H

9AH

62H

SPm _

SPo _

PGM _

SP1 _

SP2 _

SP3 _

SP4 _

SP5 _

Sp2 _

Sp5 _

SD1 _

SD2 _

SPK _

MPG _

SPL _

SPW _

SPB _

4FH

E0H

10H

Ff0

Ff1

Ff2

60H

F2H

10H

FZH _

FLn _

FLp _

DJG _

FSS _

FTS _

FSB _

FTB _

FGM _

TVG _

TO1 _

TO5 _

TOR _

60H

10H

7FH

EBH

28H

60H

0FH

66H

SRi

C0H

9AH

7BH

SRm _

SRo _

Tracking setting

Item display

TG1 _

Set values

14H

2AH

10H

70H

E0H

10H

40H

E4H

00H

20H

12H

20H

0DH

67H

34H

00H

3AH

48H

24H

30H

0EH

65H

02H

00H

F4H

20H

Sled setting

Item display

SKS _

SKL _

SLC _

STL _

STM _

STE _

SDV _

SJP _

WTm_

SRV _

SLT _

MVS _

SLS _

SKE _

SDE _

Set values

7FH

TG2 _

TF0 _

7FH

TF1 _

24H

TF2 _

07H

Tf0

Tf1

Tf2

42H

A6H

60H

TFS _

TBo _

03H

18H

TBt

TKo _

TKt

TDo _

TDt

54H

5CH

0AH

28H

0EH

1CH

SCo _

SCt _

SCm _

CLp _

CLr

JPI

K10 _

THP _

THG _

TOP _

TOG _

T1P _

– 16 –

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MD-MT877/MD-MT877C

Control setting

BASS setting

Item display

Set values

02H

01H

30H

20H

D0H

4BH

18H

C0H

FEH

A6H

54H

24H

22H

17H

11H

00H

64H

A6H

94H

A0H

C0H

1FH

50H

5AH

00H

D0H

66H

FCH

00H

80H

20H

BFH

02H

16H

00H

81H

80H

00H

80H

00H

Set values

3FH

CT0 _

CT1 _

CT2 _

CT3 _

CT4 _

CT5 _

CT6 _

RC0 _

RC1 _

SYC _

PWL _

DR1 _

DR2 _

B1A _

B1B _

B1C _

B2A _

B2B _

B2C _

B3A _

B3B _

B3C _

00H

1FH

00H

E2H

00H

ADJ.SET setting

Item display

COK _

Set values

28H

IN1

IN2

FAT _

C0H

TAT _

3EH

INH _

DRH _

PLE _

RCE _

ELT _

X2T _

SDF _

CHV _

DRS _

DUP _

RFL _

CG1 _

FB0 _

RST _

R20 _

R21 _

R40 _

R41 _

FBL _

MC2 _

MC4 _

L2H _

L4H _

SPM _

MSL _

US0 _

US1 _

US2 _

CAT _

40H

FAB _

Digital EQ setting

Item display

HQ1 _

HQ2 _

HSG _

HSO _

LQ1 _

LQ2 _

LSG _

LSO _

GQ1 _

GQ2 _

GSG _

EQP _

Set values

90H

11H

FDH

90H

11H

00H

98H

84H

11H

00H

– 17 –

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MD-MT877/MD-MT877C

Do the following when replacing the mechanism, the pickup, the

EEPROM (IC402), the LSI(IC201) or the main PWB unit.

Enter the test mode, move the pickup to the most internal periphery and execute AUTO1.

(Use the disc of MMD-213A.)

A U T O 1

PLAY

(During the spare style automatic adjustment)

A T 1

Normality completion

A D J . O K

PLAY

(During the adjustment that ATT is automatic)

A T 2

Normality completion

A D J . O K

Remote controller P-MODE button

(During the focus balance adjustment)

The indication of RAMDOM

(Adjustment completion)

STOP is pushed

The indication of "TEST"

Move the pickup to the most internal periphery and press the BASS button

(Fast Forward Button)

AUTO2 It is made to carry it out

PLAY

A D J . O K

PLAY

(Continuance is regenerating)

It confirms that an address proceeds

A P # # # #

STOP is pushed

B Y E

Indication disappears

All the supply of the power supply is turned off

O K

(In such cases as the battery)

If you replaced EEPROM, set the EEPROM valume to the final version.

Test Mode Start · Completion methool

• Starting method of the test mode

When the unit is in the stand-by state (with no display), the test mode is started by performing

the following operation using the remote control.

Press the [PLAY] button while pressing the [PLAY-MODE] button, and release the [PLAY-MODE] button

while keeping the [PLAY] button pressed, and press the [VOLUME–] button.

Indication after the start :

: To the test mode stop ([Test mode menu])

T E S T

Performance mode

Playback volume

=Normal

=28

LINE REC volume

Microphone REC volume

Resume setting

=30

=20

=Cancellation

Volume+

: Version indication 2 seconds

EEPROM version

Destination

Volume -

Program version

: LCD all the lighting two seconds

All the lighting

• How to cancel the test mode

: Test mode stop

T E S T

STOP

B Y E

: [OK] or [NG]

B Y E

O K

Check the microcomputer RAM and EEPROM with

the contents of the preliminary adjustment.

Pickup position initialisation

EEPROM contents renewal

POWER OFF

– 18 –

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MD-MT877/MD-MT877C

Change of Tset Mode Menus

BASS

: Test mode stop

T E S T

SKIP UP

SKIP DOWN

Slide internal

periphery move

Slide external

periphery move

SKIP DOWN

A U T O 1

: Pre-automatic adjustment menu

: ATT auto adjustment menu

SKIP UP

SKIP DOWN

A U T O 2

SKIP UP

: Continuous playback menu

P L A Y

SKIP UP

SKIP DOWN

: Continuous record menu

SKIP UP

R E C

: Pre-manual adjustment menu

: ATT manual adjustment menu

M A N U 1

SKIP UP

M A N U 2

SKIP UP

SKIP DOWN

: Pre-adjustment value check menu

: ATT adjustment value check menu

R S L T 1

SKIP UP

SKIP DOWN

R S L T 2

SKIP UP

: Digital input signal monitor menu

D i n M o n

SKIP UP

SKIP DOWN

: Error history display menu

D A T A

SKIP UP

SKIP DOWN

: Test mode normal play menu

N O R M A L

SKIP UP

SKIP DOWN

: EEPROM setting menu

E E P R O M

SKIP UP

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

* When the [VOLUME+] button is pressed in the "TEST MODE STOP" state, the program version

is displayed for 2 seconds

* When the [VOLUME–] button is pressed in the "TEST MODE STOP" state, all the displays

appear for 2 seconds.

Servo Preautomatic Adjustment

: Preautomatic adjustment menu

Adjustment error

PLAY

A U T O 1

: During preautomatic adjustment

A T 1

Adjustment error

Normal end

: Preadjustment error (adjustment value output)

A D J . N G

: Preadjustment normal end (adjustment value output)

A D J . O K

PLAY

: During ATT automatic adjustment

A T 2

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

* Move the pickup lens manually to the innermost periphery before performing the servo

preliminary auto adjustment. (Refer to "Change of test mode menus" for the operation method.)

* "

" is the internal processing number, the meanings of the numbers are as follows.

0 0 : Initial setting

0 2 : ABEF input offset measurement

0 4 : AB input (ABMAXO) level setting

0 5 : Focus ATT tentative setting

0 6 : Pit section EF input level setting

0 7 : COUT level setting for pit section adjustment

0 8 : Sled external periphery move

0 9 : Groove section EF input level setting

1 0 : COUT level setting for groove section adjustment

1 1 : TCRS input level setting

1 2 : Tracking ATT initial setting

1 3 : AB input (LPFABO) level setting

1 4 : Focus ATT initial setting

1 6 : TCRS input offset measurement

* It is necessary for each test mode where servo operation is made to complete the preliminary

adjustment. (Otherwise, "ErADJ." appears.)

* The preliminary adjustment complete state is stored on the EEPROM (protected field).

– 19 –

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MD-MT877/MD-MT877C

Servo ATT Auto Adjustment

: ATT auto adjustment menu

: During ATT auto adjustment

A U T O 2

PLAY

A T 2

Adjustment error

Normal end

: ATT adjustment error (adjustment value output)

A D J . N G

A D J . O K

PLAY

S Q # # # #

A P # # # #

: Continuous playback (high reflection)

: Continuous playback (low reflection)

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

* Move the pickup lens manually to the innermost periphery before performing the servo

ATT auto adjustment. (Refer to "Change of test mode menus" for the operation method.)

* "

" represent the adjustment number as follows.

0 0 : Initial setting

0 3 : Pit section tracking ATT setting

0 4 : Pit section focus ATT setting

0 6 : Sled external periphery move

0 7 : TCRS ATT setting

0 8 : Groove section tracking ATT setting

0 9 : Groove section focus ATT setting

(low reflection only)

Continuous Playback

• Continuous playback from current pickup position

: Continuous playback menu

P L A Y

PLAY

AUTO1 Practice finish?

YES

E r A D J

AUTO2 Practice finish?

AUTO2 Practice

YES

No error?

SQ : Continuous playback (pit section)

AP : Continuous playback (groove section)

# # # # : Address

A D J. N G

S Q # # # #

A P # # # #

• Continuous playback from any address

: Continuous playback menu

P L A Y

DISP

A d 0 0 3 2

: Start address setting

PLAY

: Continuous playback (pit section)

: Continuous playback (groove section)

# # # # : Address

S Q # # # #

A P # # # #

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

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

0 0 3 2

(initial value)

0 3 C 0

0 7 0 0

0 8 A 0

DISP

A d 0 3 C 0

A d 0 0 3 2

A d 0 7 0 0

A d 0 8 A 0

0 9 5 0

DISP

A d 0 9 5 0

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

1st digit (initial value)

2nd digit

3rd digit

MODE

A d 0 0 5 0

MODE

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

when the [FAST FORWARD/REVERSE] button is pressed

* If the [P-MODE] button is pressed in the continuous playback state, the mode is changed to the B-ATT setting

state of the ATT manual adjustment.

: Continuous playback (pit section)

: Continuous playback (groove section)

S Q # # # #

A P # # # #

# # # # : Address

P-MODE

: High-reflection pit section B-ATT (focus) setting

: Low-reflection groove section B-ATT (focus) setting

H B

: ATT setting

L B

– 20 –

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MD-MT877/MD-MT877C

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

the [BASS] button is pressed.

1 (initial value)

BASS

100step

1 0 T R

1 0 0 s t p

1 T R

BASS

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

number of lines occurs in the external periphery direction.

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

* When the [FAST REVERSE] button is pressed in the continuous playback mode, jump of

specified number of lines occurs in the internal periphery direction.

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

• Focus balance Adjustment mode

: Continuous playback menu

T-PLAY Each indication

PLAY

b # # #

: Focus balance Adjustment mode

DISP

: Focus balance

# # # : Jitter error

Others indication

* The focus balance adjustment mode is available only for low reflection discs.

* The RANDOM marker lights up in the focus balance adjustment mode.

* The focus balance (

) can be changed by the VOL UP/DOWN button operation.

* If the PLAY button is pressed in the focus balance adjustment mode, the unit returns to the

continuous playback mode.

Continuous Record

Enter the EEPROM setting mode, and press the FAST FORWARD button.

Change the MSL setting value from 00 to 08 by using CTRL_ (control setting menu).

(If the MSL remains in 00, no signal is recorded.)

• Continuous record from the current pickup position

: Continuous record menu

R E C

PLAY

AUTO1 Practice finish?

YES

E r A D J

AUTO2 Practice finish?

AUTO2 Practice

YES

No error?

: Continuous record

# # # #: Address

A D J. N G

A P # # # #

• Continuous record playback from any address

: Continuous record menu

: Start address setting

R E C

DISP

A d 0 0 3 2

PLAY

: Continuous record

# # # #: Address

A P # # # #

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

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

0 0 3 2

(initial value)

0 3 C 0

0 7 0 0 H

0 8 A 0 H

DISP

A d 0 0 3 2

A d 0 8 A 0

A d 0 3 C 0

A d 0 7 0 0

0 9 5 0 H

DISP

A d 0 9 5 0

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

1st digit (initial value)

2nd digit

3rd digit

MODE

A d 0 0 5 0

MODE

A d 0 0 5 0

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

the [FAST FORWARD/REVERSE] button 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 [VOLUME +/–] button is pressed. (Initial value 0DH)

– 21 –

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MD-MT877/MD-MT877C

Servo Pre-Manual Adjustment

: Pre-Manual Adjustment menu

M A N U 1

PLAY

: Temperature code indication

$ $ : Temperature code

T M P $ $

SKIP UP

SKIP DOWN

: A signal offset (AINO) measurement

: Measurement value

A h

SKIP UP

SKIP DOWN

: B signal offset (BINO) measurement

: Measurement value

B h

SKIP UP

: E signal offset (EINO) measurement

: Measurement value

E h

SKIP UP

: F signal offset (FINO) measurement

: Measurement value

F h

SKIP UP

: Laser ON (play power)

L O N

SKIP UP

SKIP DOWN

: AB signal level measurement (ABMAXO)

: Measurement value

A B

SKIP UP

: A-ATT (focus) tentative setting

: ATT setting

S a

SKIP UP

: B-ATT (focus) tentative setting

: ATT setting

S b

SKIP UP

: Pit section EF signal level measurement (LPFEFO)

: Measurement value

e f

SKIP UP

: Pit section adjustment COUT level setting

: COUT level setting

P C H

SKIP UP

: Groove section EF signal level measurement (LPFEFO)

: Measurement value

e f

SKIP UP

: Groove section adjustment COUT level setting

: COUT level setting

G C H

SKIP UP

: TCRS signal level measurement (TCRSMIO)

: Measurement value

T C

SKIP UP

: E-ATT (tracking) initial setting

: ATT setting

S E

SKIP UP

: F-ATT (tracking) initial setting

: ATT setting

S F

SKIP UP

: AB input level measurement (LPFABO)

: Measurement value

a b

SKIP UP

SKIP DOWN

: A-ATT (focus) initial setting

: ATT setting

S A

SKIP UP

: B-ATT (focus) initial setting

: ATT setting

S B

SKIP UP

: TCRS signal offset (TCRSO) measurement

: Measurement value

T H

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

* If the [BASS] button is pressed in the laser ON state (with no disc or the lid open), laser power

changes as follows.

Play back

Record power

Maximum power

BASS

1 (initial value)

384

L O N

BASS

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

button is pressed.

• In the case of the setup value two digits.

1st digit (initial value)

2nd digit

P-MODE

• In the case of the setup value three digits.

1st digit (initial value)

2nd digit

3nd digit

P-MODE

* In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–]

button is pressed.

* If the [DISP] button is pressed, the display changes as follows.

– 22 –

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MD-MT877/MD-MT877C

• ABMAXO measurement value

: A-ATT (focus) tentative setting

: B-ATT (focus) tentative setting

S a

S b

DISP

: ABMAXO measurement value indication

"1" Mark lighting

A B

• LPFABO measurement value

: A-ATT (focus) tentative setting

: B-ATT (focus) tentative setting

S A

S B

DISP

: LPFABO measurement value indication

"1" Mark lighting

a b

• LPFEFO measurement value

: Pit section adjustment COUT level setting

: Group section adjustment COUT level setting

P C H

G C H

DISP

: LPFEFO measurement value indication

"1" Mark lighting

e f

• LPFEINO/EFMIO measurement value

: E-ATT (tracking) initial setting

S E

DISP

: LPFEINO measurement value indication

"1" Mark lighting

e i

DISP

: EFMIO measurement value indication

"REPEAT", "1" Mark lighting

E F

• LPFFINO/EFMIO measurement value

: F-ATT (tracking) initial setting

S F

DISP

: LPFFINO measurement value indication

"1" Mark lighting

f i

DISP

: EFMIO measurement value indication

"REPEAT", "1" Mark lighting

E F

Servo ATT Manual Adjustment

: ATT manual adjustment menu

M A N U 2

PLAY

: Temperature code indication

T M P $ $

$ $

: Temperature code

SKIP UP

SKIP DOWN

: Laser ON (play power)

L O N

SKIP UP

: Pit section E-ATT (tracking) setting

: ATT setting

P E

SKIP UP

: Pit section F-ATT (tracking) setting

: ATT setting

P F

SKIP UP

: High reflection A-ATT (focus) setting

: Low reflection A-ATT (focus) setting

: ATT setting

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

: TCRS ATT setting

: ATT setting

G C

SKIP UP

:Groove section E-ATT (tracking) setting

: ATT setting

G E

SKIP UP

SKIP DOWN

:Groove section F-ATT (tracking) setting

: ATT setting

G F

SKIP UP

SKIP DOWN

: Low reflection A-ATT (focus) setting

: ATT setting

L A

SKIP UP

: Low reflection B-ATT (focus) setting

: ATT setting

L B

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

* If the [PLAY] button is pressed in the B-ATT setting state, the mode is changed to the continuous

playback mode.

And if the [P-MODE] button is pressed in the continuous playback state, the mode is changed to

the B-ATT setting state of the ATT manual adjustment.

– 23 –

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MD-MT877/MD-MT877C

: High-reflection pit section B-ATT (focus) setting

: Low-reflection pit section B-ATT (focus) setting

: Low-reflection groove section B-ATT (focus) setting

: ATT setting

H B

L b

L B

PLAY

P-MODE

: Continuous playback (pit section)

: Continuous playback (groove section)

# # # # : Address

S Q # # # #

A P # # # #

* If the [BASS] button is pressed in the laser ON state (with no disc or the lid open), laser power

changes as follows.

Playback power

Record power

Maximum power

BASS

L O N

BASS

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

button is pressed.

1st digit (initial value)

2nd digit

3rd digit

P-MODE

MODE

* In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/-]

button is pressed.

* If the [DISP] button is pressed, the display changes as follows.

• LPFABO measurement value

: High-reflection pit section A-ATT (focus) setting

: High-reflection pit section B-ATT (focus) setting

: Low-reflection pit section A-ATT (focus) setting

: Low-reflection pit section B-ATT (focus) setting

: Low-reflection groove section A-ATT (focus) setting

: Low-reflection groove section B-ATT (focus) setting

H A

H B

L a

L b

L A

L B

DISP

: LPFABO measurement value indication

"1" Mark lighting

a b

• TCRSMIO measurement value

: TCRS ATT setting

G C

DISP

: TCRSMIO measurement value indication

"1" Mark lighting

T C

• LPFEINO/EFMIO measurement value

: Pit section E-ATT (tracking) setting

: Groove section E-ATT (tracking) setting

P E

G E

DISP

: LPFEINO measurement value indication

"1" Mark lighting

e i

DISP

: EFMIO measurement value indication

"REPEAT", "1" Mark lighting

E F

• LPFFINO/EFMIO measurement value

: Pit section F-ATT (tracking) setting

: Groove section F-ATT (tracking) setting

P F

G F

DISP

: LPFFINO measurement value indication

"1" Mark lighting

f i

DISP

: EFMIO measurement value indication

"REPEAT", "1" Mark lighting

E F

– 24 –

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MD-MT877/MD-MT877C

Servo Pre-adjustment Value Check

: Pre-adjustment Value Check menu

R S L T 1

PLAY

A H

SKIP UP

: A signal offset measurement value (setting)

: B signal offset measurement value (setting)

: E signal offset measurement value (setting)

: F signal offset measurement value (setting)

SKIP DOWN

B H

SKIP UP

E H

SKIP UP

F H

SKIP UP

T H

SKIP UP

: TCRS signal offset measurement value

: EF signal measurement value

e f

SKIP UP

SKIP DOWN

: TCRS signal measurement value

T C

SKIP UP

a b

SKIP UP

: AB signal input measurement value

: Pit section adjustment COUT level setting

P C H

SKIP UP

G C H

SKIP UP

: Groove section adjustment COUT level setting

: A-ATT (focus) initial setting

S A

SKIP UP

: B-ATT (focus) initial setting

S B

SKIP UP

SKIP DOWN

S E

SKIP UP

: E-ATT (tracking) initial setting

: F-ATT (tracking) initial setting

S F

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

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

button is pressed.

• In the case of the setup value two digits.

1st digit (initial value)

2nd digit

P-MODE

• In the case of the setup value three digits.

1st digit (initial value) 2nd digit

3nd digit

P-MODE

* In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–]

button is pressed.

– 25 –

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MD-MT877/MD-MT877C

Error History Display

• Error history clear

: Error history indication menu

: Error history clear

DISP

D A T A

After one second

C L E A R

• Error history indication

: Error history indication menu

D A T A

PLAY

: Error history 0 indication

$ $ : Error code

E 0 $ $

SKIP UP

SKIP DOWN

: Error history 1 indication

$ $ : Error code

E 1 $ $

SKIP UP

: Error history 2 indication

$ $ : Error code

E 2 $ $

SKIP UP

: Error history 3 indication

$ $ : Error code

E 3 $ $

SKIP UP

: Error history 4 indication

$ $ : Error code

E 4 $ $

SKIP UP

: Error history 5 indication

$ $ : Error code

E 5 $ $

SKIP UP

: Error history 6 indication

$ $ : Error code

E 6 $ $

SKIP UP

: Error history 7 indication

$ $ : Error code

E 7 $ $

SKIP UP

: Error history 8 indication

$ $ : Error code

E 8 $ $

SKIP UP

: Error history 9 indication

$ $ : Error code

E 9 $ $

SKIP UP

SKIP DOWN

: Total recording time

R C

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

ATT Setting Check

: ATT Setting Check menu

R S L T 2

PLAY

P E

SKIP UP

: 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

SKIP DOWN

P F

SKIP UP

G E

SKIP UP

G F

SKIP UP

H A

SKIP UP

: High-reflection B-ATT (focus) setting

: Low-reflection A-ATT (focus) setting

H B

SKIP UP

L A

SKIP UP

: Low-reflection B-ATT (focus) setting

: TCRS-ATT setting

L B

SKIP UP

G C

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

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

button is pressed.

• In the case of the setup value three digits.

1st digit (initial value)

2nd digit

3nd digit

P-MODE

* In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–]

button is pressed.

– 26 –

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MD-MT877/MD-MT877C

Test Mode Normal Playback

: Test mode normal playback menu

N O R M A L

PLAY

: Normal playback mode

@@@@@@

@@@@@@: Mode and address indication

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

EEPROM Setting

• Menu transition

: EEPROM setting menu

E E P R O M

PLAY

SKIP DOWN

: TEMP setting menu

T e m p

SKIP UP

SKIP DOWN

F o c u s

SKIP UP

: Focus setting menu

: Tracking setting menu

: Spin setting menu

T r a c k

SKIP UP

S p i n

SKIP UP

: Sled setting menu

S l e d

SKIP UP

: BASS setting menu

: Adjustment setting menu

B a s s

SKIP UP

A D J S E T

SKIP DOWN

: Digital EQ setting menu

D E Q S E T

SKIP UP

C T R L

SKIP UP

: Control setting menu

SKIP UP

: LSI setting TEST mode menu

L S I I F

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

• TEMP Setting

: Temp setting menu

T e m p

PLAY

: TEMP standard value setup

T M $ $

SKIP UP

: Setup value

$ $ : Temperature code

SKIP DOWN

: TEMP A/D input value indication

T P i n

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

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

"TEMP SETTING menu".

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

1st digit (initial value)

2nd digit

P-MODE

* In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–]

button is pressed.

• Setup except for TEMP

: Each setup menu except for TEMP

Each setup menu

PLAY

: Each setup item except for TEMP

Setup item

: Setup value

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

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

"TEMP SETTING menu".

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

button is pressed.

1st digit (initial value)

2nd digit

P-MODE

* In the specific state the setting changes in the range of "0h to Fh" when the [VOLUME +/–]

button is pressed.

– 27 –

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MD-MT877/MD-MT877C

NOTES ON SCHEMATIC DIAGRAM

• Resistor:

DESCRIPTION

POSITION

REF. NO

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.

SW401

SW901

SWA01

SWA02

SWA03

SWA04

SWA05

SWA06

SWA07

SWA08

SWA09

SWA10

SWA11

SWA12

SWA13

EJECT

OFF—ON

DISC PROTECT

RECORD

PLAY

• Capacitor:

To indicate the unit of capacitor, a symbol P is used: this

symbol P means pico-farad and the unit of the capacitor

without such a symbol is microfarad. As to electrolytic

capacitor, theexpression“capacitance/withstandvoltage”is

used.

(CH), (TH), (RH), (UJ): Temperature compensation

(ML): Mylar type

• The indicated voltage in each section is the one measured

by Digital Multimeter between such a section and the chas-

sis with no signal given.

BASS

EDIT

DISPLAY

VOLUME –

VOLUME +

STOP

MODE

FAST REVERSE

FAST FORWARD

ENTER

• 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.

OPEN/CLOSE

TYPES OF TRANSISTOR AND DIODE

TOP VIEW

F10J2E

(G)

(3)

TOP

VIEW

(D)

(2)

(S)

RN4904

RN4911

2SA17457

2SA1832 GR

2SC4738 GR

2SD1979 S

DTC144 EE

RN1104

RN1444 A

FDN339 N

TOP VIEW

SBE803

HRB0103B

1SS372

1SS361

TOP VIEW

FDG312 P

HN1C01 FU

FTD2017

– 28 –

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MD-MT877/MD-MT877C

J702

MIC IN

J703

EARPHONES REMOTE CONTROL

TERMINAL

J703

J701

(READY FOR

OPTICAL IN LINE IN PLUG/IN POWER)

2,5,6,7

VCC

Figure 29 BLOCK DIAGRAM

– 29 –

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MD-MT877/MD-MT877C

C109

C111

MAIN PWB-A

TP202

C114

R111

C112

0.1

5P(CH) 12K

TP139

EFMO

PLAYBACK SIGNAL

RECORD SIGNAL

48 47 46 45 44 43 42 41 40 39 38 37

1234 1+2

CK203

CK202

C131

0.1

EFMAGC

CK111

CK112

CK113

CK114

RF1

RF2

RF3

RF4

2-1

and

ADAGI

C132

0.22

TP204

C211 5P(CH)

CK201

R207

680

R222

³⁴ADAGC

SW DIFF

C212

ADIPNF

XL201

33.8688MHz

CK108

8P(CH)

L204

N.C.

C102

C103

REFI

ADIPO

TP212

CK207

CK225

TP208

GND2

WBO

REFO

TP144

AOUT

ASW

C113

BIAS

IC101

75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

R131

150K

R132

VCC2

OPICPW

TP209

TP210

CK224

TP203

CK222

AIN

N.C.

SW 28

CK102

BIN

BSW

MODE

R133¹⁰

OPTCNT

RAA11 47

RAD0 46

RAD1 45

RAWEX 44

RARASX

RAA9 42

RAD3 41

RAD2 40

RACASX 39

DGND 38

RAOEX 37

RAA8 36

RAA7 35

RAA6 34

RAA5 33

RAA4 32

VDD2 31

RAA10 30

RAA0 29

RAA1 28

VCC

I/O1

I/O2

RAS

N.C.

GND

I/O4

I/O3

CAS

ADDATA

DADATA

FEMON

TOTMON

TEMON

HDON

IC201

LR378161

ENDEC/SERVO

/ATRAC

ACRCER

PLCK

DISC

R134

80 DAPON

SGAIN

81 ADPON

150K

CK204

FOK

SENSE CK205

CIN CK206

EFMO

FOK

TEMP

X700KO

TCRS

83 SENSE

84 COUT

13 14 15 16 17 18 19 20 21 22 23

²⁴R139

39K

100

MCCK

DINTX

VDD2

DGND

RSTX

SYSD0

SYSD1

SYSD2

SYSD3

SYSD4

SYSD5

SYSD6

SYSD7

C203

DINT

A10

0.1

C133

R204

TP211

0.22

_XRT1K

SYD0

SYD1

SYD2

SYD3

SYD4

SYD5

SYD6

SYD7

SYWR

SYRD

SYRS

R136

390K

R140

390K

TP200

C204

0.47

VCC

GND

R138

390K

C202

47/6.3

24 SPDRF

SPDRR

SLDRR

EFMMON

AVCC

SYWRX

IC202

TP100

26 RAA3

27 RAA2

99 SYRDX

SYRS

IC101 IR3R58M

RF SIGNAL PROCESSOR

C124

330P

100

IX2824A

16MBIT

D-RAM

R102

22K

R101

22K

LDVAR

LDON

OPICGA

7 8

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

+1.5V

T–

T+

F+

F–

R161

1.2K

C165

0.033

C121

220P

TP206

TP201A

TP201

L202

10µH

VCC2R5V

C207

0.1

R206

100K

L100

10µH

TP122

10111213141516171819 202122

C151

0.01

Q103

CN101

FDG312 P

R205

27K

L171

10µH

TP487

TP487A

+2.7V

TP105A

C172

C171

R151

100K

33/6.3

OPIC

OPTICAL PICKUP

TP352

EFMO

IC40

58X24

EEPR

R920

100K

IC351

R411

100K

^GND6

4.22V

R412

15K

Q901

R422

100K

RN1104

TP409

TP408

OPICGA

BEEP

C357

0.1

VCC

SGAIN

D651

F10J2E

TP411

R414

C354 0.1

25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10

5 4

TP413

R351

3.9

DISC

100

C353

TP415

AUSCLK

10/6.3

N.C.

RACLK

RADAT

TP351

AUDATA

CHGCNT

DSPDAT

DSPSTB

DSPSCK

PBMUTE

EEPD

EPCS

23 RFPCNT

SYRS

SYRD

EEPK

D351

SBE803

CHGCNT

DSPDAT

DSPSTB

DSPSCK

PBOPON

P11

CIN

SPIN

DINT

DISCPR

ARQD

P17

AVSS

LDVAR

(GREEN)

VCC

BUZOUT

SGAIN

DISCP

5 4

LDCNT1

LDCNT2

SPIN

LEDCNT2

CKSTP

XRST

TP40

IC651

LB1938T

MOTOR DRIVE

XRT

C351

47P

(CH)

N.C.

99 EPRT

HREC

MCMON

100 PCNT1

REC

R909

10K

C902

0.01

TP412

_PLAY

EMPH0

PCNT2

DCON

PCNT3

PBLAT

LDON

BATON

DCNT1

LEDCNT3

STOP

LEDCNT1

ELON

CIN

SPIN

EMPH0

PCNT2

DCON

IC401

IX0419AW

SYSTEM

DINT

DISCPR

PCNT3

PBAULT

C901

C130

0.1

R361

C361

0.039

MICROCOMPUTER

BATON

DCNT1

(OG)

STOP

(BLUE)

ELON

49 RKEY

74 FOK

75 DCEXT

LDVAR

TEMP

50 STDCK

C912

0.1

SLCNT3

SLCNT2

SLCNT1

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

PLVDCI

RMDAT

RKCNG

TEMP

HKEY2

HKEY1

IC353

FTD2005

HEAD DRIVER

52 PLVBAT

77 PCLDI

78 SCK0

C911

0.1

R906 R905

270K 100K

SPDRR

EXTCLK

N.C.

H2PG2

H2ROUT 51

H2VM

H2FOUT

H2PG

H1PG1

H1ROUT

H1VM

ASGND 29

BRK–

C2P

C1M

C1P

C602

L602

22µH

SGND

BRK+

R907

180K

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

N.C.

C601

C910 0.047

C909 0.047

C908 0.33

TP402

CSL2

CSL1

IC601

R908

100K

CST

L603

4.7µH

TP400

R406

C603

SPVIN

62 H1FOUT

RIB

18 SPUIN

PWIN1

22K

63 H1PG

IN1F

R903

470

SPCOM

C401

0.1

R407

100K

C604

C907 0.0022

C906 0.0022

C905 0.0022

SW401

EJECT

SPWIN

XL401

FP66

L604

22µH

D432

3.68MHz

1SS372

TP406

R904

10K

10 11 12 13 14 15 16

IC601

BD6640KV

L608

10µH

MOTOR DRIVE

R408

100K

C608

R403

TP901

SW901

DISC PROTECT

5 4

CN601¹¹

TP610

C605

0.1

C600

22/6.3

M902

SLED

IC431

S-80820LNP

COM

MOTOR

D431

1SS361

RESET

M901

SPINDLE

MOTOR

VSS

R462

22K

N.C.

OUT

^–M

M903

LIFT

MOTOR

R464

220K

R431

330K

VDD

C431

0.47

C454

0.0022

MECHANISM FLEXIBLE

• NOTES ON SCHEMATIC DIAGRAM can be found on page 28.

• The numbers 1 to 15 are waveform numbers shown in page 37.

Figure 30 SCHEMATIC DIAGRAM (1/2)

– 30 –

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MD-MT877/MD-MT877C

LCD ASS'Y

CNA01

5 4

SWA13

OPEN/CLOSE

SWA01

SWA02

SWA03

RECORD

PLAY

CA02

0.1

BASS

DADATA

ADDATA

DFCK

RA13

18K

RA01

5.6K

SWA04

EDIT

RA14

18K

RA12

RA02

SWA05

SWA06

DISPLAY

8.2K

BCLK

LRCK

ADPON

DAPON

OPTCNT

DIN

CN451

TP451

RA03

18K

VOLUME–

OPEN

+2.7V

33K

RA04

TP452

TP453

TP454

TP455

TP456

TP457

TP458

TP459

TP460

TP461

TP462

SWA07

SWA08

SWA09

VOLUME+

STOP

56K

RA05

5.6K

DSPSTB

DSPSCK

DSPDAT

HREC

HPLAY

HKEY2

HKEY1

STOP

EMPH1

MODE

QA01

RA06

8.2K

RA07

18K

RA08

56K

2SC4738GR

RA15

SWA10

SWA11

SWA12

FAST REVERSE

FAST FORWARD

ENTER

10K

LEDA03

LEDA02

CL190HBX

TLGU1008

TP463

TP464

RA16

330

LEDA04

TLOU1008

VCC

I/O1

I/O2

RAS

N.C.

GND

I/O4

I/O3

CAS 21

+2.7V

R717

R712 6.8K

R720

6.8K

R718

C500

10/6.3

R710

R501 470

R502 470

C509

C510

Q711

RN1444 A

R719

6.8K

A10

R711 6.8K

C733

C734

0.1

TP706

TP708

TP707

VCC

Vout

GND

C715

0.1

C502

C511

0.1

IC501

C713

0.0022

0.1

12 11 10

1.87V

^N.C.6

AK4551VT

L702

TP701

R713

10K

VCC

GND

AD/DA CONVERTER

L-CH

R-CH

TP702

TP703

TP704

TP705

GND

L703

C711

100P(CH)

C202

47/6.3

C503

3.3/10

5 4

C712

100P

(CH)

R715

100K

R716

100K

L704

VCC

R714

10K

IC202

IC701

J701

OPTICAL/

LINE

13 14 15 16 17 18 19 20 21 22 23

R702

100

IX2824AF

16MBIT

D-RAM

IR3R54N

AUDIO

AMP.

N.C.

C701 R703

C714

Q721

4.47V

100K

3.91V

–2.7V

10/6.3

2SD1979 S

RIPPLE

R725

100

R726

39K

C702

10/6.3

C505

0.001

10 11 12 13 14 15 16

4.43V

FILTER

C726

3.3/10

R701

100

INPGCK

INPGIN

MCPGIN

C725

3.3/10

C506

0.001

R727

8.2K

R723

6.8K

C731

0.22

R724

R728

C764

6.8K L714^TP714

TP713

L202

10µH

VCC2R5V

R-CH

R754

180K C758

L713

L712

L711

R729 4.7K

R730 4.7K

C721 3.3/10

L-CH

R-CH

C754

R441

120

(–)

TP712

C722 3.3/10

8 6

Q443

2SC4738 GR

R761

390K

C723

0.001

TP711

N.C.

R758

100

J702

MIC IN

12 11 10

C724

0.001

C492

R445

10K

IC200

62GR2522

+2.7V

RHPVEE

R757

2.2K

C760

0.1

R732

47K

BIAS

AMP&GAIN SEL.

IC200

LOGIC

AMP&GAIN SEL.

LHPVEE

D496

MA8075M

L491

2.5V REGULATOR

13 14 15 16 17 18 19 20 21 22 23 24

N.C.

C200

L456

C210

0.1

TP726

TP725

TP722

TP724

TP723

TP721

TP727

TP728

C763

R765

L452

D494

15AZ7.5Y

C491

0.1

L-CH

R733

R442

820

47K

L454

L453

L457

IC404

C766

0.22

R492

R766

IC703

C765

0.22

RDATA

^VCC5

R731

C753

Q442

RN4911

47K

IC402

L458

D492

D491

D493

015Z5.1Y

58X2404T

EEPROM

GND

J703

IR3R59N

AUDIO AMP.

15AZ7.5Y

015Z5.1Y

REMOTE

CONTROL/

EARPHONES

TERMINAL

R411

100K

C451

0.022

R412

15K

IC404

N7SZ86P5

GATE IC

409

+2.7V

Q493

^2.73V2SA1832 GR

2.21V

C771

47/6.3

C869

47/6.3

IC771

R496

R495

62GR2322

2.3V REGULATOR

(–)

N.C.

TP411

C773

0.22

C774

C493

0.47

TP413

+4.5V

(GREEN)

C817

0.1

D772

F10J2E

TP405

TP404

XRT

HREC

R813

2.2K

R818

47K

C776

R881 R882

18K 10K

EMPH0

PCNT2

DCON

PCNT3

PBAULT

(–)

IC871

Q825

^0VDTC144 EE

D862

F10J2E

R816

100K

^VCC5

C881

0.027

IC871

5 4

R817

100K

C876

GND

Q807

HN1C01 FU

TC7S86FU

EXCLUSIVE

OR GATE

R871

10K

C863

IC801

BATON

EXTENSION

TERMINAL,+

D861

F10J2E

R815 R814

100K 27K

S-80814ALNP

RESET _DC-IN

D801

DCNT1

(OG)

STOP

(BLUE)

ELON

C775

L851

10µH

TP801

R828 0.85V

2.2K

R803

Q803

C845

0.1

R801

47K

2SA17457 1K

0.86V

C858

D842

HRB0103B

IC851

C851

3.3

RB521S30

Q801

RN4904

D851

Q802

F10J2E

R855

180K

F841

0.4A

FDN339N

C846

0.1

C847

1.3V

R805

IC852

R854

10K

OUT

VSS

R844

C857

DC60V

ERRAMP

5 _EO

L841

4.7

^GND4

_OUT3

C841

VDD

R857

Q804

N.C.

C856

150P

(CH)

33P

(CH)

TP841

Q806

HN1C01FU

560K

EIN

HN1C01 FU

TP842

R806

100K

R831

180K

D841

IC801

R832

5.39V

N.C.

F10J2E

C841

180K

VCC

7 _EIP

R853

270K

STAND

Q261

R802

100K

R834

1.5M

R804

330K

4.65V

HN1C01 FU

C401

0.1

R261

ROSC

CTRL

Q805

BATTERY

C827

R850

22K

C850

0.1

2SA1832 GR

R807

100K

C840

220/4

82P

IC822

TERMINAL,+

EXTENSION

TERMINAL,+

R826 R824

R264

100

D432

(CH)

3.9M

10K

ERRAMP

5 _EO

^GND4

_OUT3

1SS372

Q252

FTD2017

R263

100K

R262

330K

NI-MH

DCON

R810

22K

R809

47K

R825

390K

EIN

G2 G1

S2 S1

C826

82P(CH)

1.3V

R253

33K

TP803

R841

100K

VCC

7 _EIP

R251

C251

0.1

R827

270K

STAND

R823

270K

C860

0.78V

C848

ROSC

CTRL

R252

560K

1.3V

Q251

2SA17457

OUT

VSS

C828

D831

D832

PCNT2

Q253

RN4904

BATTERY

TERMINAL,–

HRB0103B HRB0103B

C252

0.1

VDD

N.C.

C838

0.1

N.C.

TP804

C825

C834

0.1

IC251

IC842

R833

R821

Q254

S-80808LNP

RESET

2.2K

5.38V

C832

0.1

2SA1832 GR

4.81V

62GR2522

2.5V

D821

D1FH3

C837

C836

0.47

R254

R271

470K

R274

56K

Q821

HN1C01FU

5.39V

L821

10µH

C822

REGULATOR

R822

100K

R255

560K

22/6.3

R259

2.2K

C253

0.01

IC821

R275

15K

C272

0.1

C821

3.3

R258

330K

R276

R277

2.2K

OPEN

120K

C274 0.1

STOP

HPLAY

HREC

PLVBAT

BATON

C270

IC821 CPH3413 N-CH MOS FET

IC822 IR3M14N DC/DC CONVERTER

R278

R272

470K

C273

0.1

IC271

CONTROL

TERMINAL

R256

100K

75S54FU

OP AMP.

C841 XC6372C281PR 2.8V UP CONVERTER

IC851 CPH3413 N-CH MOS FET

CHGCNT

STDCK

TP805

R281

R282

47K

IC852 IR3M14N DC/DC CONVERTER

R464

220K

C292

0.01

GND

TERMINAL,–

VCCMICOM

R291

2.2K

C454

0.0022

TP806

C291

R292

100K

Figure 31 SCHEMATIC DIAGRAM (2/2)

– 31 –

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MD-MT877/MD-MT877C

MAIN PWB-A (TOP VIEW)

IC251 ^R251

C251

Q801

IC801

Q804

Q261

R881

Q825

IC202

Q821

FROM

OPTICAL

PICKUP

P35 9-G

Q254

R276

Q803

R807

IC271

Q802

R273

R255

C272

R254

C273

Q806

R278

Q807

R813

C274

R277

R829

Q805

C209

C201

C270

R809

C839IC431

R274

FLEXIBLE PWB

XL201

C830

R431

FP59

CN101

R832

C431

C211

^C860IC852

CK111

R424

D432

CK112

R222

IC822

FP31

C165

FP32

D431

R425

R161

L103

51 50

C401

R402

C130

R871

R423

R856

R855

R422

IC871

C832

R833

C838

IC201

D832

C828

C825

D822

C833

IC401

R408

IC873

C844

100

FROM

MECHANISM

FLEXIBLE PWB

P35 9-A

R841

100

C848

Q443

C204

R416

IC200 ₄

R445

TP411A

CN601

R414

C601

^R4I¹C⁵402

Q442

C604

C605

IC404

R205

C602 ^R413

FLEXIBLE PWB

R200

C210

C500

Q901

IC651

IC771

R904

C511

C503

CN451

C905

C454

C906

C907

R903

C652

C773

C909

C910

L204

C774

_R207C753

D651

IC351

C357

IC601

FROM

LCD/KEY PWB

P34 3-A

C902

C451

IC354

R907

R908

C911

Q711

R731

IC353

C758

C353

R906

C723

C760

R757

C901

IC703

C292

R758

R905

C721

R351

D351

C711

R719

R723

R724

C361

R720

R292

L702

R361

R768

D491

FLEXIBLE PWB

C724

C351

C492

L713

R291

L491

L714

C725

R712

L704

R762

D495

C734

C733

C731

R729

D494

SW401

EJECT

L454

C291

L703

C722

C491

L712

L457

R725

IC701

C713

R716

L453

L711

L458

Q721

R714

L452

C703

R713

R730

R726

R703

J701

OPTICAL/LINE IN

J703

J702

MIC IN

REMOTE CONTROL/

EARPHONES

: 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.

• The numbers 1 to 15 are waveform numbers shown in page 37.

Figure 32 WIRING SIDE OF P.W.BOARD (1/4)

– 32 –

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MD-MT877/MD-MT877C

MAIN PWB-A (BOTTOM VIEW)

EXTENSION

BATTERY

TERMINAL,+

GND

TERMINAL,-

CONTROL

TERMINAL

EXTENSION

TERMINAL,+

BATTERY TERMINAL,+

TP206

C202

TP804

TP805

L202

R282

R281

TP803

TP841

TP200

R151

Q251

Q103

C100

C151

L100

TP801

TP100

C132

TP109

TP118

TP114

TP113

TP107

TP404

TP122

Q252

C109

TP402

TP116

TP108

TP410

C252

TP111

TP120

TP121 TP462

C106

Q253

TP102

TP101

C108

R112

TP413

C110

C112

TP110

TP115

TP139

TP119

C107

R111

TP106

CK224

TP400

CK108

TP203

TP103

TP117

TP144

CK225

TP105

TP415

C131

XL401

IC101

CK222

TP212

TP207

CK102

TP457

TP459

TP204

TP131

F841

TP455

TP417

TP132

CK207

0.4A,

TP451

R495

C493

TP458

C171

DC60V

TP453

R138

R104

R136

TP842

Q493

CK205

CK206

R103

R135

R131

R132

C172

CK204

C608

L171

TP401

TP208

TP456

CK203

TP209

R496

C133

TP130

D493

TP454

TP210

R133

TP405

R134

TP461

CK202

TP464

L841

TP460

R844

C845

C847

D842

IC821

TP610

TP411

TP407

L608

C842

L821

C841

C843

TP661

C846

D772

TP463

TP659

TP657

TP652

TP660

C821

TP409

TP656

D841

D861

D862

C775

D821

C822

TP658

TP653

D771

C863

L602

TP408

TP452

L601

L604

L603

TP201

TP205

C776

IC501

TP655

TP651

TP654

R710

TP702

TP202

C600

C869 C771

TP352

C858

C764

R501

TP707

C506

C505

C715

TP500

TP706

C510

D852

TP708

C823

TP771

TP772

TP727

D851

TP412

TP351

IC851

TP724

TP704

R702

C501

BATTERY TERMINAL,-

TP487

TP713

TP714

TP722

C702

C840

TP725

TP723

SW901

C852

DISC

R701

PROTECT

C859

C701

TP712

TP726

R403

L851

TP901

TP406

TP711

TP721

TP705

TP728

J703

J701

OPTICAL/LINE IN

J702

MIC IN

REMOTE CONTROL/

EARPHONES

Figure 33 WIRING SIDE OF P.W.BOARD (2/4)

– 33 –

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MD-MT877/MD-MT877C

LCD/KEY PWB-B(TOP VIEW)

CN451

TO MAIN PWB

P32 2-F

FLEXIBLE

PWB

LCD/KEY PWB-B(BOTTOM VIEW)

LEDA04

LEDA03

P35 7-H

LCD ASS'Y

LEDA02

RA16

RA12

RA14

CA02

RA05

RA13

RA06

RA07

RA01

RA15

CNA01

QA01

SWA11

FAST FORWARD

RA08

SWA02

PLAY

SWA06

VOLUME–

SWA13

OPEN/

SWA03

BASS

SWA01

RECORD

SWA05

DISPLAY

SWA08

STOP

SWA09

MODE

SWA07

VOLUME+

SWA04

EDIT

SWA10

FAST

REVERSE

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

Figure 34 WIRING SIDE OF P.W.BOARD (3/4)

– 34 –

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MD-MT877/MD-MT877C

M902

SLED MOTOR

TO MAIN PWB

P32 2-D

CN601

MAGNETIC HEAD(3)

M903

LIFT MOTOR

MECHANISM

FLEXIBLE PWB(5)

M901

SPINDLE MOTOR

LCD ASS'Y(217)

OPTICAL PICKUP(4)

CN101

TO MAIN PWB

P32 2-B

CNA01

TO LCD/KEY PWB

P34 4-F

Figure 35 WIRING SIDE OF P.W.BOARD (4/4)

– 35 –

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MD-MT877/MD-MT877C

VOLTAGE

IC501

IC101

IC201

IC401

IC601

IC701

NO.

VOLTAGE

NO.

0 V

2.3 V

0 V

1.24 V

1.22 V

1.23 V

0 V

0.27 V

0.31 V

0.79 V

2.49 V

1.3 V

0 V

2.49 V

1.25 V

1 V

0.26 V

1.25 V

0.26 V

1.48 V

0 V

1.24 V

0 V

2.5 V

0 V

–

0.27 V

0.98 V

2.5 V

2.39 V

0 V

2.4 V

2.5 V

1.27 V

0 V

0.64 V

0 V

1.6 V

1.97 V

0 V

1.4 V

0 V

1.33 V

0 V

1.4 V

0 V

2.49 V

0 V

2.47 V

0 V

2.49 V

0 V

2.47 V

0 V

–

0 V

1.3 V

0 V

–

0 V

0.8 V

0 V

0.8 V

2.46 V

0 V

0.65 V

0 V

100

2.49 V

0.7 V

0.8 V

–

100

–

1.55 V

0 V

2.5 V

0 V

1.55 V

0 V

0.67 V

2.7 V

1.24 V

–

2.1 V

2.68 V

2.57 V

2.5 V

0 V

2.49 V

0 V

1.24 V

0 V

-2.48 V

0 V

2.29 V

0.85 V

0 V

IC842

0 V

NO.

VOLTAGE

1.24 V

0 V

1.23 V

0 V

2.8 V

2.6 V

0 V

2.5 V

0.55 V

1.39 V

1.06 V

2.5 V

0.58 V

0.94 V

1.8 V

0 V

2.02 V

1.6 V

1.07 V

1.85 V

2.48 V

1.65 V

1.59 V

1.07 V

2.39 V

1.88 V

1.13 V

IC851

0 V

IC703

NO.

2.49 V

1.78 V

0 V

1.25 V

0.26 V

1.25 V

1.3 V

1.28 V

0.7 V

2.49 V

1.51 V

0 V

VOLTAGE

NO.

VOLTAGE

1.28 V

0 V

0.55 V

0 V

2.5 V

0 V

2.5 V

0 V

2.38 V

2.49 V

2.5 V

0 V

IC852

0 V

NO.

VOLTAGE

1.25 V

2.5 V

0 V

2.5 V

–

0.8 V

1.25 V

0.7 V

1.25 V

1.4 V

0.7 V

2.49 V

0 V

1.76 V

-1.76 V

0 V

1.76 V

0 V

0.88 V

0 V

2.27 V

0 V

1.76 V

0 V

-1.76 V

0 V

1.28 V

2.8 V

0.47 V

0 V

1.17 V

1.16 V

1.26 V

0 V

2.47 V

2.49 V

0 V

2.44 V

0 V

–

2.34 V

1.47 V

2.49 V

1.67 V

0 V

1.66 V

1.3 V

1.62 V

0 V

1.62 V

1.3 V

2.5 V

7.25 V

1.24 V

6.11 V

1.24 V

3.72 V

1.24 V

0 V

1.3 V

0 V

1.3 V

0 V

2.49 V

0 V

2.47 V

2.5 V

2.49 V

0 V

2.5 V

2.49 V

0 V

1.25 V

0.28 V

1.25 V

0.28 V

IC871

NO.

VOLTAGE

1.24 V

2.49 V

0 V

1.25 V

2.5 V

2.49 V

0 V

IC202

Preform the measurement on

the IC401 pin 37 in the TEST

mode with GND short-circuited.

(LCD is in "TEST" state.)

NO.

VOLTAGE

IC351

IC404

IC801

2.71 V

1.59 V

1.66 V

2.47 V

1.85 V

0 V

1.07 V

1.39 V

0.55 V

2.71 V

0 V

0.58 V

0.94 V

1.07 V

1.8 V

2.01 V

1.61 V

0 V

NO.

VOLTAGE

NO.

VOLTAGE

IC873

Q103

IC402

0 V

4.45 V

0 V

4.45 V

0 V

1.13 V

4.45 V

0 V

1.13 V

4.45 V

0 V

2.5 V

0 V

2.5 V

NO.

0 V

0.8 V

–

VOLTAGE

2.5 V

0.2 V

2.5 V

0 V

2.5 V

0 V

2.5 V

0 V

7.43 V

2.5 V

0 V

IC821

4.49 V

NO.

IC200

VOLTAGE

NO.

VOLTAGE

2.5 V

1.28 V

0 V

0.3 V

IC841

0 V

Q261

0 V

NO.

VOLTAGE

NO.

2.7 V

1.34 V

0 V

VOLTAGE

IC251

1.28 V

2.8 V

1.36 V

1.28 V

0 V

IC651

0 V

0.55 V

1.15 V

NO.

IC822

VOLTAGE

NO.

VOLTAGE

NO.

4.51 V

2.5 V

VOLTAGE

1.3 V

–

2.7 V

0 V

–

0.5 V

0 V

1.25 V

2.8 V

0.7 V

0 V

1.2 V

1.17 V

1.16 V

1.25 V

IC431

IC353

NO.

VOLTAGE

0 V

IC354

NO.

VOLTAGE

22.5 V

2.5 V

0 V

NO.

VOLTAGE

2.7 V

0 V

2.7 V

Q253

IC271

–

0 V

NO.

VOLTAGE

0 V

5.39 V

0 V

2.5 V

5.37 V

1 V

0 V

0.66 V

1 V

2.7 V

Q802

Q801

IC771

NO.

Q821

VOLTAGE

NO.

VOLTAGE

NO.

VOLTAGE

0 V

1.3 V

0.85 V

Q252

0.85 V

0.9 V

0 V

0.77 V

0 V

NO.

0 V

0.5 V

0 V

2.5 V

5.37 V

VOLTAGE

2.7 V

0 V

Q807

Q442

1.3 V

5.38 V

4.94 V

–

Q806

NO.

VOLTAGE

NO.

Q804

VOLTAGE

2.3 V

0 V

2.5 V

–

5.17 V

4.66 V

1.8 V

0 V

NO.

VOLTAGE

0 V

0.56 V

4.6 V

0 V

0.58 V

0.86 V

–

2.46 V

1.3 V

0 V

– 36 –

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MD-MT877/MD-MT877C

WAVEFORMS OF MD CIRCUIT

Stopped

CH1=1mV

DC 10:1

1994 / 12 / 15 22:54:19

Stopped

CH1=2V

DC 10:1

1994 / 12 / 16 00:24:17

Stopped

CH1=1V

DC 10:1

1994 / 12 / 16 01:03:40

CH2=500mV

DC 10:1

CH3=5V

DC 10:1

CH4=2V

DC 10:1

50ms/div

(50ms/div)

CH2=2V

DC 10:1

CH3=2V

DC 10:1

CH4=2V

DC 10:1

50us/div

(50us/div)

CH2=2V

DC 10:1

CH3=500mV

DC 10:1

2ms/div

(2ms/div)

ENV

NORM:200kS / s

NORM:100MS / s

TP208

(FEMON)

IC501(9)

(SDTi)

TP201

(EFMMON)

IC501(12)

(SCLK)

TP120

(F+)

TP210

10 _(TEMON)

IC501(10)

(LRCK)

TP209

(TOTMON)

CK206

(CIN)

IC501(11)

(MCLK)

CK204

(FOK)

=Filter=

=Offset=

=Record Length=

=Trigger=

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

Smoothiing

OFF CH1

CH2

0.00V

Main

10K

Mode

Type

Detay

NORMAL

OFF CH1

CH2

0.00V

Main

Mode

Type

Detay

AUTO

OFF CH1

CH2

0.00V

Main

10K

Mode

Type

Detay

NORMAL

EDGE CH2

FULL

0.000V

0.00V

Zoom

EDGE CH4

0.00V

Zoom

EDGE CH3

0.00V

0.000V

0.00V

Zoom

CH3

CH4

0.0ns

MINIMUM

CH3

CH4

0.0ns

MINIMUM

CH3

CH4

0.0ns

MINIMUM

Hold OFF

Stopped

CH1=2V

DC 10:1

1994 / 12 / 15 23:31:21

Stopped

CH1=2V

DC 10:1

1994 / 12 / 18 09:26:46

Stopped

CH1=2V

DC 10:1

1994 / 12 / 16 01:23:16

CH2=2V

DC 10:1

50ms/div

(50ms/div)

ENV

CH2=2V

DC 10:1

CH3=2V

DC 10:1

CH4=2V

1s/div

500ms/div

(500ms/div)

MORM:200MS/s

DC 10:1

(1s/div)

ENV

TP208

(FEMON)

IC201(25)

(SPDRR)

TP201

(EFMMON)

TP210

(TEMON)

=Tracel=

P-P

1.280V

Bandwidth

Smooth

OFF ON

=Offset=

FULL

=Filter=

Smoothiing

20MHz

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

=Record Length=

=Trigger=

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

OFF CH1

CH2

0.00V

Main

10K

Mode

Type

Detay

NORMAL

EDGE CH1

OFF CH1

CH2

0.00V

Main

10K

Mode

Type

Detay

AUTO

EDGE CH2

0.0ns

MINIMUM

OFF CH1

CH2

0.000V

Main

Mode

Type

Detay

AUTO

EDGE CH1

Zoom

FULL

Zoom

0.00V

Zoom

CH3

CH4

0.0ns

MINIMUM

CH3

CH4

CH3

CH4

0.0ns

MINIMUM

Hold OFF

Stopped

1994 / 12 / 15 08:57:26

Stopped

CH1=2V

DC 10:1

1994 / 12 / 15 08:39:46

Stopped

CH1=2V

DC 10:1

1994 / 12 / 15 09:58:45

CH1=2V

DC 10:1

CH2=2V

DC 10:1

CH3=500mV

DC 10:1

2ms/div

(2ms/div)

ENV

CH2=2V

DC 10:1

CH3=2V

DC 10:1

1s/div

(1s/div)

NORM:1kS/s

CH2=2V

DC 10:1

CH3=2V

DC 10:1

CH4=2V

1s/div

DC 10:1

(1s/div)

ENV

TP208

(FEMON)

TP201

(EFMMON)

TP210

(TEMON)₁

TP210

(TEMON)

TP210

(TEMON)

IC201(25)

(SPDRR)³

TP209

(TOTMON)

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

OFF CH1

CH2

0.00V

Main

10K

Mode

Type

Detay

NORMAL

EDGE CH1

OFF CH1

CH2

0.00V

Main

10K

Mode

Type

Detay

AUTO

EDGE CH1

OFF CH1

CH2

0.00V

Main

10K

Mode

Type

Detay

AUTO

EDGE CH1

0.0ns

MINIMUM

0.00V

0.000V

0.0V

Zoom

0.00V

0.0V

Zoom

0.00V

Zoom

CH3

CH4

0.0ns

MINIMUM

CH3

CH4

0.0ns

MINIMUM

CH3

CH4

Hold OFF

Stopped

CH1=2V

DC 10:1

1994 / 12 / 15 21:54:52

Stopped

1994 / 12 / 15 09:10:03

CH2=2V

DC 10:1

CH3=1V

DC 10:1

CH4=1V

500us/div

(500us/div)

ENV

CH1=500mV

DC 10:1

CH2=2V

DC 10:1

20us/div

(20us/div)

ENV

DC 10:1

TP201

(EFMMON)

CK108

(ADIPO)

TP210

(TEMON)

TP121

(T-)

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

=Filter=

Smoothiing

BW FULL

=Offset=

=Record Length=

=Trigger=

OFF CH1

CH2

0.00V

Main

10K

Mode

Type

Detay

NORMAL

EDGE CH2

OFF CH1

CH2

0.000V

Main

Mode

Type

Detay

NORMAL

EDGE CH1

0.00V

Zoom

0.00V

0.000V

0.0V

Zoom

CH3

CH4

0.0ns

MINIMUM

CH3

CH4

0.0ns

MINIMUM

Hold OFF

For TP208, TP209, and TP210, use the specific LPF, and

observe the waveform.

When watching the EEM monitor (TP201)

Set MSL from 00^Hto 80H with EEPROM control setting. After

completion restore 00^H.

Measurement

10K

1000P

– 37 –

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MD-MT877/MD-MT877C

TROUBLESHOOTING

Use the test mode which indicates trouble causes before repairing the unit. This mode records maximum 2 past error

causes as codes. Refer them for repairing.

Preparations

If dusts and foreign materials are accumulated on the pickup lens, playback sounds can be skipped or the TOC (Table of Contains)

can't be displayed. Clean the object lens and check the playback. When lens are dirty, do the following.

Turn off the power and wipe lens softly with a cleaning paper and a little marketing so as not to damage them.

Do not touch lens with bare hands.

If the unit doesn't work.

If the unit doesn't start after cleaning the pickup objects lens lens, check the unit as follows.

Perform the check stated in item "Power is not turned on

when the button is pressed".

Is the power supply turned on when the remote control

button or main unit

button is pressed ?

Yes

Does the display operate normally ?

Yes

Perform the check stated in item "Abnormal display".

Is playback state set ?

Yes

Perform the check stated in item "Playback state cannot be

set".

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

Is audio output normal ?

Yes

Is recording/playback operation normal ?

Perform the check stated in item "Recording/playback

operation".

Yes

• If "HOLD" appears, press and hold down STOP on

the main unit and cancel the HOLD mode.

• Power is not turned on when the

pressed.

button is

Is power turned on when the remote control

pressed ?

button is

Normal.

Is operation normal when the main body button is pressed ?

Check the remote control, headphone terminals on the

main unit (J703), IC401 and IC404.

Yes

Replace XL401.

Does the pin 63 of IC401 oscillate ?

– 38 –

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MD-MT877/MD-MT877C

• Abnormal display.

Is waveform output from CN451 pins 3 to 5 ?

Is waveform output from IC401 pins 31 to 33 ?

Are the pin 2 (VCC) and pin 12, 13 (GND) normal ?

Yes

Check the periphery of IC401.

Check between IC401 and

CN451.

Check for pattern breakage of flexible PWB, check for

defects of display microcomputer (replace the display unit).

• Audio playback clrcult.

In the normal playback mode, LCD play time display functions, but no audio is heard.

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

12.

Is audio waveform output from IC501 pins 15 and 16 ?

Yes

Is audio waveform output from IC703 pins 8 and 17.

Yes

Check the pins 4 and 21 of IC703.

Check for defective solder joint of audio signal line between

IC703 and J703.

Is audio waveform output from J703 pins 3 and 4.

Yes

Check headphones jack, and periphery of headphone.

•Thespindlemotorfailstorun. Doestheheadmove.

Check the IC201 periphery.

Does the waveform appear on the IC201 pins 24 and 25 after

TEST mode AUTO2 completion and in this state ?

Yes

Replace IC601.

Does waveform appear on the IC601 pin 15 ?

Yes

Does waveform appear on IC601 pins 7, 10 and 12 ?

Yes

L608, IC201, IC601, CN601 and flex, etc. soldering check.

Replace the spindle motor.

– 39 –

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MD-MT877/MD-MT877C

• Recording/playback operation.

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

Change MSL from 00H to 80H by the control setting of EEPROM. After completing the operation, return in to 00H.

Check voltage of pins 57 and 58 of IC201, pins 2, 3, 6, and 7 of

IC651, pins 4 and 5 of CN601. Check whether disc is record-

inhibited.

Does the head move down, failing to start record even

when the continuous record mode is set after address ?

Yes

Does the RF waveform appear at TP201 when recording/

Playback is performed.

Yes

Does level of pins 43 of IC401 and pin 86 of change

depending on record and playback ?

Check periphery of IC401 and IC101.

Check for soldering failure of IC201 .

Yes

Is RF pattern output from IC201 pin 50 ?

Yes

Check whether there is any damage in IC101, periphery of

laser diode.

Check for defects of IC351 in head drive flexible PWB,

head, flexible PWB.

Check whether input waveform is observed on the pins 5

and 6 of IC701.

Check whether the audio signal line between IC701 and J701 is

defective.

Yes

Check whether the voltage of pins 13 to 15 of IC701 varies with

the recording VOLUME +/– button operation. Check whether the

soldering of IC701 is poor.

Is audio waveform observed on the pins 10 and 12 of IC701 ?

Yes

Check whether the pin 7 of IC501 and the pin 81 of IC201 are in

H state.

Is the output waveform output to the pin 8 of IC501 ?

Yes

Check the periphery of IC501 and the waveform of the pins

70 to 73 of IC201.

– 40 –

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MD-MT877/MD-MT877C

FUNCTION TABLE OF IC

IC401 RH-iX0419AWZZ :System Microcomputer (IX0419AW) (1/2)

Port Name

Terminal Name Input/Output

Function

Pin No.

PE5

SYRS

Output

System LSI register selection output.

PE6

_SYRD

_SYWR

SYD0-SYD7

CVCC

System LSI read enable output.

System LSI write enable output.

PE7

4-11

19*

20*

27*

35*

41*

44*

57*

PD0-PD7

CVCC

PC0

Input/Output System LSI parallel data bus.

Input

Output

—

Power supply of internal voltage drop circuit.

PCLAT

VSS

Record audio IC data latch output.

Ground potential.

Vss

PC1

_MCPGI

_INPGI

INPGCK

RCPCNT

TEST1

TEST0

JPNP

Input

Microphone plug insertion detection input.

Line/digital plug insertion detection.

Line/digital plug type detection.

PC2

PC3

PC4

Input/Output Record circuit power control output.

PC5

Input

Test mode setting input 1.

Test mode setting input 0.

PC6

PC7

Input

Kana conversion/Kana input existence/nonexistence discrimination.

P.U detection sensitivity switching output.

RF_LSI power supply ON/OFF control output.

Beep sound pulse output.

PB0

OPICGA

RFRCNT

BUZOUT

SGAIN

DISCP

MCMON

RACLK

RADAT

CHGCNT

DSPDAT

DSPSTB

DSPSCK

PBOPON

P11

Output

Input

PB1

TIOCC3

PB3

RF amp gain pllarity switching output.

RF amp TE polarity switching output.

Internal operation status monitor.

Audio IC data clock output.

PB4

TIOCB4

PB6

PB7

Audio IC serial data output.

PA0

Charge control.

TxD2

PA2

Unit indication data output.

Unit display strobe output.

SCK2

P10

Unit indication data clock output.

Audio IC output stage control output.

Reserve

P11

P12/TCLKA

TCLKB

IRQ0

P15

CIN

Track cross signal/focus drive detection.

Spindle motor FG pulse detection input.

System LSI interruption.

SPIN

Input

_DINT

Input

DISCPR

ARQD

Input

Disc record inhibition switch input.

Disk cap opens and closes detection/it is started and required.

Reserve

IRQ1

P17

Input

P17

Output

—

AVSS

DA1

AVSS

A/D and D/A converter ground potential.

P.U. laser power setting output.

Reserve

LDVAR

PA0

Output

Input

DA0

AN7

RKCNG

TEMP

Remote control button operation detection input.

Ambient temperature detection input.

Unit button operation detection input 2.

Unit button operation detection input 1.

Remote control button operation detection input.

Lithium battery voltage detection input.

DC IN voltage detection input.

AN6

Input

AN5

HKEY2

HKEY1

RKEY

Input

AN4

Input

AN3

Input

AN2

STDCK

PLVDCI

PLVBAT

VREF

Input

AN1

Input

AN0

Input

DC voltage detection input.

Vref

—

A/D and D/A converter reference voltage.

A/D and D/A converter positive power supply.

Operation mode selection input 0.

Operation mode selection input 1.

Sub clock (not used).

AVCC

MD0

MD1

OSC2

AVCC

Input

MD0

Input

MD1

Input

OSC2

—

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

– 41 –

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MD-MT877/MD-MT877C

IC401 RH-iX0419AWZZ :System Microcomputer (IX0419AW) (2/2)

Port Name

OSC1

RES

Terminal Name Input/Output

Function

Pin No.

78*

100

OSC1

—

Sub clock.

_RESET

DCIN

Input

Microcomputer hard reset input.

DC IN edge detection.

NMI

Input

STBY

VCC

_STBY

VCC

Input

Microcomputer standby input (not used).

Positive power supply.

Input

XTAL

Vss

XTAL

—

Crystal connection terminal.

Ground potential.

VSS

—

EXTAL

FWE

MD2

EXTAL

FWE

—

Crystal connection terminal.

Flash write enable.

Input

MD2

Input

Operation mode selection input 2.

Ejection lever operation detection input.

Stepping control 3.

PF7

_EJSW

SLCNT3

SLCNT2

SLCNT1

_RPLAY

SENSE

_FOK

Input

PF6

Output

Input

PF5

Stepping control 2.

PF4

Stepping control 1.

PF3/ADTRG

PF2

Remote control PLAY button operation detection input.

System LSI servo sense input.

Focus OK signal input.

Input

PF1

Input

FP0/IRQ2

TxD0

RxD0

SCK0

P33

_DCEXT

RMDAT

PCLDI

SCK0

Input

DC-IN detection (level).

Output

Input

Remote control indication data/PC link data output.

PC link data input.

Output

Input

Serial I/O clock output (not used).

EL lighting control output L.

_ELON

LEDCTB

_STOP

LEDCTR

DCNT

P34

LED lighting control (Blue).

P35

Unit stop button control detection input.

LED lighting control (Orange).

Mechanism driver enable output.

Battery power supply line ON/OFF.

P.C. laser ON/OFF control output.

Audio PC data clock output.

_DC IN input control output.

DC power supply line ON/OFF.

START Tr ON/OFF.

P36

Output

Input

P77

P76

BATON

LDON

P75

P74

PBLAT

PCNT3

DCON

PCNT2

EMPH0

_PLAY

_REC

P73

P72

P71

P70

Audio output emphasis control 0.

Unit PLAY button operation detection input.

Unit REC button operation detection.

System LSI hard reset output.

Microcomputer standby operation monitor.

LED lighting control (Yellow-green).

EEPROM chip selection output.

PG0/IRQ6

PG1/IRQ7

PG2

Input

_XRST

CKSTP

LEDCTG

_EPCS

EEPD

Output

PG3

PG4

PE0

PE1

Input/Output EEPROM serial data input/output.

PE2

EEPK

Output

EEPROM serial clock output.

PE3

EPRT

EEPROM write protection control output.

System power supply ON/OFF control output.

PE4

PCNT1

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

– 42 –

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MD-MT877/MD-MT877C

IC201 VHiLR378161-1 :Endec/Servo/Atrac (LR378161)

System LSI expansion output port

Port Name

EXPORT4

EXPORT5

EXPORT6

EXPORT7

EXPORT3

EXPORT2

EXPORT0

EXPORT1

Terminal Name Input/Output

Pin No.

56*

Function

Remarks

Undecided justice

LDCNT1

LDCNT2

EMPH1

Output

Not used

Recording head raising-lowering control output 0. See the separate table *3.

Recording head raising-lowering control output 1. See the separate table *3.

Audio emphasis control output 1.

Recording head.

See the separate table *2.

'H': Record electric current

'H': Circuit operation ON

'H': Operation ON

HDON

OPTCNT

DAPON

Optical digital input circuit ON/OFF control.

D/A converter operation control output.

A/D converter operation control output.

ADPON

'H': Operation ON

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

*1: List of TEST port settings *2: List of EMPH port settings

*3: List of LDCNT port settings

EMPH1

EMPH0

LDCNT1

LDCNT2

TEST1

TEST0

Details

fs=32K: 'ON'

fs=48K: 'ON'

OFF

Details

Normal mode

Brake

No adjustment mode

Test mode

Drive UP

Drive DOWN

Output OFF

(Settings prohibited)

fs=44.1K: 'ON'

– 43 –

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MD-MT877/MD-MT877C

— M E M O —

– 44 –

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MD-MT877/MD-MT877C

PARTS GUIDE

PORTABLE MINIDISC RECORDER

MD-MT877(S)

MODEL MD-MT877C(S)

“HOW TO ORDER REPLACEMENT PARTS”

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

For U.S.A. only

Contact your nearest SHARP Parts Distributor to order.

following information.

1. MODEL NUMBER

3. PART NO.

2. REF. No.

4. DESCRIPTION

For location of SHARP Parts Distributor,

Please call Toll-Free;

1-800-BE-SHARP

MARK: SPARE PARTS-DELIVERY SECTION

Explanation of capacitors/resistors parts codes

Capacitors

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

Resistors

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

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

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

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

VRN ....................... Metal-film 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%.)

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%

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

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.

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MD-MT877/MD-MT877C

PRICE

RANK

PRICE

RANK

NO.

DESCRIPTION

NO.

PARTS CODE

DESCRIPTION

PARTS CODE

COILS

INTEGRATED CIRCUITS

L100

L103

L171

L202

L204

L452

L453,454

L456~458

L491

L601,602

L603

L604

L608

L702,703

L704

L711

VPBNN100K0000

RCILC0353AFZZ

RCILC0356AFZZ

VPBNN100K0000

RCILC0353AFZZ

RCILC0352AFZZ

RCILC0353AFZZ

VRS-TV2AB330J

RCILC0372AFZZ

RCILC0358AFZZ

RCILC0372AFZZ

RCILC0356AFZZ

RCILC0353AFZZ

RCILC0352AFZZ

RCILC0353AFZZ

RCILC0005AWZZ

RCILC0358AFZZ

RCILC0005AWZZ

AC 10 µH

IC101

IC200

IC201

IC202

IC251

IC271

IC351

IC353

IC354

IC401

VHIIR3R58M/-1

VHI62GR2522-1

VHILR378161-1

RH-IX2824AFZZ

VHIS80808LN-1

VHI75S54FU+-1

VHI74ACT02T-1

VHIFTD2005/-1

VHICPH5608/-1

RH-IX0419AWZZ

AM RF Signal Processor,IR3R58M

AG 2.5V Regulator,62GR2522

BQ Endec/Servo/Atrac,LR378161

AX 16MBit D-RAM,IX2824AF

AE Reset,S-80808LNP

AG OP AMP,FT75S54FU

AE Head Driver,74ACT02FT

AG Head Driver,FTD2005

AH Head Driver,CPH5608

BE System Microcomputer,

IX0419AW

AB Tip Solid Induction,100mA

AC 10 µH

AB Tip Solid Induction,100mA

AB Tip Impeder,150mA

AB Tip Solid Induction,100mA

AA 33 ohms,1/10W

AC 22 µH,Choke

AC 4.7 µH,Choke

AC 22 µH,Choke

IC402

IC404

IC431

IC501

IC601

IC651

IC701

IC703

IC771

IC801

IC821

IC822

IC841

VHI58X2404T-1

VHIN7SZ86P5-1

VHIS80820LN-1

VHIAK4551VT-1

VHIBD6640KV-1

VHILB1938T+-1

VHIIR3R54N/-1

VHIIR3R59N/-1

VHI62GR2322-1

VHIS80814LN-1

VSCPH3413++-1

VHIIR3M14N/-1

VHI6372C281-1

AF EEPROM,58X2404T

AE Gate IC,N7SZ86P5

AD Reset,S-80820LNP

AC 10 µH

AB Tip Solid Induction,100mA

AB Tip Impeder,150mA

AB Tip Solid Induction,100mA

AF 10 µH,Choke

AU AD/DA Converter,AK4551VT

BA Moter Drive,BD6640KV

AL Motor Drive,LB1938T

AQ Audio Amp.,IR3R54N

AN Audio Amp.,IR3R59N

AF 2.3V Regulator,62GR2322

AE Reset,S-80814ALNP

AE N-ch MOS FET,CPH3413

AK DC/DC Converter,IR3M14N

AH 2.8V UP Converter,

L712~714

L821

L841

AC 4.7 µH,Choke

AF 10 µH,Choke

L851

VIBRATORS

XL201

XL401

RCRSC0028AFZZ

RCRM-0039AWZZ

AH Crystal,33.8688 MHz

AF Ceramic,3.68 MHz

XC6372C281PR

IC842

IC851

IC852

IC871

IC873

VHI62GR2522-1

VSCPH3413++-1

VHIIR3M14N/-1

VHITC7S86FU-1

VHI62GR4522-1

AG 2.5V Regulator,62GR2522

AE N-ch MOS FET,CPH3413

AK DC/DC Converter,IR3M14N

AE Exclusive or Gate,TC7S86FU

AG 4.5V Regulator,62GR4522

CAPACITORS

C100

VCSAPR0JJ106M

AD 10 µF,6.3V,Electrolytic,Tantalum

AC 1 µF,6.3V

C102,103

C106

C107

C108,109

C110

C111

C112

C113

C114

C121,122

C123,124

C130,131

C132,133

C151

C165

C171,172

C200

C201

C202

C203

C204

C205

C207

C209,210

C211

C212

C251,252

C253

C270

C272~274

C291

C292

C351

C353

C354

C357

C361

C401

C431

C451

VCKYCY0JB105K

VCKYCZ1AB104K

VCKYCY0JB105K

VCKYCY1AB224K

VCKYCY0JB105K

VCKYCZ1AB104K

VCKYCY0JB105K

VCCCCZ1HH5R0C

VCKYCZ1HB221K

VCKYCZ1HB331K

VCKYCZ1AB104K

VCKYCY1AB224K

VCKYCZ1CB103K

VCKYCZ1AB333K

RC-SZ0002AWZZ

VCKYCY0JB105K

VCSAPR0JJ106M

VCSATK0JJ476M

VCKYCZ1AB104K

VCKYCY1AB474K

VCKYCZ1AB104K

VCCCCZ1HH5R0C

VCCCCZ1HH8R0D

VCKYCZ1AB104K

VCKYCZ1CB103K

VCKYCY0JB105K

VCKYCZ1AB104K

VCKYCY0JB105K

VCKYCZ1CB103K

VCCCCY1HH470J

VCSAPR0JJ106M

VCKYCZ1AB104K

VCKYTV1HB393K

VCKYCZ1AB104K

VCKYCY1AB474K

VCKYCY1EB223K

VCKYCZ1HB222K

VCKYTV1CB104K

VCKYCY0JB105K

VCKYCY1AB474K

VCSAPR0JJ106M

VCKYCZ1HB222K

VCSAPR1AJ335M

VCKYCZ1HB102K

VCKYCY0JB105K

VCKYCZ1AB104K

RC-SZ0001AWZZ

AC 1 µF,6.3V

AB 0.1 µF,10V

TRANSISTORS

AC 1 µF,6.3V

AB 0.22 µF,10V

Q103

Q251

Q252

Q253

VHIFDG312P/-1

AD P-ch Power MOS,FDG312 P

AB Silicon,PNP,2SA17457

AL N-ch MOS FET,FTD2017

AD Power Select Charge Drive,

RN4904

AC Silicon,PNP,2SA1832 GR

AD Power Transistor,HN1C01 FU

AD Digital Transistor,RN4911

AC Silicon,NPN,2SC4738 GR

AC Silicon,PNP,2SA1832 GR

AC Digital,NPN,RN1444 A

AC Silicon,NPN,2SD1979 S

AD Power Select Charge Drive,

RN4904

AG N-ch MOS FET,FDN339 N

AB Silicon,PNP,2SA17457

AD Power Transistor,HN1C01 FU

AC Silicon,PNP,2SA1832 GR

AD Power Transistor,HN1C01 FU

AB Digital,NPN,DTC144 EE

AB Digital,NPN,RN1104

AC 1 µF,6.3V

VS2SA17457/-1

VSFTD2017++-1

VHIRN4904//-1

AB 0.1 µF,10V

AC 1 µF,6.3V

AB 5 pF (CH),50V

AB 220 pF,50V

Q254

Q261

Q442

Q443

Q493

Q711

Q721

Q801

VS2SA1832GR-1

VHIHN1C01FU-1

VSRN4911+++-1

VS2SC4738GR-1

VS2SA1832GR-1

VSRN1444A//-1

VS2SD1979S+-1

VHIRN4904//-1

AB 330 pF,50V

AB 0.1 µF,10V

AB 0.22 µF,10V

AB 0.01 µF,16V

AB 0.033 µF,10V

AD 33 µF,6.3V,Electrolytic

AC 1 µF,6.3V

AD 10 µF,6.3V,Electrolytic,Tantalum

AD 47 µF,6.3V,Electrolytic,Tantalum

AB 0.1 µF,10V

Q802

Q803

Q804

Q805

Q806,807

Q821

Q825

Q901

QA01

VSFDN339N++-1

VS2SA17457/-1

VHIHN1C01FU-1

VS2SA1832GR-1

VHIHN1C01FU-1

VSDTC144EE/-1

VSRN1104///-1

AC 0.47 µF,10V

AB 0.1 µF,10V

AB 5 pF (CH),50V

AB 8 pF (CH),50V

AB 0.1 µF,10V

VS2SC4738GR-1

AC Silicon,NPN,2SC4738 GR

AB 0.01 µF,16V

AC 1 µF,6.3V

DIODES

AB 0.1 µF,10V

AC 1 µF,6.3V

D351

D431

D432

D491

D492

D493

D494

D495,496

D651

D771,772

D801

D821

D822

D831,832

D841

VHDSBE803//-1

VHD1SS361//-1

VHD1SS372//-1

VHE015Z5R1Y-1

VHE15AZ7R5Y-1

VHE015Z5R1Y-1

VHE15AZ7R5Y-1

VHEMA8075M/-1

VHDF10J2E//-1

VHDRB521S30-1

VHDD1FH3+++-1

VHDHRB0103B-1

VHDF10J2E//-1

VHDHRB0103B-1

VHDF10J2E//-1

VHPTLGU1008-1

VHPCL190HBX-1

VHPTLOU1008-1

AD Silicon,SBE803

AB Silicon,1SS361

AD Silicon,1SS372

AB 0.01 µF,16V

AA 47 pF (CH),50V

AD 10 µF,6.3V,Electrolytic,Tantalum

AB 0.1 µF,10V

AD Zener,5.1V,015Z5.1Y

AC Zener,7.5V,15AZ7.5Y

AD Zener,5.1V,015Z5.1Y

AC Zener,7.5V,15AZ7.5Y

AC Zener,7.5V,MA8075M

AC Silicon,F10J2E

AC Silicon,RB521S30

AE Schottky,D1FH3

AC Silicon,HRB0103B

AC Silicon,F10J2E

AC Silicon,HRB0103B

AC Silicon,F10J2E

AB 0.1 µF,10V

AB 0.039 µF,50V

AB 0.1 µF,10V

AC 0.47 µF,10V

AB 0.022 µF,25V

AB 0.0022 µF,50V

AA 0.1 µF,16V

C454

C491

C492

C493

C500

C501,502

C503

C505,506

C509,510

C511

AC 1 µF,6.3V

AC 0.47 µF,10V

AD 10 µF,6.3V,Electrolytic,Tantalum

AB 0.0022 µF,50V

AD 3.3 µF,10V,Electrolytic,Tantalum

AB 0.001 µF,50V

AC 1 µF,6.3V

D842

D851,852

D861,862

LEDA02

LEDA03

LEDA04

AC Silicon,F10J2E

AE LED,Yellow-green,TLGU1008

AR LED,Blue,CL190HBX

AE LED,Orange,TLOU1008

AB 0.1 µF,10V

AG 22 µF,6.3V,Electrolytic,Tantalum

C600

– 1 –

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MD-MT877/MD-MT877C

PRICE

RANK

PRICE

DESCRIPTION

NO.

PARTS CODE

DESCRIPTION

RANK

NO.

PARTS CODE

C601~604

C605

C608

C652

C701,702

C703

C711,712

C713,714

C715

C721,722

C723,724

C725,726

C731

C733,734

C753,754

C758

VCKYCY0JB105K

VCKYCZ1AB104K

VCKYTV1AB105K

VCKYCZ1AB104K

VCSAPR0JJ106M

VCKYCZ1CB103K

VCCCCZ1HH101J

VCKYCY0JB105K

VCKYCZ1AB104K

VCSAPR1AJ335M

VCKYCZ1HB102K

VCSAPR1AJ335M

VCKYCY1AB224K

VCKYCZ1AB104K

VCKYCY0JB105K

VCKYCZ1AB104K

VCKYCY0JB105K

VCKYCY1AB224K

VCSATE0JJ476M

VCKYCY1AB224K

VCKYCY0JB105K

VCKYCZ1AB104K

VCKYTQ1AB335K

RC-SZ0001AWZZ

AC 1 µF,6.3V

R206

R207

R222

R251

R252

R253

R254

R255

R256

R257

R258

R259

R261

R262

R263

R264

R271,272

R273

R274

R275

R276

R277

R278

R281

R282

R291

R292

R351

R361

R402

R403

R404

R405

R406

R407,408

R411

R412

R413~416

R422

R423

R424,425

R431

R441

R442

R445

R461

R462

R463

R464

R492

R495

R496

VRS-CZ1JB104D

VRS-CZ1JB681J

VRS-CZ1JB105J

VRS-CZ1JB220J

VRS-CZ1JB564J

VRS-CZ1JB333J

VRS-CZ1JB105J

VRS-CZ1JB564J

VRS-CZ1JB104J

VRS-CZ1JB105J

VRS-CZ1JB334J

VRS-CZ1JB222J

VRS-CZ1JB105J

VRS-CZ1JB334J

VRS-CZ1JB104J

VRS-CZ1JB101J

VRS-CZ1JB474D

VRS-CZ1JB473D

VRS-CZ1JB563D

VRS-CZ1JB153D

VRS-CZ1JB124D

VRS-CZ1JB222J

VRS-CZ1JB220J

VRS-CZ1JB102J

VRS-CZ1JB473J

VRS-CZ1JB222J

VRS-CZ1JB104J

VRS-TV2AB3R9J

VRS-TQ2BB150J

VRS-CZ1JB104D

VRS-CZ1JB102J

VRS-CZ1JB104J

VRS-CZ1JB103J

VRS-CZ1JB223J

VRS-CZ1JB104J

VRS-CZ1JB153J

VRS-CZ1JB102J

VRS-CZ1JB104J

VRS-CZ1JB223D

VRS-CZ1JB223J

VRS-CZ1JB334J

VRS-CZ1JB121J

VRS-CZ1JB821J

VRS-CZ1JB103J

VRS-CZ1JB104J

VRS-CZ1JB223J

VRS-CZ1JB104J

VRS-CZ1JB224J

VRS-CZ1JB102J

VRS-CZ1JB220J

VRS-CZ1JB471J

VRS-CZ1JB101J

VRS-CZ1JB104J

VRS-CZ1JB470J

VRS-CZ1JB682J

VRS-CZ1JB103J

VRS-CZ1JB104J

VRS-CZ1JB102J

VRS-CZ1JB682J

VRS-CZ1JB101J

VRS-CZ1JB393J

VRS-CZ1JB822J

VRS-CZ1JB102J

VRS-CZ1JB472J

VRS-CZ1JB473J

VRS-CZ1JB184J

VRS-CZ1JB222J

VRS-CZ1JB101J

VRS-CZ1JB394J

VRS-CZ1JB104J

VRS-CZ1JB150J

VRS-CZ1JB473J

VRS-CZ1JB104J

VRS-CZ1JB102J

VRS-CZ1JB334J

VRS-CZ1JB105J

VRS-CZ1JB104J

VRS-CZ1JB564J

VRS-CZ1JB473J

AA 100 kohm,1/16W

AB 680 ohms,1/16W

AB 1 Mohm,1/16W

AB 22 ohms,1/16W

AA 560 kohms,1/16W

AB 33 kohms,1/16W

AB 1 Mohm,1/16W

AA 560 kohms,1/16W

AA 100 kohm,1/16W

AB 1 Mohm,1/16W

AA 330 kohms,1/16W

AB 2.2 kohms,1/16W

AB 1 Mohm,1/16W

AA 330 kohms,1/16W

AA 100 kohm,1/16W

AB 100 ohm,1/16W

AA 470 kohms,1/16W

AA 47 kohms,1/16W

AA 56 kohms,1/16W

AA 15 kohms,1/16W

AB 120 kohms,1/16W

AB 2.2 kohms,1/16W

AB 22 ohms,1/16W

AB 1 kohm,1/16W

AB 0.1 µF,10V

AD 1 µF,10V

AB 0.1 µF,10V

AD 10 µF,6.3V,Electrolytic,Tantalum

AB 0.01 µF,16V

AB 100 pF (CH),50V

AC 1 µF,6.3V

AB 0.1 µF,10V

AD 3.3 µF,10V,Electrolytic,Tantalum

AB 0.001 µF,50V

AD 3.3 µF,10V,Electrolytic,Tantalum

AB 0.22 µF,10V

AB 0.1 µF,10V

AC 1 µF,6.3V

C760

AB 0.1 µF,10V

C763,764

C765,766

C771

C773

C774~776

C817

C821

C822

C823

C825

C826,827

C828

C830

C832,833

C834

C836

C837

C838

C839

C840

C841

C842

C843

C844

C845,846

C847,848

C850

C851

C852

C856

C857

C858~860

C862,863

C869

C876

C881

C901

C902

AC 1 µF,6.3V

AB 0.22 µF,10V

AD 47 µF,6.3V,Electrolytic,Tantalum

AB 0.22 µF,10V

AC 1 µF,6.3V

AB 0.1 µF,10V

AF 3.3 µF,10V

AG 22 µF,6.3V,Electrolytic,Tantalum

AA 47 kohms,1/16W

AB 2.2 kohms,1/16W

AA 100 kohm,1/16W

AA 3.9 ohms,1/10W

AA 15 ohms,1/8W

VCEAPW0GW227M J AD 220 µF,4.0V,Electrolytic

VCKYCY0JB105K

VCCCCZ1HH820J

VCKYCY0JB105K

VCKYCY1CB104K

VCKYCZ1AB104K

VCKYCY1AB474K

VCKYCY0JB105K

VCKYCY1CB104K

VCKYCY1AB334K

AC 1 µF,6.3V

AB 82 pF (CH),50V

AC 1 µF,6.3V

AB 0.1 µF,16V

AB 0.1 µF,10V

AC 0.47 µF,10V

AC 1 µF,6.3V

AB 0.1 µF,16V

AC 0.33 µF,10V

AA 100 kohm,1/16W

AB 1 kohm,1/16W

AA 100 kohm,1/16W

AA 10 kohm,1/16W

AB 22 kohms,1/16W

AA 100 kohm,1/16W

AA 15 kohms,1/16W

AB 1 kohm,1/16W

AA 100 kohm,1/16W

AB 22 kohms,1/16W

AA 330 kohms,1/16W

AB 120 ohms,1/16W

AA 820 ohms,1/16W

AA 10 kohm,1/16W

AA 100 kohm,1/16W

AB 22 kohms,1/16W

AA 100 kohm,1/16W

AA 220 kohms,1/16W

AB 1 kohm,1/16W

VCEAPW0GW227M J AD 220 µF,4.0V,Electrolytic

VCKYCY0JB105K

RC-SZ0002AWZZ

VCKYCY1AB224K

VCSAPR0JJ106M

VCKYCZ1AB104K

VCKYCY0JB105K

VCKYCZ1AB104K

VCKYTQ1AB335K

RC-SZ0001AWZZ

VCCCCZ1EH151J

VCCCCZ1HH330J

VCKYCY0JB105K

VCSATE0JJ476M

VCKYCY0JB105K

VCKYCZ1AB273K

VCKYCY0JB105K

VCKYCZ1CB103K

VCKYCZ1HB222K

VCKYCY1AB334K

VCKYCZ1AB473K

VCKYCZ1AB104K

VCKYCY1CB104K

AC 1 µF,6.3V

AD 33 µF,6.3V,Electrolytic,Tantalum

AB 0.22 µF,10V

AD 10 µF,6.3V,Electrolytic,Tantalum

AB 0.1 µF,10V

AC 1 µF,6.3V

AB 0.1 µF,10V

AF 3.3 µF,10V

AG 22 µF,6.3V,Electrolytic,Tantalum

AB 150 pF (CH),25V

AB 33 pF (CH),50V

AC 1 µF,6.3V

AD 47 µF,6.3V,Electrolytic,Tantalum

AC 1 µF,6.3V

AB 1 kohm,1/16W

AB 22 ohms,1/16W

AA 470 ohms,1/16W

AB 100 ohm,1/16W

AA 100 kohm,1/16W

AB 47 ohms,1/16W

AB 6.8 kohms,1/16W

AA 10 kohm,1/16W

AA 100 kohm,1/16W

AB 1 kohm,1/16W

AB 6.8 kohms,1/16W

AB 100 ohm,1/16W

AB 39 kohms,1/16W

AA 8.2 kohms,1/16W

AB 1 kohm,1/16W

AB 4.7 kohms,1/16W

AA 47 kohms,1/16W

AB 180 kohms,1/16W

AB 2.2 kohms,1/16W

AB 100 ohm,1/16W

AA 390 kohms,1/16W

AA 100 kohm,1/16W

AB 15 ohms,1/16W

AA 47 kohms,1/16W

AA 100 kohm,1/16W

AB 1 kohm,1/16W

AA 330 kohms,1/16W

AB 1 Mohm,1/16W

AA 100 kohm,1/16W

AA 560 kohms,1/16W

AA 47 kohms,1/16W

AB 0.027 µF,10V

R501,502

R701,702

R703

AC 1 µF,6.3V

AB 0.01 µF,16V

C905~907

C908

C909,910

C911,912

CA01,02

AB 0.0022 µF,50V

AC 0.33 µF,10V

R710

R711,712

R713,714

R715,716

R717,718

R719,720

R723,724

R725

R726

R727

R728

R729,730

R731~733

R754

R757

R758

R761

R762

R765,766

R801

R802

AB 0.047 µF,10V

AB 0.1 µF,10V

AB 0.1 µF,16V

RESISTORS

VRS-CZ1JB000J

AB 0 ohm,Jumper,0.5×1.0mm

AB 22 kohms,1/16W

AB 12 kohms,1/16W

AA 220 kohms,1/16W

AA 150 kohms,1/16W

AA 1 Mohm,1/16W

R101~104

R111

R112

R131

R132

R133

R134

R135

R136

R137

R138

R139

R140

R151

R161

R200

R204

R205

VRS-CZ1JB223J

VRS-CZ1JB123J

VRS-CZ1JB224J

VRS-CZ1JB154D

VRS-CZ1JB105D

VRS-CZ1JB154D

VRS-CZ1JB105D

VRS-CZ1JB563D

VRS-CZ1JB394D

VRS-CZ1JB563D

VRS-CZ1JB394D

VRS-CZ1JB393J

VRS-CZ1JB394J

VRS-CZ1JB104J

VRS-CZ1JB122J

VRS-CZ1JB104D

VRS-CZ1JB102J

VRS-CZ1JB273D

AA 150 kohms,1/16W

AA 1 Mohm,1/16W

AA 56 kohms,1/16W

AA 390 kohms,1/16W

AA 56 kohms,1/16W

AA 390 kohms,1/16W

AB 39 kohms,1/16W

AA 390 kohms,1/16W

AA 100 kohm,1/16W

AB 1.2 kohms,1/16W

AA 100 kohm,1/16W

AB 1 kohm,1/16W

R803

R804

R805

R806,807

R808

AA 27 kohms,1/16W

R809

– 2 –

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MD-MT877/MD-MT877C

PRICE

RANK

PRICE

RANK

NO.

DESCRIPTION

NO.

PARTS CODE

DESCRIPTION

PARTS CODE

R810

VRS-CZ1JB223J

VRS-CZ1JB104J

VRS-CZ1JB222J

VRS-CZ1JB273J

VRS-CZ1JB104J

VRS-CZ1JB473J

VRS-CZ1JB222J

VRS-CZ1JB104J

VRS-CZ1JB274J

VRS-CZ1JB103J

VRS-CZ1JB394D

VRS-CZ1JB395J

VRS-CZ1JB274D

VRS-CZ1JB222J

VRS-CZ1JB104J

VRS-CZ1JB184D

VRS-CZ1JB470J

VRS-CZ1JB155J

VRS-CZ1JB104J

VRS-CZ1JB470J

VRS-CZ1JB223J

VRS-CZ1JB274J

VRS-CZ1JB103J

VRS-CZ1JB184D

VRS-CZ1JB564D

VRS-CZ1JB103J

VRS-CZ1JB183J

VRS-CZ1JB103J

VRS-CZ1JB471J

VRS-CZ1JB103J

VRS-CZ1JB104J

VRS-CZ1JB274J

VRS-CZ1JB184J

VRS-CZ1JB104J

VRS-CZ1JB103J

VRS-CZ1JB104J

VRS-CY1JB562J

VRS-CY1JB822J

VRS-CY1JB183J

VRS-CY1JB563J

VRS-CY1JB562J

VRS-CY1JB822J

VRS-CY1JB183J

VRS-CY1JB563J

VRS-CY1JB333F

VRS-CY1JB183F

VRS-CY1JB103J

VRS-CY1JB331J

AB 22 kohms,1/16W

1 4

RCILH0003AWM1

RCTRH8210AFZZ

QPWBH0010AWZZ J AH Mechanism Flexible PWB

AT Magnetic Head Ass’y

BM Optical Pickup

R812

R813

R814

R815~817

R818

R821

R822

R823

R824

R825

R826

R827

R828

R829

R831,832

R833

R834

R841

R844

R850

R853

R854

R855

R857

R871

R881

R882

R903

R904

R905

R906

R907

R908

R909

R920

RA01

RA02

RA03

RA04

RA05

RA06

RA07

RA08

RA12

RA13,14

RA15

RA16

AA 100 kohm,1/16W

AB 2.2 kohms,1/16W

AA 27 kohms,1/16W

AA 100 kohm,1/16W

AA 47 kohms,1/16W

AB 2.2 kohms,1/16W

AA 100 kohm,1/16W

AB 270 kohms,1/16W

AA 10 kohm,1/16W

AA 390 kohms,1/16W

AA 3.9 Mohms,1/16W

AK 270 kohms,1/16W

AB 2.2 kohms,1/16W

AA 100 kohm,1/16W

AB 180 kohms,1/16W

AB 47 ohms,1/16W

AA 1.5 Mohms,1/16W

AA 100 kohm,1/16W

AB 47 ohms,1/16W

AB 22 kohms,1/16W

AB 270 kohms,1/16W

AA 10 kohm,1/16W

AB 180 kohms,1/16W

AA 560 kohms,1/16W

AA 10 kohm,1/16W

AA 18 kohms,1/16W

AA 10 kohm,1/16W

AA 470 ohms,1/16W

AA 10 kohm,1/16W

AA 100 kohm,1/16W

AB 270 kohms,1/16W

AB 180 kohms,1/16W

AA 100 kohm,1/16W

AA 10 kohm,1/16W

AA 100 kohm,1/16W

AA 5.6 kohms,1/16W

AA 8.2 kohms,1/16W

AA 18 kohms,1/16W

AA 56 kohms,1/16W

AA 5.6 kohms,1/16W

AA 8.2 kohms,1/16W

AA 18 kohms,1/16W

AA 56 kohms,1/16W

AA 33 kohms,1/16W

AA 18 kohms,1/16W

AA 10 kohm,1/16W

AA 330 ohms,1/16W

LHLDX3008AWM2

MLEVF0058AWFW

MSPRT0041AWFJ

LANGK0211AWZZ

LCHSM0107AWM1

MSPRP0044AWFJ

MLEVF0056AWFW

MLEVF0057AWFW

NGERH0096AWZZ

MSPRP0043AWFJ

NBRGC0004AWZZ

LX-BZ0049AWZZ

LX-BZ0050AWZZ

LX-BZ0051AWZZ

LX-BZ0823AFZZ

LX-JZ0027AWZZ

LX-JZ0167AFZZ

AM Cartridge Holder Ass’y

AD Lift Lever

AB Spring,Eject Lever

AC Bracket,Cancel

AL Main Chassis Ass’y

AB Spring,Thrust Plate

AC Lift Connection Lever

AC Lift Working Lever

AC Gear,Drive

AB Spring,Grip

AB Metal

501

502

503

504

505

506

507

508

AB Screw,ø1.4×1.8mm

AB Screw,ø1.4×2.5mm

AB Screw,ø1.4×3.8mm

AA Screw,ø1.4×1.2mm

AA Screw,ø1.7×3.5mm

AB Screw,ø1.4×3.0mm

AA Washer,ø0.8×ø2.4×0.25mm

AA Washer,ø1.5×ø3.5×0.25mm

AW Motor [Spindle]

AT Motor [Sled]

LX-WZ9290AFZZ

LX-WZ9296AFZZ

RMOTV0031AWZZ

RMOTS0002AWZZ

RMOTV0033AWZZ

M901

M902

M903

AW Motor [Lift]

CABINET PARTS

201

202

GCABA3008AWM1

GCABB3010AWM1

BA Top Cabinet Ass’y

AU Bottom Cabinet Ass’y

[MD-MT877 (S)]

Bottom Cabinet Ass’y

[MD-MT877C (S)]

AM Center Cabinet

AE Cover,Battery

202

GCABB3013AWM1

203

204

205

207

208

209

210

212

213

214

215

216

217

218

219

220

221

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

601

602

603

604

GCABA1213AWSA

GFTAB1029AWSA

HDECQ0649AWSA

PSHEZ0095AWZZ

GMADI0007AWSA

GMADI0008AWSA

GMADI0009AWSA

LANGT0072AWFW

JKNBZ0757AWSA

JKNBZ0758AWSA

HDECQ0650AWSA

LHLDZ1291AWZZ

RUNTZ0025AWZZ

JKNBK0081AWSA

LHLDZ3017AWM2

LANGZ0031AWM2

LHLDZ1282AWZZ

GCOVH1021AWZZ

GCOVH1020AWZZ

QTANB9028AWFQ

QTANB9032AWFQ

PSHEZ0085AWZZ

LANGT0080AWFW

AL Decoration Plate

AE Sheet,Button

AC LED Window A

AC LED Window B

AC LED Window C

AB Bracket,Center Cabinet

AQ Button,Operation A

AK Button,Operation B

AF Decoration Plate

AF Holder,LCD

BB LCD Ass’y

AE Knob,Eject

AQ Main Frame Ass’y

AG Battery Terminal,+

AF Holder,Battery

AB Cover,Extension Terminal B

AB Cover,Extension Terminal A

AC Extension Terminal,A

AG Battery Terminal,-

AC Sheet,Insulation

AC Bracket,Lock

OTHER CIRCUITRY PARTS

CN101

CN451

CN601

CNA01

1 F841

J701

J702

J703

M901

M902

QCNCW046XAWZZ J AM Socket,22Pin

QCNCW862PAFZZ

QCNCW862LAFZZ

AG Socket,14Pin

AF Socket,11Pin

QCNCW047GAWZZ J AF Socket,7Pin

QFS-L401AAFNZ

VHLGP1FD202-1

QJAKM0018AWZZ

QJAKM0015AWZZ

RMOTV0031AWZZ

RMOTS0002AWZZ

RMOTV0033AWZZ

QSW-M0010AWZZ

QSW-M0008AWZZ

QSW-K0237AFZZ

QSW-M0009AWZZ

AE Square Tip Type Fuse,0.4A,DC60V

AT Jack,Optical/Line

AG Jack,Mic In

AL Jack,Remote Control/Earphones

AW Motor [Spindle]

AT Motor [Sled]

GCOVH1023AWSA J AB Cover,Charging Stand

PSHEZ0098AWZZ

PSHET0046AWZZ

PSPAZ0031AWZZ

PCUSG0068AWZZ

QTANB9029AWFQ

PSHEZ0105AWZZ

PSPAZ0028AWZZ

PSPAZ0027AWZZ

PSHET0052AWZZ

PSHET0053AWZZ

PSHET0059AWZZ

PCUSG0078AWZZ

PSHET0060AWZZ

LX-BZ0047AWFC

LX-BZ0048AWFN

LX-BZ1008AFFC

LX-BZ0800AFZZ

AB Sheet,Flexible PWB Protection

AD Sheet,PWB

AB Spacer,PWB B

AB Cushion,Terminal

AC Charging Stand Terminal

AA Sheet,Main Frame

AA Spacer,PWB A

AB Spacer,Main Frame

AC Sheet,Button Guide

AA Sheet,Button

M903

AW Motor [Lift]

SW401

SW901

SWA01

SWA02

SWA03

SWA04

SWA05

SWA06

SWA07

SWA08

SWA09

SWA10

SWA11

SWA12

SWA13

AE Switch,Key Type [Eject]

AF Switch,Push Type [Disc Protect]

AC Switch,Key Type [Record]

AC Switch,Key Type [Play]

AC Switch,Key Type [Bass]

AC Switch,Key Type [Edit]

AC Switch,Key Type [Display]

AC Switch,Key Type [Volume -]

AC Switch,Key Type [Volume +]

AC Switch,Key Type [Stop]

AC Switch,Key Type [Mode]

AC Switch,Key Type [Fast Reverse]

AC Switch,Key Type [Fast Forward]

AC Switch,Key Type [Enter]

AE Switch,Push Type [Open/Close]

AA Sheet,Open/Close Button

Cushion,Bracket

Sheet,Button

AB Screw,ø1.4×1.5mm

AC Screw,ø1.4×2.5mm

AB Screw,ø1.4×2mm

AA Screw,ø1.4×2.5mm

PACKING PARTS

(MD-MT877 (S) Except for U.S.A./MD-MT877C (S) for

Canada)

MD MECHANISM PARTS

SPAKA0284AWZZ

SPAKC1155AWZZ

SPAKC1229AWZZ

AE Packing Add.

Packing Case [MD-MT877 (S)]

Packing Case [MD-MT877C (S)]

NGERH0125AWZZ

NSFTD0007AWZZ

AB Wheel,Drive

AL Screw,Drive

– 3 –

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MD-MT877/MD-MT877C

PRICE

RANK

PRICE

DESCRIPTION

NO.

PARTS CODE

DESCRIPTION

RANK

NO.

PARTS CODE

SPAKZ0630AWZZ

SPAKZ0692AWZZ

SSAKA0009AWZZ

Pad,AC Adaptor

AB Sheet,Bubble

AA Polyethylene Bag,Battery Charger

ACCESSORIES

GCASZ0002AWSA

AL Battery Case

QCNWG0029AWZZ J

Connecting Cord,RCA Type

(From Serial No.105×××××)

AK Connecting Cord,RCA Type

(To Serial No.104×××××)

AQ Connecting Cord,Optical Type

AW AC Adaptor

QCNWG0382AFZZ

QCNWG0422AFZZ

RADPA3048AWZZ

RPHOH0176AFSA

AT Earphones

RRMCW0011AWSA J BK Remote Control

(To Serial No.102×××××)

Remote Control

(From Serial No.103×××××)

BL Battery Charger

RRMCW0012AWSA J

RUNTZ0032AWM1

TINSK0115AWZZ

AH Operation Manual

[MD-MT877C (S)]

TINSZ0639AWZZ

TINSZ0640AWZZ

TLABZ0695AWZZ

UBAGC0005AWZZ

UBAGC0006AWSA

UBATM0006AWSA

AE Operation Manual [MD-MT877 (S)]

AC Quick Guide [MD-MT877 (S)]

AA Label,Caution (Battery Case)

AD Battery Carrying Case

AH Carrying Case

AY Battery

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

PWB-A

PWB-B

92LPWB3664MDSS J

92LPWB3532KEYS J

—

Main

LCD/Key

OTHER SERVICE PARTS

UDSKM0001AFZZ

88GMMD-110

AZ Recording Mini Disc

BV High Reflection Disc MMD-110

(TEAC Test MD)

88GMMD-213A

BT Low Reflection Disc MMD-213A

(TEAC Test MD)

BATTEY CHARGER PARTS

22- 1

22- 2

RUNTZ0032AWM1

GCABA1223AW01

————

BL Battery Charger

Front Cabinet

—

Back Cabinet Unit

(Not Replacement Unit)

22- 3

22- 4

22- 5

22- 6

22- 7

22- 8

22- 9

LHLDZ1283AWSA

LHLDZ1285AWSA

GLEGG0002AWZZ

GLEGG0003AWZZ

XEBSN20P05000

TLABM0107AWZZ

TLABZ0855AWZZ

AE Remote Control Stand

AF Stand

AB Cushion A

AB Cushion B

AA Screw,ø2×5mm

Label,Specifications

Label,Caution

– 4 –

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MD-MT877/MD-MT877C

501x2

501

506x3

504x2

M901

502

M902

505

503

507

M903

508

Figure 5 MD MECHANISM EXPLODED VIEW

– 5 –

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MD-MT877/MD-MT877C

MD MECHANISM

205

603x2

201

OPEN

203

218

236

237

603x2

207

235

219

220

204

221

OPEN

210

209

208

223x2

241

212

601

212x3

212

224x2

225x4

601

MAIN PWB

213

226

232

214

242

216

233

227

215

602

234

228

217

229

230

603x2

238

239x3

603

LCD PWB

231

202

240

236

603

601

604x4

603

Figure 6 CABINET EXPLODED VIEW

– 6 –

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MD-MT877/MD-MT877C

22-1

22-7

22-3

22-6

22-7

22-4

22-8

22-5x2

22-2

22-5x2

22-9

Figure 7 BATTERY CHARGER EXPLODED VIEW

– 7 –

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MD-MT877/MD-MT877C

PACKING OF THE SET (MD-MT877(S) FOR U.S.A. ONLY)

Setting position of switches and knobs

Remote Control

HOLD

CANCEL

Operation Manual

Connecting Cord,

Optical Type

Quick Guide

Sheet, Bubble

SPAKZ0692AWZZ

Label, Caution

Battery

Carrying Case

Battery Case

Remote

Control

AC Adaptor

Packing Add.

SPAKA0284AWZZ

Battery

Carrying

Case

Connecting Cord,

RCA Type

AC Adaptor Pad

SPAKZ0630AWZZ

Earphones

Battey Charger

Polyethylene Bag, Battey Charger

SSAKA0009AWZZ

Packing Case

SPAKC1155AWZZ

:Not Replacement Item

– 8 –

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MD-MT877/MD-MT877C

— M E M O —

– 9 –

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MD-MT877/MD-MT877C

— M E M O —

– 10 –

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MD-MT877/MD-MT877C

2001 BY SHARP CORPORATION

No part of this publication may be reproduced,

stored in a retrieval system, or transmitted in

any form or by any means, electronic, mechanical,

photocopying, recording, or otherwise, without

prior written permission of the publisher.

SHARP CORPORATION

Communication Systems Group

Quality & Reliability Control Center

Higashihiroshima, Hiroshima 739-0192, Japan

Printed in Japan

A0103-1267DS•HA•M

SC • LAG • SL

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