Sharp MD-M3, MD-M1, CP-M3, CP-M1 Service Manual

Illustration: MD-M3

MD-M3/M1

SERVICE MANUAL

No.S6940MDM3M1//

MD-M3

MD-M3 MD micro System consisting of
MD-M3(main unit) and CP-M3(speaker

system).

MD-M1

MD-M1 MD micro System consisting of
MD-M1(main unit) and CP-M1(speaker

system).

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

Illustration: MD-M1

CONTENTS

IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)........................................................................................................2

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

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

OPERATION MANUAL .......................................................................................................................................................7

QUICK GUIDE ....................................................................................................................................................................9

DISASSEMBLY................................................................................................................................................................ 11

REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 13

TEST MODE .................................................................................................................................................................... 15

ADJUSTMENT ................................................................................................................................................................. 17

EEPROM WRITING PROCEDURE ..................................................................................................................................23

EXPLANATION OF MECHANISM ERROR ......................................................................................................................24

EXPLANATION OF ERROR DISPLAY.............................................................................................................................25

NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 26

TYPE OF TRANSISTOR AND LED ................................................................................................................................. 26

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

SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 32

WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 54

WAVEFORMS OF MD CIRCUIT ..................................................................................................................................... 55

TROUBLE SHOOTING (CD SECTION) .......................................................................................................................... 57

TROUBLE SHOOTING (MD SECTION) ...........................................................................................................................61

TROUBLE SHOOTING (POWER SUPPLY SECTION)................................................................................................... 65

FUNCTION TABLE OF IC................................................................................................................................................ 66

REPLACEMENT PARTS LIST/EXPLODED VIEW/PACKING OF THE SET (FOR U.S.A.)

Page

SHARP CORPORATION

– 1 –

This document has been published to be used
for after sales service only.
The contents are subject to change without notice.

MD-M3/M1

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

IMPORTANT SERVICE NOTES (For U.S.A.Only)

BEFORE RETURNING THE AUDIO PRODUCT

(Fire & Shock Hazard)
Before returning the audio product to the user, perform the
following safety checks.

1. Inspect all lead dress to make certain that leads are not
pinched or that hardware is not lodged between the chassis
and other metal parts in the audio product.

2. Inspect all protective devices such as insulating materials,
cabinet, terminal board, adjustment and compartment
covers or shields, mechanical insulators etc.

3. To be sure that no shock hazard exists, check for leakage
current in the following manner.

* Plug the AC line cord directly into a 120 volt AC outlet.
* Using two clip leads, connect a 1.5k ohm, 10 watt resistor

paralleled by a 0.15µF capacitor in series with all exposed
metal cabinet parts and a known earth ground, such as
conduit or electrical ground connected to earth ground.

* Use a VTVM or VOM with 1000 ohm per volt, or higher,

sensitivity to measure the AC voltage drop across the
resistor (See diagram).

* Connect the resistor connection to all exposed metal parts

having a return path to the chassis (antenna, metal cabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.

VTVM

AC SCALE

1.5k ohms
10W

0.15 µ F

TO EXPOSED
METAL PARTS

All check must be repeated with the AC line cord plug connection
reversed.
Any reading of 0.3 volt RMS (this corresponds to 0.2 milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.

TEST PROBE

CONNECT TO
KNOWN EARTH
GROUND

– 2 –

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

SPECIFICATIONS

MD-M3/M1

● General
Power source: AC 120 V, 60 Hz

Power

consumption: 60 W

Dimensions: Width; 6-5/16" (160 mm)

Height; 9-1/2" (240 mm)
Depth; 11-13/16" (300 mm)
Weight: 9.7 lbs. (4.4 kg)

● Amplifier section
Output power: FTC 16 watts per channel

minimum RMS into 4 ohms
from 80 Hz to 20 kHz with no
more than 10% total
harmonic distortion

Output terminals: Speaker; 4 ohms

Headphones; 16 - 50 ohms
(recommended 32 ohms)

Input terminals: AUX; 500 mV/47 k ohms

MD-M3/M1

● Compact disc player section
Type: Top open type compact disc

player

Signal readout: Non-contact, 3-beam semi-

conductor laser pickup

Rotation speed: 200 - 500 rpm CLV, Approx.
Error correction: CIRC (Cross Interleave Reed-

Solomon Code)

Quantization: 16-bit linear
Frequency

response: 20 - 20,000 Hz
D/A converter: 1-bit D/A converter
Signal/noise ratio: 95 dB (1 kHz)
Dynamic range: 90 dB (1 kHz)
Wow and flutter: Unmeasurable

(less than 0.001% W . peak)

● MiniDisc recorder section
Type: MiniDisc recorder

Signal readout: Non-contact, 3-beam semi-

conductor laser pickup

Rotation speed: 400 - 900 rpm CLV, Approx.
Error correction: ACIRC (Advanced Cross In-

terleave Reed-Solomon
Code)

Quantization: 20-bit linear (A/D converter)
Coding: ATRAC (Adaptive TRansform

Acoustic Coding)

Sampling

frequency: 44.1 kHz

Recording

method: Magnetic modulation

overwrite method

Frequency

response: 20 - 20,000 Hz
D/A converter: 1-bit D/A converter
Wow and flutter: Unmeasurable

(less than 0.001% W . peak)

Signal/noise ratio: 95 dB (1 kHz)
Dynamic range: 90 dB (1 kHz)
Audio channel: Stereo; 2 channels

Monaural; 1 channel
(playback only)
(long-time recording mode)

● T uner section
Frequency range: FM; 87.5 - 108.0 MHz

AM; 530 - 1,720 kHz

Sensitivity: FM; 2.5 µV (75 ohms unbal-

anced)
AM; 650 µV/m

CP-M3/M1

Speaker section

●

ype (MD-M3): 2-way speaker system

T

4-3/4" (12cm) woofer ,
3/4" (2cm) tweeter

ype (MD-M1): Full range speaker system

T

4" (10cm) full-range speaker

Maximum input

power: 40 W

Rated input

power: 20 W

Impedance: 4 ohms
Dimensions:

(MD-M3)

Width; 6-5/16" (160 mm)
Height; 9-1/2" (240 mm)
Depth; 7-7/8" (198 mm)
Weight; 6.8 lbs. (3.1 kg)/each

Dimensions:
(MD-M1)

Width; 6-5/16" (160 mm)
Height; 9-1/2" (240 mm)
Depth; 7-1/4" (183 mm)
Weight; 4.0 lbs. (1.8 kg)/each

Specifications for this model are subject to change without
prior notice.

– 3 –

MD-M3/M1

NAMES OF PARTS

■ Front panel

1. Power Button

2. (MD) Display Button

3. Timer Stand-by Indicator

4. (MD) Record Button

5. (CD/MD/TUNER) Memory Button

6. (CD/MD) Stop Button
(TUNER) Tuning Down Button

7. (CD/MD) Play/Pause Button
(TUNER) Tuning Up Button

8. Function Selector Buttons

9. CD Eject Button

10. MD Compartment

11. MD Eject Button

12. (CD/MD) Track Up/Cue Button
(TUNER) Preset Up Button

13. (CD/MD) Track Down/Review Button
(TUNER) Preset Down Button

14.

14.

15.

16. Surround Button

17. Preset Equalizer Button

18. Extra Bass Button

19. Headphone Jack

20. Volume Control

▲

CD MD Normal Speed Edit Button (MD-M3 ONL Y

▲

CD MD Edit Button (MD-M1 ONLY)

▲

CD MD High Speed Edit Button (MD-M3 ONLY)

9

1
2

3
4
5
6

7
8

)

10
11
12

13
14
15

16
17

18
19

20

■ Rear panel

1. Speaker Terminals

2. FM 75 Ohms Antenna Terminal

3. Antenna Ground Terminal

4. AM Loop Antenna Terminal

5. Auxiliary Input (Analog) Level Control

6. Demo Switch

7. Auxiliary Input (Analog) Jacks

8. AC Power Input Jack

14

MD-M1

2
3

4
5

1

6
7

8

– 4 –

MD-M3/M1

L
R

OVER

REC
PLAY

RECkHz

MHzSLEEP

AM PM

ST

DISC TOC

SURROUND

X-BASS

TRACK
MEMORY
RANDOM
TOTAL
REMAIN

■ Display window

1. Level Meters

2. Character Information Display

3. Surround Indicator

4. Extra Bass Indicator

5. FM Stereo Indicator

6. FM Stereo Mode Indicator

7. (CD/MD) Disc Indicator

8. (CD/MD) Track Indicator

9. (CD/MD/TUNER) Memory Indicator

10. (CD/MD) Repeat Indicator

11. (CD/MD) Play/Pause Indicator

12. (MD) TOC Indicator

13. (CD/MD) Random Play Indicator

14. (CD/MD) Total Indicator

15. (CD/MD) Remaining Time Indicator

16. Timer Record /Timer Play Indicator

17. CD Indicator

18. MD Indicator

19. (MD) Record Indicator

20. AM/PM Indicator

21. Sleep Indicator

1

SURROUND

L

X-BASS

R

ST

DISC TOC
TRACK
MEMORY
RANDOM
TOTAL
REMAIN

3

2

4
5
6
7
8
9

REC

OVER

PLAY

AM PM

RECkHz

MHzSLEEP

10
11
12
13
14
15

20 21

16
17

18
19

CP-M3

■ Speaker section

1. Tweeter

2. Woofer

3. Bass Reflex Duct

4. Speaker Terminals

CP-M1

■ Speaker section

1. Full-Range Speaker

2. Bass Reflex Duct

3. Speaker Wire

1

2

3
4

1

2

3

– 5 –

MD-M3/M1

■ Remote control

1. Remote Control Transmitter LED

2. Surround Button

3. Clock Button

4. Timer Button

5. Name/TOC Edit Button

6. Sleep Button

7. (TUNER) Preset Up/Down Buttons

8. Extra Bass Button

9. Preset Equalizer Button

10. (MD) Display Button

11. Enter Button

12. Clear Button

13. Character Select Buttons

14. (CD/MD/TUNER) Memory Button

1

2
3

7
8

4

9

5
6

10
11

15. (CD/MD) Time Button

16. (CD/MD) Play Mode Button

17. (CD/MD) Track Down/Review Button

18. (CD/MD) Track Up/Cue Button

19. (MD) Record Button

20. (CD/MD) Stop Button

21. (CD/MD) Play/Pause Button

22. Power Button

23. Dimmer Button

24. Function Selector Buttons

25. Volume Buttons

19

22
23

1312 14

15 16 17

18

20
21

24
25

– 6 –

OPERATION MANUAL

1

SETTING THE CLOCK

1

Press the POWER button to turn the power on.

2

Press the CLOCK button.

DISC TOC

TRACK

MEMORY

RANDOM

TOTAL

REMAIN

RECkHz

MHzSLEEP

3

Within 5 seconds, press the ENTER button.

DISC TOC

TRACK

MEMORY

RANDOM

TOTAL

REMAIN

RECkHz

MHzSLEEP

4

Press the

or button to select the time

display mode.

DISC TOC

TRACK

MEMORY

RANDOM

TOTAL

REMAIN

"0:00" The 24-hour display will appear.

(0:00 - 23:59)

"12:00 AM"

The 12-hour display will appear.

(AM or PM 12:00 - 11:59)

"0:00 AM"

The 12-hour display will appear.

(AM or PM 0:00 - 11:59)

● Note that this can only be set when the unit is

first installed or it has been reset.

5

Press the ENTER button.

DISC TOC

TRACK

MEMORY

RANDOM

TOTAL

REMAIN

RECkHz

MHzSLEEP

6

Adjust the hour by pressing the

or

button.

DISC TOC

TRACK

MEMORY

RANDOM

TOTAL

REMAIN

RECkHz

MHzSLEEP

● When the button is pressed once, the time will

increase by 1 hour. When the

button is pressed

once, the time will decrease by 1 hour.

● When the 12-hour display selected, “

AM

” will

change to “

PM

” automatically.

7

Press the ENTER button.

DISC TOC

TRACK

MEMORY

RANDOM

TOTAL

REMAIN

RECkHz

MHzSLEEP

8

Adjust the minutes by pressing the

or

button.

DISC TOC

TRACK

MEMORY

RANDOM

TOTAL

REMAIN

RECkHz

MHzSLEEP

● When the

button is pressed once , the time

will increase by 1 minute. When the

button is

pressed once, the time will decrease by 1 minute.

● The hour setting will not advance even if min-

utes advance from "59" to "00".

9

Press the ENTER button.

DISC TOC

TRACK

MEMORY

RANDOM

TOTAL

REMAIN

RECkHz

MHzSLEEP

● The clock starts operating from "0" seconds.

(Seconds are not displayed.)

To see the time display:

Press the CLOCK button.

● The time display will appear for about 5 seconds

even if stand-by mode.

Note:

● The clock display will flash on and off at the push

of the CLOCK button when the AC power supply

is restored after a power failure occurs or after

the AC power cord is disconnected.

If this happens, follow the procedure below to

change the clock time.

To change the clock time:

Press the CLOCK button.

2

Within 5 seconds, press the ENTER button.

3

Perform steps 6 - 9 above.

To change the time display mode:

1

Reset the microcomputer.

2

Perform steps 1 - 9 above.

In this example, the clock is set for the

24-hour (0:00) system.

4,6,8

2

1

3,5,7,9

RESETTING THE MICROCOMPUTER

MAINTENANCE

Internal care

Do not touch the Laser pickup lens. If fingerprints

or dust accumulate on the pickup, clean it gently

with a dry cotton swab.

External care

Periodically wipe the cabinet with a soft cloth and

a diluted soap solution, then wipe with a dry cloth.

Do not use chemically treated cleaning cloths or

other chemicals.

Care of compact discs

If this product is subjected to strong external inter-

ference (mechanical shock, excessive static elec-

tricity, abnormal supply voltage due to lightning, etc.)

or if it is operated incorrectly, it may malfunction or

the display may not function correctly. If such a prob-

lem occurs, do the following:

1

Press the POWER button to enter the stand-by

mode.2Press the POWER button while holding down

the EQUALIZER button and the PLAY

button.

“ALL CLEAR” will appear.

Caution:

The operation explained above will erase all data

stored in memory including clock and timer

settings, and tuner, MD and CD presets.

1,2

2

NO

YES

Correct

Compact discs are fairly resistant to damage, how-

ever mistracking can occur due to an accumulation

of dirt on the disc surface.

Follow the guidelines below for maximum enjoy-

ment from your CD collection and player.

Do not write on either side of the disc, particu-

larly the non-label side.

Signals are read from the non-label side. Do not

mark this surface.

Keep your discs away from direct sunlight, heat,

and excessive moisture.

Always hold the CDs by the edges. Fingerprints,

dirt, or water on the CDs can cause noise or

mistracking. If a CD is dirty or does not play prop-

erly, clean it with a soft, dry cloth, wiping straight

out from the center, along the radius.

Illustration:MD-M3

MD-M3/M1

– 7 –

MD-M3/M1

■ If a problem occurs

If this unit functions abnormally during operation, first check the following items. If the unit continues to function

abnormally , or if an abnormality appears other than listed below, set this unit to the stand-by mode and discon-

nect the AC power plug, then consult your SHARP dealer or service personnel.

TROUBLESHOOTING

General

Possible cause

Did a power failure occur?

Is the volume level is set to “0”?

Are the headphones connected?

Are the speaker wires disconnected?

When a radio or TV which uses an

indoor antenna is placed near the

unit, the picture on the TV screen

may be distorted or the radio may

not function properly .

Remedy

Try setting it again.

Set this unit to the stand-by

mode and then turn it back on.

Then, retry the operation.

Increase the volume level.

Disconnect the headphones.

Connect the wires securely.

It is recommended that you use

an external antenna.

Symptom

The clock is wrong.

When a button is pressed, the unit

does not respond.

No sound is heard.

Radios make unusual noise or the

picture on the TV screen is dis-

torted.

Symptom

A recording cannot be made.

Even though a disc has been

loaded, “MD NO DISC” or “READ

ERR” is displayed.

Playback sounds are skipped.

Possible cause

Is the MiniDisc protected against

accidental erasure?

Did you try to make recording on a

play-back only MiniDisc?

Can you see the “DISC FULL” or

“TOC FULL

” message in the dis-

play?

(

:number or symbol)

The source has been encoded with

the SCMS signal (Serial Copy Man-

agement System).

The disc is very dirty.

Is the unit located near excessive

vibrations?

Has condensation formed inside the

unit?

Remedy

Slide the accidental erase pre-

vention tab back to its original

position.

Replace it with a recordable

disc.

Put in another recordable disc

with recording space on it.

Use another source.

Clean the disc.

Place the unit on a firm, level

surface free from vibration.

Remove the disc and leave the

power turned on. The unit

should function properly in

about 1 hour.

MD recording and playback

CD Playback

Possible cause

The disc is loaded up-side down.

The disc is very dirty.

The disc which does not satisfy the

standards.

Is the unit located near excessive

vibrations?

Has condensation formed inside the

unit?

Remedy

Load the disc with the correct

side up.

Clean the disc.

Load the correct disc.

Place the unit on a firm, level

surface free from vibration.

Remove the disc and leave the

power turned on. The unit

should function properly in

about 1 hour.

Symptom

Even though a disc has been

loaded, “CD NO DISC” or “ERR”

is displayed.

Playback stops in the middle of a

track, or playback is not performed

properly.

Playback sounds are skipped.

Symptom

Radios make unusual noise con-

secutively .

Possible cause

The unit is placed near the TV or

computer .

The antenna direction is not placed

properly.

Remedy

When the unit receives a radio

broadcast near a TV set, a com-

puter or a word-processor ,it may

pick up noise. If this hap-

pens,try to move the unit from

the place where the noise is

picked up.

Correct the antenna direction.

Radio reception

The preset channel cannot be re-

called.

Did you erase the programmed sta-

tion?

Preset the channel again.

Redo programming.

(Continued)

Symptom

The remote control does not func-

tion or does not operate properly .

The power cannot be turned on

from the remote control.

Possible cause

The batteries (polarity) are not in-

serted properly .

The batteries inside the remote con-

trol are dead.

The remote control is operated from

an incorrect distance or angle.

Is the AC power cord plugged in?

Remedy

Insert properly.

Replace the batteries.

Operate it within a range of

8" (0.2m) to 20' (6m) and within

an angle of 15 ° to either side of

center.

Connect the AC power cord.

Remote control

When an error message is displayed, proceed as follows:

Error messages

BLANK MD

CAN’T EDIT

CAN’T REC

CD NO DISC

DISC FULL

FOCUS ERR

MD ERR

MD NO DISC

MECHA ERR*

(*:Number or

symbol)

NAME FULL

NOT AUDIO

PLAY MD

PROTECTED

READ ERR

TEMP OVER

TOC ERR*

(*:Number or

symbol)

TOC FULL*

(*:Number or

symbol)

TOC W ERR

U TOC ERR*

(*:Number or

symbol)

U TOC ERR W

? DISC

00:00

Remedy

● Replace it with another disc.

● Change the stop position of the track and

then try editing it.

● Re-record or replace the MiniDisc.

● Replace it with another disc.

● Load a CD.

● Reload the CD.

● Replace the disc with another recordable

disc.

● Reload the MiniDisc.

● Contact the shop where you purchased the

unit.

● Load a MiniDisc.

● Reload the MiniDisc.

● Set this unit to the stand-by mode and press

the MD EJECT button.

● Shorten the disc or track name.

● Select another track.

● Replace the disc.

● Replace it with another recordable disc.

● Move the write protection tab back to its

original position.

● Reload the disc or replace it.

● Set this unit to the stand-by mode and wait

for a while.

● Replace it with another disc.

● Replace it with another recordable disc.

● Contact the shop where you purchased the

unit.

● Replace it with another disc.

● Erase the disc and try recording again.

● Set this unit to the stand-by mode and try to

write the TOC again. (Remove any source

of shock or vibration while writing.)

● Replace it with another disc.

● Replace the disc with another recordable

disc.

Meaning

● Nothing is recorded.

● A track cannot be edited.

● Recording cannot be performed correctly

due to vibration or shock in the unit.

● Timer recording is impossible or there is no

available space on the MD.

● A CD has not been loaded.

● The disc data cannot be read.

● The disc is out of recording space.

● A disc has not been loaded.

● The disc data cannot be read.

● Trouble is found.

● A MiniDisc has not been loaded.

● The disc data cannot be read.

● There is a mechanical problem and the disc

is not working properly .

● The number of characters for the disc name

or track name exceeds 40.

● The data recorded on this disc is not audio

data.

● You tried to record on a playback-only disc.

● The disc is write protected.

● The disc is damaged.

● A T OC is not written on the MD or there is

something wrong with data.

● The temperature is too high.

● The disc is damaged.

● TOC information cannot be read.

● MD not specified.

● There is no space left for recording charac-

ter information (track names, disc names,

etc.).

● Recording is impossible.

● TOC information recorded on the MD does

not match the MD specifications or it can-

not be read.

● The TOC information could not be created

properly due to a mechanical shock or to

scratches on the disc.

● The data contains an error .

● Music is not being recorded.

ERROR MESSAGES

– 8 –

1

Check the supplied accessories /

MD MICRO SYSTEM
Quick Guide/Guía rápida

Compruebe los accesorios suministrados

MD-M3

3

Listening to a CD /

1

POWER

Audición de discos CD

3

CD EJECT

4

MD-M3/M1

● Label side up

●

Con el lado de la

etiqueta hacia arriba

● Remote control x 1

Controlador remoto x 1

●

● FM antenna x 1

Antena de FM x 1

●

2

Preparation for use /

■Speaker connection

■

Conexión de los altavoces

Right speaker

Altavoz derecho

Black

Negro

LEFT

RIGHT

RATESD SPEAKER

Red

IMPEDANCE :
4 OHMS MIN.

Rojo

■Turning the power on and off

Conexión y desconexión de la alimentación

■

POWER

● AC power cord x 1

Cable de alimentación de CA x 1

●

● Speaker wire x 2

●

Preparación para su uso

Left speaker

Altavoz izquierdo

Red

Rojo

Black

Negro

POWER

Cable del altavoz x 2

■Antenna connection

■

Conexión de las antenas

■Remote control

Controlador remoto

■

● 2 “AA” size batteries

2 pilas del tamaño “AA”

●

● Batteries are not included.

Las pilas no están incluidas.

●

AM loop antenna x 1

●

Antena de cuadro de AM x 1

●

● Speaker cushion x 8

Almohadilla del altavos x 8

●

● AM Loop Antenna

Antena de cuadro

●

Antena de FM

FM

75 OHMS

GND

AM

● AC 120 V, 60 Hz

●

120 V de CA, 60 Hz

8" - 20'
(0.2 m - 6 m)

0,2 m - 6 m

de AM

Remote Sensor

Sensor remoto

15

● FM Antenna

●

2

CD

To stop playback

Para detener la reproducción

4

Listening to an MD /

POWER

1

MD

2

Audición de discos MD

5

PUSH CLOSE

6

To remove a MiniDisc

Para extraer un minidisco

4

3

● Label side facing up

Con el lado de la etiqueta

●

orientado hacia arriba

15

To stop playback

Para detener la reproducción

5

Listening to the radio /

POWER

1

2

Select “FM ST”,“FM”or“AM”

Seleccione “FM ST”,
“FM”o“AM”

TUNER

6

Sound control /

■ Volume

Volumen

■

■Extra bass (X-BASS)

Graves extra (X-BASS)

■

X-BASS

Audición de la radio

Control del sonido

X-BASS

Tune into the desired station.

3

Sintonizar la emisora deseada.

■Pre-programmed equalizer

■

Ecualizador preprogramado

FLAT

■Surround

Sonido difuso

■

SURROUND

TUNING

HEAVY

VOCALSOFT

SURROUND

7

Recording from a CD onto a MiniDisc (One-Touch Editing) /

Grabación de un disco CD a un minidisco (edición de un accionamiento)

POWER

1

2

8

CD

To stop recording

Para detener la grabación

Recording from the built-in radio onto MiniDisc /

Grabación desde la radio incorporada a un minidisco

1

Tune into the desired station.

Sintonice la emisora deseada.

TUNER

2

Load a recordable Minidisc.

Inserte un minidisco grabable.

Load a compact disc and a

3

recordable MiniDisc.

Inserte un disco compacto y un
minidisco grabable.

4

HIGH NORMAL

CD MD EDIT

4

Check the recordable time.

Compruebe el tiempo que puede grabarse.

DISPLAY

5

To stop recording

Para detener la grabación

– 9 –

3

REC

MD-M3/M1

1

Check the supplied accessories /

MD MICRO SYSTEM
Quick Guide/Guía rápida

Compruebe los accesorios suministrados

MD-M1

3

Listening to a CD /

1

POWER

Audición de discos CD

3

CD EJECT

4

● Label side up

●

Con el lado de la

etiqueta hacia arriba

Remote control x 1

●

Controlador remoto x 1

●

AM loop antenna x 1

●

Antena de cuadro de AM x 1

●

2

Preparation for use /

■ Speaker connection

■

Conexión de los altavoces

Right speaker

Altavoz derecho

Black

Negro

LEFT

RIGHT

RATESD SPEAKER

Red

IMPEDANCE :

4 OHMS MIN.

Rojo

■Turning the power on and off

Conexión y desconexión de la alimentación

■

POWER

Preparación para su uso

Left speaker

Altavoz izquierdo

Red

Rojo

Black

Negro

POWER

AC power cord x 1

●

Cable de alimentación de CA x 1

●

FM antenna x 1

●

Antena de FM x 1

●

■Antenna connection

■

Conexión de las antenas

● FM Antenna

●

Antena de FM

75 OHMS

■Remote control

Controlador remoto

■

● 2 “AA” size batteries

2 pilas del tamaño “AA”

●

● Batteries are not included.

Las pilas no están incluidas.

●

● AM Loop Antenna

Antena de cuadro

●

de AM

FM

GND

AM

● AC 120 V, 60 Hz

●

120 V de CA, 60 Hz

Remote Sensor

Sensor remoto

8" - 20'
(0.2 m - 6 m)

0,2 m - 6 m

2

CD

To stop playback

Para detener la reproducción

4

Listening to an MD /

POWER

1

MD

2

Audición de discos MD

5

PUSH CLOSE

6

To remove a MiniDisc

Para extraer un minidisco

4

3

● Label side facing up

Con el lado de la etiqueta

●

orientado hacia arriba

15

15

To stop playback

Para detener la reproducción

5

Listening to the radio /

POWER

1

2

Select “FM ST”,“FM”or“AM”

Seleccione “FM ST”,
“FM”o“AM”

TUNER

6

Sound control /

■ Volume

Volumen

■

■Extra bass (X-BASS)

Graves extra (X-BASS)

■

X-BASS

Audición de la radio

Control del sonido

X-BASS

Tune into the desired station.

3

Sintonizar la emisora deseada.

TUNING

■Pre-programmed equalizer

■

Ecualizador preprogramado

FLAT

■Surround

Sonido difuso

■

SURROUND

HEAVY

VOCALSOFT

SURROUND

7

Recording from a CD onto a MiniDisc (One-Touch Editing) /

Grabación de un disco CD a un minidisco (edición de un accionamiento)

POWER

1

2

8

CD

To stop recording

Para detener la grabación

Recording from the built-in radio onto MiniDisc /

Grabación desde la radio incorporada a un minidisco

1

Tune into the desired station.

Sintonice la emisora deseada.

TUNER

2

Load a recordable Minidisc.

Inserte un minidisco grabable.

Load a compact disc and a

3

recordable MiniDisc.

Inserte un disco compacto y un
minidisco grabable.

4

CD MD EDIT

4

Check the recordable time.

Compruebe el tiempo que puede grabarse.

DISPLAY

5

To stop recording

Para detener la grabación

– 10 –

3

REC

Front Panel

(E3)x1

(E1)x1
ø3x10mm

(E1)x1
ø3x10mm

Power/Tuner
PWB

Lug

Power PWB

(E1)x1
ø3x10mm

(E1)x1
ø3x10mm

(E2)x1

DISASSEMBLY

MD-M3/M1

Caution on Disassembly

The disassembling the machine or assembling it after
repair, observe the following instructions to ensure safety
and keep its performance.

1. Unload the compact disc, and mini-disc, cassette tape
from machine.

2. Be sure to unplug the power cable before starting
disassembly of the machine.

3. When disassembling each section, remove the nylon
band or wire arrangement.
After servicing the unit, be sure to rearrange the leads
where they were before disassembling.

If a screw of improper length is fit to the MD mechanism.

(A screw fit the part to the mechanism chassis of MD
section), it may contact the optical pickup, impeding
normal operation. Hence, due care must be taken.

4. While repairing, pay utmost attention to static electricity
on ICs.

MAIN UNIT MD-M3/M1

STEP

1 Top Cabinet 1. Screw ................ (A1) x4 11-1

2 Side Panel

3 Rear Panel 1. Screw ................ (C1) x4 11-1

4 Main PWB 1. Flat Wire............ (D1) x1 11-2

5 Power/Tuner PWB 1. Screw ................ (E1) x4 11-3

6 MD Unit and Holder 1. Screw ................ (F1) x4 12-1

7 Power PWB 1. Screw ................ (G1) x4 12-1

8 Front Panel 1. Screw ................ (H1) x2 12-1

9 Jack PWB 1. Screw ................ (J1) x1 12-2

10 Display PWB 1. Knob .................. (K1) x1 12-2

11 CD Mechanism 1. Screw ................ (L1) x3 12-3

REMOVAL PROCEDURE FIGURE

2. Socket ............... (A2) x3

(Right,Left)

1. Screw ................ (B1) x7 11-1

(Note 2)

(Note 2) 2. Lead Wire.......... (D2) x1

3. Screw ................ (D3) x6

4.

Socket(MD-M3) ....

4.

Socket(MD-M1) ....

5. Flat Cable.......... (D5) x4

2. Socket ............... (E2) x1

3. Flat Cable.......... (E3) x1

(Note 1,2) 2. Screw ................ (F2) x5

2. Nut..................... (K2) x1

3. Screw ................ (K3) x5

Note 1: When removing or reinstalling the MD unit, avoid a

short circuit by being careful not to allow it to touch the
PWB.(Replacement with the PWB installed)

Note 2: After removing the connector for the optical pickup

from the connector wrap the conductive aluminium foil
around the front end of connector so as to protect the
optical pickup from electrostatic damage.

Cares after repairing

After completion of repair of product set the following shipping
mode to return.

1.

Make sure that there is not a CD and MD disc in the tray.
Press and hold the PRESET EQUALIZER and STOP buttons,
and then press the POWER button to enter the TEST mode.

2. After the indication of FINISHED appears, unplug the power

cord. If this test mode is executed, the data stored by the
user in the preset memory are all cleared. It is necessary
tell and obtain the consent of user in advance.

(D4) x3
(D4) x2

– 11 –

MAIN UNIT

Side Panel

(B1)x3
ø3x10mm

(B1)x2
ø3x10mm

(D3)x2
ø3x10mm

Main
PWB

Lug

(D3)x1
ø3x10mm

(D3)x2
ø3x10mm

Top Cabinet

(Right)

(A1)x2
ø3x10mm

(C1)x4
ø3x10mm

(D3)x1
ø3x10mm

(D4)x1

(A2)x2

(A1)x1
ø3x10mm

Rear Panel

Figure 11-1

(D5)x1

Figure 11-2

Figure 11-3

(D5)x1

CD
Mechanism

(B1)x2
ø3x10mm

MD-M3 Only

(D4)x1

(D4)x1

(D1)x1

(A2)x1

Front Panel

(A1)x1
ø3x10mm

Side Panel

(D5)x2

Front Panel

(D2)x1

(Left)

Jack
PWB

Main
PWB

MD-M3/M1

(F2)x4
ø3x12 mm

(F2)x1
ø3x10mm

(F1)x2
ø3x10mm

Front Panel

MD Unit

MD Holder

Front Panel

(K1)x1

(K3)x2
ø2.6x10mm

(G1)x4
ø4x8mm

CD Mechanism

Power PWB

Figure 12-1

(L1)x3
ø2.6x10mm

Figure 12-3

(F1)x2
ø3x10mm

(H1)x2
ø3x10mm

Top Cabinet

Jack PWB

(J1)x1
ø2.6x10mm

(K3)x3
ø2.6x10mm

Nut
(K2)x1

Washer

Display PWB

Figure 12-2

SPEAKER CP-M1

STEP

1 Speaker 1. Net..................... (A1) x1 12-5

REMOVAL PROCEDURE FIGURE

2. Screw ................ (A2) x4

Woofer

(A2) x4
ø4 x12mm

Net

(A1) x1

SPEAKER CP-M3

STEP

1 Speaker 1. Net..................... (A1) x1 12-4

(A1) x1

REMOVAL

(Woofer/Tweeter) 2. Screw ................ (A2) x4

Net

PROCEDURE

3. Cover Ring ........ (A3) x1

4. Screw ................ (A4) x4

5. Cover Ring ........ (A5) x1

6. Screw ................ (A6) x2

(A5) x1

(A4) x4
ø4 x15mm

(A2) x4
ø4 x15mm

FIGURE

Sheet

Figure 12-4

Tweeter

(A3) x1

Screw Driver

(A6) x2
ø4 x10mm

Figure 12-5

Woofer

– 12 –

REMOVING AND REINSTALLING THE MAIN PARTS

(C1)x1
ø1.7x3mm

(C1)x1
ø1.7x9.5mm

Mechanism Switch PWB

MD-M3/M1

MD MECHANISM SECTION

For details about the procedure to remove the MD mechanism
from the main unit, refer to the Disassembly Procedure, Steps
1-6 in the main unit and also the MD section.
(Referring to p.11,12)

Caution:

After pulling out the optical pickup connector, wrap the
end of the connector in conductive aluminium foil to
prevent the optical pickup from being destroyed by
static electricity.

How to remove the magnetic head
(See Fig. 13-1)

1. Remove the screws (A1) x 1 pc.

Caution:

Take utmost care so that the magnetic head is not
damaged when it is mounted.

How to remove the cartridge holder
(See Fig. 13-2)

1. Open the roller arm lever in the arrow direction, and lower
the clamp lever to the rear side.

2. Apply +5V to the red line side of blue connector of loading
motor, push the rack gear in the arrow direction to move the
cam plate lever unit tick is heard.

3. Remove the screw (B1) x 1 pc., and the spring (B2) x 1
pc.,fitted to the holder arm, and shift the cartridge holder to
the left side to remove it.

MD Mechanism

Clamp Lever

Roller Arm Lever

Loading
Motor

(A1)x1
ø1.7x5mm

Magnetic Head

Figure 13-1

Slider Lever

Cartrdge Holder

(B1) x1
ø1.7x5mm

How to remove the mechanism switch PWB
(See Fig. 13-3)

1. Remove the screws (C1) x 2 pcs., and remove the mechanism
switch PWB.

Rack Gear

Cam Plate Lever

Figure 13-2

(B2) x1

Figure 13-3

– 13 –

MD-M3/M1

How to remove the sled motor/loading motor
(See Fig. 14-1)

1. Remove the screws (D1) x 4 pcs., and remove the sled
motor/loading motor.

Caution:

Be careful so that the gear is not damaged.
(The damaged gear emits noise during searching.)

How to remove the spindle motor
(See Fig. 14-2)

1. Remove the screws (E1) x 2 pcs., (E2) x 1 pc., and remove
the spindle motor.

(D1)x2
ø1.7x2mm

Loading Motor

(D1)x2
ø1.7x2mm

Sled Motor

Figure 14-1

Caution:

Be careful so that the turntable is not damaged.

How to remove the optical pickup
(See Fig. 14-3)

1. Remove the screws (F1) x 3 pcs.

Caution:

Be careful so that the gear is not damaged.
(The damaged gear emits noise during searching.)

Turntable

(E2)x1
ø1.7x2.1mm

(F1)x3
ø1.7x9.5mm

Spindle Motor

(E1)x2
ø1.7x2.5mm

Figure 14-2

Optical Picup

Figure 14-3

– 14 –

MD-M3/M1

CD MECHANISM SECTION

CD Cover

For details about the procedure to remove the CD mechanism
from the main unit, refer to Disassembly Procedure, Steps 1
,11 in the main unit and also the CD section. (p.11,12).

How to remove the optical pickup
(See Fig. 15-1.)

1. Remove the mechanism cover, paying attention to the
pawls (A1)x 4 pcs.

2. Remove the screws (A2)x 2 pcs., to remove shaft (A3)x 1
pc.

3. Remove stop washer (A4)x 1 pc., to remove the gear (A5)x
1 pc.

4. Remove the optical pickup.

Note:
After disconnecting the optical pickup connector wrap the
front end of connector in conductive aluminium foil to prevent
damage to the optical pickup by static electricity.

( A1 ) x4

Figure 15-1

TEST MODE

CD SECTION

CD test mode setting

Press and hold the CD and PLAY buttons, and then press the POWER button. -> Normal mode
Press and hold the CD and STOP buttons, and then press the POWER button. -> Hi-speed mode

( A2 ) x2
ø2.6 x6mm

CD Mechanism

Shaft
( A3 ) x1

Gear
( A5 ) x1

Stop Washer
( A4 ) x1

Optical Pickup

test mode

• Each step in the operation is only possible when the LID switch is ON in the CD test mode.
However, when a focus is not obtained in step 3, or when an error is detected, you cannot go forward.

• When the unit enters the error-handling mode, press the POWER button to end the test mode or press the STOP
button so that any further operations are prohibited, except for returning to step 1.

• When the / button is pressed in steps 2 - 5, the pickup will be slid.

▲

▲

• Flow chart in the CD test mode or less.

▲

▲

▲

▲

▲

▲

Entry

Step 1

Stop mode

Play

Stop

Stop

Stop

Step 2

Step 3

Step 4

Memory

Laser output ON

Memory

Focus search

Memory

CLV ON

Play

Play

Play

Stop

Step 5

Step 6

Press the POWER button at any time to cancel the test mode. The unit will return to the normal operation mode in which the power
to the unit is turned off.

Memory

Manual play

Normal play

Play

Stop

– 15 –

MD-M3/M1
MD SECTION

Test mode setting method

1. Holding down the MD FUNCTION button and FF(
(State A is changed to state B .)

2. Insert the playback disc 1 (high reflection disc) or recording disc 2 (low reflection disc).(State C is set.)
Thus, the test mode state is set.

A tsm 13 e : TEST MODE represents version of MD microcomputer.

STOP state (When the STOP button is pressed in the

B EJECT

C AUT YOBI

Entering the specific mode

Whenever the SURROUND button is pressed, the mode is changed.

AUTO pre-adjustment AUTO adjustment RESULT Pre-adjustment

)button, press POWER button switch.

indication

PRESET EQUALIZER button.)

A is restored. To restore C again, press the

C state, the

RESULT

EEPROM setting MANUAL adjustment MANUAL pre-adjustment

Cancel of test mode

To restore the usual state once reset.
*Before pressing the POWER button, be sure to perform the AUTO preliminary adjustment and the AUTO adjustment. Make
sure that they return a "COMPLETE" result.
*When the data of EEPROM was changed or the preliminary adjustment was performed again, be sure to press the POWER
button to write data in the EEPROM.
(Data is written in the EEPROM by pressing the POWER button.)
*When changing the EEPROM settings, write them into the EEPROM and then enter the test mode again. Perform the AUTO
preliminary adjustment and the AUTO adjustment. Then, write those into the EEPROM.

TUNER SECTION

• Test mode setting method

Holding down the TUNER button and PLAY/PAUSE button,
turn on POWER button switch. Frequency is set in the
memory (initial setting) as shown in Table 16.

Preset No. Frequency

P01 87.50 MHz P06 522 kHz
P02 108.00 MHz P07 1,620 kHz
P03 90.00 MHz P08 603 kHz
P04 106.00 MHz P09 1,404 kHz
P05 98.00 MHz P10 990 kHz

Table 16 Initial setting of memory

Preset No.

Frequency

– 16 –

ADJUSTMENT

TUNER SECTION

fL: Low-range frequency
fH: High-range frequency

• AM adjustment and confirmation

AM signal oscillator Frequency 400 Hz, 30%, AM modulation

Adjusting item

Adjusting object

IF Adjust the indication of Set IF waveform

T351 set to 1,720 kHz.

Frequency cover fL: T306 (530 kHz) fL: 1.1 ± 0.1 V
(VT line voltage of Adjust the indication fH: 8.0 ± 1.3 V of
pin 20 of IC302) of set to 530 kHz. (Only confirmation)

fH: (1,720 kHz)

Tracking fL: T302 (990 kHz) Set the output of

AM Loop Antenna

Adjusting

method

450 kHz to maximum.

speaker terminal
to maximum.

MD-M3/M1

• FM mute level adjustment

FM signal oscillator Frequency 1 kHz, 40 kHz

Frequency

Adjusting

method

98 MHz 25 dB VR351 Input: SO301

FM signal oscillator

Figure 17-2 FM Mute Level

SO301

Adjusting

object

UNIT

Adjusting object

Output: Speaker
Terminal

Speaker
Terminal

Electronic
voltmeter

IF : Speaker Terminal
Freqency cover: IC302,Pin 20

Electronic
voltmeter

FM signal oscillator

UNIT

GND

Loop Antenna

Figure 17-1 AM IF

• Erasing the registered broadcast station

When the power is off, press and hold the TUNER button and
the STOP button, and then press the POWER button.
All the registered stations are erased.

CD SECTION

• Adjustment

Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacing the pickup. Therefore, different PWBs and pickups
can be combined freely.
Each time a disc is changed, these adjustments are
performed automatically. Therefore, playback of each disc
can be performed under optimum conditions.

Items adjusted automatically

(1) Offset adjustment (The offset voltage between the head

amplifieroutput and the VREF reference voltage is
compensated inside the IC.)
* Focus offset adjustment
* Tracking offset adjustment

(2) Tracking balance adjustment (waveform drawing 17-4

EFBL)

(3) Gain adjustment (The gain is compensated inside the IC

sothat the loop gain at the gain crossover frequency will
be 0dB.)
* Focus gain adjustment
* Tracking gain adjustment

AM IF

T351

IC303

FM Mute Lebel

VR351

POWER/TUNER PWB

IC302

FE301

T306

AM Band Coverge

Figure 17-3 ADJUSTMENT POINT

T

Stopped

CH1=500mV

CH2=200mV

DC 10:1

CH3=1V

DC 10:1

=Record Length=

Main : 100K
Zoom : 2k

DC 10:1

T

FDO

1

TE

3

EFBL

2

Smoothing : ON CH1 : 0.000V
BW : FULL

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

Figure 17-4

20

T302

1999/04/05 20:26:47

500ms/div

(500ms/div)

NORM:20kS/s

=Trigger==Filter= =Offset=
Mode : SINGLE
Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2us

SO301
Antenna Terminal

AM Tracking

CH2
v/DIV
200mV

– 17 –

MD-M3/M1
MD SECTION

When the combination of mechanism/pickup and PWB was changed , set the TEST mode to perform the AUTO preliminary
adjustment and AUTO adjustment, write the adjustment data in EEPROM.
When EEPROM was replaced, set the TEST mode, write the EEPROM set data (p23,p24) and then perform the preliminary
adjustment and AUTO adjustment, write adjustment data in EEPROM.

1. Preparation for adjustment Test disc

Type

1 High reflection disc TGYS1 (SONY) [for Playback] RRCDT0101AFZZ
2 Low reflection disc Recording minidisc ––––––––––––

SONY 80 minutes disk is recommended.(example:PRISM 80)
3 Head Adjusting transparent RRCDT0103AFZZ
4 Low reflection disc Pre-adjustment disc [TEAC Test MD] 88GMMD-213A

Extension Cable (See Fig. 24)

Type

1 Extension PWB for servicing RUNTK0457AFZZ
2 Extension Connector (2 Pin) QCNWK0059AFZZ
3 Extension Connector (6 Pin) QCNWK0107AFZZ
4 Extension Cable (5 Pin) QCNWK0109AFZZ
5 Extension Cable (28 Pin) QCNWK0108AFZZ

Test disc

Part No.

Part No.

Execution item

required

Repair
operations

TEMP

basic setting

TEMP

Checking

EEPROM setting
EEPROM_SET

PICK replacement
HEAD replacement

MECHANISM
replacement

MAIN PWB
assembly replacement

MD microcomputer
replacement

MD LSI replacement
RF IC replacement

EEPROM IC
replacement

number , , , , and

indicate the order of inplementation.

" – " is an item that you don't have to execute.

AUTO-YOBI

adjustment

AUTO–YOBI

Writing the

EEPROM setting

Operation check

TEST-PLAY

TEST-REC

OK_EEPROM: "SET" and "YOBI COMPLETE" were written normally
WR_EEPROM:

NG_EEPROM: "SET" could not be written.

The EEPROM writing result is shown at the end of the test mode

Although "SET" was written normally, it was not written
in the "YOBI COMPLETE" state.

Peform "AUTO-YOBI" adjustment.
After making a normal adjustment, write the preliminary
adjustment into the EEPROM.

Check the connection between the MD microcomputer
and the EEPROM.

– 18 –

MD-M3/M1

• Test Mode

1. EJECT mode • TEMP setting (of EEPROM setting)

2. AUTO pre-adjustment mode • Automatic pre-adjustment is performed.

3. AUTO adjustment mode • Automatic adjustment is performed. (After adjustment the grating adjustment mode is set.)

• RESULT sub-mode • Therefore do not set this mode since it is not necessary for the service.

• RESULT mode (final adjustment)

• MANUAL pre-adjustment mode

• MANUAL adjustment mode

4. EEPROM setting mode • Various coefficients of digital servo are changed manually.

5. TEST-PLAY mode • Continuous playback from the specified address is performed.

6. TEST-REC mode • Continuous recording from the specified address is performed.

7. INNER mode • The position where the INNER switch is turned on is measured.

• CONTROL setting (of EEPROM setting)

• Setting of laser power (record/playback power)

• C1 error rate measurement, ADIP error rate measurement.

Above rank 4 bit HEX data

0

12 3

4567

0

1

2

3

4

5

6

7

8

9

Below rank 4 bit HEX data

A

10

B

11

C

12

D

13

E

14

F

15

NUL

BLANK

00h

SOH

BLANK

01h

STX

BLANK

02h

ETX

BLANK

03h

EOT

BLANK

04h

ENQ

BLANK

05h

ACK

BLANK

06h

BEL

BLANK

07h

BS

BLANK

08h

HT

BLANK

09h

LF

BLANK

0Ah

VT

BLANK

0Bh

FF

BLANK

0Ch

CR

BLANK

0Dh

SO

BLANK

0Eh

SI

BLANK

0Fh

DEL

BLANK BLANK

10h

DC1

BLANK

11h

DC2

BLANK

12h

DC3

BLANK

13h

DC4

BLANK

14h

NAK

BLANK

15h

SYN

BLANK

16h

ETB

BLANK

17h

CAN

BLANK

18h

EM

BLANK

19h

SUB

BLANK BLANK

1Ah

ESC

BLANK BLANK BLANK BLANK

1Bh

FS

BLANK BLANK BLANK

1Ch

GS

BLANK BLANK BLANK

1Dh

RS

BLANK BLANK

1Eh

US

BLANK BLANK

1Fh

SP

20h

!

21h

”

22h

#

23h

$

24h

%

25h

&

26h

’

27h

(

28h

)

29h

*

2Ah

+

2Bh

,

2Ch

_

2Dh

.

2Eh

/

2Fh

0

30h

1

31h

2

32h

3

33h

4

34h

5

35h

6

36h

7

37h

8

38h

9

39h

:

3Ah

;

3Bh

<

3Ch

=

3Dh

>

3Eh

?

3Fh

@

40h

A

41h

B

42h

C

43h

D

44h

E

45h

F

46h

G

47h

H

48h

I

49h

J

4Ah

K

4Bh

L

4Ch

M

4Dh

N

4Eh

O

4Fh

P

50h

Q

51h

R

52h

S

53h

T

54h

U

55h

V

56h

W

57h

X

58h

Y

59h

Z

5Ah

5Bh

5Ch

5Dh

^

5Eh

_

5Fh

`

60h

a

61h

b

62h

c

63h

d

64h

e

65h

f

66h

g

67h

h

68h

i

69h

j

6Ah

k

6Bh

l

6Ch

m

6Dh

n

6Eh

o

6Fh

p

70h

q

71h

r

72h

s

73h

t

74h

u

75h

v

76h

w

77h

x

78h

y

79h

z

7Ah

7Bh

7Ch

7Dh

7Eh

7Fh

Table 19 Character Table for MD Test Mode

– 19 –

MD-M3/M1

1. EJECT mode

Step No.

Step 1 Test mode EJECT state [ _ _ E J E C T _ _ _ ]
Step 2 Press once the DISPLAY button. Max. power output state [ X P W _ _ _ _ _ _ _ ]
Step 3 Press once the DISPLAY button. Playback power output state [ P P W _ _ _ _ _ _ _ ]
Step 4 Press once the DISPLAY button. Record power output state [ R P W _ _ _ _ _ _ _ ]
Step 5 Press the NORMAL button. TEMP setting of EEPROM setting

* Actual indicator character is shown on page 19 . ( See Table 19 )

Confirmation of pickup laser power

It is possible to confirm in the record/playback mode with the aid of laser power meter. However, since the laser power meter
measurement is characterized with dispersion, obtained data are used only for confirmation.
Reference data (at room temperature 25°C)
Playback: 0.72±0.1 mW
Record: 5.5±0.5 mW
Note: Never see directly the laser light. Otherwise your eyes are injured.

2. AUTO pre-adjustment mode (Low reflection disc only)

With the pre-adjustment disc (MMD-318)

Step No.

Step 1 Test mode STOP state [ t s m 1 3 e ]
Step 2
Step 3 Press the PLAY button. • During automatic adjustment changes as follows. [ : _ _ _ _ _ _ ]

Step 4 Grating adjustment, [ _ C O M P L E T E _ ]

Step 5 Adjustment value output [ C a n ' t _ A D J . ]

Press once the EQUALIZER button.

End of adjustment If adjustment is OK, Step 4.

adjustment value output
Press once the STOP button.

Press once the STOP button.

Setting Method

Setting Method

Remarks Display *

Remarks

AUTO pre-adjustment menu [ _ A U T _ Y O B I _ ]

HAo→ • • • • • • • • • →LAO

If adjustment is NG, Step 5.

STEP 2 AUTO pre-adjustment menu

STEP 2 AUTO pre-adjustment menu

Display *

• : Adjustment name

* Actual indicator character is shown on page 19 . ( See Table 19 )

3. AUTO adjustment mode

Step No.

Step 1 Test mode STOP state The AUTO preliminary adjustment should have been completed. [ t s m 1 3 e ]
Step 2
Step 3

Step 4 Adjustment value output For grating adjustment [ _ C O M P L E T E _ ]

Step 5 Continuous playback (pit section) Confirmation of CI error [ s c ]

Step 6 Press the DISPLAY button. Conformation of ADP error [ a a ]

Step 7 Adjustment value output [ C a n ' t _ A D J . ]

Press the EQUALIZER button two times.
Press the PLAY button.

End of adjustment If adjustment is OK, Step 4.

Press the PLAY button. STEP 5
Press the

Continuous playback (groove section)

Press the

Press the

Setting Method

AUTO adjustment menu [ A U T O _ A J S T _ ]
The slide moves to the innermost periphery, and automatic [ : _ _ _ _ _ _ ]

adjustment is started.

• In case of high reflection disc changes as follows.
PEG→HAG

•In case of low reflection disc changes as follows.
PEG→LAG→GCG→GEG→LAG

If adjustment is NG, Step 7.

STOP

button. STEP 2 AUTO adjustment

STOP

button. STEP 2 AUTO adjustment menu

STOP

button. STEP 2 AUTO adjustment menu

Remarks Display *

[ a c ]

• : Adjustment name, : Measurement value, : Address

* Actual indicator character is shown on page 19 . ( See Table 19 )

– 20 –

MD-M3/M1

4. EEPROM setting mode

Shown in page 23,24.

5. TEST-PLAY mode

(For confirmation of the playback ability at the named address.)

▲

▲

▲

Setting Method

▲

▲

Remarks

(Address + C1 error indication) [a c ]

. TEST-PLAY menu [ T E S T _ P L A Y _ ]

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

Display *

▲

▲

Step No.

Step 1 Test mode STOP state The AUTO preliminary adjustment should have been completed. [ t s m 1 3 e ]
Step 2 Press the NORMAL button. TEST-PLAY menu [ T E S T _ P L A Y _ ]
Step 3 Press once the DISPLAY button. ADDRESS setting (Target address initial value is indicated) [ A D R E S _ 0 0 5 0 ]

Step 4 Continuous playback (pit section) (Address + C1 error indication) [s c ]

Step 5 Press once the DISPLAY button. (Address + ADIP error indication) [a a ]

Step 6

Press once the PLAY button.

Continuous playback (groove section)

Continuous playback (groove section)
Press once the STOP button

* Actual indicator character is shown on page 19 . ( See Table 19 )

• If the STOP button is pressed while the TEST-PLAY menu is displayed, TEST mode STOP state is set.

• If the PLAY button is pressed while the TEST-PLAY menu is displayed, continuous playback is started from the current pickup position.

• Whenever the NORMAL button is pressed in the address setting mode, the address changes as follows.
0 0 5 0 → 0 3 C 0 → 0 7 0 0 → 0 8 A 0 → 0 0 5 0 → …………

• Whenever the DISPLAY button is pressed in the address setting mode, the digit which is changed with / changes
as follows.
0 0 5 0 → 0 0 5 0 → 0 0 5 0 → 0 0 5 0 → …………

• The digit of address which has been specified with / button in the address setting mode is set to +01H/-01H.(0~F)
* If the / button is held down, the setting changes continuously with 100 ms cycle.

▲

▲

▲

6. TEST-REC mode

With recording mini disk (For confirmation of the playback ability at the named address.)

Step No.

Step 1 Test mode STOP state The AUTO preliminary adjustment should have been completed. [ t s m 1 3 e ]
Step 2 Press twice the NORMAL button. TEST-REC menu [ T E S T _ R E C _ _ ]
Step 3 Press once the DISPLAY button. ADDRESS setting (indication of address initial value) [ a 0 0 3 2 _ p w ]
Step 4

Step 5

Press once the PLAY button.

Press once the STOP button.

Setting Method

Remarks Display *

While searching, set the search output to "H". To start continuous play,
return it to "L".
Continuous recording

TEST-REC menu [ T E S T _ R E C _ _ ]

[ a p w ]

* Actual indicator character is shown on page 19 . ( See Table 19 )

• If the STOP button is pressed while the TEST-PLAY menu is displayed, TEST mode STOP state is set.

• If the PLAY button is pressed while the TEST-REC menu is displayed, continuous record is started from the current pickup position.

• Whenever the NORMAL button is pressed in the address setting mode, the address changes as follows.

• Whenever the DISPLAY button is pressed in the address setting mode, the digit which is changed with / changes
as follows.

• The digit of address which has been specified with / button in the address setting mode is set to +01H/-01H.(0~F)
* If the / button is held down, the setting changes continuously with 100 ms cycle.

• Be sure to remove since excessive raising results in breakage of the pickup.

0 0 5 0 → 0 3 C 0 → 0 7 0 0 → 0 8 A 0 → 0 0 5 0 → …………

0 0 5 0 → 0 0 5 0 → 0 0 5 0 → 0 0 50 → …………

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

▲

7. INNER mode

Step No.

Step 1 Test mode STOP state [ t s m 1 3 e ]
Step 2 Press the CD button. INNER menu [ _ _ I N N E R _ _ ]
Step 3

Step 4

• : Address

Press once the PLAY button.

Press once the STOP button.

Setting Method

Remarks Display *

INNER switch position measurement [s c ]
(SUBQ address and C1 error are also indicated.)

INNER menu [ _ _ I N N E R _ _ ]

* Actual indicator character is shown on page 19 . ( See Table 19 )

– 21 –

MD-M3/M1

Lead-in switch position measurement mode

Insert High reflection test disk (TGYS1)
Note: Adjust the lead-in switch position to FF85 to FFDF.

1. Loosen the screw (A) x 2 pcs. which fix the mechanism switch
PWB.

2. Retighten the screw, pressing the mechanism switch PWB in
the arrow direction, and then measure the lead-in switch
position again.

After position adjustment fix with the two screws (A). (See Fig. 22-1.)
Note: After tightening the two screws on the PWB apply Screw Lock.

Forced rotation of loading motor

When STOP or EJECT appears in the display and the VOLUME
CONTROL knob is rotated (up or down), it allows the loading motor
to be forced to run (loading and unloading operations).

Adjustment of magnetic head mounting position

When the magnetic head and optical pickup have been replaced, be
sure to adjust the mounting position.
For easier adjustment of mounting position move the optical pickup
to the center position, and then adjust the position.

1. Set the adjusting transparent disc 3.

2. Lower the magnetic head up-shift arm with your finger, and raise
the magnetic head.

3. Viewing the set from above, make an adjustment so that the
magnetic head aligns with the optical pickup objective lens.

4. Make sure that there is a clearance as shown in Figure 22-2 and
the magnetic head moves up and down smoothly.

Loosen the
two screws (A).

Mechanism Switch PWB

Magnetic head

Objective lens

Radial direction

Lead In Switch

Figure 22-1

Tangential direction

Push

Mechanism Adjustment

1. Optical pickup grating inspecting method

43 Pin of IC1101

GND (TP1125)

26 Pin of IC1101

EOUT (TP1129)

25 Pin of IC1101

FOUT (TP1130)

100K

470p

470p

100K

OSILLOSCOPE

GND CH1 CH2

XY

b

LISSAJOUS'S WAVEFORM

Less than a:b = 4:1

a

Figure 22-3 Optical Pickup Grating Deviation

Measuring Method

After the automatic adjustment has been performed in the AUTO
mode (test mode) using the low reflection test disk MMD212 (TEAC)
("COMPLETE" will have been displayed), adjust the Lissajous
waveform (x-y) using EOUT and FOUT.

1. Slightly loosen the 3 screws of spindle motor, and make an

adjustment, observing the Lissajous's waveform.

2. After the adjustments are complete, tighten the screws in numerical

order: 1 , 2 and then 3 . (See Fig. 22-4.)

Spindle Motor

Adjusting hole

1

1

3

Spindle motor

adjusting
hole

2

Magnetic head

Figure 22-2

3

2

Check the Lissajou's waveform,
shifting the mounting position with
a screwdriver (to be fitted into the
disc motor adjusting hole).

Figure 22-4

– 22 –

EEPROM WRITING PROCEDURE

MD-M3/M1

EEPROM (IC1402) writing procedure

1. Method for setting the reference temperature value

(This setting should be performed quickly at a room
temperature, between 21 C and 29 C when the PWB is not
hot.)

(1) When replacing the EEPROM, wait until it has cooled down.
(2) Connect the main unit using the single MD main PWB.
(3) Enter the test mode as shown on page 20.

"EJECT"

(4) Press the NORMAL button.

"TEMP "

:Measured temperature, : Temperature setting

(5) Find the temperature correction value for the current ambient

temperature on the following table. Adjust the temperature
correction value using the jog dial.

Ambient temperature

+ 21.0 °C ~ + 23.2 °C -1 H
+ 23.3 °C < + 26.8 °C ± 0 H
+ 26.9 °C < + 29.0 °C +1 H

An example: When ambient temperature is 22°C and measured

temperature is 7AH
Temperature setting = 7A H - 01 H

= 79 H
* When the measured temperature fluctuates between
two values, take lower one (if temperature fluctuates
between 7AH and 79H, take 79H).

(6) Press the POWER button and write the temperature setting into

the EEPROM.

correction

2. Method for making settings other than the reference
temperature

(1) Install the MD main PWB in the mechanism, and connect it to

the main unit.

(2) Enter the test mode as shown on page 20, and insert a disc.

"AUTO YOBI"

(3) Press the PLAY MODE button six times.

"EEPROM SET"
(4) Selection mode using the PLAY/PAUSE button.
(5) Selected using the PRESET EQUALIZER button.
(6) Determined by the PLAY/PAUSE button.
(7) Using the jog dial, adjust the settings as shown in the "List of the

EEPROM contents".
(8) Press the POWER button, and the settings will be written into

the EEPROM.
(9) Enter the test mode again, perform an "AUTO YOBI", and write

its results into the EEPROM.

EEPROM DATA LIST (Version : 01)
Focus setting

Item indication

F G D A H
F F 1 7 0 H
F F 2 E 0 H
F Z H L E V E D H
F O K L E V n 0 8 H
F O K L E V f 0 8 H
F O K L P F n 0 0 H
F O K L P F f 8 8 H
W A I T f 9 0 H

Spin setting

Item indication

S P G 2 0 H
S P G — i n B 8 H
S P G — m i d 9 5 H
S P G — o u t 7 9 H
S P 1 1 0 H
S P 2 8 7 H
S P 3 E 3 H
S P 4 E 3 H
S P 5 1 0 H
S P D L I M 7 F H

Tracking setting

Item indication Setting

T G 6 B H
T F 1 6 B H
T F 2 E 0 H
S V C N T 4 0 0 H
T R B L V o 5 0 H
T R B L V t 5 4 H
T R K L V o 5 0 H
T R K L V t 2 E H
T D P W o 8 9 H
T D P W t 1 A H
S L C T o 0 0 H
S L C T t 4 0 H
S L C T m 5 3 H
T C R S C I P 1 6 H
C O T L V P 0 A H
C O T L V r 1 C H
W A I T m F F H

Setting

Setting

– 23 –

MD-M3/M1

Slide setting

Item indication

S L G 3 B H
S L 2 1 8 H
S L D L I M 7 F H
S L D L E V 1 2 H
S L K L V k 5 0 H
S L K L V t 3 A H
S L K L V m 4 C H

ADJUST setting

Item indication Setting

C O K A 0 H
F A T C 0 H
T A T 3 E H
C A T 2 0 H
F A B 6 4 H
S T R 0 A H
S F S 0 D H
S T C 0 D H

Setting

Control setting

Item indication Setting

C O N T R L 1 8 0 H
C O N T R L 2 0 2 H
S P K L E V m 2 6 H
A D J T T M 1 4 H
H D E Q A D 9 2 H
L D E Q A D 8 F H
G D E Q A D 8 D H
H D E Q B C 8 C H
L D E Q B C 8 F H
G D E Q B C 8 D H
H A L S G 2 1 H
L A L S G 2 1 H
G A L S G 1 1 H
H A L S O F S F E H
L A L S O F S 0 0 H
G A L S O F S 0 0 H

5Pin extension flat cable
QCNWK0109AFZZ

CN1601(Bottom side)

CN1602
CN1603

CN1604(Bottom side)

MD MAIN PWB

6P-2P extension connector
QCNWK0107AFZZ

CN1252

CN1101

2Pin extension connector
QCNWK0059AFZZ

From
motor

From mecha­nism switch
PWB

28Pin extension
flat cable
QCNWK0108AFZZ

Figure 24

From Magnetic Head

From Optical
Pickup Unit

Extension PWB for service
(RUNTK0457AFZZ)
Fit the extension PWB for service to the mechanism

EXPLANATION OF MECHANISM ERROR

Error display

MECHA _ * _ ERR None of the operations is completed properly.

HINF (IC1401 97 PIN)
* = E Ejection completion position < 1.3 V
* = M Horizontal midway position > 3.06 V
* = L Load completed position 1.853~2.48 V
* = DHead-down position 1.3~1.853 V

Errors

– 24 –

EXPLANATION OF ERROR DISPLAY

MD-M3/M1

Error display

Can't REC

Can't COPY

TOC FULL

UTOC R ERR

UTOC A ERR

UTOC L0~4 ERR

NOT AUDIO

? DISC

DISC FULL

PLAY MD

PROTECTED

Can't EDIT

TEMP OVER

MD RD ERR
MD PA ERR
MD WR ERR

TOC S ERR
TOC R ERR
TOC T ERR

UTOC W ERR

FOCUS ERR

BLANK MD

TOC W ERR

MD ERR

Errors

• Defect occurred successively 10 times during REC-PLAY.

• As a result of occurrence of defect during REC-PLAY the
recordable cluster became zero.

• Address is unreadable. REC state cannot be set for 20
seconds although retry is repeated.

• The following judgement is made according to the channel
status of digital signal which was input from D-IN during REC­PAUSE or REC-PLAY.
(1) Other than audio signal
(2) Other than signals of home-use appliances
(3) Copy NG due to inversion of copy bit in CD.

• There were no areas to record music or character

information. (music name, disc name, etc.) during REC-PLAY.

• FTNO > LTNO

• FTNO ≠ 0 or 1

• UTOC recorded on disc could not be read.

• Start address > End address

• Any data of UTOC 0 to 4 looped.

• Nonaudio data was recorded in the track mode of currently
selected TNO.

• Data "MINI" of system ID which has been written in TOC with
ASCII code is not correct.

• The disc type written in TOC does not correspond to pre/
mastered MD, recording MD and hybrid MD.

• When an attempt to set REC-PAUSE was made, there were no
recordable areas.

• An attempt to set REC-PAUSE or to start editing was made on
the playback-only disc.

• An attempt to record or edit was made on the record/playback
disc with its careless erase preventing tab being in erase
preventing state.

• An attempt was made to edit the track which was write­protected by information written in UTOC.

• It is indicated when a tape is faulty operation prevention

condition. (tabs breaks.)

• Specific editing conditions were not satisfied.

• Cover the write-protect hole with a piece of cellophane tape.

• Owing to occurrence of some trouble internal temperature of
set (MD unit) rose excessively.

• Read data was not correct or data could not be read correctly.

• Trouble occurred during recording if music data, resulting in
record failure.

• TOC was read but data was not correct.

• TOC could not be read.

• Trouble occurred during rewriting of UTOC, resulting in UTOC
rewriting failure.

• After the disc was loaded, focusing failure occurred.

• UTOC was read but total TNO and the number of characters of
NAME was 0?

• Although UTOC can be read but UTOC cannot be rewritten.

• Data of EEPROOM is not correct.

Corrective action

• Check that the disc is free from flaw, dust
and fingerprint.
Check whether there is any black spot.
Check for disc disalignment and run-out.

• Check whether CD is copy-inhibited one.
(An example: CD-R)

• Replace the disc with a recording/
playback disc in which an area to register
UTOC remains.

• UTOC data is not normal. Replace the
disc with other disc.

• UTOC data is not normal. Replace the
disc with other disc.

• UTOC data is not normal. Replace the
disc with other disc.

• Select other TNO or replace the disc with
other disc.

• The loaded disc is not applicable.
Replace the disc, and check.

• Replace the disc with other recording disc
in which recording area remains.

• The loaded disc is a playback-only disc.
Replace the disc with a recording disc.

• Return the careless erase preventing tab
to its initial position, and redo.

• The track on which an attempt to edit was
made is a write-protected track. Redo on
another track.

• Cover the accidental erase prevention
holes with adhesive tape.

• The applied operation procedure is not
proper. Redo, applying the correct
procedure.

• Check by troubleshooting.

• Check whether the ambient temperature
is too high.

• Data of TOC or UTOC is not normal or
disc has flaw. Replace the disc with other
disc.

• The TOC information recorded on disc
does not conform to the MD standard.
Replace the disc with other disc.

• The disc has flaw. Replace the disc with
other disc.

• The disc has flaw. Replace the disc with
other disc.

• Check that the disc is free from flaw,
dust, fingerprint and black spot. Check for
disc disalignment and run-out.

• Perform recording to check that the disc
is recordable disc.

• Check that the record head contact is
normal. Check that there is no broken
wire between PWB and the recording head.

• Perform adjustment

• Once reset, and redo. If error occurs
persistently, replace EEPROM.

– 25 –

MD-M3/M1

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

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

• Schematic diagram and Wiring Side of P.W.Board for this model are
subject to change for improvement without prior notice.

REF.NO. DESCRIPTION POSITION REF.NO. DESCRIPTION POSITION
SW1

SW2
SW1952
SW1953
SW1954
SW1955
SW1956
SWD01
SWD02
SWD08
SWD10
SWD11
SWD12
SWD13

CD Lid
Pickup In
Dirtect
Lead In
Play
Rec
Loading
POWER
DISPLAY
MD EJECT
SURROUND
EQUALIZER
X-BASS
AUX

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

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

1. In the tuner section,

( ) indicates AM
< > indicates FM stereo

2. In the CD section, the CD is stopped.

• 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.

SWD14
SWD15
SWD16
SWD19
SWD20
SWD21
SWD22
SWD23
SWD24
SWD24
SWD25
SWD26
SWD28
SWR11

TUNER
CD
MD
FF
REV
PLAY
STOP
HIGH (MD-M3 ONLY)
NORMAL (MD-M3 ONLY)
CD MD EDIT (MD-M1 ONLY)
REC
MEMORY
VOLUME
DEMO

NOTES ON SCHEMATIC DIAGRAM

OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF

(FRONT VIEW)

BCE

2SB1375
2SD2012

FRONT VIEW

KV1236Z23F

FRONT

VIEW

ECB

KTA1023 Y

TYPE OF TRANSISTOR AND LED

FRONT

VIEW

E

C

(S)

(G)

(1)

(2)

HSC1815 GR
KRA107 M
KRC104 M
KRC107 M
KTC3199 GR

1N4004S 1SS133

Figure 26 TYPES OF TRANSISTOR/DIODE AND LED

(D)

B

FRONT

VIEW

B

(3)

(S)
(1)

E

C

B

(G)

(D)

(2)

(3)

HSA1015 GR
KTA1266 GR
KTA1270 Y
KTA1271 Y
KTC3203 Y

(D)
(3)

TOP

VIEW

E
(S)
(1)

RNC1404
RN1406
RN2404
RNC1407
2SA1162 G
2SC2412 KR
2SK2909

(G)

C

(2)

FRONT

VIEW

G D S

2SK1473

TOP VIEW

SB0209CP

FRONT

VIEW

B C E

2SA1314 C

TOP VIEW

SB007-03Q

2SC2878 A
2SC380 O

FRONT

VIEW

SLI342UCB

AC AC

TS4B03GM

– 26 –

MD-M3/M1

M902

SLED

MOTOR

M

M

SPINDLE

RECORDING
HEAD

M901

MOTOR

PICKUP UNIT

LIGHT
RECEIVING
SECTION
ERROR,
SIGNAL

LIGHT
RECEIVING
SECTION
RF

LASER DIODE

MONITOR DIODE

FOCUS

TRACKING

F
A
B
E

RF1
RF2
RF3
RF4

TC74ACT02F

MD

E-F SIGNAL A-B SIGNAL

RF1~RF4 SIGNAL

E-F

SW1952

WRITE PRO

DISC ID

LEAD IN SW1953

PLAY SW1954

REC SW1955

LOAD IN SW1956

IC1300

HEAD

DRIVER

IC1101

IR3R55

RF

SIGNAL

PROCESSOR

3.2V

6.5/4.75~5.25V

3.2V

XL1201

33.8688MHz

3.2V

IC1201

LR376484

ATRAC ENCODER/DECODER

MICROCOMPUTER

S29294A

EEPROM

IC1202

IX2474AF

4M BIT
D-RAM

3.2V

IC1401

IX0290AW

MD SYSTEM

3.2V

IC1402

EXT.
PLL

BACKUP

MECHANISM

6.5/4.75~5.25V

LRSY

1

GND

2

GND

3

DATA

4

CN1502

MD-M3 ONLY

28P FFC

1

DIGOUT

2

D.GND

3

DIGIN

4

BACKUP

5

PDOWN

6

RESET

7

MD-ST

8

DSCK

9

SERCH

10

KDATA

11

MDDATA

12

DSTB

13

D.GND

14

D.GND

15

D.GND

16

D.GND

17

DVDD

18

DVDD

19

PSWCK

20

LOADSW

21

AVCC

22

L.IN

23

AA.GND

24

R.IN

25

AD.GND

26

L.OUT

27

AA.GND

28

R.OUT

CN1501

IC1601

BA5984FP

MOTOR DRIVER

M903

M

LOARDING MOTOR

BOTH HEAD UP
and DOWN

DIGITAL

3.2V

6.5/4.75~5.25V

XC62EP32

REGULATOR

IC1702

NJM431U

REGULATOR

6.5/4.75~5.25V

A/D CONVERTER
D/A CONVERTER

Figure 27 BLOCK DIAGRAM (1/5)

– 27 –

IC1801

3.2V

IC1701
UDA1344

AUDIO INPUT

AUDIO OUT

MD-M3/M1

+

+

-

P

L

SO301

ANTENNA

AM

GND

FM

75 OHMS

T306

AM

OSC

COIL

+5V

ANT

8

GND

GND

2

6

FM/AM

TUN MUTE

MO/ST
STEREO

SD

Q361

AM MIX OUT

T351

AM IF

+5V

T302

AM

ANT

COIL

FE301

FM FRONT END

GND

7

7

BO1

NC

B02

8

B03

9

TUNER PLL COTROLLER

B04

10

IO1

11

IO2

13

AOUT

20

VT

FM MUTE LEVEL

VR351

AM OSC OUT

SD

6

STEREO

7

MO/ST

13

FM/AM

12

2

AM IF IN

CF352

CF302

FM IF

IF OUT

VCO

FOUT

VT

3 4

IC302

LC72131

PD

AIN

FM IN

19

16

18

15

24

IC303

LA1832S

FM IF DET./

FM MPX./AM IF

MPX
VCO

4

8

17

FM DET

CF351

456kHz

1
5

CEDICL

4 3

AM IN

IF IN

12

IF OUT

10

1

IF IN FM

X351

FM +B

6

5

22

4.5MHz
X352

SM

20

DO

Q371

XIN

XOUT

1

+5V

9

VCC

MPX IN

FM/AM OUT

16

18

SWITCHING

FM/AM

VSS

VDD

21

17

TUN MUTE

LOUT

4

1

5

1

ROUT

Q360

Q353
Q354

TUNER
MUTE

+12V

Q351

+B3

AMP

+5V

VOLTAGE
REGULATOR

+B3

VRR11

AUX INPUT

LEVEL

VOLTAGE REGULATOR

+2.7V

VDD

10

MD/CD

2

A

19

AUX

3

B

18

TUNER

4

C

17

5

D

16

12

VSS

–2.7V

VOLTAGE REGULATOR

IC901

XC61CN40

RESET

+B9

AUX INPUT

AUDIO

Function/Volume/Tone

M62439SP

AUDIO PROCESSOR

9

GND

JR11

ICP11

REC TONE
OUT H L

1

20

6

3

+B3

15

–B2

+B2

+B3

VCC

1
3

+B3

–B2

10

SURROUND

Q

RESET

Q904

1 2

8

13

CONT

11

14

7

SY-STOP +5V(D)

OUT

DI

CL

Figure 28 BLOCK DIAGRAM (2/5)

– 28 –

3

1

ICP81

NJM4565D

REC. AMP.

CNP14 26/28PIN

CNP14

TO CD SECTION

6

4

7

22/24PIN

8

TO DISP

VDD
VSS