Sharp MD-M3 User manual

– 1 –
MD-M3/M1
CONTENTS
MD-M3
SERVICE MANUAL
SHARP CORPORATION
No.S6940MDM3M1//
• 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.
This document has been published to be used
for after sales service only.
The contents are subject to change without notice.
Page
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.)
MD-M3 MD micro System consisting of
MD-M3(main unit) and CP-M3(speaker
system).
MD-M1 MD micro System consisting of
MD-M1(main unit) and CP-M1(speaker
system).
Illustration: MD-M3
Illustration: MD-M1
MD-M1

MD-M3/M1
– 2 –
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
pinchedorthathardwareisnotlodgedbetweenthechassis
and other metal parts in the audio product.
2. Inspectallprotectivedevicessuch asinsulating 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).
* Connecttheresistorconnectiontoallexposedmetalparts
havingareturnpathtothechassis(antenna,metalcabinet,
screw heads, knobs and control shafts, escutcheon, etc.)
and measure the AC voltage drop across the resistor.
AllcheckmustberepeatedwiththeAClinecordplugconnection
reversed.
Anyreadingof0.3 voltRMS(thiscorrespondsto0.2milliamp.
AC.) or more is excessive and indicates a potential shock
hazard which must be corrected before returning the audio
product to the owner.
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µ F
1.5k ohms
10W
VTVM
AC SCALE

– 3 –
MD-M3/M1
Specifications for this model are subject to change without
prior notice.
SPECIFICATIONS
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
●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
●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)
●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)
●Tuner 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
●Speaker section
Type (MD-M3): 2-way speaker system
4-3/4" (12cm) woofer,
3/4" (2cm) tweeter
Type (MD-M1): Full range speaker system
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
MD-M3/M1
CP-M3/M1

MD-M3/M1
– 4 –
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. CD MDNormal Speed Edit Button (MD-M3 ONLY )
14. CD MD Edit Button (MD-M1 ONLY)
15. CD MD High Speed Edit Button (MD-M3 ONLY)
16. Surround Button
17. Preset Equalizer Button
18. Extra Bass Button
19. Headphone Jack
20. Volume Control
■Rear panel
1. Speaker Terminals
2. FM 75 Ohms AntennaTerminal
3. Antenna Ground Terminal
4. AM Loop AntennaTerminal
5. Auxiliary Input (Analog) Level Control
6. Demo Switch
7. Auxiliary Input (Analog) Jacks
8. AC Power Input Jack
1
2
310
4
5
6
7
8
11
12
13
14
15
16
17
18
19
20
9
2
3
5
6
7
8
1
4
14
▲
MD-M1

– 5 –
MD-M3/M1
■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) RemainingTime 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
2
3
4
■Speaker section
1. Tweeter
2. Woofer
3. Bass Reflex Duct
4. Speaker Terminals
■Speaker section
1. Full-Range Speaker
2. Bass Reflex Duct
3. Speaker Wire
3
1
2
CP-M3
CP-M1
L
R
OVER
ST
DISC TOC
SURROUND
X-BASS
TRACK
MEMORY
RANDOM
TOTAL
REMAIN
REC
PLAY
RECkHz
MHzSLEEP
AM PM
1
2
L
R
OVER REC
PLAY
RECkHz
MHzSLEEP
AM PM
ST
DISC TOC
SURROUND
X-BASS
TRACK
MEMORY
RANDOM
TOTAL
REMAIN
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 21

MD-M3/M1
– 6 –
■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
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
1
2
3
5
7
48
9
10
11
1312 14
15 16 17
19 21
20
24
22
23 25
18
6

– 7 –
MD-M3/M1
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
Adjustthe hour by pressing the or button.
DISC TOC TRACK MEMORY RANDOM TOTAL REMAIN RECkHz
MHzSLEEP
●Whenthe button is pressed once,the time will
increaseby 1hour. Whenthe buttonis 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
pressedonce, thetime willdecrease by 1minute.
●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: ●Theclock display will flash onand offat the push
of the CLOCK button when theAC 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
RESETTINGTHE MICROCOMPUTER
MAINTENANCE
Internal care
Donot touch theLaser pickup lens.If fingerprints or dust accumulate on the pickup, clean it gently with a dry cotton swab.
External care
Periodicallywipe the cabinetwith a softcloth and adiluted soapsolution, thenwipe with adry 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, abnormalsupply voltage dueto lightning, etc.) or if it is operated incorrectly, it may malfunction or the display maynot functioncorrectly. Ifsuch a prob- lem occurs, do the following:
1
Press the POWER button to enter the stand-by mode.
2
Press the POWER button while holding down the EQUALIZER button and the PLAY button.
“ALL CLEAR” will appear.
Caution:
Theoperation explained abovewill erase alldata stored in memory including clock and timer settings, and tuner, MD and CD presets.
1,2
2
NO
YES Correct
Compactdiscs are fairly resistant to damage,how- evermistracking 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 CDis dirty ordoes not playprop- erly, clean it with a soft, dry cloth, wiping straight out from the center, along the radius.
Illustration:MD-M3

MD-M3/M1
– 8 –
■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 TOC 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

– 9 –
MD-M3/M1
MD MICRO SYSTEM
Quick Guide/Guía rápida MD-M3
●Remote control x 1
●
Controlador remoto x 1
Remote Sensor
Sensor remoto
2 Preparation for use / Preparación para su uso
1 Check the supplied accessories / Compruebe los accesorios suministrados
●AM loop antenna x 1
●
Antena de cuadro de AM x 1
■Speaker connection
■
Conexión de los altavoces
■Antenna connection
■
Conexión de las antenas
●AM Loop Antenna
●
Antena de cuadro
de AM
●FM Antenna
●
Antena de FM
●AC 120 V, 60 Hz
●
120 V de CA, 60 Hz
■Turning the power on and off
■
Conexión y desconexión de la alimentación
■Remote control
■
Controlador remoto
POWER
POWER
●AC power cord x 1
●
Cable de alimentación de CA x 1
Negro
Rojo
●2 “AA” size batteries
●
2 pilas del tamaño “AA”
●Batteries are not included.
●
Las pilas no están incluidas.
●FM antenna x 1
●
Antena de FM x 1
●Speaker wire x 2
●
Cable del altavoz x 2
●Speaker cushion x 8
●
Almohadilla del altavos x 8
Red
Rojo
Red
Black
Negro
Black
LEFT
RIGHT
RATESD SPEAKER
IMPEDANCE :
4 OHMS MIN.
Right speaker
Altavoz derecho Altavoz izquierdo
Left speaker
AM
FM
75 OHMS
GND
15
15
8" - 20'
(0.2 m - 6 m)
0,2 m - 6 m
POWER
CD EJECT
POWER
MD
PUSH CLOSE
14
5
3
3 Listening to a CD / Audición de discos CD
1
2
●Label side up
●
Con el lado de la
etiqueta hacia arriba
4 Listening to an MD / Audición de discos MD
To remove a MiniDisc
Para extraer un minidisco
3
●Label side facing up
●
Con el lado de la etiqueta
orientado hacia arriba
To stop playback
Para detener la reproducción
4
To stop playback
Para detener la reproducción
CD
2
6
POWER
TUNER
TUNING
1
23
5 Listening to the radio / Audición de la radio
Select“FMST”,“FM”or“AM”
Seleccione “FM ST”,
“FM”o“AM”
Tune into the desired station.
Sintonizar la emisora deseada.
6 Sound control / Control del sonido
■Volume
■
Volumen
■Extra bass (X-BASS)
■
Graves extra (X-BASS)
■Pre-programmed equalizer
■
Ecualizador preprogramado
■Surround
■
Sonido difuso
X-BASS
X-BASS
SURROUND
SURROUND
FLAT
VOCALSOFT
HEAVY
POWER
CD
7 Recording from a CD onto a MiniDisc (One-Touch Editing) /
Grabación de un disco CD a un minidisco (edición de un accionamiento)
1
2
3
Load a compact disc and a
recordable MiniDisc.
Inserte un disco compacto y un
minidisco grabable.
8 Recording from the built-in radio onto MiniDisc /
Grabación desde la radio incorporada a un minidisco
To stop recording
Para detener la grabación
4
CD MD EDIT
HIGH NORMAL
5
To stop recording
Para detener la grabación
3
REC
1
Tune into the desired station.
Sintonice la emisora deseada.
TUNER
2
Load a recordable Minidisc.
Inserte un minidisco grabable.
DISPLAY
4
Check the recordable time.
Compruebe el tiempo que puede grabarse.

MD-M3/M1
– 10 –
MD MICRO SYSTEM
Quick Guide/Guía rápida MD-M1
Remote Sensor
Sensor remoto
2 Preparation for use / Preparación para su uso
1 Check the supplied accessories / Compruebe los accesorios suministrados
■Speaker connection
■
Conexión de los altavoces
■Antenna connection
■
Conexión de las antenas
●AM Loop Antenna
●
Antena de cuadro
de AM
●FM Antenna
●
Antena de FM
●AC 120 V, 60 Hz
●
120 V de CA, 60 Hz
■Turning the power on and off
■
Conexión y desconexión de la alimentación
■Remote control
■
Controlador remoto
POWER
POWER
●2 “AA” size batteries
●
2 pilas del tamaño “AA”
●Batteries are not included.
●
Las pilas no están incluidas.
Right speaker
Altavoz derecho Altavoz izquierdo
Left speaker
AM
FM
75 OHMS
GND
15
15
8" - 20'
(0.2 m - 6 m)
0,2 m - 6 m
●Remote control x 1
●
Controlador remoto x 1
●AM loop antenna x 1
●
Antena de cuadro de AM x 1
●AC power cord x 1
●
Cable de alimentación de CA x 1
●FM antenna x 1
●
Antena de FM x 1
Negro
Rojo
Red
Rojo
Red
Black
Negro
Black
LEFT
RIGHT
RATESD SPEAKER
IMPEDANCE :
4 OHMS MIN.
POWER
CD EJECT
POWER
MD
PUSH CLOSE
14
5
3
3 Listening to a CD / Audición de discos CD
1
2
●Label side up
●
Con el lado de la
etiqueta hacia arriba
4 Listening to an MD / Audición de discos MD
To remove a MiniDisc
Para extraer un minidisco
3
●Label side facing up
●
Con el lado de la etiqueta
orientado hacia arriba
To stop playback
Para detener la reproducción
4
To stop playback
Para detener la reproducción
CD
2
6
POWER
TUNER
TUNING
1
23
5 Listening to the radio / Audición de la radio
Select“FMST”,“FM”or“AM”
Seleccione “FM ST”,
“FM”o“AM”
Tune into the desired station.
Sintonizar la emisora deseada.
6 Sound control / Control del sonido
■Volume
■
Volumen
■Extra bass (X-BASS)
■
Graves extra (X-BASS)
■Pre-programmed equalizer
■
Ecualizador preprogramado
■Surround
■
Sonido difuso
X-BASS
X-BASS
SURROUND
SURROUND
FLAT
VOCALSOFT
HEAVY
POWER
CD
7 Recording from a CD onto a MiniDisc (One-Touch Editing) /
Grabación de un disco CD a un minidisco (edición de un accionamiento)
1
2
3
5
Load a compact disc and a
recordable MiniDisc.
Inserte un disco compacto y un
minidisco grabable.
8 Recording from the built-in radio onto MiniDisc /
Grabación desde la radio incorporada a un minidisco
To stop recording
Para detener la grabación
To stop recording
Para detener la grabación
3
REC
1
Tune into the desired station.
Sintonice la emisora deseada.
TUNER
2
Load a recordable Minidisc.
Inserte un minidisco grabable.
4
CD MD EDIT
DISPLAY
4
Check the recordable time.
Compruebe el tiempo que puede grabarse.

– 11 –
MD-M3/M1
1 Top Cabinet 1. Screw ................ (A1) x4 11-1
2. Socket ............... (A2) x3
2 Side Panel (Right,Left) 1. Screw ................ (B1) x7 11-1
(Note 2)
3 Rear Panel 1. Screw ................ (C1) x4 11-1
4 Main PWB 1. Flat Wire............ (D1) x1 11-2
(Note 2) 2. Lead Wire.......... (D2) x1
3. Screw ................ (D3) x6
4. Socket(MD-M3) .... (D4) x3
4. Socket(MD-M1) .... (D4) x2
5. Flat Cable.......... (D5) x4
5 Power/Tuner PWB 1. Screw ................ (E1) x4 11-3
2. Socket ............... (E2) x1
3. Flat Cable.......... (E3) x1
6 MD Unit and Holder 1. Screw ................ (F1) x4 12-1
(Note 1,2) 2. Screw ................ (F2) x5
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
2. Nut..................... (K2) x1
3. Screw ................ (K3) x5
11 CD Mechanism 1. Screw ................ (L1) x3 12-3
Front Panel
(E3)x1
(E1)x1
ø3x10mm
(E1)x1
ø3x10mm
Power/Tuner
PWB
Lug
Power PWB
(E1)x1
ø3x10mm
(E1)x1
ø3x10mm
(E2)x1
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 ascrew of improper lengthis fit to theMD 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.
Figure 11-1
DISASSEMBLY
STEP REMOVAL PROCEDURE FIGURE
MAIN UNIT MD-M3/M1
MAIN UNIT
Cares after repairing
Aftercompletionofrepairofproductsetthefollowingshipping
mode to return.
1. Make sure that there is not a CD and MD disc in the tray.
PressandholdthePRESETEQUALIZERandSTOPbuttons,
andthenpressthe POWERbuttontoentertheTESTmode.
2.AftertheindicationofFINISHEDappears,unplugthepower
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.
Figure 11-2
Note 1: When removing or reinstalling the MD unit, avoid a
shortcircuit bybeingcareful nottoallow ittotouch the
PWB.(Replacement with the PWB installed)
Note 2: After removing the connector for the optical pickup
fromtheconnectorwraptheconductivealuminiumfoil
around the front end of connector so as to protect the
optical pickup from electrostatic damage.
Figure 11-3
(C1)x4
ø3x10mm (B1)x2
ø3x10mm
(B1)x3
ø3x10mm
(B1)x2
ø3x10mm
(A1)x1
ø3x10mm
(A1)x1
ø3x10mm
(A1)x2
ø3x10mm
(A2)x2
(A2)x1
CD
Mechanism
Front Panel
Top Cabinet
Rear Panel
Side Panel
(Right)
Side Panel
(Left)
(D3)x2
ø3x10mm
(D3)x2
ø3x10mm
(D5)x1 MD-M3 Only
(D5)x1
(D5)x2
(D4)x1
(D4)x1
(D4)x1
Main
PWB
Front Panel
(D3)x1
ø3x10mm
(D3)x1
ø3x10mm
(D1)x1
(D2)x1
Jack
PWB
Main
PWB
Lug

MD-M3/M1
– 12 –
Figure 12-1
Figure 12-3
Figure 12-2
1 Speaker 1. Net..................... (A1) x1 12-4
(Woofer/Tweeter) 2. Screw ................ (A2) x4
3. Cover Ring ........ (A3) x1
4. Screw ................ (A4) x4
5. Cover Ring ........ (A5) x1
6. Screw ................ (A6) x2
STEP REMOVAL PROCEDURE FIGURE
SPEAKER CP-M3
(A1) x1
Net
(A2) x4
ø4 x15mm
(A4) x4
ø4 x15mm
(A6) x2
ø4 x10mm
(A5) x1
(A3) x1
Woofer
Tweeter
Sheet
Figure 12-4
(F2)x1
ø3x10mm
(F1)x2
ø3x10mm
(F2)x4
ø3x12 mm
(G1)x4
ø4x8mm
(H1)x2
ø3x10mm
(F1)x2
ø3x10mm
Front Panel
MD Unit
MD Holder
Power PWB
(K3)x2
ø2.6x10mm
(J1)x1
ø2.6x10mm
(K3)x3
ø2.6x10mm
Front Panel
Jack PWB
Display PWB
Washer
Nut
(K2)x1
(K1)x1
(L1)x3
ø2.6x10mm
Top Cabinet
CD Mechanism
Figure 12-5
Screw Driver
Net
(A1) x1
(A2) x4
ø4 x12mm
Woofer
1 Speaker 1. Net..................... (A1) x1 12-5
2. Screw ................ (A2) x4
STEP REMOVAL PROCEDURE FIGURE
SPEAKER CP-M1

– 13 –
MD-M3/M1
REMOVING AND REINSTALLING THE MAIN PARTS
MD MECHANISM SECTION
FordetailsabouttheproceduretoremovetheMDmechanism
fromthemainunit,refertotheDisassemblyProcedure,Steps
1-6 in the main unit and also the MD section.
(Referring to p.11,12)
Caution:
Afterpullingouttheopticalpickupconnector,wrapthe
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,pushtherackgear inthe arrowdirectiontomovethe
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.
How to remove the mechanism switch PWB
(See Fig. 13-3)
1.Removethescrews(C1)x2pcs.,andremovethemechanism
switch PWB.
Figure 13-1
Figure 13-2
Figure 13-3
(A1)x1
ø1.7x5mm
Magnetic Head
MD Mechanism
(B1) x1
ø1.7x5mm
Slider Lever
Roller Arm Lever
Clamp Lever Loading
Motor
Rack Gear
Cam Plate Lever
Cartrdge Holder
(B2) x1
(C1)x1
ø1.7x3mm
(C1)x1
ø1.7x9.5mm
Mechanism Switch PWB

MD-M3/M1
– 14 –
Figure 14-2
Figure 14-3
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.
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.)
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.)
Figure 14-1
(D1)x2
ø1.7x2mm
Loading Motor Sled Motor
(D1)x2
ø1.7x2mm
(E1)x2
ø1.7x2.5mm
Spindle Motor
Turntable
(E2)x1
ø1.7x2.1mm
(F1)x3
ø1.7x9.5mm Optical Picup

– 15 –
MD-M3/M1
Stop
Memory
Memory
CLV ON
Manual play
CD MECHANISM SECTION
FordetailsabouttheproceduretoremovetheCDmechanism
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)x1pc., to removethegear(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. Figure 15-1
Optical Pickup
( A2 ) x2
ø2.6 x6mm
( A1 ) x4
CD Mechanism
CD Cover
Shaft
( A3 ) x1
Gear
( A5 ) x1
Stop Washer
( A4 ) x1
TEST MODE
CD test mode setting
CD SECTION
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
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.
Memory
Memory
Stop mode
Laser output ON
Focus search
Normal play
Play
PressthePOWERbuttonatanytimetocancelthetestmode.Theunitwillreturntothenormaloperationmodeinwhichthepower
to the unit is turned off.
Play
Play
Play
Play
Stop
Stop
Stop
Stop
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Entry

MD-M3/M1
– 16 –
MD SECTION
Entering the specific mode
Whenever the SURROUND button is pressed, the mode is changed.
AUTO pre-adjustment AUTO adjustment RESULT Pre-adjustment
EEPROM setting MANUAL adjustment MANUAL pre-adjustment
Test mode setting method
1. Holding down the MD FUNCTION button and FF( )button, press POWER button switch.
(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 C state, the
indication A is restored. To restore C again, press the
PRESET EQUALIZER button.)
B EJECT
C AUT YOBI
RESULT
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.
• 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
Preset No. Frequency
Table 16 Initial setting of memory
TUNER SECTION

– 17 –
MD-M3/M1
SO301
Electronic
voltmeter
Speaker
Terminal
UNIT
FM signal oscillator
Since this CD system incorporates the following automatic
adjustment functions, readjustment is not needed when
replacingthepickup.Therefore,differentPWBsandpickups
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)Gainadjustment(Thegainis compensatedinsidetheIC
sothat the loop gain at the gain crossover frequency will
be 0dB.)
* Focus gain adjustment
* Tracking gain adjustment
•Adjustment
Figure 17-4
CD SECTION
T
T
EFBL
FDO
TE
Stopped
CH1=500mV
DC 10:1 CH2=200mV DC 10:1 CH3=1V DC 10:1 500ms/div
(500ms/div)
NORM:20kS/s
1
2
3
=Record Length=
Smoothing : ON CH1 : 0.000V
CH2 : 0.000V Main : 100K Zoom : 2k Mode : SINGLE Type : EDGE CH1
Delay : 0.0ns
Hold off : 0.2us
CH3 : 0.00V
CH4 : 0.00V
BW : FULL
=Trigger==Filter= =Offset=
CH2
v/DIV
200mV
1999/04/05 20:26:47
GND
AM Loop Antenna
Loop Antenna
Electronic
voltmeter
IF : Speaker Terminal
Freqency cover: IC302,Pin 20
UNIT
FM signal oscillator
ADJUSTMENT
fL: Low-range frequency
fH: High-range frequency
• AM adjustment and confirmation
Figure 17-1 AM IF
TUNER SECTION
Adjusting item Adjusting object Adjusting
method
IF Adjust the indication of Set IF waveform
T351 set to 1,720 kHz. 450 kHz to maximum.
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
speaker terminal
to maximum.
AM signal oscillator Frequency 400 Hz, 30%, AM modulation
• FM mute level adjustment
Frequency Adjusting
object
Adjusting
method
98 MHz 25 dB VR351 Input: SO301
Output: Speaker
Terminal
FM signal oscillator Frequency 1 kHz, 40 kHz
Adjusting object
Figure 17-2 FM Mute Level
• 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.
T306
VR351
T351
IC302
POWER/TUNER PWB
IC303 T302
FE301
AM IF
AM Tracking
AM Band Coverge
FM Mute Lebel
20
SO301
Antenna Terminal
Figure 17-3 ADJUSTMENT POINT

MD-M3/M1
– 18 –
1. Preparation for adjustment Test disc
MD SECTION
Type Test disc Part No.
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
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.
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
Part No.
PICK replacement
HEAD replacement
MECHANISM
replacement
MAIN PWB
assembly replacement
MD microcomputer
replacement
MD LSI replacement
RF IC replacement
EEPROM IC
replacement
TEMP
basic setting
TEMP
Execution item
required
Repair
operations
number , , , , and
" – " is an item that you don't have to execute.
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.
OK_EEPROM: "SET" and "YOBI COMPLETE" were written normally
WR_EEPROM:
NG_EEPROM: "SET" could not be written.
indicate the order of inplementation.
Checking
EEPROM setting
EEPROM_SET
AUTO-YOBI
adjustment
AUTO–YOBI
Writing the
EEPROM setting
TEST-PLAY
Operation check
TEST-REC
Check the connection between the MD microcomputer
and the EEPROM.

– 19 –
MD-M3/M1
0
NUL
00h
01h
BLANK
BLANK
02h
BLANK
03h
BLANK
04h
BLANK
05h
BLANK
06h
BLANK
07h
BLANK
08h
BLANK
09h
BLANK
0Ah
BLANK
0Bh
BLANK
0Ch
BLANK
0Dh
BLANK
0Eh
BLANK
0Fh
BLANK
SOH
STX
ETX
EOT
ENQ
ACK
BEL
BS
HT
LF
VT
FF
CR
SO
SI
DEL
10h
11h
BLANK BLANK
BLANK
12h
BLANK
13h
BLANK
14h
BLANK
15h
BLANK
16h
BLANK
17h
BLANK
18h
BLANK
19h
BLANK
1Ah
BLANK BLANK
1Bh
BLANK BLANK BLANK BLANK
1Ch
BLANK BLANK BLANK
1Dh
BLANK BLANK BLANK
1Eh
BLANK BLANK
1Fh
BLANK BLANK
DC1
DC2
DC3
DC4
NAK
SYN
ETB
CAN
EM
SUB
ESC
FS
GS
RS
US
0
30h
31h
32h
33h
34h
35h
36h
37h
38h
39h
3Ah
3Bh
3Ch
3Dh
3Eh
3Fh
1
2
3
4
5
6
7
8
9
:
;
<
=
>
?
@
40h
41h
42h
43h
44h
45h
46h
47h
48h
49h
4Ah
4Bh
4Ch
4Dh
4Eh
4Fh
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
^
_
P
50h
51h
52h
53h
54h
55h
56h
57h
58h
59h
5Ah
5Bh
5Ch
5Dh
5Eh
5Fh
Q
R
S
T
U
V
W
X
Y
Z
n
o
`
60h
61h
62h
63h
64h
65h
66h
67h
68h
69h
6Ah
6Bh
6Ch
6Dh
6Eh
6Fh
a
b
c
d
e
f
g
h
i
j
k
l
m
p
70h
71h
72h
73h
74h
75h
76h
77h
78h
79h
7Ah
7Bh
7Ch
7Dh
7Eh
7Fh
q
r
s
t
u
v
w
x
y
z
SP
20h
21h
22h
23h
24h
25h
26h
27h
28h
29h
2Ah
2Bh
2Ch
2Dh
2Eh
2Fh
!
”
#
$
%
&
’
(
)
*
+
,
.
/
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
14
15
12
13
10
11
12 3
Above rank 4 bit HEX data
Below rank 4 bit HEX data
4567
_
Table 19 Character Table for MD Test Mode
• Test Mode
1. EJECT mode • TEMP setting (of EEPROM setting)
• CONTROL setting (of EEPROM setting)
• Setting of laser power (record/playback power)
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.
• C1 error rate measurement, ADIP error rate measurement.
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.

MD-M3/M1
– 20 –
3. AUTO adjustment mode
Step No. Setting Method Remarks Display *
Step 1 Test mode STOP state The AUTO preliminary adjustment should have been completed. [ t s m 1 3 e ]
Step 2 Press the EQUALIZER button two times. AUTO adjustment menu [ A U T O _ A J S T _ ]
Step 3 Press the PLAY button. 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
End of adjustment If adjustment is OK, Step 4.
If adjustment is NG, Step 7.
Step 4 Adjustment value output For grating adjustment [ _ C O M P L E T E _ ]
Press the PLAY button. STEP 5
Press the STOP button. STEP 2 AUTO adjustment
Step 5 Continuous playback (pit section) Confirmation of CI error [ s c ]
Continuous playback (groove section) [ a c ]
Step 6 Press the DISPLAY button. Conformation of ADP error [ a a ]
Press the STOP button. STEP 2 AUTO adjustment menu
Step 7 Adjustment value output [ C a n ' t _ A D J . ]
Press the STOP button. STEP 2 AUTO adjustment menu
• : Adjustment name, : Measurement value, : Address
1. EJECT mode
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
Step No. Setting Method Remarks Display *
2. AUTO pre-adjustment mode (Low reflection disc only)
Step No. Setting Method Display *
Step 1 Test mode STOP state [ t s m 1 3 e ]
Step 2 Press once the EQUALIZER button. AUTO pre-adjustment menu [ _ A U T _ Y O B I _ ]
Step 3 Press the PLAY button. • During automatic adjustment changes as follows. [ : _ _ _ _ _ _ ]
HAo→ • • • • • • • • •→LAO
End of adjustment If adjustment is OK, Step 4.
If adjustment is NG, Step 5.
Step 4 Grating adjustment, [ _ C O M P L E T E _ ]
adjustment value output
Press once the STOP button. STEP 2 AUTO pre-adjustment menu
Step 5 Adjustment value output [ C a n ' t _ A D J . ]
Press once the STOP button. STEP 2 AUTO pre-adjustment menu
• : Adjustment name
Remarks
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.
With the pre-adjustment disc (MMD-318)
* Actual indicator character is shown on page 19 . ( See Table 19 )
* Actual indicator character is shown on page 19 . ( See Table 19 )
* Actual indicator character is shown on page 19 . ( See Table 19 )