(MD-MX30W only)
MD-MX30/MX30W
SERVICE MANUAL
No.S4025MDMX30//
MD-MX30
MD-MX30 MD Compact Component System
consisting of MD-MX30(main unit) and CPMX30(speaker system).
MD-MX30W
MD-MX30W MD Compact Component System
consisting of MD-MX30W(main unit) and CPMX30W(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.
CONTENTS
Page
SAFETY PRECAUTION FOR SERVICE MANUAL (FOR MD-MX30W)............................................................................ 2
IMPORTANT SERVICE NOTES (FOR U.S.A. ONLY)....................................................................................................... 3
VOLTAGE SELECTION (FOR MD-MX30W) ..................................................................................................................... 3
SPECIFICATIONS (FOR MD-MX30) ................................................................................................................................. 4
SPECIFICATIONS (FOR MD-MX30W).............................................................................................................................. 5
NAMES OF PARTS ........................................................................................................................................................... 6
OPERATION MANUAL ...................................................................................................................................................... 8
DISASSEMBLY................................................................................................................................................................ 10
REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 12
TEST MODE .................................................................................................................................................................... 15
ADJUSTMENT ................................................................................................................................................................. 20
EEPROM WRITING PROCEDURE ................................................................................................................................. 28
EXPLANATION OF ERROR DISPLAY............................................................................................................................ 30
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 31
TYPE OF TRANSISTOR AND LED ................................................................................................................................. 31
BLOCK DIAGRAM ........................................................................................................................................................... 32
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 37
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 65
WAVEFORMS OF MD CIRCUIT ..................................................................................................................................... 66
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 68
TROUBLESHOOTING (MD SECTION) ........................................................................................................................... 72
FUNCTION TABLE OF IC................................................................................................................................................ 76
REPLACEMENT PARTS LIST/EXPLODED VIEW/PACKING OF THE SET (FOR U.S.A.)
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-MX30/MX30W
SAFETY PRECAUTION FOR SERVICE MANUAL(For MD-MX30W)
WARNINGS (CD)
THE AEL (ACCESSIBLE EMISSION LEVEL) OF THE LASER POWER
OUTPUT IS LESS THAN CLASS 1 BUT THE LASER COMPONENT
IS CAPABLE OF EMITTING RADIATION EXCEEDING THE LIMIT
FOR CLASS 1. THEREFORE IT IS IMPORTANT THAT THE
FOLLOWING PRECAUTIONS ARE OBSERVED DURING
SERVICING TO PROTECT YOUR EYES AGAINST EXPOSURE TO
THE LASER BEAM.
1-WHEN THE CABINET IS REMOVED, THE POWER IS TURNED
ON WITHOUT A COMPACT DISC IN POSITION AND THE PICKUP
IS ON THE OUTER EDGE THE LASER WILL LIGHT FOR
SEVERAL SECONDS TO DETECT A DISC. DO NOT LOOK INTO
THE PICKUP LENS.
2-THE LASER POWER OUTPUT OF THE PICKUP UNIT AND
REPLACEMENT SERVICE PARTS ARE ALL FACTORY PRESET BEFORE SHIPMENT.
DO NOT ATTEMPT TO RE-ADJUST THE LASER PICKUP UNIT
DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICKUP LENS
AT ANY TIME.
4-CAUTION-USE OF CONTROLS OR ADJUSTMENTS, OR
PERFORMANCE OF PROCEDURES OTHER THAN THOSE
SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION
EXPOSURE.
CAUTION
WARNINGS (MD)
The AEL (ACCESSIBLE EMISSION LEVEL) of the laser power
output is less than class 1 but the laser component is capable
of emitting radiation exceeding the limit for class 1. Therefore it is
important that the following precautions are observer during
servicing to protect your eyes against exposure to the laser beam.
1) When the unit case cover is removed and LOADING SW (SW
1956) is turned on and then PLAY SW (SW 1954 mechanism
PWB) is turned on in a few second.
The laser will light for several second to detect a disk.
2) The laser power output of the pickup unit and replacement service
parts are all factory pre-set before shipment.
Do not attempt to re-adjust the laser pickup unit during replacement
or servicing.
3) Under no circumstances stare into the pickup lens at any time.
4) If laser optical unit becomes faulty, replace the complete laser
optical unit.
5) CAUTION-USE of controls or adjustments, or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
Laser Diode Properties
Material: GaAlAs
Wavelength: 780 nm
Emission Duration: continuous
Laser Output: max. 0.6 mW
● This MD Compact Component System is classified as a CLASS 1 LASER product.
● The CLASS 1 LASER PRODUCT label is located on the rear cover.
●
Use the MD Compact Component System only in
accordance with the instructions given in this
manual and do not attempt to interfere with the
interlock switch or make any other adjustment as
this may result in exposure to hazardous radiation.
Laser Diode Properties
● Material: GaAlAs
● Wavelength:785 nm
● Pulse time:
Read mode: 0.8 mW Continuous
Write mode: max. 10 mW 0.5S
min. cycle 1.5S
Repetition
CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS DEFEATED
AVOID EXPOSURE TO BEAM .
VARNING - OSYNLIG LASERSTR LNING N R DENNA DEL R …PPNAD OCH SP RRAR
R URKOPPLADE. STR LEN R FARLIG.
ADVARSEL - USYNLIG LASERSTR LING N R DEKSEL PNES OG SIKKERHEDSL S
BRYTES. UNNG EKSPONERING FOR STR LEN.
VARO! AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA
N KYM T…N LASERS TEILYLLE. L KATSO S TEESEN.
VARNING - OSYNLIG LASERSTR LING N R DENNA DEL R …PPNAD OCH SP RREN
R URKOPPLAD. BETRAKTA EJ STR LEN.
ADVARSEL - USYNLIG LASERSTR LING VED BNING N R SIKKERHEDSAFBRYDERE
ER UDE AF FUNKTION. UNDG UDSETTELSE FOR STR LING.
CAUTION-INVISIBLE LASER RADIATION WHEN OPEN. DO NOT STARE INTO BEAM
OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA EJ
IN I STRALEN OCH BETRAKTA EJ STRALEN MED OPTISKA INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING VED ABNING. SE IKKE IND I
STRALEN-HELLER IKKE MED OPTISKE INSTRUMENTER.
VARO! AVATTAESSA OLET ALTTIINA NAKYMATON LASERSATEILYLLE. ALA
TUIJOTA SATEESEEN ALAKA KATSO SITA OPTISEN LAITTEEN LAPI.
VARNING-OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD. STIRRA EJ
IN I STRALEN OCH BETRAKTA EJ STRALEN GENOM OPTISKT INSTRUMENT.
ADVERSEL-USYNLIG LASERSTRALING NAR DEKSEL APNES. STIRR IKKE INN I
STRALEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.
– 2 –
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
TEST PROBE
0.15 µ F
1.5k ohms
10W
VTVM
AC SCALE
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.
MD-MX30/MX30W
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.
VOLTAGE SELECTION(For MD-MX30W)
The voltage selector is located on the AC voltage selector box. If adjustment is necessary, ensure to remove plug of AC cord from
AC socket and use a screwdriver in order to turn the selector in either direction. The correct voltage figure is displayed in the window
below to the adjustment screw.
QACCB0008AW00
QACCE0007AW00 QACCL0002AW00
QACCJ0006AW00
QACCA0004AW00
Figure 3 POWER SUPPLY CORD
– 3 –
MD-MX30/MX30W
SPECIFICA TIONS (For MD-MX30)
● General
Power source: AC 120 V, 60 Hz
Power
consumption: 73W
Dimensions: Width; 8-1/2" (215 mm)
Height; 6-7/16" (162 mm)
Depth; 13-1/2" (342 mm)
Weight: 10.4 Ibs. (4.7 kg)
● Amplifier section
Output power: FTC 20 watts per channel minimum
RMS into 6 ohms from 60 Hz to 20 kHz
with no more than 10 % total harmonic
distortion
Output terminals: Speaker; 6 ohms
Headphones; 16 - 50 ohms
(recommended 32 ohms)
Input terminals: Auxiliary; 500 mV/47 k ohms
● MiniDisc recorder section
Type: MiniDisc recorder
Signal readout: Non-contact, 3-beam semiconductor
laser pickup
Rotation speed: 400 - 900 rpm CLV, Approx.
Error correction: ACIRC (Advanced Cross Interleave 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: Drawer type compact disc player
Signal readout: Non-contact, 3-beam semiconductor
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 unbalanced)
AM; 650 µV/m
● Speaker section
Type: 2-way speaker system
[4-3/4" (12 cm) woofer and
3/4" (2 cm) tweeter]
Maximum input
power: 50 W
Rated input
power: 25 W
Impedance: 6 ohms
Dimensions: Width; 6-5/16" (160 mm)
Height; 11-1/16" (280 mm)
Depth; 9-1/4" (233.5 mm)
Weight: 7.1 Ibs. (3.2 kg)/each
Specifications for this model are subject to change without
prior notice.
– 4 –
SPECIFICATIONS (For MD-MX30W)
MD-MX30/MX30W
● General
Power source: AC 110/127/220/230-240 V, 50/60 Hz
Power
consumption: 70 W
Dimensions: Width; 215 mm (8-1/2")
Height; 162 mm (6-7/16")
Depth; 342 mm (13-1/2")
Weight: 5 kg (11.0 lbs.)
● Amplifier section
Output power: PMPO; 400 W (Total)
MPO; 96 W (48 W+48 W) (10% T.H.D.)
RMS; 50 W (25 W+25 W) (10% T.H.D.)
Output terminals: Speaker; 6 ohms
Headphones; 16 - 50 ohms
(recommended 32 ohms)
Input terminals: Auxiliary; 500 mV/47 k ohms
● MiniDisc recorder section
Type: MiniDisc recorder
Signal readout: Non-contact, 3-beam semiconductor laser pickup
Rotation speed: 400 - 900 rpm CLV, Approx
Error correction: ACIRC (Advanced Cross Interleave 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: Drawer type compact disc player
Signal readout: Non-contact, 3-beam semiconductor 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; 88 - 108.0 MHz
AM; 531 - 1,602 kHz
Sensitivity: FM; 2.5 µV (75 ohms unbalanced)
AM; 650 µV/m
● Speaker section
Type: 2-way speaker system
[12 cm (4-3/4") woofer and
2 cm (3/4") tweeter]
Maximum input
power: 50 W
Rated input
power: 25 W
Impedance: 6 ohms
Dimensions: Width; 160 mm (6-5/16")
Height; 280 mm (11-1/16")
Depth; 233.5 mm (9-1/4")
Weight: 3.2 kg (7.1 lbs.)/each
Specifications for this model are subject to change without
prior notice.
– 5 –
MD-MX30/MX30W
■ Front panel
1. On/Stand-by Button
2. Timer Stand-by Indicator
3. Name/TOC Edit Button
4. Timer/Delete Button
5. Tuning Down/Review Button
6. MD Stop Button
7. MD Play/Pause Button
8. Tuning Up/Cue Button
9. Display (Demo) Button
10. MD Compartment
11. MD Eject Button
12. Jog Dial
13. Memory/Enter Button
14. CD Compartment
15. Record Button
16. CD
17. CD
18. CD Open/Close Button
19. CD Stop Button
20. CD Play/Pause Button
21. Headphone Socket
22. Surround Button
23. Preset Equalizer Button
24. Extra Bass Button
25. Tuner (Band) Button
26. Auxiliary Button
27. Volume Control
28. Volume Select Button
MD Normal Speed Edit Button
MD High Speed Edit Button
NAMES OF PARTS
910 131211
14 15
2423
234 56781
16 17 18 1920
25
262221 28
27
■ Rear panel(For MD-MX30)
1. FM 75 Ohms Antenna Terminal
2. Antenna Ground Terminal
3. AM Loop Antenna Terminal
4. Auxiliary Input Jacks
5. Speaker Terminals
6. AC Power Input Jack
■ Rear panel(For MD-MX30W)
1. FM 75 Ohms Aerial Terminal
2. Aerial Earth Terminal
3. AM Loop Aerial Terminal
4. Auxiliary Input Sockets
5. Span Selector Switch
6. Speaker Terminals
7. AC Power Input Socket
8. AC Voltage Selector
MD-MX30
MD-MX30W
2
3 4
6
3 4 5
51 2
61
– 6 –
7
8
Display window
1. FM Stereo Indicator
2. FM Stereo Mode Indicator
3. Track Edit Indicator
4. Play/Pause Indicator
5. Repeat Indicator
6. TOC Indicator
7. Level Meters
8. Digital Recording Indicator
9. CD Indicator
10. High Speed Edit Indicator
11. MD Indicator
12. Record Indicator
13. Sleep Indicator
14. Disc Indicator
15. Track Indicator
16. Memory Indicator
17. Random Play Indicator
18. Total Time Indicator
19. Remaining Time Indicator
20. Character Information Display
21. AM/PM Indicator
22. Timer Record/Timer Play Indicator
23. Surround Indicator
24. Extra Bass Indicator
13
14
15
16
17
18
MD-MX30/MX30W
2 3 4 56 7 9 1011112
8
19 20 212223 24
Remote contorol
1. Remote Control Transmitter LED
2. Preset Equalizer Button
3. Surround Button
4. Clock Button
5. Sleep Button
6. Memory/Enter Button
7. MD Stop Button
8. MD Play/Pause Button
9. MD Track Down/Review Button
10. MD Track Up/Cue Button
11. Track Edit Button
12. Record Button
13. On/Stand-by Button
14. Dimmer Button
15. Tuner Preset Up/Down Buttons
16. Extra Bass Button
17. Volume Select Button
18. Display Button
19. Clear Button
20. Play Mode Button
21. Time Button
22. CD Play/Pause Button
23. CD Stop Button
24. CD Track Up/Cue Button
25. CD Track Down/Review Button
26. Tuner (Band) Button
27. Auxiliary Button
28. Volume Buttons
10
11
12
13
14
1
2
3
4
5
6
7
8
9
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Speaker section
1. Tweeter
2. Woofer
3. Bass Reflex Duct
4. Speaker Terminals
– 7 –
1
2
3
4
MD-MX30/MX30W
SETTING THE CLOCK
6
Adjust the hour by turning the jog dial.
● When the jog dial is turned one click clockwise,
the time will increase by 1 hour. When it is turned
one click anti-clockwise, the time will decrease
by 1 hour. Keep turning the jog dial to change
the time continuously.
● When the 12-hour display is selected, "AM" will
change to "PM" automatically.
7
Press the MEMORY/ENTER button.
8
Adjust the minutes by turning the jog dial.
● When the jog dial is turned one click clockwise,
the time will increase by 1 minute. When it is
turned one click anti-clockwise, the time will
decrease by 1 minute. Keep turning the jog dial
to change the time continuously.
● The hour setting will not advance even if min-
utes advance from "59" to "00".
9
Press the MEMORY/ENTER button.
● The clock starts operating from "0" second.
(Seconds are not displayed.)
To see the time display:
Press the CLOCK button.
● The time display will appear for about 5 seconds
even in the stand-by mode.
Note:
● The "CLOCK" will appear at the push of the
CLOCK button when the AC power supply is re-
stored after a power failure occurs or after the
AC power lead is disconnected.
If this happens, follow the procedure below to
change the clock time.
To change the clock time:
1
Press the CLOCK button.
2
Within 5 seconds, press the MEMORY/ENTER
button.3Perform steps 6 - 9 above.
To change the time display mode:
1
Reset the microcomputer.
2
Perform steps 2 - 9 above.
MEMORY/
ENTER
Jog dial
● In this example, the clock is set for the 24-hour
(0:00) system.
1
Press the ON/STAND-BY button to turn the
power on.
2
Press the CLOCK button.
3
Within 5 seconds, press the MEMORY/ENTER
button.
4
Turn the jog dial to select the time display mode.
"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 MEMORY/ENTER button.
ON/STAND-BY
CLOCK
RESETTING THE MICROCOMPUTER
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 ON/STAND-BY button to enter the
stand-by mode.
2
Press the ON/STAND-BY button whilst holding
down the SURROUND button and the
TIMER/DELETE button.
● "ALL CLEAR" will appear.
Caution:
● The operation explained above will erase all data
stored in memory including clock and timer
settings, and tuner, MiniDisc and CD presets.
2
1,2
2
■ 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 aerial is placed near the unit,
the picture on the TV screen may be
distorted or the radio may not func-
tion 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 aerial.
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.
OPERATION MANUAL
– 8 –
MD-MX30/MX30W
(Continued)
Symptom
● A recording cannot be made.
● Even though a disc has been
loaded, "NO DISC" or "CAN'T
READ" is displayed.
● Playback sounds are skipped.
Possible cause
● Is the MiniDisc protected against
accidental erasure?
● Did you try to make recording on a
playback-only MiniDisc?
● Can you see the "DISC FULL" or
"TOC FULL" message in the dis-
play?
● 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.
● 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.
MiniDisc recording and playback
Symptom
● Radios make unusual noise con-
secutively.
● The preset channel cannot be re-
called.
Possible cause
● The unit is placed near the TV or
computer.
● The aerial direction is not placed
properly.
● Did you erase the programmed sta-
tion?
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 happens,
move the unit from the place
where the noise is picked up.
● Correct the aerial direction.
● Preset the channel again.
● Redo programming.
Radio reception
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 lead plugged in?
Remedy
● Insert properly.
● Replace the batteries.
● Operate it within a range of 0.2
m (8") to 6 m (20') and within an
angle of 15 ° to either side of
centre.
● Connect the AC power lead.
Remote control
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, "NO DISC" is displayed.
● Playback stops in the middle of a
track, or playback is not performed
properly.
● Playback sounds are skipped.
When an error message is displayed, proceed as follows:
ERROR MESSAGES
Error messages
BLANK MD
CAN'T COPY
CAN'T READ
( :Number or
symbol)
CAN'T EDIT
CAN'T REC
CAN'T WRITE
DISC FULL
E-CD 20
E. OVER
EDIT OVER
Er-MD
( :Number or
symbol)
NAME FULL
NO DISC
NOT AUDIO
PLAY MD
PROTECTED
TEMP OVER
TOC FORM
(
:Number or
symbol)
TOC FULL
TOC FULL 1
? DISC
Remedy
● Replace it with another disc.
● Replace the CD.
● Replace it with another disc.
● Erase the disc and try recording again.
● Change the stop position of the track
and then try editing it.
● Re-record or replace the MiniDisc.
● Set this unit to the stand-by mode and
try to write the TOC again. (Remove
any source of shock or vibration whilst
writing.)
● Replace the disc with another record-
able disc.
● Set this unit to the stand-by mode and
turn the power on again.
● Decrease the number of tracks.
● Replace it with a disc that has enough
time to record.
● Set this unit to the stand-by mode and
turn the power on again.
● Shorten the disc or track name.
● Load a MiniDisc.
● Reload the MiniDisc.
● Load a CD.
● Reload the CD.
● Select another track.
● Replace the disc.
● Replace it with another recordable
disc.
● Move the write protection tab back to
its original position.
● Set this unit to the stand-by mode and
wait for a while.
● Replace it with another disc.
● Erase the disc and try recording again.
● Replace it with another recordable
disc.
● Replace it with another recordable
disc.
● Erase the needless characters.
● Replace it with another disc.
Meaning
● Nothing is recorded.
(Neither music nor disc name is re-
corded.)
● You tried to record from a copy prohib-
ited CD.
● The disc is damaged.
● TOC information cannot be read.
● MiniDisc not specified.
● A track cannot be edited.
● Recording cannot be performed cor-
rectly due to vibration or shock in the
unit.
● The TOC information could not be cre-
ated properly due to a mechanical
shock or to scratches on the disc.
● The disc is out of recording space.
● The CD tray is not working properly.
● You chose 21 or more tracks for track
editing.
● There is no space to make CD editing
on the disc.
● A MiniDisc is not working properly.
● The number of characters for the disc
name or track name exceeds 40.
● A MiniDisc has not been loaded.
● The MiniDisc data cannot be read.
● A CD has not been loaded.
● The CD data cannot be read.
● 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 temperature is too high.
● TOC information recorded on the MD
does not match the MiniDisc specifi-
cations or it cannot be read.
● There is no space left for recording
track numbers.
● There is no space left for recording
character information.
● The data contains an error.
● MiniDisc not specified.
– 9 –
MD-MX30/MX30W
RV59
DISASSEMBLY
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
STEP REMOVAL
1 Top Cabinet 1. Screw ................ (A1) x7 10-2
2 Side Panel
(Right,Left)
3 Rear Panel 1. Socket ............... (C1) x1 10-3
4 Main PWB 1. Screw ................ (D1) x9 11-1
(Note 1) 2. Flat Cable.......... (D2) x4
5 Tuner PWB 1. Screw ................ (E1) x4 11-1
6 Power PWBx2 1. Socket ............... (F1) x1 11-2
7 MD/CD Holder 1. Screw ................ (G1) x8 11-3
8 Front Panel 1. Screw ................ (H1) x4 11-4
9 Volume PWB 1. Knob.................. (J1) x1 11-5
10 Display PWB 1. Knob .................. (K1) x1 11-5
11 CD Servo PWB 1. Socket ............... (L1) x5 11-6
(Note 1) 2. Lug .................... (L2) x1
12 MD Holder 1. Screw ................ (M1) x3 11-6
(MD Unit) 2. Screw ................ (M2) x4
13 CD Mechanism 1. Screw ................ (N1) x3 11-7
14 MD Mechanism 1. Screw ................ (P1) x8 12-1
(Note 1) 2. Flat Cable.......... (P2) x3
PROCEDURE
FIGURE
1. Screw ................ (B1) x8 10-2
2. Screw ................ (C2) x6
3. Socket ............... (D3) x3
2. Screw ................ (F2) x9
2. Flat Cable.......... (G2) x1
2. Screw ................ (J2) x3
3.Nut...................... (J3) x1
2. Nut ..................... (K2) x1
3. Screw ................ (K3) x8
3. Screw ................ (L3) x3
3. Flexible PWB .... (P3) x1
4. Socket ............... (P1) x2
Notes for servicing (For MD-MX30 only)
• This model is equipped with a fan. If you remove the fan to
service the unit, it enters the protection mode and the
power cannot be turned on by pressing the POWER
button. In such a case, follow the procedure below.
(Refer to Fig.10-1.)
1. Check whether a resistor (RV 66,39ohm,1/2W) is inserted.If
not, connect it (39ohm,1/2W).
2. Connect the patterns circled with a dotted line by soldering.
• Desolder to reassemble the unit after repairing. If you fail
to desolder, the power turns off soon because the unit
enters the protection mode when the fan rotates at a high
speed (high power).
• These steps are unnecessary to service the unit with the
fan connected.
RV17
CV56
02
345
MAIN PWB-A1
SV02
11 - G,H
PLAY PWB
BCE
RV19
CV15
RV20
RV53
RV21
DV03
QV51
DV05
DV06
RV09
CV13
RV11
RV07
CV09
CNPV01
21
RV15
3
2
1
1
CNSV01
CV05
RV03
CV62
1
2
RV66
RV51
RV05
2
RD
MV01
FAN MOTOR
CV53
RV50
LUGV01
CHASSIS
GND
CV59
CV07
Figure 10-1
MAIN UNIT
(A1) x2
Illustration: MD-MX30
Cabinet
ø3 x12mm
(B1) x2
ø3 x12mm
(B1) x2
ø3 x12mm
Side
Panel(R)
(A1) x3
ø3 x12mm
(B1) x2
ø3 x12mm
Side Panel(L)
Figure 10-2
RV01
CV01
B
QV54
C
E
CV58
BIV01
CV61
(A1) x2
ø3 x12mm
(B1) x2
ø3 x12mm
RV60
Note 1:
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.
(C1) x1
(C2) x6
ø3 x10mm
Rear Panel
Figure 10-3
– 10 –
MD-MX30/MX30W
MAIN PWB
(D2) x2
(D2) x1
DISPLAY PWB
(D3) x1
(E1) x2
ø3 x10mm
(D2) x1
(E1) x2
ø3 x10mm
Figure 11-1
(F2) x2
ø3 x10mm
(D1) x4
ø3 x10mm
TUNER PWB
(D1) x1
ø2.6 x10mm
Lug
(D1) x2
ø3 x10mm
HOLDER PWB
Lug(MD-MX30 Only)
(D3) x1
(F2) x4
ø4 x8mm
(D3) x1
(D1) x1
ø3 x10mm
(D1) x1
ø3 x10mm
DISPLAY PWB
VOLUME PWB
(J2) x3
ø3 x12mm
(M1) x1
(M2) x2
ø3 x6mm
ø2.6 x10mm
(J3) x1
Washer
Volume Holder
Figure 11-5
Washer
(K2) x1
(K3) x8
ø2.6 x10mm
(L2) x1
(K1) x1
(J1) x1
(F2) x1
ø3 x10mm
(G2) x1
HOLDER PWB
POWER PWB
Figure 11-2
(G1) x1
ø3 x10mm
CD SERVO PWB
Figure 11-3
(F2) x2
ø3 x10mm
(G1) x4
ø3 x10mm
(G1) x1
ø3 x10mm
Front Panel
(F1) x1
(G1) x2
ø3 x10mm
MD/CD Holder
MD Holder
CD Roading
Chassis
CD Roading
Chassis
(L1) x1
(M2) x2
ø3 x6mm
Figure 11-6
MD UNIT
(M1) x2
ø2.6 x10mm
(N1)x3
ø2.6 x10mm
(L1) x2
CD SERVO PWB
(L3) x3
ø3 x10mm
(L1) x2
(H1) x3
ø3 x10mm
Figure 11-4
Lug
(H1) x1
ø3 x10mm
CD Mechanism
Figure 11-7
– 11 –
MD-MX30/MX30W
(P1)x1
ø2x 3mm
Shield Case,Top
(P1)x1
ø2x 3mm
SPEAKER
STEP REMOVAL
1 Net Frame 1. Net..................... (A1) x1 12-2
Woofer 2. Screw ................ (A2) x4 12-3
Tweeter 3. Screw ................ (A3) x6
PROCEDURE
FIGURE
Pull
Optical pickup
Flexible PWB
(Note 1)
MD MECHANISM
Shield Case,Side
(P2)x2
Pull
(P3)x1
MD MAIN PWB
(P4)x1
(P1)x1
ø2x 3mm
(P1)x1
ø2x 3mm
(P2)x1
(P4)x1
(P1)x2
ø1.7x 3mm
(P1)x1
ø2x 3mm
(A3) x4
ø4 x20mm
(A1) x1
Figure 12-2
Tweeter
Cusion Seet
(A3) x2
ø4 x10mm
(P1)x1
(Note 1) After removing the flexible PWB for optical pickup
from the connector wrap the front end of flexible PWB in
conductive aluminum foil so as to protect the optical pickup
from being damaged electrostatically.
ø2x 2mm
Shield Case,Bottom
Figure 12-1
REMOVING AND REINSTALLING THE MAIN PARTS
MD MECHANISM SECTION
For details about the procedure to remove the MD mechanism
from the main unit, refer to the Disassembly Procedure, Steps
1-4,12 and 14 in the main unit and also the MD section.
(Referring to p.10-12)
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. 12-4)
1. Remove the screws (A1) x 1 pc.
(A2) x4
ø4 x20mm
Magnetic Head
MD Mechanism
Woofer
Figure 12-3
(A1)x1
ø1.7x 5mm
Caution:
Take utmost care so that the magnetic head is not damaged
when it is mounted.
Figure 12-4
– 12 –
How to remove the MD loading PWB/loadeing
(B3)x2
ø1.7x 3mm
(B1)x1
ø1.7x 6mm
(B2)x2
(B2)x1
Loading Motor
Loading Motor PWB
motor
(See Fig. 13-1)
1. Remove the screw (B1) x 1 pc.
2. Remove the Hoock (B2) x 3 pcs., and remove the MD
Loading PWB.
3. Remove the screw (B3) x 2 pcs., and remove the Loading
motor.
How to remove the sled motor/optical pickup
(See Fig. 13-2)
1. Remove the screws (C1) x 3 pcs., and remove the sled
motor.
2. Remove the optical pickup.
Optical Pickup
MD-MX30/MX30W
Figure 13-1
(C1)x1
ø1.4x 5mm
(C1)x2
ø1.4x 4.5mm
Washer
Caution:
How to remove the spindle motor
(See Fig. 13-3)
1. Remove the screws (D1) x 3 pcs., and remove the spindle
Caution:
Be careful so that the gear is not damaged.
(The damaged gear emits noise during searching.)
motor.
Be careful so that the gear is not damaged.
(The damaged gear emits noise during searching.)
(D1)x3
ø1.4x 3mm
Sled Motor
Mechanism Switch PWB
Figure 13-2
Spindle Motor
Figure 13-3
– 13 –
MD-MX30/MX30W
CD MECHANISM SECTION
For details about the procedure to remove the CD mechanism
from the main unit, refer to Disassembly Procedure, Steps 14 ,7 and 11-13 in the main unit and also the CD section.
(p.10,11).
How to remove the optical pickup
(See Fig. 14-1.)
1. Remove the screws (A1)x 2 pcs., to remove shaft (A2)x 1
pc.
2. Remove the stop washer (A3)x 1 pc., to remove the gear
(A4)x 1 pc.
3. 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.
How to remove the CD loading motor
(See Fig. 14-2.)
1. Remove the belt (B1)x 1 pc.
2. Remove the screws (B2)x 2 pcs.,and remove the Loading
motor.
Optical Pickup
Shaft
( A2 ) x1
Belt
(B1) x 1
( A1 ) x2
ø2.6 x 6 mm
CD Mechanism
Stop Washer
( A3 ) x1
Gear
( A4 ) x1
Figure 14-1
(B2) x 2
ø2 x 4mm
CD Unit
CD Roading Motor
How to remove the disc tray
(See Fig. 14-3/4 .)
1. Rotate the disc tray gear in the direction of the arrow (1). Pull
out the disc tray as shown by the arrow (2).
2. Press the right and left claws as shown by the arrow (3) to
remove the disc tray.
Figure 14-2
Disc Tray Gear
1
2
Figure 14-3
claws
3
3
Figure 14-4
– 14 –
MD-MX30/MX30W
TEST MODE
Press specified buttons simultaneously to enter the following test modes.
System section
TEST 1: Factory setting (version number and destination)
TEST 2: Soft reset
MD section
TEST 3: MD test 1 (adjustment, test, etc.)
CD section
TEST 4: CD test
Tuner section
TEST 5: Tuner test frequency preset
TEST 6: Tuner preset clear
Entering the test mode
While holding down the following 2 buttons, press the ON/STAND-BY button to enter each test mode.
Level meter
"Center Bar"
–
–
Flashing
Flashing
–
–
Setting the unit to default.
Reinitializing the unit.
Setting MD microcomputer to test mode
Testing CD mechanism, hard
Presetting test frequency
Clearing all preset settings
Table 15-1 Test mode entry
[SURROUND]
[SURROUND]
[SURROUND]
[X-BASS]
[TUNER]
[TUNER]
[ENTER]
[DELETE]
[MD-PLAY]
[>>]
[MD-PLAY]
[MD-STOP]
TEST1
TEST2
TEST3
TEST4
TEST5
TEST6
Name Description Button1 Button2
Factory setting
Soft reset
MD test 1
CD test
Tuner test
Frequency preset
Tuner preset clear
System section
TEST 1 Factory setting test mode
Object: Putting the unit in default state.
Function: Checking existence of CD and MD and reinitializing all functions.
Operation: The unit performs CD initial operation and checks existence of CD.
If a CD exists, "CD OPEN" appears and tray opens in CD mode then the unit enters the normal power-on state.
Ejecting MD
While disc existence check, program version and preset destination appear according to the display.
When disc existence check is completed, the unit reinitializes all settings and displays "FINISH" according to the display and
prohibits every button input including power supply operation.
Leaving the test mode
The unit returns to normal operation by connecting and disconnecting the power supply cord.
Item
Version and destination display
CD presence
Setting end
Destination is displayed by its name.
Type Remarks
Operation
Function
Sub-display
Character display
12345678:910
VH
CD OPEN
FINISH
Table 15-2 Character display
***
Number
– 15 –
:
Sub-display
MD-MX30/MX30W
TEST 2 Soft reset
Object: Reinitializing the unit.
Function: Reinitializing all functions.
Operation: "ALL CLEAR" appears and the unit reinitializes all functions and then turns power on.
Leaving the test mode
After reinitializing by soft reset, the unit enters the normal power-on state.
Item
Reset operation display
Type Remarks
Sub-display
Operation
12345678:910
ALCLLERA
Table 16-1 Character display
Character display
Sub-display
MD section
TEST 3 MD test 1
Object: Setting the MD unit to test mode.
Function: Setting the MD microcomputer to test mode, sending test commands which correspond to the button entry, and
displaying indication data from the microcomputer.
Operation: Power turns on and the mode is switched to MD by entering the test mode.
The test mode setting command is sent to the MD microcomputer to enter the test mode.
Button entries not in theTable 17 (page 17) are ignored.
10 characters data received from the MD microcomputer are displayed.
EJECT and LOADING are operated normally.
Disc can be loaded or unloaded forcibly by VOLUME up and down operations while MD microcomputer version is displayed
in disc chucking and while EJECT is displayed.
Leaving the test mode
Pressing the ON/STAND-BY button turns the power off normally.
No auto adjustment mode setting
While in this test mode, pressing the MEMORY/ENTER button switches the unit to the no auto adjustment operation mode
as follows.
The unit enters the no auto adjustment operation mode after the above. As normal operation, every button input is valid.
While this setting, "Center bar" should flash. The unit is in the test mode continuously.
Note:
In no auto adjustment operation mode, the mode is canceled by pressing the ON/STAND-BY button. When power turns on
again, normal power-on operation is performed.
– 16 –
MD-MX30/MX30W
Button to press
[UP]
[DOWN]
[VOLUME UP]
VOLUME DOWN
[
[MEMORY/ENTER]
]
Main unit
Remote control
Press Function
Once[ON/STAND-BY]
Once[EQUALIZER]
Once[X-BASS]
Once[CD-PLAY]
Once[CD-STOP]
Once
Continuously
Once
Continuously
–
–
Once[DISPLAY]
–
Power on and off. Turns the power off when POWER ON and on
when POWER OFF.
Sending test mode menus. To servo adjustment mode.
(Menus concerning adjustment and EEPROM.)
Sending test mode menus. To recording mode.
(Menus concerning continuous playback and continuous recording.)
Sending test mode menus. To other modes.
(INNER mode menu, JUMP SELECT menu, etc.)
Sending menus backward in each mode.
(Valid in each test mode.)
Menu selection and execution.Once[MD-PLAY]
Stopping each test item and returning to the previous selection menu.Once[MD-STOP]
1) Sled motor moving outward (FWD) and continuation.
2) JUMP.
3) Address value UP.
Others
1) Slide motor moving inward (REV) and continuation.
2) JUMP.
3) Address value DOWN.
Others
1) Forcibly disc unloading.
2) Adjustment value + 1.
1) Forcibly disc loading.
2) Adjustment value - 1.
1) Laser switching at "EJECT".
2) Display switching when continuous playback.
Others
To the no auto adjustment operation mode.Once
Normal loading.LOADING SW
Normal eject.Once[EJECT]
Table 17 Button entry table
Display in the MD test mode 1
"Center Bar" of the level meter flashes during this mode.
Lower-case characters appear according to the 10-letter data from the MD microcomputer.
When an MD disc is already loaded: "_AUT_YOBI_" appears.
The entry to this mode becomes steady when the indication appears as the AUTO YOBI mode Figure 17-1
"_AUTO_YOBI_" indication when entering MD test mode
Figure 17-1
– 17 –
MD-MX30/MX30W
When an MD is not loaded: "_EJECT_" appears.
Indication appears as shown in Figure 18-1 when a disc is not loaded.
When a disc is loaded, the MD microcomputer enters the AUTO YOBI mode. The received character data will be displayed
as Figure 17-1 (page 17).
"_EJECT_" indication when entering the MD test mode
Figure 18-1
Indication when moving to the normal power-off mode in the no auto adjustment mode.
When the MEMORY/ENTER button is pressed in this mode, the unit leaves this test mode and becomes normal power-on
state in the no auto adjustment mode.(This mode is used for technical consideration, not for service.)
After displaying "POWER ON", "MD DISC" (Figure 18-2) appears then the normal power-on indication appears.
"MD DISC" display
CD section
TEST 4 CD test mode
When focus is not correct in step 3 or when entering other
error correction modes, the unit cannot move to the next
step.
When the unit enters error correction mode, press the ON/
STAND-BY button to stop the test mode or the CD-STOP
button to return to step 1. Other operations are prohibited.
Press the ON/STAND-BY button in each step to cancel the
test mode and return to the normal POWER OFF.
Figure 18-2
CD-Stop
CD-Stop
CD-Stop
CD-Stop
CD test mode flow chart
Entry
Step1
Slide
Memory CD-Play
Step2
Laser output
Memory
Step3
Focus search
Memory
Step4
CLV
Memory
Step5
Manual playback
CD-Play
CD-Play
CD-Play
CD-Play
Step7
Overall test
Table 18
– 18 –
MD-MX30/MX30W
FM
12345678910
87.5MHz 108.0MHz 90.0MHz 106.0MHz 98.0MHz 531kHz 1602kHz 603kHz 1404kHz 990kHz
AM
FM
MD-MX30W
MD-MX30
12345678910
87.5MHz 108.0MHz 90.0MHz 106.0MHz 98.0MHz 530kHz 1720kHz 600kHz 1400kHz 990kHz
AM
Tuner section
Pressing the specified buttons performs the following 3 test operations.
The operations are performed when POWER ON. When they are completed, the unit enters the normal power-on operation
state.
TEST 5 Tuner test frequency preset
Object: Presetting the test frequency for factory test.
Function: Presetting bands and frequencies shown in the Table 19 to each preset number according to the destination
default.
Operation: The bands and frequencies shown in the table are preset by entering test mode and power turns on in the
following state.
Function: Tuner
Band: FM monaural
Tuning mode: Preset call tuning
Call preset number: Frequency of preset number 1
Each band last preset channel: Refer to Table 19
X-BASS: OFF
Preset equalizer: FLAT
Surround: OFF
Others are set to the previous power-off setting (the last state).
Leaving the test mode
When frequency is preset in the specified state, the unit turns on normally and returns to the normal operation state.
Table 19 TEST_TuSet preset frequency table
All FM bands are preset to FM monaural.
TEST 6 Tuner preset clear test
Object: Clearing all presetttings.
This function is opened to the users in the operation manual.
Function: Canceling all presettings.
Operation: "PRESET CL" appears by entering test mode. All tuner preset memories are cleared. Last preset information,
etc. for each band are also returned to initial state and all presettings are cleared. The unit changes the last
settings of the following items and enters the normal power-on state.
Function: Tuner
Band: FM-Stereo
Frequency: Minimum receiving frequency
Others are set to the previous power-off setting (the last state).
Leaving the test mode
Clearing presets are completed and POWER ON in the specified state. Then, the unit returns to the normal operation state.
Preset clear display
Figure 19-1
– 19 –
MD-MX30/MX30W
ADJUSTMENT
TUNER SECTION
fL: Low-range frequency
fH: High-range frequency
fC: Center-range frequency
• AM adjustment and confirmation
AM signal oscillator Frequency 400 Hz, 30%, AM modulation
MD-MX30
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: 1.3 ± 0.1 V
(VT line voltage of Adjust the indication fH: 8.5 ± 1.3 V
TP301) of set to 530 kHz. (Only confirmation)
fH: (1,720 kHz)
Tracking fC: T302 (990 kHz) Set the output of
MD-MX30W
Adjusting item
IF Adjust the indication of Set IF waveform
Frequency cover fL: T306 (522 kHz) fL: 1.3 ± 0.1 V
(VT line voltage of Adjust the indication fH: 8.5 ± 1.3 V
TP301) of set to 522 kHz. (Only confirmation)
Tracking fC: T302 (990 kHz) Set the output of
Adjusting object
T351 set to 1,620 kHz.
fH: (1,620 kHz)
• FM mute level adjustment
MD-MX30:
FM signal oscillator Frequency 1 kHz, 67.5 kHz dev.
MD-MX30W:
FM signal oscillator Frequency 1 kHz, 40 kHz dev.
Adjusting
method
450 kHz to maximum.
speaker terminal
to maximum.
Adjusting
method
450 kHz to maximum.
speaker terminal
to maximum.
• Setting the Test Mode
While holding down the TUNER(BAND) button and the MD
PLAY button, press the ON/STAND-BY button. Frequencies
are rewritten in memory as shown in table 18. Call them using
the JOG DIAL for tuner circuit adjustment and check.
Note that once you reinitialize the settings, the frequencies
recorded by users will be changed.
Preset No.
Frequency
Preset No.
Frequency
(MD-MX30) (MD-MX30W)
P01 87.5 MHz P06 530 kHz 531 kHz
P02 108.0 MHz P07 1,720 kHz 1,602 kHz
P03 90.0 MHz P08 600 kHz 603 kHz
P04 106.0 MHz P09 1,400 kHz 1,404 kHz
P05 98.0 MHz P10 990 kHz 990 kHz
Frequency
Table 20
AM Loop Antenna
IF:Speaker Terminal
Freqency cover:TP301
Electronic
voltmeter
AM signal oscillator
UNIT
GND
Figure 20-1 AM IF/Frequency Cover
TUNER PWB-A3
IC303
12
13
14
11
15
10
16
9
17
8
18
7
19
20
21
22
23
24
CF352
6
5
4
3
2
1
AM IF
T351
Frequency
Adjusting
method
98 MHz 26 dB(EMF) VR351 Input: SO301B
SO301A
FM signal oscillator
Adjusting
object
Speaker Terminal
UNIT
Adjusting object
Output: Speaker
Terminal
Electronic
voltmeter
OSC.AM
AM ANT.
T306
T302
CF302
FE301
VR351
FM MUTE
LEVEL
TP301
12
13
14
15
16
17
18
19
20
21
22
IC302
11
10
9
8
7
6
5
4
3
2
1
Figure 20-2 FM Mute Level
• Erasing the registered broadcast station
When the power is off, press and hold the TUNER(BAND)
button and the MD STOP button, and then press the ON/
STAND-BY button.
All the registered stations are erased.
SO301B
SO301A
ANTENNA TERMINAL
Figure 20-3 ADJUSTMENT POINT
CD SECTION
• Adjustment
Since this CD system incorporates the automatic adjustment functions, readjustment is not needed when replacing the pickup.
Therefore, PWBs and pickups can be combined freely.
Each time a disc is changed, automatic adjustment is performed. Therefore, playback of each disc can be performed under
optimum conditions.
– 20 –
MD SECTION
Enter the test mode, adjust or set as shown in the following table according to the repair operations.
MD-MX30/MX30W
Execution item
Repair
operations
PICK replacement
HEAD replacement
MECHANISM
replacement
MAIN PWB
assembly replacement
MD microcomputer
replacement
MD LSI replacement
RF IC replacement
EEPROM IC
replacement
number to and
required
1
basic setting
89
TEMP
TEMP
1
Checking
EEPROM
setting
EEPROM_SET
1
1
2
Writing the
EEPROM
setting
TEST-CANCEL
2
2
3
1
1
1
2
2
3
3
indicate the order of inplementation.
AUTO-YOBI
adjustment
AUTO–YOBI AUTO–ADJ AUTO–FAB
3
3
4
AUTO-
adjustment
4
4
5
AUTO-FAB
adjustment
5
5
6
2
1
4
4
2
5
5
3
6
6
Writing the
EEPROM
setting
TEST-CANCEL
TEST-PLAY
6
6
7
3
4
7
7
Operation check
TEST-REC
7
8
1
7
8
4
5
8
8
8
9
5
6
9
9
" – " is an item that you don't have to execute.
The EEPROM writing result is shown at the end of the test mode
OK_EEPROM: "SET" and "YOBI COMPLETE" were written normally
WR_EEPROM:
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.
NG_EEPROM: "SET" could not be written.
Check the connection between the MD microcomputer
and the EEPROM.
1. Preparation for adjustment Test disc
Type Test disc
1 High reflection disc TGYS1 (SONY) [for Playback] RRCDT0101AFZZ
2 Low reflection disc Recording minidisc ––––––––––––
3 Head Adjusting transparent RRCDT0103AFZZ
4 Low reflection disc Pre-adjustment disc [TEAC Test MD] 88GMMD-318
Extension Cable (See Fig. 29)
Type
1 Extension PWB for servicing RUNTK0532AFZZ
2 Extension Connector (2 Pin) QCNWK0129AFZZ
3 Extension Cable (6 Pin) QCNWK0130AFZZ
4 Extension Cable (5 Pin) QCNWK0109AFZZ
5 Extension Cable (28 Pin) QCNWK0108AFZZ
SONY 80 minutes disc is recommended.(example:PRISM 80)
Part No.
Part No.
– 21 –
MD-MX30/MX30W
2. Test Mode
Test mode setting method
1. While holding down the MD PLAY and SURROUND buttons simultaneously, press the ON/STAND-BY button.
(State A is changed to state B .)
2. Insert the playback-only disc 1 (high reflection disc) or the recordable disc 2 (low reflection disc). (State is changed to C.) If "R/
P WHICH?" appears, the mechanism and the PWB can be mismatched. Check whether the combination of the playing/recording
PWB and mechanism are appropriate.
If "R/P WHICH?" still appears, eject the disc and check as follows.
Check items
Pin 3 of IC1401
DC0.2V
DC1.5V
DC1.8V
Below DC1.5V
–NG
Result Probable cause and remedy
To check 2NG–
Microcomputer may have recognized the PWB
as for playback-only. Perform check 1.
Check end
NG
–
Perform check 2.
Microcomputer may have recognized the PWB
as for playback-only. Perform check 1.
MD TEST
Step Mode
Playback power output
1
[ppw]
Recording power output
2
[rpw]
Cannot enter
[rpw] mode
Check 1: Check the pin 100 line of IC1401 for defective soldering. Check the pin 93 line of IC1401 for short-circuit and defective
soldering (Also check the SW PWB).
Check 2: Check the pin 3 line of IC1401 for defective soldering and short-circuit with other patterns. Check that the pickup laser
is not broken.
A tsm 1A
e : TEST MODE represents version of MD microcomputer.
STOP state
B EJECT
(When the MD STOP button is pressed in the C state, the indication A is
C AUT YOBI
restored. To restore
C again, press the EQUALIZER button.)
Entering the specific mode
Whenever the EQUALIZER button is pressed, the mode is changed.
AUTO YOBI
(AUTO adjustment) (AUTO adjustment) (FAB adjustment) (RESULT
EEPROM_SET MAN FAB
(EEPROM setting) (MANUAL FAB adjustment) (MANUAL adjustment) (MANUAL adjustment)
AUTO AJST
RST YOBIAUT FAB
YOBI)
RESULT
MNU YOBI MNU AJST
Cancel of test mode
To restore the usual state once reset.
*Before pressing the MEMORY/ENTER 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 MEMORY/
ENTER button to write data in the EEPROM.
(Data is written in the EEPROM by pressing the MEMORY/ENTER 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
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 • Remove do not set this mode since it is not necessary for the service.
• RESULT mode (final adjustment)
• MANUAL pre-adjustment mode
• MANUAL adjustment mode
• MANUAL FAB 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.
– 22 –
MD-MX30/MX30W
1. EJECT mode
Step No.
Step 1 Test mode EJECT state [ _ _ E J E C T _ _ _ ]
Step 2 Press the DISPLAY button. Playback power output state [ p p w _ _ _ _ _ _ _ ]
Step 3 Press the DISPLAY button. Rec power output state [ r p w _ _ _ _ _ _ _ ]
Step 4 Press the DISPLAY button. Therefore do not set this mode since it is not necessary [ x p w _ _ _ _ _ _ _ ]
Step 5 Press the X-BASS button. TEMP setting of EEPROM setting
Step 6 Press the CD PLAY button. CONTROL setting of EEPROM setting
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. Setting Method Display
Step 1 Test mode STOP state [ t s m 1 A e ]
Step 2
Step 3 Press the MD 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 MD STOP button.
Press once the MD STOP button.
Setting Method
Remarks Display
for the service.
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
• : Adjustment name
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 A 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 ADIP error [ a a ]
Step 7 Adjustment value output [ C a n ' t _ A D J . ]
Press the EQUALIZER button two times.
Press the MD PLAY button.
End of adjustment If adjustment is OK, Step 4.
Press the MD PLAY button. STEP 5
Press the
Continuous playback (groove section)
Press the
Press the
MD STOP
MD STOP
MD STOP
button. STEP 2 AUTO adjustment
button. STEP 2 AUTO adjustment menu
button. STEP 2 AUTO adjustment menu
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.
[ a c ]
• : Adjustment name, : Measurement value, : Address
– 23 –
MD-MX30/MX30W
4. AUTO FAB adjustment mode
Step No.
Step 1 Test mode STOP state The AUTO preliminary adjustment should have been completed. [ t s m 1 A e ]
Step 2
Step 3
Step 4 Adjustment value output STEP 2 AUTO adjustment [ _ _ ]
• , , : Measurement value
5. EEPROM setting mode
A) Focus setting
Step No.
Step 1 Test mode STOP state [ t s m 1 A e ]
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9
Step 10
Step 11
Step 12
Step 13
Press the EQUALIZER button nine times.
Press the MD PLAY button.
Press the MD PLAY button.
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
• : Setting value
B) Spin setting
Step No. Setting Method
Step 1 Test mode STOP state [ t s m 1 A e ]
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9
Step 10
Step 11
Step 12
Step 13
Step 14
• : Setting value
Setting Method
Press the EQUALIZER button three times.
Press the MD PLAY button.
Press the
Press the EQUALIZER button nine times.
Press the MD PLAY button.
Press the
Press the MD PLAY button.
Press
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
MD STOP
Setting Method
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
the
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
button.
button.
button.
button.
button.
button.
button.
button.
button.
button.
button.
bu
tton.
button.
button.
button.
button.
button.
button.
button.
button.
AUTO adjustment menu [ _ A U T _ F A B _ _ ]
The slide moves to the innermost periphery, and automatic [F A B _ ]
[ E E P R O M_ S E T ]
[ _ _ F o c u s _ _ _ ]
[F G _ _ _ _ _ _ ]
[F F 1 _ _ _ _ _ ]
[F F 2 _ _ _ _ _ ]
[F Z H L E V _ _ ]
[F O K L E V n _ ]
[F O K L E V f _ ]
[F O K L P F n _ ]
[F O K L P F f _ ]
[W A I T f _ _ _ ]
[D S C J G _ _ _ ]
[ E E P R O M_ S E T ]
[ _ _ F o c u s _ _ _ ]
[ _ S p i n d l e _ _ ]
[S P G _ _ _ _ _ ]
[S P G _ i n _ _ ]
[S P G _ m i d _ ]
[S P G _ o u t _ ]
[S P 1 _ _ _ _ _ ]
[S P 2 _ _ _ _ _ ]
[S P 3 _ _ _ _ _ ]
[S P 4 _ _ _ _ _ ]
[S P 5 _ _ _ _ _ ]
[S P D L M _ _ ]
Remarks Display
Display
Display
C) Tracking setting
Step No.
Step 1 Test mode STOP state [ t s m 1 A e ]
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9
Setting Method
Press the EQUALIZER button nine times.
Press the MD PLAY button.
Press the
EQUALIZER
Press the MD PLAY button.
Press the
Press the
Press the
Press the
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
button two times.
button.
button.
button.
button.
Display
[ E E P R O M_ S E T ]
[ _ _ F o c u s _ _ _ ]
[ _ T r a c k i n g _ ]
[T G _ _ _ _ _ _ ]
[T F 1 _ _ _ _ _ ]
[T F 2 _ _ _ _ _ ]
[S V C N T 4 _ _ ]
[T R B L V o _ _ ]
– 24 –
C) Tracking setting
Step No. Setting Method
Step 10
Step 11
Step 12
Step 13
Step 14
Step 15
Step 16
Step 17
Step 18
Step 19
Step 20
Step 21
Press he
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
button.
button.
button.
button.
button.
button.
button.
button.
button.
button.
button.
button.
Display
[[T R B L V t _ _ ]
[T R K L V o _ _ ]
[T R K L V t _ _ ]
[T D P W o _ _ _ ]
[T D P W t _ _ _ ]
[S L C T o _ _ _ ]
[S L C T t _ _ _ ]
[S L C T m _ _ _ ]
[T C R S C 1 P _ ]
[C O T L V p _ _ ]
[C O T L V r _ _ ]
[S L B K m _ _ _ ]
• : Setting value
D) Sled setting
Step No.
Step 1 Test mode STOP state [ t s m 1 A e ]
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9
Step 10
Step 11
Press the EQUALIZER button nine times.
Press the MD PLAY button.
Press the EQUALIZER button three times.
Press the MD PLAY button.
Press the
Press the
Press the
Press the
Press the
Press the
Setting Method
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
button.
button.
button.
button.
button.
button.
Display
[ E E P R O M_ S E T ]
[ _ _ F o c u s _ _ _ ]
[ _ _ _ S l e d _ _ _ ]
[S L G _ _ _ _ _ ]
[S L 2 _ _ _ _ _ ]
[S L D L I M _ _ ]
[S L D L E V _ _ ]
[S L K L V k _ _ ]
[S L K L V t _ _ ]
[S L K L V m _ _ ]
• : Setting value
MD-MX30/MX30W
E) TEMP setting
Step No.
Step 1 EJECT state [ _ _ E J E C T _ _ _ ]
Step 2 Press the X-BASS button. [ T E M P_ _ ]
Setting Method
Display
• : Setting value, : Measurement value
F) CONTROL setting
Step No.
Step 1 Test mode STOP state [ t s m 1 A e ]
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9
Step 10
Step 11
Step 12
Step 13
Step 14
Step 15
Step 16
Press the EQUALIZER button nine times.
Press the MD PLAY button.
Press the EQUALIZER button five times.
Press the MD PLAY button.
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Press the
Setting Method
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
button.
button.
button.
button.
button.
button.
button.
button.
button.
button.
button.
Display
[ E E P R O M_ S E T ]
[ _ _ F o c u s _ _ _ ]
[ _ C o n t r o l _ _ ]
[C O N T R L 1 _ ]
[C O N T R L 2 _ ]
[S P K L E V m _ ]
[A D J T T M _ _ ]
[H D E Q A D _ _ ]
[L D E Q A D _ _ ]
[G D E Q A D _ _ ]
[H D E Q B D _ _ ]
[L D E Q B D _ _ ]
[G D E Q B D _ _ ]
[H A L S G _ _ _ ]
[L A L S G _ _ _ ]
– 25 –
MD-MX30/MX30W
Step No.
Step 17
Step 18
Step 19
Step 20
Setting Method
Press the
Press the
Press the
Press the
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
button.
button.
button.
button.
Display
[G A L S G _ _ _ ]
[H A L S O F S _ ]
[L A L S O F S _ ]
[G A L S O F S _ ]
• : Setting value
G) ADJUST setting
Step No. Setting Method
Step 1 Test mode STOP state [ t s m 1 A e ]
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Step 9
Step 10
Step 11
Step 12
Press the EQUALIZER button nine times.
Press the MD PLAY button.
Press the EQUALIZER button six times.
Press the MD PLAY button.
Press the
Press the
Press the
Press the
Press the
Press the
Press the
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
EQUALIZER
button.
button.
button.
button.
button.
button.
button.
Display
[ E E P R O M_ S E T ]
[ _ _ F o c u s _ _ _ ]
[A D J S E T _ _ _ _ ]
[C O K _ _ _ _ _ ]
[F A T _ _ _ _ _ ]
[T A T _ _ _ _ _ ]
[C A T _ _ _ _ _ ]
[F A B _ _ _ _ _ ]
[S T R _ _ _ _ _ ]
[S F S _ _ _ _ _ ]
[S T C _ _ _ _ _ ]
• : Setting value
6. TEST-PLAY mode
(For confirmation of the playback ability at the named address.)
Step No. Setting Method
Step 1 Test mode STOP state The AUTO preliminary adjustment should have been completed. [ t s m 1 A e ]
Step 2 Press the X-BASS 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 3 2 ]
Press once the MD PLAY button.
Step 4 Continuous playback (pit section) (Address + C1 error indication) [s c ]
Continuous playback (groove section)
Step 5 Press once the DISPLAY button. (Address + ADIP error indication) [a a ]
Continuous playback (groove section)
Step 6
• Whenever the X-BASS button is pressed in the address setting mode, the address changes as follows.
0 0 3 2 → 0 3 C 0 → 0 7 0 0 → 0 8 A 0 → 0 0 5 0 → 0 0 3 2 →
Press once the MD STOP button
(Address + C1 error indication) [a c ]
. TEST-PLAY menu [ T E S T _ P L A Y _ ]
Remarks
…………
Display
7. TEST-REC mode
With recording mini disk (For confirmation of the playback ability at the named address.)
Step No. Setting Method Remarks Display
Step 1 Test mode STOP state The AUTO preliminary adjustment should have been completed. [ t s m 1 A e ]
Step 2 Press twice the X-BASS button. TEST-REC menu [ T E S T _ R E C _ _ ]
Step 3 Press once the DISPLAY button. ADDERS setting (indication of address initial value) [ a 0 0 3 2 _ p w ]
Step 4
Step 5
• Whenever the X-BASS button is pressed in the address setting mode, the address changes as follows.
0 0 3 2 → 0 3 C 0 → 0 7 0 0 → 0 8 A 0 → 0 0 5 0 → 0 0 3 2 →
Press once the MDPLAY button.
Press once the MDSTOP button.
8. INNER mode
Step No.
Step 1 Test mode STOP state [ t s m 1 A e ]
Step 2 Press the CD PLAY button. INNER menu [ _ _ I N N E R _ _ ]
Step 3
Step 4
•
Press once the MD PLAY button.
Press once the MD STOP button.
: Address
Setting Method
Continuous recording [ a _ p w ]
TEST-REC menu [ T E S T _ R E C _ _ ]
…………
Remarks Display
INNER switch position measurement [s c ]
(SUBQ address and C1 error are also indicated.)
INNER menu [ _ _ I N N E R _ _ ]
– 26 –
MD-MX30/MX30W
Lead-in switch position measurement mode
Insert the high reflection test disk TGYS1.
Note: Adjust the lead-in switch position within the range of FF85 FFD2.
1. Measure the lead-in switch position. Loosen the screw (A1) x 1 pc.
which fixes the mechanism switch PWB.
2. When the lead-in switch is located FF85 or less, tighten the screw
while pressing the PWB in the direction of the arrow A. When FFD2
or more, to direction B. Measure the lead-in switch position again.
After position adjustment is completed, fix the PWB with the screw
(A1) x 1 pc.(shown in Figure 27-1)
Magnetic head mounting position check
Check the mounting position whenever the magnetic head and the
•
optical pickup are replaced.
• Move the optical pickup to the center to adjust the position easily.
1. Set the adjusting transparent disc 3.
2. Press down the magnetic head up shift arm by hand to raise the
magnetic head.
3. View the set from above to check whether the magnetic head aligns
with the optical pickup objective lens.
4. Check that the magnetic head moves up and down smoothly.
(shown in Figure 27-2)
A
B
(A1) X1
Figure 27-1
Magnetic head
Tangential direction
Objective lens
Radiai
Head up- shift arm
Rotating the loading motor forcibly
The loading motor can be rotated forcibly by rotating the VOLUME
UP/DOWN knob while STOP or EJECT in the test mode appears on
the display.
Mechanism Adjustment
1. Optical pickup grating inspecting method
4Pin of IC1201
GND (TP1202)
6Pin of IC1201
EOUT (TP1129)
9Pin of IC1201
FOUT (TP1130)
100K
470p
470p
100K
OSILLOSCOPE
GND CH1 CH2
XY
LISSAJOUS WAVEFORM
Less than a:b = 4:1
Figure 27-3 Optical Pickup Grating Deviation
Measuring Method
After auto adjustment (COMPLETE appears) in the test mode (auto)
using the high reflection MD disc TGYS1, adjust the Lissajous
waveform (x-y) of EOUT to FOUT.
1. Slightly loosen the 3 screws of the spindle motor, adjust while
observing the Lissajous waveform.
2. After adjustment, tighten screws 1, 2, and 3 in numerical order.
(See Fig. 27-4.)
Figure 27-2
2
a
b
3
1
2
1
3
adjusting
hole
Check the Lissajous waveform,
shifting the mounting position with
a screwdriver (to be fitted into the
disc motor adjusting hole).
Figure 27-4
– 27 –
MD-MX30/MX30W
EEPROM WRITING PROCEDURE
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 22.
"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 VOLUME knob.
Ambient temperature correction
+ 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 MEMORY/ENTER button and write the temperature
setting into the EEPROM.
EEPROM DATA LIST (Version : 01)
Focus setting
Item indication Setting
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 0 1 H
D S C J G 1 4 H
Spin setting
Item indication Setting
S P G 2 0 H
S P G — i n B 8 H
S P G — m i d 9 0 H
S P G — o u t 7 0 H
S P 1 1 0 H
S P 2 9 3 H
S P 3 E D H
S P 4 E E H
S P 5 2 0 H
S P D L I M 7 F H
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 22, and insert a disc.
"AUT YOBI"
(3) Press the EQUALIZER button eight times.
"EEPROM SET"
(4) Set the value according to the EEPROM DATA LIST using the
VOLUME knob.
(5) Press the MEMORY/ENTER button, and the settings will be
written into the EEPROM.
(6) Enter the test mode again, perform an "AUTO YOBI sdjustment",
and write the results into the EEPROM.
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
S L B K m 0 8 H
– 28 –
MD-MX30/MX30W
Sled setting
Item indication Setting
S L G 3 B H
S L 2 2 D 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 5 H
S L K L V t 2 E H
S L K L V m 5 5 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
The FAB value changes after the FAB adjustment.
*
Control setting
Item indication Setting
C O N T R L 1 8 0 H
C O N T R L 2 0 1 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
M 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 1 1 H
L A L S G 1 1 H
G A L S G 1 1 H
H A L S O F S F C H
L A L S O F S 0 0 H
G A L S O F S 0 0 H
*
From Optical
Pickup Unit
From Magnetic Head
Extension PWB for service
(RUNTK0532AFZZ)
Fit the extension PWB for service to the mechanism
2Pin extension connector
QCNWK0129AFZZ
From mechanism switch
PWB
28Pin extension
flat cable
QCNWK0108AFZZ
MD MAIN PWB
6Pin extension flat cable
QCNWK0130AFZZ
5Pin extension flat cable
QCNWK0109AFZZ
Figure 29
– 29 –
MD-MX30/MX30W
MD error messages
EXPLANATION OF ERROR DISPLAY
Error message
'BLANK MD'
'Can't COPY'
'Can't EDIT'
'Can't REC'
'Can'tREAD*'
'DISC FULL'
'Er-MD80'
'Er-MD**'
'NAME FULL'
'NO DISC'
'NOT AUDIO'
'PLAY MD'
'PROTECTED'
'TEMP OVER'
'Can'tREAD*'
'TOC FULL'
'TOC FULL*'
'Er-MD41'
'NO SIGNAL'
'Can'tREAD*'
TOC FORM **
'Can'tWRITE'
'? DISC'
'Can'tSTAMP'
'Tr.Protect'
Description Remarks
No track is recorded on the disc
Digital recording from a copy prohibited source
Editing impossible
Sound memory overflow while recording
Impossible continuous SD writing
Focus lead in time-over
Track search time-over
No free area available on the disc
EEPROM readout check sum error
Loading mechanism operation error
Characters exceeds limit (40)
No MD is loaded
Played track is not audio,
Recording or editing on a playback-only MD
Recording or editing on a recording protected
MD (recordable)
Detected ambient high temperature
Cannot complete P-TOC information reading
No space available for recording or editing
No space available for name information input
Error in UTOC writing test
Cannot synchronize signals while digital input recording
Cannot complete U-TOC information reading
Error data disc is detected
Cannot complete UTOC writing normally
Loaded MD is not for audio
TNO number difference for name stamp function
Editing track is in write protected mode
*: Details
f: FOCUS ERR
r: READ ERR
s:
SEARCH TIME OVER
w: SD WRITE TIME OVER
**: Operation state
(Error code)
1*:
Recording head fall
2*:
Recording head rise
f*:EJECT
It is written in the operation
manual to ask for repairs if
error occurs continuously.
Appears when no sound is detected
*: Details
a:
SERVO ADJUSTMENT ERR
f: FOCUS ERR
s:
SEARCH TIME OVER
r: READ ERR
*: Sector number
**: Error number
*: Details
u: UTOC READ ERR
*: Details
L*: LOOP
a_: ADDRESS ERR
t_: FTNO>LTNO
CD error messages
Error message
`E-CD**
`E-CD**`
`NO DISC`
`NO DISC`
Pick mechanism error
Tray error
Focus error
IL time-over
Description Remarks
00: PICK MECHANISM ERRS
01:
PU-IN SW DETECTION NG
20: TRAY ERRS
21:
– 30 –
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