Sharp MD-X60H User manual

– 1 –
MD-X60H
CONTENTS
MD-X60H
SERVICE MANUAL
SHARP CORPORATION
No.S6849MDX60H//
• 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
SAFETY PRECATION FOR SURVICE MANUAL.............................................................................................................. 2
INPORTANT SERVICE NOTES (FOR U.K. ONLY) ...........................................................................................................3
WIRING OF PRIMARILY SUPPLY LEADS (FOR U.K. ONLY)..........................................................................................3
SPECIFICATIONS ............................................................................................................................................................. 4
NAMES OF PARTS ........................................................................................................................................................... 5
OPERATION MANUAL .......................................................................................................................................................8
DISASSEMBLY................................................................................................................................................................ 10
REMOVING AND REINSTALLING THE MAIN PARTS................................................................................................... 14
ADJUSTMENT ................................................................................................................................................................. 17
EXPLANATION OF ERROR DISPLAY.............................................................................................................................27
EEPROM WRITING PROCEDURE ..................................................................................................................................29
RDS OPERATION ............................................................................................................................................................31
NOTES ON SCHEMATIC DIAGRAM .............................................................................................................................. 35
TYPE OF TRANSISTOR AND LED ................................................................................................................................. 35
WIRING DIAGRAM .......................................................................................................................................................... 36
BLOCK DIAGRAM ........................................................................................................................................................... 38
SCHEMATIC DIAGRAM / WIRING SIDE OF P.W.BOARD............................................................................................. 42
WAVEFORMS OF CD CIRCUIT...................................................................................................................................... 69
WAVEFORMS OF MD CIRCUIT ..................................................................................................................................... 70
TROUBLESHOOTING (CD SECTION) ........................................................................................................................... 72
TROUBLESHOOTING (MD SECTION) ........................................................................................................................... 76
FUNCTION TABLE OF IC................................................................................................................................................ 81
REPLACEMENT PARTS LIST/EXPLODED VIEW/PACKING OF THE SET
Dolby noise reduction manufactured under license from Dolby
Laboratories Licensing Corporation.
"DOLBY" and the double-D symbol are trademarks of Dolby
Laboratories Licensing Corporation.

MD-X60H
– 2 –
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.
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I
DENNA BRUKSANVISNING SPECIFICERAS. KAN
ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASERSTRÅLNING,
SOM ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.
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.
VAROITUS! LAITTEEN KÄYTTÄMINEN MUULLA KUIN TÄSSÄ
KÄYTTÖOHJEESSA MAINITULLA TAVALLA SAATTAA
ALTISTAA KÄYTTÄJÄN TURVALLISUUSLUOKAN 1
YLITTÄVÄLLE NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE.
VARNING - OM APPARATEN ANVÄNDS PÅ ANNAT SÄTT ÄN I
DENNA BRUKSANVISNING SPECIFICERAS. KAN
ANVÄNDAREN UTSÄTTAS FÖR OSYNLIG LASERSTRÅLNING,
SOM ÖVERSKRIDER GRÄNSEN FÖR LASERKLASS 1.
LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT
CAUTION
Use the MD/CD component system only in accordance with the instruc-
tions given in this manual and do not attempt to interfere with the in-
terlock switch or make any other adjustment as this may result in
exposure to hazardous radiation.
SAFTY ORECAUTION FOR SERVICE MANUAL
WARNINGS (CD)
THEAEL(ACCESSIBLEEMISSIONLEVEL)OFTHELASER
POWEROUTPUTISLESSTHANCLASS1BUTTHELASER
COMPONENT IS CAPABLE OF EMITTING RADIATION
EXCEEDING THE LIMIT FOR CLASS 1. THEREFORE IT IS
IMPORTANTTHATTHEFOLLOWINGPRECAUTIONSARE
OBSERVED DURING SERVICING TO PROTECT YOUR
EYES AGAINST EXPOSURE TO THE LASER BEAM.
1-WHEN THE CABINET IS REMOVED, THE POWER IS
TURNEDON WITDOUTA COMPACTDISC INPOSITION
ANDTHEPICK-UPISONTHEOUTEREDGETHELASER
WILL LIGHT FOR SEVERAL SECONDS TO DETECT A
DISC. DO NOT LOOK INTO THE PICK-UP LENS.
2-THE LASER POWER OUTPUT OF THE PICK-UP UNIT
AND REPLACEMENT SERVICE PARTS ARE ALL
FACTORY PRE-SET BEFORE SHIPMENT.
DO NOT ATTEMPT TO RE-ADJUST THE LASER PICK-
UP UNIT DURING REPLACEMENT OR SERVICING.
3-UNDER NO CIRCUMSTANCES STARE INTO THE PICK-
UP LENS AT ANY TIME.
4-CAUTION-USEOF CONTROLSOR ADJUSTMENTS,OR
PERFORMANCE OF PROCEDURES OTHER THAN
THOSE SPECIFIED HEREIN MAY RESULT IN
HAZARDOUS RADIATION EXPOSURE.
WARNINGS (MD)
The AEL (ACCESSIBLE EMMISSION LEVEL) of the laser
power output is less than class 1 but the laser component is
capable
ofemittingradiationexceedingthelimitforclass1.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 laserpoweroutputofthepickupunit andreplacement
service parts are all factory pre-set before shipment.
Do not attempt to re-adjust the laser pick-up 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-USEofcontrolsoradjustments,orperformance
ofproceduresotherthanthosespecifiedhereinmayresult
in hazardous radiation exposure.
VARO ! Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.
VARNING! Osynlig laserstralning när denna del är öppnad och spärren är urkopplad. Betrakta ej strälen.
(FOR U.K. ONLY)

– 3 –
MD-X60H
WIRING OF PRIMARILY SUPPLY LEADS (FOR U.K. ONLY)
Precaution to be taken when replacing and servicing the
laser pickup.
Thefollowingprecautionsmustbeobservedduringservicing
to protect your eyesvagainst exposure to the laser.
Warning of possible eye damage when repairing:
If the AC power plug is connected when the inner cover of
the unit is removed, the laser will light up during focus
access (about 1 second) (Fig. 3-1).
During this operation, the laser will leak from the opening
betweenthemagneticheadandcartridgeholder(Fig.3-2).
Inorder toprotect youreyes, youmust notlook atthe laser
during repair.
Beforerepairing,besuretodisconnectthe ACpowerplug.
Figure 3-1
Figure 3-2
Magnetic Head
Optical pickup
,,,

Optical pickup
Mechanism
Chassis
Spindle Motor
Magnet Head Laser Beam
Cartridge Holder
NG: The “NG” lamp lights and the buzzor sounds.
OK: The “GOOD” lamp lights.
Judgment
Unit
Set current (Cutoff current)
Set time
Set name
Withstanding Voltage Tester
Test voltage
Set value
4,240 VPEAK
3,000 VRMS
6 secs
4 mA
Before returning the unit to the customer after completion of a
repair or adjustment it is necessary for the following withstand
voltage test to be applied to ensure the unit is safe for the
customer to use.
Setting of Withstanding Voltage Tester and set.
PROBE
AC OUT UNIT
SHORT-CIRCUT
AC POWER
SUPPLY CORD
CONNECT THE PROBE
TO GND OF CHASSIS
SCREW
WITHSTANDING
VOLTAGE TESTER
IMPORTANT SERVICE NOTES (FOR U.K. ONLY)
Brown
Core
Blue
AC Power
Supply Cord
Bushing AC Power
Supply Cord
Power
Transformer
Nylon Band 80mm
92LN-BAND 1318A
Figure 3-3
Screw

MD-X60H
– 4 –
Specifications for this model are subject to change without
prior notice.
SPECIFICATIONS
MiniDisc recorder section
Type: MiniDisc recorder
Signal readout: Non-contact, 3-beam semi-conductor laser
pickup
Audio channel: Stereo; 2 channels
Monaural; 1 channel
(long-time recording mode)
Frequency response: 20 - 20,000 Hz
Rotation speed: 400 - 900 rpm CLV, Approx
Quantization: 16-bit linear
Filter: 8-times oversampling digital filter
Error correction: ACIRC (Advanced Cross Interleave Reed-
Solomon Code)
Coding: ATRAC (Adaptive TRansformed Acoustic
Coding)
Recording method: Magnetic modulation overwrite method
D/A converter: 1-bit D/A converter
Sampling frequency: 44.1 kHz
Wow and flutter: Unmeasurable
(less than 0.001% W. peak)
Signal/noise ratio: 95 dB (1 kHz)
Dynamic range: 90 dB (1 kHz)
Compact disc player section
Type: 3-disc multi-play 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
D/A converter: 1-bit D/A converter
Filter: 8-times oversampling digital filter
Frequency response: 20 - 20,000 Hz
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 MHz
AM; 522 - 1,620 kHz
Sensitivity: FM; 2.5 µV (75 ohms unbalanced)
AM; 650 µV/m
Cassette deck section
Type: Compact cassette tape
Frequency response: 50 - 14,000 Hz (Normal tape)
50 - 15,000 Hz (CrO2tape)
Motor: DC motor with electronic governor ×1
Signal/noise ratio: 50 dB (Recording/Playback, Dolby NR off)
Dolby NR effect; 10 dB (at over 5 kHz)
Bias and erasure
system: AC
Tape speed: 4.76 cm/sec. (1-7/8 ips.)
Wow and flutter:
Except for U.K.
Except for U.K.
U.K. Only
U.K. Only
0.2 % (DIN 45 511)
Heads: Record/playback ×1
Erase ×1
General
Power source: AC 230 V, 50 Hz
Power consumption: 97 W
Output power: PMPO; 340 W (total)
MPO; 170 W (85 W + 85 W)
(DIN 45 324)
RMS; 100 W (50 W + 50 W)
(DIN 45 324)
Input terminals: MD IN/AUX (Analogue-1); 500 mV/47 kohms
Auxiliary (Analogue-2); 500 mV/47 kohms
Auxiliary (Digital); optical
Output terminals: Auxiliary; 2.0 V/1 kohm
Headphones; 16 - 50 ohms
(recommended; 32 ohms)
Speakers; 6 ohms
Dimensions: Width; 240 mm (9-1/2")
Height; 332 mm (13-1/8")
Depth; 325 mm (12-13/16")
Weight: 8.6 kg (19.0 lbs.)
Speaker section
Type: 3-way type [150 mm (6") woofer, 65 mm
(2-1/2") tweeter and super tweeter]
Maximum input power: 100 W
Rated input power: 50 W
Impedance: 6 ohms
Dimensions: Width; 205 mm (8-1/8")
Height; 332 mm (13-1/8")
Depth; 323 mm (12-3/4")
Weight: 4.2 kg (9.3 lbs.)/each
0.15 % (WRMS)
RMS; 100 W (50 W + 50 W)
(10 % T.H.D.)
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.

– 5 –
MD-X60H
NAMES OF PARTS
Front panel
11. On/Stand-by Button: ON/STAND-BY
12. Tuner Call (Band Select) Button: TUNER (BAND)
13. Preset Equalizer Button: PRE-EQ
14. Extra Bass Button: X-BASS
15. Auxiliary Input (Digital/Analogue) Select Button: AUX
16. MD Compartment
17. Sampling Frequency Indicators
18. (CD) Open/Close Buttons:
19. (CD) Play Buttons: 1 , 2 , 3
10. (CD) Play/Pause Button and Indicator:
11. (CD) Stop Button:
12. Volume Up/Down Buttons: VOLUME
13. (MD) Record Button: REC
14. Sound Synchro Record Button
15. (MD) Play/Pause Button:
16. (MD) Stop Button:
17. (MD) Eject Button:
18. Edit Button CD MD: CD MD
19. Edit Button MD MD: MD MD
20. Edit Button TAPE MD: TAPE MD
21. (CD/MD) Track Edit Button: TRACK EDIT
22. Timer/Delete Button: TIMER/DELETE
23. Display Button: DISPLAY
24. (MD) Record Mode Button: REC MODE
25. (MD) Pole Position Button: POLE POSITION
26. Edit Button CD TAPE: CD TAPE
27. Edit Button MD TAPE: MD TAPE
28. (MD) Name/TOC-Edit Button: NAME/TOC EDIT
29. (TUNER) Tuning Down Button:
3 (CD) Track Down/Review Button:
3 (MD) Track Down/Review/Cursor Button:
30. Jog Dial
31. (TUNER) Tuning Up Button:
3 (CD) Track Up/Cue Button:
3 (MD) Track Up/Cue/Cursor Button:
32. Enter Button: ENTER
33. (TAPE) Dolby NR Button: DOLBY NR
34. (TAPE) Reverse Mode Button: REVERSE MODE
35. Edit/Auxiliary 1 (Analogue) Input Socket: MD IN/AUX 1
36. (TAPE) Fast Wind Buttons:
37. (TAPE) Forward Play Button:
38. (TAPE) Stop Button:
39. (TAPE) Reverse Play Button:
40. (TAPE) Record Pause Button:
41. Auxiliary Input Level (Analogue) Control: INPUT LEVEL
42. Cassette Compartment
43. Headphone Socket: PHONES
Rear panel
11. Auxiliary Digital Input Socket (Optical)
12. FM 75 Ohms Aerial Socket
13. AM Loop Aerial Socket
14. Reset Button
15. Speaker Terminals
16. AUX 2 (Analogue) Input Sockets
17. Analogue Output Sockets
18. Beat Cancel Switch
19. AC Power Lead
1
2
3
5
6
7
4
28 29
23
31
21 22
30
24
32
18
19
20
25
26
27
89
13
33
34
35
16
10
11
15
12
14
17
37
38
39
40
36
41 42 43
1
2
3
4
5
6
7
8
9

MD-X60H
– 6 –
Display window
11. (CD/MD) Music Schedule Indicators
12. Level Meters
13. (CD/MD) More Tracks Indicator:
14. Character Information Display
15. (TAPE) Direction Indicators: /
16. CD Indicator
17. (TAPE) Loading Indicator
18. (TAPE) Recording Indicator
19. (TAPE) Reverse Mode Indicator
10. (TAPE) Dolby NR Indicator:
11. MD Indicator
12. Pole Position Record Indicator
13. (MD) TOC Indicator: TOC
14. (MD) Record Indicator: REC
15. (MD) Sound Synchro Indicator: S.SYNC
16. (MD) Auto Mark Indicator: AUTO MARK
17. (MD) Recording Mode Indicator: MONO LP
18. Timer Play/Timer Record Indicator
19. (CD/MD) Programme Indicator: PROGRAM
20. (CD/MD) Random Play Indicator: RANDOM
21. (CD/MD) Repeat Indicator:
22. RDS Indicator: RDS
23. Traffic Announcement Indicator: TA
24. Traffic Programme Indicator: TP
25. EON Indicator: EON
26. Programme Type Indicator: PTY
27. Traffic Information Indicator: TI
28. FM Stereo Mode Indicator: STEREO
29. FM Stereo Indicator: ST
30. Sleep Indicator: SLEEP
Speaker section
11. Bass Reflex Duct
12. Super Tweeter
13. Tweeter
14. Woofer
15. Speaker Grille
16. Speaker Wire
1
6
23
5
7
11
8
13
14
15
16
17
18
28
27
21
20
19
9
12
4
10
25
24
23
22 26 2930
1
2
3
45
6
1

– 7 –
MD-X60H
Remote control
11. Remote Control Transmitter LED
12. (MD/CD/TUNER) Direct Key
13. (CD/MD) Programme Button: PROGRAM
14. (CD/MD) Programme Clear Button: CLEAR
15. (CD/MD) Play Mode Button: P-MODE
RDS control section
16. Programme Type/Traffic Information Search Button: PTY. TI
17. EON Button
18. ASPM Button
Tuner control section
19. Tuner Call (Band Select) Button: TUNER/BAND
10. FM Stereo Mode Button: ST MODE
MD control section
11. Record Button: REC
12. Track Up,Cue/Down,Review Buttons: /
13. Stop Button:
14. Play/Pause Button:
15. Sound Synchro Record Button: SOUND SYNCHRO
16. Auto Mark Button: A.MARK
17. Record Mode Button: REC MODE
CD control section
18. Track Up,Cue/Down,Review Buttons: /
19. Play/Pause Button:
20. Stop Button:
21. Play Buttons: 1 , 2 , 3
22. Auxiliary Input (Digital/Analogue) Select Button: AUX
23. Display Button: DISPLAY
24. Time Display Select Button: TIME
Tape control section
25. Fast Wind Buttons: /
26. Stop Button:
27. Play Buttons: /
28. Record Pause Button:
29. Dolby NR Button: DOLBY NR
30. Reverse Mode Button: REVERSE MODE
31. On/Stand-by Button: ON/STAND-BY
32. Extra Bass Button: X-BASS
33. Volume Up/Down Buttons: /
34. Pre-programmed Equalizer Button: PRE-EQ
1
2
345
678
9
10
11 12 13 14
15
16
22
17
18
19
20
23 24 21
25 26 27
28
29
31
32
30
33
34

MD-X60H
– 8 –
SETTING THE CLOCK
1
Press the ON/STAND-BY button to turn the power on.
2
Press the TIMER/DELETE button.
3
Within 10 seconds, turn the jog dial until "TIME ADJUST" appears.
4
Within 10 seconds, press the ENTER button.
The unit will enter the date setting mode.
5
Adjust the "day" using the jog dial.
When you turn the jog dial by one click position the day will change up or down by one. When you turn the jog dial continuously, the day will change repeatedly until the jog dial is released.
6
Press the ENTER button to set the "day".
7
Adjust the "month" using the jog dial.
8
Press the ENTER button to set the "month".
9
Adjust the "year" using the jog dial.
The year 2000 or later is set as follows: [00] indicates the year 2000. [01] indicates the year 2001. The range of dates that can be entered is from January 1, 1997 to December 31, 2099.
10
Press the ENTER button to set the "year".
The unit will enter the time setting mode.
11
Adjust the "hour" using the jog dial.
When you turn the jog dial and let go, the hour will change up or down by one. When you turn and hold it, the hour will change continuously.
12
Press the ENTER button to set the "hour".
13
Adjust the "minute" using the jog dial.
14
Press the ENTER button to set the "minute".
The clock starts operating from "0" seconds. (Seconds are not displayed.)
ON/
STAND-BY
TIMER /
DELETE
ENTER
2 14
12 13
3 4 5 6 7 8 9 10
11
Notes:
In the event of a power failure or when the AC power lead is disconnected, the clock setting will be lost. Reset the time. Whilst recording an MD, you cannot set the date and clock. Be sure to set the date and clock before recording.
Resetting the date and time:
Once you have set the date and time, "TIME ADJUST" will not be displayed in step 2. Turn the jog dial to make the date and time appear.
If you don't need to change the settings, just press the ENTER button without turning the jog dial again.
Checking the date and time:
Press the TIMER/DELETE button. Then turn the jog dial until the date and time are displayed.
Press the DISPLAY button to switch between the date and the time.
After about 10 seconds, the original display will appear. Once the date and the time have been set, this unit will normally display the time when the unit is in the stand-by mode. To check the date, press the DISPLAY button. The display will switch between the date and the time each time you press the button.
(Main unit operation)
Jog dial
Date setting mode Time setting mode
MINIDISC SYSTEM LIMITATIONS
Even if the maximum recording time of a MiniDisc has not been reached, "TOC FULL" may be displayed.
Even if the maximum recording time of a MiniDisc has not been reached, "DISC FULL" may be displayed. Even if several short tracks are erased, the remaining rec- ording time may not show an increase. Two tracks may not be combined in editing.
The total of the recorded time and time remaining on a disc may not add up to the maximum possible recording time.
If recorded tracks are fast reversed or fast forwarded, the sound may skip.
In the MD system, the delimiter of the recording area on an MD is programmed in a TOC. If partial erasing, recording and editing are repeated several times, TOC information will fill up, even though the number of tracks has not reached the limit (255 tracks), and further recording will be impossible. (If you use the all erase function, this MD can be used from the beginning.) If there is any flaw on the MiniDisc, that part is automatically excluded from the space available for recording. Therefore, the recording time becomes shorter. When the remaining recording time of a disc is displayed, short tracks less than 12 seconds long may not be included in the total. For MiniDiscs on which repeated recording and editing operations were per- formed, the COMBINE function may not work. A track recorded from a CD (digital recording) and a track recorded from a radio or other equipment (analogue recording) cannot be combined. A cluster (about 2 seconds) is normally the minimum unit of recording. So, even if a track is less than 2 seconds long, it will use about 2 seconds of space on the disc. Therefore, the time actually available for recording may be less than the remaining time displayed. If there are scratches on discs, those sections will be automatically avoided (no recording will be placed in those sections). Therefore, the recording time will be reduced. An MD which has been recorded or edited repeatedly may skip during fast reverse or fast forward.
TROUBLESHOOTING
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 stnad-by mode and disconnect the AC power plug, then consult your SHARP dealer or service personnel.
General
SYMPTOM POSSIBLE CAUSE REMEDY
The clock is wrong. Did a power failure occur? Try setting it again.
When a button is pressed, the unit does not respond. Set this unit to the stand-by mode and then
turn it back on. Then, retry the operation.
No sound is heard. Is the volume level is set to "0"?
Are the headphones connected? Are the speaker wires disconnected?
Increase the volume level. Disconnect the headphones. Connect the wires securely.
Radios make unusual noise or the picture on the TV screen is distorted. 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 function properly.
It is recommended that you use an external aerial.
CD playback
SYMPTOM POSSIBLE CAUSE REMEDY
Even though a disc has been loaded, "NO DISC" or "ERR" is displayed.
Playback stops in the middle of a track, or playback is not performed properly. Playback sounds are skipped.
The disc is loaded up-side down. The disc is very dirty.
The disc which does not satisfy the stand- ards. Is the unit located near excessive vibra- tions? Has condensation formed inside the unit?
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.
OPERATION MANUALNAMES OF PARTS

– 9 –
MD-X60H
(Continued)
MD recording and playback
SYMPTOM POSSIBLE CAUSE REMEDY
A recording cannot be made. Is the MiniDisc protected against accidental
erasure?
Did you try to make recording on a play- back-only MiniDisc? Can you see the "TOC FULL" message in the display?
Slide the accidental erase prevention tab back to its original position. Replace it with a recordable disc. Put in another recordable disc with recor- ding space on it.
Even though a disc has been loaded, "NO DISC" or "ERR" is displayed. Playback sounds are skipped.
The disc is very dirty. Is the unit located near excessive vibra- tions? Has condensation formed inside the unit?
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.
Tape recording and playback SYMPTOM POSSIBLE CAUSE REMEDY
A recording cannot be made. Is the tape protected against accidental
erasure? Cover the accidental erase prevention hole.
Sound is skipped. Sound in high-frequency range cannot be reproduced. Sound quivers.
The tape is damaged. The capstan and pinch roller are very dirty. Replace the tape.
Clean the capsten and pinch roller.
The cassette cannot be ejected. Did a power failure occur? Wait until the power is supplied.
Radio reception SYMPTOM POSSIBLE CAUSE REMEDY
Radios make unusual noise consecutively. The unit is placed near the TV or computer.
The aerial direction is not placed properly. When the unit receives a radio broadcast
near a TV set, a computer or a wordpro- cessor, 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 aerial direction.
The preset channel cannot be recalled. Did you erase the programmed station? Preset the channel again.
Redo programming.
Remote control SYMPTOM POSSIBLE CAUSE REMEDY
The remote control does not function or does not operate properly. The batteries (polarity) are not inserted
properly.
The batteries inside the remote control are dead. The remote control is operated from an in- correct distance or angle.
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.
The power cannot be turned on from the remote control. Is the AC power lead plugged in? Connect the AC power lead.
(Continued)
If a problem occurs
If this product is subjected to strong external interference (mechanical shock, excessive static electricity, abnormal supply voltage due to light- ning, etc.) or if it is operated incorrectly, it may malfunction or the display may not function correctly. If such a problem occurs, do the following: Connect the AC power lead to the AC socket, and press the RESET button once on the rear of the main unit.
When the RESET button is pressed, all of the contents in memory (clock and timer settings, and CD presets) other than the tuner sta- tions will be erased. If strange sounds, smells or smoke come out of the unit or if a foreign object falls into the unit, turn off the power, unplug the AC power lead from the AC socket, immediately. Contact the shop where you purchased the unit.
(Continued)
When an error message is displayed, proceed as follows:
Error messages Meaning Remedy
BLANK MD
Nothing is recorded. Replace it with another disc.
Can't COPY
You tried to record from a copy-protected disc. Replace it with a regular disc that can be copied.
Can't EDIT
A track cannot be edited. Change the stop position of the track and then try editing
it.
Can't REC
Recording cannot be performed correctly due to vibra- tion or shock in the unit. Re-record.
Can't T REC
Timer recording is impossible or there is no available space on the MD. Replace it with another disc.
CH ERROR
There is something wrong with the CD changer. Set this unit to the stand-by mode and then back to on,
and press the button.
CONNECT ERR
Whilst an MD player is being edited on this unit, incorrect digital signals are input from the portable MD player. Make sure the cable is connected correctly and that
power is being supplied to the portable MD player.
DEFECT
Since this disc has scratches on it, the recording oper- ation was skipped. Replace it with another disc.
Din UNLOCK
Incorrect digital signals are input. Connect correct digital signals.
Use the analogue input sockets.
DISC ERR
The disc is damaged. A TOC is not written on the MD or there is something wrong with data.
Reload the disc or replace it.
DISC FULL
The disc is out of recording space. Replace the disc with another recordable disc.
EDIT OVER
There is no space to make CD editing on the disc. Replace it with a disc that has enough time to record.
FOCUS ERROR
A disc has not been loaded. The disc data cannot be read. Reload the MiniDisc.
MD ERROR
No operation. Contact the shop where you purchased the unit.
MECHA ERR∗ (∗:Number or symbol)
There is a mechanical problem and the disc is not work- ing properly. Set this unit to the stand-by mode and press the but-
ton.
NAME FULL
The number of characters for the disc name or track name exceeds 100. Shorten the disc or track name.
NO DISC
A disc has not been loaded. The disc data cannot be read. Load a disc.
Reload the disc.
NOT AUDIO
The data recorded on this disc is not audio data. Select another track.
Replace the disc.
PLAYBACK MD
You tried to record on a playback-only disc. Replace it with another recordable disc.
PROTECT
Trouble is found. Restart the unit. If the unit doesn't work, contact a
SHARP Authorised Servicing Dealer or SHARP Auth- orised Service station.
PROTECTED
The disc is write protected. The tape is protected against accidental erasure. Move the write protection tab back to its original position.
Cover the accidental erase prevention hole.
TAPE ERROR
The tape mechanism is defective. Try pressing the RESET button.
TEMP OVER
The temperature is too high. Set this unit to the stand-by mode and wait for a while.
TOC ERR∗ (∗:Number or symbol)
The disc is damaged. TOC information cannot be read. MD not specified.
Replace it with another disc.
TOC FULL∗ (∗:Number or symbol)
There is no space left for recording character information (track names, disc names, etc.). Replace it with another recordable disc.
TOC W ERROR
Recording is impossible. Contact the shop where you purchased the unit.
TRAY ERROR
The CD tray operates incorrectly. Unplug the AC power lead, plug it back, and then turn
the power on.
U TOC ERR∗ (∗:Symbol)
TOC information recorded on the MD does not match the MD specifications or it cannot be read. Replace it with another disc.
Erase all of the track, and try recording.
U TOC W ERR
The TOC information could not be created properly due to a mechanical shock or to scratches on the disc. Set this unit to the stand-by mode and try to write the
TOC again. (Remove any source of shock or vibration whilst writing.)
? DISC
The data contains an error. Replace it with another disc.
00:00
Music is not being recorded. Replace the disc with another recordable disc.

MD-X60H
– 10 –
Caution on Disassembly
The disassembling the machine or assembling it after
repair, observe the following instructions so as to ensure
safety and keep its performance.
1. Unload the compact disc, and mini-disc, casette tape
from machine.
2. Be sure to unplug the power cable before starting
disasembly 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.
Ifa screwofimproper length isfitto theMDmechanism.
(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 10-1
Note 1: 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.
DISASSEMBLY
1 Cabinet 1. Screw ................ (A1) x9 10-1
2 Rear Panel 1. Screw ................ (B1) x16 10-1
(Upper,Bottom)
3 CD Changer Block 1. Screw ................ (C1) x6 11-1
2. Screw ................ (C2) x2
4 Main PWB 1. Screw ................ (D1) x3 11-1
2. Socket ............... (D2) x6
3. Flat Cable.......... (D3) x3
4. Socket ............... (D4) x2
5 Fan Motor 1. Socket ............... (E1) x1 11-2
2. Screw ................ (E2) x2
6 Power Amp. PWB 1. Socket ............... (F1) x2 11-2
2. Lug Wire ............ (F2) x1
3. Screw ................ (F3) x3
7 Fuse PWB 1. Screw ................ (G1) x2 11-2
8 MD Holder 1. Screw ................ (H1) x4 11-2,3
9 MD Unit 1. Screw ................ (J1) x2 11-3
10 Front Panel 1. Socket ............... (K1) x1 11-4
2. Screw ................ (K2) x5
11 Power PWB 1. Screw ................ (L1) x5 11-4
12 Tape Mechanism 1. Screw ................ (M1) x4 11-5
13 Tray Switch PWB 1. Screw ................ (N1) x2 11-5
2. Socket ............... (N2) x1
14 Display PWB 1. Screw ................ (P1) x9 11-5
2. Flat Cable.......... (P2) x1
15 Switch A PWB 1. Screw ................ (Q1) x2 11-5
16 Switch B PWB 1. Knob .................. (R1) x1 11-5
2. Nut ..................... (R2) x1
3. Screw ................ (R3) x5
4. Screw ................ (R4) x1
17 Jack PWB 1. Socket ............... (S1) x1 11-5
2. Screw ................ (S2) x1
18 MD Input Level PWB 1. Screw ................ (T1) x1 11-5
19 Headphone PWB 1. Screw ................ (U1) x1 11-5
STEP REMOVAL PROCEDURE FIGURE
MAIN UNIT
20 CD Mechanism 1. Screw ................ (V1) x7 12-1
2. Top Bord ........... (V2) x1
3. Disc Holder ....... (V3) x1
4. Disc Tray ........... (V4) x3
5. Screw ................ (V5) x3
6. Mechanism Holder
Guide................. (V6) x1
7.
Mechanism Holder (V7) x1
8. Screw ................ (V8) x4
21 MD Mechanism 1. Screw ................ (W1) x8 12-2
22 MD Main PWB 1. Screw ................ (X1) x4 12-3
(Note 1 ) 2. Socket ............... (X2) x5
3. Flat Cable.......... (X3) x1
23 MD Mechanism 1. Screw ................ (Y1) x4 13-1
STEP REMOVAL PROCEDURE FIGURE
(A1) x5
ø3 x8mm
(A1) x2
ø3 x8mm
(A1) x2
ø3 x8mm
(B1) x4
ø3 x8mm
(B1) x12
ø3 x8mm
Cabinet Front Panel
Rear Panel
(Upper)
Rear Panel
(Bottom)
MAIN UNIT
Cares after repairing
Aftercompletionofrepairofproductsetthefollowingshipping
mode to return.
1.MakesurethatthereisnoCDdisc,andthenpresstheVOL-
UP/CDDISC1PLAYbuttontoturnonthepower,andsetthe
TEST mode.
2.AftertheindicationofTESTENDappears,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.

– 11 –
MD-X60H
Figure 11-1
Figure 11-2
Figure 11-3
Figure 11-4
Figure 11-5
(C1) x6
(D2) x6
(D4) x2
(D3) x1
(D3) x2
(C2) x2
ø3 x10mm
(D1) x1
ø3 x10mm
(D1) x2
ø3 x10mm
Front Panel
Pull
Pull
Pull
Pull
CD Chenger
Block
Main PWB
(F3) x1
ø3 x10mm
(F1) x1
(F1) x1
(E1) x1
(E2) x2
ø3 x10mm
(G2) x2
ø3 x10mm
(H1) x1
ø3 x10mm
(H1) x2
ø3 x10mm
(F3) x2
ø3 x12mm
(F2) x1
Lug wire
Front Panel
MD Unit
MD Holder
Fuse PWB
Power Amp.
PWB
Fan Motor
(J1) x1
ø3 x10mm
(J1) x1
ø1.7 x3mm
(H1) x1
ø3 x10mm
Front Panel
MD Holder
MD Unit
(K1) x1
(L1) x1
ø3 x8mm
(K2) x2
ø3 x10mm (K2) x3
ø3 x8mm
(L1) x4
ø4 x8mm
Front Panel
Power PWB
Pull
Pull
(R1) x1
(R2) x1
(P2) x1
(N2) x1
(S1) x1
(N1) x2
ø3 x10mm
(P1) x9
ø3 x10mm
(R3) x5
ø3 x10mm
(R4) x1
ø3 x8mm
(S2) x1
ø3 x10mm
(T1) x1
ø3 x10mm
Lug Wire
(Q1) x2
ø3 x10mm
(M1) x4
ø3 x10mm
(U1) x1
ø3 x10mm
Front Panel
Washer
Pull
Pull
Display PWB
Tray Switch PWB
Switch B PWB
Headphone PWB
Switch A PWB
MD Input Level PWB
Jack PWB
Tape Mechanism

MD-X60H
– 12 –
Figure 12-1
Figure 12-2 Figure 12-3
(V1) x2
ø2 x7mm
(V5) x2
ø2 x6mm (V1) x1
ø3 x10mm
(V1) x2
ø3 x8mm
(V1) x2
ø3 x10mm
(V5) x1
ø2.6 x12mm
(V8) x4
ø2.6 x10mm
(V3) x1
(V2) x1
(V6) x1
(V7) x1
1
2
3
PWB-B8
Disc Tray 2
Disc Tray 3 Press in turns the arrow
parts, starting with the
uppermost one, to
withdraw the disc trays
Disc Tray 1
Turn clockwise the
main cam to raise the
CD mechanism up to
the uppermost position.
CD
Mechanism
Pawl
Push
.
Spring
(V4) x3
(W1) x 1
ø2 x 4mm
(W1) x 1
ø2 x 4mm
(W1) x 1
ø3 x 10mm
(W1) x 1
ø3 x 10mm
(W1) x 1
ø2 x 4mm
(W1) x 1
ø2 x 4mm
(W1) x 1
ø3 x 10mm
(W1) x 1
ø3 x 10mm
MD Unit
shield Case(Upper)
shield Case(Below)
MD Holder
MD Holder
Bracket
(X3)x1
(X2)x1
(X2)x3
(X2)x1
(X1)x4
ø1.7 x 3mm
MD Main PWB
Pull
(W4) x1
Chassis
Optical pickup
Flexible PWB
(Note 1)
(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.

– 13 –
MD-X60H
Figure 13-1
Figure 13-2 Figure 13-3
(Y1)x4
ø1.7x8.9mm
MD Mechanism
( A1 ) x1
( A2 ) x1
Woofer
Front Panel
Super Tweeter
Tweeter
Net
( A3 ) x2
ø3x10mm
( A3 ) x3
ø3x8mm
( A3 ) x1
ø3x6mm
( A3 ) x4
ø4x16mm
Woofer
Super Tweeter
Tweeter
Front Panel
1 Speaker 1. Net..................... (A1) x1 13-2
2. Front Panel ....... (A2) x1
3. Screw ................ (A3) x10 13-3
STEP REMOVAL PROCEDURE FIGURE
SPEAKER
SPEAKER

MD-X60H
– 14 –
REMOVINGAND REINSTALLING THE MAIN PARTS
MD MECHANISM SECTION
Perform steps 1 to 9,21 and 23 of the disassembly method to
remove the MD mechanism.(Refering to p.10~13)
How to remove the magnetic head
(See Fig. 14-1)
1. Remove the screws (A1) x 1 pc.
Caution:
Takeutmostcaresothatthemagneticheadisnotdamaged
when it is mounted.
How to remove the cartridge holder
(See Fig. 14-2)
1. Open the rpller arm lever in the arrow direction, and lower
the clamper lever to the rear side.
2. Apply +5V to the red line side of blue connector of loading
motor,pushtherackgearinthearrowdirectiontomovethe
cam plate lever until tick is heard.
3. Remove the screw (B1) x1 pc., and the spring (B2) x1 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. 14-3)
1.Removethescrews(C1)x2pcs.,andremovethemechanism
switch PWB.
Figure 14-1
Figure 14-2
Figure 14-3
MD Mechanism
(A1)x1
ø1.7x5mm
Magnetic Head
Slider Lever
Cartridge Holder
Clampa Lever
Lack Gear
Roller Arm Lever
Loading Motor
Cam Plate Lever
(B1) x1
Ø1.7x5mm
(B2) x1 Holder Arm
(C1)x1
Ø1.7x3mm
(C1)x1
Ø1.7x9.5mm

– 15 –
MD-X60H
Figure 15-2
Figure 15-3
How to remove the spindle motor
(See Fig. 15-2)
1. Remove the screws (E1) x 3 pcs., and remove the spidle
motor.
Caution:
Be careful so that the turntable is not damaged.
How to remove the optical pickup
(See Fig. 15-3)
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. 15-1)
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 15-1
Spindle Motor
Turntable
Gear
(E1)x3
Ø1.7x2.5mm
Optical Pickup
(F1)x3
Ø1.7x9.5mm
Gear
Sled
Motor
Loading
Motor
Gear
(D1)x2
Ø1.7x2mm (D1)x2
Ø1.7x2mm

MD-X60H
– 16 –
Figure 16-1
Figure 16-2
CD MECHANISM SECTION
For the procedure to remove the CD mechanism from the
main unit, refer to Disassembling Procedure, Steps 1~3, and
20. (p.10~12).
How to Remove the optical pickup
(See Fig. 16-1.)
1. Remove the screws (A1)x 2 pcs., to remove shaft (A2)x 1
pc.
2.Removestopwasher(A3)x1pc.,toremovegear(A4)x1pc.
3. Remove the optical pickup.
Note:
After disconnecting the optical pickup connector wrap the
front end of connector in conductive aluminum foil so as to
prevent damage to the optical pickup by static electricity.
How to Remove the tray motor/main cam motor
(See Fig. 16-2.)
1. Remove the CD changer section by the method described
in page 8, and disassemble as shown in the figure.
2. Remove the belts (B1)x 2 pcs., from the motor side.
3. Remove the screws (B2)x 4 pcs.
4. Remove the tray motor and main cam motor.
How to remove the CD disc
(When CD exists in the tray)
(See Fig. 16-4.)
1. Remove the cabinet and front panel.
2. Disassemble as shown in the figure so that the CD disc of
CD changer can be taken out.
3. Remove the CD disc from the tray as shown in the figure.
How to remove the CD disc
(When CD is in playback state)
(See Fig. 16-3.)
1. Remove the cabinet and front panel.
2. Disassemble as shown in the figure so that the CD disc of
CD changer becomes visible.
3. Remove the CD disc as shown in the figure.
Figure 16-3
Figure 16-4
(A1) x2
ø2.6 x5mm
CD
Mechanism
Stop Washer
(A3) x1
Gear
(A4) x1
Shaft
(A2) x1
Pickup
Tray Motor
Main Cam
Motor
Belt
(B1) x1 Belt
(B1) x1
(B2) x2
ø2.6 x4mm
(B2) x2
ø2.6 x4mm
CD Disc
Disc Holder
CD Changer
Block
(When CD is in playback state.)
Turn the main cam clockwise,
and raise the CD mechanism
and disc holder up to
uppermost position.
1
2
3
Disc Tray 1
Disc Holder
CD Disc
Disc Tray 2
Disc Tray 3
CD Mechanism
Press in turns the arrow
parts, starting with the
uppermost one, to
withdraw the disc trays
Turn the main cam clockwise,
and raise the CD mechanism
and disc holder up to
uppermost position.
CD Changer
Block
(When CD exists in the tray.)

– 17 –
MD-X60H
ADJUSTMENT
fL: Low-range frequency
fH: High-renge frequency
• AM adjustment and confirmation
Figure 17-1 AM IF
TUNER SECTION • TEST mode setting method
Holdingdownthe ENTERbutton andTUNER(BAND) button,
turn on the power. Frequency is set in the memory (initial
setting) as shown in Table 17. Call the setting with the
PRESET button to use it for tuner circuit adjustment or
confirmation.
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
Adjusting item Adjusting object Adjusting
method
IF Adjust the indication of Set IF wafeform
T351 set to 1,620 kHz. 450 kHz to maximum.
Frequency cover fL: T306 (522 kHz) fL: 1.1 ± 0.1 V
(VT line voltage of Adjust the indication fH: 7.3 ± 1.3 V
of pin 20 of IC302) of set to 522 kHz. (Only confirmation)
fH: (1,620 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 30 dB VR351 Input: SO301
Output: Speaker
Terminal
FM signal oscillator Frequency 400 Hz, 22.5 kHz
Adjusting object
Preset No. Frequency
Figure 17-2 FM Mute Level
Table 17 Initial setting of memory
GND
AM Loop Antenna
Loop Antenna
Electronic
voltmeter
IF : Speaker Terminal
Freqency cover: IC302,Pin 20
UNIT
FM signal oscillator
SO301
Electronic
voltmeter
Speaker
Terminal
UNIT
FM signal oscillator
1
1213
VR351
T306
T351
IC302
T302
CNP301
FE301
AM IF
20
TUNER PWB
FM Mute Level
AM Band Coverge
AM Tracking
SO301
Antenna Terminal
Figure 17-3 Adjustment Point
• Erasing the registered broadcast station
Holding down TRACK EDIT and ENTER in power-off state,
press POWER.
All the registered stations are erased.
Note:
EvenwhentheRESET switch providedatthe rear sideofthis
model, is pressed, the preset of tuner is not cleared.

MD-X60H
– 18 –
TAPE SECTION
CNP102
CNP930
VR103
VR105
VR106
VR107
CNP103
VR104
TP102
TP101
Pin 1 : R
Pin 3 : L
IC102
CNP101
VR102
VR101
CNP920
3
1
2
3
L-CH
REC FREQUENCY
R-CH
REC FREQUENCY
L-CH
PLAY SENS.
R-CH
PLAY SENS.
TAPE
SPEED
L-CH
REC SENS.
R-CH
REC SENS.
MAIN PWB
Figure 18 Adjustment Point
Play:TW-2412 120 g or more
Reverse Play:TW-2422 120 g or more
Driving Force Check
Torque Meter Specified Value
Play:TW-2111 25 to 65 g.cm
Reverse Play:TW-2121 25 to 65 g.cm
Fast forward:TW-2231 60 to 130 g.cm
Rewind:TW-2231 60 to 130 g.cm
Checking the playback/FF/rewinding torque
Torque Meter Specified Value
MTT-114 Output: L:TP102 pin 3
R:TP102 pin 1
Adjusting the record / playback head azimuth
Test Tape Instrument Connection
MTT-111 VR107 3,000±30Hz L:TP102 pin 3
R:TP102 pin 1
Tape Speed
Test Tape Adjusting Point Specified Value Instrument Connection
* Raise the cassette holder cover and remove it, and then
adjust the azimuth.
- 102±7kHz TP101(IC102 pin 3)
Checking the bias oscillation Frequency
Adjusting Point Specified Value Instrument Connection
Adjusting the deck circuit
Adjusting the mechanism
VOLUME MAX
FUNCTION TAPE
TAPE NORMAL
DOLBY NR OFF
REVERSE MODE NORMAL
BEAT SW A
Position of each swich or control
Adjusting the record/playback frequency
MTT-150 L:VR103 Standard:300mV L:TP102 pin 3
R:VR104 R:TP102 pin 1
Adjusting the playback amplifier sensitivity
Test Tape Adjusting Point
Specified Value Instrument Connection
Record level control 100mV Input:AUX
(1kHz)
UR-121 L:VR105 100mV Output
R:VR106 L:TP102 pin 3
R:TP102 pin 1
Adjusting the record/playback sensitivity
Test Tape Adjusting Point Specified Value
Instrument Connection
Record level control 10mV Input:AUX
(10kHz)
UR-121 L:VR101 10mV Output
R:VR102 L:TP102 pin 3
R:TP102 pin 1
Test Tape Adjusting Point Specified Value
Instrument Connection

– 19 –
MD-X60H
CD TEST MODE
CD test mode setting
Any one of test mode can be set by pressing several buttons as follows.
Holding down VOL-UP and CD DISC 3 PLAY, turn on POWER. TEST: CD operation test
Test Mode
Function - CD TEST mode
Setting of Test mode
Indication of CD TEST mode
OPEN/CLOSE operation is manual operation.
The pickup can be moved with the ( ) or ( ) button.
<CD MD EDIT> <TRACK> <CD-STOP>
Tracking on the spot. Tracking on the spot. STOP
SERVO ON PLAY SERVO OFF PLAY
<PLAY> button input - TOC. Initialization performed, and the ordinary PLAY is performed.
Press the <STOP> button. Stop
If the following button is pressed during PLAY, it is possible to specify directly any Track No.
<Disc 1 PLAY> button: Track 4
<Disc 2 PLAY> button: Track 9
<Disc 3 PLAY> button: Track 15
Note:
Only in STOP state it is possible to slide the pickup with the ( ) or ( ) button.
Cancel method: POWER OFF
Initialization is not performed.
CD SECTION
Since this CD system incorporates the following automatic adjusting function, when the pickup is replaced, it is not necessary
to the readjust it .
Since this CD unit does not need adjustment, the combination of PWB and laser pickup unit is not restricted.
Automatic adjustment items
1. Focus Offset (Fig. 19-1)
2. Tracking Offset (Fig. 19-2)
3. E/F Balance (Tracking Error Balance) (Fig. 19-3)
4. R/F level AGC function (HF level: Constant)
5. RF level automatic follow-up of the tracking gain
This automatic adjustment is performed each time a disc
is changed. Therefore, each disc is played back using
the optimal settings.
Figure 19-1
Figure 19-2 Figure 19-3
2
0.1s
0.50 V
IC1 20 FE
0.1s
0.50 V
IC1 7 TE
1
FOCUS
OFF-SET
ADJUST
TRACKING
OFF-SET
ADJUST
2
1
10ms
0.50 V
IC1 20 FE
10ms
0.50 V
IC1 7 TE
Enlarged
View
TRACKING
OFF-SET
ADJUST
2
1
TO
TE
200 ms
1V/diV
IC 1 15
200 ms
1V/diV
IC 1 7
TRACKING/
ERROR
BARANCE
ADJUST

MD-X60H
– 20 –
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 UDSKM0001AFZZ
3 Head Adjusting transparent RRCDT0103AFZZ
[TEAC Test MD]
4 Low reflection disc Pre-adjustment disc 88GMMD-318
Extension Cable (See Fig. 19)
Type Part No.
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
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 (p29,p30) and then perform the preliminary
adjustment and AUTO adjustment, write adjustment data in EEPROM.
Figure 20 Conection of Extention Cable
5Pin extension flat cable
QCNWK0109AFZZ
2Pin extension connector
QCNWK0059AFZZ
CN1601(Bottom side)
CN1602
CN1252
CN1603
CN1604(Bottom side) CN1101
MD MAIN PWB
6P-2P extension connector
QCNWK0107AFZZ
28Pin extension
flat cable
QCNWK0108AFZZ Extension PWB for service
(RUNTK0457AFZZ)
Fit the extension PWB for service to the mechanism
From Optical
Pickup Unit
From Magnetic Head
From
motor
From mecha-
nism switch
PWB