Sharp MDR-2-H Service manual

MD-R2H

SERVICE MANUAL

No. S0775MDR2H///

MD-R2H

• 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.

• Note for users in UK

Recording and playback of any material may require consent
which SHARP is unable to give. Please refer particularly to the
provisions of Copyright Act 1956, the Dramatic and Musical
Performers Protection Act 1956, the Perfmers Protection Acts
1963 and 1972 and to any subsequent statutory enactments and
orders.

CONTENTS

Page

SAFETY PRECATION FOR SERVICE MANUAL.................................................................................................................. 2

IMPORTANT SERVICE NOTES (FOR UK ONLY) ................................................................................................................ 3

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

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

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

DISASSEMBLY...................................................................................................................................................................... 8

REMOVING AND REINSTALLING THE MAIN PARTS....................................................................................................... 10

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

EXPLANATION OF ERROR DISPLAY................................................................................................................................ 23

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

BLOCK DIAGRAM ............................................................................................................................................................... 28

SCHEMATIC DIAGRAM/WIRING SIDE OF P.W.BOARD................................................................................................... 30

NOTES ON SCHEMATIC DIAGRAM .................................................................................................................................. 43

WAVEFORMS OF MD CIRCUIT .......................................................................................................................................... 44

TROUBLE SHOOTING ........................................................................................................................................................ 46

FUNCTION TABLE OF IC.................................................................................................................................................... 51

PARTS GUIDE/EXPLODED VIEW
PACKING METHOD (FOR UK ONLY)

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-R2H

SAFETY PRECATION FOR

SERVICE MANUAL

WARNINGS

The ael (ACCESSIBLE EMMISSION 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 turn 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 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-USE of controls or adjustments, or pereformance

of procedures other than those specified herein may result
in hazardous radiation exposure.

(For UK)

(Except for UK)

LASER KLASSE 1
LUOKAN 1 LASERLAITE
KLASS 1 LASERAPPARAT

CAUTION - INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCKS
DEFEATED . AVOID EXPOSURE TO BEAM .

VARNING - OSYNLIG LASERSTRALNING NAR DENNA DEL AR OPPNAD OCH
SPARRAR

AR URKOPPLADE . STRALEN AR FARLIG.

ADVARSEL - USYNLIG LASERSTRALING NAR DEKSEL APNES OG SIKKERHEDSLAS
BRYTES . UNNGA EKSPONERING FOR STRALEN .

VARO! AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA
NAKYMATON LASERSATEILYLLE . ALA KATSO SATEESEN .

VARNING - OSYNLIG LASERSTRALING NAR DENNA DEL AR OPPNAD OCH SPARREN
AR URKOPPLAD . BETRAKTA EJ STRALEN .

ADVARSEL - USYNLIG LASERSTRALING VED ABNING . NAR SIKKERHEDSAFBRYDERE
ER UDE AF FUNKTION . UNDGA UDSETTELSE FOR STRALING .



Laser Diode Properties

Material: GaAIAs
Wavelength: 785 nm
Pulse time: Read mode: 0.8 mW Continuous

Write mode: max 10 mW 0.5 S

min cycle 1.5 S
Repetition

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.

– 2 –

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

IMPORTANT SERVICE NOTES (FOR UK ONLY)

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.

Set name set value
Withstanding Voltage Tester
Test voltage 4,240 VPEAK

3,000 VRMS
Set time 6 secs
Set current(Cutoff current) 4 mA
Unit
Judgment
OK: The “GOOD” lamp lights.

NG: The “NG” lamp lights and the buzzor sounds.

MD-R2H

WITHSTANDING
VOLTAGE TESTER

AC

+

OUT

-

SHORT-CIRCUIT
AC POWER
SUPPLY CORD

PROBE

UNIT

CONNECT THE PROBE
TO GND TERMINAL
OF PHONO TERMINAL

SCREW

OF CHASSIS

General

SPECIFICATIONS

Type: MiniDisc deck
Signle readout: Non-contact, 3-bean semi-conductor

laser pick-up

Audio channels: Stereo 2 channels/monaural

(long-play mode) 1 channel

Frequency response: 4 - 20,000 Hz (+0/-1 dB)
Rotation speed: Approximately 400 to 900 rpm
Error correction: ACIRC (Advanced Cross Interleave

Reed-Solomon Code)

Coding: ATRAC (Adaptive TRansform

Acoustic Coding)

Recording method: Magnetic modulation overwrite

method

Input sockets

Socket

name

Socket

shape

Input

impedance

Reference
input level

Minimum

input level

LINE IN Pin socket Over 680 mVrms 170 mVrms

22 kohms

OPTICAL Square
IN (Optical)

optical
connector

COAXIAL Pin socket 75 ohms 500 mVp-p
(Coaxial)

Timer/clock

Type: Digital clock with date function
Timer: ON/OFF, once a day

A/D,D/A converter: 1-bit
Sampling frequency: 44.1kHz
Wow and flutter: Unmeasurable (less than ±0.001%

W.peek)

Signal/noise ratio: 100 dB or better during playback

(line output)

Power source: AC 230 V, 50 Hz
Power consumption: 17 W
Dimensions: Width: 430 mm (16-15/16")

Height: 93 mm (3-11/16")
Depth: 302 mm (11-15/16")

Weight: 3.6 kg (8.0 Ibs)

Output sockets

Socket

name

Socket shape

Output

level

Load

impedance

PHONES 6.3 mm (1/4") stereo 15 mV 32 ohms
(Headphones)

socket

LINE OUT Pin socket 2 Vrms 50 kohms
OPTICAL

Square optical connector

OUT (Optical)

Remote control

Power: DC 3V ("AA" (UM/SUM-3, R6,

HP-7 or similar) battery included
x 2)

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

– 3 –

MD-R2H

Front panel

NAME OF PARTS

12345 6 7

11

TOC

12
13

MONO LP PRGM RANDOM

14 1516 1817 19 20

21 22 23 24 25 26

29 30 31 32 33 34 35 36 37

1. TOC Indicator: TOC

2. Total Time Indicator

3. Disc Name Indicator

4. Track Name Indicator

5. Data Indicator

6. Level Meter/Character Information Display

7. Recording Level indicator

8. Recording Level Too High Indicator

9. Music Calender

10. More Tracks Indcator

11. Pause Indicator:

12. Record Indicator:

13. Play Indicator:

14. Monaural Long-Play Mode Indicator

15. Programme Indicator

16. Repeat Indicator:

17. Remaining Time Indicator

18. Random Play Indivator

19. Timer Playback/Timer recording Indicator

TOTAL
REMAIN

TRACK

DATE

TIMER REC CLOCK

12

4 0dB OVERDISC

1 2 3 4 5 6 7

AM

8 9 10 11 12 13

PM

15 16 17 18 19 20

14

20. Clock Indicator

21. Eject Button:

22. Remote Sensor

23. Cue/Review Button:

24. Display/Character Button

25. Name/TOC Edit Button

26. Record Level Control

27. Headphone Level Control

28. Headphone Socket

29. On/Stand-by Button

30. Stop Button:

31. Play/Pause Button:

32. Record Button:

33. Input Select Button

34. Programme Button

35. Jog Dial (Next/Previous)

36. Enter Button

37. Delete/Clear/Timer Button

8
9

10

27
28

Rear panel

1. AC Power Lead

2. Coaxial Input Socket
(Digiral)

3. Optical Input/Output Sockets
(Digital)

4. Line Input/Output Sockets
(Analogue)

5. Reset Button

12345

– 4 –

MD-R2H

SETTING THE CLOCK

When recording, the date and time are recorded on the Minidisc.

Setting the date

1

Press the ON/STAND-BY button to turn the power on and

press the TIMER button.

2

Within 10 seconds, turn the jog dial until “TIME ADJUST”

appears.

3

Within 10 seconds, press the ENTER button.

The unit will enter the date setting mode.

4

Set the “year” using the jog dial.

When you turn the jog dial and let go, the year will change

up or down by one.

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.

5

Press the ENTER button to set the “year”.

6

Set the “month” repeating steps 4 and 5.

7

Set the “day” repeating steps 4 and 5.

The unit will enter the time setting mode.

ENTER

DELETE/CLEAR

TIMER

ON/

STAND-BY

DATE

CLOCK

CLOCK

CLOCK

7

6

5

4

3

2

1

Date setting mode

Each time the button is pressed,

the display will change.

Time setting mode

Names of controls

1. Remote Control Transmitter Window

2. Direct Key Buttons

3. Play Mode Button

4. Music Scan Button

5. Input Select Button

6. Display Button

7. Time Button

8. Auto Mark Button

9. Track Down/Review Button:

10. Track Up/Cue Button:

11. On/Stand-by Button

12. Programme Button

13. Clear Button

14. Synchro Record Button:

15. Record Cancel Button

16. Record Mode Button

17. Record Button:

18. Play/Pause Button:

19. Stop Button:

10
11

1

2
3

4
5
6
7
8
9

12
13
14
15
16
17
18
19

OPERATION MANUAL

– 5 –

MD-R2H

(Continued)

Setting the time

After step 7, described in the “Setting the date” section

8

Set 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.

The clock uses the 24-hour system.

9

Press the ENTER button to set the “hour”.

10

Adjust the “minute” using the jog dial.

11

Press the ENTER button to set the “minute”.

When the ENTER button is pressed, the clock will show the

correct time.

Checking the date and time

After pressing the TIMER button, turn the jog dial until the date

and time are displayed.

Resetting the date and time

See “Setting the clock”.

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.

DELETE/CLEAR

TIMER

ENTER

DATE

CLOCK

DATE

CLOCK

DATE

CLOCK

DATE

CLOCK

8

9

10

11

SYMPTOM POSSIBLE CAUSE REMEDY

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, turn off the player's power 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.

Turn the power off and on again, and

then retry the operation.

Radios make unusual noise or the pic-

ture 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

outdoor aerial.

Audio

A recording cannot be made. Is the MiniDisc protected against ac-

cidental erasure?

Slide the accidental erase prevention

tab back to its original position.

Did you try to make recording on a

playback-only MiniDisc?

Replace it with a recordable disc.

Can you see the “TOC FULL” mess-

age in the display?

Put in another recordable disc with

recording space on it.

Even though a disc has been loaded,

“NO DISC” or “Error” is displayed.

Is the disc scratched?

Is the unit located near excessive vi-

bration?

Replace the disc.

Place the unit on a firm, level surface

free from vibration.

Playback stops in the middle of a

track, or playback is not performed

properly.

Is the unit located near excessive vi-

brations?

Place the unit on a firm, level surface

free from vibration.

Playback sounds are skipped.

Has condensation formed inside the

unit?

Remove the disc and leave the power

turned on. The unit should function

properly in about 1 hour.

Remote control

SYMPTOM POSSIBLE CAUSE REMEDY

The remote control does not function

or does not operate properly.

The batteries (polarity) are not inserted

properly.

Insert properly.

The batteries inside the remote control

are dead.

Replace the batteries.

The remote control is operated from

an incorrect distance or angle.

Operate it within a range of 0.2 m (8")

to 6 m (20') and within an angle of 15

o

to either side of centre.

No disc has been loaded. Load a disc.

The power cannot be turned on from

the remote control.

Is the AC power lead plugged in? Connect the AC power lead.

– 6 –

MD-R2H

(Continued)

Moisture condensation

In the following cases, condensation may form inside

the unit.

Shortly after turning on a heater.

When the unit is placed in a room where there is ex-

cessive steam or moisture.

When the unit is moved from a cool place to a warm

place.

When the unit has condensation inside, the disc signals

cannot be read, and the product may not function

properly.

If this happens, remove the disc, and open the disc

holder. The condensation should evaporate in approxi-

mately 1 hour. The unit will then function properly.

If a problem occurs

If this product is subjected to strong external inter-

ference (mechanical shock, excessive static electricity,

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 problem occurs,

do the following:

Unplug the AC power lead from the AC socket.

Wait about 20 - 30 seconds and then plug the AC power

lead back into the AC socket.

Press the reset button on the back of the unit.

When the reset button is pressed, all of the settings in

memory 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, immedi-

ately. Contact the shop where you purchased the unit.

If a power failure occurs during recording

If the AC power plug is disconnected from the AC socket

or a power failure occurs during recording (before the

TOC information has been recorded on the disc), the

audio portion being recorded at that time will be erased.

When a recording is being added to a MiniDisc which

already has a recording on it, if the TOC is not updated

before the power failure, the added recording will be

erased.

If a power failure occurs or the AC power lead is dis-

connected for about 10 minutes, when power is restored,

the TOC will be written on the disc.

RESET

Pen, pencil, etc.

REMOTE CONTROL

Proper use of the remote control

Aim the remote control at the remote control sensor within 30

o

with no obstacles, and operate as shown.

Notes concerning use:

Replace the batteries if the control distance decreases or

operation becomes erratic.

Periodically clean the transmitter window on the remote

control and the sensor on the main unit with a soft cloth.

Exposing the sensor on the main unit to strong light can

interfere with operation. Change the lighting or the direction

of the unit.

Keep the remote control away from moisture, excessive heat,

shock, and vibrations.

The remote control's usable range is between 0.2 m (8") and

6 m (20') away from the sensor.

15

15

0.2 - 6m (8" - 20')

1

2

3

(Continued)

When an error message is displayed, proceed as follows:

Error messages Meaning Remedy

BLANK MD Nothing is recorded.

(Neither music nor a disc name have been

recorded on this MD.)

Replace the disc with a recorded disc.

Can't COPY You tried to record from a disc which you are

not allowed to copy.

Replace it with another disc which you can

copy from (regular CD).

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

vibration.

Move the unit away from the source of vibration.

DEFECT Since this disc has scratches on it, the

recording operation was skipped.

Replace the disc with another recordable disc.

Din UNLOCK Incorrect digital signals are input. Connect correct digital signals.

Use the analogue input socket.

DISC ERR The disc is damaged or there is no TOC on the

disc.

Reload the disc or replace it.

DISC FULL The disc is out of recording space. Replace the disc with another recordable disc.

FOCUS ERROR The proper focus cannot be obtained. Reload the MiniDisc.

MD ERROR The unit has determined that it is out of order

by performing a self-diagnosis.

Ask the store where you purchased this unit,

about repairs.

MECHA ERR* There is a mechanical problem and the disc is

not working properly.

Press the ON/STAND-BY button to enter the

stand-by mode, and press the button.

NAME FULL The number of characters for the disc name or

track name exceeds 100.

Shorten the disc or track name.

NO DISC A MiniDisc has not been loaded.

The MiniDisc data cannot be read.

Load a MiniDisc.

Reload the MiniDisc.

NOT AUDIO The data recorded on this disc is not audio data. Select another track.

Replace the MiniDisc.

PLAYBACK MD You tried to record on a playback-only disc.

The data of disc names and track names are

not able to move from playback-only discs.

Replace it with a recordable MiniDisc.

Edit only the sound.

PROTECTED The MiniDisc is write protected. Move the write protection tab back to its original

position.

TEMP OVER The temperature is too high. Press the ON/STAND-BY button to enter the

stand-by mode, and wait for a while.

TOC ERR* The disc has a large amount of damage.

TOC information cannot be read.

The MD does not meet the specifications for

MDs.

Replace the disc with another disc.

TOC FULL* There is no space left for recording character

information (track names, disc names, etc.)

Replace it with another recordable disc.

TOC W ERROR The unit has determined that it is abnormal by

performing a self-diagnosis.

Ask the store where you purchased this unit,

about repairs.

U TOC ERR* The TOC information on this disc does not

meet the MD specifications or it cannot be read.

Replace it with another disc.

Erase all the data, 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.

Press the ON/STAND-BY button to enter 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 the disc with another disc.

0 0:00 Music is not being recorded. Replace the disc with a recorded disc.

*: Number or symbol

– 7 –

MD-R2H

DISASSEMBLY

Caution on Disassembly

Follow the below-mentioned notes when disassembling
the unit and reassembling it, to keep it safe and ensure
excellent performance:

1. Take the minidisc out of the unit.

2. When disassembling the machine, be sure to withdraw
the power plug from the socket in advance.

3. When disassemble the parts, remove the nylon band or
wire holder as necessary.

To assemble after repair, be sure to arrange the wires as

they were.

If a screw of different length is fitted to the MD mecha-

nism (the screw of the part to be fitted to the MD
mechanism chassis), it may contact the optical pickup,
resulting in malfunction.

4. When repairing, pay due attention to electrostatic charges
of IC.

STEP

10 MD Mechanism 1. Screw .....................(K1) x4 8-4

11 MD Main PWB 1. Screw ..................... (L1) x2 9-1

12 MD Mechanism 1. Screw .................... (M1) x4 9-2

REMOVAL

1 Top Cabinet 1. Screw .....................(A1) x5 8-1

2 Rear Panel 1. Screw ..................... (B1) x5 8-2

3 MD Unit 1. Screw .................... (C1) x4 8-2

4 Front Panel 1. Screw .................... (D1) x5 8-2

5 Main PWB 1. Screw ..................... (E1) x6 8-2

(with Transformer)

6 Jog Dial 1. Knob ....................... (F1) x1 8-3

7 Display PWB 1. Screw .................. (G1) x10 8-3

8

Headphones PWB

9 Switch PWB 1. Screw ..................... (J1) x5 8-3

Unit

PROCEDURE

2. Flat Cable ...............(C2) x1

3. Socket .................. (C3) x1

2. Flat Cable ...............(D2) x1

3. Socket ................... (D3) x1

2. Nut .......................... (F2) x1

2. Knob ...................... (G2) x2

3. Socket ................... (G3) x1

1. Screw .................... (H1) x1 8-3

2. Socket .................... (L2) x6

FIGURE

Washer
(D1)x1
ø3x8mm

Main PWB

(B1)x5
ø3x10mm

(H1)x1
ø3x10mm

(E1)x2
ø4x8mm

Headphone
PWB

(E1)x3
ø3x10mm

(D2)x1

(D3)x1

Rear Panel

(E1)x1
ø3x10mm

Front Panel

Figure 8-2

(G2)x2

(F2)x1

washer

(G1)x10
ø3x10mm

Figure 8-3

(C1)x4

(C2)x1

(C3)x1

ø3x6mm

MD Unit

(F1)x1

Display PWB

(J1)x5
ø3x10mm

Shield Case

(D1)x1
ø3x8mm

(D1)x3
ø3x8mm

(G3)x1

Switch PWB

Front
Panel

(A1)x3
ø3x10mm

(A1)x1
ø3x10mm

Top Cabinet

Figure 8-1

(A1)x1
ø3x10mm

– 8 –

(K1) x 2
ø3 x 6mm

MD Mechanism
Unit

(K1) x 2
ø3 x 6mm

Figure 8-4

MD-R2H

Pickup Flexible
PWB (*1)

Pull

(L2)x1

(*1) After disconnecting the optical
 pickup flex PWB from the
 connector wrap the front end of
 flex PWB in conductive aluminium
 foil so as to prevent electrostatic
 damage of optical pickup.

MD Main PWB

Figure 9-1

( L2 ) x 1

( L2 ) x 3

( L1 ) x 4
ø1.7 x 3mm

( L2 ) x 1

Frame

MD Mechanism

(M1)x4
ø1.7x8.9mm

Figure 9-2

• Jog knob replacement procedure

Jog Decoration

Jog Knob

Figure 9-3

Display PWB

Front Panel

Jog Decoration

Jog Knob

Remove the pawl of jog decoration
with fine piece such as tweezers, 
press, and remove the jog knob with
jog decoration.

Display PWB

FL Window

Figure 9-4

Remove the pawl of jog decoration with fine piece
such as tweezers, press, and remove the jog knob
with jog decoration.

Figure 9-5

– 9 –

MD-R2H

REMOVING AND REINSTALLING THE MAIN PARTS

MD MECHANISM SECTION

Perform steps 1 to 3 of the disassembly method to remove the
MD mechanism.

(A1)x1
ø1.7x5mm

How to remove the magnetic head
(See Fig. 10-1)

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

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

How to remove the cartridge holder
(See Fig. 10-2)

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, push the rack gear in the arrow direction to move the
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.

MD Mechanism

Loading Motor

Clampa Lever

Figure 10-1

Slider Lever

Roller Arm Lever

Magnetic Head

Cartridge Holder

(B1) x1
Ø1.7x5mm

How to remove the mechanism switch PWB
(See Fig. 10-3)

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

Lack Gear

Cam Plate Lever

Figure 10-2

(C1)x1
Ø1.7x3mm

(B2) x1

(C1)x1
Ø1.7x9.5mm

MD Mechanism
Switch PWB

– 10 –

Figure 10-3

How to remove the sled motor/loading motor
(See Fig. 11-1)

1. Remove the screws (D1) x 1 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.)

(D1)x2
Ø1.7x2mm

MD-R2H

(D1)x2
Ø1.7x2mm

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

1. Remove the screws (E1) x 3 pcs., and remove the spidle
motor.

Caution:

Be careful so that the turntable is not damaged.

Loading
Motor

Turntable

(E1)x3
Ø1.7x2.5mm

Sled Motor

Figure 11-1

Spindle Motor

How to remove the optical pickup
(See Fig. 11-3)

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.)

Figure 11-2

(F1)x3
Ø1.7x9.5mm

Optical Pickup

Figure 11-3

– 11 –

MD-R2H

ADJUSTMENT

TEST MODE

1) Mode there are 5 kinds TEST MODE as below.

MODE PUSH KEY

A) MD TEST MODE ENTER PLAY
B) AUDIO TEST MODE CUE REVIEW
C) KEY TEST MODE CUE ENTER
D) RECORDING TEST MODE ENTER REC
E) MD TEST2 MODE (DATA MONITOR MODE) ENTER STOP

2) How to start and quit TEST MODE.
AC Supply On or push RESET KEY after push two keys.
In all TEST MODE. Power Off (POWER KEY) is quit TEST MODE.

3) TEST MODE description.

A) MD TEST MODE (ENTER+PLAY)

Disp. Will be "AUT YOBI". In this mode push PLAY KEY in mean product alignment's auto adjust mode.
(Disp. Will be "AUTO AJST". In this mode push PLAY KEY in mean auto adjust mode by disc condition.
Then push PLAY KEY again. It start play and display will be "a__C__". The 4 digits after "a" are address.
After "C" are error rate.)

PUSH KEY NAME ACTION

ENTER Servo adjust mode or menu from adjust mode.
TIMER REC. and P.B. mode or to menu from REC.mode.
NAME Other menu select.
REC Reverse menu select.
PLAY Selected menu execution.
STOP Execute stop.
CUE Slide motor (PIC) move to out-side.
REVIEW Slide motor (PIC) move to in-side.
JOG. UP *1 Manual alignment +1, loading motor on (OUT).
JOG. DOWN *1 Manual alignment -1, loading motor on (IN).
POWER Test mode quit and power off.
EJECT Disc eject.

*1. Jog. Up/Jog. Down key effect for loading motor control when display panel "tsm____e__". (Push STOP KEY some times

to disp. "tsm____e__".)

NOTE. MD test are necessary mode only for MD Unit.
B) Audio test mode (CUE+REVIEW)

This mode is key examination mode for a set with in MD-unit.
Automatically set recording mode.
Digital opt. Digital coax and analog are effective.
Test mode start is REC KEY push after disc toc. Read.

REC KEY push

1) Record form analog function by 3 sec time.

2) Record form digital opt. Function by 3 sec time.

3) Record from digital coax. Function by 3 sec time.

4) Record stop.

Note. 1) If digital function is din unclock. Skip to follwing next function.

2) Digital synchronize level is -50 dB.
Analog synchronize level is -47 dB.

C) Key test mode (CUE+ENTER)

This mode is key examination mode for a set with out MD-unit.
This mode indicate destination as below dot display.

– 12 –

KEY TEST

KEY NAME ILLUMINATE

SEGMENT

TIMER 10 ROW DOT INPUT SELECT TOC
DISPLAY 11 ROW DOT EJECT 7 ROW DOT
REVIEW ALL PLAY 4 ROW DOT
CUE PM STOP 5 ROW DOT
ENTER 8 ROW DOT REC 6 ROW DOT
JOG. UP 17 (M.C.) NAME 9 ROW DOT
JOG. DOWN 18 (M.C.) TIME AM
PROGRAM PRGM

KEY NAME ILLUMINATE

SEGMENT

D) Recording test mode (ENTER+REC)

This mode is auto recording repeat mode.
After disc full. Erase all and rec start again.

MD SECTION

1. Preparation for adjustment

Test disc

Type

1 High reflection disc TGYS1 (SONY) RRCDT0101AFZZ
2 Low reflection disc Recording minidisc UDSKM0001AFZZ
3 Head Adjusting transparent RRCDT0103AFZZ

Extension Cable (See Fig. 26-4)

Type

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

2. Test mode

Test mode setting method

1. Holding down the ENTER button and MD (PLAY/PAUSE) button, press the RESET button.
(State A is changed to state B .)

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

Test disc Part No.

Part No.

MD-R2H

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

TEST STOP state (When the MD (STOP) button is ressed in the C state, the indication A

is restored. To restore C again, press the ENTER button.)

B EJECT

TEST

C AUTO

TEST

Entering the specific mode

Whenever the CD (PLAY/PAUSE) button is pressed, the mode is changed.

AUTO pre-adjustment AUTO adjustment RESULT SUB RESULT

EEPROM setting MANUAL adjustment MANUAL pre-adjustment

• Canceling the test mode

When the POWER button is pressed, the test mode is canceled, and the POWER OFF state is set.

– 13 –

MD-R2H

• Test Mode

1. AUTO pre-adjustment mode • Automatic pre-adjustment is performed. (After adjustment the grating adjustment mode is set.)

2. AUTO adjustment mode • Automatic adjustment is performed.

3. RESULT sub-mode • The measurement value, set value and calculated value are indicated.

4. RESULT mode (final adjustment) • The set value (after calculation) is indicated.

5. MANUAL pre-adjustment mode • RF side manual adjustment is performed.

6. MANUAL adjustment mode • Focus and tracking signal ATT manual adjustment is performed.

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

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

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

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

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

• The adjustment value is output with the aid of system controller interface.

• The adjustment value is output with the aid of system controller interface.

• Continuous playback is performed. (Error rate indication, jump test)

• The set value is changed manually (in servo OFF state).

• The set value is changed manually (in servo OFF state).

• Focus and tracking signal ATT manual adjustment is performed.

• Focus and tracking signal offset setting is performed.

• Each servo is set to ON individually.

• Temperature detection terminal voltage is measured, and the reference value is determined.

• C1 error rate measurement, ADIP error rate measurement.

• Change of record laser output (servo gain is also changed according to laser output)

• CONTROL setting (of EEPROM setting)

• Setting of laser power (record/playback power)

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

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2 Press once the ENTER button. AUTO pre-adjustment menu [ A U T O ]
Step 3 Press once the MD PLAY button. The slide moves to the innermost periphery, and automatic [ : _ _ _ _ _ _ ]

End of adjustment If adjustment is OK, Step 4.

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

adjustment value output
Press once the MD STOP button. STEP 2

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

Press once the MD STOP button. STEP 2 AUTO pre-adjustment menu

Setting Method

Remarks Display

pre-adjustment is started.

• During automatic adjustment changes as follows.
HAo→RFg→SAg→SBg→PTG→PCH→GTG→GCH→RCG→
SEG→RFG→SAG→HAO→HEO→TCO→LAO

If adjustment is NG, Step 5.

• : Adjustment name, : Address

– 14 –

MD-R2H

2. AUTO adjustment mode

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. The slide moves to the innermost periphery, and automatic [ : _ _ _ _ _ _ ]

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

Step 5 Continuous playback (pit section) [ s c ]

Step 6 Press the DISPLAY button. Continuous playback (groove section) [ a a ]

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

Press the ENTER button two times.

End of adjustment If adjustment is OK, Step 4.

Press the MD PLAY button. STEP 5
Press the MD STOP button. STEP 2

Continuous playback (groove section)

Press the MD STOP button. STEP 2 AUTO adjustment menu

Press the MD STOP button. STEP 2 AUTO adjustment menu

• : Adjustment name, : Measurement value, : Address

Setting Method

Remarks Display

AUTO adjustment menu [ A U T O _ A J S T _ ]

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 ]

3. RESULT sub-mode

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Indication of measurement value [ R F G : _ _ _ ]
Step 4 Press once the ENTER button. Indication of measurement value [ R C G : _ _ _ ]
Step 5 Press once the ENTER button. Indication of measurement value [ R T G : _ _ _ _ _ ]
Step 6 Press once the ENTER button. Indication of measurement value [ G T G : _ _ _ _ _ ]
Step 7 Press once the ENTER button. Indication of measurement value [ P C H : _ _ _ _ ]
Step 8 Press once the ENTER button. Indication of measurement value [ G C H : _ _ _ _ ]
Step 9 Press once the ENTER button. Indication of measurement value [ S A G : _ _ _ ]
Step 10 Press once the ENTER button. Indication of measurement value [ S B G : _ _ _ ]
Step 11 Press once the ENTER button. Indication of measurement value [ S E G : _ _ _ ]
Step 12 Press once the ENTER button. Indication of measurement value [ S F G : _ _ _ ]
Step 13 Press once the ENTER button. Indication of measurement value [ H A O : _ _ _]
Step 14 Press once the ENTER button. Indication of measurement value [ H B O : _ _ _]
Step 15 Press once the ENTER button. Indication of measurement value [ H E O : _ _ _]
Step 16 Press once the ENTER button. Indication of measurement value [ H F O : _ _ _]
Step 17 Press once the ENTER button. Indication of measurement value [ L A O : _ _ _]
Step 18 Press once the ENTER button. Indication of measurement value [ L B O : _ _ _]
Step 19 Press once the ENTER button. Indication of measurement value [ L E O : _ _ _]
Step 20 Press once the ENTER button. Indication of measurement value [ L F O : _ _ _]
Step 21 Press once the ENTER button. Indication of measurement value [ T C O : _ _ _ _]
Step 22 Press once the ENTER button. Indication of adjustment error sequence No. [ Y O B : _ _ _ _]
Step 23 Press once the ENTER button. Indication of adjustment status [ D I F : _ _ _ _]
Step 24 Press once the ENTER button. Indication of pre-adjustment not completed (00)/completed (4B) [ A D J : _ _ _ _]
Step 25 Press once the MD STOP button. RESULT sub-menu state [ _ R S T _ Y O B I _ ]

: Measurement value, : Adjustment value, : Other various informations

•

• ressing the REC button causes reversing.

• When the jog key is turned upward while the setting is displayed, the setting increases, and a new setting is stored in RAM.

• When the jog key is turned downward while the setting is displayed, the setting increases, and a new setting is stored in RAM.

Press the ENTER button three times.

Setting Method

Remarks Display

RESULT sub-menu [ _ R S T _ Y O B I _ ]

– 15 –

MD-R2H

3. RESULT mode (final adjustment)

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Indication of set value [ H A G : _ _ _ ]
Step 4 Press once the ENTER button. Indication of set value [ H B G : _ _ _ ]
Step 5 Press once the ENTER button. Indication of set value [ L A G : _ _ _ ]
Step 6 Press once the ENTER button. Indication of set value [ L B G : _ _ _ ]
Step 7 Press once the ENTER button. Indication of set value [ P E G : _ _ _ ]
Step 8 Press once the ENTER button. Indication of set value [ P F G : _ _ _ ]
Step 9 Press once the ENTER button. Indication of set value [ G E G : _ _ _ ]
Step 10 Press once the ENTER button. Indication of set value [ G F G : _ _ _ ]
Step 11 Press once the ENTER button. Indication of set value [ G C G : _ _ _ _ ]
Step 12 Press once the MD STOP button. RESULT menu state [ _ R E S U L T _ _ _ ]

• : Measurement value

• ressing the REC button causes reversing.

• When the jog key is turned upward while the setting is displayed, the setting increases, and a new setting is stored in RAM.

• When the jog key is turned downward while the setting is displayed, the setting increases, and a new setting is stored in RAM.

Press the ENTER button four times.

Setting Method

Remarks Display

RESULT menu [ _ R S T U L T _ _ _ ]

5. MANUAL auxiliary adjustment mode (only low reflection disc)

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Initial setting → Temperature measuring mode [ T M P : _ _ _ _ ]
Step 4 Press once the ENTER button. Offset "0" setting → A signal offset tentative measurement [ H A o : _ _ _ ]
Step 5 Press once the ENTER button. B signal offset tentative measurement [ H B o : _ _ _ ]
Step 6 Press once the ENTER button. E signal offset tentative measurement [ H E o : _ _ _ ]
Step 7 Press once the ENTER button. F signal offset tentative measurement [ H F o : _ _ _ ]
Step 8 Press once the ENTER button. Offset tentative measurement → Laser ON [ L O N : _ _ _ _ _ _ ]
Step 9 Press once the ENTER button. Innermost periphery move → RF side FG rough adjustment [ R F g : _ _ ]
Step 10 Press once the ENTER button. Focus ATT (A signal) tentative setting [ S A g : ]
Step 11 Press once the ENTER button. Focus ATT (B signal) tentative setting [ S B g : ]
Step 12 Press once the ENTER button. RF side pit section TG adjustment [ P T G : _ _ ]
Step 13 Press once the ENTER button. Pit section COUT level setting [ P C H : _ ]
Step 14 Press once the ENTER button. Outer periphery move → RF side groove TG adjustment [ G T G : _ _ ]
Step 15 Press once the ENTER button. Groove section COUT level setting [ G C H : _ ]
Step 16 Press once the ENTER button. RF side TCRS adjustment [ R C G : _ _ ]
Step 17 Press once the ENTER button. Tracking ATT (A signal) setting [ S E G : ]
Step 18 Press once the ENTER button. Tracking ATT (B signal) setting [ S F G : ]
Step 19 Press once the ENTER button. Indication of tracking EFMIO measurement [ g M I : _ _ _ ]
Step 20 Press once the ENTER button. RF side pit section FG adjustment [R F G : _ _ ]
Step 21 Press once the ENTER button. Focus ATT (A signal) setting [ S A G : ]
Step 22 Press once the ENTER button. Focus ATT (B signal) setting [ S B G : ]
Step 23 Press once the ENTER button. Offset "0" setting → A signal offset measurement [ H A O : _ _ _ ]
Step 24 Press once the ENTER button. B signal offset measurement [ H B O : _ _ _ ]
Step 25 Press once the ENTER button. E signal offset measurement [ H E O : _ _ _ ]
Step 26 Press once the ENTER button. F signal offset measurement [ H F O : _ _ _ ]
Step 27 Press once the ENTER button. TCRS signal offset measurement [ T C O : _ _ _ ]
Step 28 Press once the ENTER button. A signal offset measurement [ L A O : _ _ _ ]
Step 29 Press once the ENTER button. B signal offset measurement [ L B O : _ _ _ ]
Step 30 Press once the ENTER button. E signal offset measurement [ L E O : _ _ _ ]
Step 31 Press once the ENTER button. F signal offset measurement [ L F O : _ _ _ ]

•

Press the ENTER button five times.

: Measurement value, : Set value, : Account value

Setting Method

Remarks Display

MANUAL auxiliary adjustment mode [ _ M N U _ Y O B I _ ]

– 16 –

MD-R2H

• If the jog key upward/downward is pressed during setting indication, the setting increases/decreases, and the new setting is stored in RAM.

• If the REC button is pressed, the setting returns step by step excepting the following case.

A signal offset (HAO) → Offset tentative setting → RF side FG adjustment (RFG)
RF side TCRS adjustment (RCG) → RF side groove TG adjustment (GTG)
RF side groove TG adjustment (GTG) → Innermost periphery move → RF side pit section adjustment (PTG)
RF side pit TG adjustment (PTG) → RF side FG rough adjustment (RFg) → Laser lighting (LON)
Laser lighting (LON) → Offset "0" setting → A signal offset tentative measurement (HAo)
If the measurement value is within the OK range, "

6. MANUAL adjustment mode

High reflection disc

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Initial setting → Temperature measuring mode [ T M P : _ _ _ _ ]
Step 4 Press once the ENTER button. Laser ON [ L O N : _ _ _ _ _ _ ]
Step 5 Press once the ENTER button. Innermost periphery move → Tracking ATT (E signal) setting [ P E G : ]
Step 6 Press once the ENTER button. Tracking ATT (F signal) setting [ P F G : ]
Step 7 Press once the ENTER button. Indication of tracking EFMIO measurement [ P M I : _ _ _ ]
Step 8 Press once the ENTER button. Focus ATT (A signal) setting [ H A G : ]
Step 9 Press once the ENTER button. Focus ATT (B signal) setting [ H B G : ]

• If the MD STOP button is pressed while the MANUAL adjustment menu is displayed, the state is changed to the TEST mode STOP

state.

• If the REC button is pressed, the setting returns step.

Press the ENTER button six times.

Setting Method

High reflection disc

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Initial setting → Temperature measuring mode [ T M P : _ _ _ _ ]
Step 4 Press once the ENTER button. Laser ON [ L O N : _ _ _ _ _ _ ]
Step 5 Press once the ENTER button. Innermost periphery move → Tracking ATT (E signal) setting [ P E G : ]
Step 6 Press once the ENTER button. Tracking ATT (F signal) setting [ P F G : ]
Step 7 Press once the ENTER button. Indication of tracking EFMIO measurement (pit section) [ P M I : _ _ _ ]
Step 8 Press once the ENTER button. Focus ATT (A signal) setting [ L A g : ]
Step 9 Press once the ENTER button. Focus ATT (B signal) setting [ L B g : ]
Step 10 Press once the ENTER button. Outside periphery move → Track closs setting [ G C G : ]
Step 11 Press once the ENTER button. Tracking ATT (E signal) setting [ G E G : ]
Step 12 Press once the ENTER button. Tracking ATT (F signal) setting [ P F G : ]
Step 13 Press once the ENTER button. Indication of tracking EFMIO measurement (groove section) [ G M I : _ _ _ ]
Step 14 Press once the ENTER button. Focus ATT (A signal) setting [ L A G : ]
Step 15 Press once the ENTER button. Focus ATT (B signal) setting [ L B G : ]

• If the MD STOP button is pressed while the MANUAL adjustment menu is displayed, the state is changed to the TEST mode STOP

state.

• If the REC button is pressed, the setting returns step by step excepting the following case.

Press the ENTER button six times.

Setting Method

Track closs ATT setting (GTG) → Innermost periphery move → Focus ATT (B signal) setting (LBg)

" appears on the 8th character.

Remarks Display

MANUAL adjustment menu [ _ M N U _ A J S T _ ]

Remarks Display

MANUAL adjustment menu [ _ M N U _ A J S T _ ]

7. EEPROM setting mode

a) Focus setting

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Focus setting menu [ _ _ F o c u s _ _ _ ]
Step 4 Press once the ENTER button. Focus system loop filter gain constant setting [ F G _ _ _ _ _ _ ]
Step 5 Press once the ENTER button. Focus system loop filter f characteristic constant 1 setting [ F F 1 _ _ _ _ _ ]
Step 6 Press once the ENTER button. Focus system loop filter f characteristic constant 2 setting [ F F 2 _ _ _ _ _ ]
Step 7 Press once the ENTER button. FZC oscillation histerisis level setting a [ F Z H L E V _ _ ]
Step 8 Press once the ENTER button. Comparison level setting (normal) in case of FOK generation [ F O K L E V n _ ]

Press the ENTER button seventimes.

Setting Method

Remarks Display

EEPROM setting menu [E E P R O M _ S E T]

– 17 –

MD-R2H

Step No.

Step 9 Press once the ENTER button. Comparison level setting in case of FOK generation [ F O K L E V f _ ]

Step 10 Press once the ENTER button. LPF coefficient setting (normal) in case of FOK generation [ F O K L P F n _ ]
Step 11 Press once the ENTER button. LPF coefficient setting in case of FOK generation [ F O K L P F f _ ]

Step 12 Press once the ENTER button. Waiting time setting in case of auto-focus retraction [ W A I T f_ _ _ ]

: Setting volue

•

• Pressing the REC button causes reversing.

• When the jog key is turned upward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

• When the jog key is turned downward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

Setting Method

Remarks Display

(when focus is "ON")

(when focus is "ON")

b) Spindle setting

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Focus setting menu [ _ _ F o c u s _ _ _ ]
Step 4 Press once the ENTER button. Spindle setting menu [ _ S p i n d l e _ _ ]
Step 5 Press once the ENTER button. Spindle system loop filter gain constant setting [ S P G _ _ _ _ _ ]

Step 6 Press once the ENTER button. Spindle system loop filter gain constant setting [ S P G _ i n _ _ ]

Step 7 Press once the ENTER button. Spindle system loop filter gain constant setting [ S P G _ m i d _ ]

Step 8 Press once the ENTER button. Spindle system loop filter gain constant setting [ S P G _ o u t _ ]

Step 9 Press once the ENTER button. Spindle system loop filter f characteristic constant 1 setting [ S P 1 _ _ _ _ _ ]
Step 10 Press once the ENTER button. Spindle system loop filter f characteristic constant 2 setting [ S P 2 _ _ _ _ _ ]
Step 11 Press once the ENTER button. Spindle system loop filter f characteristic constant 3 setting [ S P 3 _ _ _ _ _ ]
Step 12 Press once the ENTER button. Spindle system loop filter f characteristic constant 4 setting [ S P 4 _ _ _ _ _ ]
Step 13 Press once the ENTER button. Spindle system loop filter f characteristic constant 5 setting [ S P 5 _ _ _ _ _ ]
Step 14 Press once the ENTER button. Spindle drive output limitter setting [ S P D L I M _ _ ]

• : Setting volue

• Pressing the REC button causes reversing.

• When the jog key is turned upward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

• When the jog key is turned downward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

Press the ENTER button seven times.

Setting Method

Remarks Display

EEPROM setting menu [E E P R O M _ S E T]

(Until tracking servo ON)

(After tracking servo ON, inner periphery)

(After tracking servo ON, center)

(After tracking servo ON, outside periphery)

c) Tracking setting

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Focus setting menu [ _ _ F o c u s _ _ _ ]
Step 4
Step 5 Press once the MD PLAY button. Tracking system loop filter gain constant setting [ T G _ _ _ _ _ _ ]
Step 6 Press once the ENTER button. Spindle system loop filter f characteristic constant 1 setting [ T F 1 _ _ _ _ _ ]
Step 7 Press once the ENTER button. Spindle system loop filter f characteristic constant 2 setting [ T F 2 _ _ _ _ _ ]
Step 8 Press once the ENTER button. Setting of tracking system servo mode 4 [ S V C N T 4 _ _ ]
Step 9 Press once the ENTER button. Tracking deceleration pulse level setting (for one line jump) [ T R B L V 0 _ _ ]
Step 10 Press once the ENTER button. Tracking deceleration pulse level setting (for 10 line jump) [ T R B L V t _ _ ]
Step 11 Press once the ENTER button. Tracking kick pulse level setting (for one line jump) [ T R K L V 0 _ _ ]
Step 12 Press once the ENTER button. Tracking kick pulse level setting (for 10 line jump) [ T R K L V t _ _ ]
Step 13 Press once the ENTER button. Tracking drive pulse width setting (for one line jump) [ T D P W o _ _ _ ]
Step 14 Press once the ENTER button. Tracking drive pulse width setting (for 10 line jump) [ T D P W T _ _ _ ]
Step 15 Press once the ENTER button. Tracking slip stop time setting (for one line jump) [ S L C T 0 _ _ _ ]
Step 16 Press once the ENTER button. Tracking slip stop time setting (for 10 line jump) [ S L C T t _ _ _ ]
Step 17 Press once the ENTER button. Tracking slip stop time setting (move) [ S L C T m _ _ ]

Press the ENTER button seven times.

Press the ENTER button two times.

Setting Method

Remarks Display

EEPROM setting menu [E E P R O M _ S E T]

Tracking setting menu [ _ T r a c k i n g _ ]

– 18 –

MD-R2H

Step No.

Setting Method

Remarks Display

Step 18 Press once the ENTER button. TCRS comparison level 1 for high reflection [ T C R S C I P _ ]
Step 19 Press once the ENTER button. Comparison level in case of COUT generation (playback) [ C O T L V p _ ]
Step 20 Press once the ENTER button. Comparison level in case of COUT generation (pecord) [ C O T L V r _ ]
Step 21 Press once the ENTER button. Auto-move waiting time setting [ W A I T m_ _ _ ]

• : Setting volue

• Pressing the REC button causes reversing.

• When the jog key is turned upward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

• When the jog key is turned downward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

d) Sled setting

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2

Press the ENTER button seven times.
Step 3 Press once the MD PLAY button. Focus setting menu [ _ _ F o c u s _ _ _ ]
Step 4

Press the ENTER button three times.
Step 5 Press once the MD PLAY button. Slide system loop filter gain constant setting [ S L G _ _ _ _ _ ]
Step 6 Press once the ENTER button. Slide system loop filter f characteristic constant 2 setting [ S L 2 _ _ _ _ _ ]
Step 7 Press once the ENTER button. Sled output limitter setting [ S L D L I M _ _ ]
Step 8 Press once the ENTER button. Slide servo output dead zone level setting [ S L D L E V _ _ ]
Step 9 Press once the ENTER button. Slide kick pulse level setting (forced move) [ S L K L V k _ _ ]
Step 10 Press once the ENTER button. Slide kick pulse level setting (for 10 lines jump auxiliary use) [ S L K L V t _ _ ]
Step 11 Press once the ENTER button. Slide kick pulse level setting (move) [ S L K L V m _ _ ]

•

: Setting volue

• Pressing the REC button causes reversing.

• When the jog key is turned upward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

• When the jog key is turned downward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

Setting Method

Remarks Display

EEPROM setting menu [E E P R O M _ S E T]

Sled setting menu [ _ _ _ S l e d _ _ _ ]

TEMP • Input temperature correction.

• Correct the TEMP. data according to the PWB ambient temperature, and input it.

• Since the temperature rise causes error of temperature sensing part (RF IC), the following requirements must be observed.

1

Perform the TEST mode without mechanical connection.

2

This operation must be performed quickly after power is supplied.

Data correction table

Ambient temperature (°C)

12.2 ~ 15.8 -3

15.9 ~ 19.6 -2

19.7 ~ 23.2 -1

23.2 ~ 26.8 0

26.9 ~ 30.7 +1

30.8 ~ 34.3 +2

34.4 ~ 37.9 +3

Temperature correction

EEPROM record value = Microcomputer measurement value +

Correction

* EEPROM record value

Value to be measured by the microcomputer at +25°C

* Microcomputer measurement value

Value to be measured by the microcomputer at specific
temperature

* Correction value

Correction value for conversion to measurement value at
+25°C (see the table shown left)

• Temperature table

Temperature

judgment zone

TEMP. input value

0 -79H ~ -10
1 -0FH ~ -0D
2 -0CH ~ -0A
3 -09H ~ -07
4 -06H ~ -05
5 -04H ~ -02
6 -01H ~ 01
702
805
908

H

H

H

10 0BH ~ FF

~ 04
~ 07
~ 0A

H

H

H

H

H

H

H

H

H

H

H

Temperature

compensation

Temperature

range

temperature

-3.0 dB 82.2 < [°C] TEMP.OVER

-2.5 dB 71.2 < ~ 82.2 76.7 [°C]

-2.0 dB 60.3 < ~ 71.2 65.8

-1.5 dB 49.1 < ~ 60.3 54.8

-1.0 dB 41.8 < ~ 49.1 45.5

-0.5 dB 30.7 < ~ 41.8 36.2
0 19.6 < ~ 30.7 25.2

+0.5 dB 8.7 < ~ 19.6 14.2
+1.0 dB -2.3 < ~ 8.7 3.0
+1.5 dB -13.6 < ~ -2.3 -8.0
+2.0 dB ~ -13.6

Center

– 19 –

MD-R2H

e) TEMP setting

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Focus setting menu [ _ _ F o c u s _ _ _ ]
Step 4
Step 5 Press once the MD PLAY button. TEMP reference value setting [ T E M P _ _ ]

Press the ENTER button seven times.

Press the ENTER button four times.

Setting Method

Remarks Display

EEPROM setting menu [E E P R O M _ S E T]

TEMP setting menu [ _ _ _ T e m p _ _ _ ]

Step No.

Step 1
Step 2

•

: Setting volue, : Measurement value

• When the jog key is turned upward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

• When the jog key is turned downward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

EJECT state (or mechanism-less state)
Press the DELETE/CLEAR button.

Setting Method

Remarks Display

[ _ _ E J E C T _ _ _ ]

TEMP reference value setting [ T E M P _ _ ]

f) CONTROL setting

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the MD PLAY button. Focus setting menu [ _ _ F o c u s _ _ _ ]
Step 4
Step 5 Press once the MD PLAY button. CONTROL 1 setting [ C O N T R L 1_ ]
Step 6 Press once the ENTER button. CONTROL 2 setting [ C O N T R L 2_ ]
Step 7 Press once the ENTER button. Setting of spin kick level in MOVE state [ S P K L E V m_ ]
Step 8 Press once the ENTER button. Setting of readjustment interval time (minutes) [ A D J T T M_ _ ]
Step 9 Press once the ENTER button. Setting of equalizer coefficients A and D (high reflection) [ H D E Q A D_ _ ]
Step 10 Press once the ENTER button. Setting of equalizer coefficients A and D (low reflection pit) [ L D E Q A D_ _ ]
Step 11 Press once the ENTER button. Setting of equalizer coefficients A and D (low reflection groove) [ G D E Q A D_ _ ]
Step 12 Press once the ENTER button. Setting of equalizer coefficients B and C (high reflection) [ H D E Q B C_ _ ]
Step 13 Press once the ENTER button. Setting of equalizer coefficients B and C (low reflection pit) [ L D E Q B C_ _ ]
Step 14 Press once the ENTER button. Setting of equalizer coefficients B and C (low reflection groove) [ G D E Q B C_ _ ]
Step 15 Press once the ENTER button. Setting of autolevel slicer gain (high reflection) [ H A L S G_ _ _ ]
Step 16 Press once the ENTER button. Setting of autolevel slicer gain (low reflection pit) [ L A L S G_ _ _ ]
Step 17 Press once the ENTER button. Setting of autolevel slicer gain (low reflection groove) [ G A L S G_ _ _ ]
Step 18 Press once the ENTER button. Setting of autolevel slicer offset (high reflection) [ H A L S O F_ _ ]
Step 19 Press once the ENTER button. Setting of autolevel slicer offset (low reflection pit) [ L A L S O F S_ ]
Step 20 Press once the ENTER button. Setting of autolevel slicer offset (low reflection groove) [ G A L S O F S_ ]

Press the ENTER button seven times.

Press the ENTER button five times.

Setting Method

Remarks Display

EEPROM setting menu [E E P R O M _ S E T]

CONTROL setting menu [ _ C o n t r o l _ _ ]

Step No.

Step 1
Step 2
Step 3 Press once the ENTER button. CONTROL 2 setting [ C O N T R L 1_ ]

• : Setting volue

• When the jog key is turned upward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

• When the jog key is turned downward while the setting is displayed, the setting increases, and a new setting is stored in LSI.

• CONTROL 1
Pit 7 : High frequency superposition ON/OFF in record mode (0:OFF, 1:IN)
Pit 6~4 : Play start SD number (30 to 100 sector, 10 sector step)
Pit 2~0 : High speed jump over-run (384 to 830 lines, 64 lines step)

• CONTROL 2
Pit 4~0 : EEPROM version (a~)

EJECT state (or mechanism-less state)
Press the NAME/TOC EDIT button.

Setting Method

Remarks Display

[ _ _ E J E C T _ _ _ ]

CONTROL 1 setting [ C O N T R L 1_ ]

– 20 –

MD-R2H

8. TEST-PLAY mode

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the DISPLAY button. ADRES setting (Target address initial value is indicated) [ A D R E S _ 0 0 5 0 ]

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

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

Step 6 Press once the MD STOP button. TEST-PLAY menu [ T E S T _ P L A Y _ ]

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

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

• Whenever the DELETE/CLEAR button is pressed in the address setting mode, the address changes as follows.

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

• The digit of address which has been specified with -

-01H.

* If the -

• If the TRACK EDIT button is pressed in the continuous playback mode, the number of jump lines changes as follows.

* After the number of jump lines is indicated for one second, the address indication is restored. [

• If the -

direction.

* If the -

• Whenever the CD STOP button is pressed in the continuous playback mode, the indication changes as follows.

* Pit section Continuous playback (SUBQ address indication + C1 error indication) remains.
* Groove section Continuous playback (ADIP address indication + C1 error indication) remains.

Press the DELETE/CLEAR button.

Press once the MD PLAY button. During search the search output pin 11 is set to "H", and it is

Continuous playback (groove section)

CHARACTER button.

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

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

/ + button is held down, the setting changes continuously with 100 ms cycle.

1 line → 10 line → 400 line → 1 line → …………

/ + button is pressed in the continuous playback mode, the specified number of lines is jumped in the FWD/REV

/ + button is held down, the setting changes with 100 ms cycle.

Setting Method

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

returned to "L" when continuous playback is started.

(Address + C1 error indication) [a c ]

/ + and DISPLAY/CHARACTER button in the address setting mode is set to +01H/

Continuous playback (ADIP address indication + ADIP error indication) remains.

Continuous playback (ADIP address indication + C1 error indication) remains.

↓

↓

↓

………

Remarks Display

T R _ J U M P ]

/ + changes

•

: Adress, : Error late, : Jump lines

9. TEST-REC mode

Step No.

Step 1 Testmode STOP state [ t s m e ]
Step 2
Step 3 Press once the DISPLAY/ ADRES setting (indication of address initial value) [ a 0 0 5 0 _ p w ]

Step 4 Press once the MD PLAY button. During search the search output pin 11 is set to "H", and it is

Step 5 Press once the MD STOP button. TEST-REC menu [ T E S T _ R E C _ _ ]

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

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

• Whenever the DELETE/CLEAR button is pressed in the address setting mode, the address changes as follows.

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

• The digit of address which has been specified with -

-01H.

* If the -

• If the JOG button is pressed in TEST-REC mode and continuous record mode, the laser record power changes.

(Servo gain changes also according to the record power.)

• : Adress, : Laser power cord

Press the DELETE/CLEAR button.

CHARACTER button.

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

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

/ + button is held down, the setting changes continuously with 100 ms cycle.

Setting Method

Remarks Display

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

(returned on "L" when continuous playback is started.Address +
C1 error indication) Continuous recording [ a

/ + and DISPLAY/CHARACTER button in the address setting mode is set to +01H/

p w ]

/ + changes

– 21 –