Yamaha MDX-595 Service Manual

NATURAL SOUND MINIDISC RECORDER MDX-595

MDX-595

MINIDISC RECORDER

MDX-595

SERVICE MANUAL

MDX-595

POWER

PHONES

REC

LEVEL

0 10

EJECT

TIMER

OFF

PLAYREC

S/F REPEAT A-B

DELETE

CHARA.TITLESCROLLDISPLAYRANDOM

CANCEL

DIGITAL

REC LEVEL

SETEDIT

ENTER

ANALOG

REC LEVEL

INPUT

0 10

IMPORTANT NOTICE

This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherant to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated.

WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or

The data provided is be lieved to be accurate and applicable to the unit(s) indica ted on the cove r. The rese arch, engineerin g, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, plea se contact the distributor's Service Division.

WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have accumu-

IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.

injury, destruction of expensive components and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that all service required should be performed by an authorized YAMAHA Retailer or the appointed service representative.

recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.

lated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).

■ CONTENTS

TO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . .1~2

REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

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

INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . .4~8

ADJUSTMENT & TEST MODE . . . . . . . . . . . . . . . 9~16

SPECIAL TEST MODE . . . . . . . . . . . . . . . . . . . . . . . 17

ERROR DISPLAY . . . . . . . . . . . . . . . . . . . . . . . .18~19

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . .20~24

このサービスマニュアルは、エコマーク認定の再生紙を使用しています。

This Service Manual uses recycled paper.

100671

IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25~34

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . .35~37

TEST POINT WAVEFORMS . . . . . . . . . . . . . . . . 38~39

PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . .40~47

SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . .48~51

PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52~64

GREASE APPLICATION DIAGRAM . . . . . . . . . . . . 65

REMOTE CONTROL TRANSMITTER . . . . . . . . . . . 66

MDX-595

■ TO SERVICE PERSONNEL

MDX-595

1. Critical Components Information. Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed.

2. Leakage Current Measurement (For 120V Models Only). When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits.

● Meter impedance should be equivalent to 1500 ohm shunted

by 0.15µF.

● Leakage current must not exceed 0.5mA.

● Be sure to test for leakage with the AC plug in both

polarities.

CAUTION: USE OF CONTROLS OR ADJUSTMENTS

OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

WALL OUTLET

EQUIPMENT UNDER TEST

INSULATING TABLE

Laser Diode Properties

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

AC LEAKAGE TESTER OR EQUIVALENT

Write mode ...max 10 mW 0.5S THE MINI DISC RECORDER SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED SERVICE PERSONNEL.

min cycle 1.5S Repetition

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSOEVER!

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.

G, B models

➀

G, B models

➁

MDX-595

English

➀ THIS PRINTING (SEE POSITION SHOWN IN THE ILLUSTRATION) INFORMS THE USER THAT THE APPARATUS

CONTAINS A LASER COMPONENT.

➁ THIS LABEL (SEE POSITION SHOWN IN THE ILLUSTRATION) WARNS THAT ANY FURTHER PROCEDURE WILL

BRING THE USER INTO EXPOSURE WITH THE LASER BEAM. CAUTION : USE OF CONTROLS, ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE

SPECIFIED HEREIN, MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.

Swedish

➀ DENNA MÄRKNING (SE FIGUR) UPPLYSER OM ATT DET I APPARATEN INGÅR EN LASERKOMPONENT AV

TYP KLASS 1.

➁ VARNINGSMÄRKNING (SE FIGUR) FÖR STRÅLNING. INGREPP I APPARATEN BÖR ENDAST FÖRETAGAS AV

FACKMAN MED KÅNNEDOM OM LASER. APPARATEN INNEHÄLLER EN LASERKOMPONENT SOM AVGER STRÅLNING ÖVERSTIGANDE GRÄNSEN FÖR LASERKLASS 1.

VARNING : OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.

STIRRA EJ I STRÅLEN OCH BETRAKTA EJ STRÅLEN GENOM OPTISKT INSTRUMENT.

Danish

➀ DETTE MÆRKAT ER ANBRAGT SOM VIST I ILLUSTRATIONEN FOR AT ADVARE BRUGEREN OM AT AP-

PARATET INDEHOLDER EN LASERKOMPONENT.

MDX-595

➁ DETTE MÆRKAT OM LASEREN ER ANBRAGT PÅ APPARATET SOM EN OPLYSNING OM AT APPARATET

INDEHOLDER ET LASERKOMPONENT. ADVARSEL : USYNLIG LASERSTRÅLING VED ÅBNING, NÅR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION.

SE IKKE IND I STRÅLEN-HELLER IKKE MED OPTISKE INSTRUMENTER.

ADVARSEL : USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG SIKKERHEDSLÄS BRYTES. STIRR IKKE INN

I STRÅLEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.

Finnish

VARO! : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASER-SÄTEILYLLE.

ÄLÄ TUIJOTA SÄTEESEEN ÄLÄKÄ KATSO SITÄ OPTISEN LAITTEEN LÄPI.

■ REAR PANELS

▼ U model

▼ G, B models

MDX-595

■ SPECIFICATIONS

MDX-595

Digital audio system

System

MiniDisc digital audio system

Disc

MiniDisc

Recording method

Magnetic field variation overwrite

Reading method

Non-contact optical pickup (using semiconductor laser)

Laser

Semiconductor laser

Laser Diode Properties

Material: GaAIAs Wavelength: 785 nm Pulse time: Read mode ... 0.8 mW Continuous Write mode ... max 10 mW 0.5S

min cycle 1.5S Repetition

Record/playback time

Max. 80 minutes

80 minutes (stereo) 160 minutes (mono)

Revolutions

Approx. 400~900 rpm (CLV)

Error Correction

ACIRC (Advanced Cross Interleave Reed-solomon Code)

Sampling frequency

44.1 kHz (32 kHz and 48 kHz signals converted to 44.1 kHz for recording)

Coding

ATRAC (Adaptive TRansform Acoustic Coding)

Modulation system

EFM (Eight-to-Fourteen Modulation)

Number of channels

2 (stereo) or 1 (mono, for extended recording)

Frequency Response

5 ~ 20,000 Hz ±0.5 dB

Signal-to-Noise Ratio

More than 99 dB during playback

Wow and Flutter

Below measurable limit

Outputs

LINE OUT (PLAY)

Type: pin jack Standard output level: 2.0 ± 0.5 Vrms

DIGITAL OUT (OPTICAL)

Type: square optical connector jack

PHONES

Standard output level (Input 150 ohms shorted, – 20 dB): 300 ± 60 mV

GENERAL

Power Supplies

U model 120 V, 60 Hz G, B models 230 V, 50 Hz

Power Consumption

20 W

Dimensions (W x H x D)

435 x 96 x 288 mm (17-1/8" x 3-3/4" x 11-5/16")

Weight

4.1 kg (9 lbs. 1 oz.)

Accessories

Remote Control.... 1

Audio cord... 2 Optical cord... 1

Batteries (size AA, R6, UM-3).... 2

Specifications subject to change without notice.

U : USA model

B : British model

G : European model

* US and foreign patents licensed from Dolby Laboratories

Licensing Corporation.

6.5 (1/4")

Inputs

LINE IN (REC)

Type: pin jack Input impedance: greater than 56 k-ohms Standard input level: 300 mV

DIGITAL IN (OPTICAL) 1/2

Type: square optical connector jack

435(17–1/8")

288(11–5/16")

266.5(10–1/2")

(9/16")

(3–1/8")

(3–3/4")

(5/8")

Units : mm (inch)

■ INTERNAL VIEW

MDX-595

q POWER TRANSFORMER w P.C.B. DIGITAL e P.C.B. MAIN (1) r POWER SWITCH t MD MECHANISM UNIT y P.C.B. MAIN (2)

CB401

■ DISASSEMBLY PROCEDURES

(Remove parts in disassembly order as numbered.)

q w e

CB1

CB5

CB6

CB7

r t y

1. Removal of Top Cover

a. Remove 4 screws ( q ) and 3 screw

2. Removal of Front Panel

a. Remove 4 connectors.

CB5, CB6, CB7, CB401

( e )

b. Remove 3 screws

MD Mechanism Unit

and 2 screws

Top Cover

( w )

( r )

in Fig. 1.

in Fig. 1

3. Removal of MD Mechanism Unit

a. Remove 1 connector.

CB1 b. Remove 4 screws ( t ) in Fig. 1. c. Remove 4 screws ( y ) in Fig. 2.

d. Remove 2 screws ( u ) in Fig. 2. e. Remove 2 screws ( i ) in Fig. 2.

MD Mechanism Unit

Shield Case (Top)

Shield Case (Bottom)

Front Panel

Fig. 1

Support (Mechanism)

Fig. 2

MDX-595

Disassembly of MD Mechanical Unit

MDX-595

Remove the MD mechanical unit according to Steps 1 ~ 3 of the disassembly procedure (page 4).

Removal of MD Main P.C.B. (Fig. 3)

1. Remove 4 screws (Q1).

2. Remove 6 connectors (Q2).

( Q1 ) x 4

1.7 x 3mm

( Q2 ) x 1

Flexible P.C.B. for optical pickup (*1)

(Q2)x1

(*1) After pulling off the flexible P.C.B. for the optical pickup from the connector, cover its end with aluminum foil or the like which is electrically conductive so as to prevent the optical pickup from being damaged by static electricity.

Removal of MD Mechanism (Fig.4)

1. Remove 4 screws (R1).

Caution

Almost the entire surface of the cartridge holder is

coated with oil. When removing the mechanism, hold it

at the rear end (where marked with arrows in the figure)

and avoid touching the oiled surface.

Cartridge Holder

MD Mechanism

MD Main P.C.B.

( Q2 ) x 1

( Q2 ) x 3

Frame

Fig. 3

Removal of Magnetic Head (Fig.5)

1. Remove a screw (A1).

Caution

a. When removing the magnetic head, hold its base and

do not touch the magnetic head itself or the leaf

spring.

b. Place the magnetic head upside down.

c. Use special care so as not to cause any damage to

the magnetic head when installing it.

(A1)x1 ø1.7x5mm

Gray

(R1)x4 ø1.7x8.9mm

Gray

Black

Leaf Spring

MD Mechanism

Fig. 4

Magnetic Head

Sheet, Head

Fig. 5

Removal of Cartridge Holder (Fig.6)

1. Open the roller arm lever in the arrow direction and move the clamper lever to the rear.

2. With a +5V voltage (*2) applied to the red line side of the blue connector of the loading motor, push the rack gear in the arrow direction until the cam plate lever clicks.

(*2) A +5V voltage can be obtained from the pluspol (D6.5/5V) of C3 and the ground

terminal of the Main P.C.B.

3. Remove a screw (B1 and B2, 1 each) from the holder arm and remove the cartridge holder by moving it to the left.

Slider Lever

Cartridge Holder

(B1) x1 Ø1.7x5mm

Clamper Lever

Loading Motor

Roller Arm Lever

MDX-595

Rack Gear

Cam Plate Lever

(B2) x1

Fig.6

Caution

Be careful so that oil does not get on the clamper lever

which contacts the roller of the roller arm lever.

Pluspol (D6.5/5V)

Installation of Cartridge Holder

• To install the cartridge holder, the rack of the mechanism must be

lowered toward the rear.

• While pushing the roller arm lever outward, push in the slider lever.

• Apply a +5V voltage to the loading motor (until clicking sound is

heard) and push in the rack gear.

• With the slider lever and the rack gear installed as described above,

fit the cartridge holder as shown in the figure and tighten screws.

MDX-595

Removal of Mechanism SW P.C.B. (Fig.7)

MDX-595

• Once the mechanism switch P.C.B. is removed, it will

be necessary to perform “Adjustment of Lead-in Switch Position”. (See page 13.)

1. Remove 2 screws (E1) and then remove the Mechanism SW P.C.B.

Installation of Mechanism SW P.C.B.

• Set the mechanism to the eject mode by applying -5V

to the loading motor.

• Install the mechanism SW P.C.B. so that the boss fits

in the hole in it.

• Push the lead switch on the mechanism SW P.C.B.

toward the optical pickup side (so that looseness in the boss hole is eliminated).

• Tighten screws and apply thread lock.

• Measure the lead-in switch position. (See page 13.)

(Enter the result in EEPROM.)

(E1)x1 Ø1.7x9.5mm

(E1)x1 Ø1.7x3mm

(E1)x1 Ø1.7x9.5mm

Mechanism SW P.C.B.

(E1)x1 Ø1.7x3mm

Lead-in switch

Fig.7

Removal of Sled Motor/Loading Motor (Fig.8)

1. Remove 4 screws (D1) and then remove the sled motor/loading motor.

Caution

Use care so as not to cause any damage to the gear.

(The damaged gear will cause abnormal noise to occur

while searching.)

Loading Motor

Mechanism SW P.C.B.

(D1)x2 Ø1.7x2mm

Sled motor

Fig. 8

Removal of Spindle Motor (Fig.9)

• Once the spindle motor is removed, it will be neces-

sary to perform “Pickup Rating”. (See page 14.)

1. Remove 3 screws (C1).

2. Remove the spindle motor by moving it in the arrow direction.

Caution

a. Be careful not to scratch the gear.

(Scratched gear will produce noises during searching.)

b. As the turn-table is magnetized, keep foreign objects

from being attracted.

Turn Table

(C1)x1 Ø1.7x2.1mm

MDX-595

Spindle Motor

(C1)x3 Ø1.7x2.5mm

MDX-595

Removal of Optical Pickup Head (Fig.10 and Fig.11)

1. Remove 3 screws (F1).

Caution

Use care so as not to cause any damage to the gear.

(The damaged gear will cause abnormal noise to occur

while searching.)

2. Remove a screw (F2).

The leaf spring (A) attached to the P.U. will be reused when replacing the pickup. It is not supplied with the optical pickup.

3. Using tweezers or the like, pull the PU shaft from the

base a little. Pull only enough to allow the pickup to come off. If it is pulled off completely, the oil on the shaft will be scraped off.

Be sure to keep oil on the shaft!

(F1)x3 Ø1.7x9.5mm

Fig.9

Optical Pickup Head

MD Guide (B)

Fig. 10

Assembly of Optical Pickup

• When installing the pickup to the MD guide (A), be

sure to tighten the leaf spring (A) with it.

• When installing the pickup to the MD mechanism, fit

the pickup into the MD guide (B) first, match the boss of the MD guide (A) and its hole in the chassis and tighten them with a screw.

Optical Pickup

Fit the pickup into the MD guide (B) first

MD Guide (A)

Leaf Spring (A)

(F2)x1 Ø1.4x2.2mm

PU Shaft

Fig. 11

MDX-595

■ ADJUSTMENT & TEST MODE

MDX-595

Preparation before Adjustment

● Test disc

● Extension cable

(see connection diagram on page 14.)

Type Test disc

High reflecting disc TDYS1 (SONY) [for reproduction] (P/No. TX945850) Low reflecting disc Commercially available mini disc for recording Low reflecting disc MMD-318 [for pre-adjustment] (P/No. AAX04890)

1. Extension P.C.B. for servicing TX946230

2. 2-pin extension connector for servicing TX946200

3. 6-pin extension connector for servicing TX946210

4. 5-pin flat cable for servicing TX946190

5. 28-pin flat cable for servicing TX946220

Type Part No.

TEST MODE

1. How to set to the test mode

1) Press the POWER button while pressing the SET/ENTER button and the PLAY/PAUSE button. Version of microprocessor on display (about 1 second)

t s m 1 3 * * e * *

Version of EEPROM protect data (from 01) Version of microprocessor ROM (from 01)

“EJECT” on display

2) Load either a disc for reproduction or a disc for recording.

“AUT YOBI” on display This completes setting to the test mode.

2. How to set to each mode

Every time the DISPLAY button is pressed, the mode changes. (For operation of each mode, refer to the section describing each mode.)

->AUTO pre-adjustment -> AUTO adjustment -> RESULT preparation -> RESULT -> MANUAL pre-adjustment -> MANUAL adjustment -> EEPROM setting

Caution) The AUTO pre-adjustment and AUTO adjustment modes are used for adjustment during servicing. Other modes

are used when checking the specific measured values and adjusted values or when changing the set value and the adjusted value. Note that use of other modes will rewrite RAM and EEPROM.

3. How to cancel test mode

1) Finish the AUTO pre-adjustment and AUTO adjustment. ( “COMPLETE” appears on the display)

2) Press the REC button. ( “TEST END” appears on the display)

3) Eject the disc by pressing the EJECT button.

4) Turn off the power.

● When using a new combination of a mechanical pickup and an MD P.C.B. after a repair or for some other

reason, make sure to set to the TEST mode and perform AUTO pre-adjustment and AUTO adjustment according to the following procedure.

1) Set to the TEST mode and perform AUTO pre-adjustment and AUTO adjustment.

2) Cancel the TEST mode by pressing the REC button. (Writing into EEPROM starts from here.)

3) Eject the disc by pressing the EJECT button.

4) Turn off the power.

MDX-595

Description of TEST modes

1. AUTO pre-adjustment mode Automatic pre-adjustment is performed. (Grating adjustment mode after this adjustment.)

[ _ AUT _ YOBI _ ] Adjusted values are output by using the interface.

2. AUTO adjustment mode Automatic adjustment is performed.

[ AUTO _ AJST _ ] Adjusted values are output by using the interface.

Continuous reproduction is performed. (Error rate on display, jump test)

3. RESULT preparation mode Not used (Do not use this function as it is not for servicing)

[ _ RST _ YOBI _ ]

4. RESULT mode (main adjustment) Not used (Do not use this function as it is not for servicing)

[ _ RESULT _ _ _ ]

5. MANUAL pre-adjustment mode Not used (Do not use this function as it is not for servicing)

[ _ MNU _ YOBI _ ]

6. MANUAL adjustment mode Not used (Do not use this function as it is not for servicing)

[ _ MNU _ AJST _ ]

7. EEPROM setting mode Various factors of the digital servo function are changed manually.

[ EEPROM _ SET ] Each servo function is turned on independently.

The voltage is measured at the temperature detect terminal and the standard value is set.

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

[ TEST _ PLAY _ ] C1 error rate is measured and ADIP error rate is measured.

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

[ TEST _ REC _ _ ]

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

[ _ _ INNER _ _ _ ]

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

[ _ _ EJECT _ _ _ ] To CONTROL setting (of EEPROM setting)

Laser power setting (record/reproduction power) is performed.

MDX-595

1. AUTO pre-adjustment mode Low reflecting disc (MMD-318) only

Step Setting method Remark Display

Set the Test mode to STOP.

Load a disc.

Press the SET/ENTER button once. Grating adjustment is performed and adjusted values are output. Adjustment is completed.

When adjustment is OK, press the DELETE/CANCEL button.

When adjustment is NG, press the DELETE/CANCEL button.

No disc is loaded.

Auto pre-adjustment menu

Auto pre-adjustment is started after sliding to the innermost track. “ *** ” changes in the following order during automatic adjustment. HAo -> RFg -> SAg -> SBg -> PTG -> PCH -> GTG -> GCH -> RCG -> SEG -> RFG -> SAG -> HAO -> HEO -> TCO -> LAO Proceed to Step 4 when adjustment is OK. Proceed to Step 5 when adjustment is NG. The display returns to the AUTO pre-adjustment menu.

There is an abnormality at the adjusted point such as HAo. Refer to “Troubleshooting”. (page 20)

[ EJECT ]

[ LOADING ] [ _ AUT _ YOBI _ ] [ *** : _ _ _ _ _ _ ]

[ _ COMPLETE _ ] [ Can't _ ADJ. ] [ _ AUT _ YOBI _ ]

[ Can't _ ADJ. ]

MDX-595

2. AUTO adjustment mode

MDX-595

Step Setting method Remark Display

Set the TEST mode to STOP.

Load a disc. Press the DISPLAY button once.

Press the SET/ENTER button once. Adjusted values are output. Adjustment is completed.

When adjustment is OK, press the SET/ENTER button.

Press the INPUT button. Press the DELETE/CANCEL button.

When adjustment is NG, press the DELETE/CANCEL button.

No disc is loaded.

AUTO pre-adjustment menu AUTO adjustment menu

Automatic pre-adjustment is started after sliding to the innermost track. “ *** ” changes in the following order when a high reflecting disc (disc for reproduction) is used. PEG -> HAG “ *** ” changes in the following order when a low reflecting disc (disc for recording) is used. PEG -> LAG -> GCG -> GEG -> LAG Proceed to Step 4 when adjustment is OK. Proceed to Step 5 when adjustment is NG. Continuous reproduction (bit section) (Address + C1 error display) Continuous reproduction (group section) (Address + C1 error display) Continuous reproduction (group section) (Address + ADIP error display) Display returns to the AUTO adjustment menu display. There is an abnormality at the adjusted point such as PEG.

Refer to “Troubleshooting”. (page 20)

[ EJECT ]

[ LOADING ] [ _ AUT _ YOBI _ ] [ AUTO _ AJST _ ] [ *** : _ _ _ _ _ _ ]

[ _ COMPLETE _ ] [ Can't _ ADJ. ] [ s XXXX c YYYY ] [ a XXXX c YYYY ]

[ a XXXX a YYYY ] [ AUTO _ AJST _ ]

[ Can't _ ADJ. ]

Note) *** : Adjustment name, XXXX: Address, YYYY: Measured value

8. TEST-PLAY mode

(Use this mode to check that the playback function is provided at the specified address.)

Step Setting method Remark Display

Load a disc.

Press the TITLE button.

Press the INPUT button. Press the SET/ENTER button.

Continuous reproduction (bit section) Continuous reproduction (group section)

Press the INPUT button. Continuous reproduction (group section)

Press the DELETE/CANCEL button.

• Every time the TITLE button is pressed in the address setting mode, the address changes in the order of 0050-> 03C0 -> 0700 -> 08A0

-> 0050 -> —

• Pressing the DISPLAY button in the TEST-PLAY menu changes to the AUTO pre-adjustment menu.

AUTO pre-adjustment menu TEST-PLAY menu ADDRESS setting (The initial value of the target address is displayed.) Set the search output to “H” while searching and back to “L” when continuous reproduction is started. (Address + C1 error display) (Address + C1 error display) (Address + ADIP error display)

TEST-PLAY menu

[ _ AUT _ YOBI _ ] [ TEST _ PLAY _ ] [ ADRES _ 0050 ]

[ s XXXX c YYYY ] [ a XXXX c YYYY ] [ a XXXX a YYYY ]

[ TEST _ PLAY _ ]

MDX-595

9. TEST-REC mode

Use a disc for confirmation of recording function. (It is used to check the REC function at the specified address.)

Step Setting method Remark Display

Load a disc.

Press the TITLE button twice.

Press the SET/ENTER button.

Press the DELETE/CANCEL button.

• Every time the TITLE button is pressed in the address setting mode, the address changes in the order of 0050-> 03C0 -> 0700 -> 08A0

-> 0050 -> —

• Pressing the DISPLAY button in the TEST-REC menu changes to the AUTO pre-adjustment menu.

AUTO pre-adjustment menu TEST-REC menu ADDRESS setting (The initial value of the address is displayed.) Set the search output to “H” while searching and back to “L” when continuous reproduction is started. Continuous recording TEST-REC menu

[ _ AUT _ YOBI _ ] [ TEST _ REC _ _ ] [ a0050 _ pw ZZ ]

[ a XXXX _ pw ZZ ] [ TEST _ REC _ _ ]

10. INNER mode

Step Setting method Remark Display

Load a disc.

Press the CHARA. button.

Press the SET/ENTER button.

Press the DELETE/CANCEL button.

• Pressing the DISPLAY button in the INNER menu changes to the AUTO pre-adjustment menu.

AUTO pre-adjustment menu INNER menu INNER switch position is measured. (Both SUBQ address and C1 error are displayed.) INNER menu

[ _ AUT _ YOBI _ ] [ _ _ INNER _ _ _ ] [ s XXXX c YYYY ]

[ _ _ INNER _ _ _ ]

MDX-595

11. EJECT mode

Step Setting method Remark Display

EJECT status in the TEST mode

Press the INPUT button.

Press the TITLE edit button.

Press the CHARA. button.

Press the DELETE/CANCEL button.

EJECT menu (No disc is loaded.) Maximum power output status Recording power output status Reproduction power output status To TEMP setting of EEPROM setting (Refer to TEMP setting of EEPROM.) To CONTROL setting of EEPROM setting (Refer to CONTROL setting of EEPROM.) EJECT menu

[ _ _ EJECT _ _ _ ] [ xpw _ _ _ _ _ _ _ ] [ rpw _ _ _ _ _ _ _ ] [ ppw _ _ _ _ _ _ _ ]

[ _ _ EJECT _ _ _ ]

● Confirmation of pick-up laser power

Recording and reproduction can be checked by using the laser power meter. However it should be used for checking only because there is variation in its measurement. When the measured value is excessively deviated from the reference value, replace the pick-up.

Reference value (measured at room temperature of 25 °C) During reproduction (ppw) : 0.72 ± 0.1 mW During recording : 5.5 ± 0.5 mW

Note : Be very careful when using the laser power meter. The laser beam would cause damage to your eye if exposed to it

directly.

MDX-595

●

MDX-595

Lead-in switch position measurement mode

Load a TDYS1 disc for reproduction (high reflecting disc). Note) Adjust the position of the lead-in switch to FF85 ~ FFD2.

1. Loosen 2 screws (A) fixing the mechanism switch P.C.B.

2. Retighten screws while pushing the mechanism switch P.C.B. in the arrow (<-) direction and then measure the position of the lead-in switch again. After adjusting the position, tighten 2 screws (A) securely. (Fig.12)

Loosen 2 screws (A)

Note) Apply thread lock to 2 screws on the

P.C.B. after tightening them.

Lead-in switch

Mechanism SW P.C.B.

Fig.12

● Forced rotation of loading motor

It is possible to force the loading motor to rotate by turning the jog dial when the microprocessor version (tsm13**e**) of the test mode or EJECT appears on display. (This is used when the disc cannot be ejected.)

* To obtain the microprocessor version on display When a disc is loaded, “ _ AUT _ YOBI _ ” appears on display. Press

the DELETE/CANCEL key in this state, and the microprocessor version will appear.

● Confirmation of magnetic head installation position

• After replacing the magnetic head and the optical pick-up, be

sure to confirm their installation positions.

• To facilitate adjustment of their installation positions, bring the

optical pick-up to the center position and follow the procedure described below.

Objective lens

Magnetic head

Radial direction

Circumferentical direction

Push down with a finger.

1.Push down the up-shift arm of the magnetic head with a finger to raise the magnetic head.

2.Looking at the unit from above, check if the magnetic head matches with the optical pick-up objective lens.

3.Check to ensure that the magnetic head moves up and down smoothly.

Magnetic head

MDX-595

MECHANISM ADJUSTMENT

When making adjustment, be sure to connect an extension cable for servicing and an expansion P.C.B. as shown in Fig.16.

1. Optical pickup rating inspection method

GND (TP1125)

IC1101 No.43 pin

EOUT (TP1129)

IC1101 No.26 pin

FOUT (TP1130)

IC1101 No.25 pin

(See page E41/J39)

(Externally attached)

100K

470p

100K

Oscilloscope

GND CH1 CH2

Lissajous waveform

a:b = Within 4:1

Fig. 13

Spindle motor

MDX-595

After performing automatic adjustment in the AUTO mode selected from the test mode by using a high reflecting MD disc (COMPLETE status on display), adjust the EOUT to FOUT Lissajous waveform (x-y).

1. Loosen 3 screws of the spindle motor a little and make adjustment while watching the Lissajous waveform.

2. After adjustment, tighten screws in the order of (q), (w) and (e).

2. Jitter verification method

After performing automatic adjustment in the AUTO mode selected from the test mode by using a low reflecting MD disc, confirm the jitter in the pit continuous reproduction mode and the groove continuous reproduction mode.

FFC for 5P extension TX946190

Connector for 2P extension TX946200

Adjustment hole

Spindle motor

IC1201 No.1 pin (TP1201)

EFMMON

GND

(TP1125)

(See page E41/J39)

From magnetic head

Adjustment hole

Fig. 14

Check the Lissajous waveform while adjusting the installation position by using a screwdriver in the adjustment hole in the spindle motor.

Jitter meter

Fig. 15

CN1300(Rear face)

CN1602(Rear face) CN1601(Rear face) CN1603(Rear face) CN1604(Rear face)

MD Main P.C.B.

Connector for 6P-2P extension TX946210

CN1101

From motor

Mechanism SW P.C.B.

FFC for 28P extension TX946220

From optical pickup

Extension P.C.B. for servicing (TX946230) Install an Extension P.C.B. for servicing to the mechanism.

Fig. 16

PROCEDURE TO WRITE DATA INTO EE-PROM (IC1402)

1. Procedure to change the EE-PROM and write the initial value of the microprocessor into EE-PROM

(1) Replace the EE-PROM. (2) Refer to the latest “List of EE-PROM contents”. (3) Press the POWER button while pressing the SET/

ENTER button and the PLAY/PAUSE button to start the test mode.

(4) Version on display

Version of EEPROM protect data (from 01)

t s m 1 3 * * e * *

Version of microprocessor ROM (from 01)

(5) Load a disc.

[ AUT YOBI ]

(6) Press the DISPLAY button 6 times.

[ EEPROM SET ]

(7) Perform the procedure to have “EE-PROM setting

mode transition diagram” displayed, compare it with “List of EE-PROM contents” and set to “List of EEPROM contents” by using the jog dial.

(8) Set the temperature standard value.

(Refer to “Procedure to set the temperature standard value”.)

(9) Use the same settings as “List of EE-PROM con-

tents” for all.

10)Set to the TEST mode and perform AUTO pre-

adjustment and AUTO adjustment.

11)Cancel the TEST mode by pressing the REC button.

(Writing into EEPROM starts from here.)

2. Procedure to set the temperature standard value

(This setting should be performed within the room

temperature range of 21 ˚C ~ 29 ˚C.)

(1) Have the AUTO pre-adjustment mode menu dis-

played.

[ AUT YOBI ]

(2) Compensate the temperature to be suitable for the

ambient temperature, referring to the table below.

Ambient temperature Compensation value

˚C ~ + 23.2 ˚C

+ 21.0 + 23.3 + 26.9

˚C ~ + 26.8 ˚C ˚C ~ + 23.7 ˚C

– 01H

± 0H

+ 01H

Example : When the ambient temperature is 22 ˚C

and the temperature measured value is 7A

Temperature set value = 7AH – 01H

= 79H

* When the measured temperature deflects between 2

values, use the smaller one as the measured value (79

H if measured values are 7AH and 79H).

(3) Press the DISPLAY button 6 times.

[ EEPROM SET ]

(4) Press the SET/ENTER button 7 times.

[ Focus ]

(5) Press the DISPLAY button 4 times.

[ Temp ]

(6) Press the SET/ENTER button.

[ TEMP ❍ ❍ ◆ ◆ ]

❍ ❍ : Temperature measured value

◆ ◆ : Temperature set value

(7) Adjust the temperature set value to the value ob-

tained as described above by using the jog dial.

(8) Press the DELETE/CANCEL button.

[ EEPROM SET ]

LIST OF EE-PROM CONTENTS

● Focus setting

Item on display Set value

FG ❍ ❍ DA H FF1 ❍ ❍ 70 H FF2 ❍ ❍ E0 H FZHLEV ❍ ❍ ED H FOKLEVn ❍ ❍ 08 H FOKLEVf ❍ ❍ 08 H FOKLPFn ❍ ❍ 00 H FOKPFVf ❍ ❍ 88 H WAITf ❍ ❍ 90 H

● Spin setting

Item on display Set value

SPG ❍ ❍ 20 H SPG-in ❍ ❍ B8 H SPG-mid ❍ ❍ 95 H SPG-out ❍ ❍ 79 H SP1 ❍ ❍ 10 H SP2 ❍ ❍ 87 H SP3 ❍ ❍ E3 H SP4 ❍ ❍ E3 H SP5 ❍ ❍ 10 H SPDLIM ❍ ❍ 7F H

● Tracking setting

Item on display Set value

TG ❍ ❍ 6B H TF1 ❍ ❍ 6B H TF2 ❍ ❍ E0 H SVCNT4 ❍ ❍ 00 H TRBLVo ❍ ❍ 50 H TRBLVt ❍ ❍ 54 H TRkLVo ❍ ❍ 50 H TRkLVt ❍ ❍ 2E H TDPWo ❍ ❍ 89 H TDPWt ❍ ❍ 1A H SLCTo ❍ ❍ 00 H SLCTt ❍ ❍ 40 H SLCTm ❍ ❍ 53 H TCRSCIP ❍ ❍ 16 H COTLVP ❍ ❍ 0A H COTLVr ❍ ❍ 1C H WAITm ❍ ❍ FF H

● Slide setting

Item on display Set value

SLG ❍ ❍ 3B H SL2 ❍ ❍ 18 H SLDLIM ❍ ❍ 7F H SLDLEV ❍ ❍ 12 H SLKLVk ❍ ❍ 50 H SLKLVt ❍ ❍ 3A H SLKLVm ❍ ❍ 50 H

● Adjust setting

Item on display Set value

COK ❍ ❍ A0 H FAT ❍ ❍ C0 H TAT ❍ ❍ 3E H CAT ❍ ❍ 20 H FAB ❍ ❍ 64 H STR ❍ ❍ 0A H SFS ❍ ❍ 0D H STC ❍ ❍ 0D H

EE-PROM SETTING MODE TRANSITION DIAGRAM

● Control setting

Item on display Set value

CONTROL1 ❍ ❍ 80 H CONTROL2 ❍ ❍ 02 H SPKLEVm ❍ ❍ 26 H ADJTTM ❍ ❍ 14 H HDEQAD ❍ ❍ 92 H LDEQAD ❍ ❍ 8F H GDEQAD ❍ ❍ 8D H HDEQBC ❍ ❍ 8C H LDEQBC ❍ ❍ 8F H GDEQBC ❍ ❍ 8D H HALSG ❍ ❍ 21 H LALSG ❍ ❍ 21 H GALSG ❍ ❍ 11 H HALSOFS ❍ ❍ FF H LALSOFS ❍ ❍ 00 H GALSOFS ❍ ❍ 00 H

Note) To return to the SUB MENU or MAIN MENU display of the test mode, press the DELETE/CANCEL button.

MDX-595

■ SPECIAL TEST MODE

MDX-595

● How to set to the special test mode

Press the POWER button while pressing the SET/ENTER button and the STOP button. Then all the indicators will light up.

● Operation procedure

Every time the SET/ENTER button is pressed, lighting of indicators and items on the display change as follows.

1) All indicators light up.

2) All indicators turn off.

3) Segments not sharing the border light up.

4) Above segments turn off and other segments light up.

5) The date when the software was entered appears on the display.

6) The version of the micro processor appears on the display. [ CPU Ver:TP01 ]

7) The time of auto-marking appears on the display. [ AM Time :C8h ]

8) The analog level of auto-marking appears on the display. [ AM Lv1_A:24h ]

9) The digital level of auto-marking appears on the display. [ AM Lv1_D:1Ah ]

10) Write/read check for EEPROM appears on the display [ EE W/R Check ] When the INPUT button is pressed at this point, whether the micro processor executed data write/read function into EEPROM or not is checked. If [OK] appears on the display and the pin 6 of IC6 is at “H”, the check result is satisfactory. [NG] is displayed when there is an error while writing or reading the data. In such a case, check EEPROM (IC7).

● How to cancel the special mode

Press the STOP button, and the mode will change from the special test mode to the product mode and the data in RAM will be cleared. Note : Turning off the power will cancel the special test mode but will not clear the data in RAM.

Data to write in EEPROM (IC7) Initial settings

INPUT mode ANALOG REPEAT mode OFF RANDOM mode OFF PROGRAM mode OFF REC mode (STEREO/MONO) STEREO AUTO MARK/MANUAL AUTO (“MANUAL” does not light up.) DISPLAY mode DISC TITLE

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