Sony ZSM-30 Service manual

ZS-M30

SERVICE MANUAL

Ver 1.1 2001.04

US and foreign patents licensed from Dolby Laboratories Licensing Corporation

CD Section

MD Section

Australian Model

Model Name Using Similar Mechanism

CD Mechanism Type

Optical Pick-up Name

Model Name Using Similar Mechanism

MD Mechanism Type

Optical Pick-up Name

AEP Model

UK Model

NEW

KSM-213CDP

KSS-213C

NEW

MT-ZSM30-168

KMS-260B

CD player section

System

Compact disc digital audio system

Laser diode properties

Material: GaAlAs Wave length: 785 nm Emission duration: Continuous Laser output: Less than 44.6 µW (This output is the value measured at a distance of about 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.)

Spindle speed

200 r/min (rpm) to 500 r/min (rpm) (CLV)

Number of programme positions

Frequency response

20 - 20 000 Hz +1/–2 dB

Wow and flutter

Below measurable limit

Radio section

Frequency range

FM: 87.5 - 108 MHz MW:531 - 1,602 kHz (9 kHz step)

530 - 1,610 kHz (10 kHz step)

LW: 153 - 279 kHz

IF FM: 10.7 MHz

MW/LW: 450 kHz

Aerials

FM: Telescopic aerial MW/LW: External aerial terminals

SPECIFICATIONS

MD player section

System

Minidisc digital audio system

Disc

MiniDisc

Laser diode properties

Recording/playback time

Stereo recording: Maximum 80 minutes (with MDW-80) Monaural recording: Maximum 160 minutes (with MDW-80)

Revolutions

400 rpm to 900 rpm (CLV)

Error correction

Advanced Cross Interleave Reed Solomon Code (ACIRC)

Sampling frequency

44.1 kHz

Coding

Adaptive Transform Acoustic Coding (ATRAC)

PERSONAL MINIDISC SYSTEM

9-873-011-12

2001D0200-1

Sony Corporation

Personal Audio Company

Shinagawa Tec Service Manual Production Group

ZS-M30

Modulation system

EFM (Eight-to-Fourteen Modulation)

Number of programme positions

2 stereo programme positions

Frequency response

20 - 20,000 Hz +1/–2 dB

Signal-to-noise ratio

Over 80 dB (during playback)

Wow and flutter

Below measurable limit

General

Speaker

Full-range: 8 cm (3 1 ⁄4 in.) dia., 4 Ω cone type (2) Panorama sound: 5 cm (2 in.) dia., 12 Ω cone type (2)

Inputs

LINE IN (stereo minijack): Sensitivity 436 mV/870 mV

Outputs

Headphones jack (stereo minijack) (1):

For 32 Ωimpedance headphones

Maximum power output

Full-range: 8 W Panorama sound: 3.4 W

TABLE OF CONTENTS

Specifications ........................................................................... 1

1. SERVICING NOTE

1-1. Notes on Handling the Optical Pick-up Block or

Base Unit ............................................................................ 3

1-2. Notes on Laser Diode Emission Check .............................. 3

1-3. Notes on Chip Component Replacement ........................... 3

1-4. Flexible Circuit Board Repairing ....................................... 3

1-5. Chuck Plate Jig on Repairing ............................................. 3

1-6. Checking the Laser Diode and Focus Search Operation .... 3

1-7. Checks Prior to Parts Replacement and Adjustments

(for MD Section) ............................................................... 4

2. GENERAL

Playing a CD ...................................................................... 5

Recording a Whole CD (Synchronized Recording)........... 5

Playing an MD ................................................................... 6

Listening to the Radio ........................................................ 6

3. DISASSEMBLY

3-1. Cabinet (Rear), Cabinet (Front) ......................................... 7

3-2. BATT (B) Board, BATT (A) Board, Power Board ............. 7

3-3. Cabinet (Upper) ASSY....................................................... 8

3-4. Main Board, LCD Board .................................................... 8

3-5. CD Board ........................................................................... 9

3-6. Top Board ........................................................................... 9

3-7. Tuner Board ........................................................................ 9

3-8. MD Block ASSY.............................................................. 10

3-9. SW (L) Board, Jack Board, SW (R) Board ...................... 10

3-10. MD Board ...................................................................... 11

3-11. REC Board, DETECT Board ......................................... 11

3-12. Over Write Head (HR901), MD Optical Pick-up,

D SW Board ................................................................... 12

Power requirements

For personal minidisc system: 230 V AC, 50 Hz For back-up memory:

4.5 V DC, 3 R6 (size AA) batteries For remote control: 3 V DC, 2 R6 (size AA) batteries

Power consumption

26 W

Dimensions (incl.projecting parts)

approx. 475 X 165.5 X 249 mm (w/h/d) (18 3/4 X 6 5 ⁄8 X 9 7/8 inches )

Mass

approx. 4.6 kg (10 lb. 2 oz)

Supplied accessories

Mains lead (1) Remote control (1) MW/LW loop aerial (1) AV connecting cord (1) Audio connecting cord (1)

Design and specifications are subject to change without notice.

5. ELECTRICAL ADJUSTMENT

5-1. Tuner Section ................................................................... 17

5-2. MD section ....................................................................... 19

5-3. CD section ........................................................................ 25

6. DIAGRAMS

6-1. IC Pin Function Descriptions ........................................... 28

6-2. Block Diagrams (1/4) ....................................................... 37

6-3. Block Diagrams (2/4) ....................................................... 38

6-4. Block Diagrams (3/4) ....................................................... 39

6-5. Block Diagrams (4/4) ....................................................... 40

6-6. Printed Wiring Boards -Main Section-............................. 41

6-7. Schematic Diagram -Main Section (1/3)- ........................ 42

6-8. Schematic Diagram -Main Section (2/3)- ........................ 43

6-9. Schematic Diagram -Main Section (3/3)- ........................ 44

6-10. Printed Wiring Boards -Power Section- ......................... 45

6-11. Printed Wiring Boards -Tuner Section- .......................... 46

6-12. Schematic Diagram -Tuner Section- .............................. 47

6-13. Printed Wiring Boards -Control Section- ....................... 48

6-14. Schematic Diagram -Control Section- ........................... 49

6-15. Printed Wiring Boards -CD Section- .............................. 50

6-16. Schematic Diagram -CD Section- .................................. 51

6-17. Printed Wiring Boards -MD Section- ............................. 52

6-18. Schematic Diagram -MD Section (1/2)- ........................ 53

6-19. Schematic Diagram -MD Section (2/2)- ........................ 54

7. EXPLODED VIEWS

7-1. Rear Cabinet Section ........................................................ 64

7-2. Front Cabinet Section ....................................................... 65

7-3. Upper Cabinet Section ..................................................... 66

7-4. Optical Pick-up Section.................................................... 67

7-5. MD Section -1 .................................................................. 68

7-6. MD Section -2 .................................................................. 69

4. TEST MODE

4-1. MD Section ...................................................................... 13

4-2. Section the Test Mode ...................................................... 13

4-3. Releasing the Test Mode .................................................. 13

4-4. Basic Operations of the Test Mode .................................. 13

4-5. Selecting the Test Mode ................................................... 14

4-6. Functions of Other Buttons .............................................. 16

4-7. Test Mode Displays .......................................................... 16

4-8. Meanings of Other Displays............................................. 16

8. ELECTRICAL PARTS LIST .................................... 70

Insert a precision screw driver and push SWITCH (S701)

SECTION 1

SERVICE NOTE

ZS-M30

This Compact Disc player is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT label is located on the bottom exterior.

CAUTION

Use of controls or adjustments or performance of proceduresother than those specified herein may result in hazardous radiation exposure.

1-1. NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

1-2. NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission,observe from more than 30 cm away from the objectivelens.

1-5. CHUCK PLATE JIG ON REPAIRING

On repairing CD section, playing a disc without the CD lid, use Chuck Plate Jig.

• Code number of Chuck Plate Jig: X-4918-255-1

1-6. CHECKING THE LASER DIODE AND FOCUS

SEARCH OPERATION

1. Turn on the POWER and open the CD cover.

2. As shown below, push S701 (CD DOOR) with a screwdriver or other tool.

3. Press the CD button.

4. Check the objective lens to make sure that the laser diode is emitting light. If not so, the auto power control circuit or optical pickup would be damaged. Verify that the objective lens moves vertically three times for focus search.

1-3. NOTES ON CHIP COMPONENT REPLACEMENT

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

1-4. FLEXIBLE CIRCUIT BOARD REPAIRING

• Keep the temperature of the soldering iron around 270 °C dur-

ing repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED

LINE

WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN

THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ZS-M30

1-7. CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS (FOR MD SECTION)

Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in “5 Electrical Adjustments”

Laser power check

Focus power check

C PLAY check

Self-recording/playback check

Criteria for Determination (Unsatisfactory if specified value is not satisfied)

• 0.9 mW power Specified value : 0.80 to 0.96 mW

• 7.0 mW power Specified value : 6.8 to 7.2 mW

lop (at 7mW)

• Labeled on the optical pickup

Iop value ± 10%

• Error rate check Specified value : For points a and b C1 error : About 200 ADER : Below 2 Point C C1 error :Below 50 AD error :Below 2

• Error rate check Specified value: a. When using test disc (MDW-74/AU-1)

C1 error : Below 80 ADER : Below 2

b. When using check disc (TDYS-1)

C1 error : Below 50

• CPLAY error rate check Specified value: C1 error : Below 80 ADER : Below 2

• Clean the optical pick-up

• Adjust again

• Replace the optical pick-up

If always unsatisfactory:

• Replace the overwrite head

• Check for disconnection of the circuits around the overwrite head

If occasionally unsatisfactory:

• Check if the overwrite head is distorted

• Check the mechanism around the sled

Measure if unsatisfactory:

Note:

The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjustments. When performing adjustments, use the specified values for adjustments.

SECTION 2

GENERAL

ZS-M30

This section is extracted from instruction manual.

ZS-M30

DISASSEMBLY

)

The equipment can be removed using the following procedure.

ZS-M30

SECTION 3

Cabinet (rear)

Set

Cabinet (front)

BATT (B) board, BATT (A) board, power board

Main board, LCD board

Cabinet (upper) ASSY

MD block ASSY

SW (L) board,

Tuner board

jack board, SW (R) board

Note : Follow the disassembly procedure in the numerical order given.

3-1. CABINET (REAR), CABINET (FRONT)

Main board

CN801

CD board

TOP board

MD board

Screws (+BVTP 3 X 14)

REC board, detect board

(+BVTP 3 X 12) (silver

Screws

(+BVTP 3 X 14)

Over write head (HR901), MD optical pick-up, D SW board

Cabinet (rear)

Cabinet (front)

3-2. BATT (B) BOARD, BATT (A) BOARD, POWER BOARD

Chissis, transformer

Screws (+BVTP 3 X 10)

CN902

Screws

(+BVTP 3 X 12) (silver)

Screws (+BVTP 3 X 12) (silver)

Claw

Power board

Screws (+BVTP 3 X 10)

BATT (A) board

BATT (B) board

Cabinet (rear)

ZS-M30

)

3-3. CABINET (UPPER) ASSY

Main board

(CN301)

Main board

(CN302)

Main board

(CN303)

Cabinet (upper) ASSY

Screws (+BVTP 3 X 10

CN810

Tuner board

(CN1)

CD board (CN703)

Cabinet (front)

3-4. MAIN BOARD, LCD BOARD

Wire,parallel (6 core)

Main board (CN803)

Wire,parallel (19 core)

Main board (CN808)

Cabinet (upper) ASSY

Wire,parallel (22 core)

Main board (CN807)

Wire,parallel (8 core)

SW (R) board (CN402)

Main board (CN805)

Screws (+BVTP 3 X 10)

LCD board

LCD board (CN404)

LCD1

Remove solder (7 places)

Screws (+BVTP 3 X 10)

Main board

Screws (+BVTP 3 X 10

3-5. CD BOARD

)

Cabinet (upper) ASSY

Wire,Parallel (16 core

(CN701)

ZS-M30

3-6. TOP BOARD

Remove solder

(4 places)

Cabinet (upper) ASSY

CD board

Screw (+P 2 X 6)

Top board

3-7. TUNER BOARD

Cabinet (front)

Screws (+BVTP 2.6 X 10)

Tuner board

Screws (+BVTP 3 X 10

ZS-M30

)

3-8. MD BLOCK ASSY

Screws (+BVTP 3 X10)

Screws (+BVTT 2.6 X 6)

MD block ASSY (MT-ZSM30-168)

Chassis (TU)

Screws (+BVTP3 X10

Cabinet (front)

3-9. SW (L) BOARD, JACK BOARD, SW (R) BOARD

Screws (+BVTP 2.6 X 10)

SW (L) board

Jack board

Retainer (A)

Screws (+BVTP 3 X 10)

Retainer (B)

Screws (+BVTP 2.6 X 10

SW (R) board

Cabinet (front)

3-10. MD BOARD

Screws, MD fitting

MT-ZSM30-168

Claw

Wire,Parallel (7 core)

CN601 (2pin)

Claw

Screws (+BVTP 2.6 X 5)

Case (MD upper) shield

Claw

Screws, MD fitting

Op flexible board

Wire,parallel (9 core)

REC board (CN505)

MD board

ZS-M30

3-11. REC BOARD, DETECT BOARD

Remove solder

(2 places)

DETECT board

Claws

Slider

Claw

Screws (+P 2.6 X 2.5)

Wire,parallel (22 core)

Main board (CN807)

Case (MD lower) shield

REC board

Move slider away from pin.

Chassis

Over write head flexible board

(CN504)

Claws

ZS-M30

)

3-12. OVER WRITE HEAD (HR901), MD OPTICAL PICK-UP, D SW BOARD

Over write head (HR901)

D SW board

Screw (+P 1.7X2.5)

Chassis

Screws (1.4 X 2)

MD optical pick-up (KMS-260B)

Screws (+P 1.4 X 3.5

ZS-M30

SECTION 4

TEST MODE

Refer to “5. ELECTRICAL ADJUSTMENT” for the test mode of CD section.

4-1. MD SECTION

1. PRECAUTIONS FOR USE OF TEST MODE

• As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is stopped before setting and removing it. Even if the Z (MD EJECT) button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not stop rotating. Therefore, it will be ejected while rotating. Be sure to press the Z (MD EJECT) button after pressing the NO/CANCEL button and the rotation of disc is stopped.

1-1. Recording laser emission mode and operating buttons

• Continuous recording mode (CREC MODE)

• Laser power check mode (LDPWR CHECK)

• Laser power adjustment mode (LDPWR ADJUST)

• When pressing the YES/ENTER button.

4-2. SETTING THE TEST MODE

1. Set to standby state.

2. Press and hold the YES/ENTER button then press MD u t x t u t x .

4-3. RELEASING THE TEST MODE

Remove the power cord to release the test mode.

4-4. BASIC OPERATIONS OF THE TEST MODE

All operations are performed with the following buttons: jogdial . , > , YES/ENTER and NO/CANSEL . The functions of these buttons are as follows.

Function name Function

JOG ( > ) Proceeds the parameter/mode change. JOG ( . ) Returns to the parameter/mode change. YES/ENTER Goes ahead. Determines the setting/selection. NO/CANCEL Suspends.

ZS-M30

4-5. SELECTING THE TEST MODE

There are 9 types of test modes as shown below. The groups can be switched by turn the jog dial. After selecting the group to be used, press the YES/ENTER button. After setting a certain group, turn the jog dial between these modes.

Display Contents

TEMP ADJUST Temperature compensation offset adjustment LDPWR ADJUST Laser power adjustment LDPWR CHECK Laser power check LOAD CHECK load check S CURVE CHECK S curve check EFBAL ADJUST EF balance adjustment FBIAS ADJUST Focus bias adjustment FBIAS CHECK Focus bias check CPLAY MODE Continuous playback mode CREC MODE Continuous recording mode DETRK CHECK Detrack check LOAD AGING Load aging EEP MODE Non-volatile memory control

• For details of each adjustment mode, refer to “5. Electrical Adjustments”.

• If a different mode has been selected by mistake, press the NO/CANCEL button to release that mode.

• EEP MODE is not used for servicing and therefore are not described in detail. If these modes are set accidentally, press the NO/CANCEL button to release the mode immediately. Be especially careful this mode will overwrite the non-volatile memory and reset it, and as a

result, the unit will not operate normally.

•When selecting test mode, usually the message “TEMP ADJUST” appears. In two rare cases, however, another message may be shown.

1. After conclusion of automatic temperature compensation (starting from display “TEMP = 00”), the message “Disc Insert” appears.

2. The message “Disc Insert” is displayed right form the start.

In both cases press the YES/ENTER button while holding the EDIT button, thus displaying “TEMP ADJUST” and entering normal test mode.

In order to cause “TEMP ADJUST” to be displayed whenever test mode is selected, execute the following steps.

1. Rotate the jog dial until “EEP MODE” is shown.

2. Press the YES/ENTER button to display “EEP READ”.

3. Press the YES/ENTER button to display “EEP XXXX”.

(The first two “X”-marks represent the address, the latter two the value).

4. Rotate the jog dial to set the address to 15.

5. Press the YES/ENTER button while holding the EDIT button.

6. Confirm that the display shows “EEP15XX >XX”.

7. Rotate the jog dial to set the value after the “>”-mark to FF.

8. Press the YES/ENTER button.

9. Confirm that the display shows “Complete”.

10.After that, confirm that the display turns to “EEP READ”.

11.Press the YES/ENTER button.

12.Confirm that the display shows “EEP15FF”.

13.Press the NO/CANCEL button.

4-5-1. Operating the Continuous Playback Mode

1. Entering the continuous playback mode

1 Set the disc in the unit. (Whichever recordable discs or discs for playback only are available) 2 Potate the jog dial and display “CPLAY MODE”. 3 Press the YES/ENTER button to change the display to “CPLAY MID”. 4 When access completes, the display changes to “C1 = AD = ”.

Note: The numbers “ ” displayed show you error rates and ADER.

2. Changing the parts to be played back

1 Press the YES/ENTER button during continuous playback to change the display as below.

CPLAY MID CPLAY OUT CPLAY IN

When pressed another time, the parts to be played back can be moved.

2 When access completes, the display changes to “C1 = AD = ”. Note: The numbers “ ” displayed show you error rates and ADER.

3. Ending the continuous playback mode

1 Press the NO/CANCEL button. The display will change to “CPLAY MODE”. 2 Press the Z (MD) button and take out the disc.

Note: The playback start addresses for IN, MID, and OUT are as follows.

IN : 40h cluster MID : 300h cluster OUT: 700h cluster

ZS-M30

4-5-2. Operating the Continuous Recording Mode (Use only when performing self-recording/palyback check)

1. Entering the continuous recording mode

1 Set a recordable disc in the unit. 2 Rotate the jog dial and display “CRDE MODE”. 3 Press the YES/ENTER button to change the display to “CREC MID”. 4 When access completes, the display changes to “CREC ( )” and “REC ” lights up.

Note: The numbers “ ” displayed shows you the recording position addresses.

2. Changing the parts to be recorded

1 When the YES/ENTER button is pressed during continuous recording, the display changes as below.

CREC MID CREC OUT CREC IN

When pressed another time, the parts to be recorded can be changed. “REC ” goes off.

2 When access completes, the display changes to “CREC ( Note: The numbers “ ” displayed shows you the recording position addresses.

3. Ending the continuous recording mode

1 Press the NO/CANCEL button. The display changes to “CREC MODE” and “REC ” goes off. 2 Press the Z (MD) button and take out the disc.

Note 1: The recording start addresses for IN, MID, and OUT are as follows.

IN : 40h cluster MID : 300h cluster

OUT: 700h cluster Note 2: The NO/CANCEL button can be used to stop recording anytime. Note 3: Do not perform continuous recording for long periods of time above 5 minutes. Note 4: During continuous recording, be careful not to apply vibration.

)” and “REC ” lights up.

4-5-3. Non-storage memory mode (EEP mode)

This is the mode to read write the contents of the non-volatile storage memory. This mode is not used for servicing. If you accidentally enter this mode, exit immediately by pressing the NO/CANCEL button.

ZS-M30

4-6. FUNCTIONS OF OTHER BUTTONS

Function Contents

u (MD)

x (MD)

M m

DISPLAY Z (MD)

REC/REC MODE

4-7. TEST MODE DISPLAYS

Each time the DISPLAY button is pressed, the display changes in the following order.

1. Mode display

Displays “TEMP ADJUST”, “CPLAYMODE”, etc.

2. Error rate display

Displays the error rate in the following way.

C1 = AD = C1 = Indicates the C1 error. AD = Indicates ADER.

3. Address display

The address is displayed as follows. (MO: recordable disc, CD: playback only disc) Press the REPEAT buttons at the same time to switches between the groove display and pit display. h = s = (MO pit and CD) h = a = (MO groove) h = Indicates the header address. s = Indicates the SUBQ address. a = Indicates the ADIP address.

Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo turns ON/OFF.

Stops continuous playback and continuous recording.

The sled moves to the outer circumference only when this is pressed.

The sled moves to the inner circumference only when this is pressed.

Switches the displayed contents each time the button is pressed

Ejects the disc

When pressed during continuous playback, switches between recording start stop.

Mode display

Error rate display

Address display

Auto gain display

(Not used in servicing)

IVR display

(Not used in servicing)

Note: “–” is displayed when servo is not imposed.

4. Auto gain display (Not used in servicing)

The auto gain is displayed as follows. AG F =

5. IVR display (Not used in servicing)

The IVR is displayed as follows. [ ][ ][ ]

T =

4-8.MEANINGS OF OTHER DISPLAYS

Display

SHUF

PGM

REC

TOC EDIT

TRACK

TIMER MONO

During continuous playback (CLV: ON) Tracking servo OFF

Recording mode ON

Contents When Lit When Off

ABCD adjustment completed Pit CLV-S FCS/TRK/AUTO GAIN successful

Contents

STOP (CLV: OFF) Tracking servo ON Recording mode OFF

Groove CLV-A FCS successful, TRK unsuccessful

TUNER BOARD

C27

C10

JC3

C12

R28

C44

C45

C43

C51

R32

C46

C47

C54

C11

R13

C26

R14

R30

R31

JW2

JW7

CT4

JW6

JW10

JW5

FL1

CT3

CT2

JW4

JW3

JW1

SECTION 5

ELECTRICAL ADJUSTMENTS

ZS-M30

5-1.TUNER SECTION

AM Section

RADIO BAND button : MW or LW Volume : MIN

AM RF signal generator

30% amplitude modulation by 400Hz signal. Output level : as low as possible

FM Section

RADIO BAND button : FM Volume : MIN

FM RF signal generator

22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible

Put the lead-wire antenna close to the supplisd MW/L loop antenna.

0.01 uF

telescopi antenna terminal

LW FREQUENCY COVERAGE ADJUSTMENT

Adjust part Frequency display

reading on digital

voltmeter

CT4 279kHz Adjustment value: 5.4 to 6.0V

Confirmation 153kHz 0.4 to 1.1V

LW TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter.

L 4 162kHz CT3 261kHz

Adjust for a maximum reading on level meter.

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust part Frequency display

FM IF ADJUSTMENT

L6 10.7MHz

reading on digital

voltmeter Confirmation 87.5kHz 1.4 to 2.4V Confirmation 108kHz 2.7 to 3.7V

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on level meter. L1 87.5MHz CT1 108MHz

Frequency Coverage Adjustment

Connect Location :

level mete

47K

Ω

set

–

LINE OUT

Adjustment Location : Tuner board (See page 18)

• Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors.

Adjust for a maximum reading on level meter.

MW FREQUENCY COVERAGE ADJUSTMENT

Adjust part Frequency display

L5 531kHz

Confirmation 1,611kHz

Adjust for a maximum reading on level meter. L 3 621kHz CT2 1,404kHz

AM IF ADJUSTMENT

T1 450kHz

reading on digital

voltmeter.

Adjustment value: 1.0V

Standaed value: 0.7 to 1.3V

5.1 to 5.9V

MW TRACKING ADJUSTMENT

(SIDE B)

Digital voltmeter

+ —

100K

Ω

JW4

(VT)

ZS-M30

Adjustment Location:

L3 : MW Tracking Adjustment

[TUNER BOARD]

(Component side)

CT2 : MW Tracking Adjustment

CT3 : LW Tracking Adjustment

CT4 : LW Frequency Coverage Adjustment

L4 : LW Tracking Adjustment

L1 : FM Tracking Adjustment

CT1 : FM Tracking Adjustment

T1 : AM IF Adjustment

L5 : MW Frequency Coverage Adjustmen

L6 : FM IF Adjustment

5-2. MD SECTION

1. PARTS REPLACEMENT AND ADJUSTMENT

• Check and adjust the mechanism deck as follows.

The procedure changes according to the part replaced.

• Laser power check

• Focus bias check

• C PLAY check

• Self-recording/playback check

Parts Replacement and Repair

ZS-M30

• Abbreviation OP : Optical pick-up OWH : Overwrite head

Check the sled and spindle mechanisms. Other causes can be suspected.

Has the OWH been replaced?

Has OP, IC603, IC502, or IC504 been replaced?

YES

Initial setting of the adjustment value

Has OP or IC603 been replaced?

YES

IOP information recording (IOP value labeled on OP)

YES

Has IC603 or D501 been replaced?

YES

Temperature compensation offset adjustment

• Laser power adjustment

• EF balance adjustment

• Focus bias adjustment

• Error rate adjustment

• Focus bias check

• Auto gain adjustment

ZS-M30

2. PRECAUTIONS FOR CHECKING LASER DIODE EMISSION

To check the emission of the laser diode during adjustments, never view directly from the top as this may lose your eye-sight.

3. PRECAUTIONS FOR USE OF OPTICAL PICK-UP (KMS-260B)

As the laser diode in the optical pick-up is easily damaged by static electricity, solder the laser tap of the flexible board when using it. Before disconnecting the connector, desolder first. Before connectingthe connector, be careful not to remove the solder. Also take adequate measures to prevent damage by static electricity. Handle the flexible board with care as it breaks easily.

pick- up

laser tap

flexible boar

Optical pick-up flexible board

4. PRECAUTIONS FOR ADJUSTMENTS

1. When replacing the following parts, perform the adjustments

and checks with in the order shown in the following table.

BD Board

Recording of IOP information (Value written in the pick-up)

2.Temperature compensation offset adjustment

3.Laser power adjustment

4.EF balance adjustment

Optical

Pick-up

IC603 D501 IC502, IC504 IC506

4. Use the following tools and measuring device.

• Check Disc (MD) TDYS-1 (Part No. 4-963-646-01)

• Test Disc (MDW-74/AU-1) (Part No. 8-892-341-41)

• Laser power meter LPM-8001 (Part No. J-2501-046-A) or MD Laser power meter 8010S (Part No. J-2501-145-A)

• Oscilloscope (Measure after performing CAL of prove)

• Digital voltmeter

• Thermometer

5. When observing several signals on the oscilloscope, etc., make sure that VC and ground do not connect inside the oscilloscope. (VC and ground will become short-circuited)

6. Using the above jig enables the waveform to be checked with-out the need to solder. (Refer to Service Note on page 3)

7. As the disc used will affect the adjustment results, make sure that not dusts nor fingerprints are attached to it.

Laser Power Meter

When performing laser power checks and adjustment (electrical adjustment), use of the new MD laser power meter 8010S (Part No. J-2501-145-A) instead of the conventional laser power meter is con-

venient.

It sharply reduces the time and trouble to set the laser power meter sensor onto the objective lens of optical pick-up.

5. CREATING CONTINUOUSLY-RECORDED DISC

* This disc is used in focus bias adjustment and error rate check.

The following describes how to create a continuous recording disc.

1. Insert a disc (blank disc) commercially available.

2. Turn the JOG dial to display “CREC MODE”.

3. Press the YES/ENTER button again to display “CREC MID”.

Display “CREC (0300)” and start to recording.

4. Complete recording within 5 minutes.

5. Press the NO/CANCEL button and stop recording.

6. Press the Z (MD) button and remove the disc.

The above has been how to create a continuous recorded data for the focus bias adjustment/check and MO error rate check.

Note:

• Be careful not to apply vibration during continuous recording.

5.Focus bias adjustment

6.Error rate check

2. Set the test mode when performing adjustments. After completing the adjustments, release the test mode. Perform the adjustments and checks in “group S” of the test mode.

3. Perform the adjustments to be needed in the order shown.

ZS-M30

)

6. CHECK PRIOR TO REPAIRS

These checks are performed before replacing parts according to “approximate specifications” to determine the faulty locations. For details, refer to “Checks Prior to Parts Replacement and Adjustments”(See page 4).

6-1. Laser Power Check

Connection:

laser power mete

Optical pick-up objective lens

digital voltmeter

TP502 (I+3V)

TP503 (IOP)

MD BOARD (SIDE B)

R622

C607

L503

C611

R633

Q504

R505

R517

Q502

R508

Q505

R518

Q501

C519

R502

C508

C520

R510

C517

C502

L501

C522

40 45

R509

C506

3035

IC502

R514

TP502 (I+3V)

L506

R513

1012

Q507

C511

R511

(TE)

24 20

15 13

Q503

TP503

(IOP)

R516

Q506

C505

C512

C521

C518

R515

R519

R512

R503

R504

(Optical pick-up label)

KMS260B

27X40 B0825

lOP=82.5 mA in this case lOP (mA) = Digital voltmeter reading (mV)/3.3 (

Ω

5. Press the NO/CANCEL button to display “LDPWR CHECK” and stop the laser emission. (The NO/CANCEL button is effective at all times to stop the laser emission)

Note 1: After step 4, each time the YES/ENTER button is pressed,

the display will be switched “LD 0.7 mW $ ”, “LD 6.2 mW $ ”, and “LD WP $ ”. Nothing needs to be performed here.( = correction)

6-2. Focus Bias Check

Change the focus bias and check the focus tolerance amount.

Checking Procedure:

1. Load the test disc (MDW-74/AU-1).

2. Turn the JOG dial to display “CPLAY MODE”.

3. Press the YES/ENTER button twice to display “CPLAY MID”.

4. Press the NO/CANCEL button when “C1 =

AD = ”

is displayed.

5. Turn the JOG dial to display “FBIAS CHECK”.

6. Press the YES/ENTER button to display “ / c = ”. The first four digits indicate the C1 error rate, the two digits after (( / )) indicate ADER, and the 2 digits after “c =” indicate the focus bias value. Check that the C1 error is below 50 and ADER is below 2.

7. Press the YES/ENTER button to display “ / b = ”. Check that the C1 error is about 200 and ADER is below 2.

8. Press the YES/ENTER button to display “ / a = ”. Check that the C1 error is about 200 and ADER is below 2.

9. Press the NO/CANCEL button, then press the Z (MD) button and take out the test disc.

Checking Procedure:

1. Set the laser power meter on the objective lens of the optical

pick-up. (When it cannot be set properly, press the m but-ton

or M button to move the optical pick-up) Connect the digital voltmeter to TPO 502 (I+3 V) and TP503 (IOP) on the MD board.

2. Turm the JOG dial to display “LDPWR CHECK”.

3. Press the YES/ENTER button once to display “LD 0.9 mW $ ”. Check that the reading of the laser power meter become

0.80 to 0.96 mW.

4. Press the YES/ENTER button once more to display “LD 7.0

mW $ ”. Check that the reading the laser power meter and digital voltmeter satisfy the specified value.

Specified Value:

Laser power meter reading : 6.8 - 7.2 mW Digital voltmeter reading : Value on the optical pick-up label

± 10 %

6-3. C PLAY Check

MO Error Rate Check

Checking Procedure:

1. Load the test disc (MDW-74/AU-1).

2. Turn the JOG dial to display “CPLAY MODE”.

3. Press the YES/ENTER button to display “CPLAY MID”.

4. The display changes to “C1 = AD = ”.

5. If the C1 error rate is below 80, check that ADER is below 2.

6. Press the NO/CANCEL button to stop playback, then press

the Z (MD) button and take out the test disc.

CD Error Rate Check

Checking Procedure:

1. Load the check disc (MD) TDYS-1.

2. Turn the JOG dial to display “CPLAY MODE”.

3. Press the YES/ENTER button twice to display “CPLAY MID”.

4. The display changes to “C1 =

AD = ”.

5. Check that the C1 error rate is below 50.

6. Press the NO/CANCEL button to stop playback, then press

the Z (MD) button and take out the check disc.

ZS-M30

6-4. Self-Recording/playback Check

Prepare a continuous recording disc using the unit to be repaired and check the error rate.

Checking Procedure:

1. Load a recordable disc (blank disc).

2. Turn the JOG dial to display “CREC MODE”.

3. Press the YES/ENTER button to display “CREC MID”.

4. When recording starts, lights up “ REC ” and display “CREC (@@@@)” (@@@@ is the address).

5. About 1 minute later, press the NO/CANCEL button to stop continuous recording.

6. Turn the JOG dial to display “CPLAY MODE”.

7. Press the YES/ENTER button to display “CPLAY MID”.

8. “C1 = AD = ” will be displayed.

9. Check that the C1 error becomes below 80 and the ADER below 2.

10.Press the NO/CANCEL button to stop play back, then press the Z (MD) button and take out the disc.

Note: After the TEST MODE is entered, insert the disc.

7. TEMPERATURE COMPENSATION OFFSET

ADJUSTMENT

Save the temperature data at that time in the non-volatile memory

as 25 °C reference data.

Note:

1. Usually, do not perform this adjustment.

2. Perform this adjustment in an ambient temperature of 22 °C to 28 °C.

Perform it immediately after the power is turned on when the internal temperature of the unit is the same as the ambient tem

perature of 22 °C to 28 °C.

3. When D501 has been replaced, perform this adjustment after the tem-perature of this part has become the ambient tempera ture.

Adjusting Procedure:

1. Turn the JOG dial to display “TEMP ADJUST”.

2. Press the YES/ENTER button to select the “TEMP ADJUST” mode.

3. “TEMP = ” and the current temperature data will be displayed.

4. To save the data, press the YES/ENTER button. When not saving the data, press the NO/CANCEL button.

5. When the YES/ENTER button is pressed, “TEMP = SAVE” will be displayed and turned back to “TEMP ADJUST” display then. When the NO/CANCEL button is pressed, “TEMP ADJUST” will be displayed immediately.

Specified Value:

The “TEMP = ” should be within “E0 - EF”, “F0 - FF”, “00 0F”,“10 - 1F” and “20 - 2F”.

8. LASER POWER ADJUSTMENT

Connection:

laser power mete

Optical pick-up objective lens

digital voltmeter

TP502 (I+3V)

TP503 (IOP)

MD BOARD (SIDE B)

R622

C607

L503

C611

R633

Q504

R505

R517

Q502

Q505

R508

R518

Q501

C520

C522

36 37 40

C519

45 48

C517

R502

C502

R510

R509

C508

C506

L501

3035

IC502

R514

TP502 (I+3V)

L506

R513

Q507

1012

C511

R511

(TE)

24 20

15 13

Q503

TP503

(IOP)

R516

Q506

C505

C512

C521

C518

R515

R519

R512

R503

R504

Adjusting Procedure:

1. Set the laser power meter on the objective lens of the optical

pick-up. (When it cannot be set properly, press the m but-ton or M button to move the optical pick-up) Connect the digital voltmeter to TP502 (I+3 V) and TP503 (IOP) on the MD board.

2. Turn the JOG dial to display “LDPWR ADJUST”. (Laser power: For adjustment)

3. Press the YES/ENTER button once to display “LD 0.9 mW

”.

4. Turn the JOG dial so that the reading of the laser power meter becomes 0.85 to 0.91 mW. Press the YES/ENTER button after setting the range knob of the laser power meter, and save the adjustment results. (“LD SAVE $ ” will be displayed for a moment)

5. Then “LD 7.0 mW $ ” will be displayed.

6. Turn the JOG dial and adjust so that the reading on the laser power meter is 6.9 to 7.1 mW. Press the YES/ENTER button to save the setting.

Note: Do not perform the emission with 7.0 mW more than 15 sec

onds continuously.

7. Turn the JOG dial to display “LDPWR CHECK”.

8. Press the YES/ENTER button once to display “LD 0.9mW $ ”. Check that the reading of the laser power meter become

0.85 to 0.91 mW.

9. Press the YES/ENTER button once more to display “LD 7.0 mW $ ”. Check that the reading the laser power meter and digital voltmeter satisfy the specified value. Note down the digital voltmeter reading value.

ZS-M30

)

R542

Specified Value:

Laser power meter reading : 7.0 ± 0.2 mW

Digital voltmeter reading : Value on the optical pick-up label

± 10%

(Optical pick-up label)

KMS260B

27X40 B0825

lOP=82.5 mA in this case lOP (mA) = Digital voltmeter reading (mV)/3.3 (

Ω

10. Press the NO/CANCEL button to display “LDPWR CHECK” and stop the laser emission. (The NO/CANCEL button is effective at all times to stop the laser emission)

Note 1: After step 9, each time the YES/ENTER button is pressed, the

display will be switched “LD 0.7 mW $ ”, “LD 6.2 mW $ ”, and “LD WP $ ”. Nothing needs to be performed here. ( = correction)

9. EF BALANCE ADJUSTMENT

Note 1: Data will be erased during MO reading if a recorded

disc is used in this adjustment.

Note 2: If the traverse waveform is not clear, connect the

oscilloscope as shown in the following figure so that it can be seen more clearly.

oscilloscope (DC range)

Connection:

oscilloscope (DC range)

[MD BOARD]

L509

R518

C519

R538

TP505

C520

(RF)

C550

C522

37 40

C546

TP506

(VC)

3035

IC502

R540

(SIDE B)

R532

R533

R535

R531

R525

C521

C526

R519

R524

TP504

(TE)

24 20

Adjusting Procedure:

1. Connect an oscilloscope to TP504 (TE) and TP506 (VC) on the MD board.

2. Load a disc (any available on the market). (Refer to Note 1)

3. Press the M button to move the optical pick-up outside the pit.

4. Turn the JOG dial to display “EFBAL ADJUST”.

5. Press the YES/ENTER button to display “EFB = MO-R”. (Laser power READ power/Focus servo ON/tracking servo OFF/ spindle (S) servo ON)

6. Turn the JOG dial so that the waveform of the oscilloscope be comes the specified value. (When the JOG dial is turned, the of “EFB = ” changes and the waveform changes ) In this adjust-ment, wave form var ies at intervals of approx. 2 %. Adjust the waveform so that the specified value is satisfied as much as possible. (Read power traverse adjustment)

Traverse Waveform

Ω

MD BOARD

TP504

(TE)

24 20

(SIDE B)

R532

R535

R531

C521

R533

R525

C526

R524

R519

7. Press the YES/ENTER button and save the result of adjust-

8. Turn the JOG dial so that the waveform of the oscilloscope be

L509

R518

C519

R538

TP505

C520

(RF)

C550

C522

C546

TP506

(VC)

3035

IC502

R540

Specification : A = B

ment to the non-volatile memory. (“EFB = SAVE” will be displayed for a moment. Then “EFB = MO-W” will be displayed)

comes the specified value. (When the JOG dial is turned, the of “EFB- ” changes and the waveform changes) In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible. (Write power traverse adjustment)

Traverse Waveform

Specification : A = B

ZS-M30

9. Press the YES/ENTER button, and save the adjustment re sults in the non-volatile memory. (“EFB = SAVE” will be displayed for a moment)

10. “EFB =

MO-P” will be displayed. The optical pick-up moves to the pit area automatically and servo is imposed.

11. Turn the JOG dial until the waveform of the oscilloscope moves closer to the specified value. In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.

Traverse Waveform

Specification : A = B

12. Press the YES/ENTER button, and save the adjustment re-

sults in the non-volatile memory. (“EFB =

SAVE” will be displayed for a moment) Next “EFBAL ADJUST” is displayed. The disc stops rotating automatically.

13. Press the Z (MD) button and take out the disc.

14. Load the check disc (MD) TDYS-1.

15. Press the YES/ENTER button to display “EFB =

CD”.

Servo is imposed automatically.

16. Turn the JOG dial so that the waveform of the oscilloscope moves closer to the specified value. In this adjustment, waveform varies at intervals of approx. 2%. Adjust the waveform so that the specified value is satisfied as much as possible.

10. FOCUS BIAS ADJUSTMENT

Adjusting Procedure:

1. Load the continuously-recorded disc. (Refer to “5. CREATING CONTINUOUSLY-RECORDED DISC”)

2. Turn the JOG dial to display “CPLAY MODE”.

3. Press the YES/ENTER button to display “CPLAY MID”.

4. Press the NO/CANCEL button when “C1 = AD = ” is displayed.

5. Turn the JOG dial to display “FBIAS ADJUST”.

6. Press the YES/ENTER button to display “ / a = ”. The first four digits indicate the C1 error rate, the two digits after “ / ” indicate ADER, and the 2 digits after “a =” indicate the focus bias value.

7. Turn the JOG dial clockwise and find the focus bias value at which the C1 error rate becomes about 200 (Refer to Note 2).

8. Press the YES/ENTER button to display “ / b = ”.

9. Turn the JOG dial counterclockwise and find the focus bias value at which the C1 error rate becomes about 200.

10. Press the YES/ENTER button to display “ / c = ”.

11. Check that the C1 error rate is below 50 and ADER is 00.

Then press the YES/ENTER button.

12. If the “( )” in “ - - ( )” is above 20, press the

YES/ENTER button. If below 20, press the NO/CANCEL button and repeat the adjustment from step 2.

13. Press the Z (MD) button and take out the disc.

Note 1: The relation between the C1 error and focus bias is as shown in

the following figure. Find points A and B in the following figure using the above adjustment. The focal point position C is automatically calculated form points A and B.

Note 2: As the C1 error rate changes, perform the adjustment using the

average value.

C1 error

about

Traverse Waveform

Specification : A = B

17. Press the YES/ENTER button, display “EFB = SAVE” for a moment and save the adjustment results in the non-volatile memory. Next “EFBAL ADJUST” will be displayed.

18. Press the Z (MD) button and take out the disc.

Focus bias valu (F.BIAS)

11. ERROR RATE CHECK

11-1. CD Error Rate Check

Checking Procedure:

1. Load the check disc (MD) TDYS-1.

2. Turn the JOG dial and display “CPLAY MODE”.

3. Press the YES/ENTER button twice and display “CPLAY MID”.

4. The display changes to “C1 = AD = ”.

5. Check that the C1 error rate is below 20.

6. Press the NO/CANCEL button to stop playback, then press the Z (MD) button and take out the check disc.

11-2. MO Error Rate Check

Checking Procedure:

1. Load the continuously-recorded disc. (Refer to “5. CREATING CONTINUOUSLY-RECORDED DISC”)

2. Turn the JOG dial to display “CPLAY MODE”.

3. Press the YES/ENTER button to display “CPLAY MID”.

4. The display changes to “C1 =

AD = ”.

5. If the C1 error rate is below 50, check that ADER is 00.

6. Press the NO/CANCEL button to stop playback, then press the Z (MD) button and take out the test disc.

ZS-M30

test mode 2

Press the

(CD) button

Press the

(CD) button

3. STOP mode 2

4. FOCUS mode

5. ALL SERVO ON mode

LPC OFF

mode

7. TRACKING

GAIN UP mode

High speed

mode

Press the

(CD) button

Press the

(CD) button

Press the x (CD) button.

Press the u ,(CD) button.

Press the x (CD) button.

Press the u ,(CD) button.

test mode 1

Enter the CD test mode

CD test mode

12. FOCUS BIAS CHECK

Change the focus bias and check the focus tolerance amount.

Checking Procedure:

1. Load the continuously-recorded disc. (Refer to “5. CREATING CONTINUOUSLY-RECORDED DISC”)

2. Turn the JOG dial to display “CPLAY MODE”.

3. Press the YES/ENTER button twice to display “CPLAY MID”.

4. Press the NO/CANCEL button when “C1 = AD = ” is displayed.

5. Turn the JOG dial to display “FBIAS CHECK”.

6. Press the YES/ENTER button to display “ / c = ”. The first four digits indicate the C1 error rate, the two digits after “ / ” indicate ADER, and the 2 digits after “c =” indicate the focus bias value. Check that the C1 error is below 50 and ADER is below 2.

7. Press the YES/ENTER button and display “ / b = ”. Check that the C1 error is about 200 and ADER is below 2.

8. Press the YES/ENTER button and display “ / a = ”. Check that the C1 error is about 200 and ADER is below 2.

9. Press the NO/CANCEL button, then press the Z (MD) button and take out the disc.

Note 1: If the C1 error and ADER are above other than the speci-

fied value at points A (step 8. in the above) or B (step 7. in the above), the focus bias adjustment may not have been carried out properly. Adjust perform the beginning again.

5-3. CD SECTION

Set the CD test mode when performing confirmations. After completing the confirmation, release the CD test mode.

In the CD test mode, the set works as following sequence.

CD test mode sequence:

ZS-M30

(VC)

1. Entering the CD test Mode

1. Press POWER button to turn on the power.

2. Place CD into tray (TOC data of the CD will be read).

3. Press and hold EDIT button, then press CD buttons in the following order: u (CD)t x (CD)t u (CD)t x (CD)

4. All LED and LCD segments start flashing.

5. Press any button to stop flashing of LED and LCD segments and to shoe the following display.

Display

PGM

6. Press x (CD)button to enter CD test mode (STOP MODE 1) and to show the following display.

Display

PGM

2. STOP Mode 2

1. Press the x (CD) button to enter the STOP mode 2, and dis-

play as below.

Display

2. Connect an oscilloscope to TP (TE) and TP (VC) on the CD board.

Connection:

oscilloscope (DC range)

TP (VC)

JW715

Q701

TP (TE)

Q702

R783

R786

JW724

IC702

C716

R713

JW720

TP(TE)

C715

R715

C714

C720

(RF)

[CD BOARD]

0 JW7

JW701

R716 C721

C722

R717

R718

JW719

R722 R721

(SIDE B)

C731

C730

C726 C723 R719

3. Confirm that the traverse level of waveform satisfy specified value as follows.

Traverse Waveform

traverse level:

0.65 to 1.20 Vp-

A = B

Specified Value:

traverse level: 0.65 to 1.20 Vp-p

PGM

2. Press the M and m button to move the optical pick-up to

position of the track where signal is recorded.

3. FOCUS Mode (Traverse Confirmation)

1. Press the u (CD ) button to enter the FOCUS mode and dis

play as below. (Focus servo ON. CLV-S, tacking and sled servo OFF)

Display

F-

PGM

4. ALL SERVO ON Mode 1

(RF Level and Jitter Confirmation 1)

1. Press the u (CD) button four times to enter the ALL SERVO

ON mode 1 (start playback the disc) and display as below. (All servo ON. LPC ON)

Display

P-

PGM

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