SONY MZDH710 - Service Manual Immediate Download

SERVICE MANUAL

PORTABLE MD PLAYER

US Model

Canadian Model

SPECIFICATIONS

MZ-DH710

Ver. 1.0 2005.04

Model Name Using Similar Mechanism

NEW

MD Mechanism Type

MT-MZNH900-181

Optical Pick-up Name

ABX-U

9-879-660-01

2005D05-1

Sony Corporation

Personal Audio Group

Published by Sony Engineering Corporation

Continued on next page

US and foreign patents licensed from Dolby Laboratories.

· SonicStage and SonicStage logo are trademarks or registered trademarks

of Sony Corporation.

· MD Simple Burner, OpenMG, "Magic Gate", "MagicGate Memory

Stick", "Memory Stick", Hi-MD, Net MD, ATRAC, ATRAC3,

ATRAC3plus and their logos are trademarks of Sony Corporation.

· Microsoft, Windows, Windows NT and Windows Media are trademarks

or registered trademarks of Microsoft Corporation in the United States

and /or other countries.

· IBM and PC/AT are registered trademarks of International Business

Machines Corporation.

· Macintosh is a trademark of Apple Computer, Inc. in the United States

and/or other countries.

·Pentium is a trademark or registered trademark of Intel Corporation.

· All other trademarks and registered trademarks are trademarks or

registered trademarks of their respective holders.

·TM and ® marks are omitted in this manual.

Gracenote. This product and service may practice one or more of the

following U.S. Patents: #5,987,525; #6,061,680; #6,154,773, #6,161,132,

#6,230,192, #6,230,207, #6,240,459, #6,330,593, and other patents issued

or pending. Services supplied and/or device manufactured under license

for following Open Globe, Inc. United States Patent 6,304,523. Gracenote

is a registered trademarks of Gracenote. The Gracenote logo and logotype,

and the "Powered by Gracenote" logo are trademarks of Gracenote.

Audio playing system

MiniDisc digital audio system

Laser diode properties

Material: GaAlAs

Wavelength:

= 790 nm

Emission duration: continuous

Laser output: less than 44.6

µW

(This output is the value measured at a distance

MZ-DH710

Recording and playback time

List of the recording time for each disc

When using a disc in Hi-MD mode

When using a disc in MD mode

When transferring from

the computer

Recording time1)2)

1) Approximate time

2) When transferring 4-minute tracks

Codec/Bit rate

1GB Hi-MD

disc

80-minute

standard

disc

74-minute

standard

disc

60-minute

standard

disc

Linear PCM/1.4Mbps

1 hour and

34 minutes

28 minutes

26 minutes

21 minutes

ATRAC3plus/256kbps

7 hours and

55 minutes

2 hours and

20 minutes

2 hours and

10 minutes

1 hour and

40 minutes

ATRAC3plus/64kbps

34 hours

10 hours and

10 minutes

9 hours and

20 minutes

7 hours and

40 minutes

ATRAC3plus/ 48 kbps

45 hours

13 hours and

30 minutes

12 hours and

30 minutes

10 hours

ATRAC3/132kbps

16 hours and

30 minutes

4 hours and

50 minutes

4 hours and

30 minutes

3 hours and

40 minutes

ATRAC3/105kbps

20 hours and

40 minutes

6 hours and

10 minutes

5 hours and

40 minutes

4 hours and

40 minutes

ATRAC3/66kbps

32 hours and

40 minutes

9 hours and

50 minutes

9 hours

7 hours and

20 minutes

MP3/128kbps

17 hours

5 hours

4 hours and

30 minutes

3 hours and

30 minutes

When transferring from the

computer

Recording time1)2)

1) Approximate time

2) When transferring 4-minute tracks

Codec/Bit rate

80-minute

standard disc

74-minute

standard disc

60-minute

standard disc

ATRAC(stereo)/292kbps

80 minutes

74 minutes

60 minutes

ATRAC3/132, 105kbps

2 hours and

40 minutes

2 hours and

28 minutes

2 hours

ATRAC3/66kbps

5 hours and

20 minutes

4 hours and

56 minutes

4 hours

Dimensions

Approx. 83.6

× 29.5 × 77.0 mm (w/h/d)

(33/8

× 13/16 × 31/8 in.)(excluding projecting

parts and controls)

Mass

Approx

Supplied accessories

Earphones

Dedicated USB cable

CD-ROM (SonicStage/MD Simple Burner)*

Recordable disc

* Do not play a CD-ROM on an audio CD player.

. 107 g (3.8 oz.) (the player only)

Design and specifications are subject to change

without notice.

Revolutions

350 rpm to 3,000 rpm (CLV)

Error correction

Hi-MD:

LDC (Long Distance Code)/BIS (Burst

Indicator Subcode)

MD:

ACIRC (Advanced Cross Interleave Reed

Solomon Code)

Sampling frequency

44.1 kHz

Audio formats supported by this

player

Linear PCM (44.1 kHz/16 bit)

ATRAC3plus (Adaptive TRansform Acoustic

Coding 3 plus)

AT RAC3

AT RAC

MP3 (MPEG-1 Audio Layer-3/Sampling

frequency 44.1 kHz/Bit rate 32 - 320 kbps

(constant/variable bit rate))

Modulation system

Hi-MD:

1-7RLL (Run Length Limited)/PRML

(Partial Response Maximum Likelihood)

MD:

EFM (Eight to Fourteen Modulation)

Frequency response

20 to 20,000 Hz

± 3 dB

Outputs

: stereo mini-jack

Maximum output (DC)

Headphones:

5 mW + 5 mW (16

)

Power requirements

One LR6 (size AA) alkaline battery (not

supplied)

Operating temperature

°C (+41°F) to +35°C (+95°F)

Battery operation time

When playing continuously in MD mode

(Unit: approx. hours) (JEITA)

Battery life1)

When playing continuously in Hi-MD mode

(Unit: approx. hours) (JEITA2))

1) When using a new Sony LR6 (size AA) alkaline dry battery (produced in Japan)

2) Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries

Association) standard.

Disc type

Linear PCM

Hi-SP

Hi-LP

MP33)

3) Tracks transferred at 128 kbps.

1GB Hi-MD disc

9.5

16.5

19.5

19.0

60/74/80-minute

standard disc

8.5

16.0

19.0

18.5

Disc type

LP2

LP4

60/74/80-minute

standard disc

18.0

21.5

23.5

MZ-DH710

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.

Flexible Circuit Board Repairing

· Keep the temperature of the soldering iron around 270 °C

during 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.

CAUTION

Use of controls or adjustments or performance of procedures

other than those specified herein may result in hazardous radiation

exposure.

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.

TABLE OF CONTENTS

SERVICING NOTES ............................................... 4

GENERAL ................................................................... 5

DISASSEMBLY

3-1.

Disassembly Flow ...........................................................

3-2.

Case (Lower) Section ......................................................

3-3.

MAIN Board ....................................................................

3-4.

Case (Upper) Section .......................................................

3-5.

Mechanism Deck Section (MT-MZNH900-181),

MD Standard Pin .............................................................

3-6.

Set Chassis Assy ..............................................................

3-7.

Gear (BSA), Gear (SB) ...................................................

3-8.

OP Service Assy .............................................................. 10

3-9.

DC Motor SSM18D/C-NP (Spindle) (M701),

DC Motor (Sled) (M702),

DC Motor Unit (Over Write Head Up/Down) (M703) ... 10

3-10. Holder Assy ..................................................................... 11

3-11. Position of Ferrite Core ................................................... 11

TEST MODE .............................................................. 12

ELECTRICAL ADJUSTMENTS .......................... 16

DIAGRAMS

6-1.

Block Diagram MD SERVO Section ........................ 21

6-2.

Block Diagram POWER SUPPLY Section ............... 22

6-3.

Printed Wiring Board MAIN Section (1/2) ............... 24

6-4.

Printed Wiring Board MAIN Section (2/2) ............... 25

6-5.

Schematic Diagram MAIN Section (1/8) .................. 26

6-6.

Schematic Diagram MAIN Section (2/8) .................. 27

6-7.

Schematic Diagram MAIN Section (3/8) .................. 28

6-8.

Schematic Diagram MAIN Section (4/8) .................. 29

6-9.

Schematic Diagram MAIN Section (5/8) .................. 30

6-10. Schematic Diagram MAIN Section (6/8) .................. 31

6-11. Schematic Diagram MAIN Section (7/8) .................. 32

6-12. Schematic Diagram MAIN Section (8/8) .................. 33

EXPLODED VIEWS

7-1.

Case (Lower) Section ...................................................... 44

7-2.

Case (Upper) Section ....................................................... 45

7-3.

Chassis Section ................................................................ 46

7-4.

Mechanism Deck Section (MT-MZNH900-181) ............ 47

ELECTRICAL PARTS LIST ................................ 48

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR

LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES

PIÈCES

SONT

CRITIQUES

POUR

SÉCURITÉ

FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS

QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT

DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS

PUBLIÉS PAR SONY.

MZ-DH710

SECTION 1

SERVICING NOTES

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.

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 objective lens.

NOTES ON HANDLING THE OPTICAL PICK-UP

BLOCK OR BASE UNIT

OPERATION CHECK WHEN THE MAIN BOARD IS

REMOVED

In making an operation check with the MAIN board removed from

the set, short the SL894 of the MAIN board with the solder before

starting the operation check.

Note: Be sure to remove the solder used for shortcircuit after the repaire

completed.

SL894

MAIN BOARD (Conductor Side)

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead-

free mark (LF) indicating the solder contains no lead.

(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

· Unleaded solder melts at a temperature about 40 °C higher

than ordinary solder.

Ordinary soldering irons can be used but the iron tip has to be

applied to the solder joint for a slightly longer time.

Soldering irons using a temperature regulator should be set to

about 350

°C.

Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

· Strong viscosity

Unleaded solder is more viscou-s (sticky, less prone to flow)

than ordinary solder so use caution not to let solder bridges

occur such as on IC pins, etc.

· Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may

also be added to ordinary solder.

Providing the required system environment

The following system environment is required in order to use the SonicStage Ver. 3.0/MD

Simple Burner Ver. 2.0 software for the MD Walkman.

This software is not supported by the following environments:

· OSs other than the indicated above

· Personally constructed PCs or operating systems

· An environment that is an upgrade of the original manufacturer-installed operating system

· Multi-boot environment

· Multi-monitor environment

· Macintosh

· We do not ensure trouble-free operation on all computers that satisfy the system requirements.

· The NTFS format of Windows XP/Windows 2000 Professional can be used only with the standard

(factory) settings.

· For Windows 2000 Professional users, install Service Pack 3 or later version before using the

software.

· We do not ensure trouble-free operation of the system suspend, sleep, or hibernation function on all

computers.

System requirements

Computer

IBM PC/AT or Compatible

·CPU: Pentium III 450 MHz or higher

·Hard disk drive space: 200 MB or more (1.5 GB or more is

recommended) (The amount space will vary according to Windows

version and the number of music files stored on the hard disk.)

·RAM: 128 MB or more

Others

·CD drive (capable of digital playback by WDM) (A CD-R/RW drive

is necessary for CD writing)

·Sound Board

·USB port

Operating

System

Factory installed:

Windows XP Media Center Edition 2005/Windows XP Media Center

Edition 2004/Windows XP Media Center Edition/Windows XP

Professional/Windows XP Home Edition/Windows 2000 Professional/

Windows Millennium Edition/Windows 98 Second Edition

Display

High Color (16bit) or higher, 800

600 dots or better (1024

768 dots

or better is recommended)

Others

· Internet access: for Web registration, EMD services and CDDB

·Windows Media Player (version 7.0 or higher) installed for playing

WMA files

Notes

NOTES ON REPLACEMENT OF CSP (CHIP SIZE

PACKAGE) IC

Replacement of SN761059AZQLR (IC501), SC901585VAR2

(IC601) and CXD2681-225GG (IC801) used in this set requires a

special tool.

MZ-DH710

SECTION 2

GENERAL

This section is extracted from

instruction manual.

Looking at controls

The player

A OPEN switch

B Display window

C DOWNLOAD button

This button allows you to record

music tracks from an audio CD in the

CD drive of your computer to an MD

Walkman using the supplied MD

Simple Burner software.

D X (pause) button

E ·SEARCH/

MENU button

Press lightly to go to the SEARCH

setting mode. Press for 2 seconds or

more to go to the MENU setting mode.

F x (stop) · CANCEL button

G Jog dial

H 5-way control key

Operation

Function

Press NENT 1)

1) There are tactile dots beside the NENT

and

VOL + buttons.

play, enter

Press towards

find the beginning

of the previous

track, rewind

Press towards

find the beginning

of the next track,

fast forward

Press towards

VOL +1) or

VOL .

volume

I Battery compartment (at the bottom)

USB cable connecting jack

K HOLD switch

Slide the switch in the direction of the

arrow to disable the buttons on the

player. To prevent the buttons from

being accidentally operated when you

carry the player, use this function.

L i (earphones) jack

The display window of the player

A Character information display

Displays the disc and track names,

date, error messages, track numbers,

etc.

B Hi-MD/MD indication

"Hi-MD" lights up when the

operation mode of the player is in Hi-

MD mode and "MD" lights up when

the operation mode is in MD mode.

C REC indication

Lights up during file transfers from

the computer. When flashing, the

player is in record standby mode.

D Battery indication

Shows the approximate remaining

battery power. If the battery is weak,

the indication becomes empty and

starts flashing.

E Disc indication

Shows that the disc is rotating for

playing.

F Track mode (PCM, Hi-SP, Hi-LP, SP,

LP2, LP4, MONO) indication

G Sub play mode/Repeat play

indications

Shows the selected Sub play mode

(single-track play, shuffle play, etc.) or

Repeat play.

H Main play mode indications

Shows the selected main play mode

(group play, bookmark play, etc.).