Sony MZE-909 Service manual

MZ-E909

SERVICE MANUAL

Ver 1.3 2002.06 with SUPPLEMENT-1

US and foreign patents licensed from Dolby Laboratories Licensing Corporation

SPECIFICATIONS

Audio playing system

MiniDisc digital audio system

Laser diode properties

Material: GaAlAs Wavelength: λ = 790 nm Emission duration: continuous Laser output: less than 44.6 µW* * This output is the value measured at a distance of 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.

Revolutions

Approx. 300 rpm to 2,700 rpm

Error correction

ACIRC (Advanced Cross Interleave Reed Solomon Code)

Sampling frequency

44.1 kHz

Coding

ATRAC (Adaptive TRansform Acoustic Coding) ATRAC3: LP2 ATRAC3: LP4

Modulation system

EFM (Eight to Fourteen Modulation)

Number of channels

2 stereo channels 1 monaural channel

Frequency response

20 to 20,000 Hz ± 3 dB

Wow and Flutter

Below measurable limits

Outputs

Headphones/earphones: stereo mini-jack, maximum output level 5 mW + 5 mW (US model) load impedance 16 ohms, 3 mW + 3 mW (Other models) load impedance 32 ohms

US Model

AEP Model

E Model

Tourist Model

Model Name Using Similar Mechanism NEW MD Mechanism Type MT-MZE909-173 Optical Pick-up Mechanism Type LCX-4E

Power requirements

Nickel metal hydride rechargeable battery One NH-14WM(A) (supplied): 1.2V, 1,350 mAh One LR6 (size AA) battery (not supplied) External power jack (for the rechargeable battery): Power rating 3V DC

Battery life

Batteries SP Stereo LP2 LP4

Ni-MH 38 45 53 rechargeable battery NH-14WM(A)3) LR6 (SG) 60 70 83 Sony Alkaline dry battery 4) LR6 (SG)4) and 100 122 145

NH-14WM(A)3)

Measured with the power save function on (see

“Preserving battery power”) is on.

Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries Association) standard (using a Sony MDW-series Mini-disc).

With a fully charged battery

When using a Sony LR6 (SG) “STAMINA” alkaline dry battery (produced in Japan).

Note

The battery operation may be shorter than that specified, depending on the operating conditions, the temperature of the location, and the type of battery being used.

(Unit: Approx. hours) (JEITA 2) )

(normal) Stereo Stereo

PORTABLE MINIDISC PLAYER

9-873-304-04

Sony Corporation

Personal Audio Company Published by Sony Engineering Corporation

MZ-E909

Ver 1.1 2001.11

Dimensions

Approx. 71.1 x 77.6 x 12.5 mm (w/h/d) (2 7 / 8 x 3 1 /8 x 1 /2 in.) (not including projecting parts and controls)

Mass

Approx. 49 g (1.8 oz) (the player only) Supplied accessories Headphones/earphones with a remote control (1) Battery charging stand (1) AC power adaptor (for the supplied battery charging stand) Rechargeable battery (1) Rechargeable battery carrying case (1) Dry battery case (1) Carrying pouch (1) AC plug adaptor (1) (world model only)

US and foreign patents licensed from Dolby Laboratories.

Design and specifications are subject to change without notice.

TABLE OF CONTENTS

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

1. SERVICING NOTE...................................................... 3

2. GENERAL

Location and Function of Controls .................................... 4

3. DISASSEMBLY

3-1. “Lid ASSY, Upper”..................................................... 5

3-2. Mechanism Deck ........................................................ 5

3-3. Bracket (R) ASSY ...................................................... 6

3-4. Main Board Sub ASSY, Bracket (L) ASSY,

SW Board ............... 6

3-5. Optical Pick-up ASSY................................................ 7

4. TEST MODE.................................................................. 8

5. ELECTRICAL ADJUSTMENTS........................... 12

6. DIAGRAMS

6-1. Block Diagram.......................................................... 17

6-2. Printed Wiring Boards – Main Section (1/2) –......... 18

6-3. Printed Wiring Boards – Main Section (2/2) –......... 19

6-4. Schematic Diagram – Main Section (1/2) – ............. 20

6-5. Schematic Diagram – Main Section (2/2) – ............. 21

6-6. Printed Wiring Boards – Audio Section – ................ 22

6-7. Schematic Diagram – Audio Section –..................... 23

CAUTION

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

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.

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.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK !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.

* Replacement of CXD2671B-206GA (IC601) used in this set

requires a special tool.

7. EXPLODED VIEWS

7-1. Main Section............................................................. 26

7-2. Mechanism Deck Section ......................................... 27

8. ELECTRICAL PARTS LIST................................... 28

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 viscous (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.

MAIN BOARD SUB ASSY

• Audio board is supplied with main board sub ASSY.

• Audio board can't be moved away from main board. Give a damage when take it off forcibly.

• The part that audio board overlap with main board can't be re-

paired.

SECTION 1

SERVICING NOTE

When repairing this device with the power on, if you remove the main board, this device stops working. In this case, you work without the device stopping by fastening the hook of the Open/Close detection switch (S809).

Open/Ciose detection switch (S809)

MZ-E909

The Player

1 ./x/ 2 3 Color Info-LED 3 GROUP button 4 HOLD (Locking the control) switch 5 i (earphones) jack 6 OPEN switch 7 Terminals for charging stand/

8 VOL +/– button 9 Battery compartment

The earphones with a remote control

A B

C D

E F

1 Headphones/earphones 2 Stereo mini plug 3 X (pause) button 4 SOUND button 5 RPT/ENT (Repeat/Enter) button 6 PLAYMODE button 7 DISPLAY button 8 x (stop) button* 9 Control (./ q; Control VOL +/–

qa HOLD (Locking the control) switch qs Display window

* The stop button also operates as the enter button, depending on the function.

The display window of the remote control

ABCDE

1 Track number display 2 Charactor information display 3 Disc indication 4 Alarm indication 5 Play mode indication 6 Battery level indication 7 SOUND indication

The battery charging stand

1 Terminals for charging 2 CHARGE lamp 3 DC IN (3V jack) (at the rear)

button

dry battery case (at the bottom)

–

)

Pull and turn to adjust the volume.

H I

K L

SECTION 2

GENERAL

Playing an MD

3 Color Info-LED

> N

Find the beginning of the current track or the previous track

Find the beginning of the next track

Go backwards while playing

Go forward while playing

Pause

Remove the MD

You can turn off the beep sound. For more details, see “Turning off the beep sound.”

If you turn the control towards . on the remote control (or press . on the player) during the first track of the disc, the player goes to the beginning of the last track on the disc.

If you turn the control towards N> on the remote control (or press > N on the player) during the last track of the disc, the player goes to the beginning of the first track on the disc.

If you open the lid, the playback will begin from the beginning of the first track (except when disc information is stored to the personal disc memory or when group mode is on).

The MZ-E909 supports the newly developed DSP TYPE-R for ATRAC. It thus allows you to enjoy TYPE-R high-quality sound from MDs recorded in SP stereo on TYPE-Requipped MD decks, etc.

Note

When removing the disc, make sure to press x first, and then slide OPEN.

Viewing the display window of the remote control

Track number Track name6) or elapsed time of the track

Appears only with MDs that have been electronically labeled.

• The player can play the track recorded by 2 × or 4 × long playing mode (LP2 or LP4). Normal stereo

playback, LP2 stereo playback, LP4 stereo playback or monaural playback is automatically selected to match the audio source.

• The display on the remote control will turn off shortly after you press x.

This section is extracted from instruction manual.

Insert an MD.

Slide OPEN to open the lid.

Insert an MD.

Insert an MD with the label side facing up, pushing the MD to the direction of the arrow in the illustration.

Close the lid.

Play an MD.

VOLUME +/–

GROUP

Turn the control towards N> on the remote control (or press > N on the player) to play the disc.

A short beep sounds in the headphones/earphones when using the remote control. The LED flashes and then lights up.

Pull and turn VOL +/– on the remote control (or press VOLUME +/– on the player) to adjust the volume.

The volume indicator appears in the display, allowing you to check the volume level. After you adjust the volume, push back the control.

To stop play, press x.

Playback starts from the point you last stopped playing. To start playback from the beginning of the disc, turn and hold the control towards N> on the remote control (or hold down

The LED indicates the current operating status by the lighting up in the following colors.

When the battery power is exhausted, the LED starts flashing. For more details, see “When to replace or recharge the battery.”

LED color Operating status

Red Normal play (The LED lights up continuously) Green Group mode* (The LED lights up continuously) Orange Group skip mode* (The LED lights for about 5 seconds)

*For more details, see “Using the group function.”

> N

on the player) for 2 seconds or more.

Do this (Beeps2) in the headphones)

Turn the control towards . on the remote control once (three short beeps). (Or press . on the player once.) Turn the control towards . on the remote control repeatedly (continuous three short beeps). (Or press . on the player repeatedly.)

Turn the control towards N> on the remote control (two short beeps). Press > N on the player once.

Turn and hold the control towards . on the remote control. Hold down . on the player.

Turn and hold the control towards N> on the remote control. Hold down > N on the player.

Press X on the remote control (continuous short beeps). Press X on the remote control again to resume play.

Press x, and then slide OPEN.

VOL+

VOL–

1N>

SECTION 3

DISASSEMBLY

The equipment can be removed using the following procedure.

Set

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

3-1. “LID ASSY, UPPER”

“Lid ASSY Upper”

Screws , ES Lock

Mechsnism deck

Bracket (R) ASSY

Optical pick-up ASSY

Lid ASSY, upper

MZ-E909

Ver 1.1 2001.11

Main board sub ASSY Bracket (L) ASSY, SW board

Screws , ES loc

Bracket (L) ASSY

3-2. MECHANISM DECK

Motor flexible board

(CN551)

Screw (LL), step

Mechanism deck

Move claw away from

bracket (stop) ASSY

OP flexible board

(CN501)

Claw

Bracket (stop) ASSY

Bracket (R) ASSY

Panel, bottom

MZ-E909

Ver 1.1 2001.11

3-3. BRACKET (R) ASSY

Screw, ES lock

Screws, ES lock

Screw, ES lock

Bracket (L) ASSY

Screw, ES lock

3-4. MAIN BOARD SUB ASSY, BRACKET (L) ASSY, SW BOARD

Note : On installation of bottom panel assy, adjust the position of

both two switches (S807, S808) and two knobs (AVLS, HOLD).

SW board

Bracket (L) ASSY

Bracket (R) ASS

Panel, bottom

MAIN BOARD SUB ASSY

• Audio board is supplied with main board sub ASSY.

• Audio board can't be moved away from main board. Give a damage when take it off forcibly.

• The part that audio board overlap with main board can't be re-

paired.

Claw

Lid, battery case

Case (K), battery

Knob (HOLD)

(Audio board)

Main board sub ASS

Remove solder

(Two places)

3-5. OPTICAL PICK-UP ASSY

MZ-E909

Optical pick-up ASSY (LCX-4E)

Washer

Gear (SA)

Screw (MI 1.4)

Spring, thrust deten

MZ-E909

888

008 V1.000

1SHUFF PGM

SOUND 1 2 BASS 1 2

All on

All off

Microprocessor version display

SECTION 4

TEST MODE

4-1. GENERAL

• When entered in the TEST MODE, this set provides the Overall Adjustment mode which allows CD and MO discs to be automatically adjusted. In the Overall Adjustment mode, the system discriminates between CD and MO discs, performs adjustments in sequence automatically, and displays the faulty location if any fault is found. In the Manual mode, selected adjustments can be performed automatically.

• The attached remote control is used to operate the TEST MODE. Unless otherwise specified in the text, the key means that on the remote control.

4-2. SETTING THE TEST MODE

4-2-1. How to set the TEST MODE

To set the TEST MODE, two methods are available. 1 Solder bridge and short TAP601 (TEST) on the main board.

Then turn on the power.

MAIN BOARD (SIDE A)

R607

R601

C810

C802

C699

TAP601

SHORT: TEST MODE OPEN: NORMAL MODE

TP921

C606

C605

C610

C613

Remote control LCD

• Press and hold down X to hold the current display while the

key is being pressed.

4-2-3. How to release the TEST MODE

When method 1 was used: Turn off the power and open the solder bridge on TAP601 on the main board. Note: The solder should be removed clean. The remaining solder

may make a short with the chassis and other part.

When method 2 was used: Turn off the power. Note: If electrical adjustment (see page 11) has not been finished

completely, always start in the test mode. (The set cannot start in normal mode)

2 In the normal mode, operate the keys on the set and those on the

remote control as specified below: Turn on HOLD switch on the set. Holding down x (STOP) key on the set, press the keys on the remote control in the following sequence:

> N t > N t . t . t > N

t . t > N t . t X t X

4-2-2. Operations when the TEST MODE is set

When the TEST MODE is entered, the system switches to the display check mode within the TEST MODE. From this mode, the other Test modes can be accessed. When the TEST MODE is set, the LCD repeats a cycle of the following displays:

4-3. TEST MODE STRUCTURE

Test Mode (Display Check Mode)

key

Manual Mode

key

Overall Adjustment Mode

key

DISPLAY key

key

DISPLAY key

(Press and hold down about 3 sec)

Terminate key checking or open the top panel.

Self-diagnostic Display Mode

Sound Skip Check Result Display Mode

Servo Mode

Audio Mode

Power Mode

OP Alignment Mode

Key Check Mode

MZ-E909

4-4. MANUAL MODE

4-4-1. Outline of the function

The Manual mode is designed to perform adjustments and operational checks on the set’s operation according to each individual function. Usually, no adjustments are made in this mode. However, the Manual mode is used to clear the memory before performing automatic adjustments in the Overall Adjustment mode.

4-4-2. How to set the Manual mode

1. Set the TEST MODE and press + key to set the Manual mode.

Remote control LCD display

000 Manual

2. During each test, press and hold down > N key or .

key for a while to move the optical pickup on the sled outer or inner perimeter.

3. Each test item is assigned with a three-digit item number. The 100th place is a major item, 10th place is a middle item, and unit place is a minor item.

key : 100th place of mode number increase

key : 100th place of mode number decrease

keykey

key : 10th place of mode number increase

key : 10th place of mode number decrease

key

key : Unit place of mode number

> N

increase

key : Unit place of mode number decrease

> N

Change Major Item

Change Middle Item

key

Change Minor Item

4. During each test mode, the display is changed from one to another each time DISPLAY key is pressed.

• Address & Adjusted Value Display LCD display

011 C68S01

mode number

address

• Jitter Value & Adjusted Value Display LCD display

adjusted value

011 OFFJ01

mode number

jitter value

• Block Error Value & Adjusted Value Display LCD display

adjusted value

011 063B01

block error value

mode number

• ADIP Error Value & Adjusted Value Display LCD display

adjusted value

011 059A01

ADIP error value

mode number

• Item Title Display LCD display

adjusted value

011 LrefPw 0 1

item title

mode number

adjusted value

Change Adjustment Value

Write Adjustment Value

key : When adjusted value is changed : Adjusted value is written. When adjusted value is not changed : That item is adjusted automatically.

key : Up key : Down

Note: In the Power mode, the item title display is only displayed.

5. To terminate the Manual mode and return to the TEST MODE, press x key.

4-5. OVERALL ADJUSTMENT MODE

4-5-1. Outline of the function

This mode is designed to adjust the servo system automatically by going through all the adjustment items. Usually, this mode is used to perform automatic adjustments when servicing the set.

For further information, refer to section 5. ELECTRICAL ADJUSTMENTS. (See page 12)

4-6. SELF-DIAGNOSTIC DISPLAY MODE

4-6-1. Outline of the function

The Self-diagnostic system is used in this set. If an error occurs during playback, this system detects the fault through the microprocessor’s mechanism and power control blocks and stores the cause in EEPROM in a history format. This history, which can be viewed in the TEST MODE, provides the means of locating the fault in troubleshooting.

MZ-E909

4-6-2. Self-diagnostic mode

1. Set the TEST MODE.

2. With all the LCD display segments blinking on the set, press

DISPLAY key and >B key, the Self-diagnostic mode is entered.

001 1 Adrs

History code

Error display code

3. Hereinafter, each time > N key is pressed, the reference

information display changes as follows:

0XX 1 # # # #

0XX N # # # #

0XX N1 # # # #

Simplified contents

• Contents of the history codes

History code number

1 The first error that occurred. N The last error that occurred. N-1 The first error from the last one. N-2 The second error from the last one.

Total recording time ( – – – – is displayed for MZ-E909)

Contents

0XX N2 # # # #

0XX R

• Press . key to go back to the previous display.

• Description of the error display codes

Contents of fault Display code Meaning of code

No error 00 No error – – – – No error

Servo system error

TOC error

Power system error 22 LOWBATT LBat Instantaneous interruption detected.

Offset error

– – – –

Simplified

contents

01 Access target address illegally specified Adrs An attempt to access an abnormal address.

02 HIGH TEMP Temp HIGH TEMP

03 FOCUS ERROR Fcus Focus off-center.

04 SPINDLE ERROR Spdl Abnormal rotation of disc

11 TOC ERROR TOC

12 READ DATA ERROR Data

31 OFFSET ERROR Ofst Offset error 32 FE_ABCD_OFFSET_ERR ABCD FE ABCD Offset error 33 TE_ABCD_OFFSET_ERR TE TE ABCD Offset error 34 X1_TE_OFFSET_ERR X1TE X1 TE ABCD Offset error

Description

4-6-3. Clearing the error display code

After servicing, reset the error display code.

1. Set the TEST MODE.

2. Press the DISPLAY key on the remote control activates the selfdiagnosis display mode.

3. To reset the error display code press X key on the remote control when the code is displayed.(except for R - - - - display) (All the data on the 1st, N, N-1 and N-2 will be reset)

4. Press X key on the remote control again.

MZ-E909

4-7. SOUND SKIP CHECK RESULT DISPLAY MODE

This set can display and check the error count occurring during play.

• Setting method of Sound Skip Check Result Display Mode

1. Setting the test mode.

2. Press the > N key activates the sound skip check result

display mode where the LCD displays as shown below. LCD display

000 P**P##

Total of play system error count

Total of record system error count

3. When > N key is pressed, the total of error count is displayed on the LCD, and each time the > N key is pressed, the error count descents one by one as shown below. Also, when

. key is pressed, the error count ascends by one.

000 P**R00

000 EIB **

000 Stat**

4-8. KEY CHECK MODE

4-8-1. Outline of the function

This mode is used to check to make sure that each of the keys (including the slide switch) on the set operates normally.

4-8-2. Setting the Key Check mode

1. Set the TEST MODE. Press and hold down DISPLAY key (for more than 3 sec) to set the Key Check mode.

LCD display

000 0F

2. When each key on the set and on remote control is pressed, its name is displayed on the LCD. (The operated position is displayed for 4 sec after the slide switch is operated. If any other key is pressed during this display, the LCD switches to its name display)

Example: When > N key on the set is pressed:

LCD display

000 FF 0F

Example: When > N key on the remote control is pressed:

LCD display

000 rPLAY XX

000 Adrs**

000 BEmp**

000 ######

P**R00 : Total of play system error and record system error count ** : Sound skip check items counter (hexadecimal) ##### : 6-digit address (hexadecimal) where a sound skipped

Error code

Cause of error Description of error

Playback EIB Sound error correction error

Stat Decorder status error Adrs Cannot access the address BEmp Buffer becomes empty

4. Quit the sound skip check result display mode, and press the x

key to return to the test mode. (display check mode)

XX: AD value of the remote control key (hexadecimal 00 to FF)

3. When all the keys on the set and on the remote control are considered as OK, the following displays are shown for 2 sec. (The key pressed to enter the Key Check mode has been checked even if it is not pressed in this mode)

Example: When the keys on the set are considered as OK:

LCD display

888 SET OK OF

Example: When the keys on the remote control are considered

as OK:

LCD display

888 RMC OK OX

4. When all the key have been checked or when the top panel is opened during this checking, the system terminates the Key Check mode and return to the TEST MODE.

MZ-E909

SECTION 5

ELECTRICAL ADJUSTMENTS

5-1. GENERAL

In this set, CD and MO discs can be automatically adjusted by setting the Overall Adjustment mode within the TEST MODE, Before performing these automatic adjustments, it is necessary to clear the memory and adjust the power in the Manual mode.

5-2. NOTES FOR ADJUSTMENT

5-2-1. Jigs

• CD disc TDYS-1 (part code: 4-963-646-01)

• MO disc PTDM-1 (part code: J-2501-054-A) or commercially available MO disc (recorded)

• Digital voltmeter

5-2-2. Adjustment sequence

The adjustments should be always performed in the following sequence:

1 Reset NV (Clear the memory)

Manual mode

2 Manual power adjustments

3 Electrical offset adjustments

(Do not enter the disc)

4 Overall CD adjustments

5 Overall MO adjustments

Overall adjustment mode

5-4. MANUAL POWER ADJUSTMENTS

5-4-1. Adjustment sequence

The adjustments should be always performed in the following sequence:

1 Vc PWM Duty (L) adjustment (item No.:762)

2 Vl PWM Duty adjustment (item No.:764)

3 Vd PWM Duty adjustment (item No.:765)

5-4-2. Vc PWM Duty (L) adjustment method

1. Confirm that the power voltage is at 1.5 V DC.

2. Set the TEST MODE.

3. Set the overall adjustment mode and press PLAY MODE key, item No. will change to 762.

LCD display

762 VclPWM XX

4. Connect a digital voltmeter to TP901 (VC) on the main board and adjust + key (voltage up) and – key (voltage down) on the remote control.

Adjustment value:2.35V Standard value:2.34 to 2.355V

6 RESUME clear

7 Rewrite the NV value

5-2-3. Power

The power is supplied with 1.5 V DC from the battery case.

5-3. RESET NV

5-3-1. How to reset NV

1. Set the TEST MODE.

2. Set the Manual mode and set the item No. 021, Reset NV. LCD display

021 Res NV CC

3. Press X key on the remote control.

LCD display

021 Res OK?

4. Press X key on the remote control again.

LCD display

MAIN BOARD (SIDE A)

R909

C921

C908

R903

C905

5. Press X key to write the adjustment value.

C909

29 30

digital voltmeter

C910

R910

IC901

R951

TP901 (VC)

L905

15202528

R965

R964

TP901

(VC)

C907

D903

021 Res ***

After reset is completed.

021 Reset!

5. Press x key to terminate the Manual mode and return to the TEST MODE.

+ 28 hidden pages

Sony MZE-909 Service manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SPECIFICATIONS

SERVICING NOTE

GENERAL

DISASSEMBLY

3-2. MECHANISM DECK

3-3. BRACKET (R) ASSY

3-5. OPTICAL PICK-UP ASSY

TEST MODE

ELECTRICAL ADJUSTMENTS