Sony Net MD Walkman MZ-N1 User Manual

MZ-N1

SERVICE MANUAL

Ver 1.4 2002. 10

US and foreign patents licensed from Dolby Laboratories.

• OpenMG, “MagicGate”, “MagicGate Memory Stick”, “Memory Stick”,

VAIO,MusicClip and their logos are trademarks of Sony Corporation.

• “WALKMAN” is a trademark 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.

• All other trademarks are trademarks of their respective owners. ™ and

® marks are omitted in this manual.

US Model

Canadian Model

AEP Model

UK Model

E Model

Australian Model

Chinese Model

Tourist Model

Model Name Using Similar Mechanism NEW Mechanism Type MT-MZN1-171 Optical Pick-up Name LCX-5R

SPECIFICATIONS

Audio playing system

MiniDis c digital audio system

Laser diode properties

Material : GaAlAs Wa velength: λ = 790 nm Emis

sion duration: continuous

Laser output : less tha n 44. 6 µW (This output is the value measured at a distance of 200 m m fro m the lens surface on the op tica l pick-up blo ck with 7 mm ape rtur e .)

Recording and playback time (when using MDW-80)

Maxim um 160 min. in monaural Maxim um 320 min. in stereo

Revolutions

382 rp m to 2,700 rpm (CLV)

Error correction

ACIRC (Advanced Cross Interleave Reed Solomon Code)

Sampling frequency

44.1 kHz

Sampling rate converter

Input: 32 kHz/44. 1 k Hz/48 kHz

Coding

ATRAC (Adaptive TRa nsfor m Acoustic Coding) AT RAC 3 — LP 2/LP4

9-873-443-05 Sony Corporation

2002J0500-1 Personal Audio Company

C 2002.10 Published by Sony Engineering Corporation

– Continued on next page –

PORTABLE MINIDISC RECORDER

MZ-N1

Ver 1.1

Modulation system

EFM (Eight to Fourteen Modula tion)

Frequency response

20 to 20, 000 Hz ± 3 dB

Wow and Flutter

Below measurable limit

Inputs

MIC: stereo mini-jac k (minimum inpu t leve l 0.25 m V) Line in:

stereo mini-jack for anolog input (minimum inpu t level optica l (d igital) mini-jac k for opt ical (digital ) in put

49 mV )

Outputs

i/LINE OUT2): stereo mini-jack (d ed icated remote control jack)/194 m V (1 0 kohm)

Maximum output (DC)

Headphones: 5 mW + 5 mW (16 ohm)

Power requirement

Sony AC Power Adaptor connected at the DC IN 3V jack (country model in parentheses):

120 V AC, 60 Hz (USA, Canada and Taiwan) 220 V AC, 50/60 Hz (Continental Europe) 240 V AC, 50 Hz (Australia) 220 V AC, 50 Hz (China) 230 - 240 V AC, 50 Hz (U.K. and Hong Kong) 110/220 V AC, 60 Hz (Korea) 100 - 240 V AC, 50/60 Hz (Other countries)

The recorder:

Nickel metal hydride rechargeable battery NH-14WM(A) 1.2V 1350 mAh (MIN) NiMH LR6 (SG) alkaline battery

USB cradle:

AC power adaptor DC 3V

Dimensions

Approx. 77.7 × 71.4 ×16.4 mm (w/h/d)

× 2

/8 × 21/32 in.)

Mass

Approx. 87 g (3.0 oz ) the recorder only

The LINE IN (OPT) jack is us ed to conn ect

e ither a digital (o ptical) cable o r a line (analog) cable.

The i/LINE OUT jack connects either

headphones/earphones

or a line cable.

Supplied accessories

AC power adaptor (1) Headphones/earphones with a remote control (1) Optical cable (1) USB cradle (1) USB cable (1) Nickel metal hydride rechargeable battery NH-14WM(A) (1) CD-ROM (1)* Dry battery case (1) Rechargeable battery carrying case (1) Recordable MD (USA and Canada models only) (1) Carrying pouch/carrying case with a belt clip (except USA model) (1) AC plug adaptor (Sony world model only) (1)

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

Battery life

When recording

(Unit: approxi.hours)(JEITA3))

Batteries SP

Nickel metal

Stereo

LP2 Stereo

LP4 Stereo

12 17 21 hydride rechargeable

battery LR6 (S G)

Sony alkaline dry battery

Nickel metal

12 19 23

30 43 52 hydride rechargeable

battery + On e LR6

(SG)

The battery life may be shorter due to operating conditions and the temperature of the location.

When yo u record , use a fully charged rechargeable battery. differ according to the alka line batteries.

Measured in accordance with the JE ITA (J a p a n Ele ctronic s a nd Inform a tion Technology Industries Association) standard.

When u s ing a 100% fully cha rge d

metal hydride

14WM(A)).

Whe n using a S o ny LR6 (SG) “STAMINA” a lkaline dr y battery (produced in Japan).

Recording time may

rech

le battery (NH-

geab

nickel

When playing

: approxi.hours)(JEITA1))

(Unit

Batteries SP

Nickel metal

Stereo

LP2 Stereo

LP4 Stereo

30 38 42 hydride rechargeable

battery LR6 (SG)

Sony alkaline dry battery

Nickel metal

44 52 62

79 95 110 hydride rechargeable

battery + On e LR6

(SG)

Measured in accordance woth the JEITA (Japan Electronics and Information Technology Industries Association) standard.

When us ing a 100% fully charged

metal hydride

14WM(A)).

When using a Sony LR6 (SG) “STAMINA” a lkaline dr y battery (pro

rechargeable battery (NH-

duced in Japa n)

nickel

De sign and specitications are subject to change without notice.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIA GRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMA TIQ UES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

MZ-N1

CAUTION

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

On power sources

• Use house curre nt, nikel metal hydride

rechargeable battery, LR6 (SG) battery, or car battery.

•

For use in your house: For the supplied battery charging s t and, use the AC power adaptor supplied with this recorder. Do not use any other AC power adaptor s ince it may cause the recorder to malfunction.

Polarity of the plug

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam-

aged 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.

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the leadfree 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.

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

2. GENERAL ................................................................... 5

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 6

3-2. Bottom Panel Assy .......................................................... 7

3-3. Upper Panel Section........................................................ 7

3-4. LCD Module, Upper Panel Assy .................................... 8

3-5. MAIN Board Section ...................................................... 8

3-6. Battery Case Assy, MAIN Board.................................... 9

3-7. MD Mechanism Deck (MT-MZN1-171),

Chassis Assy.................................................................... 9

3-8. OP Service Assy (LCX-5R)............................................ 10

3-9. Holder Assy ..................................................................... 11

3-10. DC Motor (Sled) (M602)................................................ 11

3-11. DC SSM18B Motor (Spindle) (M601),

DC Motor (Over Write Head UP/DOWN) (M603) ....... 12

4. TEST MODE.............................................................. 13

5. ELECTRICAL ADJUSTMENTS......................... 19

6. DIAGRAMS

6-1. Block Diagram – SERVO/USB Section – ...................... 30

6-2. Block Diagram – AUDIO Section – ............................... 31

6-3. Block Diagram – DISPLAY/KEY CONTROL/

POWER SUPPLY Section – ........................................... 32

6-4. Note for Printed Wiring Board and

Schematic Diagrams ....................................................... 33

6-5. Printed Wiring Board

– MAIN Board (Component Side) – ............................. 34

6-6. Printed Wiring Board

– MAIN Board (Conductor Side) – ............................... 35

6-7. Schematic Diagram – MAIN Board (1/4) – .................. 36

6-8. Schematic Diagram – MAIN Board (2/4) – .................. 37

6-9. Schematic Diagram – MAIN Board (3/4) – .................. 38

6-10. Schematic Diagram – MAIN Board (4/4) – .................. 39

6-11. IC Pin Function Description ........................................... 46

7. EXPLODED VIEWS

7-1. Upper Panel Section........................................................ 53

7-2. Bottom Panel Section...................................................... 54

7-3. Chassis Section ............................................................... 55

7-4. Main Board Section ........................................................ 56

7-5. MD Mechanism Deck Section (MT-MZN1-171) .......... 57

8. ELECTRICAL PARTS LIST ............................... 58

MZ-N1

Notes on using OpenMG Jukebox with Windows 2000/Windows XP

If your computer is Windows 2000 Professional, Windows XP Home Edition, or Windows XP Professional, please be aware of the following before instaling OpenMG Jukebox.

With Windows 2000 Professional, you must log on as “Administrators” (or with the user name “Administrator”) to install OpenMG Jukebox.

With Windows XP Home Edition or Windows XP Professional, you must log on with user name “Computer Administrator” to install OpenMG Jubebox. To check whether a user name has the attribute of “Computer Administrator” or not, go to [Control Panel] - [User Account].

Notes on using OpenMG Jukebox with Windows XP/ Windows Me

If Windows XP/Windows Me is installed in your computer, and you perform the “System Restore” function of the Windows “System Tools,” the songs managed by OpenMG Jukebox may become corrupted and rendered unplayable. Therefore, before executing “System Restore,” back up the songs using “OpenMG Jukebox Backup Tool” first. Then, after the “System Restore” function is finished, restore the songs using “OpenMG Jukebox Backup Tool” to ensure the integrity and reliability of song playback. For more information about backup, refer to the online Help for OpenMG Jukebox.

Note

When songs become unplayable by executing “System Restore,” an error dialog box may be displayed. In this case, follow the displayed messages.

Ver 1.1

SECTION 1

SERVICING NOTES

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.

NOTES ON LASER DIODE EMISSION CHECK

Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-5R)

The laser diode in the optical pick-up block may suffer electrostatic break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform measures against electrostatic break-down sufficiently before the operation. The flexible board is easily damaged and should be handled with care.

laser-tap

OPTICAL PICK-UP FLEXIBLE BOARD

• In performing the repair with the power supplied to the set, removing the MAIN board causes the set to be disabled. In such a case, fix a conve x part of the open/close detect switch (S804 on MAIN board) with a tape in advance. Handle the FLEXIBLE board (over write head) with care, as it has been soldered directly to the MAIN board. In repairing the component side of MAIN board, connect the FLEXIBLE board (over write head) and the MAIN board with the lead wires in advance. (See page 8)

• The shipment data will be cleared when the NV is reset. Therefore, change the NV adjusted values following the Change of NV Adjusted Values immediately after the NV was reset. (See page 19)

• This set requires the patch data in the nonvolatile memory (IC802) to be rewritten using the application, when the MAIN board or nonvolatile memory (IC802) was replaced. (See page

27)

System requirements

• IBM PC/AT or Compatible (The software does not run on Macintosh.) CPU: MMX™ Pentium recommended.)

Hard disk drive space: 60 MB or more (The amount of necessary space depends on

the version of the Windows OS or the size of your audio files.)

RAM: 64 MB or higher (128 MB or higher is recommended for Windows

Edition/Windows CD-ROM drive (capable of digital playback by WDM) Sound Board USB port (supports USB 2.0 Full Speed (previously USB 1.1))

• Operating System: Windows Professional/Windows Professional (manufacturer installed)

The NTFS format of Windows

XP Professional (manufacturer-installed) is supported only when used

Windows with the standard (factory) settings. This software is not supported by the following environments.

– Windows – An environment that is an upgrade of the original manufacturer-installed

operating system, as in the following examples: Windows

Windows Windows

– Multi-boot environment with Windows

98 (or Windows® 98 Second Edition/Windows®Me)

• Display: High (16bit) Color or more (800 × 480 dot or more)

• Internet access: for Web registration and EMD services

• Windows Media Player (version 7.0 or higher) installed for playing WMA files.

Notes

• Trouble-free operation is not assured within a multiple-monitor environment.

• We do not assure trouble-free operation for all computers satisfying the system requirements.

• Trouble-free operation is not guaranteed following the self-conducted upgrade of home-built

PCs or operating systems.

• We do not assure trouble-free operation of the system suspend, sleep, or hibernation function on

all computers.

• For details, refer to “Net MD Help” of the online help.

Note

The optical digital output connector (on computers provided with one) may be disabled during playback for the protection of copyrights.

233 MHz or higher (Pentium® II 400 MHz or higher is

XP Professional.)

98/Windows® 98 Second Edition/Windows® 2000

Me/Windows® XP Home Edition/Windows® XP

2000 Professional, Windows® XP Home Edition, or

95, Windows® NT, or other versions of Windows® NT (such as Server)

3.1/Windows® 95 t Windows® 98 (or Windows® 98 Second Edition/

Me)

Me/Windows® 2000 Professional t Windows® XP

for software upgrades and CDDB2 use. (US and Canadian models)

2000 (or Windows® XP) and Windows

XP Home

FLEXIBLE board (Over write head)

upper panel assy

Tape

S804

MAIN boar

Looking at controls

SECTION 2

GENERAL

MZ-N1

This section is extracted from instruction manual.

The recorder

1 2 3 4 5

A END SEARCH button B Display window C VOLUME +/– buttons

The VOLUME + button has a tactile dot.

D Battery compartment E T MARK button F HOLD switch (at the rear) G Terminals for attaching dry battery

case

H DC IN 3V jack I USB cradle connecting jack J Control bar

• Moves the cursor in the display.

• Othe r operations Operation Function

Press N Press . rewind Press> fast forward Flip towards X pause Flip towards x stop

The N button has a tactile dot.

K GROUP/CANCEL button L OPEN switch M Charge lamp N Jog dial (MENU/ENTER)

Turn to select

O LINE IN (OPT) jack

play/enter

Push to enter

P MIC (PLUG IN POWER) jack

There is a tactile dot beside the MIC (PLUG IN POWER) jack.

Q REC (record) switch R i (headphones/earphones)/LINE

OUT jack

The display window of the recorder

1342 56

A Character information display

Displays the disc and track names, date, error messages, track numbers, etc.

B G roup indication C Disc indication

Shows that the disc is rotating for recording, playing or editing an MD.

D REC indication

Lights up while recording. When flashing, the recorde r i s i n r ecord standby mode.

E SYNC (synchro-recording) indication

F Play mode indication

Shows the play mode (shuffle play, program play, repeat play, etc.) of the MD.

G Level meter H LP2 (LP2 stereo), LP4 (LP4 stereo),

MONO (monaural) indication

I S ound indication

Lights up when Digital Sound Preset is on.

J Battery indication

Shows approximate battery co ndition.

K Melody timer indication

qa9

q;87

The headphones/earphones with a remote control

A B C DE

A DISPLAY button B PLAY MODE button C RPT/ E N T (repeat/enter) butt on D SOUND button E Clip F X (pause) button G Control (./N>)

N> : play, AMS, FF . : REW

Turn or turn and hold to play, fast forward or rewind .

You can quickly fast forward or rewind without listening to the playback sound.

H Control (VOLUME +/–)

Pull and turn to adjust the volume.

I Display window J HOLD switch K x (stop) button

May be used as the “Enter” button, depending on the function.

The display window of the remote control

BCDE

–

A Track number disp l ay B Chara cter information display C Disc indication D Melody time r i ndi c ation

E Play mode indication F Battery level indication G REC indication H SOUND indication

MZ-N1

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SET

3-2. BOTTOM PANEL ASSY

(Page 7)

SECTION 3

DISASSEMBLY

3-3. UPPER PANEL SECTION

(Page 7)

3-5. MAIN BOARD SECTION

(Page 8)

3-7. MD MECHANISM DECK (MT-MZN1-171),

CHASSIS ASSY (Page 9)

3-8. OP SERVICE ASSY (LCX-5R)

(Page 10)

3-9. HOLDER ASSY

(Page 11)

3-10. DC MOTOR (SLED) (M602)

3-4. LCD MODULE, UPPER PANEL ASSY

(Page 8)

3-6. BATTERY CASE ASSY, MAIN BOARD

(Page 9)

3-11. DC SSM18B MOTOR

(Page 11)

(SPINDLE) (M601), DC MOTOR (OVER WRITE HEAD UP/DOWN) (M603) (Page 12)

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

3-2. BOTTOM PANEL ASSY

Note : On installation, adjust the position of

both switch (S801) and knob (hold).

S801

Open the battery case lid.

Remove the battery case lid.

claw

MZ-N1

knob (hold)

two screws (M1.4)

3-3. UPPER PANEL SECTION

two screws (M1.4)

Close the battery terminal (plus).

Remove the bottom panel assy in the direction of arrow

three screws (M1.4)

flexible board (CN801)

upper panel section

Slide the lever (open) in the direction of the arrow, and open the upper panel section.

two screws (M1.4)

two convex holes for screws

MZ-N1

Ver 1.3

3-4. LCD MODULE, UPPER PANEL ASSY

three screws (1.7)

Remove the LCD module in the direction of the arrow.

upper panel section

3-5. MAIN BOARD SECTION

flexible board (optical pick-up) (CN501)

holder (terminal)

main board section

four screws (M1.4)

screw (M1.4)

flexible board (motor) (CN502)

Remove two solders of the flexible board (over write head).

3-6. BATTERY CASE ASSY, MAIN BOARD

battery case assy

main boar

MZ-N1

Remove the solder of terminal (plus).

Remove the solder of terminal (minus).

3-7. MD MECHANISM DECK (MT-MZN1-171), CHASSIS ASSY

boss

MD mechanism deck (MT-MZN1-171)

screw (M1.4)

boss

screw (M1.4)

spring (POP)

chassis assy

MZ-N1

3-8. OP SERVICE ASSY (LCX-5R)

washer (0.8-2.5)

screw (M1.4)

rack spring

gear (SA)

screw (M1.4)

thrust detent spring

Pull off lead screw.

OP service assy (LCX-5R)

over write head section

Opening the over write head toward the direction (LCX-5R) toward the direction

Note: Do not open the entire assy forcibly,

, remove the OP service assy

when opening the over write head.

3-9. HOLDER ASSY

Remove the holder assy in the direction of arrow

Open the holder assy.

MZ-N1

Push the convex portion toward the direction toward the direction

Remove the concave portion in the direction of arrow

and open the holder assy

to erect uprightly.

3-10. DC MOTOR (SLED) (M602)

washer (0.8-2.5)

two screws (M1.4)

DC motor (sled) (M602)

convex portion

gear (SA)

Remove six solders of the motor flexible board.

MZ-N1

3-11. DC SSM18B MOTOR (SPINDLE) (M601), DC MOTOR (OVER WRITE HEAD UP/DOWN) (M603)

Remove six solders of the motor flexible board.

three screws (M1.4)

DC SSM18B motor (spindle) (M601)

DC motor (over write head up/down) (M603)

two screws (M1.4)

gear chassis assy

screw (M1.2

1.5)

Note : Press-fit the gear (HA) up to the

position of the DC motor (over write head up/down) (M603) as shown below.

gear (HA)

2.65mm

DC motor (over write head up/down) (M603)

gear (HA) gear (HB) washer (0.8-2.5)

gear chassis assy

washer (0.8-2.5)

gear (HC)

SECTION 4

TEST MODE

MZ-N1

Outline

• This set provides the Overall adjustment mode that allows CD and MO discs to be automatically adjusted when in the test mode. In this overall adjustment mode, the disc is discriminate between CD and MO, and each adjustment is automatically executed in order. If a fault is found , the system displays its location. Also, the manual mode allows each individual adjustment to be automatically adjusted.

• Operation in the test mode is performed with the set. A key having no particular description in the text, indicates a set key.

• For the LCD display, the LCD on the remote commander is shown, but the contents of LCD display on the set are same.

Setting Method of Test Mode

There are three different methods to set the test mode: 1 Short SL801 (TEST) on the MAIN board with a solder bridge

(connect pin <zvn of IC801 to the ground) and turn on the [HOLD] switch. Then, turn on the power.

– MAIN Board (Conductor Side) –

Operation in Setting the Test Mode

• When the test mode becomes active, first the display check mode is selected.

• Other mode can be selected from the display check mode.

• When the test mode is set, the LCD repeats the following display.

Remote commander LCD display

All lit

All off

Microcomputer version display

• When the X key is pressed and hold down, the display at that time is held so that display can be checked.

888

001 V1.000

SL801

(TEST)

SL801 (TEST)

SL506

C510

C509

R842

FB802

C820

R841

S801

[HOLD]

OFF

C818

C821

C813

195 199 178 174 170 166 164 1581

203 180 176 172 168 162 160 1

197193 191189 185187

switch

ON (HOLD)

C850

C810

175 171 169 167 163 159 1 173 179 177 201 165 161 1183182 207 181184186 215 188209190

Releasing the Test Mode

For test mode set with the method 1: Turn off the power and open the solder bridge on SL801 (TEST) on the MAIN board.

Note: Remove the solders completely. Remaining could be shorted with

the chassis, etc.

For test mode set with the method 2 or 3: Turn off the power.

2 In the normal mode, turn on the [HOLD] switch. While press-

ing the [VOLUME --] key press the following order:

> t > t . t . t > t

. t > t . t X t X

3 In the normal mode, turn on the [HOLD] switch. While

pressing the x/CHG key, press the keys on the remote commander with the following order:

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

. t N > t . t X t X

Note: If electrical adjustment (CD and MO overall adjustment) has not

been finished completely , “NV Error” is displayed on LCDs of the set and the remote commander.

MZ-N1

x/CHG

key

x/CHG

key

[VOLUME +] key: 100th place of item

number increase.

[VOLUME --] key: 100th place of item

number decrease.

[Major item switching]

[VOLUME +]

key: 10th place of item

number increase.

[VOLUME --] key: 10th place of item

number decrease.

[VOLUME +] key: Increases the adjusted

value of the 1st digit

[VOLUME --] key: Decreases the adjusted

value of the 1st digit

[Medium item switching]

key

[Minor item switching]

[Adjusted value variation]

key: When adjusted value is

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

[Adjusted value write]

key: Unit place of item number

increase.

key:Unit place of item number

decrease.

[PLAY MODE] key of

the remote commander: Increase the adjusted value of the 2nd digit

[SOUND] key of the remote commander:

Decrease the adjusted value of the 2nd digit

Configuration of Test Mode

[Test Mode $Display Check Mode%]

Press the

Turn the jog dial (down), or press the

Press the

[VOLUME +]

[Manual Mode]

x/CHG

key

[VOLUME --]

[Overall Adjustment Mode]

x/CHG

key

[DISPLAY]

key on the remote commander

[Self-Diagnosis Result Display Mode]

x/CHG

key

[Servo Adjustment] [Audio Adjustment] [Power Supply Adjustment]

[OP Alignment Adjustment]

key

[Electrical Offset Adjustment]

Power Supply Adjustment Auto Item Feed

CD Overall Adjustment/ MO Overall Adjustment

Press the

[REC]

key

[Sound Skip Check Result Display Mode]

Press the

Press the on the remote commander for several seconds (about 3 seconds)

x/CHG

[T MARK]

key

key, or

[DISPLAY]

key

[Key Check Mode]

The key check quits, or open the upper panel

Manual Mode

Mode to adjust or check the operation of the set by function. Normally, the adjustment in this mode is not executed. However, the Manual mode is used to clear the memory, power supply adjustment, and laser power check before performing automatic adjustments in the Overall Adjustment mode.

• Transition method in manual mode

1. Set the test mode (see page 13).

2. Press the > or[VOLUME +] key activates the manual mode where the LCD display as shown below.

Remote commander LCD display

000

Manual

3. During each test, the optical pick-up moves outward or inward while the > or . key is pressed for several seconds respectively.

4. Each test item is assigned with a 3-digit item number; 100th place is a major item, 10th place is a medium item, and unit place is a minor item. The values adjusted in the test mode are written to the nonvolatile memory (for the items where adjustment was made).

MZ-N1

5. The display changes a shown below each time the jog dial (down) is turned or the [DISPLAY] key on the remote commander is pressed.

• Address & Adjusted Value Display

Remote commander LCD display

011

C68S01

item number

• Jitter Value & Adjusted Value Display

Remote commander LCD display

011

item number

• Block Error Value & Adjusted Value Display

Remote commander LCD display

011

item number

• ADIP Error Value & Adjusted Value Display

Remote commander LCD display

011

address

OFFJ01

jitter value

063B01

block error

value

059A01

adjusted value

Self-Diagnosis Result Display Mode

This set uses the self-diagnostic function system in which if an error occurred during the recording or playing, the mechanism control block and the power supply control block in the microcomputer detect it and record its cause as history in the nonvolatile memory. By checking this history in the test mode, you can analyze a fault and determine its location. Total recording time is recorded as a guideline of how long the optical pickup has been used, and by comparing it with the total recording time at the time when an error occurred in the selfdiagnosis result display mode, you can determine when the error occurred. Clear both self-diagnosis history data and total recording time, if the optical pickup was replaced.

• Self-diagnosis result display mode setting method

1. Set the test mode (see page 13).

2. In the display check mode, turn the jog dial (down) or press the

[DISPLAY] key on the remote commander activates the self-

diagnosis result display mode where the LCD display as shown below.

Remote commander LCD display

0XX

1 0000

history code

error display code

Total recording time when error occurred

ADIP error

item number

• Focus Drive Value & Adjusted Value Display

Remote commander LCD display

011

item number

• Item Title Display

Remote commander LCD display

011

item number

However in the power mode (item number 700’s), only the item is displayed.

6. Quit the manual mode, and press the the test mode (display check mode).

value

015F01

Focus drive

value

LrefPw 01

item title

adjusted value

x/CHG key to return to

Overall Adjustment Mode

Mode to adjust the servo automatically in all items. Normally, automatic adjustment is executed in this mode at the repair. For further information, refer to “SECTION 5 ELECTRICAL ADJUSTMENTS” (see page 19).

3. Then, each time the > key is pressed, LCD display descends by one as shown below. Also, the LCD display ascends by one when the

. key is pressed.

0XX 1 ****

0XX N ****

0XX N1**** 0XX N2**** 0XX R_****

: Error code

****

: Total recording time

If the jog dial (down) is turned or the [DISPLAY] key on remote commander is pressed with this display, the LCD switches to the simple display mode.

4. Quit the self-diagnosis result display mode, and press the x/

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

MZ-N1

• Description of error indication codes

Problem Indication code Meaning of code Simple display Description

No error 00 No error --- No error

Servo system error 02 High temperature Temp High temperature detected

03 Focus error Fcus Disordered focus or can not read an address 04 Spindle error Spdl Abnormal rotation of disc

TOC error

Power supply system error 22 Low battery LBat Momentary interruption detected

Offset system error

Disc error 35

11 TOC error TOC Faulty TOC contents 12 Data reading error Data Data could not be read at SYNC

31 Offset error Ofst Offset error

Illegal access target address was specified

Focus error ABCD offset error

Tracking error Offset error

X1 tracking error Offset error

MD DATA 2 disc error

Adrs Attempt to access an abnormal address

ABCD Focus error ABCD offset error

TE Tracking error Offset error

X1TE X1 tracking error Offset error

MD2 MD DATA 2 disc error

• Description of indication history

History code number Description

1 The first error N The last error N1 One error before the last. N2 Two errors before the last. R_ Total recording time

Reset the Error Display Code

After servicing, reset the error display code.

• Setting method of reset the error display code

1. Set the test mode (see page 13).

2. Turn the jog dial (down) or press the [DISPLAY] key on the remote commander activates the self-diagnosis result display mode.

3. To reset the error display code, press the X key (twice) when the code is displayed (except “R_****”). (All the data on the 1, N, N1, and N2 will be reset)

MZ-N1

Sound Skip Check Result Display Mode

This set can display the count of errors that occurred during the recording/playing for checking.

• Setting method of sound skip check result display mode

1. Set the test mode (see page 13).

2. Press the N key or [REC] key, and the playing or recording

sound skip result display mode becomes active respectively where the LCD displays the following.

Remote commander LCD display

000

P**R**

Total count of record

Total count of play system errors (hex.)

3. When the N key is pressed, total error count is displayed on

the LCD, and each time the > key is pressed, the display item moves down by one as sho wn below . Also, if the . key is pressed, the display item moves up by one, then if the [REC] key is pressed, the display in the record mode appears. When the [REC] key is pressed, total error count is displayed on the LCD, and each time the > key is pressed, the display item moves down by one as sho wn below . Also, if the . key is pressed, the display item moves up by one, then if the N key is pressed, the display in the play mode appears.

Playing sound skip result display

system errors (hex.)

Recording sound skip result display

Jog and Key Check Mode

This set can check if the set and remote commander function normally.

• Setting method of jog check mode

1. Set the test mode (see page 13).

2. Press the jog button to activate the jog check mode and display as below .

Remote commander LCD display

000

PUSH

3. Turn the jog dial downwards one click.

Remote commander LCD display

000

JOG+ 1

4. Turn the jog dial downwards three more clicks.

Remote commander LCD display

000

JOG+OK

5. Turn the jog dial upwards one click.

Remote commander LCD display

000

JOG- 1

000 P**R**

000 EIB **

000 Stat** 000 Adrs** 000 BEmp**

000 P**R**

000 BOvr**

000 Bful** 000 Rtry** 000 ######

000 ######

P**R**

: Total play/record errors (hex.)

: Counter of sound skip check each item (hex.)

######

: 6-digit address where sound was skipped last (hex.)

• Cause of sound skip error

Cause of error Description of error

EIB Sound error correction error

Play

Record

4. To quit the sound skip check result display mode and to return to the test mode (display check mode), press the x/CHG key.

Stat Decoder status error Adrs Address access error BEmp Buffer is empty

BOvr

Bful Rtry Retry times over

Buffer is full, and sounds were dumped

Buffer capacity becomes less, and forcible writing occurred

6. Turn the jog dial upwards three more clicks.

Remote commander LCD display

000

JOG OK

7. When the check mode.

Note: To enter the key check mode, it is not necessary to enter via the jog

dial check mode. (Refer to next item)

• Setting method of key check mode

1. Set the test mode (see page 13).

2. Press the [T MARK] key or [DISPLAY] key on the remote com- mander for several seconds (about 3 seconds) activates the key check mode. (At the last two digits, AD value of remote commander key line is displayed in hexadecimal)

Remote commander LCD display

000

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

x/CHG key is pressed, it changes over to the key

: AD value of the remote commander key

(hexadecimal 00 to FF)

MZ-N1

Example1: When the > key on the set is pressed:

Remote commander LCD display

000

FF **

: AD value of the remote commander key

(hexadecimal 00 to FF)

Example2: When the N > key on the remote commander

is pressed:

Remote commander LCD display

000

rPLAY **

: AD value of the remote commander key

(hexadecimal 00 to FF)

4. When all the keys on the set and on the remote commander are considered as OK, the following displays are shown for 4 seconds.

Example1: When the keys on the set are considered as OK:

Remote commander LCD display

888

SET OK **

: AD value of the remote commander key

(hexadecimal 00 to FF)

Example2: When the keys on the remote commander are con-

sidered as OK:

Remote commander LCD display

888

RMC OK **

: AD value of the remote commander key

(hexadecimal 00 to FF)

5. When all keys were checked or if the upper panel is opened,

the key check mode quits and the test mode (display check mode) comes back.

SECTION 5

Remote commander LCD display

ResOK?

021

ELECTRICAL ADJUSTMENTS

MZ-N1

Outline

• In this set, automatic adjustment of CD and MO can be performed by entering the test mode. However, before starting automatic adjustment, the memory clear, power supply adjustment, and laser power check must be performed in the manual mode.

• A key having no particular description in the text, indicates a set key.

• For the LCD display, the LCD on the remote commander is shown, but the contents of LCD display on the set are same.

Precautions for Adjustment

1. Adjustment must be done in the test mode only.

After adjusting, release the test mode.

2. Use the following tools and measuring instruments.

• Test CD disc TDYS-1 (Part No. : 4-963-646-01)

• SONY MO disc available on the market

• Digital voltmeter

• Laser power meter LPM-8001 (Part No. : J-2501-046-A)

• Thermometer (using the Temperature Correction)

3. Unless specified otherwise, supply DC 3V from the DC IN 3V jack (J601).

4. Switch position

HOLD switch ............................................... ON

NV Reset

Caution: The shipment data will be cleared when the NV is reset.

Therefore, change the NV adjusted values following the Change of NV Adjusted Values immediately after the NV was reset. Change the NV adjustment values according to the microcomputer version.

• Setting method of NV reset

1. Select the manual mode of the test mode, and set item number 021 NV Reset (see page 14).

Remote commander LCD display

021

ResNV CC

2. Press the X key.

3. Press the X key once more.

Remote commander LCD display

021

Res***

Adjustment Sequence

1. NV Reset (EEPROM clear)

2. Power Supply Manual Adjustment

3. Temperature Correction (item number: 015)

4. Laser Power Check

5. Electrical Offset Adjustment Caution: This adjustment must be made with

no disc loaded.

r Overall Mode

6. CD Overall Adjustment

7. MO Overall Adjustment

8. RESUME Clear

Note: If the version of the micr ocomputer is 1.000 or later, “3. T empera-

ture Correction” and “2. Power Supply Manual Adjustment” can be performed continuously in reverse order with pressing the [PLAY

key on the remote commander in the overall adjustment

MODE]

mode.

 

Manual Mode

 



Manual Mode

 

 

Manual Mode

 

        



Manual Mode

 

NV reset (after several seconds)

021

Reset!

4. Press the the test mode (display check mode).

• Change of NV adjusted values (version 1.000)

Caution: Change the NV adjustment values according to the mi-

In this set, some adjusted values were set in the manual mode at the shipment, but these will be cleared when the NV is reset. Therefore, modify the NV adjusted values through the following procedure immediately after the NV was reset.

1. Item numbers in which the NV adjusted values are to be modified – Change ABCD gain [Hpit] initial value (item number 336)

– Change DFTC threshold value (item number 151) – Turn off sound generation speed-up (item numbers 861 to

– Change CLV dri ve v oltage limiter (item numbers 865, 866) – Change x2 CLV speed gain, +6dB compared to con ventional

– Change x2 CLV phase gain, +3dB compared to con ventional

– Change x2/x1 switching temperature threshold value

x/CHG key to quit the manual mode, and return

crocomputer version.

Caution:The ABCD gain [Hpit] initial value must be

changed before the overall adjustment.

864)

(item numbers 867, 868)

(item numbers 871, 872) (+10°C t +5°C) (item numbers 873, 874)

MZ-N1

2. NV adjusted values modifying procedure

1) Select manual mode of the test mode, and set item number 336 (see page 14).

Remote commander LCD display

336

AbcdGn **

: Adjusted value

2) Adjust with the [VOLUME +] k ey (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes 8.

3) Press the X key to write the adjusted value.

4) Select manual mode of the test mode, and set item number 149 (see page 14).

5) Press the > key to set item number 151.

Remote commander LCD display

151

Dfct 1 **

: Adjusted value

6) Adjust with the [VOLUME +] k ey (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes 07.

7) Press the X key to write the adjusted value.

8) Select manual mode of the test mode, and set item number 861 (see page 14).

Remote commander LCD display

861

V1 num **

: Adjusted value

9) Adjust with the [VOLUME +] k ey (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes 79.

10) Press the X key to write the adjusted value.

11) Select manual mode of the test mode, and set item number 862 (see page 14).

Remote commander LCD display

862

V1 dat **

: Adjusted value

12) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes 00.

13) Press the X key to write the adjusted value.

14) Select manual mode of the test mode, and set item number 863 (see page 14).

Remote commander LCD display

863

V2 num **

: Adjusted value

15) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes EA.

16) Press the X key to write the adjusted value.

17) Select manual mode of the test mode, and set item number 864 (see page 14).

Remote commander LCD display

864

V3 dat **

: Adjusted value

18) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes 01.

19) Press the

20) Select manual mode of the test mode, and set item number 865 (see page 14).

Remote commander LCD display

865

21) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

X key to write the adjusted value.

V3 num **

: Adjusted value

UME --] key (adjusted value down) so that the adjusted value

becomes 2C.

22) Press the X key to write the adjusted value.

23) Select manual mode of the test mode, and set item number 866 (see page 14).

Remote commander LCD display

866

V3 dat **

: Adjusted value

24) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes B9.

25) Press the X key key to write the adjusted value.

26) Select manual mode of the test mode, and set item number 867 (see page 14).

Remote commander LCD display

867

V4 num **

: Adjusted value

27) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes C9.

28) Press the

29) Select manual mode of the test mode, and set item number 868 (see page 14).

Remote commander LCD display

868

30) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

X key to write the adjusted value.

V4 dat **

: Adjusted value

UME --] key (adjusted value down) so that the adjusted value

becomes 80.

31) Press the X key to write the adjusted value.

32) Select manual mode of the test mode, and set item number 871 (see page 14).

Remote commander LCD display

871

V5 num **

: Adjusted value

33) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes CA.

34) Press the X key to write the adjusted value.

35) Select manual mode of the test mode, and set item number 872 (see page 14).

Remote commander LCD display

872

V5 dat **

: Adjusted value

36) Adjust with the [VOLUME +] key (adjusted value up) or [VOL-

UME --] key (adjusted value down) so that the adjusted value

becomes 2D.

37) Press the X key to write the adjusted value.

+ 44 hidden pages

Sony Net MD Walkman MZ-N1 User Manual

TABLE OF CONTENTS

SERVICING NOTES

GENERAL

3-1. DISASSEMBLY FLOW

DISASSEMBLY

3-2. BOTTOM PANEL ASSY

upper panel section

3-4. LCD MODULE, UPPER PANEL ASSY

main board section

3-6. BATTERY CASE ASSY, MAIN BOARD

3-7. MD MECHANISM DECK (MT-MZN1-171), CHASSIS ASSY

OP service assy (LCX-5R)

3-9. HOLDER ASSY

DC motor (sled) (M602)

TEST MODE

ELECTRICAL ADJUSTMENTS