Sony NW-MS9 Service manual

NW-MS9

SERVICE MANUAL

Ver 1.0 2001.02

SPECIFICATIONS

Recording time (when using the
supplied 64MB “MagicGate Memory
Stick”)

Approx. 60 min. (132kbps)
Approx. 80 min. (105kbps)
Approx. 120 min. (66kbps)

Sampling frequency response

44.1kHz

Recording format

ATRAC3

Frequency response

20 to 20,000 Hz (single signal measurement)

Output

Headphone/earphone: stereo mini-jack

Signal-to-noise ratio (S/N)

More than 80dB (excluding 66 kbps)

Dynamic range

More than 85dB (excluding 66 kbps)

Battery life

Approx. 10 hours (back-to-back playback)

Dimensions (approx.)

36 × 81.4 × 14.1 mm (1 7/16 × 3 1/4 × 9/16 inches)
(w/h/d, projecting parts not included)

Mass (approx.)

67g (2.4 oz) (includes “Memory Stick,” battery
NH-14WM)

Supplied accessories

64MB “MagicGate Memory Stick” (1)
Rechargeable battery (1)
Battery charger (1)
AC plug adaptor (1) (Except U.S.A, Europe,
Hong Kong, Korea model)
Earphones (1)
USB cable (1)
“Memory Stick” storage case (1)
Rechargeable battery carrying case (1)
Carrying pouch (1) (Except for U.S.A model)
Key ring (1)
CD-ROM (OpenMG Jukebox installation disc) (1)
NW-MS9 Operating Instructions (1)
OpenMG Jukebox Operating Instructions (1)

US Model

AEP Model

UK Model

E Model

Operating temperature

5˚C to 35˚C (-41˚F to 95˚F)

Power source

• DC IN 1.2V (gum type, secondary battery
Ni-MH (NH-14WM))

• Power for USB (supplies from the computer
through supplied USB cable)

9-873-028-11 Sony Corporation

2000B0500-1 Audio Entertainment Group
C 2001.2 General Engineering Dept.

Design and specifications are subject to change

without notice.

PORTABLE MEMORY STICK AUDIO PLAYER

NW-MS9

TABLE OF CONTENTS

1. SERVICING NOTES............................................... 3

2. GENERAL ................................................................... 4

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 5

3-2. Case Block Assy.............................................................. 5

3-3. Case ................................................................................. 6

3-4. Guide (LED).................................................................... 7

3-5. Chassis (Main) Assy ....................................................... 7

3-6. “Console Unit”, “SUB Board”, “MAIN Board” ............ 8

3-7. Console Assy ................................................................... 8

3-8. CONSOLE Board ........................................................... 9

4. TEST MODE.............................................................. 10

5. DIAGRAMS

5-1. Block Diagram –MAIN Section – .................................. 15

5-2. Block Diagram

–DISPLAY/POWER SUPPLY Section – ....................... 16

5-3. Note for Printed Wirinig Boards and

Schematic Diagrams ....................................................... 17

5-4. Printed Wiring Boards –MAIN Section – ...................... 19

5-5. Schematic Diagram –MAIN Section (1/4) –.................. 20

5-6. Schematic Diagram –MAIN Section (2/4) –.................. 21

5-7. Schematic Diagram –MAIN Section (3/4) –.................. 22

5-8. Schematic Diagram –MAIN Section (4/4) –.................. 23

5-9. Schematic Diagram –SUB Section (1/2) –..................... 24

5-10. Schematic Diagram –SUB Section (2/2) – ..................... 25

5-11. Pr inted Wiring Board –SUB Section – ........................... 26

5-12. IC Pin Function Description ........................................... 31

6. EXPLODED VIEWS

6-1. General Section ............................................................... 39

6-2. MAIN Board Section ...................................................... 40

7. ELECTRICAL PARTS LIST ............................... 41

Other features

•Compact size, light weight.

•Skip-proof: you can enjoy uninterrupted enjoyment of music during physical activities such as
jogging or commuting.

•Approximately 10 hours of continuous playback with a rechargeable nickel hydride battery.

•Recordable time: up to 60 min., 80 min., 120 min.**, on the supplied 64MB “MagicGate Memory
Stick.”

•Backlight LCD screen: song titles and artist names can be displayed.

•High speed data transfer using the supplied USB cable.

•OpenMG Jukebox software enables you to record compact discs using the ATRAC3 format
(high sound quality, high compression) to the hard drive.

* The copyright protection technology of Network Walkman conforms to the SDMI (Secure Digital Music

Initiative) specifications.

**Differs according to the bit rate when recording. In this case, the figures for the recordable time are when

recording on a 64MB “MagicGate Memory Stick” at 132kbps, 105kbps, and 66kbps.

NOTES:

• The recorded music is limited to private use only. Use of the music beyond this limit requires permission

of the copyright holders.

• Sony is not responsible for music files that are not saved on your computer due to unsuccessful recording

from CD or music downloading.

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.

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.

2

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.

SECTION 1

SERVICING NOTES

• NOTE FOR REPLACING THE EEPROM (IC6002)

In case of replacing the EEPROM (IC6002) when repairing this
set, it is necessary to write the setting for destination.
When replacing the EEPROM (IC6002), write the setting for
destination, referring to “4. TEST MODE, Items to Check in
the Test Mode, 3-2. Writing Destination”.

• Replacement of MBM29LV400BC-90PBT (IC5000),
HY62UF16201ALLF (IC5600), CXD9534BGG (IC7001) and
CXD1859GA (IC8000) used in this set requires a special tool.

• To check the operation when the MAIN board and SUB board
are removed, check it after connecting CN100 on the MAIN
board and CN200 on the SUB board with the servicing jig (relay
board between the MAIN board and SUB board) as shown below .

MAIN board

NW-MS9

console unit

SUB board

servicing jig
(MAIN/SUB relay board)

3

NW-MS9

Looking at the
controls

SECTION 2

GENERAL

(rear)

6

This section is extracted from
instruction manual.

q;

Network Walkman

(front)

1

1 Access lamp (page 9)
2 Seesaw key (page 11-14, 16-22)
3 Display (page 12, 15)
4 Memory Stick slot (page 9, 11)
5 Battery compartment (page 8)

2

3

4

5

7

qa

8

9

qs
qd

6 i (Headphones/earphones) jack (page 11)
7 Hole for attaching the key ring or strap

(The strap is not supplied)

8 HOLD switch (page 16)
9 MEGA BASS/AVLS button (page 14)
0 VOLUME +/– buttons (page 11, 16)
qa Dedicated USB jack (page 9)
qs MENU button (page 13, 16-22)
qd DISPLAY button (page 12, 15)

Display

12

3

Other Information

45

1 Text/graphic information display

(page 15)

2 Playback mode indication (page 13)
3 AVLS indication (page 14)
4 MEGA BASS indication (page 14)
5

Battery

remain indication (page 8)

33

4

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

3-1. DISASSEMBLY FLOW

NW-MS9

SECTION 3

DISASSEMBLY

Set

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

3-2. Case block assy 3-3. Case

“Sub board”
“Main board”

,

3-2. CASE BLOCK ASSY

3-4. Guide (LED) 3-5. Chassis (main) assy

3-7. Console assy3-6.“Console unit”,

3-8. Console board

1

tapping screw
(M1.4 × 3.5)

3

Remove the strap shaft assy rotating
in the direction of arrow A.

2

tapping screw
(M1.4 × 3.5)

A

4

case block assy

5

NW-MS9

3-3. CASE

console unit

console unit

switch

knob (hold)

1

Inclining the console unit in the direction of arrow,
remove the switch from the knob (hold).

knob (hold)

3

case

2

Take off the console flexible board
from the case.
Note: Take care not to break

the console flexible board
when taking it off.

6

3-4. GUIDE (LED)

6

cover (side)

7

Remove the guide (LED)
in the direction of arrow B.

5

two claws

NW-MS9

B

4

screw (M1.4 × 2)

3-5. CHASSIS (MAIN) ASSY

9

Open the battery case lid assy
in the direction of arrow A.

A

3

label

2

q;

MI screw (M1.4)

tapping screw
(M1.4 × 3.5)

7

four claws

A

1

3

tapping screw
(M1.4 × 3.5)

Open the lid (PC)
in the direction of arrow A.

2

lid (eject) assy

qa

battery case lid assy

8

two claws

qd

chassis (main) assy

6

two claws

4

guide (eject lid) section

5

tapping screw
(M1.4 × 3.5)

qs

board section

1

Peel off the switch flexible board.

7

NW-MS9

)

3-6. “CONSOLE UNIT”, “SUB BOARD”, “MAIN BOARD”

4

console unit

1

connector (CN200)

3

console flexible board
(CN300)

6

MAIN board

3-7. CONSOLE ASSY

A

2

5

3

Remove the CONSOLE board
in the direction of arrow A.

SUB board

5

console assy

adhesive sheet (LCD 1

1

Raise up three claws
in the direction of arrow.

8

2

three claws

4

chassis (LCD)

Note: Make it sure to use the new adhesive sheet (LCD 1)

when the console assy is installed.

3-8. CONSOLE BOARD

1

window (LCD)

2

button (play)

NW-MS9

3

CONSOLE board

9

NW-MS9

C8014

C

5643

SECTION 4

TEST MODE

[Preparation]

Checking consumed electric current is one of the items to check. Connect an ammeter before setting the test mode.
(Refer to the following figure)

regulated dc

ammeter

power supply

– MAIN BOARD (Conductor Side) –

battery terminal (+)

6901 R6902

SL0120

17 25 33 41
18 26 34 42
19 27 35 43
20 28 36 44
21 29 37 45
22 30 38 46
23 31 39 47
24 32 40 48

L9007

R9015 C9007

SL0120

R9019 R8102

R5001R5003

X8000

R5002

+
–

R8103

120 119 117 113 109 108 105 102 99 96 93

1 118 116 114 110 107 104 101 98 95 92

R8607

3 2 115 112 111 116 103 100 97 94 91
564 82

R8104

987 79

R8608

12 11 10 76

R8105

15 14 13 73

R8110C8006

18 17 16 70
20 21 19 67
24 23 22 66
25 26 27 34 37 40 43 46 49 52 61
24 28 32 35 38 41 45 47 50 53 55
30 31 33 36 39 42 44 48 51 54 56

+
–

1.23Vdc

battery terminal

(–)

IC8000

1

IC5000

C8004 C8509 R6903

C8008

R6018

R6027

R6028

R6035

R6037

C8016

[Setting the Test Mode]

There are following two methods of entering the test mode.

Method 1:

Short the short lands (SL0120) on the MAIN board with a solder bridge, then turn on the power.

Method 2:

Turn on the po wer with the [HOLD] switch OFF. If the set is left as it is, the LCD display becomes on, and after for a while, it changes into
the sleep status (LCD off). Before the status of the display changes into the sleep status, turn ON the [HOLD] switch and press Hs t

[MEGA BASS] t Hs t [VOLUME--] t Hs t [VOLUME+] keys in this order.

[Releasing the Test Mode]

There are following two methods of releasing the test mode.

In case of enter the test mode with the method 1:

Turn off the power and open the solder bridge on the short lands (SL0120) on the MAIN board.

In case of enter the test mode with the method 2:

Turn off the power.

10

[Flow Chart of Operations in the Test Mode]

Enter the test mode

1. ROM/RAM Self-check

2. Display of version
and destination

[VOLUME+]

key

NW-MS9

[VOLUME--]

key

[DISPLAY]

LCD all lit

[DISPLAY]

LCD all off

[DISPLAY]

key

key

key

[Items to Check in the Test Mode]

3. Writing destination

(Checking voltage and

consumed electric current)

[MENU]

key

4. Checking the rated
voltage

[MENU]

key

5. Checking the LOW BATT
voltage

[MENU]

6. USB self-check

[MENU]

7. RTC self-check

[MENU]

key

key

key

(Checking consumed electric current)

8. Sleep mode

any key

Waking up with the normal mode
(Waking up with the test mode, if
the short lands (SL0120) have
been short)

1. ROM/RAM Self-check

After entering the test mode, ROM/RAM self-check is performed automatically in the first place. By entering the test mode with ke y input,
however, no RAM check is performed.

1 Result of the ROM/RAM check is OK:

The LCD back light turns on, and version and destination is displayed automatically.

2 Result of the ROM check is NG:

“BAD ROM” is displayed on the LCD, and the LCD back light keeps blinking.

3 Result of the RAM check is NG:

Nothing is displayed on the LCD, and the LCD back light keeps blinking

2. Display of Version and Destination

Version and destination are displayed as follows.

display example

v0.09.05JP

Every time the [DISPLAY] key is pressed, the display changes as “version and destination t LCD all lit t LCD all off t version and
destination...”.

Also, pressing the [VOLUME+] key changes the mode to writing destination, and if pressing the [VOLUME--] key, the unit goes into the
sleep mode.

11

NW-MS9

3. Writing Destination (Checking Voltage and Consumed Electric Current)

After entering this mode, display of version and destination blinks. (The LCD back light turns off)

3-1. Checking voltage and consumed electric current

Note: Perform checking voltage and consumed electric current with the LCD back light off.

Specified value :

VDDCORE voltage : 1.8 to 2.0 V (voltage between TP9002 (VDDCORE) and TP (GND))
VDDIO2 voltage : 2.7 to 2.9 V (voltage between TP9003 (VDDIO2) and TP (GND))
Consumed electric current : below 200 mA

Connecting Location:

– MAIN BOARD (Conductor Side) –

TP9002

(VDDCORE)

IC8000

TP (GND)

3-2. Writing destination

Note: When the displayed destination is correct, writing destination is no needed. But when the EEPROM check is performed, leave the display as it is and

press the [DISPLAY] key to perform this check.
After replacing the EEPROM, make it sure to write destination.

Every time the [MEGA BASS] key is pressed, the display changes as t “JP t US t EU t X t JP t...”.
Select the destination*, and press the [DISPLAY] key to fix. Then the LCD display changes from blinking to being on. Also at the same
time, checking destination written on the EEPROM is performed, and when the result is OK, the LCD back light turns on, and if n ot, starts
blinking.
*) JP : Japanese model EU : AEP, UK, E, Hong Kong, Korean models

US : US model X : French model

IC5000

TP9003

(VDDIO2)

4. Checking the Rated Voltage

Note: Before entering this mode , check that the input voltage is the specified value (1.23 V).

Press the [MENU] key after “3-2. Writing Destination” to enter this mode. The check is started automatically.

display

1.HLFBT >

When the result is OK, “1. HLFBT >OK” is displayed on the LCD. And if the result is NG, “1. HLFBT >NG” is displayed.

5. Checking LOW BATT Voltage

Note: Before entering this mode, adjust the input voltage to the LOW BATT voltage value (0.95 V).

Press the [MENU] key after “4. Checking the rated voltage” to enter this mode. The check is started automatically.

display

2.LOWBT >

When the result is OK, “2. LOWBT >OK” is displayed on the LCD. And if the result is NG, “2. LOWBT >NG” is displayed.
Press the [MENU] key to go to the next USB self-check.

12

NW-MS9

6. USB Self-check

The indication is displayed as below after entering this mode.

display

3.USB >

This mode is not used in servicing.
Press the [MENU] key to go to the next RTC self-check.

7. RTC Self-check
The indication is displayed as below after entering this mode.

display

4.RTC >

The check on writing/reading real time clock is performed automatically and when the result is OK, “4. RTC >OK” is displayed on the
LCD and LCD back light turns on. If the result is NG, “4. RTC >NG” is displayed and the LCD back light blinks.
Press the [MENU] key to go back to “2. Display of Version and Destination”.

8. Sleep Mode (Checking Consumed Electric Current)
When the [VOLUME--] key is pressed at “2. Display of Version and Destination”, the unit goes into sleep mode.
Once entering this mode, the LCD turns off and the unit goes into the sleep (standby) status. After being into the sleep status, check that
consumed electric current is within the specified value.
Specified value : below 1 mA

The unit is waked up with normal mode with pressing any key. If the short lands (SL0120)) has been short, howe v er, waked up and enters
this test mode again.

13

NW-MS9

MEMO

14