Sony Walkman NW-MS6, NW-MS9 Service Manual

SERVICE MANUAL

PORTABLE MEMORY STICK AUDIO PLAYER

Chinese Model

SPECIFICATIONS

NW-MS6

Ver 1.0 2001.06

9-873-180-01 Sony Corporation

2001F0500-1 Personal Audio Company
C 2001.6 Shinagawa Tec Service Manual Production Group

Recording time (when using the
supplied 32MB “MagicGate Memory
Stick”)

Approx. 30 min. (132kbps)
Approx. 40 min. (105kbps)
Approx. 60 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)

Operating temperature

5˚C to 35˚C (-41˚F to 95˚F)

Power source

• DC IN 1.2V (rechargeable Ni-Cd battery NC­6WM)

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

Battery life

Approx. 4 hours (continuous 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” and battery
NC-6WM)

Supplied accessories

32MB “MagicGate Memory Stick” (1)
Rechargeable battery (1)
Battery charger (1)
Earphones (1)
USB cable (1)
“Memory Stick” storage case (1)
Rechargeable battery carrying case (1)
CD-ROM (OpenMG Jukebox installation disc) (1)
NW-MS6 Operating Instructions (1)
OpenMG Jukebox Operating Instructions (1)

Design and specifications are subject to change
without notice.

2

NW-MS6

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. Printed 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

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 MANUAL OR IN SUPPLEMENTS PUB­LISHED BY SONY.

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.

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.

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.

Other features

•Compact size, light weight.

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

•Approximately 4 hours of continuous playback with a rechargeable nickel-cadmium battery.

•Recordable time: up to 30 min., 40 min., 60 min.**, on the supplied 32MB “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 32MB “MagicGate Memory Stick” at 132kbps, 105kbps, and 66kbps.

3

NW-MS6

• 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 .

SECTION 1

SERVICING NOTES

MAIN board

console unit

SUB board

servicing jig
(MAIN/SUB relay board)

4

NW-MS6

SECTION 2

GENERAL

This section is extracted from
instruction manual.

33

Other Information

Looking at the
controls

Network Walkman

(front)

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)

(rear)

6 i (Headphones/earphones) jack (page 11)
7 Hole for attaching the 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

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)

2

1

3

4

5

6

q;

qa

qs
qd

7

8

9

123

45

NW-MS6

5

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

3-1. DISASSEMBLY FLOW

SECTION 3

DISASSEMBLY

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

3-2. CASE BLOCK ASSY

Set

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

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

3-7. Console assy3-6.“Console unit”,
“Sub board”
“Main board”

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)

4

case block assy

A

NW-MS6

6

3-3. CASE

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.

1

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

console unit

knob (hold)

knob (hold)

switch

console unit

NW-MS6

7

3-4. GUIDE (LED)

3-5. CHASSIS (MAIN) ASSY

3

tapping screw
(M1.4 × 3.5)

q;

MI screw (M1.4)

7

four claws

8

two claws

qa

battery case lid assy

6

two claws

5

tapping screw
(M1.4 × 3.5)

qs

board section

qd

chassis (main) assy

4

guide (eject lid) section

9

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

1

Peel off the switch flexible board.

2

lid (eject) assy

A

3

label

2

tapping screw
(M1.4 × 3.5)

4

screw (M1.4)

6

cover (side)

5

two claws

7

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

1

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

A

B

NW-MS6

8

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

3-7. CONSOLE ASSY

4

console unit

1

connector (CN200)

6

MAIN board

3

console flexible board
(CN300)

5

SUB board

2

3

Remove the CONSOLE board
in the direction of arrow A.

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

when the console assy is installed.

1

Raise up three claws
in the direction of arrow.

2

three claws

4

chassis (LCD)

adhesive sheet (LCD 1

)

5

console assy

A

NW-MS6

9

3-8. CONSOLE BOARD

1

window (LCD)

2

button (play

)

3

CONSOLE board

10

NW-MS6

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)

[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.

6901 R6902

C8004 C8509 R6903

R5001R5003

C8008

R6018

R6027

R6028

R6035

R6037

C8016

C8014

C

R5002

R9015 C9007

R8103

R9019 R8102

R8607
R8104
R8608
R8105
R8110C8006

1

L9007

IC8000

IC5000

X8000

5643

SL0120

120 119 117 113 109 108 105 102 99 96 93

1 118 116 114 110 107 104 101 98 95 92
3 2 115 112 111 116 103 100 97 94 91
564 82

987 79
12 11 10 76
15 14 13 73
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

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

– MAIN BOARD (Conductor Side) –

battery terminal (+)

battery terminal

(–)

SL0120

+
–

ammeter

1.23Vdc

+
–

regulated dc

power supply

11

NW-MS6

[Flow Chart of Operations in the Test Mode]

[Items to Check in the Test Mode]

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.

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.

Enter the test mode

1. ROM/RAM Self-check

2. Display of version
and destination

3. Writing destination

(Checking voltage and

consumed electric current)

4. Checking the rated
voltage

5. Checking the LOW BATT
voltage

6. USB self-check

7. RTC self-check

8. Sleep mode

(Checking consumed electric current)

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

[DISPLAY]

key

[DISPLAY]

key

[DISPLAY]

key

[MENU]

key

[MENU]

key

[MENU]

key

[MENU]

key

[MENU]

key

[VOLUME+]

key

[VOLUME--]

key

LCD all off

LCD all lit

any key

v1.00.03JP

display example

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NW-MS6

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:

3-2. Writing destination

Note: When the displayed destination is correct, writing destination is no needed. But when the EEPROM check is performed, leav e 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 not, starts
blinking.
*) JP : Japanese model EU : AEP, UK, E, Hong Kong, Korean, Chinese models

US : US model X : French model

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.

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.

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.

TP9003

(VDDIO2)

IC8000

IC5000

TP9002

(VDDCORE)

TP (GND)

– MAIN BOARD (Conductor Side) –

1.HLFBT >

display

2.LOWBT >

display

13

NW-MS6

6. USB Self-check

The indication is displayed as below after entering this mode.

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.

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, however, waked up and enters
this test mode again.

3.USB >

display

4.RTC >

display

14

NW-MS6

MEMO