Sony NWE-10, NWE-7 Service manual

NW-E7/E10

SERVICE MANUAL

Ver 1.1 2002.01

Photo : NW-E7

SPECIFICATIONS

Recording time

NW-E7: Approx. 60 min. (132kbps)

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

NW-E10: Approx. 120min. (132kbps)

Approx. 160 min. (105kbps) Approx. 240 min. (66kbps)

Sampling frequency response

44.1kHz

Recording format

ATRAC3 MP3; Bit rate*: 32–256 kbps

Sampling rate: 32/44.1/48 kHz

*Variable bit rate files are not supported. Bit rate

higher than 128 kbps is not guaranteed when you select the sampling rate 32 or 48 kHz.

Frequency response

20 to 20,000 Hz (single signal measurement)

Output

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)

AEP Model

UK Model

NW-E7/E10

E Model

NW-E7

Power source

• DC IN 1.2V (internal nickel metal hydride battery)

• DC IN 4.5V (supplied AC power adaptor)

Battery life

Approx. 11 hours

Dimensions (approx.)

27.8 × 92.4 × 13.3mm (1 1/8 × 3 3/4 × 17/32 inches) (w/h/d, projecting parts not included)

30.9 × 92.4 × 14.7mm (1 1/4 × 3 3/4 × 19/32 inches) (including projecting parts)

Mass (approx.)

55g (1.9 oz) (battery included)

Memory capacity

NW-E7: 64MB (including the system software) NW-E10: 128MB (including the system software)

Supplied accessories

USB cradle (1) Earphones (1) USB cable (1) AC power adaptor (for the supplied USB cradle) (1) Carrying pouch (1) CD-ROM (OpenMG Jukebox installation disc) (1) NW-E7/E10 Operating Instructions (1) OpenMG Jukebox Operating Instructions (1)

Design and specifications are subject to change without notice.

9-873-343-02

NETWORK WALKMAN

Sony Corporation

Personal Audio Company Published by Sony Engineering Corporation

NW-E7/E10

Ver 1.1 2002.01

TABLE OF CONTENTS

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

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

2. GENERAL ..........................................................................9

3. DISASSEMBLY

3-1. Case............................................................................... 11

3-2. Battery, Nickel Hydrogen ............................................. 12

3-3. Main Board ................................................................... 12

4. DIAGRAMS

4-1. Block Diagrams ............................................................ 13

4-2. Printed Wiring Boards (Main Section) ......................... 14

4-3. Schematic Diagram (Main Section (1/2)) ..................... 15

4-4. Schematic Diagram (Main Section (2/2)) ..................... 16

5. EXPLODED VIEW

5-1. Main Section ................................................................. 19

5-2. Case Section.................................................................. 20

6. ELECTRICAL PARTS LIST ....................................... 21

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.

USABLE FORMAT

Use ISO9660 Level 1 format.

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.

• Replacement of TMS320DA150GGU120 (IC601) used in the set requires a special tool.

NW-E7/E10

SECTION 1

Ver 1.1 2002.01

SERVICING NOTES

1-1. INTRODUCTION

This document describes the “operation check for inspection (Test mode)” and “adjustment after board replacement for repair”. In performing these works, connect this set to the PC via a USB cable and use the following tool.

Tool List

Ref. No

Tool name

Service tool 9140 (FD)

1-2. BOARD REPAIR

1. In performing the work, the set should be in a complete state (all components assembled).

2. Install the “OpenMG Jukebox” and “WMP7 Plug-in” (CD-ROM) in the PC in advance.

3. Do not start up other applications in the PC.

4. This set has the Test mode, and various functions can be checked by using exclusive application (Service Tool) on the PC side.

5. Be sure to replace the MAIN board, if any part listed in Table 1-1 is faulty.

6. The data in Table 1-2 have been written to the MAIN board.

7. In repairing other than above parts, repair as usual.

Table 1-1

Board name

Ref. No

Part code

J-2507-037-1

Application

Board check (Test mode) and readjustment after board replacement

MAIN board

Table 1-2

Board name

MAIN board

IC601, IC602, IC603, IC901

Stored date

Music date, Equalizer initial values, CODEC programs, and ID/IK codes

1-3. OPERATION CHECK FOR INSPECTION (TEST MODE) PRECAUTIONS

1. Be sure to remove the battery from this set. (The power is supplied via USB cable) Operating the set in the Test mode with the battery loaded could clear necessary information.

2. If operation check was performed for inspection, execute “Play Info Initialize” in qd (see page 7) to return respective functions to initial positions (see Table 1-5 on page 7). In such a case, record current position of each function before executing “Play Info Initialize” in qd , if necessary.

NW-E7/E10

Ver 1.1 2002.01

Work Procedure

Preparation:

1. Make sure that no battery is loaded in the set.

2. Start up the test mode “appllo_service. exe” of the service tool (J-2507-037-1 ) from the PC, and check that the following screen appears.

3. Connect PC to this set with a USB cable. Check that the block 1 of the following screen “open”, and “1PC” is displayed on the LCD of the set. (The block 1 will “close” if the set is disconnected again) At this time, a sine wave is outputted from the headphone. Also, the model name is displayed in the block qd of the screen.

Note: If the block 1 does not “open”, the circuits in MAIN board will be faulty. Audio signals are outputted from

the reference signal in the DSP of the set.

Operational Description Of Test Mode

NW-E7/E10

Ver 1.1 2002.01

1. Audio Block Function Check

Clicking the UP or Down button in block 2 of the screen allows you to check with various output frequencies. Also, clicking the UP or Down button in block 3 can check variations of volume. Clicking the L, Stereo, R, or Mute button in block 4 can change audio output status.

2. Battery Threshold Value Check

Connect PC to this set with a USB cable, and the threshold values of battery residual capacity (voltage-converted values) written to the set at the shipment are displayed in the block 5 . Check that the displayed values are same as listed in Table 1-3.

Condition

Voltage set value

Converted value (ref.)

3. LCD Test

Clicking FULL (full lit), COL1 (column 1), COL2 (column 2), or OFF (full off) in block 8 results in all ON, column 1 ON, column 2 ON, or all OFF of the LCD on the set respectively.

4. CODEC Info Check

The CODEC programs and their versions written to the set can be checked. (block 9 ) The CODEC programs written to the set at the shipment are “MP3”, “ATRAC3”, and “WMA” and their versions are as listed below. (Versions will vary if updated)

Program No.

CODEC1

CODEC2

OFF

1.00V 320

Name

MP3

AT3

Capacity 1 t2

1.25V

Version

80 80

368

Capacity 2 t3

1.27V 400

Capacity 3 t4

1.29V 432

CODEC3 CODEC4

blank blank

0 0

NW-E7/E10

Ver 1.1 2002.01

5. Firmware Info Check

The DSP program version and the flash memory capacity can be checked. (blockq;) The version at the shipment is as follows. (Versions will vary if updated)

Model name

Version

Flash memory size

6. Sub-CPU Info Check

The Sub-CPU program version can be checked. (block qa ) The version at the shipment is as follows. (Versions will vary if updated)

Version 19

7. Key Check

Click the block qs while pressing a key on the set, and “ON” is displayed in the block associated with the pressed key, so that the key operation can be checked.

NW-E10

104

129564672

NW-E7

104

64094208

1-4. REQUIRED SYSTEM CONFIGURATION

• IBM ® PC/AT ® and compatibles CPU: MMX • Pentium • 233 MHz and above (Pentium II 400 MHz and above recommended) Hard disk drive space:20 MB and above (Free space is required, depending on the version of Windows 98 and the size of the audio data you are using.) RAM:64 MB and above CD-ROM drive Sound Board:Creative SoundBlaster 16 compatible Default built-in USB port

• Operating system:The default installation of Windows® 98 English version (The product does not work on Windows 95/3.1 or Windows NT. Not assured trouble-free if you use an upgrade version from Windows 95/3.1 to Windows 98.)

• Display:SVGA (800 x 600 pixel)(supports High Color (16 bit) and above)

• Internet access

1-5. ACTION IF MAIN BOARD WAS REPLACED

If the MAIN board was replaced, perform “1. Execution of Play Info Initialize” in work procedure provided below. When the MAIN board was replaced, the set status is as listed in Table 1-4.

Table 1-4

Board name

MAIN board

Precautions

1. Do not disconnect the USB cable in the midway of work.

2. If the operation on the PC side is not accepted during work, disconnect the USB cable and close the “appollo_service. exe” file,

then restart from the beginning.

Music data and music information data stored in the set are cleared and not restored.

Set status after board replacement

NW-E7/E10

Ver 1.1 2002.01

Operational Procedure

1. Readjustment of battery voltage threshold value Readjust the voltage with the following procedure.

(1) Start up the service tool (J-2507-037-1) test mode “appollo_service.exe” on the PC and connect the main block to the PC using the

USB cable. The following screen will be displayed. At this time the remaining battery setting voltage threshold value written into the circuit board will be displayed on block 5.

(2) Provide the regulation setting voltage in table 5 from a DC regulated power supply to the battery terminal.

Next, when block 6 is clicked, the conversion value (threshold value) of the voltage value provided will be displayed. Clicking block 7 in this condition will write a new conversion value (threshold value) to block 5’s “AD Level”.

(3) Provide the regulation setting voltage and write the conversion value (threshold value) for each step in table 1-5.

Table 1-5

Condition

Voltage set value

Converted value (ref.)

Caution: The threshold value (the conversion value corresponding to the voltage value) will be different for each set.

Precautions:

1. Apply a voltage accuracy of within ±0.01V with minimum ripple for the voltage of DC regulated power supply.

2. Use a proofed (calibrated) measuring instrument to measure the voltage applied.

3. Do not apply solder directly on the battery terminal when applying voltage to the battery terminal. Use clips, etc., to connect to the battery terminal.

OFF

1.00V 320

Capacity 1 t2

1.25V 368

Capacity 2 t3

1.27V 400

Capacity 3 t4

1.29V 432

NW-E7/E10

Ver 1.1 2002.01

Work procedure

2. Execution of Play Info Initialize

If the MAIN board was replaced for repair, execute “Play Info Initialize” in block qd to return respective functions to initial positions (see T able 1-6). Note: In executing the “Play Info Initialize”, set the slide switches to the following positions.

AVLS switch ..... NORM

HOLD switch .... OFF

Table 1-6

Function

Position

Play position

VOL level

MEGA BASS

AVLS

PLAY MODE

3. Check after Work

(1) After work, check that the set operates normally through the operation in 1-3. “Operation Check for Inspection (Test Mode)” (see

page 3).

(2) Make sure that the check-out and check-in can be made using the PC applications “OpenMG Jukebox” (CODEC programs “MP3”

and “ATRAC3”) and “Windows Media Player 7” (CODEC program “WMA”). Also, make sure that the checked out data can be played normally. Note: Do not start up the “OpenMG Jukebox” and the “Windows Media Player 7” simultaneously.

(3) For an installation and acquisition method of “Windows Media Player 7” (CODEC program “WMA”), refer to the following

instruction.

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