NW-E10, NW-E7 — Sony Audio Service Manual (repair manual)

Model
NW-E10 NW-E7
Pages
25
Size
2.03 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
nw-e10-nw-e7.pdf
Date

View Sony NW-E10 / NW-E7 Service Manual online

NW-E7/E10
SERVICE MANUAL
NETWORK WALKMAN
SPECIFICATIONS
AEP Model
UK Model
E Model
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)
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
/
 
× 
17
/
32
  inches)
(w/h/d, projecting parts not included)
30.9 
× 92.4 × 14.7mm (1 
1
/
4
 
× 3 
3
/
 
× 
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.
Ver 1.3  2002.11
9-873-343-04
2002K0200-1
© 2002.11
Photo : NW-E7
Sony Corporation
Personal Audio Company
Published by Sony Engineering Corporation
2
NW-E7/E10
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
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 dam-
aged by heat.
TABLE OF CONTENTS
• Replacement of TMS320DA150GGU120 (IC601) used in the set requires
a special tool.
z
  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.
z
  USABLE FORMAT
Use ISO9660 Level 1 format.
Ver 1.1  2002.01
3
NW-E7/E10
Ver 1.1  2002.01
SECTION 1
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
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.
Ref. No
1
Tool name
Service tool 9140 (FD)
Part code
J-2507-037-1
Application
Board check (Test mode) and readjustment after board replacement
Board name
MAIN board
Ref. No
IC601, IC602, IC603, IC901
Board name
MAIN board
Stored date
Music date, Equalizer initial values, CODEC programs, and ID/IK codes
Table 1-1
Table 1-2
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.
4
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.
5
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.
Operational Description Of Test Mode
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)
Capacity 1 
t2
1.25V
 368
Capacity 2 
t3
1.27V
 400
Capacity 3 
t4
1.29V
432
OFF
1.00V
 320
Condition
Voltage set value
Converted value (ref.)
Name
MP3
AT3
blank
blank
Program No.
 CODEC1
CODEC2
CODEC3
CODEC4
Version
80
80
0
0

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Here you can view online or download Sony NW-E10 / NW-E7 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony NW-E10 / NW-E7 Audio. Information contained in Sony NW-E10 / NW-E7 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).