NW-S4 — Sony Audio Service Manual (repair manual)

Model
NW-S4
Pages
29
Size
2.44 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
nw-s4.pdf
Date

View Sony NW-S4 Service Manual online

SERVICE MANUAL
PORTABLE IC AUDIO PLAYER
US Model
SPECIFICATIONS
NW-S4
Ver 1.2  2001.07
9-873-071-13
Sony Corporation
2001G0500-1
Personal Audio Company
C
 2001.7
Shinagawa Tec Service Manual Production Group
2
NW-S4
Network Walkman is trademark of Sony
Corporation.
OpenMG and its logo are trademarks of Sony
Corporation.
WALKMAN is a registered trademark of Sony
Corporation.
Microsoft, Windows, Windows NT, Windows
Media, Windows Millennium Edition and their
logos are trademarks or registered trademarks of
Microsoft Corporation in the United States and/or
other countries.
US and foreign patents licensed from Dolby
Laboratories.
All other trademarks and registered trademarks are
trademarks or registered trademarks of their
respective holders.
TABLE  OF  CONTENTS
1.
SERVICING  NOTES
.................................................. 3
2.
GENERAL
...................................................................... 8
3.
DISASSEMBLY
3-1. Disassembly Flow .............................................................. 9
3-2. Lower Case Assy ................................................................ 9
3-3. Jack Flexible Module,
Jack (Small Type) (Water Proof) (J301) .......................... 10
3-4. MAIN Board .................................................................... 10
3-5. SUB Board ....................................................................... 11
4.
DIAGRAMS
4-1. Block Diagram ................................................................. 13
4-2. Note for Printed Wiring Boards and
Schematic Diagrams ........................................................ 14
4-3. Printed Wiring Board  – MAIN Board – ......................... 15
4-4. Schematic Diagram  – MAIN Board (1/2) – ................... 16
4-5. Schematic Diagram  – MAIN Board (2/2) – ................... 17
4-6. Printed Wiring Boards  – SUB Board – .......................... 18
4-7. Schematic Diagram  – SUB Board – ............................... 19
4-8. IC Pin Function Description ............................................ 21
5.
EXPLODED  VIEWS
5-1. Upper Case Assy .............................................................. 25
5-2. Board Assy ....................................................................... 26
6.
ELECTRICAL  PARTS  LIST
................................ 27
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing 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.
3
NW-S4
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
Ref. No.
Tool name
Part code
Application
1
Board check (Test mode) and readjustment after board replacement
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
MAIN board
IC601, IC602, IC603, IC901
Table 1-2.
Board name
Stored data
MAIN board
Music data, 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.
4
NW-S4
1
7
Work procedure
Preparation:
1. Make sure that no battery is loaded in the set.
2. Start up the test mode “
” of the service tool (
) 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 7 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-S4
qd
2
3
4
6
5
8
qs
0
9
qa
Operational description of Test mode
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.
Table 1-3.
Condition
Capacity 1
OFF
Capacity 2
1
Capacity 3
2
Capacity 4
3
Voltage set value
1.00V
1.15V
1.25V
1.35V
Converted value (ref.)
320
368
400
432
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.
Name
Version
CODEC1
MP3
106
CODEC2
AT3
106
CODEC3
WMA
106
CODEC4
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Download Sony NW-S4 Service Manual (Repair Manual)

Here you can view online or download Sony NW-S4 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony NW-S4 Audio. Information contained in Sony NW-S4 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).