DOWNLOAD Sony NW-S4 Service Manual ↓ Size: 2.44 MB | Pages: 29 in PDF or view online for FREE

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

Sony NW-S4 Service Manual ▷ View online

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
blank
0
6
NW-S4
• 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 
×
 600 pixel) (supports High Color (16 bit) and
above)
• Internet access
5.
Firmware Info Check
The DSP program version and the flash memory capacity can be checked. (block 0)
The version at the shipment is as follows. (Versions will vary if updated)
Version
106
Flash memory size
64094208
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
17
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.
1-4.
Required System Configuration
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
Set status after board replacement
MAIN board
Music data and music information data stored in the set are cleared and not restored.
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 “
” file, then
restart from the beginning.
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  • DOWNLOAD Sony NW-S4 Service Manual ↓ Size: 2.44 MB | Pages: 29 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony NW-S4 in PDF for free, which will help you to disassemble, recover, fix and repair Sony NW-S4 Audio. Information contained in Sony NW-S4 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.