Sony MCS-50 Service manual
MC-S50
SERVICE MANUAL
Ver 1.0 2001.03
SPECIFICATIONS
Audio specifications
Frequency response
20 – 20,000 Hz
Signal-to-noise ratio (S/N)
85 dB
Memory capacity
64 MB (including the system software:
61.1 MB available for music)
Available file 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.
WMA**
Bit rate: 64–160 kbps
**The files applied with the Microsoft
Windows Media Right Manage are
not supported.
Output
Headphones jack
Stereo mini jack
Connector (special mini jack)
USB 1.0 compliant
General
Power requirements
LR03 (Size AAA) alkaline battery × 1
USB bus power
Battery life
Approx. 6 hours (varies depending on
bit rate, volume, etc.)
AEP Model
Power consumption
Approx. 145 mW
Dimensions (approx.)
Approx. 22.4 × 99.0 × 25.9 mm (
×1 inches) (w/h/d)
Mass
Approx. 33g (1.2 oz ) (including
battery)
Operating temperature
5°C to 35°C (41°F to 95°F) (not
condensed)
Environment temperature
–20°C to 60°C (–4°F to 140°F) (not
condensed)
Supplied accessories
• LR03 (Size AAA) alkaline battery (1)
• Headphones (1)
• Headphones/earphones
extension cord (1)
• Neck strap (1)
• USB cable (1)
• CD-ROM (OpenMG Jukebox
installation disc) (1)
• MC-S50 Operating Instructions (1)
• OpenMG Jukebox Operating
Instructions
Design and specifications are subject to change
without notice.
(1)
29
/
× 4
32
PERSONAL NETWORK PLAYER
9-873-098-11 Sony Corporation
2001C0500-1 Audio Entertainment Group
C 2001.3 General Engineering Dept.
MC-S50
TABLE OF CONTENTS
1. SERVICING NOTES ..................................................3
2. GENERAL ......................................................................9
3. DISASSEMBLY
3-1. Disassembly Flow ............................................................ 10
3-2. Case Assy, Upper ............................................................. 10
3-3. Power Board ..................................................................... 11
3-4. “LOGIC Board”, “AUDIO Board”,
“FLEXIBLE (JACK) Board, Jack (J301)” ...................... 11
3-5. “LOGIC Board”,
“Display Panel, Liquid Crystal (LCD901)” .................... 12
4. DIAGRAMS
4-1. Block Diagram ................................................................. 13
4-2. Note for Printed Wiring Boards and
Schematic Diagrams ........................................................14
4-3. Printed Wiring Board – LOGIC Board –........................ 14
4-4. Schematic Diagram – LOGIC Board – .......................... 15
4-5. Printed Wiring Board – AUDIO Board – .......................16
4-6. Schematic Diagram – AUDIO Board – .......................... 17
4-7. Printed Wiring Board – POWER Board – ...................... 18
4-8. Schematic Diagram – POWER Board –......................... 19
4-9. IC Pin Function Description ............................................ 22
5. EXPLODED VIEWS
5-1. Upper Case Assy .............................................................. 26
5-2. Board Assy ....................................................................... 27
6. ELECTRICAL PARTS LIST ................................ 28
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.
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.
Sony, VAIO, the VAIO logo, Music Clip, OpenMG
and the OpenMG logo are trademarks 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.
2
MC-S50
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 Service Tool 9140 (FD) J-2507-037-1 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 the use of exclusive application (Service Tool) on the PC side enables various function checks and the
voltage adjustment.
5. For the LOGIC board in this set, if either part listed in Table 1 is faulty, be sure to replace the board block. Also, when a part on the
POWER board was replaced or a combination of LOGIC board and POWER board was changed due to the board replacement,
perform 1-5 "Adjustment When Board was Replaced/Repaired".
6. The data in Table 1-2 have been written to the LOGIC board.
7. In repairing other than above parts, repair as usual.
Table 1-1.
Board name Ref. No
LOGIC board IC601, IC602, IC603, IC901
Table 1-2.
Board name Stored data
LOGIC board Music data, Battery adjustment value , 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 c lear 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.
3
MC-S50
Work procedure
Preparation:
1. Make sure that no battery is loaded in the set.
2. Start up the test mode “apollo_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.
1
Note: If the block 1 does not “open”, the circuits in LOGIC board will be faulty. Audio signals are outputted from the reference signal in the DSP of
the set.
4
Operational description of Test mode
MC-S50
6
qd
2
4
8
qa
9
3
0
5
7
qs
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 Reading and Measurement
Connect an exclusive USB cable to the set, and available battery threshold values (converted values corresponding to voltage values)
written to the set at the shipment will be displayed at 5. (See Table 1-3)
These threshold values are inherent values of the set, but if they were readjusted during the board repair, newly set threshold values
(converted values corresponding to voltage values) are displayed.
Table 1-3.
Condition OFF Scale 1→2 Scale 2→3 Scale 3→4
Voltage set value 1.00 V 1.15 V 1.25 V 1.35 V
Converted value (ref.) 320 368 400 432
Note: The threshold values (conver ted values corresponding to voltage values) are different every set.
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 96
CODEC2 AT3 96
CODEC3 WMA 96
CODEC4 blank 0
5
MC-S50
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 51
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 30
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
•IBM PC/AT and compatibles
CPU: MMX
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
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
Pentium 233 MHz and above (Pentium II 400 MHz and
98 English
1-5. Adjustment When Board was Replaced/Repaired
When a part on the POWER board was replaced due to the repair or a combination of LOGIC board and POWER board was changed due
to the board replacement, perform 1. "Readjustment of Voltage for Battery Threshold Value" and 2. "Execution of Play Info Initialize" in
[Work Pr ocedure].
Replacing the board in this set will cause the status as shown in Table 1-4.
Table 1-4.
Board name Set status after board replacement
LOGIC 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 “apollo_service.exe” file, then
restart from the beginning.
6
MC-S50
Work Procedure
1. Readjustment of Voltage for Battery Threshold Value
Readjust the voltage through the steps given below.
(1) Start up the Test Mode "apollo_service.exe" in the Service Tool (J-2507-037-1) from the PC, and connect the set to the PC with an
excusive USB cable, and the following screen will appear.
At this time, the battery threshold values of available voltage written to the board are displayed at 5.
6
qd
2
4
8
qa
9
3
0
5
7
qs
(2) Apply the specified set voltage in Table 1-5 to the battery terminals from regulated DC power supply.
Then, click the button 6, and the converted values (threshold values) corresponding to the applied voltage will be displayed. Under
this condition, click the button 7 and newly converted values (threshold values) will be written in the "AD Level" at 5.
(3) For each step in Table 5, apply the specified set voltage so as to write the converted value (threshold value).
Table 1-5.
Condition OFF Scale 1→2 Scale 2→3 Scale 3→4
Voltage set value 1.00 V 1.15 V 1.25 V 1.35 V
Converted value (ref.) 320 368 400 432
Note: The threshold values (conver ted values corresponding to voltage values) are different every set.
Precautions
1. The regulated DC power supply to be applied should have as less ripple as possible within the voltage accuracy +/–0.01 V.
2. Use properly calibrated measuring instrument for the measurement of voltage to be applied.
3. Do not solder directly the battery terminals when applying the voltage. Use clips, etc. to connect to the battery terminals.
7
MC-S50
2. Execution of Play Info Initialize
If the LOGIC board was replaced for repair, ex ecute “Play Info Initialize” in block qd to return respectiv e functions to initial positions (see
Table 1-6).
Table 1-6.
Function Position
Play position Head of first music
VOL level 25
MEGA BASS OFF
PLAY MODE OFF
AVLS OFF
3. Checking after Repair
(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 follo wing instruc-
tion.
Using Music Clip player in
combination with Windows
Media
TM
Player 7
If you install Microsoft Windows MediaTM Player 7,
you can transfer a WMA file to your Music Clip player
and play it back. Refer to the online help for Windows
Media Player 7 for detailed operations.
Playing back WMA files with Music
Clip player
Installing Windows Media Player 7 and the
dedicated plug-ins
• Refer to Microsoft download website for the details
on how to obtain Windows Media Player 7.
• To use Windows Media Player 7 in combination
with your Music Clip player, you need to install the
dedicated plug-in software. This software has been
already installed when the NW-S4 driver was
installed using the enclosed OpenMG Jukebox CDROM.
Transferring (copying) a WMA file to your
Music Clip player
Music Clip player can only playback those WMA files
that are listed in the "Available File Formats" in the
"Options" dialog box on Windows Media Player 7 and
are of 64 to 160 kbps.
Notes
• If you check "Enable Personal Rights Management" on
the "CD Audio" tab in the "Options" dialog box when
recording a CD using Windows Media Player 7, the
music cannot be transferred to Music Clip player. To
enable the music transfer, remove the check mark when
recording the CD.
• It may be impossible to transfer the music contents
with copyright management information such as those
purchased via EMD.
Notes
• Songs checked-out
using the OpenMG
Jukebox (ATRAC3
and MP3) can also be
listened on the
Portable Device
screen of Windows
Media Player 7, but
they can not be played
back nor checked-in to
Windows Media
Player 7.
• The transferred
(copied) WMA files to
Music Clip player
from Windows Media
Player 7 are shown on
the OpenMG Jukebox
) mark and
with a (
you can not playback
nor check-in them to
the OpenMG Jukebox.
1
Start Windows Media Player 7 and click on the
"Portable Device" tab.
The "Portable Device" screen appears.
Copy Music button
Portable
Device tab
2
Connect your Music Clip player to the computer
(See page 9).
The computer recognizes your Music Clip player and
the songs downloaded in Music Clip player are shown
on the "Music On Device" window of Windows Media
Player 7. If the computer can not recognize your Music
Clip player, press the F5 key.
3
Transfer (copy) the songs to your Music Clip
player.
Select a WMA file you want to transfer (copy) to your
Music Clip player and click on the "Copy Music"
button on Windows Media Player 7 window.
This starts copying the selected song and its title is
added to the "Music On Device" window.
Refer to the online help of Windows Media Player 7
for details on copying music to a portable device.
Portable
Device
screen
16
8
17
SECTION 2
GENERAL
Parts and controls
Refer to the page numbers indicated in parentheses for details.
MC-S50
This section is extracted from
instruction manual.
1 VOL (volume) +/– (page 10)
2 Display (page 11)
3 MODE button (pages 12)
4 N/x (play/stop) button
(page 10)
5 ./> buttons (pages 11)
6 MEGA BASS/AVLS button
(page 13, 14)
7 Battery compartment
(page 7)
8 Clip
9 Headphones jack (page 10)
0 HOLD switch (page 15)
qa USB connector (page 9)
6
9
MC-S50
• This set can be disassembled in the order shown below.
3-1. DISASSEMBLY FLOW
Set Case assy, upper Power board
SECTION 3
DISASSEMBLY
“LOGIC board”,
“Audio board”,
“Flexible (jack) board, Jack (J301)”
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE ASSY, UPPER
1
Note 1:Use something like a thin board
when disconnected claws.
Note 2:Take care not to damage the cabinet.
screw (1.7 × 4)
“LOGIC board”,
“Display panel, liquid crystal (LCD901)”
2
8
claw
lid, battery case
9
claw
6
claw
7
claw
3
claw
4
claw
5
0
claw
case assy, upper
10
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