Sony nw s 21 service manual

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2 NW-S21/S23 TABLE OF CONTENTS 1. SERVICING NOTES ............................................... 3 2. GENERAL ................................................................... 4 3. DISASSEMBLY 3-1. Disassembly Flow ........................................................... 5 3-2. Case (Rear) Sub Assy ...................................................... 5 3-3. Chassis (Battery Case Lid) .............................................. 6 3-4. MAIN Board .................................................................... 6 3-5. DISPLAY Board .............................................................. 7 4. TEST MODE .............................................................. 8 5. DIAGRAMS 5-1. Block Diagram ................................................................ 9 5-2. Printed Wiring Board -“ MAIN Board -“ ......................... 11 5-3. Schematic Diagram -“ MAIN Board (1/2) -“ ................... 12 5-4. Schematic Diagram -“ MAIN Baord (2/2) -“ ................... 13 5-5. Printed Wiring Board -“ DISPLAY Board -“ ................... 14 5-6. Schematic Diagram -“ DISPLAY Board -“ ...................... 15 6. EXPLODED VIEW 6-1. Case (Front) Block .......................................................... 20 6-2. Battery Case Block .......................................................... 21 6-3. Board Block ..................................................................... 22 7. ELECTRICAL PARTS LIST ................................ 23 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. Flexible Circuit Board Repairing -Keep the temperature of the soldering iron around 270 ËšC 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. Supplied accessories Headphones (1) Dedicated USB cable (1) Arm band (1) CD-ROM for the SonicStage software (1) Operating Instructions (1) SonicStage Operating Instructions (1) CD-ROM for the Operating Instructions and SonicStage Operating Instructions (1) (European model only) Pour les utilisateurs en France En cas de remplacement des écouteurs, référez-vous au modèle découteurs adaptés à votre appareil et indiqué ci-dessous. MDR-J011LP Design and specifications are subject to change without notice.

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3 NW-S21/S23 SECTION 1 SERVICING NOTES -Replacement of CXR704060-201GA (IC400) and SST32HF802-70-4C-L3KE (IC450) used in this set requires a special tool. 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 ËšC 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 ËšC. 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 viscou-s (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. Providing the required system environment The following system environment is required in order to use the SonicStage Ver. 2.1 for the Network Walkman. This software is not supported by the following environments: -OSs other than the indicated above -Personally constructed PCs or operating systems -An environment that is an upgrade of the original manufacturer-installed operating system -Multi-boot environment -Multi-monitor environment -Macintosh -We do not ensure trouble-free operation on all computers that satisfy the system requirements. -The NTFS format of Windows XP/Windows 2000 Professional can be used only with the standard (factory) settings. -We do not ensure trouble-free operation of the system suspend, sleep, or hibernation function on all computers. -For Windows 2000 Professional users, install Service Pack 3 or later version before using the software. System requirements Computer IBM PC/AT or Compatible -CPU: Pentium II 400 MHz or higher (Pentium III 450 MHz or higher is recommended.) -Hard disk drive space: 200 MB or more (1.5 GB or more is recommended) (The amount space will vary according to Windows version and the number of music files stored on the hard disk.) -RAM: 64 MB or more (128 MB or more is recommended) Others -CD drive (capable of digital playback by WDM)-Sound Board-USB port (supports USB (previously USB 1.1)) Operating SystemFactory installed: Windows XP Media Center Edition 2004/Windows XP Media Center Edition/Windows XP Professional/Windows XP Home Edition/ Windows 2000 Professional/Windows Millennium Edition/Windows 98 Second Edition Display High Color (16bit) or higher, 800 -‹… 600 dots or better (1024-‹… 768 dots or better is recommended) Others -Internet access: for Web registration, EMD services and CDDB-Windows Media Player (version 7.0 or higher) installed for playing WMA files Notes