索尼 MZ-NF520D 电路图 维修手册.pdf

SERVICE MANUAL PORTABLE MINIDISC PLAYER US Model Canadian Model SPECIFICATIONS MZ-NF520D US and foreign patents licensed from Dolby Laboratories. Continued on next page Model Name Using Similar Mechanism MZ-NE410 Mechanism Type MT -MZN710-177 Optical Pick-up Name LCX-5R Ver 1.0 2004.03 9-877-578-01 Sony Corporation 2004C1678-1 Personal Audio Company C 2004.03 Published by Sony Engineering Corporation SonicStage, MD Simple Burner, OpenMG, Magic Gate, MagicGate Memory Stick, Memory Stick, Net MD, AT R AC , ATRAC3, ATRAC3plus and their logos are trademarks of Sony Corporation. Microsoft, Windows, Windows NT and Windows Media are trademarks or registered trademarks of Microsoft Corporation in the United States and /or other countries. IBM and PC/AT are registered trademarks of International Business Machines Corporation. Macintosh is a trademark of Apple Computer, Inc. in the United States and/ or other countries. MMX and Pentium are trademarks or registered trademarks of Intel Corporation. All other trademarks and registered trademarks are trademarks or registered trademarks of their respective holders. and ® marks are omitted in this manual. MD Player Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 790 nm Emission duration: continuous Laser output: less than 44.6 µ W (This output is the value measured at a distance of 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.) Recording and playback time (when using MDW-80) Maximum 160 min. in monaural Maximum 320 min. in LP4 stereo Revolutions Approx. 380 rpm to 2,700 rpm Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Coding ATRAC (Adaptive TRansform Acoustic Coding) AT R A C 3 LP2/LP4 Modulation system EFM (Eight to Fourteen Modulation)2 MZ-NF520D SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PA RTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUM- BERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE- MENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ! LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY. Number of channels 2 stereo channels 1 monaural channel Frequency response 20 to 20,000 Hz ± 3 dB Outputs i: stereo mini-jack, maximum output level 5 mW + 5 mW, load impedance 24 (USA) 5 mW + 5 mW, load impedance 16 (Canada) Radio Frequency range USA model: FM: 87.5 - 108.0 MHz TV: 2 - 13 CH WEATHER: 1 - 7 CH Canadian model: FM: 87.5 - 108.0 MHz Antenna FM/TV/WEATHER: Headphones/earphones cord antenna General Power requirements One LR6 (size AA) alkaline battery (not supplied) Recommended temperature for check-in/check-out +5 ° C (+41° F) or higher Dimensions Approx. 81 × 30.7 × 74.4 mm (w/h/d) (3 1 /4 × 1 1 /4 × 3 in.) without projections. Mass Approx. 115 g (4.1 oz) the player only US and foreign patents licensed from Dolby Laboratories. Design and specifications are subject to change without notice. Battery operation time Supplied accessories * Do not play a CD-ROM on an audio CD player. CD-ROM (SonicStage Ver. 2.0 and MD Simple Burner Ver. 2.0) (1)* Headphones with a remote control (1) (for USA model) Dedicated USB cable (1) Earphones with a remote control (1) (for Canadian model) 1) When using a new Sony LR6 (size AA) alkaline dry battery (produced in Japan). When SP Stereo LP2 Stereo LP4 Stereo playing 2) 2) Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries Association) standard. Approx. 36 hours Approx. 42.5 hours Approx. 48 hours transferring audio data from the computer 3) 3) The numbers of tracks that can be transferred differs according to the computers operating environment. 55 tracks (of about 5 minutes each) 230 tracks (of about 5 minutes each) 325 tracks (of about 5 minutes each) When FM TV/Wb(weather)(USA model only) using the radio Approx. 18.5 hours Approx. 17 hours3 MZ-NF520D CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. Notes on chip component replacement N ever reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. Flexible Circuit Board Repairing K eep 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. 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. 1. SERVICING NOTES . 4 2. GENERAL . 5 3. DISASSEMBLY 3-1. Disassembly Flow . 6 3-2. Case (Lower) . 7 3-3. MAIN Board. 7 3-4. Panel (Upper) Section . 8 3-5. LCD Module, Button (Control) . 8 3-6. Mechanism Deck (MT-MZN710-177) . 9 3-7. Set Chassis Assy . 9 3-8. OP Service Assy (LCX-5R) . 10 3-9. Holder Assy . 11 3-10. DC Motor (Sled) (M602) . 11 3-11. DC Motor (Over Write Head Up/Down) (M603), DC SSM18B Motor (Spindle) (M601) . 12 4. TEST MODE . 13 5. ELECTRICAL ADJUSTMENTS. 18 6. DIAGRAMS 6-1. Block Diagram . 37 6-2. Printed Wiring Board - MAIN Board (Side A) . 39 6-3. Printed Wiring Board - MAIN Board (Side B) . 40 6-4. Schematic Diagram - MAIN Board (1/4) . 41 6-5. Schematic Diagram - MAIN Board (2/4) . 42 6-6. Schematic Diagram - MAIN Board (3/4) . 43 6-7. Schematic Diagram - MAIN Board (4/4) . 44 6-8. IC Pin Function Description . 49 7. EXPLODED VIEWS 7-1. Case Section . 55 7-2. Chassis Section . 56 7-3. MAIN Board Section . 57 7-4. Mechanism Deck Section-1 (MT-MZN710-177) . 58 7-5. Mechanism Deck Section-2 (MT-MZN710-177) . 59 8. ELECTRICAL PARTS LIST. 60 TABLE OF CONTENTS4 MZ-NF520D NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (LCX-5R) The laser diode in the optical pick-up block may suffer electro- static break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform mea- sures against electrostatic break-down sufficiently before the op- eration. The flexible board is easily damaged and should be handled with care. OPTICAL PICK-UP FLEXIBLE BOARD SECTION 1 SERVICING NOTES laser-tap In performing the repair with the power supplied to the set, re- moving the MAIN board causes the set to be disabled. In such a case, make a solder bridge to short SL802 (OPEN/ CLOSE) on the MAIN board in advance. upper panel assy MAIN board FLEXIBLE board (over write head) T his set requires the patch data in the nonvolatile memory (IC852) to be rewritten using the application, when the MAIN board was replaced. (See page 28) Handle the FLEXIBLE board (over write head) with care, as it has been soldered directly to the MAIN board. In repairing the component side of MAIN board, connect the FLEXIBLE board (over write head) and the MAIN board with the lead wires in advance. SL802 (OPEN/CLOSE) - MAIN board (Side B) - Providing the required system environment The following system environment is required in order to use the SonicStage Ver. 2.0/MD Simple Burner Ver. 2.0 software for the MD Walkman. This software is not supported by the following environments:OSs other than the indicated abovePersonally constructed PCs or operating systemsAn environment that is an upgrade of the original manufacturer-installed operating systemMulti-boot environmentMulti-monitor environmentMacintoshWe 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 C P U : P e ntium II 400 MHz or higher (Pentium III 450 MHz or higher is recommended.) H a r d d i s k 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.) R A M : 6 4 M B o r m o re (128 MB or more is recommended) Others C D d r i v e ( c apable of digital playback by WDM) S o u nd Board U S B p o rt (supports USB (previously USB 1.1) Operating System Factory 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 W i n d o w s M e d i a P l ayer (version 7.0 or higher) installed for playing WMA files Notes5 MZ-NF520D SECTION 2 GENERAL Looking at the controls Front of the player A Display window B VOLUME +* and button * The VOLUME + button has a tactile dot. C 4-position control key ENTER/NX (enter/play/pause)* . and > (search/AMS) x/CANCEL (stop/cancel) * The ENTER/NX button has a tactile dot. D MENU button E GROUP button F USB jack When connecting to your computer, connect the dedicated USB cable to this jack. G HOLD switch Hi (headphones/earphones) jack 3 5 6 7 4 8 1 2 Back of the player A OPEN button B Hand strap hole Use the hole to attach your own strap. C Battery compartment lid The display window of the player A Disc indication B Group mode indication Lights up when group mode is on. C Track number display D Battery level indication Shows approximate battery condition. E Play mode indication Shows play mode of the MD. F SOUND indication G Disc, group, track indication H Character information display Displays the track names, elapsed time, etc. 1 3 2 1 2 3 4 5 6 7 8 The headphones/earphones with a remote control A VOL +, buttons Press to adjust the volume. B Jog lever (. NX/ENT >, TUNE BAND TUNE +) NX/ENT (to press): play, pause, enter .(to slide towards): REW > (to slide towards): FF BAND (to press): select a band TUNE (to slide towards): tune backward TUNE + (to slide towards): tune forward C Display window Dx (stop) button E (group) +, buttons F RADIO ON/OFF button Press to turn on or off the radio. G Clip H HOLD switch To prevent the buttons from being accidentally operated when you carry the player, use this function. I DISPLAY button J P-MODE/ button K SOUND button F G H I J K B C D E A The display window of the remote control A Disc indication B PRESET indication C Character information display D Play mode indication E SOUND indication F Battery level indication G Track number/Band/Preset number display F G BACD E This section is extracted from instruction manual.6 MZ-NF520D SECTION 3 DISASSEMBLY This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW 3-2. CASE (LOWER) (Page 7) 3-3. UPPER PANEL SECTION (Page 7) 3-4. LCD MODULE, BUTTON (CONTROL) (Page 8) 3-6. MECHANISM DECK (MT -MZN710-177) (Page 9) 3-7. SET CHASSIS ASSY (Page 9) 3-5. MAIN BOARD (Page 8) In order to remove mechanism deck, please remove MAIN board and upper panel section. 3-8. OP SERVICE ASSY (LCX-5R) (Page 10) 3-9. HOLDER ASSY (Page 11) 3-10. DC MOTOR (SLED) (M602) (Page 11) 3-11. DC MOTOR (OVER WRITE HEAD UP/ DOWN)(M603), DC SSM18B MOTOR (SPINDLE) (M601) (Page 12) SET7 MZ-NF520D Note: Follow the disassembly procedure in the numerical order given. 3-2. CASE (LOWER) 3-3. UPPER PANEL SECTION 1 two screws (M1.4) 2 two screws (M1.4) 3 Remove the case (lower) in the direction of the arrow. 5 torsion spring (pop up-L) 3 two step screws 2 Slide the open slider in the direction of the arrow, and open the upper panel section. set chassis assy torsion spring (pop up-L) 1 flexible board (CN872) 4 upper panel section