sony_mznh700_service_manual 维修电路图.pdf

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1、SERVICE MANUAL MD recorder Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 790 nm Emission duration: continuous Laser output: less than 44.6 W (This output is the value measured at a distance of 200 mm from the lens surface on the optical pick

2、-up block with 7 mm aperture.) Recording and playback time When using HMD1G (1GB disc): Maximum 34 hours in Hi-LP stereo When using MDW-80 in Hi-MD mode: Maximum 10 hours and 10 min. in Hi-LP stereo When using MDW-80 in MD mode: Maximum 160 min. in monaural Maximum 320 min. in LP4 stereo Revolutions

3、 350 rpm to 3,000 rpm (CLV) Error correction Hi-MD: LDC (Long Distance Code)/BIS (Burst Indicator Subcode) MD: ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Sampling rate converter Input: 32 kHz/44.1 kHz/48 kHz Coding Hi-MD: ATRAC3plus (Adaptive TRansform Acoustic C

4、oding 3 plus) MD: ATRAC ATRAC3 LP2/LP4 Modulation system Hi-MD: 1-7RLL (Run Length Limited)/PRML (Partial Response Maximum Likelihood) MD: EFM (Eight to Fourteen Modulation) Frequency response 20 to 20,000 Hz 3 dB Inputs MIC: stereo mini-jack (minimum input level 0.13 mV) LINE IN (OPT)1): stereo min

5、i-jack for analog input (minimum input level 49 mV) optical (digital) mini-jack for optical (digital) input Outputs i2): stereo mini-jack (dedicated remote control jack) Maximum output (DC) Headphones: 5 mW + 5 mW (24 ) (USA model) 3 mW + 3 mW (16 ) (European models) 5 mW + 5 mW (16 ) (Other models)

6、 Radio (MZ-NHF800) Frequency range USA model: FM: 87.5 - 108.0 MHz AM: 530 - 1,710 kHz (10 kHz step) 531 - 1,710 kHz (9 kHz step) TV: 2 - 13 CH WEATHER: 1 - 7 CH Canadian model: FM: 87.5 - 108.0 MHz AM: 530 - 1,710 kHz (10 kHz step) 531 - 1,710 kHz (9 kHz step) Models for Europe and China: FM: 87.5

7、- 108.0 MHz AM: 531 - 1,602 kHz Other models: FM: 87.5 - 108.0 MHz AM: 530 - 1,710 kHz Antenna FM/TV/WEATHER: Headphones/earphones cord antenna AM: Built-in ferrite bar antenna General Power requirements Sony AC Power Adaptor connected at the DC IN 3V jack: 120 V AC, 60 Hz (Models for USA, Canada, M

8、exico, and Taiwan) 230 V AC, 50/60 Hz (Models for continental Europe and Chile) 240 V AC, 50 Hz (Model for Australia) 230 V AC, 50 Hz (Models for U.K. and Hong Kong) 115 V/230 V AC, 50/60 Hz (Other models in MZ-NHF800) 100 - 240 V AC, 50/60 Hz (Other models in MZ-NH700) The recorder: Nickel metal hy

9、dride rechargeable battery NH-7WMAA 1.2V 700 mAh (MIN) Ni-MH LR6 (size AA) alkaline battery AC power adaptor DC 3V Operating temperature +5C (+41F) to +35C (+95F) Dimensions Approx. 81.0 29.2 78.9 mm (w/h/d) (31/4 113/16 31/8 in.) (excluding projecting parts and controls) Mass Approx. 103 g (3.7 oz)

10、 (the recorder only) Approx. 122 g (4.4 oz) (including the rechargeable battery) 1)The LINE 2)Measured in accordance with JEIAT. IN (OPT) jack is used to connect either a digital (optical) cable or a line (analog) cable. PORTABLE MINIDISC RECEIVER MZ-NH700/NHF800 Ver 1.1 2004.09 SPECIFICATIONS Conti

11、nued on next page 9-879-056-02 2004I05-1 2004.09 Sony Corporation Personal Audio Company Published by Sony Engineering Corporation US and foreign patents licensed from Dolby Laboratories Licensing Corporation. Model Name Using Similar MechanismNEW MD Mechanism TypeMT-MZNH900-181 Optical Pick-up Name

12、ABX-U US Model MZ-NHF800 Canadian Model AEP Model UK Model E Model Australian Model MZ-NH700/NHF800 Chinese Model Tourist Model MZ-NH700 SonicStage and SonicStage logo are trademarks or registered trademarks of Sony Corporation. MD Simple Burner, OpenMG, “Magic Gate”, “MagicGate Memory Stick”, “Memo

13、ry Stick”, Hi-MD, Net MD, ATRAC, 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 tradema

14、rks 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

15、trademarks of their respective holders. Photo: MZ-NHF800 收音机爱好者资料库 Ra d i o Fa n s .CN MZ-NH700/NHF800 2 Design and specifications are subject to change without notice. Supplied accessories AC power adaptor (1) Remote control (1) Headphones (for USA model) (1) Dedicated USB cable (1) Earphones (exce

16、pt USA model) (1) NH-7WMAA Nickel metal hydride rechargeable battery (1) CD-ROM (SonicStage/MD Simple Burner (1)* Battery carrying case (1) Hi-MD mode (When using a 60/74/80-minute standard disc) (Unit: approx.hours)(JEITA) Battery life When recording continuously Hi-MD mode (When using a 1GB Hi-MD

17、disc) (Unit: approx.hours)(JEITA3) 3)Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries Association) standard. BatteriesLinear PCM Hi-SPHi-LP NH-7WMAA 4) 4)When using a 100% fully charged nickel metal hydride rechargeable battery 34.55 LR65) 5)When using a

18、 Sony LR6 (size AA) “STAMINA” alkaline dry battery (produced in Japan) 2.53.54.5 BatteriesLinear PCM Hi-SPHi-LP NH-7WMAA2.54.55.5 LR6589.5 On power sources For use in your house: use the AC power adaptor supplied with this recorder. Do not use any other AC power adaptor since it may cause the record

19、er to malfunction. Polarity of the plug Clamp filter (2) Carrying pouch (except USA model) Optical cable (MZ-NH700) (except Canadian andMexican Models) (1) *Do not play a CD-ROM on an audio CD player. MD mode (Unit: approx.hours)(JEITA) When playing continuously Hi-MD mode (When using a 1GB Hi-MD di

20、sc) (Unit: approx.hours)(JEITA) Hi-MD mode (When using a 60/74/80-minute standard disc) (Unit: approx.hours)(JEITA) MD mode (Unit: approx.hours)(JEITA) When using the radio (MZ-NHF800) (Unit: approx.hours)(JEITA) BatteriesSP Stereo LP2 Stereo LP4 Stereo NH-7WMAA4.566.5 LR67.59.511 BatteriesLinear PC

21、M Hi-SPHi-LP NH-7WMAA4.57.59 LR61118.521.5 BatteriesLinear PCM Hi-SPHi-LP NH-7WMAA47.59 LR69.51720 BatteriesSP Stereo LP2 Stereo LP4 Stereo NH-7WMAA7.5910 LR620.52426 BatteriesFM/AMTV/Wb (weather)6) 6)USA model only. NH-7WMAA7.57 LR618.517 Notes on chip component replacement Never reuse a disconnect

22、ed 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 C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be car

23、eful not to apply force on the conductor when soldering or unsoldering. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE W

24、ITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE

25、MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. 收音机爱好者资料库 Ra d i o Fa n s .CN MZ-NH700/NHF800 3 TABLE

26、OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL Location of Controls.5 3.DISASSEMBLY 3-1.Disassembly Flow .6 3-2.Case (Lower) Section .7 3-3.MAIN Board.7 3-4.Case (Upper) Section.8 3-5.Mechanism Deck Section (MT-MZNH900-181), MD Standard Pin .8 3-6.Set Chassis Assy .9 3-7.Gear (BSA), Gear (SB) .9 3-8.Op S

27、ervice Assy . 10 3-9.DC Motor SSM18D/C-NP (Spindle) (M701), DC Motor (Sled) (M702), DC Motor Unit (Over Write Head Up/Down) (M703) . 10 3-10. Holder Assy . 11 3-11. Position of Ferrite Core . 11 4.TEST MODE. 12 5.ELECTRICAL ADJUSTMENTS. 16 6.DIAGRAMS 6-1.Block Diagram MD SERVO Section . 21 6-2.Block

28、 Diagram AUDIO Section . 22 6-3.Block Diagram POWER SUPPLY Section . 23 6-4.Schematic Diagram MAIN Section (1/9) . 25 6-5.Schematic Diagram MAIN Section (2/9) . 26 6-6.Schematic Diagram MAIN Section (3/9) . 27 6-7.Schematic Diagram MAIN Section (4/9) . 28 6-8.Schematic Diagram MAIN Section (5/9) . 2

29、9 6-9.Schematic Diagram MAIN Section (6/9) . 30 6-10. Schematic Diagram MAIN Section (7/9) . 31 6-11. Schematic Diagram MAIN Section (8/9) . 32 6-12. Schematic Diagram MAIN Section (9/9) . 33 6-13. Printed Wiring Board MAIN Section (1/2) . 34 6-14. Printed Wiring Board MAIN Section (2/2) . 35 7.EXPL

30、ODED VIEWS 7-1.Case (Lower) Section . 47 7-2.Case (Upper) Section. 48 7-3.Chassis Section. 49 7-4.Mechanism Deck Section (MT-MZNH900-181) . 50 6.ELECTRICAL PARTS LIST. 51 Ver 1.1 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MZ-NH700/NHF800 SECTION 1 SERVICING NOTES The laser diode in the optical pick-up block ma

31、y suffer electrostatic 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

32、 flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick- up block. Therefore, when checking the laser diode emissio

33、n, observe from more than 30 cm away from the objective lens. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT SL894 (OPEN/CLOSE) MAIN Board (Conductor Side) UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no le

34、ad. (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

35、 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

36、 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 syste

37、m environment The following system environment is required in order to use the SonicStage/MD Simple Burner software for the MD 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

38、 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 wi

39、th 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 ComputerIBM PC/AT or Compati

40、ble 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 m

41、ore is recommended) Others CD drive (capable of digital playback by WDM) Sound Board USB port (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 Prof

42、essional/Windows Millennium Edition/Windows 98 Second Edition DisplayHigh 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 WM

43、A files Notes OPERATION CHECK WHEN THE LID IS OPEN In making an operation check with the MAIN Board removed from the set, short the SL894 (OPEN/CLOSE) of the MAIN Board with the solder before starting the operation check. Note: Be sure to remove the solder used for shortcircuit after the repaire com

44、pleted. 5 MZ-NH700/NHF800 SECTION 2 GENERAL This section is extracted from instruction manual. Looking at controls The recorder A Display window B T MARK/REC (+N) button C Jog dial D 5-way control key E DC IN 3V jack F X (pause) button G x (stop) CANCEL/CHG button H OPEN switch I GROUP button J NAVI

45、/MENU button Press lightly to go to the NAVI (navigation) setting mode. Press for 2 seconds or more to go to MENU setting mode. K USB cable connecting jack 1 4 3 qs qd qf qg 2 5 6 7 qa 9 8 q; OperationFunction Press NENT 1)play, enter Press towards . find the beginning of the previous track, rewind Press towards find the beginning of the next track, fast forward Press towards VOL +1) or VOL . volume 1)There are tactile dots beside the NENT and VOL + buttons. L LINE