索尼 MZ-NH900_sm 电路图 维修手册.pdf

《索尼 MZ-NH900_sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《索尼 MZ-NH900_sm 电路图 维修手册.pdf（62页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL PORTABLE MINIDISC RECORDER MZ-NH900 Ver 1.1 2004.09 SPECIFICATIONS 9-879-121-02 2004I05-1 2004.09 Sony Corporation Personal Audio Company Published by Sony Engineering Corporation US and foreign patents licensed from Dolby Laboratories. Model Name Using Similar Mechanism NEW MD Mechan

2、ism Type MT-MZNH900-181 Optical Pick-up Name ABX-U US Model Canadian Model AEP Model UK Model E Model Australian Model Chinese Model Tourist Model SonicStage and SonicStage logo are trademarks or registered trademarks of Sony Corporation. MD Simple Burner, OpenMG, “Magic Gate”, “MagicGate Memory Sti

3、ck”, “Memory 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 register

4、ed 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 r

5、egistered trademarks of their respective holders. Inputs 1) MIC: stereo mini-jack (minimum input level 0.13 mV) Line in: stereo mini-jack for analog input (minimum input level 49 mV) optical (digital) mini-jack for optical (digital) input Outputs i/LINE OUT 2) : stereo mini-jack (dedicated remote co

6、ntrol jack)/194 mV (10 k ) Maximum output (DC) 2) Headphones: 3 mW + 3 mW (16 ) (European models) 5 mW + 5 mW (16 ) (Other models) Power requirements Sony AC Power Adaptor connected at the DC IN 3V jack: 120 V AC, 60 Hz (Models for USA, Canada, Mexico and Taiwan) 240 V AC, 50 Hz (Model for Australia

7、) 220 V AC, 50 Hz (Models for China and Argentine) 100 - 240 V AC, 50/60 Hz (Other models) The recorder: Nickel metal hydride rechargeable battery NH-10WM 1.2V 900 mAh (MIN) Ni-MH LR6 (size AA) alkaline battery Battery charging stand: AC power adaptor DC 3V Operating temperature +5 C (+41 F) to +35

8、C (+95 F) Dimensions Approx. 81.3 77.8 21.2 mm (w/h/d) (3 1 /4 3 1 /8 27 /32 in.) (excluding projecting parts and controls) Mass Approx. 110 g (3.9 oz) (the recorder only) Approx. 133 g (4.7 oz) (including the Supplied accessories AC power adaptor (1) Battery charging stand (1) Remote control (1) He

9、adphones (for USA model) (1) Earphones (except USA model) (1) Dedicated USB cable (1) NH-10WM Nickel metal hydride rechargeable battery (1) Dry battery case (1) Battery carrying case (1) Clamp filter (2) CD-ROM (SonicStage/MD Simple Burner) (1)* Optical cable (1) Carrying pouch (except USA model) (1

10、) *Do not play a CD-ROM on an audio CD player. rechargeable battery) 1) The LINE IN (OPT) jack is used to connect either a digital (optical) cable or a line (analog) cable. 2) The i/LINE OUT jack connects either headphones/earphones or a line cable. 3) Measured in accordance with JEITA. Design and s

11、pecifications are subject to change without notice. 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 su

12、rface on the optical pick-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.

13、in LP4 stereo Revolutions 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: AT R AC3plus (Ad

14、aptive TRansform Acoustic Coding 3 plus) MD: AT R AC AT R AC3 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 dBMZ-NH900 2 Notes on chip component replacement Never reu

15、se 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 C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3

16、 times). Be careful 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 O

17、R DOTTED LINE WITH 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 IDE

18、NTIFIS PAR UNE 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. When recording continuously in MD mode

19、(Unit: approx.hours)(JEITA) When playing continuously in Hi-MD mode (Unit: approx.hours)(JEITA) When playing continuously in MD mode (Unit: approx.hours)(JEITA) Battery life When recording continuously in Hi-MD mode (Unit: approx.hours)(JEITA 1) ) Disc type Batteries Linear PCM Hi-SP Hi-LP 1GB Hi-MD

20、 disc NH-10WM 2) 3.5 5 6 LR6 3) 2.5 3.5 4 NH-10WM + LR6 6 8.5 10 60/74/80-minute standard disc NH-10WM 3.5 5 6 LR6 4.5 7 8 NH-10WM + LR6 8 12 14 1) Measured in accordance with the JEITA (Japan Electronics and Information Technology Industries Association) standard. 2) When using a 100% fully charged

21、 nickel metal hydride rechargeable battery 3) When using a Sony LR6 (size AA) “STAMINA” alkaline dry battery (produced in Japan) Disc type BatteriesS P Stereo LP2 Stereo LP4 Stereo 60/74/80-minute standard disc NH-10WM 5.5 6.5 7.5 LR6 7 8.5 9.5 NH-10WM + LR6 12.5 15 17 Disc type Batteries Linear PCM

22、 Hi-SP Hi-LP 1GB Hi-MD disc NH-10WM 5 8.5 10 LR6 10 16 19 NH-10WM + LR6 15 24.5 29 60/74/80-minute standard disc NH-10WM 5 8.5 11 LR6 9 14.5 19 NH-10WM + LR6 14 23 30 Disc type Batteries SP Stereo LP2 Stereo LP4 Stereo 60/74/80-minute standard disc NH-10WM 91 0 . 51 2 LR6 18 21 24 NH-10WM + LR6 27 3

23、1.5 36 On power sources For use in your house: For the supplied battery charging stand, use the AC power adaptor supplied with this recorder. Do not use any other AC power adaptor since it may cause the recorder to malfunction. Polarity of the plugMZ-NH900 3 TABLE OF CONTENTS 1. SERVICING NOTES . 4

24、2. GENERAL . 5 3. DISASSEMBLY 3-1. Disassembly Flow . 7 3-2. Case (Lower) Block . 8 3-3. MAIN Board. 8 3-4. Upper Panel Block . 9 3-5. Mechanism Deck (MT-MZNH900-181) . 9 3-6. Battery Case Block . 10 3-7. Gear (BSA), Gear (SB) . 10 3-8. OP Service Assy . 11 3-9. DC Motor SSM18D/C-NP (Spindle) (M701)

25、, DC Motor (Sled) (M702), DC Motor Unit (Over Write Head Up/Down) (M703) . 11 3-10. Holder Assy . 12 3-11. Position of Ferrite Core . 12 4. TEST MODE . 13 5. ELECTRICAL ADJUSTMENTS . 17 6. DIAGRAMS 6-1. Block Diagram MD SERVO Section . 23 6-2. Block Diagram AUDIO Section . 24 6-3. Block Diagram POWE

26、R SUPPLY Section . 25 6-4. Schematic Diagram MAIN Section (1/9) . 27 6-5. Schematic Diagram MAIN Section (2/9) . 28 6-6. Schematic Diagram MAIN Section (3/9) . 29 6-7. Schematic Diagram MAIN Section (4/9) . 30 6-8. Schematic Diagram MAIN Section (5/9) . 31 6-9. Schematic Diagram MAIN Section (6/9) .

27、 32 6-10. Schematic Diagram MAIN Section (7/9) . 33 6-11. Schematic Diagram MAIN Section (8/9) . 34 6-12. Schematic Diagram MAIN Section (9/9) . 35 6-13. Printed Wiring Board MAIN Section (1/2) . 36 6-14. Printed Wiring Board MAIN Section (2/2) . 37 7. EXPLODED VIEWS 7-1. Case Section . 49 7-2. Uppe

28、r Panel Section . 50 7-3. Chassis Section . 51 7-4. Mechanism Deck Section (MT-MZNH900-181) . 52 6. ELECTRICAL PARTS LIST . 534 MZ-NH900 SECTION 1 SERVICING NOTES The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the cha

29、rged 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 EM

30、ISSION 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 emission, observe from more than 30 cm away from the objective lens. NOTES ON HANDLING THE OPTICA

31、L PICK-UP BLOCK OR BASE UNIT 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

32、the repaire completed. 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 lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to th

33、eir 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 ir

34、ons 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 viscou-s (sticky, less prone to flow) than ordinary solder so use caution not to

35、 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/MD Sim

36、ple 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 is an upgrade of the original manufacturer-installed operating system Multi-boot environment Mu

37、lti-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 suspen

38、d, 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

39、 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 (

40、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 hig

41、her, 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 Notes5 MZ-NH900 SECTION 2 GENERAL This section is extracted from instruction manual. T

42、he recorder A NAVI/ MENU button Press lightly to go to the NA VI (navigation) setting mode. Press for 2 seconds or more to go to MENU setting mode. B Battery compartment C Jog dial D 5-way control key E Terminals for attaching dry battery case F Terminal for attaching the battery charging stand G DC

43、 IN 3V jack H X (pause) button I x (stop) CANCEL/CHG button J GROUP button K zREC (record) switch 1 4 3 q; qa qs qd qf qh qj qk ql 2 5 6 7 qg 8 9 Operation Function Press NENT 1) play, enter Press towards . find the beginning of the previous track, rewind Press towards find the beginning of the next

44、 track, fast forward Press towards VOL + 1)or VOL . volume 1) There are tactile dots beside the NENT and VOL + buttons. L OPEN switch M Display window N T MARK button O USB cable connecting jack P LINE IN (OPT) jack Q MIC (PLUG IN POWER) jack There is a tactile dot beside the MIC (PLUG IN POWER) jack. R HOLD switch Slide the switch in the direction of the arrow to disable the buttons on the recorder. To prevent the buttons from being accidentally operated when you carry the recorder, use this function.