SONY MZ-NH1_sm 维修电路图.pdf

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1、SERVICE MANUAL PORTABLE MINIDISC RECORDER US Model AEP Model UK Model E Model Australian Model Chinese Model Tourist Model SPECIFICATIONS MZ-NH1 Audio playing system MiniDisc digital audio system Laser diode properties Material: GaAlAs Wavelength: = 790 nm Emission duration: continuous Laser output:

2、 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-up block with 7 mm aperture.) Recording and playback time (Refer to page 94 for details) When using HMD1G (1GB disc): Maximum 34 hours in Hi-LP stereo When using MDW-80 in Hi-MD mod

3、e: 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 350 rpm to 3,600 rpm (CLV) Error correction Hi-MD: LDC (Long Distance Code)/BIS (Burst Indicator Subcode) MD: ACIRC (Advanced Cross Interleave Reed So

4、lomon Code) Sampling frequency 44.1 kHz Sampling rate converter Input: 32 kHz/44.1 kHz/48 kHz Coding Hi-MD: Linear PCM (44.1 kHz/16 bit) PCM ATRAC3plus (Adaptive TRansform Acoustic Coding 3 plus) MD: ATRAC ATRAC3 LP2/LP4 Modulation system Hi-MD: 1-7RLL (Run Length Limited)/PRML (Partial Response Max

5、imum Likelihood) MD: EFM (Eight to Fourteen Modulation) Frequency response 20 to 20,000 Hz 3 dB Inputs1) 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 O

6、UT2): stereo mini-jack (dedicated emote control jack)/194 mV (10 k) Maximum output (DC)2) Headphones: 5 mW + 5 mW (16 ) Power requirements Sony AC Power Adaptor connected at the DC IN 6V jack: 120 V AC, 60 Hz (Models for USA, Canada, Mexico, and Taiwan) 240 V AC, 50 Hz (Model for Australia) 230 V AC

7、, 50 Hz (Models for U.K. and Hong Kong) 220 V AC, 50 Hz (Model for China) 100 - 240 V AC, 50/60 Hz (Other models) The recorder: Lithium-ion rechargeable battery LIP-4WM, 3.7 V, 370 mAh, Li-ion Battery charging stand: AC power adaptor DC 6V Operating temperature +5C (+41F) to +35C (+95F) Hi-MD mode (

8、When using a 60/74/80- minute standard disc) (Unit: approx.hours)(JEITA) Battery life4) Hi-MD mode (When using a 1GB Hi- MD disc) (Unit: approx.hours)(JEITA3) WhenLinear PCM Hi-SPHi-LP Recording continuously 68.59.5 Playing continuously 1015.518 WhenLinear PCM Hi-SPHi-LP Recording continuously 589 P

9、laying continuously 814.517.5 Ver 1.1 2004.09 US and foreign patents licensed from Dolby Laboratories. Model Name Using Similar MechanismNEW MD Mechanism TypeMT-MZNH1-181 Optical Pick-up NameABX-U 9-879-075-02 2004I05-1 2004.09 Sony Corporation Personal Audio Company Published by Sony Engineering Co

10、rporation Continued on next page SonicStage and SonicStage logo are trademarks or registered trademarks of Sony Corporation. MD Simple Burner, OpenMG, “MagicGate”, “MagicGate Memory Stick”, “Memory Stick”, Hi- MD, Net MD, ATRAC, ATRAC3, ATRAC3plus and their logos are trademarks of Sony Corporation.

11、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 t

12、he United States and/or other countries. Pentium is a trademark or registered trademark of Intel Corporation. All other trademarks and registered trademarks are trademarks or registered trademarks of their respective holders. 收音机爱好者资料库 Ra d i o Fa n s .CN For other Service and User Manuals, go to ww

13、w.ManualD 2 MZ-NH1 Dimensions Approx. 81.7 76.1 14.8 mm (w/h/d) (31/4 3 19/32 in.) (excluding projecting parts and controls) Mass Approx. 97 g (3.4 oz) (the recorder only) Approx. 107 g (3.8 oz) (including the rechargeable battery) 1)The LINE IN (OPT) jack is used to connect either a digital (optica

14、l) cable or a line (analog) cable. 2)The i/LINE OUT jack connects either headphones/earphones or a line cable. Design and specifications are subject to change without notice. Your dealer may not handle some of the above listed accessories. Please ask the dealer for detailed information about the acc

15、essories in your country. When using optional headphones, use only headphones/earphones with stereo mini plugs. You cannot use headphones/ earphones with micro plugs. 4)When using a 100% fully charged lithium-ion rechargeable battery 3)Measured in accordance with the JEITA (Japan Electronics and Inf

16、ormation Technology Industries Association) standard. On power sources Use house current or rechargeable battery. 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 recorde

17、r to malfunction. Polarity of the plug MD mode (Unit: approx.hours)(JEITA) WhenSP Stereo LP2 Stereo LP4 Stereo Recording continuously 81010.5 Playing continuously 14.51718.5 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MZ-NH1 TABLE OF CONTENTS 1.SERVICING NOTES.4 2.GENERAL.5 3.DISASSEMBLY 3-1.Disassembly Flow .7

18、 3-2.Bottom Panel Sub Assy .7 3-3.MAIN Board.8 3-4.Upper Panel Sub Assy .8 3-5.Control Ornament Block .9 3-6.Mechanism Deck Assy (MT-MZNH1-181) .9 3-7.Gear (SA), Gear (SB) . 10 3-8.Op Service Assy . 10 3-9.DC SSM18D/C-NP Motor (Spindle) (M701), DC SSM21A/C-NP Motor (Sled) (M702), DC Motor Unit (Over

19、 Write Head Up/Down) (M703) . 11 3-10. Holder Assy . 11 4.TEST MODE. 12 5.ELECTRICAL ADJUSTMENT. 16 6.DIAGRAMS 6-1.Block Diagram MD SERVO Section . 21 6-2.Block 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

20、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) . 29 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) .

21、 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.EXPLODED VIEWS 7-1.PANEL SECTION. 49 7-2.MAIN SECTION . 50 7-3.MECHANISM DECK SECTION. 51 8.ELECTRICAL PARTS LIST. 52 Notes on chip component re

22、placement 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 C during repairing. Do not touch the soldering iron on the same conductor of the circ

23、uit board (within 3 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 IDE

24、NTIFIED BY MARK 0 OR 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. 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MZ-NH1 The lase

25、r diode in the optical pick-up block may 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 whi

26、ch is included in the repair parts. The 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

27、, when checking the laser diode emission, observe from more than 30 cm away from the objective lens. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT SECTION 1 SERVICING NOTES MAIN Board (Conductor Side) SL894 (OPEN/CLOSE) Installing Providing the required system environment The following sy

28、stem 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 is an upgrade of the original

29、 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) sett

30、ings. 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 Compatible CPU: Pentium II 400 MHz or

31、 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

32、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 Professional/Windows Millennium Ed

33、ition/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 WMA files Notes UNLEADED SOLDER

34、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 characteristic

35、s. 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 p

36、attern (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 b

37、est to use only unleaded solder but unleaded solder may also be added to ordinary solder. OPERATION CHECK WHEN THE MAIN BOARD IS REMOVED 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

38、 check. Note: Be sure to remove the solder used for shortcircuit after the repaire completed. 5 MZ-NH1 SECTION 2 GENERAL This section is extracted from instruction manual. Looking at controls The recorder A x (stop) CANCEL button B Display window C OPEN switch D Battery compartment E 5-way control k

39、ey F MENU button G GROUP button H T MARK button I X (pause) button J zREC (record) switch/lamp K LINE IN (OPT) jack L MIC (PLUG IN POWER) jack There is a tactile dot beside the MIC (PLUG IN POWER) jack. M i (headphones/earphones)/LINE OUT jack N USB connecting jack 1 2 3 4 8 5 6 7 9 0 qa qs qd qf qg

40、 qh OperationFunction Press NENT 1) play, enter Press towards FR find the beginning of the previous track, rewind Press towards FF find the beginning of the next track, fast forward Press towards VOL +1) or VOL . volume 1)There are tactile dots beside the N ENT and VOL + buttons. O HOLD switch (at t

41、he rear) 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. P CHG (Charge) lamp The display window of the recorder A Disc indication Shows that the disc is rota

42、ting for recording or playing. B Battery indication Shows the approximate remaining battery power. If the rechargeable battery is weak, the indication becomes empty and starts flashing. C SYNC (synchro-recording) indication D REC indication Lights up during recording or file transfers from the compu

43、ter. When flashing, the recorder is in record standby mode. E Group indication F Hi-MD/MD indication “Hi-MD” lights up when the operation mode of the recorder is in Hi-MD mode and “MD” lights up when the operation mode is in MD mode. G Track number display H “R” (Remain) indication Lights up when re

44、maining recordable time is displayed. I Character information display Displays the menu items, date, error messages, etc. J Track mode (PCM, Hi-SP, Hi-LP, SP, LP2, LP4, MONO) indication K Level meter 1234 56789 qa0 6 MZ-NH1 The headphones/earphones with a remote control A Display window B Jog lever

45、(NX ENTER, ., ) C Clip D x (stop) CANCEL button E VOL +, buttons F HOLD switch Slide the switch in the direction of the arrow (a yellow mark appears) to disable the buttons on the remote control. To prevent the buttons from being accidentally operated when you carry the recorder, use this function.

46、G DISPLAY, BACKLIGHT button* H P-MODE, REPEAT button* I SOUND, SOUND SET button* J Jog dial (NAVI/MENU/ENTER)* * indicates a function that requires a slight press of the button. indicates a function that requires pressing the button for 2 seconds or more. 1 2 3 4 5 0 9 8 7 6 OperationFunction Press NX ENTER play