sony_MDS-NT1_service_manual 维修电路图.pdf

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1、SERVICE MANUAL MINIDISC DECK AEP Model UK Model E Model SPECIFICATIONS MDS-NT1 US and foreign patents licensed from Dolby Laboratories Licensing Corporation. Do not connect the supplied AC power adaptor to a switched AC outlet (e.g., on an amplifier). Use only the supplied AC power adaptor. Do not u

2、se any other AC power adaptor. Polarity of the plug SystemMiniDisc digital audio system DiscMiniDisc LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Revolutions (CLV)800 rpm to 1800 rpm Error correctionAdvanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency44.1 kHz

3、CodingAdaptive Transform Acoustic Coding (ATRAC)/ATRAC 3 Modulation systemEFM (Eight-to-Fourteen Modulation) Number of channels2 stereo channels Frequency response5 to 20,000 Hz 0.8 dB Signal-to-noise ratioOver 96 dB during playback Wow and flutterBelow measurable limit Outputs LINE (ANALOG) OUTJack

4、 type: stereo-mini Rated output: 1 Vrms (at 50 kilohms) Load impedance: Over 10 kilohms PHONESJack type: stereo-mini Rated output: 5 mW Load impedance: 32 ohms General USB portseries B, self powerd, full speed Where purchasedPower requirements* Europe and other countries220 230 V AC, 50/60 Hz *Using

5、 an AC power adaptor (supplied) Power consumption6 W Dimensions (approx.)152 52 249 mm (w/h/d) incl. projecting parts and controls Mass (approx.)1.0 kg Supplied accessories Design and specifications are subject to change without notice. AC power adaptor (1) USB cable (1) Audio connecting cord (stere

6、o mini-plug 1 y stereo mini-plug 1) (1) OpenMG Jukebox CD-ROM (1) Operating instructions for OpenMG Jukebox (1) Ver 1.0 2002.02 9-873-614-01Sony Corporation 2002B0500-1Home Audio Company C 2002.02Published by Sony Engineering Corporation Model Name Using Similar MechanismNEW MD Mechanism TypeMDM-7S2

7、B Optical Pick-up NameKMS-262E OpenMG, “MagicGate”, “MagicGate Memory Stick”, “Memory Stick”, VAIO, MusicClip, Net MD, and their logos are trademarks of Sony Corporation. “WALKMAN ” is a trademark of Sony Corporation. Microsoft, Windows, Windows NT and Windows Me- dia are trademarks or registered tr

8、ademarks of Microsoft Corporation in the United States and/or other countries. IBM and PC/AT are registered trademarks of Interna- tional 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 regis

9、tered trade- marks of Intel Corporation. All other trademarks are trademarks of their respec- tive owners.TM and marks are omitted in this manual. 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MDS-NT1 SELF-DIAGNOSIS FUNCTION The self-diagnosis function consists of error codes for customers which are displayed aut

10、omatically when errors occur, and error codes which show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the following box in the instruction manual. For details on how to check error codes during servicing, refer to the followin

11、g “Procedure for using the Self-Diagnosis Function (Error History Display Mode)”. PROCEDURE FOR USING THE SELF-DIAGNOSIS FUNCTION (ERROR HISTORY DISPLAY MODE) The decks self-diagnosis function automatically checks the condition of the MD deck when an error occurs, then indicates the nature of the er

12、ror through the two indicators. If the indicators light up or flash, find them in the following table and perform the indicated countermeasure. Should the problem persist, consult your nearest Sony dealer. Playback Indicator (green) Recording Indicator (red) Cause/Remedy FlashesThe recording was not

13、 made properly. (C13/Rec Error) , Set the deck in a stable surface, and repeat the recording procedure. FlashesThe inserted MD is dirty (with smudges, fingerprints, etc.), scratched, or substandard in quality. (C13/Rec Error) , Replace the disc and repeat the recording procedure. FlashesThe deck cou

14、ld not read the TOC on the MD properly. (C13/Read Error) , Take out the MD and insert it again. Lights upThe deck could not read the TOC on the MD properly. (C14/Toc Error) , Insert another disc. , If possible, erase all the tracks on the MD. Lights upLights upThere is an error in the internal data

15、that the deck needs in order to operate. (E0001/MEMORY NG) , Consult your nearest Sony dealer. FlashesFlashesThere is a problem with the optical pickup. (E0101/LASER NG) , Consult your nearest Sony dealer. Both indicators flash alternatelyAn MD loading problem has occurred. (E0201/LOADING NG) , Cons

16、ult your nearest Sony dealer. B/x/Z Note 1:The test mode and recording of this set are controlled by a personal computer, thus requiring the set to be connected to the PC. Prepare the personal computer in which necessary software is already installed. Attached software “OpenMG Jukebox” (necessary fo

17、r recording (check in, check out) (Part No. : 4-237-880-01) Software for test mode “TestMode_S.exe” (“TestMode_S.exe” and essential files “data_files.csv”, “Net MDUSB.dil” are distributed to- gether with the Service Manual. For the test mode, copy these three files in the same folder beforehand) Not

18、e 2:In the operation in the test mode, the operational description requiring “click xxx” means that you have to click the button on the screen. (“xxx” indicates the button name) Note 3:Perform the self-diagnosis function in the “error history display mode” in the test mode. The following describes t

19、he least required procedure. Be careful not to enter other modes by mistake. If you set other modes accidentally, click the MENU/NO to exit the mode. 1.Press the button and button until the NetMD indicator turns off (for more than 3 seconds). (During this step, the USB cable must be disconnected) 2.

20、Connect the set to the PC with the attached USB cable. 3.Start up the software for test mode. 4.Click the TEST MODE. 5.Click the JOG UP or JOG DOWN and when “Service” is displayed, click the ENTER/YES. 6.Click the JOG UP or JOG DOWN to display “Err Display”. 7.Click the ENTER/YES to sets the error h

21、istory mode and displays “op rec tm”. 8.Select the contents to be displayed or executed using the JOG UP or JOG DOWN. 9.Click the PUSH to display or execute the contents selected. 10. Click the PUSH another time returns to step 8. 11. Click the MENU/NO to display “Err Display” and release the error

22、history mode. 12. To release the test mode, quit the software for test mode after the REPEAT clicked. Note: When retrying this operation, start from step1. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MDS-NT1 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS Selecting the Test Mode DisplayDetails of History op rec

23、tmCumulative recording time is displayed. When cumulative recording time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, “Under 1 min” is displayed. The displayed time shows how long the laser is in high power state. It is about one fourth the actual recor

24、ding time. op play tmCumulative playing time is displayed. When cumulative playing time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, “Under 1 min” is displayed. spdl rp tmCumulative spindle motor running time is displayed. When cumulative spindle motor

25、run time is over 1 minute, the hour and minute are displayed as they are. When it is under 1 minute, “Under 1 min” is displayed. retry errDisplays the total number of retries during recording and number of retry errors during play. Displayed as “rss pss”. “r” indicates the retries during recording w

26、hile “p” indicates the retry errors during play. The number of retries and retry errors are displayed in hexadecimal digits from 00 to FF. total errDisplays the total number of errors. Displayed as “total ss”. The number of errors is displayed in hexadecimal digits from 00 to FF. err historyDisplays

27、 the 10 latest errors. Displayed as “0s ErrCd”. s indicates the history number. The smaller the number, the more recent is the error. (00 is the latest). indicates the error code. Refer to the following table for the details. The error history can be switched by clicking the JOG UP or JOG DOWN. retr

28、y adrsDisplays the past five retry addresses. Displays “ss ADRS ssss”, ss is the history number, ssss is the cluster with the retry error. Select the error history number using the JOG UP or JOG DOWN. er refreshMode to clear the error history and retry address history. Operating method 1) Click the

29、JOG UP or JOG DOWN when “er refresh” is displayed. 2) The display will change to “er refresh?”, and then click the ENTER/YES. The operation is over if “Complete!” is displayed. After this mode was executed, check the following: The data have been cleared. Perform the recording and playing to check t

30、hat the mechanism operates normally. tm refreshMode to clear the “op rec tm” and “op play tm” histories. These histories serve as approximate indications of when to replace the optical pick-up. If the optical pick-up has been replaced, perform this operation and clear the history. Operating method 1

31、) Click the JOG UP or JOG DOWN when “tm refresh” is displayed. 2) The display will change to “tm refresh?”, and then click the ENTER/YES. The operation is over if “Complete!” is displayed. After this mode was executed, check the following: The data have been cleared. Perform the recording and playin

32、g to check that the mechanism operates normally. op changeMode to clear cumulative time of “op rec tm” and “op play tm”. These historical data are used to determine the timing when the optical pick-up is to be replaced. When the optical pick-up was replaced, perform this operation to clear historica

33、l data. Operating method 1) Click the JOG UP or JOG DOWN when “op change” is displayed. 2) The display will change to “op chang?”, and then click the ENTER/YES. The operation is over if “Complete!” is displayed. spdl changeMode to clear cumulative time of “spdl rp tm”. This historical data is used t

34、o determine the timing when the spindle motor is to be replaced. When the spindle motor was replaced, perform this operation to clear historical data. Operating method 1) Click the JOG UP or JOG DOWN when “spdl change” is displayed. 2) The display will change to “spdl chang?”, and then click the ENT

35、ER/YES. The operation is over if “Complete!” is displayed. 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MDS-NT1 Error CodeDetails of Error 10Loading failed 12Loading switch combination is illegal 20Head of PTOC could not be read within the specified time 21Head of PTOC could be read but its content is erroneous

36、22Access to UTOC could not be made within the specified time 23UTOC could be not read within the specified 3time 24Content of UTOC is erroneous 30Playing could not start 31Content of sector is erroneous 40Cause of retry occurred during normal recording 41D-RAM overflowed and retry was executed 42Ret

37、ry was executed during the writing to TOC 43S.F editing was interrupted by retry 50Address could not be read except in access processing 51Focusing failed and it is out of control 60Unlock retry Table of Error Codes 5 MDS-NT1 SELF-DIAGNOSIS FUNCTION.2 1.SERVICING NOTES.7 2.GENERAL. 12 3.DISASSEMBLY

38、3-1.Disassembly Flow . 13 3-2.Case (Upper) . 14 3-3.Main Board. 15 3-4.MD Mechanism Deck (MDM-7S2B). 15 3-5.Front Panel Section . 16 3-6.BD Board, Over Write Head (HR901) . 16 3-7.Holder Assy . 17 3-8.Loading Motor Assy (M103) . 17 3-9.Sled Motor Assy (M102) . 18 3-10. Optical Pick-Up (KMS-262E) . 1

39、8 3-11. Spindle Motor Assy (M101) . 19 4.TEST MODE. 20 5.ELECTRICAL ADJUSTMENTS. 24 6.DIAGRAMS 6-1.Block Diagram SERVO Section . 36 6-2.Block Diagram MAIN Section . 37 6-3.Note for Printed Wiring Boards and Schematic Diagrams . 38 6-4.Printed Wiring Board BD Board . 39 6-5.Schematic Diagram BD Board

40、 (1/2) . 40 6-6.Schematic Diagram BD Board (2/2) . 41 6-7.Printed Wiring Board MAIN Board (Component Side) . 42 6-8.Printed Wiring Board MAIN Board (Conductor Side) . 43 6-9.Schematic Diagram MAIN Board (1/2) . 44 6-10. Schematic Diagram MAIN Board (2/2) . 45 6-11. Printed Wiring Board Panel Board .

41、 46 6-12. Schematic Diagram Panel Board . 47 6-13. IC Pin Function Description . 51 7.EXPLODED VIEWS 7-1.Case Section . 59 7-2.Front Panel Section . 60 7-3.Case (B) Section. 61 7-4.MD Mechanism Deck Section-1 (MDX-7S2B). 62 7-5.MD Mechanism Deck Section-2 (MDX-7S2B). 63 8.ELECTRICAL PARTS LIST. 64 T

42、ABLE OF CONTENTS 6 MDS-NT1 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 Never reuse a disconnected chip component. Notice that the minus side of a tantalum capac

43、itor may be dam- aged by heat. Flexible Circuit Board Repairing Keep 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 un

44、soldering. The laser component in this product is capable of emitting radiation exceeding the limit for Class 1. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the bottom exterior. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MA

45、RK 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. 7 MDS-NT1 SECTION 1 SERVICING NOTES The laser diode in the optical pick-up block may suffer electro- static