sony_MXD-D4_service_manual 维修电路图.pdf

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1、SERVICE MANUAL CD player section SystemCompact Disc digital audio system LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Laser outputLess than 44.6 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

2、 aperture. Frequency response5 to 20,000 Hz 0.5 dB Signal-to-noise ratioMore than 98 dB Wow and flutterBelow measurable limit MD deck section SystemMiniDisc digital audio system DiscMiniDisc LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Laser outputLess than 44.6 W* * This outpu

3、t 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. Laser diode properties Material: GaAlAs Revolutions (CLV)800 rpm to 1,800 rpm Error correctionAdvanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency44.1 kH

4、z CodingAdaptive TRansform Acoustic Coding (ATRAC)/ATRAC 3 Modulation systemEFM (Eight-to-Fourteen Modulation) Number of channels2 stereo channels Frequency response5 to 20,000 Hz 0.5 dB Signal-to-noise ratioOver 96 dB during playback Wow and flutterBelow measurable limit Inputs Jack type Input impe

5、dance Rated input Minimum input ANALOG IN Phono jacks 47 kilohms500 mVrms 125 mVrms DIGITAL OPTICAL IN Square optical connector jack Optical wave length: 660 nm Outputs Jack typeRated outputLoad impedance PHONES Stereo phone jack 10 mW32 ohms ANALOG OUT Phono jacks2 Vrms (at 50 kilohms) Over 10 kilo

6、hms COMPACT DISC MINIDISC DECK US Model Canadian Model AEP Model UK Model E Model SPECIFICATIONS MXD-D4 Continued on next page U.S. and foreign patents licensed form Dolby Laboratories Licensing Corporation. Model Name Using Similar MechanismMXD-D5C MD Mechanism TypeMDM-7X2A Optical Pick-up NameKMS-

7、262A/J1N Model Name Using Similar MechanismNEW CD Mechanism TypeCDM55B-21BD53 Base Unit NameBU-21BD53 Optical Pick-up NameOP Assy (A-MAX.2) MD Section CD Section Photo: Black type 收音机爱好者资料库 Ra d i o Fa n s .CN 2 SELF-DIAGNOSIS FUNCTION The self-diagnosis function consists of error codes for customer

8、s which are displayed automatically 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 servici

9、ng, refer to the following “Procedure for using the Self-Diagnosis Function (Error History Display Mode)”. PROCEDURE FOR USING THE SELF-DIAGNOSIS FUNCTION (ERROR HISTORY DISPLAY MODE) Note: Perform the self-diagnosis function in the “error history display mode” in the test mode. The following descri

10、bes the least required procedure. Be careful not to enter other modes by mistake. If you set other modes accidentally, press the MENU/NO button to exit the mode. 1.Press thex(CD),x(MD) and YES buttons at the same time. 2.Press the AMS (MD) knob andx(MD) button to display “ 0”. 3.Turn the AMS (MD) kn

11、ob and when “ 5” is displayed, press the AMS (MD) knob. 4.Turn the AMS (MD) knob and when “Service” is displayed, press the YES button. 5.Turn the AMS (MD) knob to display “Err Display”. 6.Press the YES button to sets the error history mode and displays “op rec tm”. 7.Select the contents to be displ

12、ayed or executed using the AMS (MD) knob. 8.Press the AMS (MD) knob to display or execute the contents selected. 9.Press the AMS (MD) knob another time returns to step 6. 10. Press the MENU/NO button to display “Err Display” and release the error history mode. 11. To release the test mode, press the

13、?/1button to display “ 5”. 12. To turn the power OFF, turn the AMS (MD) knob and when “ 8” displayed, press the AMS (MD) knob. lL lL lL lL lL lL lL lL lLlL General Power requirements Where purchasedPower requirements U.S.A. and Canada120 V AC, 60 Hz Europe220 - 230 V AC, 50/60 Hz Certain countries i

14、n Asia220 - 240 V AC, 50/60 Hz Other countries110 - 120 or 220 - 240 V AC selectable, 50/60 Hz Power consumption22 W (less than 1 W at standby) Dimensions (approx.) (w/h/d) incl. projecting parts and controls 430 120 290 mm Mass (approx.)4.7 kg Supplied accessories Design and specifications are subj

15、ect to change without notice. Audio connecting cords (2) Remote commander (remote) (1) Sony R6 (size-AA) batteries (2) Power plug adaptor (1) (Singaporian model only) Self-Diagnosis Function The deck has a self-diagnosis display. This function shows a three- or five-digit display (a combination of a

16、 letter and figures) and the corresponding message, so you can check the decks condition. If such a display appears, check the following table in order to resolve the problem. Should any problem persist, consult your nearest Sony dealer. Three- or five-digit display/MessageCause/Remedy C11/Protected

17、The inserted MD is record-protected. , Take out the MD, and close the record-protect tab. C13/REC ErrorThe recording was not made properly. , Set the deck in a stable place, and repeat the recording procedure. The inserted MD is dirty (with smudges, fingerprints, etc.), scratched, or not up to stand

18、ards. , Replace the disc, and repeat the recording procedure. C14/TOC ErrorThe deck could not read the TOC of the MD properly. , Insert another disc. , If possible, erase all tracks on the MD using the All Erase Function. While recording from a digital component connected through the DIGITAL OPTICAL

19、 IN connector, the digital connecting cable was unplugged or the digital component turned off. , Connect the cable or turn the digital component back on. C12/Cannot CopyAn attempt was made to play a disc that is not compatible with this deck (CD- ROM, MD data disc, etc.). , Replace the disc. C13/Rea

20、d ErrorThe deck could not read the TOC of the MD properly. , Eject the disc, then insert it again. C41/Cannot CopyThe digitally dubbed material cannot be recorded digitally. C71/Din UnlockA moments lighting is due to the signals of the digital program being recorded. This does not affect the recorde

21、d material. E0001/MEMORY NGThere is an error in the internal data that the deck needs in order to operate. , Consult your nearest Sony dealer. E0101/LASER NGThere ia a problem with the optical pick-up. , The optical pick-up may have failed. Consult your nearest Sony dealer. 收音机爱好者资料库 Ra d i o Fa n s

22、 .CN 3 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS Selecting the Test Mode DisplayDetails of History op rec 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 display

23、ed. The displayed time shows how long the laser is in high power state. It is about one fourth the actual recording 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

24、min” is displayed. spdl rp tmCumulative spindle motor running time is displayed. When cumulative spindle motor 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 recordi

25、ng and number of retry errors during play. Displayed as “rss pss”. “r” indicates the retries during recording while “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. Disp

26、layed as “total ss”. The number of errors is displayed in hexadecimal digits from 00 to FF. err historyDisplays 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

27、the following table for the details. The error history can be switched by turning the AMS (MD) knob. retry 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 AMS knob. er r

28、efreshMode to clear the error history and retry address history. Operating method 1) Press AMS (MD) knob when “er refresh” is displayed. 2) The display will change to “er refresh?”, and then press YES button. The operation is over if “Complete!” is displayed. After this mode was executed, check the

29、following: The data have been cleared. Perform the recording and playing to check that 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

30、has been replaced, perform this operation and clear the history. Operating method 1) Press AMS (MD) knob when “tm refresh” is displayed. 2) The display will change to “tm refresh?”, and then press YES button. The operation is over if “Complete!” is displayed. After this mode was executed, check the

31、following: The data have been cleared. Perform the recording and playing 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

32、optical pick-up was replaced, perform this operation to clear historical data. Operating method 1) Press AMS (MD) knob when “op change” is displayed. 2) The display will change to “op chang?”, and then press YES button. The operation is over if “Complete!” is displayed. spdl changeMode to clear cumu

33、lative time of “spdl rp tm”. This historical data is used to 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) Press AMS (MD) knob when “spdl change” is displayed. 2) The display wi

34、ll change to “spdl chang?”, and then press YES button. The operation is over if “Complete!” is displayed. lL lL lL lL lL lL 收音机爱好者资料库 Ra d i o Fa n s .CN 4 TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION.2 1.SERVICING NOTES.6 2.GENERAL. 16 3.DISASSEMBLY. 17 4.TEST MODE. 26 5.ELECTRICAL ADJUSTMENTS MD Sect

35、ion . 32 CD Section . 43 6.DIAGRAMS 6-1.Block Diagram MD SERVO Section . 45 6-2.Block Diagram MAIN Section . 46 6-3.Block Diagram DISPLAY/POWER SUPPLY Section . 47 6-4.Note for Printed Wiring Boards and Schematic Diagrams . 48 6-5.Printed Wiring Board BD (CD) Board . 50 6-6.Schematic Diagram BD (CD)

36、 Board . 51 6-7.Schematic Diagram BD (MD) Board (1/2) . 52 6-8.Schematic Diagram BD (MD) Board (2/2) . 53 6-9.Printed Wiring Board BD (MD) Board . 54 6-10. Printed Wiring Board MAIN Board (Component Side) . 56 6-11. Printed Wiring Boards MAIN (Conductor Side)/LOADING Boards . 57 6-12. Schematic Diag

37、ram MAIN Board (1/4) . 58 6-13. Schematic Diagram MAIN (2/4)/LOADING Boards . 59 6-14. Schematic Diagram MAIN Board (3/4) . 60 6-15. Schematic Diagram MAIN Board (4/4) . 61 6-16. Printed Wiring Boards DISPLAY/LP LED/PW SW Boards . 62 6-17. Schematic Diagram DISPLAY/LP LED/PW SW Boards . 63 6-18. Pri

38、nted Wiring Board TRANS Board (Except Singapore) . 64 6-19. Schematic Diagram TRANS Board (Except Singapore) . 65 6-20. Printed Wiring Boards TRANS/LF Boards (Singapore) . 66 6-21. Schematic Diagram TRANS/LF Boards (Singapore) . 67 6-22. Printed Wiring Board HP Board . 68 6-23. Schematic Diagram HP

39、Board . 68 6-24. IC Pin Function Description . 70 7.EXPLODED VIEWS. 80 8.ELECTRICAL PARTS LIST. 86 ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLA

40、CER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. R

41、EPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. 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

42、 but its content is erroneous 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 overflowe

43、d and retry was executed 42Retry 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 SAFETY CHECK-OUT After correcting the original servi

44、ce problem, perform the follow- ing safety check before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE TEST The AC leakage from any exposed metal part

45、to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes.). Leakage current can be measured by any one of three methods. 1.A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2.A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3.Measuring the voltage drop across a resistor by