sony_MXD-D5C_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 96 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 propertiesMaterial: GaAlAs Revolutions (CLV)800 rpm to 1,800 rpm Error correctionAdvanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency44.1 kHz

4、 CodingAdaptive Transform Acoustic Coding (ATRAC)/ATRAC 3 Frequency response5 to 20,000 Hz 0.5 dB Signal-to-noise ratioOver 96 dB during playback Wow and flutterBelow measurable limit Inputs Jack typeInput impedance Rated input Minimum input ANALOG IN Phono jacks 47 kilohms500 mVrms 125 mVrms DIGITA

5、L 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 kilohms Modulation systemEFM (Eight-to-Fourteen Modulation) Number of channels2 stereo channel

6、s COMPACT DISC MINIDISC DECK US Model Canadian Model AEP Model UK Model SPECIFICATIONS MXD-D5C Continued on next page U.S. and foreign patents licensed form Dolby Laboratories Licensing Corporation. Model Name Using Similar MechanismNEW CD Mechanism TypeCDM53G-21BD53 Base Unit NameBU-21BD53 Optical

7、Pick-up NameOP Assy (A-MAX.2) Model Name Using Similar MechanismNEW MD Mechanism TypeMDM-7X2A Optical Pick-up NameKMS-262A/J1N CD Section MD Section Photo: AEP, UK models 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 customers which a

8、re 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 servicing, refer

9、 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 describes the l

10、east 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 “ To Normal”. 3.Turn the AMS (MD) kno

11、b and when “ MD Test” 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

12、displayed 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, pres

13、s theI/1button to display “ MD Test”. 12. To turn the power OFF, turn the AMS (MD) knob and when “ Initial” displayed, press the AMS (MD) knob. lL lL lL lL General Power requirements Where purchasedPower requirements U.S.A. and Canada120 V AC, 60 Hz Europe220 - 230 V AC, 50/60 Hz Power consumption25

14、 W (less than 1 W at standby) Dimensions (approx.) (w/h/d) incl. projecting parts and controls 430 120 395 mm Mass (approx.)6.5 kg Supplied accessories Design and specifications are subject to change without notice. Audio connecting cords (2) Remote commander (remote) (1) Sony R6 (size-AA) batteries

15、 (2) Self-Diagnosis Function The deck has a self-diagnosis display. This function shows a three- or five-digit display (a combination of a 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

16、 the problem. Should any problem persist, consult your nearest Sony dealer. Three-digit display/Message Cause/Remedy C11/ProtectedThe 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 pla

17、ce, and repeat the recording procedure. The inserted MD is dirty (with smudges, fingerprints, etc.), scratched, or not up to standards. , 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

18、 all tracks on the MD using the All Erase Function. While recording from a digital component connected through the DIGITAL OPTICAL 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 CopyA

19、n attempt was made to play a disc that is not compatible with this deck (CD- ROM, MD data disc, etc.). , Replace the disc. C13/Read 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 digital

20、ly. C71/Din UnlockA moments lighting is due to the signals of the digital program being recorded. This does not affect the recorded 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 pr

21、oblem with the optical pick-up. , The optical pick-up may have failed. Consult your nearest Sony dealer. lL lL lL lL lLlL 收音机爱好者资料库 Ra d i o Fa n s .CN 3 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS Selecting the Test Mode DisplayDetails of History op rec tmCumulative recording time is displayed.

22、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 recording time. op play tmCumulative playing ti

23、me 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 run time is over 1 minute, the hour and mi

24、nute 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 while “p” indicates the retry errors during

25、 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 the 10 latest errors. Displayed as “0s Er

26、rCd”. 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 turning the AMS (MD) knob. retry adrsDisplay the past five retry addresses. Dis

27、plays “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 refreshMode to clear the error history and retry address history. Operating method 1) Press AMS (MD) knob when “er refresh” is displayed. 2) The display wi

28、ll change to “er refresh?”, and then press YES button. 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 that the mechanism operates normally. op changeMode to clear cumulative

29、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 historical data. Operating method 1) Press AMS (MD) knob when “op change” is displayed. 2) T

30、he display will change to “op change?”, and then press YES button. The operation is over if “Complete!” is displayed. spdl changeMode to clear cumulative 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 re

31、placed, perform this operation to clear historical data. Operating method 1) Press AMS (MD) knob when “spdl change” is displayed. 2) The display will change to “spdl change?”, and then press YES button. The operation is over if “Complete!” is displayed. lL lL lL lL lL 收音机爱好者资料库 Ra d i o Fa n s .CN 4

32、 TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION.2 1.SERVICING NOTES.6 2.GENERAL. 16 3.DISASSEMBLY. 17 4.ASSEMBLY .26 5.TEST MODE. 29 6.ELECTRICAL ADJUSTMENTS MD Section . 35 CD Section . 46 7.DIAGRAMS 7-1.Block Diagram MD SERVO Section . 48 7-2.Block Diagram MAIN Section . 49 7-3.Block Diagram DISPLAY/PO

33、WER SUPPLY Section . 50 7-4.Note for Printed Wiring Boards and Schematic Diagrams . 51 7-5.Printed Wiring Board BD (CD) Board . 52 7-6.Schematic Diagram BD (CD) Board . 53 7-7.Schematic Diagram BD (MD) Board (1/2) . 54 7-8.Schematic Diagram BD (MD) Board (2/2) . 55 7-9.Printed Wiring Board BD (MD) B

34、oard . 56 7-10. Printed Wiring Board MAIN Board (Component Side) . 58 7-11. Printed Wiring Board MAIN Board (Conductor Side) . 59 7-12. Schematic Diagram MAIN Board (1/4) . 60 7-13. Schematic Diagram MAIN Board (2/4) . 61 7-14. Schematic Diagram MAIN Board (3/4) . 62 7-15. Schematic Diagram MAIN Boa

35、rd (4/4) . 63 7-16. Printed Wiring Board AUDIO Board (Component Side) . 64 7-17. Printed Wiring Board AUDIO Board (Conductor Side) . 65 7-18. Schematic Diagram AUDIO Board . 66 7-19. Printed Wiring Boards CDM Section . 68 7-20. Schematic Diagram CDM Section . 69 7-21. Printed Wiring Boards PANEL Sec

36、tion . 70 7-22. Schematic Diagram PANEL Section . 71 7-23. Printed Wiring Board LED Board . 72 7-24. Schematic Diagram LED Board . 73 7-25. IC Pin Function Description . 77 8.EXPLODED VIEWS. 89 9.ELECTRICAL PARTS LIST. 96 ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR U

37、NE 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. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTI

38、FIED 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 PUB- LISHED BY SONY. Error CodeDetails of Error 10Loading failed 12Lo

39、ading 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 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 30P

40、laying could not start 31Content of sector is erroneous 40Cause of retry occurred during normal recording 41D-RAM overflowed 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

41、 failed and it is out of control 60Unlock retry Table of Error Codes 5 SAFETY CHECK-OUT After correcting the original service 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 exp

42、osed metal parts for AC leakage. Check leakage as described below. LEAKAGE TEST The AC leakage from any exposed metal part 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 measure

43、d 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

44、 across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indica- tion is 0.75 V, so analog meters must have an accurate low- voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex- amples of a passive VOM that is suitable. Nearly all battery operated digital multimeters t

45、hat have a 2 V AC range are suitable. (See Fig. A) Fig. A.Using an AC voltmeter to check AC leakage. 1.5 k0.15 F AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier kasseres i henhold til fabrikantens instruksjoner. VARNING Explosionsfara vid felaktigt batteribyte. Anvn