sony_MDS-JA333ES_service_manual 维修电路图.pdf

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1、SERVICE MANUAL MINIDISC DECK Continued on next page SPECIFICATIONS US Model Canadian Model AEP Model UK Model Model Name Using Similar MechanismMDS-JA555ES MD Mechanism TypeMDM-6J Base Unit TypeMBU-5J Optical Pick-up TypeKMS-260B/J1N MDS-JA333ES U.S. and foreign patents licensed from Dolby Laborator

2、ies Licensing Corporation. Photo : GOLD SystemMiniDisc digital audio system DiscMiniDisc LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Laser outputMAX 44.6 W1) 1) This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Blo

3、ck with 7 mm aperture. Laser diodeMaterial: GaAlAs Revolutions (CLV)400 rpm to 900 rpm Error correctionACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency44.1 kHz CodingATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3 Modulation systemEFM (Eight-to-Fourteen Modulation) Number of

4、 channels2 stereo channels Frequency response5 to 20,000 Hz 0.3 dB Signal-to-noise ratioOver 100 dB during play Wow and flutterBelow measurable limit Inputs ANALOG INJack type: phono Impedance: 47 k Rated input: 500 mVrms Minimum input: 125 mVrms DIGITAL IN OPT1Connector type: square optical Impedan

5、ce: 660 nm (optical wave length) DIGITAL IN OPT2Connector type: square optical Impedance: 660 nm (optical wave length) DIGITAL IN COAXIALJack type: phono Impedance: 75 Rated input: 0.5 Vp-p, 20 % Outputs PHONESJack type: stereo phone Rated output: 28 mW Load impedance: 32 ANALOG OUTJack type: phono

6、Rated output: 2.5 Vrms (at 50 k ) Load impedance: over 10 k 收音机爱好者资料库 Ra d i o Fa n s .CN 2 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. REPLACE THESE COMPONENTS WITH SONY

7、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 IDENTIFS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES

8、 COMPOSANTS QUE PAR DES PISES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPMENTS PUBLIS PAR SONY. After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs

9、, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE 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 c

10、urrent 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.Measu

11、ring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery operated digit

12、al multimeters that have a 2V AC range are suitable. (See Fig. A) SAFETY CHECK-OUT To Exposed Metal Parts on Set 0.15 F 1.5 k AC Voltmeter (0.75 V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the sa

13、me or equivalent type recommended by the equipment manufacturer. Discard used batteries according to manufactures instructions. ADVARSEL! Lithiumbatteri - Eksplosionsfare ved fejlagtig hndtering. Udskiftning m kun ske med batteri af samme fabrikat og type. Levr det brugte batteri tilbage til leveran

14、dren. ADVARSEL Eksplosjonsfare ved feilakting skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier katterier kasseres i henhold til fabrikantens VARNIG Explosionsfara vid felaktigt batteribyte. Anvnd samma batterityp eller en likvrdig

15、 typ som rekommenderas av apparattillverkaren. Kassera anvnt batteri enligt gllande freakrifter. VAROITUS Parist voi rjht, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hvit kytetty paristo valmistajan ohjeiden mukaisesti. DIGITAL OUT OPTICAL

16、 Connector type: square optical Rated output: 18 dBm Load impedance: 660 nm (optical wave length) DIGITAL OUT COAXIAL Jack type: phono Rated output: 0.5 Vp-p (at 75 ) Load impedance: 75 General Power requirements Where purchasedPower requirements US, Canadian120 V AC, 60 Hz AEP, UK230 V AC, 50/60 Hz

17、 Power consumption20 W Dimensions (approx.)430 123.5 375.5 mm (17 4 7/8 14 7/8 in.) (w/h/d) incl. projecting parts and controls Mass (approx.)10.5 kg (23 lbs 15 oz) Supplied accessories Audio connecting cords (2) Optical cable (1) Remote commander (remote) (1) R6 (size-AA) batteries (2) Design and s

18、pecifications are subject to change without notice. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. The following caution label is located inside the unit. Laser component in this product is c

19、apable of emitting radiation exceeding the limit for Class 1. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. Notes on chip component replacement Never reuse a disconnected chip component. Notice that t

20、he minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing Keep the temperature of soldering iron around 270C during 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 conduc

21、tor when soldering or unsoldering. MODEL IDENTIFICATION BACK PANEL Parts No. 4-228-930-1 : AEP, UK model 4-228-930-2 : US model 4-228-930-3 : Canadian model TABLE OF CONTENTS 1. SERVICING NOTE 6 2. GENERAL 12 3. DISAssembly 3-1.Case 16 3-2.Loading Panel16 3-3.Front Panel Assembly17 3-4.MD Mechanism

22、Deck 17 3-5.Tray Assembly18 3-6.BU Holder Assembly 19 3-7.Motor (Loading) Assembly (M10) 19 3-8.Base Unit (MBU-5J) 20 3-9.BD Board20 3-10. Over Light Head (HR901)21 3-11. Mini Disc Device (KMS-260B/J1N)21 4. TEST MODE 22 5. ELECTRICAL ADJUSTMENTS27 6. DIAGRAMS 6-1.Block Diagrams 37 Main Section 37 D

23、isplay/Power Supply Section 38 6-2.Circuit Board Location 39 6-3.Printed Wiring Board BD Section 40 6-4.Schematic Diagram BD Section (1/2) 41 6-5.Schematic Diagram BD Section (2/2) 42 6-6.Schematic Diagram BD Switch Section43 6-7.Printed Wiring Board BD Switch Section 43 6-8.Printed Wiring Board AD

24、Section 44 6-9.Schematic Diagram AD Section45 6-10. Printed Wiring Board DIO Section 46 6-11. Schematic Diagram DIO Section 47 6-12. Printed Wiring Board DA Section 48 6-13. Schematic Diagram DA Section49 6-14. Printed Wiring Board DIGITAL Section50 6-15. Schematic Diagram DIGITAL Section 51 6-16. S

25、chematic Diagram HP Section 52 6-17. Printed Wiring Board HP Section 53 6-18. Schematic Diagram POWER Section 54 6-19. Printed Wiring Board POWER Section55 6-20. Printed Wiring Board PANEL Section 56 6-21. Schematic Diagram PANEL Section57 6-22. Printed Wiring Board AC Section 58 6-23. Schematic Dia

26、gram AC Section 59 6-22. IC Block Diagrams61 6-23. IC PinFunction Description66 7. EXPLODED VIEWS 7-1.Upper Case Assembly 73 7-2.Front Panel Assembly74 7-3.Chassis Assembly 75 7-4.Mechanism Deck Assembly-1 (MDM-6J) 76 7-5.Mechanism Deck Assembly-2 (MDM-6J) 77 7-6.Base Unit (MBU-5J) 78 8. ELECTRICAL

27、PARTS LIST79 收音机爱好者资料库 Ra d i o Fa n s .CN 4 SELF-DIAGNOSIS FUNCTION The self-diagnosis function consists of error codes for customers 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

28、 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 following “Procedure for using the Self- Diagnosis Function (Error History Display Mode)”. The decks self-diagnosis function automatically checks the

29、condition of the MD deck when an error occurs, then issues a three- or five-digit code and an error message on the display. If the code and message alternate, find them in the following table and perform the indicated countermeasure. Should the problem persist, consult your nearest Sony dealer. PROC

30、EDURE 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 least required procedure. Be careful not to enter other modes by mistake. If you set other modes acciden

31、tally, press the MENU/NO button to exit the mode. 1.While pressing the l AMS L knob and x button, connect the power plug to the outlet, and release the l AMS L knob and x button. When the test mode is set “Check” is displayed. 2.Turn the l AMS L knob and when “Service” is displayed, press the YES bu

32、tton. 3.Turn the l AMS L knob to display “Err Display”. 4.Press the YES button to sets the error history mode and displays “op rec tm”. 5.Select the contents to be displayed or executed using the l AMS L knob. 6.Press the l AMS L knob to display or execute the contents selected. 7.Press the l AMS L

33、knob another time to return to step 4. 8.Press the MENU/NO button to display “Err Display” and release the error history mode. 9.To release the test mode, press the REPEAT button. The unit sets into the STANDBY state and the test mode ends. Three- or five- digit code/ Message Cause/Remedy C11/Protec

34、ted The inserted MD is record-protected. ?Take out the MD and close the record- protect slot. C12/Cannot Copy You tried to record a CD with a format that the external device connected to the deck does not support, such as CD-ROM or video CD. ?Remove the disc and insert a music CD. C13/REC Error The

35、recording was not made properly. ?Set the deck in a stable surface, and repeat the recording procedure. The inserted MD is dirty (with smudges, fingerprints, etc.), scratched, or substandard in quality. ?Replace the disc and repeat the recording procedure. C13/Read Error The deck could not read the

36、TOC on the MD properly. ?Take out the MD and insert it again. C14/Toc Error The deck could not read the TOC on the MD properly. ?Insert another disc. ?If possible, erase all the tracks on the MD. C41/Cannot Copy The sound source is a copy of commercially available music software, or you tried to rec

37、ord a CD-R (Recordable CD). ?The Serial Copy Management System prevents making a digital copy. You cannot record a CD-R. C71/Din Unlock The sporadic appearance of this message is caused by the digital signal being recorded. This will not affect the recording. While recording from a digital component

38、 connected through the DIGITAL IN connector, the digital connecting cable was unplugged or the digital component turned off. ?Connect the cable or turn the digital component back on. E0001/ MEMORY NG There is an error in the internal data that the deck needs in order to operate. ?Consult your neares

39、t Sony dealer. E0101/ LASER NG There is a problem with the optical pickup. ?The optical pickup may have failed. Consult your nearest Sony dealer. Three- or five- digit code/ Message Cause/Remedy 5 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS Details of History Displays the total recording time. Wh

40、en the total recording time is one minute or longer, displays the time and minute. When the total recording time is less than one minute, displays “Under 1 min”. The displayed time is about 1/4 of the actual recording time when the laser is set to the high power state. Displays the total playback ti

41、me. When the total playback time is one minute or longer, displays the time and minute. When the total playback time is less than one minute, displays “Under 1 min”. Displays the total time when the spindle motor rotates. When the total rotation time is one minute or longer, displays the time and mi

42、nute. When the total rotation time is less than one minute, displays “Under 1 min”. Displays the total number of retries during recording and number of retry errors during playback. Displayed as “r xx p yy”. “xx” indicates the number of retries during recording, “yy” indicates the number of retry er

43、rors during playback. The numbers are displayed in hexadecimal from 00 to FF. Displays the total number of errors. Displayed as “total xx”. The number is displayed in hexadecimal from 00 to FF. Displays the last ten errors. Displayed as “0 x ErrCd”. “x” indicates the history number. A smaller number

44、 indicates a more recent error (00 is the latest). indicates the error code. The error history number is selected by turning the l AMS L knob. Displays the last five retry addresses. Displayed as “xx ADRS yyyy”. “xx” indicates the history number. “yyyy” indicates the cluster where the retry occurred

45、. The history number is selected by turning the l AMS L knob. Mode which erases the error history and the retry address history Operation procedure 1 When “er refresh” is displayed, press the l AMS L knob. 2 After the display changes to “er refresh?”, press the YES button. The “Complete!” message in

46、dicates that the operation has ended. After executing this mode, be sure to check the following: The data has been erased. The mechanism runs normally when recording and playback are performed. Mode which erases the total time of “op rec tm” and “op play tm” These histories are used as a guideline f

47、or the time to replace the optical pick-up. After replacing the optical pick-up, perform this operation to erase the history. Operation procedure 1 When “op change” is displayed, press the l AMS L knob. 2 After the display changes to “op change?”, press the YES button. The “Complete!” message indica

48、tes that the operation has ended. Mode which erases the total time of “spdl rp tm” The history is used as a guideline for the time to replace the spindle motor. After replacing the spindle motor, perform this operation to erase the history. Operation procedure 1 When “spdl change” is displayed, pres

49、s the l AMS L knob. 2 After the display changes to “spdl change?”, press the YES button. The “Complete!” message indicates that the operation has ended. Table of Error Codes Display op rec tm op play tm spdl rp tm retry err total err err history retry adrs er refresh op change spdl change Error Code 10 12 20 21 22 23 24 30 Details of Error Loading error The combination of loading switches is not acceptable. Time out. The beginning of PTOC cannot be read. Contents error. The beginning of PTOC can be read. Time out.