索尼 sony_MDS-JA333ES_service_manual 电路图 维修手册.pdf

《索尼 sony_MDS-JA333ES_service_manual 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《索尼 sony_MDS-JA333ES_service_manual 电路图 维修手册.pdf（95页珍藏版）》请在收音机爱好者资料库上搜索。

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

2、atories Licensing Corporation. Photo : GOLD System MiniDisc digital audio system Disc MiniDisc Laser Semiconductor laser ( l = 780 nm) Emission duration: continuous Laser output MAX 44.6 W 1 ) 1) This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical

3、 Pick-up Block with 7 mm aperture. Laser diode Material: GaAlAs Revolutions (CLV) 400 rpm to 900 rpm Error correction ACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency 44.1 kHz Coding ATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3 Modulation system EFM (Eight-to-Fourteen Mod

4、ulation) Number of channels 2 stereo channels Frequency response 5 to 20,000 Hz 0.3 dB Signal-to-noise ratio Over 100 dB during play Wow and flutter Below measurable limit Inputs ANALOG IN Jack type: phono Impedance: 47 k W Rated input: 500 mVrms Minimum input: 125 mVrms DIGITAL IN OPT1 Connector ty

5、pe: square optical Impedance: 660 nm (optical wave length) DIGITAL IN OPT2 Connector type: square optical Impedance: 660 nm (optical wave length) DIGITAL IN COAXIAL Jack type: phono Impedance: 75 W Rated input: 0.5 Vp-p, 20 % Outputs PHONES Jack type: stereo phone Rated output: 28 mW Load impedance:

6、 32 W ANALOG OUT Jack type: phono Rated output: 2.5 Vrms (at 50 k W ) Load impedance: over 10 k W2 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 WIT

7、H SONY 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 REMPLA

8、CER CES 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”

9、 knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGEThe 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). Leak

10、age 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.

11、3. Measuring 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 opera

12、ted digital multimeters that have a 2V AC range are suitable. (See Fig. A) SAFETY CHECK-OUT T o 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 w

13、ith the same 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 t

14、il leverandren. 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 e

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

16、OUT OPTICAL 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 W ) Load impedance: 75 W General Power requirements Where purchased Power requirements US, Canadian 120 V AC, 60 Hz AEP, UK

17、230 V AC, 50/60 Hz Power consumption 20 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) bat

18、teries (2) Design and specifications are subject to change without notice.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 capable o

19、f 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 the minus

20、 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 conductor when

21、 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 Panel 16 3-3. Front Panel Assembly 17 3-4. MD Mechanism De

22、ck 17 3-5. Tray Assembly 18 3-6. BU Holder Assembly 19 3-7. Motor (Loading) Assembly (M10) 19 3-8. Base Unit (MBU-5J) 20 3-9. BD Board 20 3-10. Over Light Head (HR901) 21 3-11. Mini Disc Device (KMS-260B/J1N) 21 4. TEST MODE 22 5. ELECTRICAL ADJUSTMENTS 27 6. DIAGRAMS 6-1. Block Diagrams 37 Main Sec

23、tion 37 Display/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 Section 43 6-7. Printed Wiring Board BD Switch Section 43 6-8. Printed

24、 Wiring Board AD Section 44 6-9. Schematic Diagram AD Section 45 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 Section 49 6-14. Printed Wiring Board DIGITAL Section 50 6-15. Schematic Diagram DIGIT

25、AL Section 51 6-16. Schematic 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 Section 55 6-20. Printed Wiring Board PANEL Section 56 6-21. Schematic Diagram PANEL Section 57 6-22. Printed Wiring Board AC Section

26、 58 6-23. Schematic Diagram AC Section 59 6-22. IC Block Diagrams 61 6-23. IC PinFunction Description 66 7. EXPLODED VIEWS 7-1. Upper Case Assembly 73 7-2. Front Panel Assembly 74 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

27、 Unit (MBU-5J) 78 8. ELECTRICAL PARTS LIST 794 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 err

28、or 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 th

29、e 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. PR

30、OCEDURE 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 acci

31、dentally, 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 Y

32、ES button. 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 th

33、e l AMS L 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/Remed

34、y C11/Protected 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

35、Error The 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 r

36、ead the 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 t

37、o record 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 compo

38、nent 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 near

39、est 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/Remedy5 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 minute. 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 ret