sony_MDS-PC3_service_manual 维修电路图.pdf

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1、MDS-PC3 SPECIFICATIONS SERVICE MANUAL MINIDISC DECK Model Name Using Similar MechanismMDS-JE640 MD Mechanism TypeMDM-7A Optical Pick-up TypeKMS-260B/J1N US Model Canadian Model AEP Model UK Model E Model US and foreign patents licensed form Dolby Laboratories Licensing Corporation. Photo: SILVER Sys

2、temMiniDisc digital audio system DiscMiniDisc 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 aperture. Laser diodeMater

3、ial: GaAlAs Revolutions (CLV)400 rpm to 900 rpm Error correctionAdvanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency44.1 kHz CodingAdaptive Transform Acoustic Coding (ATRAC) Modulation systemEFM (Eight-to-Fourteen Modulation) Number of channels2 stereo channels Frequency response5

4、to 20,000 Hz 0.5 dB Signal-to-noise ratioOver 94 dB during playback Wow and flutterBelow measurable limit Inputs LINE (ANALOG) INJack type: stereo-mini Impedance: 47 kilohms Rated input: 500 mVrms Minimum input: 125 mVrms DIGITAL (OPTICAL) IN Connector type: square optical Impedance: 660 nm (optical

5、 wave length) Outputs LINE (ANALOG) OUT (VARIABLE) Jack type: stereo-mini Rated output: 1 Vrms (at 50 kilohms) Load impedance: Over 10 kilohms DIGITAL (OPTICAL) OUT Connector type: square optical Rated output: 18 dBm Impedance: 660 nm (optical wave length) PHONESJack type: stereo-mini Rated output:

6、5 mW Load impedance: 32 ohms General Where purchasedPower requirements* U.S.A. and Canada120 V AC, 60 Hz Other countries220 230 V AC, 50/60 Hz *Using an AC power adaptor (supplied) Power consumption7 W Dimensions (approx.)152 52 255 mm (6 2 1/8 10 1/8 inches) (w/h/d) incl. projecting parts and contr

7、ols Mass (approx.)1.0 kg (2 lb 4 oz) Supplied accessories AC power adaptor (1) Audio connecting cord (stereo mini-plug 1 y stereo mini-plug 1) (1) Optical cable (1) Remote commander (remote) RM-D52M (1) PC connecting kit PCLK-MN10* (1) * Required for operation by personal computer. For details, refe

8、r to the operating instructions supplied with the PCLK-MN10. 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 are displayed automatically when errors occur, and error codes which show the error history in the test mode du

9、ring 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 following “Procedure for using the Self- Diagnosis Function (Error History Display Mode)”. Procedure f

10、or 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 accidentally

11、, press the x/Z button to exit the mode. Self-Diagnosis Function The decks self-diagnosis function automatically checks the condition of the MD deck when an error occurs, then issues a three-digit code and an error message on the display. If the code and message alternate, find them in the following

12、 table and perform the indicated countermeasure. Should the problem persist, consult your nearest Sony dealer. Three-digit code/MessageCause/Remedy C11/ProtectedThe inserted MD is record-protected. , Take out the MD and close the record-protect slot (page 13). C12/Cannot CopyAn attempt was made to p

13、lay a disc that is not compatible with this deck (MD data disc, etc.). , Replace the disc. C13/Rec ErrorThe 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

14、in quality. , Replace the disc and repeat the recording procedure. C13/Read ErrorThe deck could not read the TOC on the MD properly. , Take out the MD and insert it again. C14/Toc ErrorThe deck could not read the TOC on the MD properly. , Insert another disc. , If possible, erase all the tracks on t

15、he MD (page 29). C41/Cannot CopyThe digitally dubbed material cannot be recorded digitally (page 11). C71/Din UnlockThe 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 connected through t

16、he 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. E0001/MEMORY NGThere is an error in the internal data that the deck needs in order to operate. , Consult your nearest Sony dea

17、ler. E0101/LASER NGThere is a problem with the optical pickup. , Consult your nearest Sony dealer. *Note: As this unit has only a few buttons, one button is assigned with several functions in the test mode.” Press the z button, AMS knob to switch the functions. Each time the z button is pressed, the

18、 display switches in the follwing order, “PGM” t “blank” t “PGM” t . Rotate the AMS knob and the display switches in the following order, “blank” t “TOC” t “EDIT” t “TOC EDIT” t “ ” t “TOC ” t “ EDIT” t “TOC EDIT” t “blank” t . For simplicity, operations of z button will not be discribed here. Examp

19、le) x/Z : Lights-out “PGM” and press the x/Z button. x/Z “PGM” : Display “PGM” and press the x/Z button. The functions of each button change with the display. Bottons and Corresponding Functions “PGM” Lights-out LCD displayed Buttons “PGM” displayed Nothing TOCEDITTOC EDITTOCEDITTOC EDIT displayed /

20、1/1 ENTER REPEATPLAYCLEAR FF PLAY DISPLAY (YES)MODE MENU x/ZEJECT(EDIT)/STOPRECFRSCROLLTIME NO 收音机爱好者资料库 Ra d i o Fa n s .CN 3 1. While pressing the AMS knob and x/Z button, connect the power plug to the outlet, and release the AMS knob and x/Z button. When the test mode is set, “Check” will be disp

21、layed. 2. Rotate the AMS knob and when “Service” is displayed, press the /1 button. 3. Rotate the AMS knob and display “Err Display”. 4. Pressing the /1 button sets the error history mode and displays “op rec tm”. 5. Select the contents to be displayed or executed using the AMS knob. 6. Pressing the

22、 AMS knob will display or execute the contents selected. 7. Pressing the AMS knob another time returns to step 4. 8. Pressing the x/Z button displays “Err Display” and exits the error history mode. 9. To exit the test mode, remove the power plug to the outlet. ITEMS OF ERROR HISTORY MODE ITEMS AND C

23、ONTENTS Selecting the Test Mode Display op rec tm op play tm spdl rp tm retry err total err err history retry adrs er refresh tm refresh op change spdl change History Displays the total recording time. When the total recording time is more than 1 minute, displays the hour and minute When less than 1

24、 minute, displays “Under 1 min” The display time is the time the laser is set to high power, which is about 1/4 of the actual recording time. Displays the total playback time. When the total playback time is more than 1 minute, displays the hour and minute When less than 1 minute, displays “Under 1

25、min” Displays the total rotating time of the spindle motor. When the total rotating time is more than 1 minute, displays the hour and minute When less than 1 minute, displays “Under 1 min” Displays the total number of retry errors during recording and playback Displays “r xx p yy”. xx is the number

26、of errors during recording. yy is the number of errors during playback. This is displayed in hexadecimal from 00 to FF. Displays the total number of errors Displays “total xx”. This is displayed in hexadecimal from 00 to FF. Displays the past ten errors. Displays “0 x ErrCd”. X is the history number

27、. The younger the number, the more recent is the history (00 is the latest). is the error code. Select the error history number using the AMS knob. Displays the past five retry addresses. Displays “xx ADRS yyyy”, xx is the history number, yyyy is the cluster with the retry error. Select the error hi

28、story number using the AMS knob. Mode for erasing the error and retry address histories Procedure 1. Press the AMS knob when displayed as “er refresh”. 2. Press the /1 button when the display changes to “er refresh?”. When “complete!” is displayed, it means erasure has completed. Be sure to check th

29、e following after executing this mode. *Data has been erased. *Perform recording and playback, and check that the mechanism is normal. Mode for erasing the total time of recording and playback Procedure 1. Press the AMS knob when displayed as “tm refresh”. 2. Press the /1 button when the display cha

30、nges to “tm refresh?”. When “complete!” is displayed, it means erasure has completed. Mode for erasing the total time of op rec tm, op play tm. These histories are based on the time of replacement of the optical pickup. If the optical pick-up has been replaced, perform this procedure and erase the h

31、istory. Procedure 1. Press the AMS knob when displayed as “op change”. 2. Press the /1 button when the display changes to “op change?”. When “Complete!” is displayed, it means erasure has completed. Mode for erasing the total spdl rp tm time These histories are based on the time of replacement of th

32、e spindle motor. If the spindle motor has been replaced, perform this procedure and erase the history. Procedure 1. Press the AMS knob when displayed as “spdl change” 2. Press the /1 button when the display changes to “spdl change?” When “Complete!” is displayed, it means erasure has completed. 收音机爱

33、好者资料库 Ra d i o Fa n s .CN 4 Description TABLE OF CONTENTS 1. SERVICING NOTES .5 2. GENERAL. 11 3. DISASSEMBLY 3-1. Case (U) . 14 3-2. MD Mechanism Deck (MDM-74) . 14 3-3. Main Board . 15 3-4. Over Light Head (HR901), BD (MD) Board. 15 3-5. Holder Assy. 16 3-6. Loading Motor Assy (M103) . 16 3-7. Sle

34、d Motor Assy (M102), Slider . 17 3-8. Optical Pick-up (MD) (KMS-260B/JIN) . 17 3-9. Spindle Motor Assy (M101) . 18 4. TEST MODE. 19 5. ELECTRICAL ADJUSTMENTS. 24 6. DIAGRAMS 6-1. Block Diagrams BD Section. 36 Main Section . 37 6-2. Printed Wiring Board BD Section . 38 6-3. Schematic Diagram BD Secti

35、on (1/2) . 39 6-4. Schematic Diagram BD Section (2/2) . 40 6-5. Printed Wiring Board Main Section . 41 6-6. Schematic Diagram Main Section (1/2) . 42 6-7. Schematic Diagram Main Section (2/2) . 43 6-8.Printed Wiring Board Panel Section . 44 6-9. Schematic Diagram Panel Section . 45 6-10. IC Block Di

36、agrams. 46 6-11. IC Pin Functions. 49 7. EXPLODED VIEWS 7-1. Chassis Section . 54 7-2. Mechanism Section-1 (MDM-7A). 55 7-3. Mechanism Section-2 (MDM-7A). 56 8. ELECTRICAL PARTS LIST. 57 Table of Error Codes Error Code 10 12 20 21 22 23 24 30 31 40 41 42 43 50 51 Could not load Loading switches comb

37、ined incorrectly Timed out without reading the top of PTOC Could read top of PTOC, but detected error Timed out without accessing UTOC Timed out without reading UTOC Error in UTOC Could not start playback Error in sector Retry cause generated during normal recording Retried in DRAM overflow Retry oc

38、curred during TOC writing Retry aborted during S.F editing Other than access processing, and could not read address. Focus NG occurred and overran. 5 SECTION 1 SERVICE NOTES This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. La

39、ser component in this product is capable 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 radia- tion exposure. Notes on chip component replacement Never reuse a discon

40、nected chip component. Notice that the 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 care

41、ful not to apply force on the conductor when soldering or unsoldering. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on cl

42、othing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK Never look into the la

43、ser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight. 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

44、COMPONENTS WITH 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 FONCTIONNEM

45、ENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PISES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPMENTS PUBLIS PAR SONY. This caution label is located inside the unit. Lead free soldering MAIN and PANEL boards of this product are lead free soldered (contains no lead). Lead-free solder have the following characteristics. The melting point is about 40 C higher than conventional solder. Conventional soldering iron can be used, but must