sony_MDS-JE630_service_manual 维修电路图.pdf

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1、MICROFILM SERVICE MANUAL MINIDISC DECK US Model Canadian Model SPECIFICATIONS MDS-JE630 U.S. and foreign patents licensed form Dolby Laboratories Licensing Corporation. SystemMiniDisc digital audio system DiscMiniDisc LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Laser outputLes

2、s 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 diodeMaterial: GaAlAs Revolutions (CLV)400 rpm to 900 rpm Error correctionAdvanced Cross Interleave Reed Solomon Code (ACIRC) Sampling fre

3、quency44.1 kHz CodingAdaptive Transform Acoustic Coding (ATRAC) Modulation systemEFM (Eight-to-Fourteen Modulation) Number of channels2 stereo channels Frequency response5 to 20,000 Hz 0.3 dB Signal-to-noise ratioOver 98 dB during playback Wow and flutterBelow measurable limit Inputs LINE (ANALOG) I

4、NJack type: phono Impedance: 47 kilohms Rated input: 500 mVrms Minimum input: 125 mVrms DIGITAL INConnector type: square optical Impedance: 660 nm (optical wave length) Outputs PHONESJack type: stereo phone Rated output: 28 mW Load impedance: 32 ohms LINE (ANALOG) OUTJack type: phono Rated output: 2

5、 Vrms (at 50 kilohms) Load impedance: over 10 kilohms DIGITAL OUTConnector type: square optical Rated output: 18 dBm Load impedance: 660 nm (optical wave length) General Power requirements120 V AC, 60 Hz Power consumption17 W Dimension (approx.)430 95 280 mm (17 3 3/4 11 1/8 in.) (w/h/d) incl. proje

6、cting parts and controls Mass (approx.)3.4 kg (7 lbs 11 oz) Supplied accessories Audio connecting cords (2) Optical cable (1) Remote commander (remote) RM-D15M (1) R6 (size-AA) batteries (2) Design and specification are subject to change without notice. Model Name Using Similar MechanismMDS-JE520 MD

7、 Mechanism TypeMDM-5D Base Unit TypeMBU-5D Optical Pick-up TypeKMS-260B/J1N 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 t

8、he 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 to the following “Procedure for using the Self-Diagnosis Function (Error History Display Mode)

9、”. 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 least required procedure. Be careful not to enter other modes by mistake. If you set other modes

10、 accidentally, press the MENU/NO button to exit the mode. 1.While pressing the AMS knob and p button, connect the power plug to the outlet, and release the AMS knob and p button. 2.Turn the AMS knob and when “Service” is displayed, press the YES button. 3.Turn the AMS knob to display “ERR DP MODE”.

11、4.Press the YES button to sets the error history mode and displays “total rec”. 5.Select the contents to be displayed or executed using the AMS knob. 6.Press the AMS knob to display or execute the contents selected. 7.Press the AMS knob another time returns to step 4. 8.Press the MENU/NO button to d

12、isplay “ERROR DP MODE” and releases the error history mode. 9.To release the test mode, press the REPEAT button. The unit sets into the STANDBY state, the disc is ejected, and the test mode ends. 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 D

13、isplayDetails of History E00No error E01Disc error. PTOC cannot be read (DISC ejected) E02Disc error. UTOC error (DISC not ejected) E03Loading error E04Address cannot be read (Servo has deviated) Table of Error Codes Error CodeError CodeDetails of Error total recDisplays the recording time. Displaye

14、d as “rh”. The displayed time is the total time the laser is set to the high power state. This is about 1/4 of the actual recording time. The time is displayed in decimal digits from 0h to 65535h. total playDisplays the play time. Displayed as “ph”. The time displayed is the total actual play time.

15、Pauses are not counted. The time is displayed in decimal digits from 0h to 65535h. retry errDisplays the total number of retries during recording and number of retry errors during play. Displayed as “r p”. “r” indicates the retries during recording while “p” indicates the retry errors during play. T

16、he 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 ”. The number of errors is displayed in hexadecimal digits from 00 to FF. err historyDisplays the 10 latest errors. Displayed as “0 E”. indicates

17、 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 knob. er refreshMode which erases the “retry err”, “total err”, and “err history

18、” histories. When returning the unit to the customer after completing repairs, perform this to erase the past error history. After pressing the AMS button and “er refresh?” is displayed, press the YES button to erase the history. “Complete!” will be displayed momentarily. Be sure to check the follow

19、ing when this mode has been executed. The data has been erased. The mechanism operates normally when recording and play are performed. tm refreshMode which erases the “total rec” and “total play” histories. These histories serve as approximate indications of when to replace the optical pick-up. If t

20、he optical pickup has been replaced, perform this operation and erase the history. After pressing the AMS button and “tm refresh?” is displayed, press the YES button to erase the history. “Complete!” will be displayed momentarily. Be sure to check the following when this mode has been executed. The

21、data has been erased. The mechanism operates normally when recording and play are performed. E05FOK has deviated E06Cannot focus (Servo has deviated) E07Recording retry E08Recording retry error E09Playback retry error (Access error) E0APlayback retry error (C2 error) Details of Error 收音机爱好者资料库 Ra d

22、i o Fa n s .CN 4 SECTION 1 SERVICING NOTES 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 exposed metal parts for AC leak

23、age. 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 measured by any one of three methods

24、. 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 means o

25、f 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 that have a 2 V AC range are s

26、uit- able. (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 MODEL IDENTIFICATION BACK PANEL TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION.2 1.SERVICING NOTES.4 2.GENERAL. 11 3.DISASSEMBLY. 13 4.TEST MODE. 17 5.ELE

27、CTRICAL ADJUSTMENTS. 22 6.DIAGRAMS 6-1.Block Diagram SERVO Section . 31 6-2.Block Diagram MAIN Section . 33 6-3.Note for Printed Wiring Boards and Schematic Diagrams . 35 6-4.Printed Wiring Board BD Board . 37 6-5.Schematic Diagram BD Board (1/2) . 39 6-6.Schematic Diagram BD Board (2/2) . 41 6-7.Sc

28、hematic Diagram SW Board . 44 6-8.Printed Wiring Board SW Board . 44 6-9.Printed Wiring Board MAIN Board . 45 6-10. Schematic Diagram MAIN Board (1/2) . 47 6-11. Schematic Diagram MAIN Board (2/2) . 49 6-12. Printed Wiring Boards PANEL Section . 51 6-13. Schematic Diagram PANEL Section . 53 6-14. IC

29、 Pin Function Description . 58 7.EXPLODED VIEWS. 65 8.ELECTRICAL PARTS LIST. 69 Part No. ModelPart No. US model4-216-907-7 Canadian model4-216-907-8 5 Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C dur- ing repairing. Do not touch the soldering iron on the s

30、ame conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. CAUTION Use o

31、f controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. Laser component in this product is capable of emitting radia- tion exceeding the limit for Class 1. This appliance is classified as a CLASS 1 LASER product. The CLAS

32、S 1 LASER PROD- UCT MARKING is located on the rear exterior. This caution label is located inside the unit. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT.

33、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 IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPE

34、RATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. 6 JIG FOR CHECKING BD BOARD WAVEFORM The special jig (J-2501-149-A) is useful for checking the waveform of the BD board. The names of terminals and the checking i

35、tems to be performed are shown as follows. GND: Ground I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser) IOP : For measuring IOP (Check the deterioration of the optical pick-up laser) TEO : TRK error signal (Traverse adjustment) VC: Reference level for checking the sign

36、al RF: RF signal (Check jitter) CN110 RF 5P Connector 6P connector VCTEO IOP I+3V GND Mechanism deck RF VC TEO for MDM-3 for MDM-5 IOP I-3V VC RF TEO IOP I+3V GND VC RF TEO IOP I+3V GND 1 5 1 6 7 IOP DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC171 OF BD BOARD) ARE REPL

37、ACED The IOP value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need to look at the value on the optical pick-up label. When replacing the optical pick-up or non-volatile memory (IC171 of BD board), record the IOP value on t

38、he optical pick-up according to the following procedure. Record Procedure: 1.While pressing the AMS knob and p button, connect the power plug to the outlet, and release the AMS knob and p button. 2.Turn the AMS knob to display “Service”, and press the YES button. 3.Turn the AMS knob to display “Iop

39、Write” (C28), and press the YES button. 4.The display becomes “Ref=.” ( is an arbitrary number) and the numbers which can be changed will blink. 5.Input the IOP value written on the optical pick-up label. To select the number: Turn the AMS knob. To select the digit: Press the AMS knob. 6.When the YE

40、S button is pressed, the display becomes “Measu=.” ( is an arbitrary number). 7.As the adjustment results are recorded for the 6 value. Leave it as it is and press the YES button. 8.“Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will

41、become “Iop Write”. 9.Press the REPEAT button to complete. Display Procedure: 1.While pressing the AMS knob and p button, connect the power plug to the outlet, and release the AMS knob and p button. 2.Turn the AMS knob to display “Service”, and press the YES button. 3.Turn the AMS knob to display “I

42、op Read” (C27). 4.“./#.#” is displayed and the recorded contents are displayed. .: indicates the IOP value on the optical pick-up label. #.#: indicates the IOP value after adjustment 5.To end, press the AMS knod or MENU/NO button to display “Iop Read”. Then press the REPEAT button. 8 CHECKS PRIOR TO

43、 PARTS REPLACEMENT AND ADJUSTMENTS Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in “5 Electrical Adjustments”. 0.9 mW power Specified value : 0.84 to 0.92 mW 7.0 mW power Specified value : 6.

44、8 to 7.2 mW lop (at 7mW) Labeled on the optical pickup Iop value 10mA Traverse waveform Specified value : Below 10% offset Error rate check Specified value : For points a, b, and c C1 error : About 200 AD error : Above 00 Error rate check Specified value: a.When using test disc (MDW-74/AU-1) C1 erro

45、r : Below 80 AD error : Below 2 b.When using check disc (TDYS-1) C1 error : Below 50 CPLAY error rate check Specified value: C1 error : Below 80 AD error : Below 2 Unsatisfactory if displayed as T= (#) NG” NG (, # are both arbitrary numbers) Laser power check (6-2 : See page 24) Traverse check (6-3

46、: See page 24) Focus bias check (6-4 : See page 25) C PLAY check (6-5 : See page 25) Self-recording/playback check (6-6 : See page 25) Temperature compensation offset check (6-1 : See page 24) Criteria for Determination (Unsatisfactory if specified value is not satisfied) Clean the optical pick-up A

47、djust again Replace the optical pick-up Replace the optical pick-up Replace the optical pick-up Replace the optical pick-up Replace the optical pick-up If always unsatisfactory: Replace the overwrite head Check for disconnection of the circuits around the overwrite head If occasionally unsatisfactory: Check if the overwrite