sony_MDS-S40_service_manual 维修电路图.pdf

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1、SERVICE MANUAL MINIDISC DECK US Model Canadian Model AEP Model UK Model E Model Australian Model SPECIFICATIONS MDS-S40 Model Name Using Similar MechanismMDS-JE520 MD Mechanism TypeMDM-5A Optical Pick-up TypeKMS-260A/J1N U.S. and foreign patents licensed form Dolby Laboratories Licensing Corporation

2、. Photo: Silver model Continued on next page 9-928-838-12Sony Corporation 2001C0500-1Audio Entertainment Group C 2001.3General Engineering Dept. Ver 1.1 2001.03 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 display

3、ed 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 to the fo

4、llowing “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 least requi

5、red 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.While pressing the = + knob andpbutton, connect the power plug to the outlet, and release the = + knob and p button. 2.Turn the = + knob and when “Service”

6、 is displayed, press the YES button. 3.Turn the = + knob to display “ERR DP MODE”. 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 = + knob. 6.Press the = + knob to display or execute the contents selected. 7

7、.Press the = + knob another time returns to step 4. 8.Press the MENU/NO button to display “ERROR DP MODE” and exits the error history mode. 9.To exit the test mode, press the REPEAT button. The unit sets into the STANDBY state, the disc is ejected, and the test mode ends. Audio connecting cords (2)

8、Optical cable (1) Remote commander (remote) RM-D29M (1) R6 (size-AA) batteries (2) 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 E00No error E01Disc error. PTOC cannot be read (DISC ejected) E02Disc error. UTOC error

9、(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. Displayed as “rh”. The displayed time is the total time the laser is set to the high power state. This is about 1/4 of th

10、e 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. Pauses are not counted. The time is displayed in decimal digits from 0h to 65535h. retry errDisplays the total nu

11、mber 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. The number of retries and retry errors are displayed in hexadecimal digits from 00 to FF. total errDisplays the to

12、tal 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 the history number. The smaller the number, the more recent is the error. (00 is the latest). indicates the erro

13、r code. Refer to the following table for the details. The error history can be switched by turning the = + knob. er refreshMode which erases the “retry err”, “total err”, and “err history” histories. When returning the unit to the customer after completing repairs, perform this to erase the past err

14、or history. After pressing the = + button and “er 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 data has been erased. The mechanism operates normally when recording an

15、d 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 pickup. If the optical pickup has been replaced, perform this operation and erase the history. After pressing the = + button a

16、nd “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 data has been erased. The mechanism operates normally when recording and play are performed. E05FOK has deviated E

17、06Cannot 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 i o Fa n s .CN 4 SECTION 1 SERVICING NOTES TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION.2 1.SERVICING NOTES.4 2.GENER

18、AL. 11 3.DISASSEMBLY. 12 4.TEST MODE. 16 5.ELECTRICAL ADJUSTMENTS. 21 6.DIAGRAMS 6-1.IC Pin Function Description . 30 6-2.Block Diagram SERVO Section . 37 6-3.Block Diagram MAIN Section . 39 6-4.Note for Printed Wiring Boards and Schematic Diagrams . 42 6-5.Printed Wiring Board BD Board . 43 6-6.Sch

19、ematic Diagram BD Board (1/2) . 45 6-7.Schematic Diagram BD Board (2/2) . 47 6-8.Schematic Diagram SW Board . 49 6-9.Printed Wiring Board SW Board . 49 6-10. Printed Wiring Boards PT/VOL SEL Boards . 53 6-11. Printed Wiring Board MAIN Board . 55 6-12. Schematic Diagram MAIN Board (1/2) . 57 6-13. Sc

20、hematic Diagram MAIN Board (2/2), PT/VOL SEL Boards . 59 6-14. Printed Wiring Board PANEL Board . 61 6-15. Schematic Diagram PANEL Board . 63 7.EXPLODED VIEWS. 66 8.ELECTRICAL PARTS LIST. 70 SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety check before r

21、eleasing the set to the customer: Check the antenna terminals, metal trim, “metallized” knobs, screws, and all other exposed 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 e

22、xposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers.). Leakage 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-ope

23、rated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this job. 3.Measuring the voltage drop 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

24、 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 suit- 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 M

25、ODEL IDENTIFICATION BACK PANEL Part No. MODELPart No. US model4-216-765-1 Canadian model4-216-765-2 AEP, UK, Argentine models4-216-765-3 Singapore model4-216-765-4 Hong Kong model4-216-765-5 Australian model4-216-765-6 5 Flexible Circuit Board Repairing Keep the temperature of the soldering iron aro

26、und 270 C dur- ing 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 soldering or unsoldering. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minu

27、s side of a tantalum capacitor may be dam- aged by heat. 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 felakti

28、gt batteribyte. Anvnd samma batterityp eller en likvrdig typ som rekommenderas av apparattillverkaren. Kassera anvnt batteri enligt gllande freskrifter. VAROITUS Paristo voi rjht, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hvit kytetty par

29、isto valmistajan ohjeiden mukaisesti. ADVARSEL! Lithiumbatteri-Eksplosionsfare ved fejlagtig hndtering. Udskiftning m kun ske med batteri af samme fabrikat og type. Levr det brugte batteri tilbage til leverandren. CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the

30、same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturers instructions. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. Laser component in this pro

31、duct is capable of emitting radia- tion exceeding the limit for Class 1. This appliance is classified as a CLASS 1 LASER product. The CLASS 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 CO

32、MPOSANTS IDENTIFIS PAR UNE MARQUE ! 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 WA

33、RNING! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! 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. 6 JIG FOR CHECKING BD BO

34、ARD 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 items 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 (Ch

35、eck the deterioration of the optical pick-up laser) TEO : TRK error signal (Traverse adjustment) VC: Reference level for checking the signal RF: RF signal (Check jitter) RF VC TEO for MDM-5 IOP I+3V VC RF TEO IOP I+3V GND VC RF TEO IOP I+3V GND 1 5 1 6 for MDM-3 CN110 RF 5P Connector 6P connector VC

36、TEO IOP I+3V GND Mechanism deck 7 IOP DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC171 OF BD BOARD) ARE REPLACED 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 va

37、lue on the label of the optical pick-up. When replacing the optical pick-up or non-volatile memory (IC171 of BD board), record the IOP value on the optical pick-up according to the following procedure. Record Precedure: 1.While pressing the = + knob and p button, connect the power plug to the outlet

38、, and release the = + knob and p button. 2.Turn the = + knob to display “Service”, and press the YES button. 3.Turn the = + knob to display “lop 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 th

39、e IOP value written on the optical pick-up. To select the number: Turn the = + knob. To select the digit: Press the = + knob. 6.When the YES 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 pre

40、ss the YES button. 8.“Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop Write”. 9.Press the REPEAT button to complete. Display Precedure: 1.While pressing the = + knob and p button, connect the power plug to the outlet, a

41、nd release the = + knob and p button. 2.Turn th = + knob to display “Service”, and press the YES button. 3.Turn the = + knob to display “lop Read” (C27). 4.“./#.#” is displayed and the recorded contents are displayed. .: indicates the IOP value labeled on the optical pick-up. #.#: indicates the IOP

42、value after adjustment 5.To end, press the = + knod or MENU/NO button to display “Iop Read”. Then press the REPEAT button. 8 CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of

43、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 : 6.8 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 : Fo

44、r 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 error : 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 : Belo

45、w 2 Unsatisfactory if displayed as T= (#) NG” NG (, # are both arbitrary numbers) Laser power check (6-2 : See page 23) Traverse check (6-3 : See page 23) Focus bias check (6-4 : See page 24) C PLAY check (6-5 : See page 24) Self-recording/playback check (6-6 : See page 24) Temperature compensation

46、offset check (6-1 : See page 23) Criteria for Determination (Unsatisfactory if specified value is not satisfied) Clean the optical pick-up Adjust 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 alway

47、s unsatisfactory: Replace the overwrite head Check for disconnection of the circuits around the overwrite head If occasionally unsatisfactory: Check if the overwrite head is distorted Check the mechanism around the sled Check for disconnection of the circuits around D101 (BD board) Check the signals around IC101, I