sony_MDS-M100_service_manual 维修电路图.pdf

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1、MICROFILM SERVICE MANUAL MINIDISC DECK US Model Canadian Model AEP Model UK Model E Model SPECIFICATIONS MDS-M100 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. Cont

2、inued on next page 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 during servicing. For details on how to view

3、 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 FOR USING THE SELF-DIAGNOSIS FUNCTION (ERROR

4、 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, press the MENU/NO button to exit the mode.

5、 1.While pressing the = AMS + knob andpbutton, 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”. 4.Press the YES button to sets the error hi

6、story 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 display “ERROR DP MODE” and exit

7、s 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. 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

8、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. Displayed as “rh”. The displayed time is the

9、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. Pauses are not counted. The time is d

10、isplayed 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. The number of retries and retry errors

11、 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 the history number. The smaller the

12、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” histories. When returning the u

13、nit 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 following when this mode has been e

14、xecuted. 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 pickup. If the optical pickup has been rep

15、laced, 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 data has been erased. The

16、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 i o Fa n s .CN 4 SECTION 1

17、 SERVICING NOTES TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION.2 1.SERVICING NOTES.4 2.GENERAL. 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

18、Wiring Boards and Schematic Diagrams . 42 6-5.Printed Wiring Board BD Board . 43 6-6.Schematic 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 TRANS Board . 53 6-11. Printed W

19、iring Board MAIN Board . 55 6-12. Schematic Diagram MAIN Board (1/2) . 57 6-13. Schematic Diagram MAIN Board (2/2), TRANS Board . 59 6-14. Printed Wiring Boards PANEL/PANEL 2 Boards . 61 6-15. Schematic Diagram PANEL/PANEL 2 Boards . 63 7.EXPLODED VIEWS. 66 8.ELECTRICAL PARTS LIST. 70 SAFETY CHECK-O

20、UT 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 leakage. Check leakage as described below. LEAKAGE TEST The A

21、C 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 microampers). Leakage current can be measured by any one of three methods. 1.A commercial leakage tester, such as the Simpson 229 o

22、r 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 of a VOM or battery-operated AC voltmeter. The “limit” indi

23、ca- 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 suit- able. (See Fig. A) Fig. A.Using an AC voltmeter to ch

24、eck AC leakage. 1.5 k0.15 F AC voltmeter (0.75 V) To Exposed Metal Parts on Set Earth Ground MODEL IDENTIFICATION BACK PANEL Part No. MODELPart No. US model4-216-840-0 Canadian model4-216-840-1 Singapore model4-216-840-2 AEP model4-216-840-3 UK model4-216-840-4 5 Flexible Circuit Board Repairing Kee

25、p the temperature of the soldering iron around 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 discon

26、nected chip component. Notice that the minus 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 instru

27、ksjoner. VARNING Explosionsfara vid felaktigt 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 laitevalmistaja

28、n suosittelemaan tyyppiin. Hvit kytetty paristo 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 i

29、ncorrectly replaced. Replace only with the 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- di

30、ation 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 CLASS 1 LASER PROD- UCT MARKING is located on the rear exterior. This caution label is located inside the unit. ATTENTION A

31、U 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. NE REMPLACER CES COM- POSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS P

32、UBLIS 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 OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PU

33、B- 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 items to be performed are shown as follows. GND: Ground I+3V : For measuring IOP (Check the deterioration of the optical

34、 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 signal RF: RF signal (Check jitter) 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

35、5 1 6 CN110 RF 5P Connector 6P connector VCTEO 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, i

36、t will eliminate the need to look at the value 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 = AMS + knob and

37、 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 “lop Write” (C28), and press the YES button. 4.The display becomes “Ref=.” ( is an arbitrary number)

38、and the numbers which can be changed will blink. 5.Input the IOP value written on the optical pick-up. To select the number: Turn the = AMS + knob. To select the digit: Press the = AMS + knob. 6.When the YES button is pressed, the display becomes “Measu=.” ( is an arbitrary number). 7.As the adjustm

39、ent 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 become “Iop Write”. 9.Press the REPEAT button to complete. Display Precedure: 1.While pressing

40、 the = AMS + knob and p button, connect the power plug to the outlet, and release the = AMS + knob and p button. 2.Turn th = AMS + knob to display “Service”, and press the YES button. 3.Turn the = AMS + knob to display “lop Read” (C27). 4.“./#.#” is displayed and the recorded contents are displayed.

41、 .: indicates the IOP value labeled on the optical pick-up. #.#: 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 PARTS REPLACEMENT AND ADJUSTMENTS Before performing repairs, perform the

42、 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 : 6.8 to 7.2 mW lop (at 7mW) Labeled on the optical pickup Iop value 10mA Tra

43、verse 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 error : Below 80 AD error : Below 2 b.When using check disc (TDYS-1) C1 error

44、 : 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 23) Traverse check (6-3 : See page 23) Focus bias check (6-4 : See page 24) C PLAY check (6-5 : S

45、ee page 24) Self-recording/playback check (6-6 : See page 24) Temperature compensation 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 Repla

46、ce 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 head is distorted Check the mechanism around th

47、e sled Check for disconnection of the circuits around D101 (BD board) Check the signals around IC101, IC121, CN102, CN103 (BD board) Measure if unsatisfactory: Note: The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjustments. When performing adjustments, use the spe