sony_MXD-D3_service_manual 维修电路图.pdf

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1、MICROFILM SERVICE MANUAL COMPACT DISC MINIDISC DECK US Model Canadian Model AEP Model UK Model E Model Chinese Model SPECIFICATIONS MXD-D3 Continued on next page U.S. and foreign patents licensed form Dolby Laboratories Licensing Corporation. Model Name Using Similar MechanismNEW CD Mechanism TypeCD

2、M14H-5TBD26B Base Unit NameBU-5TBD26B Optical Pick-up NameKSS-213BH/Z-NP Model Name Using Similar MechanismNEW MD Mechanism TypeMDM-5X2B Base Unit NameMBU-5X2B Optical Pick-up NameKMS-262A/J1N CD Section MD Section Photo: Gold 收音机爱好者资料库 Ra d i o Fa n s .CN 2 SELF-DIAGNOSIS FUNCTION The self-diagnosi

3、s 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 error codes for the customer, refer to the following box in the instruction manual. For det

4、ails 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 HISTORY DISPLAY MODE) Note: Perform the self-diagnosis function in the “error history displ

5、ay 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. 1.Press thex(CD), CLEAR (CD),x(MD) and CLEAR (MD) buttons at the same time. 2.Press the AMS

6、 (MD) knob andx(MD) button to display “ To Normal”. 3.Turn the AMS (MD) knob and when “ MD Test” is displayed, press the AMS (MD) knob. 4.Turn the AMS (MD) knob and when “Service” is displayed, press the YES button. 5.Turn the AMS (MD) knob to display “ERR DP MODE”. 6.Press the YES button to sets th

7、e error history mode and displays “total rec”. 7.Select the contents to be displayed or executed using the AMS (MD) knob. 8.Press the AMS (MD) knob to display or execute the contents selected. 9.Press the AMS (MD) knob another time returns to step 6. 10. Press the MENU/NO button to display “ERROR DP

8、 MODE” and release the error history mode. 11. To release the test mode, press the?/1button to turn the power OFF. lL lL lL lL lL lL lL lL 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

9、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 “rssssssh”. The displayed time is the total time the

10、 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 “pssssssh”. The time displayed is the total actual play time. Pauses are not counted. The time is displayed

11、 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 “rss pss”. “r” indicates the retries during recording while “p” indicates the retry errors during play. The number of retries and retry errors are

12、 displayed in hexadecimal digits from 00 to FF. total errDisplays the total number of errors. Displayed as “total ss”. The number of errors is displayed in hexadecimal digits from 00 to FF. err historyDisplays the 10 latest errors. Displayed as “0s E”. s indicates the history number. The smaller the

13、 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 (MD) knob. er refreshMode which erases the “retry err”, “total err”, and “err history” histories. When returning the

14、 unit to the customer after completing repairs, perform this to erase the past error history. After pressing the AMS (MD) knob 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

15、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 the optical pickup has been r

16、eplaced, perform this operation and erase the history. After pressing the AMS (MD) knob 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

17、 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 lL lL lL 收音机爱好者资料库 Ra d i o Fa n s .CN 4

18、 SECTION 1 SERVICING NOTES TABLE OF CONTENTS SELF-DIAGNOSIS FUNCTION.2 1.SERVICING NOTES.4 2.GENERAL. 17 3.DISASSEMBLY. 18 4.TEST MODE. 24 5.ELECTRICAL ADJUSTMENTS. 30 6.DIAGRAMS 6-1.Note for Printed Wiring Boards and Schematic Diagrams . 41 6-2.Printed Wiring Board BD (CD) Board . 42 6-3.Schematic

19、Diagram BD (CD) Board . 43 6-4.Schematic Diagram BD (MD) Board (1/2) . 44 6-5.Schematic Diagram BD (MD) Board (2/2) . 45 6-6.Printed Wiring Board BD (MD) Board . 46 6-7.Schematic Diagram MAIN (1/3) /LOADING Boards . 47 6-8.Schematic Diagram MAIN Board (2/3) . 48 6-9.Schematic Diagram MAIN Board (3/3

20、) . 49 6-10. Printed Wiring Board MAIN Board (Side A) . 50 6-11. Printed Wiring Boards MAIN (Side B)/LOADING Boards . 51 6-12. Printed Wiring Boards DISPLAY/PWSW/HP Boards . 52 6-13. Schematic Diagram DISPLAY/PWSW/HP Boards . 53 6-14. Printed Wiring Board TRANS Board . 54 6-15. Schematic Diagram TRA

21、NS Board . 55 6-16. Printed Wiring Board SW Board . 55 6-17. Schematic Diagram SW Board . 55 6-18. IC Pin Function Description . 63 7.EXPLODED VIEWS. 72 8.ELECTRICAL PARTS LIST. 79 SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety check before releasing t

22、he 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 exposed met

23、al 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. 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

24、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 and Sanw

25、a 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 ATTENTION

26、AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFIS PAR UNE MARQUE 0 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

27、PUBLIS PAR SONY. 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 WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS P

28、UB- LISHED BY SONY. 5 This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT MARKING is located on the rear exterior. Laser component in this product is capable of emitting radia- tion exceeding the limit for Class 1. This caution label is located inside the unit. CAUTION

29、 Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. The laser diode in the optical pick-up block may suffer electro- static break-down because of the potential difference generated by the charged electrostatic l

30、oad, etc. on clothing 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 The las

31、er beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emis- sion, observe from more than 30 cm away from the objective lens. LASER DIODE AND FOCUS SEARCH OPERATION CHECK Ca

32、rry out the “S curve check” in “CD section adjustment” and check that the S curve waveforms is output three times. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparat

33、fabrikanten. Brukte batterier kasseres i henhold til fabrikantens instruksjoner. 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 s

34、e on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hvit kytetty paristo valmistajan ohjeiden mukaisesti. 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

35、 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 minus side of a tantalum capacitor may be dam- aged by heat. ADVARSEL! L

36、ithiumbatteri-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 same or equivalent type recommended by the manufa

37、cturer. Discard used batteries according to the manufacturers instruc- tions. Note: Be sure to connect all wires (including FFC) in the MD section before applying power or ICs may be damaged. 6 ModelPart No. AEP, UK models4-220-708-0s Canadian model4-220-708-1s Singapore model4-220-708-3s US model4-

38、220-708-4s Chinese model4-220-708-5s MODEL IDENTIFICATION BACK PANEL Part No. HOW TO OPEN THE DISC TABLE WHEN POWER SWITCH TURNS OFF. In removing the front panel with the power not supplied, insert a flat-blade screwdriver into a hole at the bottom of loading section and rotate it counterclockwise.

39、Then, draw out the disc table. disc table flat-blade screwdriver 7 CLEANING OBJECTIVE LENS OF OPTICAL PICK-UP IN MD In cleaning the objective lens of optical pick-up, move the mechanism deck by the following method. Method: 1. Eject the disc, if loaded. 2. Disconnect the power cord from the socket t

40、o shut off the power supply. 3. Move the part C toward the direction D, while shifting the pawl in section A toward B using tweezers, etc. 4. Moving the part C freely, clean the objective lens at the position easy for cleaning. A C D B objective lens of optical pick-up CLEANING OBJECTIVE LENS OF OPT

41、ICAL PICK-UP IN CD In cleaning the objective lens of optical pick-up, move the mechanism deck by the following method. Method: 1.Eject the disc, if loaded. 2.Disconnect the power cord from the socket to shut off the power supply. 3.Rotating the gear in section A by your fingers clean the objective l

42、ens at the position easy for cleaning. A section 8 JIG FOR CHECKING BD (MD) BOARD WAVEFORM The special jig (J-2501-149-A) is useful for checking the waveform of the BD (MD) board. The names of terminals and the checking items to be performed are shown as follows. GND: Ground I+3V : For measuring IOP

43、 (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 signal RF: RF signal (Check jitter) CN110 RF 5P Connector 6P connector VCTEO IOP I+

44、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 9 IOP DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC171 OF BD (MD) BOARD) ARE REPLACED The IOP value labeled on the optical pick-up can be recorded in the n

45、on-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 (MD) board), record the IOP value on the optical pick-up according to the following procedure. Record Proce

46、dure: 1.Press thex(CD), CLEAR (CD),x(MD) and CLEAR (MD) buttons at the same time. 2.Press the AMS (MD) knob andx(MD) button to display “ To Normal”. 3.Turn the AMS (MD) knob and when “ MD Test” is displayed, press the AMS (MD) knob. 4.Turn the AMS (MD) knob to display “Service”, and press the YES button. 5.Turn the AMS (MD) knob to display “Iop Write” (C28), and press the YES button. 6.The display becomes “Ref=.” ( is an arbitrary number) and the numbers which can be change