sony_MDS-DRE1_service_manual 维修电路图.pdf

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1、MICROFILM SERVICE MANUAL MINIDISC RECORDER/PLAYER US Model Canadian Model AEP Model UK Model SPECIFICATIONS MDS-DRE1 U.S. and foreign patents licensed form Dolby Laboratories Licensing Corporation. Model Name Using Similar MechanismMDS-JA3ES MD Mechanism TypeMDM-2CR Base Unit NameMBU-2B Optical Pick

2、-up NameKMS-210A/J-N Continued on next page 收音机爱好者资料库 Ra d i o Fa n s .CN 2 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. NE REMPLACER CES COM- POSANTS QU

3、E 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 OPERATION. REPLACE THESE COMPONENTS

4、 WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. TABLE OF CONTENTS 1.SERVICING NOTES.3 2.GENERAL.7 3.DISASSEMBLY.9 4.TEST MODE. 12 5.ELECTRICAL ADJUSTMENTS. 15 6.DIAGRAMS 6-1.Block Diagram SERVO Section . 21 6-2.Block Diagram MAIN Section (1/2

5、) . 23 6-3.Block Diagram MAIN Section (2/2) . 25 6-4.Block Diagram DISPLAY/KEY/POWER SUPPLY Section . 27 6-5.Notes for Printed Wiring Board and Schematic Diagram . 30 6-6.Printed Wiring Board BD Board (SIDE A) . 31 6-7.Printed Wiring Board BD Board (SIDE B) . 33 6-8.Schematic Diagram BD Section (1/2

6、) . 35 6-9.Schematic Diagram BD Section (2/2) . 37 6-10. Printed Wiring Boards DETECTION SW Board, MOTOR Board . 39 6-11. Schematic Diagram DETECTION SW/MOTOR Section . 41 6-12. Printed Wiring Board DIGITAL Board (SIDE A) . 43 6-13. Printed Wiring Board DIGITAL Board (SIDE B) . 45 6-14. Schematic Di

7、agram DIGITAL Section (1/4) . 47 6-15. Schematic Diagram DIGITAL Section (2/4) . 49 6-16. Schematic Diagram DIGITAL Section (3/4) . 51 6-17. Schematic Diagram DIGITAL Section (4/4) . 53 6-18. Printed Wiring Board PANEL Section (1) . 56 6-19. Schematic Diagram PANEL Section (1) . 57 6-20. Printed Wir

8、ing Boards PANEL Section (2) . 59 6-21. Schematic Diagram PANEL Section (2) . 61 6-22. Printed Wiring Boards POWER Section . 63 6-23. Schematic Diagram POWER Section . 65 6-24. IC Pin Function Description . 77 7.EXPLODED VIEWS. 88 8.ELECTRICAL PARTS LIST. 93 收音机爱好者资料库 Ra d i o Fa n s .CN 3 SECTION 1

9、 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 leakage. Check leakage as desc

10、ribed 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 microampers.). Leakage current can be measured by any one of three methods. 1.A commercial leakage t

11、ester, 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 of a VOM or battery-operate

12、d 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 suit- able. (See Fig. A) Fi

13、g. 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 LOWER SIDE CABINET (BOTTOM VIEW) Part No. Front Side 4-210-100-1 : AEP and UK models 4-210-100-2 : US and Canadian models ADVARSEL Eksplosjonsfare ved fei

14、laktig skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier kasseres i henhold til fabrikantens instruksjoner. VARNING Explosionsfara vid felaktigt batteribyte. Anvnd samma batterityp eller en likvrdig typ som rekommenderas av apparat

15、tillverkaren. Kassera anvnt batteri enligt gllande freskrifter. VAROITUS Paristo voi rjht, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hvit kytetty paristo valmistajan ohjeiden mukaisesti. ADVARSEL! Lithiumbatteri-Eksplosionsfare ved fejlag

16、tig 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 manufacturer. Discard used batteries according

17、 to the manufacturers instruc- tions. 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 load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and

18、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 laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objecti

19、ve 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. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 收音机爱好者资料库 Ra d i o Fa n s .CN 4 Flexible Circuit Board Repairing Keep the temperature of the

20、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 disconnected chip component. No

21、tice that the minus side of a tantalum capacitor may be dam- aged by heat. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PR

22、ODUCT MARKING is located on the rear exterior. Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. The following caution label is located inside the unit. 5 FORCED RESET The system microprocessor can be reset in the following way. Use these methods when

23、the unit cannot be operated normally due to the overrunning of the microprocessor, etc. Method 2: Disconnect the power plug, and short-circuit CN451 of the POWER board with a pair of tweezers, etc. POWER board (Component Side) Method 1: Set TP (RESET) of the DIGITAL board to ground momentarily. DIGI

24、TAL board (Side A) RETRY CAUSE DISPLAY MODE In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent display tube. This is useful for locating the faulty part of the unit. The retry cause, number of retries, and number of retry errors are displayed. Ea

25、ch is displayed in hexadecimal number. Method: 1. Load a recordable disc whose contents can be erased into the unit. 2. Press the STOP button, EJECT button, PAD1 button simultaneously. 3. Press the REC button, and start recording. 4. The # value increases with each retry. If an error occurs after a

26、retry, the count will also increase. 5. To exit the test mode, press the (POWER) button. Fig. 1 Reading the Test Mode Display R.T s c # # e Fluorescent Display Tube Signs : Cause of retry # # : Number of retries : Number of retry errors All three displays above are in hexadecimal numbers. CN1 TP (RE

27、SET) IC101 CN901 BT451 1 2 CN451 (RESET) r U 6 Reading the Retry Cause Display *1 Some displays are not used depending on the microprocessor version. Reading the Display: Convert the hexadecimal display into binary display. If more than two causes, they will be added. Example When 42 is displayed: H

28、igher bit : 4 = 0100 n b6 Lower bit : 2 = 0010 n b1 In this case, the retry cause is combined of “spindle is slow” and “ader5”. When A2 is displayed: Higher bit : A = 1010 n b7+b5 Lower bit : 2 = 0010 n b1 The retry cause in this case is combined of “access fault”, “IVR rec error”, and “ader5”. Hexa

29、decimal n Binary Conversion Table HexadecimalBinaryHexadecimalBinary 0 1 2 3 4 5 6 7 8 9 A B C D E F 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 Reference: In this test mode, when the PLAY/PAUSE button is pressed, and the disc is played back, the “PLAYBACK MODE” i

30、s set. The display becomes as shown in Fig. 2. The playback mode is not used in particular during servicing. 44 p Fig. 2 Display during Playback Mode 4 : Parts No. (Name of area named on TOC) : Address (Physical address on disc) p : Track mode (Copyright information of each part, information on copy

31、right, etc.) Hexadecimal Bit Binary Higher BitsLower Bits 84218421 b7 b6 b5 b4 b3 b2 b1 b0 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000 When more than 3.5 shocks are detected When ADER was counted more than five times continuously When ADIP address is not continuous (Not u

32、sed) When not in focus When ABCD signal level exceeds the specified range When spindle rotation is detected as slow When access operation is not performed normally Hexa- decimal shock *1 ader5 Discontinuous address (Not used) FCS incorrect IVR rec error Spindle is slow Access fault Cause of RetryOcc

33、urring conditions 01 02 04 08 10 20 40 80 7 SECTION 2 GENERAL NAMES AND FUNCTIONS OF PARTS This section is extracted from instruction manual. 8 9 UPPER CABINET SECTION MD ASSEMBLY Note: Follow the disassembly procedure in the numerical order given. SECTION 3 DISASSEMBLY 4two connectors (CN801, 802)

34、3Open the upper cabinet section in arrow direction. 1five screws (BV3 10) 1three screws (BV3 10) 2two screws (BV3 8) 6upper cabinet section 4two connectors (CN701, 751) 5flat wire (CN902) 3two screws (BVTP3 8) 2two flat wires (CN4, 5) 3two screws (BVTP3 8) 1connector (CN3) 4MD assembly 10 BRACKET (M

35、D) SLIDER (M) ASSEMBLY 2two screws (B2.6 18) 1Rotate the pully (BD) in arrow direction A and move the slider assembly in arrow direction B. 2two screws (B2.6 18) 3two collars 4insulator (MD) 4two insulators (MD) 5compression spring 6bracket (MD) 5compression spring 4insulator (MD) 3two collars 5two

36、compression springs A B slider assembly claw B C A B 4Move the claw C on the slider up to the base groove in arrow direction A, and raise it in arrow direction B to remove. claw A claw C 1Disengage a coil spring from the claw A. 2Disengaging the claw B, raise the lever (SLM) upwards to remove. 3Rota

37、te the pully (BD) in arrow direction C. Base groove 11 BASE UNIT AND LOADING MOTOR ASSEMBLY SLIDER ASSEMBLY MOUNTING 4two screws (B2.6 5) 1screw (BV3 6) 1two screws (BV3 6) 5connector (CN192) 6loading motor assembly 2base unit 3belt B A C 3Move the slider assembly in arrow direction B, and lock it t

38、o the lever (SLM). 1Rotate fully the lever (SLM) in arrow direction A. 2Rotate the pully (BD) in arrow C direction. 12 SECTION 4 TEST MODE 4-4. Selecting the Test Mode Eight test modes are selected by turning the AMS knob. Function AMS knob ENTER/YES button EDIT/NO button 4-1. Setting the Test Mode

39、Press (POWER) switch while pressing the AMS knob to turn POWER ON. 4-2. Exiting the Test Mode Press the REPEAT button. Unplug the power plug from an outlet. 4-3. Basic Operations of the Test Mode All operations are performed using the AMS knob, ENTER/YES button, and EDIT/NO button. The functions of

40、these buttons are as follows. Contents Changes parameters and modes Proceeds onto the next step. Finalizes input. Returns to previous step. Stops operations. Contents Temperature compensation offset adjustment Laser power adjustment Traverse adjustment Focus bias adjustment Focus bias check Continuo

41、us playback mode Continuous recording mode Non-volatile memory mode * Display TEMP ADJUS LDPWR ADJUS EFBAL ADJUS FBIAS ADJUS FBIAS CHECK CPLAY MODE CREC MODE EEP MODE For detailed description of each adjustment mode, refer to 5. Electrical Adjustments. If a different adjustment mode has been selecte

42、d by mistake, press the EDIT/NO button to exit from it. * The EEP MODE is not used in servicing. If set accidentally, press the EDIT/NO button immediately to exit it. 4-4-1. Operating the Continuous Playback Mode 1. Entering the continuous playback mode 1Set the disc in the unit (either MO or CD).(M

43、O: Recordable disc, CD: Disc for playback only) 2Rotate the AMS knob and display “CPLAY MODE”. 3Press the ENTER/YES button to change the display to “CPLAY IN”. 4When access completes, the display changes to “C1 = AD = ”. Note: The “ ” displayed are arbitrary numbers. 2. Changing the parts to be play

44、ed back 1 Press the ENTER/YES button during continuous playback to change the display to “CPLAY MID”, “CPLAY OUT”. When pressed another time, the parts to be played back can be changed. 2 When access completes, the display changes to “C1 = AD = ”. Note: The “ ” displayed are arbitrary numbers. 3. En

45、ding the continuous playback mode 1 Press the EDIT/NO button. The display will change to “CPLAY MODE”. 2 Press the EJECT button and remove the disc. Note 1: The playback start addresses for IN, MID, and OUT are as follows. IN40h cluster MID300h cluster OUT700h cluster U 13 Function PLAY/PAUSE STOP )

46、 0 r REC BANK PLAY MODE DISPLAY Contents Sets continuous playback when pressed in the STOP state. When pressed during continuous playback, the tracking servo turns ON/OFF. Stops continuous playback and continuous recording. The sled moves to the outer circumference only when this is pressed. The sle

47、d moves to the inner circumference only when this is pressed. Turns recording ON/OFF when pressed during continuous playback. Switches between the pit and groove modes when pressed. Switches the spindle servo mode (CLVS and A). Switches the display when pressed.Returns to previous step. Stops operations. Note: The erasing-protection tab is not de