sony_MDS-JE330_service_manual 维修电路图.pdf

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1、 1 MICROFILM MDS-JE330 SPECIFICATIONS SERVICE MANUAL MINIDISC DECK Continued on next page Model Name Using Similar MechanismMDS-JE520 MD Mechanism TypeMDM-5A Optical Pick-up TypeKMS-260A/J1N US Model Canadian Model AEP Model UK Model E Model Australian Model 收音机爱好者资料库 Ra d i o Fa n s .CN 2 SELF-DIAG

2、NOSIS 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 error codes for the customer, refer to the following box in

3、 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 History Display Mode). Note: Perform the self-diagnosis fu

4、nction 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. 1. While pressing the AMS knob and p button, connect the

5、power plug to the outlet, and release the AMS knob and p button. 2. Rotate the AMS knob and when “Service” is displayed, press the YES button. 3. Rotate the AMS knob and display “ERR DP MODE”. 4. Pressing the YES button sets the error history mode and displays “total rec”. 5. Select the contents to

6、be displayed or executed using the AMS knob. 6. Pressing the AMS knob will display or execute the contents selected. 7. Pressing the AMS knob another time returns to step 4. 8. Pressing the MENU/NO button displays “ERROR DP MODE” and exits the error history mode. 9. To exit the test mode, press the

7、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 Display total rec total play retry err total err err history er refresh tm refresh Details of Histo

8、ry No error Read error. PTOC cannot be read (DISC ejected) TOC error. UTOC error (DISC not ejected) Loading error Address cannot be read (Servo has deviated) Displays 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

9、/4 of the actual recording time. The time is displayed in decimal digits from 0h to 65535h. Displays 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. Displays the total number of ret

10、ries 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. Displays the total number of errors

11、. Displayed as “total ”. The number of errors is displayed in hexadecimal digits from 00 to FF. Displays 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 error code. Refer to the following

12、table for the details. The error history can be switched by rotating the AMS knob. Mode 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 error history, After pressing the AMS butto

13、n 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 and play are performed. Mode which erases

14、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 AMS button and “tm refresh?” is displayed, press the YES butto

15、n 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. Table of Error Codes Error Code E00 E01 E02 E03 E04 E05 E06 E07 E08 E09

16、 E0A FOK has deviated Cannot focus (Servo has deviated) Recording retry Recording retry error Playback retry error (Access error) Play retry error (C2 error) Details of ErrorError CodeDetails of Error 收音机爱好者资料库 Ra d i o Fa n s .CN 4 CAUTION Use of controls or adjustments or performance of procedures

17、 other than those specified herein may result in hazardous ra- diation exposure. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing Keep the temperature of solderin

18、g iron around 270C during 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. Laser component in this product is capable of emitting radiation exceeding the limit for Cla

19、ss 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. CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended

20、 by the equipment manufacturer. Discard used batteries according to manufactures instructions. ADVARSEL! Lithiumbatteri - Eksplosionsfare ved fejlagtig hndtering. Udskiftning m kun ske med batteri af samme fabrikat og type. Levr det brugte batteri tilbage til leverandren. ADVARSEL Eksplosjonsfare ve

21、d feilakting skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier katterier kasseres i henhold til fabrikantens VARNIG Explosionsfara vid felaktigt batteribyte. Anvnd samma batterityp eller en likvrdig typ som rekommenderas av apparat

22、tillverkaren. Kassera anvnt batteri enligt gllande freakrifter. VAROITUS Parist voi rjht, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hvit kytetty paristo valmistajan ohjeiden mukaisesti. SAFETY-RELATED COMPONENT WARNING ! COMPONENTS IDENTI

23、FIED 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 PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LE

24、S COMPOSANTS IDENTIFIS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PICES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPLMENTS PUBLIS PAR SONY. 5 4-216-349-0 US model 4-

25、216-349-1 Canadian model 4-216-349-2 AEP, UK model 4-216-349-3 Australian model 4-216-349-4 Singapore model 4-216-349-5 Hong Kong model MODEL IDENTIFICATION BACK PANEL SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety checks before releasing the set to th

26、e 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 The AC leakage from any exposed metal part to earth Ground and from all exposed metal parts to any exposed metal part having a

27、return to chassis, must not exceed 0.5 mA (500 microampers). Leak- age 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 milliammeter. T

28、he 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” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex

29、amples of a pas- sive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2V AC range are suitable. (See Fig. A) Fig. A. Using an AC voltmeter to check AC leakage. TABLE OF CONTENTS 1. SERVICING NOTE. 6 2. GENERAL. 11 3. DISASSEMBLY 3-1. Case and Front Panel .12 3-2. Sl

30、ider (Cam). 12 3-3. Base Unit (MBU-5A) and BD Board.13 3-4. SW Board and Loading Motor (M103) .13 4. TEST MODE. 14 5. ELECTRICAL ADJUSTMENTS.19 6. DIAGRAMS 6-1. Circuit Boards Location .28 6-2. Block Diagrams BD Section.29 Main Section . 31 6-3. Printed Wiring Board BD Section . 35 6-4. Schematic Di

31、agram BD Section (1/2).37 Schematic Diagram BD Section (2/2).39 6-5. Schematic Diagram Main Section (1/2). 41 Schematic Diagram Main Section (2/2). 43 6-6. Printed Wiring Board Main Section .45 6-7. Printed Wiring Board Panel Section . 47 6-8. Schematic Diagram Panel Section . 49 6-9. Schematic Diag

32、ram BD Switch Section .51 6-10. Printed Wiring Board BD Switch Section .51 6-11. IC Block Diagrams.52 6-12. IC Pin Functions.55 7. EXPLODED VIEWS 7-1. Case and Back Panel Section .61 7-2. Front Panel Section . 62 7-3. Mechanism Section (MDM-5A) . 63 7-4. Base Unit Section (MBU-5A). 64 8. ELECTRICAL

33、PARTS LIST. 65 0.15F To Exposed Metal Parts on Set 1.5k AC voltmeter (0.75V) Earth Ground Parts No. 6 SECTION 1 SERVICING NOTE 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 pe

34、rformed 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 signal RF: RF sig

35、nal (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 5 1 6 CN110 RF 5P Connector 6P connector VC 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

36、 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 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 op

37、tical pick-up according to the following procedure. Record Precedure: 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. Rotate the AMS knob to display “Service”, and press the YES button. 3. Rotate the AMS knob to display “lo

38、p.Write”, 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. To select the number : Rotate the AMS knob. To select the digit: Press the AMS knob. 6. When the YES bu

39、tton 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 be

40、come “Iop Write”. 9. Press the REPEAT button to complete. Display Precedure: 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. Rotate the AMS knob to display “Service”, and press the YES button. 3. Rotate the AMS knob to disp

41、lay “lop.Read”. 4. “./#.#” is displayed and the recorded contents are displayed. . : indicates the Iop value labeled on the pick-up. #.#: indicates the Iop value after adjustment 5. To end, press the AMS button or MENU/NO button to display “Iop Read”. Then press the REPEAT button. 8 0.9 mW power Spe

42、cified 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 : For points a, b, and c C1 error : Below 220 AD error : Below 2 Error rate chec

43、k 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 : Below 2 Unsatisfactory if displayed as T= (#) NG” NG (, # are both arbitrary numb

44、ers) 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 the procedures are described in “5 Electrical Adjustments”. Laser power check (5-6-2 : See page 21) Traverse check (5-6-

45、3 : See page 21) Focus bias check (5-6-4 : See page 22) C PLAY check (5-6-5 : See page 22) Self-recording/playback check (REC/PLAY) (5-6-6 : See page 22) TEMP check (Temperature compensation offset check) (5-6-1 : See page 21) 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 always unsatisfactor