SONY mdssd1_11 维修电路图.pdf

1 MICROFILM MDS-SD1 SPECIFICATIONS SERVICE MANUAL MINIDISC DECK Model Name Using Similar MechanismMDS-JE520 MD Mechanism TypeMDM-5A Base Unit TypeMBU-5A Optical Pick-up TypeKMS-260A/J1N AEP Model UK Model E Model US and foreign patents licensed from Dolby Laboratories Licensing Corporation. MDS-SD1 is the minidisc deck that can be used only with section CMT-SD1/SD3. 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 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 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. 1. While pressing the ENTER/YES button and button, connect the power plug to the outlet, and release the ENTER/YES button and button. 2. “TEMP CHECK” will be displayed. Press the MENU/NO button to display “Check”. 3. Rotate the + knob and when “Service” is displayed, press the ENTER/YES button. 4. Rotate the + knob and display “ERR DP MODE”. 5. Pressing the ENTER/YES button sets the error history mode and displays “total rec”. 6. Select the contents to be displayed or executed using the + knob. 7. Pressing the CD SYNC/MD WM SYNC button will display or execute the contents selected. 8. Pressing the CD SYNC/MD WM SYNC button another time returns to step 5. 9. Pressing the MENU/NO button displays “ERROR DP MODE” and exits the error history mode. 10.To exit the test mode, press the 1/u 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 History No error Disc error. PTOC cannot be read (DISC ejected) Disc 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 1/4 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 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. Displays the total number of errors. 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 table for the details. The error history can be switched by rotating the + 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 CD SYNC/MD WM SYNC button and “er refresh?” is displayed, press the ENTER/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 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 CD SYNC/MD WM SYNC button and “tm refresh?” is displayed, press the ENTER/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. Table of Error Codes Error Code E00 E01 E02 E03 E04 E05 E06 E07 E08 E09 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 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 soldering 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 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. MODEL IDENTIFICATION Specification Label CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended 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 ved 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 apparattillverkaren. 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 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 PUBLISHED BY SONY. PARTS No. 4-212-572-1 4-212-572-2 MODEL AEP, UK model SP, HK model Abbreviation HK: Hong Kong model SP: Singapore model Parts No. 5 TABLE OF CONTENTS 1. SERVICING NOTE. 6 2. GENERAL. 15 3. DISASSEMBLY 3-1. Glass ASSY. 16 3-2. Front Panel . 16 3-3. Slider (CAM) . 17 3-4. Base Unit and BD Board . 17 3-5. SW Board and Loading Motor (M103) . 18 4. TEST MODE. 19 5. ELECTRICAL ADJUSTMENTS.23 6. DIAGRAMS 6-1. Circuit Boards Location. 32 6-2. Block Diagrams BD Section.33 Main Section . 35 6-3. Printed Wiring Board BD Section . 39 6-4. Schematic Diagram BD (1/2) Section .41 6-5. Schematic Diagram BD (2/2) Section .43 6-6. Schematic Diagram Main (1/2) Section . 45 6-7. Schematic Diagram Main (2/2) Section . 47 6-8. Printed Wiring Board Main Section . 49 6-9. Schematic Diagram Panel Section . 51 6-10. Printed Wiring Board Panel Section .53 6-11. Schematic Diagram Connector Section . 55 6-12. Printed Wiring Board Connector Section .57 6-13. Schematic Diagram BD Switch Section . 59 6-14. Printed Wiring Board BD Switch Section . 59 6-15. Schematic Diagram Encoder Section . 60 6-16. Printed Wiring Board Encoder Section . 60 6-17. IC Block Diagrams .61 6-18. IC Pin Functions .64 7. EXPLODED VIEWS 7-1. Case and Back Panel Section . 67 7-2. Front Panel Section . 68 7-3. Mechanism Section (MDM-5A) . 69 7-4. Base Unit Section (MBU-5A). 70 8. ELECTRICAL PARTS LIST. 71 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 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 (Check the deterioration of the optical pick-up laser) TEO : TRK error signal (Traverse adjustment) RF: RF signal (Check jitter) VC: Reference level for checking the signal RF VC TEOMDM-3 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 PICKUP AND NON-VOLATILE MEMORY (IC171 OF BD BOARD) ARE REPLACED The IOP value labeled on the 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 pick-up or non-volatile memory (IC171 of BD board), record the IOP value on the pick-up according to the following procedure. Record Precedure: 1. While pressing the ENTER/YES button and button, connect the power plug to the outlet, and release the ENTER/YES button and button. 2. “TEMP CHECK” will be displayed. Press the MENU/NO button to display “Check”. 3. Rotate the + knob to display “Service”, and press the ENTER/YES button. 4. Rotate the + knob to display “lop.Write”, and press the ENTER/YES button. 5. The display becomes “Ref=.” ( is an arbitrary number) and the numbers which can be changed will blink. 6. Input the IOP value written on the optical pick-up. To select the number : Rotate the + knob. To select the digit: Press the CD SYNC/MD WM SYNC button. 7. When the ENTER/YES button is pressed, the display becomes “Measu=.” ( is an arbitrary number). 8. As the adjustment results are recorded for the step 6 value. Leave it as it is and press the ENTER/YES button. 9. “Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop Write”. 10.Press the 1/u button to complete. “Standby” will be displayed. Display Precedure: 1. While pressing the ENTER/YES button and button, connect the power plug to the outlet, and release the ENTER/YES button and button. 2. “TEMP CHECK” will be displayed. Press the MENU/NO button to display “Check”. 3. Rotate the + knob to display “Service”, and press the ENTER/YES button. 4. Rotate the + knob to display “lop.Read”. 5. “./#.#” is displayed and the recorded contents are displayed. . : indicates the Iop value labeled on the pick-up. #.#: indicates the Iop value after adjustment 6. To end, press the CD SYNC/MD WM SYNC button or MENU/NO button to display “Iop Read”. Then press the 1/u button to display “Standby”. 8 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 : For points a, b, and c C1 error : Below 220 AD error : Below 2 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 : Below 2 Unsatisfactory if displayed as T= (#) NG” NG (, # are both arbitrary numbers) 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 25) Traverse check (5-6-3 : See page 25) Focus bias check (5-6-4 : See page 26) C PLAY check (5-6-5 : See page 26) Self-recording/playback check (REC/PLAY) (5-6-6 : See page 26) TEMP check (Temperature compensation offset check) (5-6-1 : See page 25) 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 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, 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 specified values for adjustments. 9 FORCED RESET The system microprocessor can be reset in the following procedure. Use these procedure when the uni