sony_MDS-JE470_service_manual 维修电路图.pdf

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1、MDS-JE470 SPECIFICATIONS SERVICE MANUAL MINIDISC DECK Model Name Using Similar MechanismMDS-S50 MD Mechanism TypeMDM-7A Optical Pick-up TypeKMS-260B/260E US Model Canadian Model AEP Model UK Model E Model Australian Model US and foreign patents licensed form Dolby Laboratories Licensing Corporation.

2、 SystemMiniDisc digital audio system DiscMiniDisc LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Laser outputMAX 44.6 W1) 1)This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture. Laser diodeMateri

3、al: GaAlAs Revolutions (CLV)400 rpm to 900 rpm Error correctionACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling frequency44.1 kHz CodingATRAC (Adaptive TRansform Acoustic Coding)/ATRAC 3 Modulation systemEFM (Eight-to-Fourteen Modulation) Number of channels2 stereo channels Frequency res

4、ponse5 to 20,000 Hz 0.3 dB Signal-to-noise ratio Over 96 dB during play Wow and flutterBelow measurable limit Inputs ANALOG INJack type: phono Impedance: 47 kilohms Rated input: 500 mVrms Minimum input: 125 mVrms DIGITAL OPTICAL INConnector type: square optical Impedance: 660 nm (optical wave length

5、) Outputs ANALOG OUTJack type: phono Rated output: 2 Vrms (at 50 kilohms) Load impedance: over 10 kilohms Continued on next page Ver 1.0 2001. 05 9-873-891-11 2001E0200-1 2001.5 Sony Corporation Home Audio Company Shinagawa Tec Service Manual Production Group 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MDS-JE47

6、0 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 follo

7、wing 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-d

8、iagnosis 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. Self-diagnosis function The decks self-diagnos

9、is function automatically checks the condition of the MD deck when an error occurs, then issues a three- or five-digit code and an error message on the display. If the code and message alternate, find them in the following table and perform the indicated countermeasure. Should the problem persist, c

10、onsult your nearest Sony dealer. Three- or five- digit code/ Message Cause/Remedy C11/Protected The inserted MD is record-protected. , Take out the MD and close the record- protect slot. C12/Cannot Copy You tried to record a CD with a format that the external device connected to the deck does not su

11、pport, such as CD-ROM or video CD. , Remove the disc and insert a music CD. C13/REC Error The recording was not made properly. , Set the deck in a stable surface, and repeat the recording procedure. The inserted MD is dirty (with smudges, fingerprints, etc.), scratched, or substandard in quality. ,

12、Replace the disc and repeat the recording procedure. C13/Read Error The deck could not read the TOC on the MD properly. , Take out the MD and insert it again. C14/Toc Error The deck could not read the TOC on the MD properly. , Insert another disc. , If possible, erase all the tracks on the MD. C41/C

13、annot Copy The sound source is a copy of commercially available music software, or you tried to record a CD-R (Recordable CD). , The Serial Copy Management System prevents making a digital copy . You cannot record a CD-R. C71/Din Unlock The sporadic appearance of this message is caused by the digita

14、l signal being recorded. This will not affect the recording. While recording from a digital component connected through the DIGITAL IN connector, the digital connecting cable was unplugged or the digital component turned off. , Connect the cable or turn the digital component back on. E0001/ MEMORY N

15、G There is an error in the internal data that the deck needs in order to operate. , Consult your nearest Sony dealer. E0101/ LASER NG There is a problem with the optical pickup. , The optical pick-up may have failed. Consult your nearest Sony dealer. Three- or five- digit code/ Message Cause/Remedy

16、General Power requirements U.S.A. and Canadian models: 120 V AC, 60Hz European model:230 V AC, 50/60Hz Australian model:240 V AC, 50/60Hz Hong Kong model:220 240 V AC, 50/60Hz Other models:110 120/220 240 V AC, 50/60Hz Adjustable with voltage selector Power consumption 14 W (0.5 W in standby mode) D

17、imensions (approx.)430 X 95 X285 mm (w/h/d) incl. projecting parts and controls Mass (approx.) 3.0 kg Supplied accessories Audio connecting cords (2) Optical cable (1) Remote commander (remote) (1) R6 (size-AA) batteries (2) US and foreign patents licensed from Dolby Laboratories. Design and specifi

18、cations are subject to change without notice. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MDS-JE470 ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS Selecting the Test Mode Display op rec tm op play tm spdl rp tm retry err total err err history retry adrs er refresh tm change op change History Displays the total

19、recording time. When the total recording time is more than 1 minute, displays the hour and minute When less than 1 minute, displays “Under 1 min” The display time is the time the laser is set to high power, which is about 1/4 of the actual recording time. Displays the total playback time. When the t

20、otal playback time is more than 1 minute, displays the hour and minute When less than 1 minute, displays “Under 1 min” Displays the total rotating time of the spindle motor. When the total rotating time is more than 1 minute, displays the hour and minute When less than 1 minute, displays “Under 1 mi

21、n” Displays the total number of retry errors during recording and playback Displays “r xx p yy”. xx is the number of errors during recording. yy is the number of errors during playback. This is displayed in hexadecimal from 00 to FF. Displays the total number of errors Displays “total xx”. This is d

22、isplayed in hexadecimal from 00 to FF. Displays the past ten errors. Displays “0 x ErrCd”. X is the history number. The younger the number, the more recent is the history (00 is the latest). is the error code. Select the error history number using the lAMSL knob. Displays the past five retry address

23、es. Displays “xx ADRS yyyy”, xx is the history number, yyyy is the cluster with the retry error. Select the error history number using the lAMSL knob. Mode for erasing the error and retry address histories Procedure 1. Press the lAMSL knob when displayed as “er refresh”. 2. Press the YES button when

24、 the display changes to “er refresh?”. When “complete!” is displayed, it means erasure has completed. Be sure to check the following after executing this mode. *Data has been erased. *Perform recording and playback, and check that the mechanism is normal. Mode for erasing the total time of recording

25、 and playback Procedure 1. Press the lAMSL knob when displayed as “tm refresh”. 2. Press the YES button when the display changes to “tm refresh?”. When “complete!” is displayed, it means erasure has completed. Mode for erasing the total time of op rec tm, op play tm. These histories are based on the

26、 time of replacement of the optical pickup. If the optical pick-up has been replaced, perform this procedure and erase the history. Procedure 1. Press the lAMSL knob when displayed as “op change”. 2. Press the YES button when the display changes to “op change?”. When “Complete!” is displayed, it mea

27、ns erasure has completed. 1. While pressing the lAMSL knob and x button, connect the power plug to the outlet, and release the lAMSL knob and x button. When the test mode is set, “Check” will be displayed. 2. Rotate the lAMSL knob and when “Service” is displayed, press the YES button. 3. Rotate the

28、lAMSL knob and display “Err Display”. 4. Pressing the YES button sets the error history mode and displays “op rec tm”. 5. Select the contents to be displayed or executed using the lAMSL knob. 6. Pressing the lAMSL knob will display or execute the contents selected. 7. Pressing the lAMSL knob another

29、 time returns to step 4. 8. Pressing the MENU/NO button displays “Err Display” and exits 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 4 MDS-JE470 Description

30、 Table of Error Codes Error Code 10 12 20 21 22 23 24 30 31 40 41 42 43 50 51 Could not load Loading switches combined incorrectly Timed out without reading the top of PTOC Could read top of PTOC, but detected error Timed out without accessing UTOC Timed out without reading UTOC Error in UTOC Could

31、not start playback Error in sector Retry cause generated during normal recording Retried in DRAM overflow Retry occurred during TOC writing Retry aborted during S.F editing Other than access processing, and could not read address. Focus NG occurred and overran. MODEL IDENTIFICATION BACK PANEL Part N

32、o. Abbreviation CND: Canadian model SP: Singapore model HK: Hong Kong model AUS: Australian model MODEL AEP, UK models US model CND model SP models HK model AUS model PARTS No. 4-233-025-0s 4-233-025-1s 4-233-025-2s 4-233-025-3s 4-233-025-4s 4-233-025-5s DisplayHistory spdl change Mode for erasing t

33、he total spdl rp tm time These histories are based on the time of replacement of the spindle motor. If the spindle motor has been replaced, perform this procedure and erase the history. Procedure 1. Press the lAMSL knob when displayed as “spdl change” 2. Press the YES button when the display changes

34、 to “spdl change?” When “Complete!” is displayed, it means erasure has completed. TABLE OF CONTENTS 1. SERVICING NOTES . 5 2. GENERAL. 12 3. DISASSEMBLY 3-1. Disassembly flow. 13 3-2. Upper Case (408226) . 14 3-3. Front Panel Section . 14 3-4. Main Board . 15 3-5. PT Board, VOL-SEL Board (SP model)

35、. 15 3-6. Mechanism Deck Section ( MDM-7A). 16 3-7. Over Light Head (HR901), BD Board . 16 3-8. Holder Assy. 17 3-9. Loading Motor Assy (M103) . 17 3-10. Sled Motor Assy (M102), Slider . 18 3-11. Optical Pick-up. 18 3-12. Spindle Moter Assy (M101). 19 4. TEST MODE .20 5. ELECTRICAL ADJUSTMENTS. 25 6

36、. DIAGRAMS 6-1. Circuit Boards Location . 36 6-2. Block Diagrams BD Section. 38 Main Section . 39 6-3. Printed Wiring Board BD Board . 40 6-4. Schematic Diagram BD Section (1/2) . 41 6-5. Schematic Diagram BD Section (2/2) . 42 6-6. Schematic Diagram Main Section (1/2) . 43 6-7. Schematic Diagram Ma

37、in Section (2/2) . 44 6-8. Printed Wiring Board Main Section . 45 6-9. Printed Wiring Board Display Section . 46 6-10. Schematic Diagram Display Section . 47 6-11. Printed Wiring Board Power Section . 48 6-12. Schematic Diagram Power Section . 49 6-13. IC Block Diagrams. 50 6-14. IC Pin Functions. 5

38、2 7. EXPLODED VIEWS 7-1. Chassis Section . 59 7-2. Front Panel Section . 60 7-3. Mechanism Section-1 (MDM-7A). 61 7-4. Mechanism Section-2 (MDM-7A). 62 8. ELECTRICAL PARTS LIST. 63 5 MDS-JE470 SECTION 1 SERVICE NOTES This appliance is classified as a CLASS 1 LASER product. The CLASS 1 LASER PRODUCT

39、MARKING is located on the rear exterior. Laser component in this product is capable of emitting radiation exceeding the limit for Class 1. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radia- tion exposure. Notes on chip

40、 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

41、the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by

42、 the charged electrostatic load, 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

43、DIODE EMISSION CHECK Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight. 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

44、 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! LES COMPOSANTS IDENTIFS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PISES SONY DONT LES NUMROS SONT DO