sony_MDS-LSA1_service_manual 维修电路图.pdf

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1、1 MDS-LSA1 SPECIFICATIONS SERVICE MANUAL MINIDISC DECK Model Name Using Similar MechanismNEW MD Mechanism TypeMDM-7X2B Optical Pick-up TypeKMS-262A/J1N AEP Model UK Model SystemMiniDisc digital audio system DiscMiniDisc LaserSemiconductor laser ( = 780 nm) Emission duration: continuous Laser outputL

2、ess than 44.6 W* * 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 diodeMaterial: GaAlAs Revolutions (CLV)400 rpm to 900 rpm Error correctionACIRC (Advanced Cross Interleave Reed Solomon Code) Sampling f

3、requency44.1 kHz CodingATRAC (Adaptive TRansform Acoustic Coding)/ATRAC3 Modulation systemEFM (Eight-to-Fourteen Modulation) Number of channels2 stereo channels Frequency response5 to 20,000 Hz 0.3 dB Signal-to-noise ratioOver 100 dB during playback Wow and flutter Inputs/outputs i.LINK S200Jack typ

4、e: 4-pins to 4-pins General Power requirements230 V AC, 50/60 Hz Power consumption18 W Dimensions (approx.)430 x 70 x 315 mm (w/h/d) incl. projecting parts and controls Mass (approx.)4.4 kg Supplied accessories Design and specifications are subject to change without notice. i.LINK connecting cable (

5、1) Remote commander (remote) (1) Below measurable limit US and foreign patents licensed from Dolby Laboratories Licensing Corporation. 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 erro

6、rs 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 usi

7、ng the Self- Diagnosis Function (Error History Display Mode)”. Self-Diagnosis Function The decks self-diagnosis function automatically checks the condition of the MD deck when an error occurs, then issues a code and an error message on the display. If the code and message alternate, find them in the

8、 following table and perform the indicated countermeasure. Should the problem persist, consult your nearest Sony dealer . Code/MessageCause/Remedy C11/Pr otectedThe inserted MD is record-protected. , Take out the MD and close the record-protect slot (page 13). C12/Cannot CopyAn attempt was made to p

9、lay a disc that is not compatible with this deck (MD data disc, etc.). , Replace the disc. C13/REC ErrorThe 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

10、 in quality. , Replace the disc and repeat the recording procedure. C13/Read ErrorThe deck could not read the TOC on the MD properly. , Take out the MD and insert it again. C14/T oc ErrorThe deck could not read the TOC on the MD properly. , Insert another disc. , If possible, erase all the tracks on

11、 the MD (page 29). C41/Cannot CopyThe digitally dubbed material cannot be recorded digitally (page 14). C71/Din UnlockThe sporadic appearance of this message is caused by the digital signal being recorded. This will not affect the recording. While recording from a digital component connected through

12、 the i.LINK S200 connector , the digital connecting cable was unplugged or the digital component turned off. , Connect the cable or turn the digital component back on. C78:03/LOOP CONNECTThe i.LINK connection is looped. , Check the connection (see page 39). C78:04/NO SIGNALThe selected component is

13、turned on, but no signal is not output from the component. , Check the selected component. C78:11/C78:12/CANNOT LINCThe deck cannot establish a LINC with a component because of an existing LINC between the deck and another component. , Cancel the LINC between the deck and the other component. C78:15

14、/BUS FULLThe signal bus within the i.LINK configuration is full and no more signals can be output from the deck. C78:21/NO SIGNALThe deck and the selected component are connected correctly, but no signal from the component is input to the deck. , Check the selected component. C78:22/NO SIGNALThe for

15、mat of the input signal is not supported. C78:23/NO SIGNALThe selected component is not turned on. , Verify that the component is on. C78:31/NO SIGNALThe communication between the deck and the selected component is unstable. Or, the format of the input signal is not supported. , Check the condition

16、and the signal format of the selected component. C78:32/NEW CONNECTWhile recording, a new component is connected within the i.LINK configuration, or a mains lead or an i.LINK connecting cable of the component within the configuration is connected or disconnected. , Do not connect or disconnect any m

17、ains leads or i.LINK connecting cables during recording. If you do, recording may not be done correctly. E0001/MEMORY NGThere is an error in the internal data that the deck needs in order to operate. , Consult you nearest Sony dealer. E0101/LASER NGThere is a problem with the optical pick-up. , Cons

18、ult you nearest Sony dealer . 收音机爱好者资料库 Ra d i o Fa n s .CN 3 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

19、 not to enter other modes by mistake. If you set other modes accidentally, press the POWER “X2” button to exit the mode. 1. While pressing the . button and x button, connect the power plug to the outlet, and release the . button and x button. When the test mode is set, “Check” will be displayed. 2.

20、Press the . or button and when “Service” is displayed, press the 7 button. 3. Press the . or button and display “Err Display”. 4. Pressing the 7 button sets the error history mode and displays “op rec tm”. 5. Select the contents to be displayed or executed using the . button. 6. Pressing the POWER b

21、utton will display or execute the contents selected. 7. Pressing the POWER button another time returns to step 4. 8. Pressing the x button displays “Err Display” and exits the error history mode. 9. To exit the test mode, press the POWER “X2” button. The unit sets into the STANDBY state, the disc is

22、 ejected, and the test mode ends. 10.If the unit fails to enter STANDBY mode, remove the AC cord from its socket, insert the AC cord into the socket again, turn on the power, and then check to make sure that the unit has exited from test mode. NOTE The MDS-LSA1 is designed so that a number of functi

23、ons which may be performed in test mode may be performed by clicking a single button. Switching between functions Pressing the INPUT button causes the display to change as indicated below. Hidden t “X2” The functions performed by each button change in accordance with the DISPLAY mode. Note that the

24、following notation is used herein: POWER . Press the POWER button when HIDDEN. POWER “X2”. Press the POWER button while “X2” is lit. 收音机爱好者资料库 Ra d i o Fa n s .CN 4 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

25、history retry adrs er refresh op change spdl change History Displays the total 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

26、 1/4 of the actual recording time. Displays the total playback time. When the total 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 min

27、ute, displays the hour and minute When less than 1 minute, displays “Under 1 min” 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 fr

28、om 00 to FF. Displays the total number of errors Displays “total xx”. This is displayed 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

29、error history number using the . button. Displays the past five retry addresses. Displays “xx ADRS yyyy”, xx is the history number, yyyy is the cluster with the retry error. Select the error history number using the . button. Mode for erasing the error and retry address histories Procedure 1. Press

30、the . button when displayed as “er refresh”. 2. Press the 7 button when 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 tha

31、t the mechanism is normal. Mode for erasing the total time of op rec tm, op play tm. These histories are based on the time of replacement of the optical pick-up. If the optical pick-up has been replaced, perform this procedure and erase the history. Procedure 1. Press the . button when displayed as

32、“op change”. 2. Press the 7 button when the display changes to “op change?”. When “Complete!” is displayed, it means erasure has completed. Mode for erasing the 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, pe

33、rform this procedure and erase the history. Procedure 1. Press the . button when displayed as “spdl change” 2. Press the 7 button when the display changes to “spdl change?” When “Complete!” is displayed, it means erasure has completed. 5 Description Table of Error Codes Error Code 10 12 20 21 22 23

34、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 not start playback Error in sector Retry cause gene

35、rated 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. TABLE OF CONTENTS 1. SERVICING NOTES .6 2. GENERAL. 12 3. DISASSEMBLY 3-1. Case (Top) .17

36、 3-2. MD Mechanism Deck . 18 3-3. Base (Front) Assy, Panel . 18 3-4. Clip Board and Main Board. 19 3-5. Trans Board. 19 3-6. Holder Assy. 20 3-7. Over Write Head . 20 3-8. Optical pick-up (MD) (KMS-262A/J1N). 21 3-9. BD Board . 21 4. TEST MODE. 22 5. ELECTRICAL ADJUSTMENTS.30 6. DIAGRAMS 6-1. Circui

37、t Boards Location .41 6-2. Block Diagrams BD Section.42 Main Section . 43 6-3. Printed Wiring Board BD Section . 45 6-4. Schematic Diagram BD Section (1/2) .46 6-5. Schematic Diagram BD Section (2/2) .47 6-6. Printed Wiring Board Main Section (Side A) .48 6-7. Printed Wiring Board Main Section (Side

38、 B) .49 6-8. Schematic Diagram Main Section (1/3) . 50 6-9. Schematic Diagram Main Section (2/3) . 51 6-10. Schematic Diagram Main Section (3/3) . 52 6-11. Printed Wiring Board Power Section . 53 6-12. Printed Wiring Board Panel Section .54 6-13. Schematic Diagram Panel Section . 55 6-14. IC Block D

39、iagrams.56 6-15. IC Pin Functions.59 7. EXPLODED VIEWS 7-1. Panel Section.70 7-2. Chassis Section .71 7-3. MD Mechanism Section-1 (MDM-7X2B).72 7-4. MD Mechanism Section-2 (MDM-7X2B).73 8. ELECTRICAL PARTS LIST. 74 6 SECTION 1 SERVICE NOTES This appliance is classified as a CLASS 1 LASER product. Th

40、e CLASS 1 LASER PRODUCT 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

41、 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 o

42、n 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 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

43、 difference generated by 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 wi

44、th care. NOTES ON LASER 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 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. This cautio