sony_MDCC-2000_service_manual 维修电路图.pdf

MDCC-2000 US ModelSERVICE MANUAL MD CONFER-CORDER Sony Corporation Personal Audio Company Shinagawa Tec Service Manual Production Group 9-873-111-12 2001G1600-1 2001.7 SPECIFICATIONS Ver 1.1 2001. 07 US and foreign patents licensed from Dolby Laboratories Licensing Corporation Laser diode properties Material: GaAlAs Wavelength: 780 nm Emission duration: Continuous Laser output: Less than 44.6 W (This output is the value measured at a distance of about 200 mm from the lens surface on the optical pick-up block with 7 mm aperture.) Revolutions 400 rpm to 1800 rpm (CLV) Error correction Advanced Cross Interleave Reed Solomon Code (ACIRC) Sampling frequency 44.1 kHz Coding ATRAC 3 (Adaptive TRansform Acoustic Coding 3) Modulation system EFM (Eight to Fourteen Modulation) Number of channels 2 or 4 monaural channels Frequency response 5010,000 Hz Speaker Approx. 5.0 cm (2 inches) dia. Power output 600 mW (at 10% distortion) Input MIC: Canon XLR-3-31 type 0.44 mV (-65 dB) LINE IN 1-4: mini jack 0.49 V (-4 dB) Output EAR (minijack) for 8300 earphones LINE OUT 1,2 (minijack) 0.22 V (-11 dB) load inpedance 47 k ADA (minijack) 0.22 V (-11 dB) load inpedance 10 k PA (minijack) 0.22 V (-11 dB) load inpedance 47 k PC (9 pin D-sub) DISPLAY (modular) Other connector CONTROL UNIT connector REMOTE jack Power requirements 12 V DC DC IN 12V jack accepts the supplied AC power adaptor for use on 120 V AC, 60 Hz Dimensions Approx. 320 x 280 x 118 mm (w/h/d) (1258 x 1118 x 434 inches) including projecting parts and controls Mass Approx. 4.5 kg (9 lb 15 oz) Accessories supplied AC power adaptor (1) AC power cord (1) Sony CR2032 lithium battery (1) MiniDisc (2) Design and specifications are subject to change without notice. Model Name Using Similar MechanismNEW MD Mechanism TypeCCMD-2000 Optical Pick-up Mechanism TypeKMS-250A 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MDCC-2000 1. GENERAL 3 2. DISASSEMBLY 2-1.Cabinet (Upper) Section6 2-2.Switch Section 7 2-3.LCD Section 7 2-4.I/O Section 8 2-5.Volume Section 8 2-6.Main Board 9 2-7.Connector Section 9 2-8.Door 10 2-9.MD Board 10 2-10. Base Unit Section 11 2-11. BUM-F1 Board 11 2-12. REC/PB Head Assy (HR901) Section 12 2-13. Holder Assy, Cartridge Section 12 2-14. Holder Assy, Cartridge Installation 13 2-15. Optical Pick-up (KMS-250A) Section 13 3. TEST MODE 14 4. ELECTRICAL ADJUSTMENTS 27 5. DIAGRAMS 5-1.Circuit Boards Location 29 5-2.Block Diagrams MD Section 30 I/O Section 31 FIFO Section 32 CPU Section 33 LCD Section 34 5-3.Printed Wiring Board MD Section 35 5-4.Schematic Diagram MD Section (1/4) 36 5-5.Schematic Diagram MD Section (2/4) 37 5-6.Schematic Diagram MD Section (3/4) 38 5-7.Schematic Diagram MD Section (4/4) 39 5-8.Schematic Diagram BUM Section 40 5-9.Printed Wiring Board BUM Section 41 5-10. Schematic Diagram Main Section (1/12) 42 5-11. Schematic Diagram Main Section (2/12) 43 5-12. Schematic Diagram Main Section (3/12) 44 5-13. Schematic Diagram Main Section (4/12) 45 5-14. Schematic Diagram Main Section (5/12) 46 TABLE OF CONTENTS 5-15. Schematic Diagram Main Section (6/12) 47 5-16. Schematic Diagram Main Section (7/12) 48 5-17. Schematic Diagram Main Section (8/12) 49 5-18. Schematic Diagram Main Section (9/12) 50 5-19. Schematic Diagram Main Section (10/12) 51 5-20. Schematic Diagram Main Section (11/12) 52 5-21. Schematic Diagram Main Section (12/12) 53 5-22. Printed Wiring Board Main Section 54 Main Section (1/4) 55 Main Section (2/4) 56 Main Section (3/4) 57 Main Section (4/4) 58 5-23. Printed Wiring Board Mute Section 59 5-24. Schematic Diagram AUDIO Section 60 5-25. Printed Wiring Board Audio Section 61 5-26. Schematic Diagram Level Meter Section 62 5-27. Printed Wiring Board Level Meter Section 63 5-28. Schematic Diagram LCD Section 64 5-29. Printed Wiring Board LCD Section 65 5-30. Schematic Diagram Switch Section 66 5-31. Printed Wiring Board Switch Section 67 5-32. Schematic Diagram Foot Switch Section 68 5-33. Printed Wiring Board Foot Switch Section 69 5-34. Schematic Diagram Volume/Serial I/O Section 70 5-35. Printed Wiring Board Volume/Serial I/O Section 71 5-36. Schematic Diagram Line Selector Section 72 5-37. Printed Wiring Board Line Selector Section 73 5-38. IC Pin Function Description 74 5-39. IC Block Diagrams 77 6. EXPLODED VIEWS 6-1.Cabinet Section 85 6-2.Key Section 86 6-3.LCD Section 87 6-4.Connector Section 88 6-5.MD Mechanism Section (CCMD-2000) (Deck-A/Deck-B) 89 7. ELECTRICAL PARTS LIST 90 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. Flexible Circuit Board Repairing Keep the temperature of the 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. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MDCC-2000 CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. 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 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 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. Unleaded solder Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.) : LEAD FREE MARK Unleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! Strong viscosity Unleaded solder is more viscous (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MDCC-2000 SECTION 1 GENERAL 4 Introduction Location and Function of Controls For details, refer to the pages indicated in ( ). 1 Built-in speaker 2 LCD CONTRAST control Adjusts the contrast of the display. 3 MONITOR VOL control 4 DECK A button (17, 18) 5 DISPLAY MODE A button (21) 6 MONITOR select buttons (ALL/1/2/3/4) 7 SEARCH selector (17, 18) (INDEX SEARCH/TIME SEARCH) 8 POINT SEARCHPOINT button (deck A) (20) 9 POINT SEARCHRESET button (deck A) (20) q; Number buttons qa SEARCH button (17, 18) qs INDEX button (14) qd MD insertion slot (deck A) qf Z EJECT button (deck A) qg LCD display qh LINE OUT 1 select buttons (ALL/1/2/3/4) (31) qj LINE OUT 2 select buttons (ALL/1/2/3/4) (31) qk PA/ADA selector (OFF/ON ADA/PA) (30) Switches the output to the PA/ADA jacks on or off. ql STANDBY switch w; DECK B button (17, 18) wa DISPLAY MODE B button (21) ws POINT SEARCHRESET button (deck B) (20) wd POINT SEARCHPOINT button (deck B) (20) wf Z EJECT button (deck B) wg MD insertion slot (deck B) wh FUNCTION button wj DELETE button wk Arrow buttons wl ENTER button e; Jog dial ea x STOP button (deck A) es z REC button (deck A) ed m REW/BS button (deck A) ef u PLAY/PAUSE button (deck A) eg M FF/FS button (deck A) eh x STOP button (deck B) ej z REC button (deck B) ek m REW/BS button (deck B) el u PLAY/PAUSE button (deck B) r; M FF/FS button (deck B) This section is extracted from instruction manual. 5 MDCC-2000 6 Introduction 1 A: display (deck A) Indicates the disc inserted in deck A or the status of deck A as follows: BLANK: a blank disc NO DISC: no disc PB ONLY: a commercially available recorded disc (for playback only) PROTECTED: a protected disc (3) RECORDED: a recorded disc 2 TIME display (deck A) Indicates the recorded time at the current location for each index item. It blinks during time search. (18) 3(copied) display (deck A) Indicates that a disc digitally copied with the Copy function is inserted. (26) 4 INDEX counter (deck A) Lights up when a disc is inserted. Blinks during an index search. (17) 5 END display (deck A) This shows the end of the disc. 6 Disc status display (deck A) Indicates the status of the disc with pictures. 7 DECK A/DECK B display Indicates various data by characters and various error messages. (38) 8 Disc position display Indicates the current playback/recording location on the disc by a white box. Already recorded parts are indicated in black. The further it is to the right, the closer the disc is to the end. Depending on the condition of the disc, the black part might not reach the far right even if the disc is full. 9 DATE/TIME display Indicates the current date and time. 0 B: display (deck B) Indicates the same contents as deck A. qa TIME display (deck B) qs(copied) display (deck B) qd Disc status display (deck B) qf END display (deck B) qg INDEX counter (deck B) qh REC MODE display Indicates the recording mode (2ch/4ch) currently selected. Display Window (Information screen) 1 2 3 4 5 6 7 8 9 0 qa qs qd qf qg qh 8 Setting Up Setting the Date and Time 1Insert the key and set it to ON. You will see the initial screen in a few seconds. 2Press FUNCTION. 3Select CALENDAR,CLK using the jog dial or the arrow buttons, and press ENTER. You will see the CALENDAR or CLOCK INPUT screen. 4Select CALENDAR using the jog dial or the arrow buttons, and press ENTER. You will see the SET MONTH (mmm) and DAY (dd) and YEAR (yy) screen with the name of a month blinking. 5Set the month using the jog dial or J/j buttons, and press ENTER. You will see “01” of the day blinking. 6Set the day and the year in the same way as step 5. When the year is set, the display will return to the information screen. 1 2 3, 4, 5, 6 Setting the Date blink To record the date and time etc. on MiniDiscs when you record, be sure to set the Date and Time. Note You cannot use the K/k buttons when setting the month, day and year. 9 Setting Up 1Carry out steps 2 and 3 of “Setting the Date”. You will see the CALENDER or CLOCK INPUT screen. 2Select CLOCK using the jog dial or the arrow buttons, and press ENTER. You will see the SET HOUR (hh) and MINUTE (mm) screen with the hours and AM/PM blinking. 3Set the hour using the jog dial or J/j buttons, and press ENTER. You will see the minutes blinking. 4Set the minutes in the same way as step 3. The display will return to the information screen and the clock will start. blink Note You cannot use the K/k buttons when setting the hour and minute. Setting the Time 2, 3, 4 5 Introduction Left side Rear raCONTROL UNIT connector (32) rsTRANSCRIBE selector (33) rdREMOTE jack (15) rfEAR jack (16) rgPC connector (RS-232C type) rhDISPLAY connector Used for connection of an external counter unit. rjADA jack Allows the unit to be connected to a separately purchased amplifier system. rkPA (public address) jack (30) rlLINE OUT jacks t;LINE IN jacks taDC IN 12V tsMicrophone connectors (Canon XLR-3-31 type) 6 MDCC-2000 SECTION 2 DISASSEMBLY The equipment can be removed using the following procedure. Disassemble the unit in the order as shown below. Note : Follow the disassembly procedure in the numerical order given. 4Connector (CN9102) 3Four claws Cabinet (upper) assy 1Two screws (+PSW4 16) 2Three screws (+PSW4 16) 2-1. CABINET(UPPER) SECTION SetCabinet (upper) sectionSwitch sectionLCD sectionI/O section Door MD board Base unit sectionBUM-F1 boardREC/PB head assy (HR901) sectionHolder assy, cartridge section Holder assy, cartridge installationOptical pick-up (KMS-250A) section Main board Volume section Connector section 7 MDCC-2000 qaConnector (CN9301) 8Connector (CN9401) 1Flat cable (90mm) 7SWITCH board q;Selector bracket qgLINE SELECTOR board qsButton (5 GANG) 9Three screws (+PS 3 6) qfScrew (+PSW 3 6) 3Key switch block assy 2Nine screws (+PS 3 6) 4Eight screws (STEP M2) 5Eight screws (STEP M2) 6Five screws (+PSW 3 6) qdFour screws (+PS 3 6) 3Cable, flexible flat (20 core) 1Four screws (+PS 2 8) 9three screws (+PS 3 6) 0Four screws (+PSW 3 6) qsConnector (CN4001) qaLCD bracket 5Holder (LCD) 4Claws qdLCD board 8Light unit, back 6LCD 7 2Plat (LCD), transparent 2-2. SWITCH SECTION 2-3. LCD SECTION 8 MDCC-2000 1Cable, flexible flat (17 core) 5Cable, flexible flat (17 core) 4MD mechanism (Deck-A) 7MD mechanism (Deck-B) 8Connector(CN9101) qaConnector (CN7001) 9Five screws (+PSW 3 8) 3Three screws (+PS 3 6) 6Four screws (+PS 3 6) 2Screw (+PS 3 6) qfSERIAL I/O board q;AUDIO I/O board qsTwo screws qdScrew (M2 3) 1Connector(CN6002) qsConnector (CN8001) 2Connector (CN9201) qdConnector (CN9001) 8VOLUME board 5Knob(VOL) 6Two nuts (PUSH 1.5) 4Level meter blacket qaLEVEL METER board FOOT SWITCH boardqh qfTwo screws (+PSW 3 6) qgScrew (+PSW 3 8) 3Three screws (+PS 3 6) 9Two screws (+PS 3 6) 0Screw (+PSW 3 6) 7Two spacers (CABINET UPPER) 2-4. I/O SECTION 2-5. VOLUME SECTION 9 MDCC-2000 4Three screws (M 2 3) 5Indication plate (CANON) 6Sixteen screws (M 2 6) 1Three screws (M 2 3) 3Shield plate 8 Sheet, Insulating 2Three screws (M 2 3) 7Eight connectors (RECEPTACLE) 3p Cabinet (lower) 4Two flexible flat cable (17 core) 5Four connectors (CN101,CN102,CN103,CN104) 3Connector (CN1007) 6Connector(CN111) 1 2 7Four screws (+PSW 3 6) 8MAIN board 2-6. MAIN BOARD 2-7. CONNECTOR SECTION 10 MDCC-2000 1Frexible wire (18 core, CN5) 2Frexible board (CN3) 3Frexible board (CN1) 5Two screws (M 2 3) 4Two screws (M 2 3) 6MD board 2-8. DOOR 2-9. MD BOARD 3Door spring, door return 1 Release the hook. 2 Release the boss. 11 MDCC-2000 1Screw (toothd lock M 2 3.5) 3Two screws (step) 4Two screws (step) 5Base unit 2Lug, 2 4Two screws (precision +M 1.7 2.2) 5claw 6claw 7BUM-F1 board 1Plam flexible board (CN303) 2Frexible board (CN304) 3Flexible board (CN302) 2-10. BASE UNIT SECTION 2-11. BUM-F1 BOARD 12 MDCC-2000 6Two screws (M 1.7 2.8) 7removed hook 8REC/PB