sony_MDX-M690_service_manual 维修电路图.pdf

《sony_MDX-M690_service_manual 维修电路图.pdf》由会员分享，可在线阅读，更多相关《sony_MDX-M690_service_manual 维修电路图.pdf（80页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL FM/MW/LW MINI DISC PLAYER AEP Model UK Model SPECIFICATIONS MDX-M690 Ver 1.0 2001.03 9-870-294-11Sony Corporation 2001C0500-1Audio Entertainment Group C 2001.3General Engineering Dept. US and foreign patents licensed from Dolby Laboratories. Model Name Using Similar MechanismMDX-CA680

2、 Base Mechanism TypeMG-164MA-138 Optical Pick-up NameKMS-241C MD Player section Signal-to-noise ratio90 dB Frequency response10 20,000 Hz Wow and flutterBelow measurable limit Tuner section FM Tuning range87.5 108.0 MHz Aerial terminalExternal aerial connector Intermediate frequency10.7 MHz/450 kHz

3、Usable sensitivity8 dBf Selectivity75 dB at 400 kHz Signal-to-noise ratio66 dB (stereo), 72 dB (mono) Harmonic distortion at 1 kHz 0.6 % (stereo), 0.3 % (mono) Separation35 dB at 1 kHz Frequency response30 15,000 Hz MW/LW Tuning rangeMW: 531 1,602 kHz LW: 153 279 kHz Aerial terminalExternal aerial c

4、onnector Intermediate frequency10.7 MHz/450 kHz SensitivityMW: 30 V LW: 40 V Power amplifier section OutputsSpeaker outputs (sure seal connectors) Speaker impedance4 8 ohms Maximum power output52 W 4 (at 4 ohms) General OutputsAudio outputs (front/rear) Subwoofer output (mono) Power aerial relay con

5、trol lead Power amplifier control lead InputsTelephone ATT control lead Illumination control lead BUS control input connector BUS audio input connector Remote controller input connector Aerial input connector Loudness+8 dB at 100 Hz +2 dB at 10 kHz Power requirements12 V DC car battery (negative ear

6、th) DimensionsApprox. 178 50 182 mm (w/h/d) Mounting dimensionsApprox. 182 53 160 mm (w/h/d) MassApprox. 1.5 kg Supplied accessoriesParts for installation and connections (1 set) Front panel case (1) Card remote commander RM-X111 Tone controlsBass 8 dB at 100 Hz Treble 8 dB at 10 kHz Note This unit

7、cannot be connected to a digital preamplifier or an equalizer. Design and specifications are subject to change without notice. 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MDX-M690 1.SERVICING NOTES.4 2.GENERAL Location of Controls .5 3.DISASSEMBLY 3-1.Disassembly Flow .8 3-2.Cover .9 3-3.Front Panel (Key) Assy

8、.9 3-4.Mechanism Deck (MG-164MA-138) . 10 3-5.Motor Block Assy, Cam (R) Assy . 10 3-6.Sub Panel Assy . 11 3-7.MAIN Board . 11 3-8.Heat Sink . 12 3-9.SERVO Board . 12 3-10. MD Cover Assy. 13 3-11. Float Block . 13 3-12. Lo Motor Assy (Loading) (M903). 14 3-13. Lever (LE23) Assy . 14 3-14. Holder Assy

9、 . 15 3-15. Chucking Arm Assy . 15 3-16. Optical Pick-up (KMS-241C). 16 3-17. SL Motor Assy (Sled) (M902), SP Motor Assy (Spindle) (M901). 16 4.ASSEMBLY 4-1.Assembly Flow. 17 4-2.Motor Block Assy . 18 4-3.Cam (R) Assy . 18 4-4.Adjusting Phase of Motor Block Assy, Cam (R) Assy . 19 4-5.Phase Check .

10、19 5.ELECTRICAL ADJUSTMENTS Test Mode . 20 MD Section . 20 Tuner Section . 20 TABLE OF CONTENTS 6.DIAGRAMS 6-1.Block Diagram SERVO Section . 21 6-2.Block Diagram TUNER Section . 22 6-3.Block Diagram MAIN Section . 23 6-4.Block Diagram DISPLAY/BUS CONTROL/ POWER SUPPLY Section . 24 6-5.Note for Print

11、ed Wiring Boards and Schematic Diagrams . 25 6-6.Printed Wiring Boards SERVO Section . 27 6-7.Schematic Diagram SERVO Section (1/2) . 28 6-8.Schematic Diagram SERVO Section (2/2) . 29 6-9.Printed Wiring Board MAIN Section (1/2) . 30 6-10. Printed Wiring Boards MAIN Section (2/2) . 31 6-11. Schematic

12、 Diagram MAIN Section (1/4) . 32 6-12. Schematic Diagram MAIN Section (2/4) . 33 6-13. Schematic Diagram MAIN Section (3/4) . 34 6-14. Schematic Diagram MAIN Section (4/4) . 35 6-15. Printed Wiring Board SUB MD Board . 36 6-16. Schematic Diagram SUB MD Board . 37 6-17. Printed Wiring Board KEY Board

13、 . 38 6-18. Schematic Diagram KEY Board . 39 6-19. Printed Wiring Board DISPLAY Board . 40 6-20. Schematic Diagram DISPLAY Board . 41 6-21. IC Pin Function Description . 49 7.EXPLODED VIEWS 7-1.Sub Panel Section. 61 7-2.Front Panel (DSPL) Section . 62 7-3.Front Panel (KEY) Section . 63 7-4.MAIN Boar

14、d Section . 64 7-5.Mechanism Deck Section-1 (MG-164MA-138) . 65 7-6.Mechanism Deck Section-2 (MG-164MA-138) . 66 8.ELECTRICAL PARTS LIST. 67 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MDX-M690 Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalu

15、m capacitor may be dam- aged by heat. Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C dur- ing 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 solderin

16、g or unsoldering. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT 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

17、NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB- LISHED BY SONY. CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous ra- diation exposure. The laser diode in the optical pick-up block may suffer electro- static br

18、eak-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

19、 damaged and should be handled with care. NOTES ON LASER DIODE EMISSION CHECK Never look into the laser diode emission from right avove when checking it for adustment. It is feared that you will lose your sight. NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK (KMS-241C). The laser diode in the optical p

20、ick-up block may suffer electro- static break-down easily. When handling it, perform soldering bridge to the laser-tap on the flexible board. Also perform mea- sures against electrostatic break-down sufficiently before the op- eration. The flexible board is easily damaged and should be handled with

21、care. laser-tap OPTICAL PICK-UP FLEXIBLE BOARD 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MDX-M690 SECTION 1 SERVICING NOTES PRECAUTION ON OPEN/CLOSE FRONT PANEL The front panel opens to the bottom of main unit. In performing the repair, place the main unit on the base having the height exceeding 1 cm. Open th

22、e front panel by supplying the power through the follow- ing steps: 1.Disconnect the motor connector (CN602) from main board. 2.Supply the power to the motor. Voltage: 9 V Yellow wiring: MOTOR Black wiring : MOTOR + front panel MDX-M690 ( SIDE VIEW) 1cm base black wiring yellow wiring connector (CN6

23、02) + DETACHING THE DISPLAY PANEL IN THE TEST MODE In the normal mode, after pressing the OPEN key for two sec- onds to set the front panel in detaching position and detaching the display panel is complete, the front panel closes automatically. But in the test mode, the front panel opens automatical

24、ly. (refer to page 20 for test mode) MDX-M690 55 SECTION 2 GENERAL This section is extracted from instruction manual. 4 Location of controls Refer to the pages listed for details. : During Playback: During radio reception: During menu mode a SCRL (scroll) button 12 b DSPL/PTY (display mode change/ p

25、rogramme type) button 12, 13, 17, 20, 25, 35 c Number buttons (1) REP 12 (2) SHUF 12 15, 16, 18, 19, 22, 24 d EQ7 button 26 e MENU button 10, 13, 14, 15, 19, 21, 23, 25, 26, 27, 28, 30, 31, 33, 34, 35 f SOURCE (Power on/Radio/CD/MD) button 10, 11, 13, 15, 16, 19, 22, 26, 27, 29, 30, 31, 33, 35 g /,

26、SEEK +/ buttons 10, 28, 29, 30, 31 11 16, 18, 22 10, 13, 14, 15, 21, 23, 25, 26, 27, 28, 30, 31, 33, 34, 35 h SOUND button 28, 29, 30, 31 i OFF (Stop/Power off) button 11, 35 j VOL +/ buttons 19 k OPEN/CLOSE button 11, 37 l AF button 18, 19 m TA button 19 n MODE button 11, 13 15, 16, 19, 22 o DSO bu

27、tton 27 p LIST button 13, 14 17, 24 q M/m DISC +/ buttons 11, 14 16, 17, 20, 22, 23, 24, 25 10, 13, 14, 15, 19, 21, 23, 25, 26, 27, 28, 30, 31, 33, 34, 35 r ENTER button 14 17, 20, 23, 24, 25 10, 13, 14, 15, 19, 21, 23, 25, 26, 27, 30, 31, 33, 34, 35 s ATT button 33 Card remote commander RM-X111 CD/

28、MDRADIOMENU DISC ATTOFF SCRL DSPL 1 4 AF MODE 2 5 TA 3 6 SOURCE DISC + SEEK+SEEK SOUND ENTER MENU LIST EQ7DSO VOL + OPEN/CLOSE PTY REPSHUF DISC SOURCE DISC + SEEK+SEEK M (DISC) (+): to select upwards In menu mode, the currently selectable button (s) of these four are indicated with a “ v” in the dis

29、play. m (DISC) (): to select downwards Note If the unit is turned off by pressing (OFF) for 2 seconds, the unit cannot be operated with the card remote commander unless (SOURCE) on the unit is pressed, or a disc is inserted to activate the unit first. Tip Refer to “Replacing the lithium battery” for

30、 details on how to replace the batteries (page 36). CD/MD RADIO CD/MD RADIO MENU CD/MD RADIO CD/MD RADIO CD/MD RADIO MENU CD/MD RADIO MENU 5 The corresponding buttons of the unit control the same functions as those on the card remote commander. a OPEN button 9, 11, 37 b Main display window c qf Rece

31、ptor for the card remote commander d qs Reset button 9 e Volume adjust buttons f SCRL (scroll) button g SOURCE button h DSPL/PTY (display mode change/ programme type) button i Sub display window j DISC +/ (cursor up/down) buttons SEEK /+ (cursor left/right) buttons k MENU button m LIST button oCLOSE

32、 (front panel close) button 9, 11 p OFF (Stop/Power off) button* q MODE button r Number buttons s SOUND button t EQ7 button u ENTER button v DSO button w Z (eject) button 11 Main display panel Operation side CLOSE O F F M O D E SOURCE ENTER SOUND MENU LIST DISC RESET DISC DSO REPSHUF EQ7 AFTA123456

33、S C R L D S P L P T Y MDX-M690 66 L R AUDIO OUT FRONT AUDIO OUT REAR BUS AUDIO 1357 2468 57 468 3 Cautions This unit is designed for negative earth 12 V DC operation only. Do not get the wires under a screw, or caught in moving parts (e.g. seat railing). Before making connections, turn the car ignit

34、ion off to avoid short circuits. Connect the power connecting cord 8 to the unit and speakers before connecting it to the auxiliary power connector. Run all earth wires to a common earth point. Be sure to insulate any loose unconnected wires with electrical tape for safety. Notes on the power supply

35、 cord (yellow) When connecting this unit in combination with other stereo components, the connected car circuits rating must be higher than the sum of each components fuse. When no car circuits are rated high enough, connect the unit directly to the battery. Parts list (1) The numbers in the list ar

36、e keyed to those in the instructions. For the use of release key qs, see the supplied operating instructions. Caution Handle the bracket 1 carefully to avoid injuring your fingers. Connection example (2) Notes (2-A) Be sure to connect the earth cord before connecting the amplifier. If you connect an

37、 optional power amplifier and do not use the built-in amplifier, the beep sound will be deactivated. Tip (2-B- ) For connecting two or more CD/MD changers, the source selector XA-C30 (optional) is necessary. Connection diagram (3) ATo AMP REMOTE IN of an optional power amplifier This connection is o

38、nly for amplifiers. Connecting any other system may damage the unit. BTo the interface cable of a car telephone Warning If you have a power aerial without a relay box, connecting this unit with the supplied power connecting cord 8 may damage the aerial. Notes on the control leads The power aerial co

39、ntrol lead (blue) supplies +12 V DC when you turn on the tuner or when you activate the AF (Alternative Frequency), TA (Traffic Announcement) function. When your car has built-in FM/MW/LW aerial in the rear/side glass, connect the power aerial control lead (blue) or the accessory power input lead (r

40、ed) to the power terminal of the existing aerial booster. For details, consult your dealer. A power aerial without a relay box cannot be used with this unit. Memory hold connection When the yellow power input lead is connected, power will always be supplied to the memory circuit even when the igniti

41、on switch is turned off. Notes on speaker connection Before connecting the speakers, turn the unit off. Use speakers with an impedance of 4 to 8 ohms, and with adequate power handling capacities to avoid its damage. Do not connect the speaker terminals to the car chassis, or connect the terminals of

42、 the right speakers with those of the left speaker. Do not connect the earth lead of this unit to the negative () terminal of the speaker. Do not attempt to connect the speakers in parallel. Connect only passive speakers. Connecting active speakers (with built-in amplifiers) to the speaker terminals may damage the unit.