sony_MDX-CA680X_service_manual 维修电路图.pdf

SERVICE MANUAL FM/AM (MW/LW) MINIDISC PLAYER US Model MDX-CA680X AEP Model UK Model MDX-CA680/CA680X SPECIFICATIONS MDX-CA680/CA680X Photo: MDX-CA680X (US model) Ver 1.1 2001.05 9-870-242-12Sony Corporation 2001E0500-1e Vehicle Company C 2001.5Shinagawa Tec Service Manual Production Group U.S. and foreign patents licensed from Dolby laboratories Licensing Corporation. AUDIO POWER SPECIFICATIONS (US model) POWER OUTPUT AND TOTAL HARMONIC DISTORTION 23 watts per channel minimum continuous average power into 4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more than 5% total harmonic distortion. MD Player section Signal-to-noise ratio90 dB Frequency response10 20,000 Hz Wow and flutterBelow measurable limit Laser Diode Properties (US model) MaterialGaAlAs Wavelength780 nm Emission DurationContinuous Laser output powerLess 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. Tuner section FM T US model: AEP, UK models: uning range 87.5 107.9 MHz 87.5 108.0 MHz Antenna terminalExternal antenna connector Intermediate frequency10.7 MHz/450 kHz 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 AM (US model) Tuning range530 1,710 kHz Antenna terminalExternal antenna connector Intermediate frequency10.7 MHz/450 kHz Sensitivity30 V Power amplifier section OutputsSpeaker outputs (sure seal connectors) Speaker impedance4 8 ohms Maximum power output 50 W 4 (at 4 ohms) General OutputsAudio outputs (front/rear) Power antenna relay control lead Power amplifier control lead InputsTelephone ATT control lead BUS control input connector BUS audio input connector Remote controller input connector Antenna input connectorT US model: one controls Bass 10 dB at 100 Hz Treble 10 dB at 15 kHz AEP, UK models:Bass 9 dB at 100 Hz Treble 9 dB at 10 kHz Power requirements12 V DC car battery (negative ground) DimensionsApprox. 178 50 177 mm (7 1/8 2 7 in.) (w/h/d) Mounting dimensionsApprox. 182 53 161 mm (7 1/4 2 1/8 6 3/8 in.) (w/h/d) MassApprox. 1.2 kg (2 lb 10 oz) Supplied accessoriesParts for installation and connections (1 set) Front panel case (1) Note This unit cannot be connected to a digital preamplifier or an equalizer. Design and specifications are subject to change without notice. MW/LW (AEP, UK models) Tuning rangeMW: 531 1,602 kHz LW: 153 279 kHz Aerial terminalExternal aerial connector Intermediate frequency10.7 MHz/450 kHz SensitivityMW: 30 V LW: 40 V Model Name Using Similar MechanismNEW Base Mechanism TypeMG-164MA-138 Optical Pick-up NameKMS-241C 收音机爱好者资料库 Ra d i o Fa n s .CN 2 MDX-CA680/CA680X 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. 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 soldering 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 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 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 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 pick-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 care. laser-tap OPTICAL PICK-UP FLEXIBLE BOARD 1.GENERAL Location of Controls .3 Setting the Clock.4 2.DISASSEMBLY 2-1.Disassembly Flow . 10 2-2.Sub Panel Assy . 10 2-3.Mechanism Deck (MG-164MA-138) . 11 2-4.MAIN Board . 11 2-5.Heat Sink . 12 2-6.SERVO Board . 12 2-7.MD Cover Assy. 13 2-8.Float Block . 13 2-9.Lo Motor Assy (Loading) (M903). 14 2-10. Lever (LE23) Assy . 14 2-11. Holder Assy . 15 2-12. Chucking Arm Assy . 15 2-13. Optical Pick-up (KMS-241C). 16 2-14. SL Motor Assy (Sled) (M902), SP Motor Assy (Spindle) (M901). 16 3.ELECTRICAL ADJUSTMENTS Test Mode . 17 MD Section . 17 Tuner Section . 17 4.DIAGRAMS. 18 4-1.Block Diagram SERVO Section . 23 4-2.Block Diagram TUNER Section . 24 4-3.Block Diagram MAIN Section . 25 4-4.Block Diagram BUS CONTROL/ POWER SUPPLY Section . 26 4-5.Note for Printed Wiring Boards and Schematic Diagrams . 27 4-6.Printed Wiring Boards SERVO Section . 29 4-7.Schematic Diagram SERVO Section (1/2) . 30 4-8.Schematic Diagram SERVO Section (2/2) . 31 4-9.Printed Wiring Board MAIN Board . 32 4-10. Schematic Diagram MAIN Board (1/3) . 33 4-11. Schematic Diagram MAIN Board (2/3) . 34 4-12. Schematic Diagram MAIN Board (3/3) . 35 4-13. Printed Wiring Board SUB Board . 36 4-14. Schematic Diagram SUB Board . 37 4-15. Printed Wiring Board KEY Board . 38 4-16. Schematic Diagram KEY Board . 39 4-17. IC Pin Function Description . 41 5.EXPLODED VIEWS 5-1.General Section . 49 5-2.Front Panel Section . 50 5-3.Mechanism Deck Section-1 (MG-164MA-138) . 51 5-4.Mechanism Deck Section-2 (MG-164MA-138) . 52 6.ELECTRICAL PARTS LIST. 53 TABLE OF CONTENTS 收音机爱好者资料库 Ra d i o Fa n s .CN 3 MDX-CA680/CA680X SECTION 1 GENERAL This section is extracted from instruction manual. Location of controls Refer to the pages listed for details. : During Playback: During radio reception : During menu mode a Volume control dial 16 b MBP button 22 c Z (eject) button (located on the front side of the unit, behind the front panel) 9 d SOURCE (Power on/Radio/CD/MD) button 8, 9, 11, 13, 14, 16 e Display window f Receptor for the card remote commander g MENU button 8, 10, 11, 12, 13, 17, 18, 21 h DISPLAY/PTY*1 (display mode change/ programme type) button 9, 11, 15, 18 i SCROLL button 9 j OPEN button 7, 9 k LIST button 11 14 l D-BASS button 22 m RESET button (located on the front side of the unit, behind the front panel) 7 n Number buttons (3) REP 10 (6) SHUF 10 13, 14, 16, 17 o MODE button 9, 11 13, 14, 16 p SOUND button 20, 22 q AF button*1 15, 17 r TA button *1 16, 17 s OFF (Stop/Power off) button*2 7, 9 t ENTER button 11 14, 18 8, 10, 11, 12, 13, 17, 18, 21 *2 W *1 AEP, UK models only arning when installing in a car without an ACC (accessory) position on the ignition switch After turning off the ignition, be sure to press (OFF) on the unit for 2 seconds to turn off the clock display. Otherwise, the clock display does not turn off and this causes battery drain. CD/MDRADIOMENU (AEP, UK models) 1 2 3 4 5 6 AF TAOFF D S MENU LIST SOUNDENTER MBPSOURCE REP SHUF MODE DBASS D I S C / P R E S E T SEEKSEEK DISPLAY OPEN PTY SCROLL CD/MD RADIO CD/MD RADIO CD/MD RADIO CD/MD RADIO MENU 收音机爱好者资料库 Ra d i o Fa n s .CN 4 MDX-CA680/CA680X u DISC/PRESET buttons (+/) 9, 11 13, 14, 18 8, 10, 11, 12, 13, 17, 18, 21 v SEEK buttons (/+) 9 13, 14, 16 8, 10, 12, 18, 20, 21 AF TAOFF D S MENU LIST SOUNDENTER D I S C / P R E S E T SEEKSEEK DISPLAY OPEN SCROLL PTY (SEEK) ():to select leftwards/. (SEEK) (+):to select rightwards/ (DISC/PRESET) (+): to select upwards In menu mode, the currently selectable button (s) of these four are indicated with a “ M” in the display. (DISC/PRESET) (): to select downwards CD/MD RADIO MENU CD/MD RADIO MENU Setting the clock The clock uses a 12-hour (US model) or 24-hour (AEP, UK models) digital indication. Example: To set the clock to 10:08 1Press (MENU), then press either side of (DISC/PRESET) repeatedly until “CLOCK” appears. 1Press (ENTER). The hour indication flashes. 2Press either side of (DISC/PRESET) to set the hour. 3Press the (+) side of (SEEK). The minute indication flashes. 4Press either side of (DISC/PRESET) to set the minute. 2Press (ENTER). The clock starts. After the clock setting is completed, the display returns to normal play mode. Tips You can set the clock automatically with the RDS feature (page 18). When D.INFO mode is set to ON, the time is always displayed (page 21). 5 MDX-CA680/CA680X TV tuner unit* Syntoniseur de tlvision* BUS CONTROL IN BUS AUDIO IN Source selector* Slecteur de source* * not supplied non fournis Cautions (US model) This unit is designed for negative ground 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, disconnect the ground terminal of the car battery to avoid short circuits. Connect the yellow and red power input leads only after all other leads have been connected. Run all ground wires to a common ground point. Be sure to insulate any loose unconnected wires with electrical tape for safety. The use of optical instruments with this product will increase eye hazard. Notes on the power supply 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 Iist (1) The numbers in the list are keyed to those in the instructions. Caution Handle the bracket 1 carefully to avoid injuring your fingers. Connection example (2) Notes (2-A) Be sure to connect the ground cord before connecting the amplifier. If you connect an 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 changers, the source selector XA-C30 (optional) is necessary. Connection diagram (3) 1To a metal surface of the car First connect the black ground lead, then connect the yellow and red power input leads. 2To the power antenna control lead or power supply lead of antenna booster amplifier Notes It is not necessary to connect this lead if there is no power antenna or antenna booster, or with a manually-operated telescopic antenna. When your car has a built-in FM/AM antenna in the rear/side glass, see “Notes on the control and power supply leads.” 3To AMP REMOTE IN of an optional power amplifier This connection is only for amplifiers. Connecting any other system may damage the unit. 4To the interface cable of a car telephone 5To the +12 V power terminal which is energized in the accessory position of the ignition key switch Notes If there is no accessory position, connect to the +12 V power (battery) terminal which is energised at all times. Be sure to connect the black ground lead to it first. When your car has a built-in FM/AM antenna in the rear/side glass, see “Notes on the control and power supply leads.” 6To the +12 V power terminal which is energised at all times Be sure to connect the black ground lead to it first. 2 A B AUDIO OUT FRONT AUDIO OUT REAR BUS AUDIO IN BUS CONTROL IN 6 MDX-CA680/CA680X Prcautions Cet appareil est exclusivement conu pour fonctionner sur une tension de 12 V CC avec masse ngative. Evitez de fixer des vis sur les cbles ou de coincer ceux-ci dans des pices mobiles (par exemple, armature de sige). Avant deffectuer les raccordements, dbranchez la borne de terre de la batterie du vhicule pour viter tout court-circuit. Raccordez les fils dentre dalimentation jaune et rouge seulement aprs avoir termin tous les autres raccordements. Rassemblez tous les fils de terre en un point de masse commun. Veillez isoler avec du chatterton tout fil lche non raccord. Remarques sur le cordon dalimentation (jaune) Lorsque cet appareil est raccord dautres lments stro, la valeur nominale des circuits de la voiture raccorde doit tre suprieure la somme des fusibles de chaque lment. Si aucun circuit de la voiture nest assez puissant, raccordez directement lappareil la batterie. Liste des composants (1) Les numros de lillustration correspondent ceux des instructions. Attention Manipulez prcautionneusement le support 1 pour viter de vous blesser aux doigts. Notes on the control and power supply leads The power antenna control lead (blue) supplies +12 V DC when you turn on the tuner. When your car has built-in FM/AM antenna in the rear/side glass, connect the power antenna control lead (blue) or the accessory power input lead (