Aiwa-CXJN5-cs-sm维修电路原理图.pdf

Model Name Using Similar MechanismNEWCD Mechanism TypeCDM74-K6BD71A, CDM74S-K6BD71A,CDM74S-K6BD72CDBase Unit NameBU-K6BD71A, BU-K6BD72SectionOptical Block NameKSM-213DCPOptical Pick-up NameKSS-213DTape deckModel Name Using Similar MechanismNEWSectionTape Transport Mechanism TypeCWM43FF13, CWM43FR16,CWM43FR26Ver 1.1 2003.069-877-250-02Sony Corporation2003F05-1Home Audio Company 2003.06Published by Sony Engineering CorporationSPECIFICATIONSCX-JN5 is the amplifier, CD player, tape deckand tuner section in JAX-N5/PK5. Continued on next page RadioFans.CN 收音机爱 好者资料库CX-JN5Notes 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 thecircuit board (within 3 times). Be careful not to apply force on the conductor when solderingor unsoldering.CAUTIONUse of controls or adjustments or performance of proceduresother than those specified herein may result in hazardous ra-diation exposure.SAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARKOR DOTTEDLINE WITH MARK ON THE SCHEMATIC DIAGRAMSAND IN THE PARTS LIST ARE CRITICAL TO SAFEOPERATION. REPLACE THESE COMPONENTS WITHSONY PARTS WHOSE PART NUMBERS APPEAR ASSHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-LISHED BY SONY.The following caution label is located inside the unit.This appliance is classified asa CLASS 1 LASER product.The CLASS 1 LASERPRODUCT MARKING islocated on the rear exterior.SAFETY CHECK-OUTAfter correcting the original service problem, perform the follow-ing safety check before releasing the set to the customer:Check the antenna terminals, metal trim, “metallized” knobs,screws, and all other exposed metal parts for AC leakage.Check leakage as described below.LEAKAGE TESTThe AC leakage from any exposed metal part to earth ground andfrom all exposed metal parts to any exposed metal part having areturn to chassis, must not exceed 0.5 mA (500 microamperes.).Leakage current can be measured by any one of three methods.1.A commercial leakage tester, such as the Simpson 229 or RCAWT-540A. Follow the manufacturers instructions to use theseinstruments.2.A battery-operated AC milliammeter. The Data Precision 245digital multimeter is suitable for this job.3.Measuring the voltage drop across a resistor by means of aVOM or battery-operated AC voltmeter. The “limit” indica-tion is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex-amples of a passive VOM that is suitable. Nearly all batteryoperated digital multimeters that have a 2 V AC range are suit-able. (See Fig. A)ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT!LES COMPOSANTS IDENTIFIS PAR UNE MARQUE SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTEDES PICES SONT CRITIQUES POUR LA SCURITDE FONCTIONNEMENT. NE REMPLACER CES COM-POSANTS QUE PAR DES PICES SONY DONT LESNUMROS SONT DONNS DANS CE MANUEL OUDANS LES SUPPLMENTS PUBLIS PAR SONY.RadioFans.CN 收音机爱 好者资料库CX-JN5TABLE OF CONTENTS1.SERVICING NOTES.42.GENERALLocation of Controls .73.DISASSEMBLY3-1.Disassembly Flow .93-2.Case (SIDE-L/R). 103-3.Case (Top) . 103-4.Tray Panel. 113-5.CD Mechanism Deck (CDM74-K6BD71AS,CDM74S-K6BD71A, CDM74S-K6BD72). 113-6.Front Panel Section . 123-7.Mechanical Deck(CWM43FF13, CWM43FR16, CWM43FR26) . 123-8.Rear Cabinet Section . 133-9.PT Board, MAIN Board. 133-10. Table Assy . 143-11. Motor (TB) Board . 143-12. Motor (LD) Board. 153-13. Base Unit (BU-K6BD71A, BU-K6BD72) . 153-14. Motor Gear Assy (Sled) (M701), BD Board . 163-15. Optical Pick-up (KSS-213D). 164.TEST MODE. 175.ELECTRICAL ADJUSTMENTSCD Section . 196.DIAGRAMS6-1.Block Diagram CD Section . 206-2.Block Diagram TUNER/TAPE/PANEL Section . 216-3.Block Diagram AMP/POWER SUPPLY Section . 226-4.Note for Printed Wiring Boards andSchematic Diagrams . 236-5.Printed Wiring Board BD Section (AEP, UK, CIS, E51, MX). 246-6.Schematic Diagram BD Section (AEP, UK, CIS, E51, MX). 256-7.Printed Wiring Board BD Section (US, CND, E, SP, TW, KR, AUS). 266-8.Schematic Diagram BD Section (US, CND, E, SP, TW, KR, AUS). 276-9.Printed Wiring Boards CHANGER Section . 286-10. Schematic Diagram CHANGER Section . 296-11. Schematic Diagram MAIN Section (1/4) . 306-12. Schematic Diagram MAIN Section (2/4) . 316-13. Schematic Diagram MAIN Section (3/4) . 326-14. Schematic Diagram MAIN Section (4/4) . 336-15. Printed Wiring Board MAIN Section . 346-16. Printed Wiring Board HP Section . 356-17. Schematic Diagram HP Section . 356-18. Printed Wiring Board PANEL Section . 366-19. Schematic Diagram PANEL Section . 376-20. Printed Wiring Boards KEY Section . 386-21. Schematic Diagram KEY Section . 396-22. Printed Wiring Board PT Section (Except E, E51, SP, TW). 406-23. Schematic Diagram PT Section (Except E, E51, SP, TW). 416-24. Printed Wiring Board PT Section (E, E51, SP, TW) . 426-25. Schematic Diagram PT Section (E, E51, SP, TW) . 436-26. IC Pin Function Description . 477.EXPLODED VIEWS7-1.Case Section . 497-2.Front Panel Section-1. 507-3.Front Panel Section-2. 517-4.Front Panel Section-3. 527-5.Front Panel Section-4. 537-6.Chassis Section . 547-7.CD Mechanism Deck Section-1 (CDM74-K6BD71AS,CDM74S-K6BD71A, CDM74S-K6BD72). 557-8.CD Mechanism Deck Section-2 (CDM74-K6BD71AS,CDM74S-K6BD71A, CDM74S-K6BD72). 567-9.CD Mechanism Deck Section-3 (CDM74-K6BD71A,CDM74S-K6BD71A, CDM74S-K6BD72). 577-10. Base Unit Section (BU-K6BD71A, BU-K6BD72). 588.ELECTRICAL PARTS LIST. 59 AbbreviationAUS : Australian modelCND : Canadian modelE51: Chilean and Peruvian modelsKR: Korean modelMX: Mexican modelSP: Singapore modelTW: Taiwan modelRadioFans.CN 收音机爱 好者资料库CX-JN5SECTION 1SERVICING NOTESNOTES ON HANDLING THE OPTICAL PICK-UPBLOCK OR BASE UNITThe laser diode in the optical pick-up block may suffer electro-static break-down because of the potential difference generatedby the charged electrostatic load, etc. on clothing and the humanbody.During repair, pay attention to electrostatic break-down and alsouse the procedure in the printed matter which is included in therepair parts.The flexible board is easily damaged and should be handled withcare.NOTES ON LASER DIODE EMISSION CHECKThe laser beam on this model is concentrated so as to be focusedon the disc reflective surface by the objective lens in the opticalpick-up block. Therefore, when checking the laser diode emis-sion, observe from more than 30 cm away from the objective lens.LASER DIODE AND FOCUS SEARCH OPERATIONCHECKCarry out the “S curve check” in “CD section adjustment” andcheck that the S curve waveforms is output three times. MODEL IDENTIFICATION Back Panel MODELPART No.US model4-245-154-0Chilean and Peruvian models4-245-154-2CIS model4-245-154-4E, Singapore and Taiwan models4-245-154-6Korean and Australian models4-245-154-8AEP and UK models4-245-280-0Mexican model (made in Mexico)4-245-280-3Mexican model (made in China)4-245-280-4Canadian model4-245-280-5PART No.UNLEADED SOLDERBoards 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 withthe lead free mark due to their particular size): LEAD FREE MARKUnleaded solder has the following characteristics. Unleaded solder melts at a temperature about 40 C higher thanordinary solder.Ordinary soldering irons can be used but the iron tip has to beapplied to the solder joint for a slightly longer time.Soldering irons using a temperature regulator should be set toabout 350 C.Caution: The printed pattern (copper foil) may peel away if theheated tip is applied for too long, so be careful! Strong viscosityUnleaded solder is more viscou-s (sticky, less prone to flow)than ordinary solder so use caution not to let solder bridges oc-cur such as on IC pins, etc. Usable with ordinary solderIt is best to use only unleaded solder but unleaded solder mayalso be added to ordinary solder.RadioFans.CN 收音机爱 好者资料库CX-JN5HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF.Pull-out the disc tray.Remove the case (side-L).Turn the loading gear in the direction of arrow .RadioFans.CN 收音机爱 好者资料库CX-JN5SERVICE POSITION CD mechanism deck Tape mechanism deck main board (CN691)Connect wire (flat type) (19 core) tomain board (CN691) and BD board (CN710).BD board (CN710)Connect wire (flat type) (13 core) topanel board (CN601) and mechanical deck.panel board (CN601)main board (CN301)RadioFans.CN 收音机爱 好者资料库CX-JN5SECTION 2GENERALThis section is extracted frominstruction manual.DISC CHANGEPOWER STANDBY/ONMODEENTERTREBLEDIR(TAPE B)/PRESETSTOP/CLEARTUNING DOWN, TUNING UPPAUSE/SETBASSi-BassDISPLAYALBUM , (AEP, UK, CIS, Chilean, Peruvian and Mexican models) MULTI JOGPHONES jackSYNC DUB REC/REC MUTINGDISC DIRECT PLAY 1-3OPEN/CLOSETAPE A/BTUNER/BANDVIDEO/AUXCDRemote sensorVOLUMEEnAM LOOP, FM 75 terminals VIDEO/AUX jacksVIDEOAUXTV SPEAKER terminals AC voltage selector (E, Chilean, Peruvian, Singapore, Taiwan)AC power cord LOCATION OF CONTROLSRadioFans.CN 收音机爱 好者资料库CX-JN5EnPOWER1-0/10, +10EDITBANDTAPE A/BSPECTRUMTUNER MODE,ALBUM ,PLAY MODE REPEATENTERCLOCK/TIMER/SETCLOCK/TIMER/SELECTDISPLAY SHIFTFUNCTIONDISC SKIP/,SLEEPVOLUME ( ,)SOUNDCLEARKARAOKEALBUM ,EnCLOCKSETAM 12:00PM 12:00- -:- -RadioFans.CN 收音机爱 好者资料库CX-JN5 This set can be disassembled in the order shown below.3-1.DISASSEMBLY FLOWSECTION 3DISASSEMBLYRadioFans.CN 收音机爱 好者资料库CX-JN53-3.CASE (TOP)Note: Follow the disassembly procedure in the numerical order given.3-2.CASE (SIDE-L/R)RadioFans.CN 收音机爱 好者资料库CX-JN53-4.TRAY PANEL3-5.CD MECHANISM DECK (CDM74-K6BD71AS, CDM74S-K6BD71A, CDM74S-K6BD72)RadioFans.CN 收音机爱 好者资料库CX-JN53-6.FRONT PANEL SECTION3-7.MECHANICAL DECK (CWM43FF13, CWM43FR16, CWM43FR26)RadioFans.CN 收音机爱 好者资料库CX-JN53-8.REAR CABINET SECTION3-9.PT BOARD, MAIN BOARDRadioFans.CN 收音机爱 好者资料库CX-JN53-10. TABLE ASSY3-11. MOTOR (TB) BOARDRadioFans.CN 收音机爱 好者资料库CX-JN53-12. MOTOR (LD) BOARD3-13. BASE UNIT (BU-K6BD71A, BU-K6BD72)RadioFans.CN 收音机爱 好者资料库CX-JN53-14. MOTOR GEAR ASSY (SLED) (M701), BD BOARD3-15. OPTICAL PICK-UP (KSS-213D)RadioFans.CN 收音机爱 好者资料库CX-JN5SECTION 4TEST MODEMC COLD RESET The cold reset clears all data including preset data stored in theRAM to initial conditions. Execute this mode when returningthe set to the customer.Procedure:1.In the standby status, while pressing thebutton, press the button.2.The set is reset, then becomes standby status.GC TEST MODEProcedure:1.Press the button to turn the power on.2.While pressing thebutton, press the button for5 seconds.3.It change displays in order of model type, version and suffix at2 seconds interval, then the display is back to normal status.AMP TEST MODEProcedure:1.In the status where AC plug is disconnected, while pressingthebutton, connect the AC plug to turn thepower on. Then enter the AMP test mode and display “AMPTEST”.2.If turn the knob clockwise, it displays “VOLUMEMAX”, and if turn the knob counterclockwise, it displays“VOLUME 0”.3.If the andknobs are turned clockwise orcounterclockwise, it change displays in order of “EQ MAX”,“EQ MIN” and “EQ FLAT”.4.To release from this mode, disconnect the AC plug and turnthe power off.DISC TRAY LOCKProcedure:1.Press the button to turn the power on.2.While pressing thebutton, press the button for 5 seconds.3.The message “LOCKED” is displayed and the tray is locked.(Even if exiting from this mode, the tray is still locked)4.To release this lock, while pressing thebutton, press the button for 5 again.5.The message “UNLOCKED” is displayed and the tray is un-locked.CD REPEAT 5 LIMIT CANCEL MODE Number of repeat for CD playback is 5 times when the repeatmode is “REPEAT”. This mode enables CD to repeat playbackfor limitless times.Procedure:1.Press the button to turn the power on.2.In the repeat on status, while pressing thebutton, press thebutton to enter the CD repeat 5 limit cancel mode andrepeat mark blinks on the fluorescent indicator tube.3.To release this mode, press the button to turn thepower off.CHANGE-OVER OF AM TUNER STEP BETWEEN9 kHz AND 10 kHz(Except AEP, UK and CIS models) A step of AM channels can be changed over between 9 kHz and10 kHz.Procedure:1.Press the button to turn the power on.2.While pressing the button, press the but-ton to the display on fluorescent indicator tube changes to “AM530 kHz” (10 kHz step) or “AM 531 kHz” (9 kHz step), andthus the channel step is changed over.FUNCTION CHANGE MODE Select either TV, VIDEO or AUX (MD) of the external functioninput.Procedure:1.Press the button to turn the power on.2.While pressing the button, press the button.3.Each time this operation is operated, it change displays in or-der of “TV”, “VIDEO” and “AUX”.RadioFans.CN 收音机爱 好者资料库CX-JN5CD TEST MODE This mode can run the CD sled motor freely. Use this mode, forinstance, when cleaning the pickup.Procedure:1.In the status where AC plug is disconnected, while pressingthe button, connect the AC plug to turn the power on.2.When enter this mode, it displays “CD TEST” and few sec-onds later, all segments turn on of the fluorescent indicatortube.3.To release from this mode, disconnect the AC plug and turnthe power off.In this mode, it operates as following table.ButtonOperationPurpose of useMove the pick-up to outside trackSled circuit checkMove the pick-up to inside trackTracking circuit checkMechanism operation checkOptical pick-up checkPlayback a CDServo block checkIf it cannot focus on, it continuous focus searchWhen playback a CD: stop playbackAPC circuit checkWhen stop a CD:Laser current measuredisplay “READING” (blink)Focus search waveform checkcontinuous laser diode onTracking balance checkcontinuous focus search (not made focus on)Pause, Tracking servo off(ignore CLV error)RadioFans.CN 收音机爱 好者资料库CX-JN5CD SECTIONNote:1.CD Block is basically designed to operate without adjustment. Therefore,check each item in order given.2.Use YEDS-18 (3-702-101-01) unless otherwise indicated.3.Use an oscilloscope with more than 10M impedance.4.Clean the object lens by an applicator with neutral detergent when thesignal level is low than specified value with the following checks.S-CURVE CHECKProcedure :1.Connect an oscilloscope to TP (FE) and TP (VC).2.Turn the power on.3.Load a disc (YEDS-18) and actuate the focus search. (Inconsequence of open and close the disc tray, actuate the focussearch)4.Confirm that the oscilloscope waveform (S-curve) issymmetrical between A and B. And confirm peak to peak levelwithin 3 0.5 Vp-p.Note: Try to measure several times to make sure than the ratioof A : B or B : A is more than 10 : 7. Take sweep time as long as possible and light up thebrightness to obtain best waveform.RF LEVEL CHECKProcedure :1.Connect an oscilloscope to TP (RF) and TP (VC).2.Turn the power on.3.Load a disc (YEDS-18) and playback.4.Confirm that oscilloscope waveform is clear and check if RFsignal level is correct or not.Note:Clear RF signal waveform means that the shape “ ” can be clearlydistinguished at the cente