Yamaha-CDX497-cd-sm 维修电路原理图.pdf

101016P.O.Box 1, Hamamatsu, JapanSERVICE MANUALIMPORTANT NOTICEThis manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are alreadyknown and understood by the users, and have therefore not been restated.WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personalinjury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,we advise all YAMAHA product owners that any service required should be performed by an authorizedYAMAHA Retailer or the appointed service representative.IMPORTANT:The presentation or sale of this manual to any individual or firm does not constitute authorization, certification orrecognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, andservice departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitableand specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, pleasecontact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).IMPORTANT:Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.I CONTENTSTO SERVICE PERSONNEL . 24PREVENTION OF ELECTROSTATIC DISCHARGE . 5FRONT PANELS. 6REAR PANELS . 68REMOTE CONTROL PANELS. 8SPECIFICATIONS / 参考仕様 . 9INTERNAL VIEW . 9REPAIR NOTES / 修理上留意点 . 10HOW TO MANUALLY EJECT THE TRAY /手動開方法 . 10DISASSEMBLY PROCEDURES / 分解手順. 1112TEST MODE / . 1314IC DATA . 1519BLOCK DIAGRAM. 20WIRING DIAGRAM . 21PRINTED CIRCUIT BOARDS. 2224SCHEMATIC DIAGRAMS. 2526REPLACEMENT PARTS LIST . 2829REMOTE CONTROL. 30 2006 All rights reserved.This manual is copyrighted by YAMAHA and may not be copied orredistributed either in print or electronically without permission.CDX-497/CDX-397 06.07COMPACT DISC PLAYERCDX-497/CDX-397RadioFans.CN 收音机爱 好者资料库CDX-497/CDX-3972CDX-497/CDX-397I TO SERVICE PERSONNELWARNING: Laser SafetyThis product contains a laser beam component. This component may emit invisible, as well as visible radiation,which may cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must beused during servicing of the unit.1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away fromthe laser pick-up unit at all times. Do not stare at the laser beam at any time.2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual.3) CAUTION: Use of controls, adjustments or performance of procedures other than those specified herein may result inhazardous radiation exposure.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic(where applicable) components may also contain traces of chemicals found by the California Health and WelfareAgency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANYREASON WHATSOEVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes orexpose eyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your handsbefore handling food.本機搭載基板無鉛付。無鉛種類、修理時下記無鉛使用推奨。Sn+Ag+Cu （錫+銀+銅）Sn+Cu （錫+銅）Sn+Zn+Bi （錫+亜鉛+）注意：無鉛融点温度通常鉛入比3040程度高、合使用。All of the P.C.B.s installed in this unit are soldered usingthe lead free solder.Among some types of lead free solder currently available,it is recommended to use one of the following types for therepair work. Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth)Caution:As the melting point temperature of the lead free solder isabout 30C to 40C (50F to 70F) higher than that of the leadsolder, be sure to use a soldering iron suitable to each solder.About Lead Free Solder / 無鉛Laser Emitting conditions:1) When the top cover is removed, and the “STANDBY/ON” SW is turned to the “ON” position, the laser component will emita beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through thelens of the laser pick-up unit. Do not attempt any servicing during this period!If no disc is detected, the laser will stop emitting the beam. When a disc is set, you will not be exposed to any laseremissions.WALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLE1. Critical Components InformationComponents having special characteristics are marked sand must be replaced with parts having specifications equalto those originally installed.2. Leakage Current Measurement (For 120V Models Only)When service has been completed, it is imperative to verifythat all exposed conductive surfaces are properly insulatedfrom supply circuits.GMeter impedance should be equivalent to 1500 ohmsshunted by 0.15F.GLeakage current must not exceed 0.5mA.GBe sure to test for leakage with the AC plug in both polarities.RadioFans.CN 收音机爱 好者资料库CDX-497/CDX-3973CDX-497/CDX-397WARNINGLaser Diode PropertiesMaterial:GaAlAsWavelength:780 nmEmission duration:continuousLaser output:max. 44.6 W *This output is the value measuredat a distance of about 200 mm fromthe objective lens surface on theOptical Pick-up Block.Optical Pick-up2) The laser power level can be adjusted with the VR on the pick-up PWB. However, this level has been set by the factoryprior to shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in thismanual. Adjustment of this control can increase the laser emission level from the device.CDX-497/CDX-3974CDX-497/CDX-397CDX-497/CDX-3975CDX-497/CDX-397I PREVENTION OF ELECTROSTATIC DISCHARGESome semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are calledElectrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistorsand semiconductor “chip” components. The following techniques should be used to help reduce the incidence of componentdamage caused by electro static discharge (ESD).1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD onyour body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wriststrap, which should be removed for potential shock reasons prior to applying power to the unit under test.2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such asaluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)”can generate electrical charge sufficient to damage ES devices.5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Mostreplacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compa-rable conductive material).7. Immediately before removing the protective material from the leads of a replacement ES divice, touch the protective materialto the chassis or circuit assembly into which the device will be installed.CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as thebrushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)sufficient to damage an ES device).Grounding for electrostatic breakdown prevention1. Human body grounding.Use the antistatic wrist strap to discharge the static electricity from your body.2. Work table grounding.Put a conductive material (sheet) or steel sheet on the area where the optical pickup is placed and ground the sheet.Caution:The static electricity of your clothes will not be grounded through the wrist strap. So take care not to let your clothes touch theoptical pickup.1M-ohmsConductive material(sheet) or steel sheetAnti-static wrist strapCDX-497/CDX-3976CDX-497/CDX-397I FRONT PANELSI REAR PANELSCDX-497 (R model)CDX-497 (R, T, K, A, B, G, J models)CDX-397 (R, T, A, B, G models)CDX-497 (T model)CDX-497 (K model)CDX-497/CDX-3977CDX-497/CDX-397CDX-497 (A model)CDX-497 (B, G models)CDX-497 (J model)CDX-397 (R model)CDX-397 (T model)CDX-497/CDX-3978CDX-497/CDX-397I REMOTE CONTROL PANELSCDX-397 (A model)CDX-397 (B, G models)CDX-497 (R, T, K, A, B, G, J models)CDX-397 (R, T, A, B, G models)CDX-497/CDX-3979CDX-497/CDX-397I INTERNAL VIEWUnit: mm (inch)単位：mm （）I SPECIFICATIONS / 参考仕様I Audio Section / 部Frequency Response / 周波数特性 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Hz to 20 kHz, 0.5 dBTotal Harmonic Distortion + Noise (1 kHz) / 高調波歪率 （1 kHz） . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.003 % or lessSignal to Noise Ratio / 信号対雑音比 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 dB or moreDynamic Range / . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 dB or moreOutput Voltage (1 kHz, 0 dB) / 出力電圧 （1 kHz、0 dB） . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 0.5 VHeadphone Output (-20 dB) / 出力電圧 （-20 dB）CDX-497 model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750 100 mV/32 ohmsI General / 総合Power Supply / 電源電圧R model .AC 110-120/220-240 V, 50/60 HzT model.AC 220 V, 50 HzK model.AC 220 V, 60 HzA model.AC 240 V, 50 HzB, G models . AC 220-240 V, 50 HzJ model . AC 100V, 50/60 HzPower Consumption / 消費電力 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 WDimensions (W x H x D) / 寸法 （幅高奥行） . . . . . . . . . . . . 435 x 87 x 287 mm (17-1/8 x 3-7/16 x 11-5/16)Weight / 質量 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.5 kg (7 lbs. 11 oz)Finish / 仕上CDX-497Gold color . T, K, J modelsBlack color . R, A, G modelsTitanium color . R, B, G modelsCDX-397Gold color .T modelBlack color .R, T, A, G modelsTitanium color . R, B, G modelsDIMENSIONS435 (17-1/8)276 (10-7/8)17(11/16)4(3/16)70(2-3/4)87(3-7/16)287 (11-5/16) 7(1/4)15324678FRONT (5) P.C.B. (R model)FRONT (2) P.C.B.CD Mechanism MAIN (2) P.C.B.MAIN (1) P.C.B.FRONT (4) P.C.B. FRONT (3) P.C.B. (CDX-497 model)FRONT (1) P.C.B.12345678Accessories / 付属品Remote control x 1, Batteries x 2, Audio pin cable (1.5 m) x 1* Specifications are subject to change without notice due to productimprovements. 参考仕様外観予告変更。R . General modelT. Chinese modelK . Korean modelA . Australian modelB . British modelG . European modelJ . Japanese modelCDX-497/CDX-39710CDX-497/CDX-397None of the components of the following unit can besupplied separately.Each unit must be replaced as a whole in case of a failure.CD MechanismMAIN P.C.B.FRONT P.C.B.下記、小部品部品供給。故障場合、各交換。 CD MAIN P.C.B. FRONT P.C.B.I REPAIR NOTES / 修理上留意点I HOW TO MANUALLY EJECT THE TRAY / 手動開方法a. Turn the unit bottom up.b. Using a flatblade screwdriver, turn the loading cam 90degrees in the direction indicated by an arrow in thefigure.c. Gently pull the tray out.a. 本機上下反転。b. 図示矢印方向90度回転。c. 引出。TrayLoading camTrayFlatblade screwdriverCDX-497/CDX-39711CDX-497/CDX-397Front Panel AssyCable ConnectionsMountingDismountingTop Cabinet 25 Remove 2 screws. 61 (2 on side) Remove 4 screws. 60(4 on rear side) Lift top cabinet from rear side to remove. Remove CN42, CN52 and CN71. Unlock tray lid and close tray. Open tray. (See HOW TO MANUALLYEJECT THE TRAY) Remove 2 screws. 52(Front panel assy to side frame) Remove 4 screws. 51(Front panel assy to bottom frame) Remove front panel assy. Unlock front panel assy from frameby releasing successively 2 snaps.(2 on the side) Remove CN21-23, CN41(MAIN (1) P.C.B.) and CN44. Remove 2 screws. 56(P.C.B. to bottom frame) Remove 1 screw. 59(P.C.B. to rear panel)Remove 3 screws (CDX-497),2 screws (CDX-397). 58(P.C.B. to rear panel) Remove MAIN (1) P.C.B.MAIN (1) P.C.B. 35 (1) Remove 1 screw. 59(P.C.B. to rear panel) Remove MAIN (2) P.C.B.which is connected directlyto the lower P.C.B. withconnectors.MAIN (2) P.C.B. 35 (2) Remove CN43. Remove 2 screws. 53(P.C.B. to rear panel) Remove FRONT (5) P.C.B.FRONT (5) P.C.B. 31 (5)(R model) Remove CN41 (FRONT (2)P.C.B.), CN41(MAIN P.C.B.)and CN44. Remove CN43. (R model)(P.C.B. to rear panel) Remove 1 screws. 56(P.C.B. to bottom frame) Remove 3 screws. 55(P.C.B. to bottom frame)FRONT (2) P.C.B. 31 (2) Remove 2 screws. 53(P.C.B. to front panel assy) Remove FRONT (4) P.C.B.FRONT (4) P.C.B. 31 (4) Remove 1 screws. 53(P.C.B. to front panel assy) Remove FRONT (1) P.C.B.FRONT (1) P.C.B. 31 (1) Remove 1 screws. 54(P.C.B. to front panel assy) Remove FRONT(3) P.C.B.FRONT (3) P.C.B. 31 (3)(CDX-497 model) Remove CN21-23. Remove 4 screws. 57(CD mechanism to bottom frame)Remove CD mechanism.CD Mechanism 38 Unlock tray lid and close tray. Open tray. (See HOW TO MANUALLYEJECT THE TRAY)CD MechanismFRONT (4) P.C.B.FRONT (2) P.C.B.FRONT (2) P.C.B.CN71CN22CN52CN23CN21CN41(MAIN (1) P.C.B.)FRONT (5) P.C.B.(R model)CN41(FRONT (2) P.C.B.)CN44CN42FRONT (1) P.C.B.FRONT (3) P.C.B.(CDX-497 model)CN43(R model)View AAFront Panel AssyI DISASSEMBLY PROCEDURESSee REPLACEMENT PARTS LIST for item numbers.CDX-497/CDX-39712CDX-497/CDX-397 配置図 25 側面 61 2本外。 面 60 4本外。 後側上取 外。 開。 （ “手動 開方法” 参照） 外、 閉。 開。 （ “手動 開方法” 参照） 外、 閉。 CN42、CN52、CN71外。 側面 52 2本外。 底面 51 4本外。 側面2所外、 ASSY取外 。 面 59 1本外 。MAIN （2） P.C.B.取外 。但、MAIN （2） P.C.B. 下方P.C.B.直接 接続。MAIN （2） P.C.B. 35 （2） CN21-23、CN41 （MAIN （1） P.C.B.） 、CN44外。 面 59 1本外 。 面 58 3本外 。 MAIN （1） P.C.B.取外 。MAIN （1） P.C.B. 35 （1） FRONT （4） P.C.B. 31 （4） 53 1本外。 FRONT （1） P.C.B.取 外。FRONT （1） P.C.B. 31 （1） 53 1本外。 FRONT （4） P.C.B.取 外。 FRONT （3） P.C.B.取外 。 54 1本外。FRONT （3） P.C.B. 31 （3） CN21-23外。底面 57 4本外。 CD取外。CD 38 ASSY CN41 （FRONT （2） P.C.B.） 、CN41 （MAIN P.C.B.） CN44外。 底面 55 3本外。 底面 56 1本外。 FRONT （2） P.C.B.取外。FRONT （2） P.C.B. 31 （2） MountingDismounting