Yamaha-CRXE300-cs-sm 维修电路原理图.pdf

100805P.O.Box 1, Hamamatsu, JapanI CONTENTSTO SERVICE PERSONNEL . 2PREVENTION OF ELECTRO STATIC DISCHARGE.34FRONT PANELS. 4REAR PANELS . 56SPECIFICATIONS. 67INTERNAL VIEW . 7DISASSEMBLY PROCEDURES / 分解手順 . 810CD MECHANISM UNIT OPERATION CHECK /CD動作 . 11TEST MODE / . 1215CD TEST MODE / CD . 1617CD STANDARD OPERATION CHART /CD基本動作 . 1821CD ERROR MESSAGE / CD . 2225AMP ADJUSTMENTS / 調整 . 2627IC DATA . 2837DISPLAY DATA . 38BLOCK DIAGRAM. 3940PRINTED CIRCUIT BOARD . 4146SCHEMATIC DIAGRAM . 4750REMOTE CONTROL. 51PARTS LIST. 5268SYSTEM CONTROL . 6983NX-E300 . 84Parts List for Carbon Resistors . 85IMPORTANT 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.SERVICE MANUALMINI COMPONENT SYSTEMCRX-E300/NX-E300CRX-E300RadioFans.CN 收音机爱 好者资料库2CRX-E300CRX-E300WALLOUTLETEQUIPMENTUNDER TESTAC LEAKAGETESTER OREQUIVALENTINSULATINGTABLEI TO SERVICE PERSONNEL1. Critical Components InformationComponents having special characteristics are markeds and must be replaced with parts havingspecifications equal to those originally installed.2. Leakage Current Measurement (For 120V ModelsOnly)When service has been completed, it is imperative toverify that all exposed conductive surfaces are properlyinsulated from supply circuits.Meter impedance should be equivalent to 1500 ohmshunted by 0.15F.Leakage current must not exceed 0.5mA.Be sure to test for leakage with the AC plug in bothpolarities.“CAUTION”“F403: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.6A, 125V FUSE.”“F404: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 1.25A, 125V FUSE.”CAUTIONF403: REPLACE WITH SAME TYPE 1.6A, 125V FUSE.F404: REPLACE WITH SAME TYPE 1.25A, 125V FUSE.ATTENTIONF403: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.6A, 125V.F404: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 1.25A, 125V.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (whereapplicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (andpossibly 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 or exposeeyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands beforehandling food.WARNING: Laser SafetyThis product contains a laser beam component. This component may emit invisible, as well as visible radiation, which maycause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be used duringservicing 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.Laser Emitting conditions:1) When the Top Cover is removed, and the STANDBY/ON key 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 loaded, you will not be exposed to any laseremissions.2) 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.RadioFans.CN 收音机爱 好者资料库3CRX-E300CRX-E300VARO!:AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NKYMTTMLLE LASER-STEILYLLE. L KATSO STEESEEN.VARNING!: OSYNLIG LASERSTRLNING NR DENNA DEL R PPNAD OCH SPRREN R URKOPPLAD.BETRAKTA EJ STRLEN.B, G, R, K modelsB, G, R, K modelsThe label is underthe MAIN (1) P.C.B.I PREVENTION OF ELECTRO STATIC 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 transistors andsemiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused byelectro static discharge (ESD).1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body bytouching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should beremoved 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 as aluminum foil, toprevent 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 generateelectrical 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 comparableconductive material).7. Immediately before removing the protective material from the leads of a replacement ES divice, touch the protective material to thechassis 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 the brushingtogether of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage anES device).Optical Pick-upLaser Diode Properties Material: GaAlAs Wavelength: 780 nm Emission Duration : Continuous Laser Output: max. 44.6 W*This output is the value measured at a distance ofabout 200 mm from the objective lens surface on theOptical Pick-up Block.4CRX-E300CRX-E300I FRONT PANELSU, C, A, R, K, J modelsB, G modelsCRX-E400/E300 V891330CRX-E400/E300 V891340Grounding for electrostatic breakdown prevention1. Human body groundingUse the antistatic wrist strap to discharge the static electricityfrom your body.2. Work table groundingPut a conductive material (sheet) or steel sheet on the areawhere the optical pickup is placed and ground the sheet.Caution:The static electricity of your clothes will not be groundedthrough the wrist strap. So take care not to let your clothestouch the optical pickup.1MConductive material(sheet) or steel sheetAnti-static wrist strip5CRX-E300CRX-E300B modelG modelI REAR PANELSU, C modelsA modelR modelK model6CRX-E300CRX-E300J modelI SPECIFICATIONS / 参考仕様I Audio Section / 部Minimum RMS Output Power per Channel (Power Amp. Section)/ 定格出力(部)SP OUT L/R (1 kHz, 0.1% THD, 6 ohms) .25W + 25WMaximum Power per Channel / 実用最大出力 (EIAJ) R, J modelsSP OUT L/R (1 kHz, 10% THD, 6 ohms) .30W + 30WDynamic Power Per Channel / (IHF)SP OUT L/R6/4/2 ohms . 35/40/45WDIN Standard Output Power Per Channel / DIN G modelSP OUT L/R (1 kHz, 0.7% THD, 4 ohms) .28W + 28WDynamic Headroom / U, C models6 ohms. 1.46 dBIEC Power Per Channel / IEC G modelSP OUT L/R (1 kHz, 0.1% THD, 6 ohms) .25W + 25WPower Band Width / 幅SP OUT L/R (0.1% THD, 12.5W/6 ohms) .10 Hz to 50 kHzDamping Factor / SP OUT L/R (20 Hz to 20 kHz, 6 ohms) . 60 or moreInput Sensitivity / Input Impedance (入力感度/入力)MD, TAPE, AUX. 170 mV / 47 k-ohmsMaximum Input Signal Level / 最大許容入力MD, etc. (1 kHz, 0.5% THD) . 3.0 VOutput Level / Output Impedance (出力電圧/出力)REC OUT (MD, TAPE) . 170 mV / 1.2 k-ohmsSUBWOOFER (50 Hz). 2.0 V/1.2 k-ohmsHeadphone Jack Rated Output / Impedance (出力/出力)MD, etc. (1 kHz, 170 mV, 8 ohms) . 0.35 V / 270 ohmsFrequency Response / 周波数特性MD, etc. to SP OUT (20 Hz to 20 kHz) . 0 0.5 dBTotal Harmonic Distortion / 全高調波歪率(20 Hz to 20 kHz, 12.5 W / 6 ohms)MD, etc. to SP OUT .0.04% or lessSignal to Noise Ratio / 信号対雑音比 (IHF-A network)MD, etc. (Input shorted) to SP OUT150 mV .93 dB or more250 mV .98 dB or moreResidual Noise / 残留 (IHF-A netwok)SP OUT L/R . 100 V or lessChannnel Separation / (Vol: MAX)MD, etc. (Input 5.1 k-ohms terminated, 1 kHz) .60 dB or moreMD, etc. (Input 5.1 k-ohms terminated, 10 kHz) .45 dB or moreTone Control Characteristics / 特性BASS:Boost/Cut . 10 dB (50 Hz)Turnover Frequency . 350 HzTREBLE: Boost/Cut . 10 dB (20 kHz)Turnover Frequency . 3.5 kHzFilter Characteristics / 特性SUBWOOFER (L.P.F.) .fc = 150 Hz, 6 dB/oct.I FM Section / FM部Tuning Range / 受信周波数範囲U, C models . 87.5 to 107.9 MHzA, B, G models. 87.50 to 108.00 MHzR, K models . 87.5 to 108.0 / 87.50 to 108.00 MHzJ model. 76.0 to 90.0 MHzUsable Sensitivity / 実用感度 (IHF)Mono . 1.0 V (11.2 dBf)Alternate Channel Selectivity / 実用選択度at 400 kHz . 70 dBSignal to Noise Ratio / 信号対雑音比 (IHF)Mono / Stereo .76 dB / 70 dBHarmonic Distortion / 歪率(1 kHz)Mono/Stereo. 0.2 / 0.3 %Stereo Separation / 1 kHz . 45 dBFrequency Response / 周波数特性20 Hz to 15 kHz .+0.5 / -2 dBAntenna Input / 入力. 75 ohms unbalancedI AM Section / AM部Tuning Range / 受信周波数範囲U, C models . 530 to 1,710 kHzA, B, G, J models . 531 to 1,611 kHzR, K models . 530 to 1,710 / 531 to 1,611 kHzUsable Sensitivity / 実用感度. 300 V/mAntenna / 入力. Loop AntennaI CD Section / CD部Output Level / 出力1 kHz, 0dB. 2.0 0.5 VrmsSignal to Noise Ratio / 信号対雑音比 (EIAJ).100 dB or moreDynamic Range / .96 dB or moreHarmonic Distortion + Noise / 歪率+雑音1 kHz .0.006% or lessFrequency Response / 周波数特性2 Hz to 20 kHz . 0 0.5 dBI General / 総合Power Supply / 電源電圧U, C models .AC 120 V, 60 HzA model .AC 240 V, 50 HzB, G models .AC 230 V, 50 HzR model . AC 110/120/220/240 V, 50/60 HzK model . AC 110/220 V, 60 HzJ model. AC 100 V, 50/60 HzPower Consumption / 消費電力U, C models . 70 WA, B, G, R, K models. 85 WJ model. 55 WStandby Power Consumption / 待機消費電力U, C, J models . 0.65 WA, B, G models. 0.9 WMaximum Power Consumption R, K models2ch Drive, 1 kHz, 10% THD, 6 ohms. 155 WAC Outlets / AC1 switched outlet U, C, A, B, G, J models . 100W2 switched outlets R, K models . 100W max., totalDimensions / 寸法 (W x H x D). 217 x 168 x 312 mm (8-9/16 x 6-5/8 x 12-5/16)Weight / 質量. 5.0 kg (11 lbs.)Finish / 仕上. Gold Color U, C, A, G, R, K models. Silver Color U, C, B, G, J modelsAccessories / 付属品Remote Control, Batteries (Manganese Dry) x 4, Indoor FMAntenna, AM Loop Antenna7CRX-E300CRX-E300217 (8-9/16)160 (6-5/16)8(5/16)168 (6-5/8)15(9/16)22(7/8)275 (10-13/16)312 (12-5/16)Unit : mm (inch)単位: mm （）1 2 3456789I SPEAKER Section / 部 (NX-E300)Type / 型式.2 Way Bass-reflex Magnetic Shielding TypeDriver / Woofer .11cm (4-1/2) Cone TypeTweeter . 2.5cm (1) Dome TypeFrequency Response / 再生周波数帯域.60 Hz to 28 kHzImpedance / . 6 ohmsNominal Input / 許容入力. 40 WMaximum Input / 最大入力. 110 WSensitivity / 出力音圧.85 dB/2.83V/mCrossover Frequency / 周波数.3 kHzInput Terminal / 入力端子. Screw/Banana TypeDimensions / 外形寸法 (W x H x D). 165 x 255 x 183 mm (6-1/2 x 10 x 7-3/16)Weight / 質量. 3.4 kg (7 lbs. 8 oz.)Finish / 仕上.High Gloss Piano FinishAccessories / 付属品. Speaker Cable (4m) x 2* Specifications are subject to change without notice due toproduct improvements.U . U.S.A. modelC . Canadian modelA . Australian modelB . British modelG . European modelR . General modelK . Korean modelJ . Japanese model DIMENSIONSI INTERNAL VIEW1 MAIN (1) P.C.B.2 MAIN (2)(4) P.C.B.3 MAIN (5) P.C.B.4 MAIN (8) P.C.B. R, K models only5 INPUT (1) P.C.B.6 CD P.C.B.7 OPERATION P.C.B.8 INPUT (2) P.C.B.9 INPUT (3) P.C.B.8CRX-E300CRX-E3002211334Top CoverFront PanelHook(Remove parts in the order as numbered.)Disconnect the power plug from the AC outlet.1. Removal of Top Covera. Remove 4 screws (1) and 5 screws (2) in Fig. 1.b. Lift the Top Cover at the rear and move it rear-wardslantingly.2. Removal of Front Panel Unita. Disconnect cables from Connectors (CB752, CB751,CB413, CB406, CB303, CB302) in Fig. 2.b. Remove 3 screws (3) and 3 screws (4) in Fig. 1.c. Detouch the 2 hooks and then pull the Front Panel Unitforward in Fig. 1.Fig. 1Fig. 2CB302CB303CB751CB752CB413CB406I DISASSEMBLY PROCEDURES / 分解手順98576AAATunerMain (1) P.C.BFig. 4（番号順部品取外。）AC電源、電源抜。1. 外方a. 4本、5本外。 （図1）b. 持上後方外。2. 外方a. （CB752、CB751、CB413、CB406、CB303、CB302） 外。 （図2）b. 3本、3本外。 （図1）c. 両外、前方引出。 （図1）3. Removal of Tunera. Disconnect a cable from Connector (CB305) in Fig. 3.b. Remove 3 screws (5) and then remove the Tuner inFig. 4.3. 外方a. （CB305） 外。 （図3）b. 3本外、取外。 （図4）Fig. 3CB305CB306CB416CB417CB412Tuner9CRX-E300CRX-E300BCB404Frame/P.C.B/P.C.BCD Mechanism UnitC