Yamaha-CRXE400-cs-sm 维修电路原理图.pdf

SERVICE MANUALI CONTENTSTO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . .2FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . .23REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .45INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . .67TEST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89AMP ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . .9IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1012BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . .13PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . .1417PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . .18SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . .1920DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2128REMOTE CONTROL TRANSMITTER . . . . . . . . . . . .29SYSTEM CONTROL . . . . . . . . . . . . . . . . . . . . . .3038NX-E400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39PARTS LIST FOR CARBON RESISTORS . . . . . . . .40This 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 authorized YAMAHARetailer 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, and servicedepartments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable andspecifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact thedistributors 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.IMPORTANT NOTICE100809SERVICE MANUALRX-E400/NX-E400MINI COMPONENT SYSTEM CRX-E400The CRX-E400 is composed of the RX-E400 and the CDX-E400.This service manual is for the RX-E400 (including NX-E400).For the CDX-E400 service manual, please refer to the following publication numbers :CDX-E400100808RX-E400RadioFans.CN 收音机爱 好者资料库RX-E4002RX-E400I TO SERVICE PERSONNEL1. Critical Components InformationComponents having special characteristics are marked Zand 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 ohm shuntedby 0.15F.AC LEAKAGETESTER OREQUIVALENTEQUIPMENTUNDER TESTINSULATINGTABLEWALLOUTLETWARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/orplastic (where applicable) components may also contain traces of chemicals found by the California Health andWelfare Agency (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 FORANY REASON WHATSOEVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumesor expose 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.M U, C, R, A modelsI FRONT PANELSGLeakage current must not exceed 0.5mA.GBe sure to test for leakage with the AC plug in bothpolarities.“CAUTION”“F232 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 3.15A, 125V FUSE.”CAUTIONF232 : REPLACE WITH SAME TYPE 3.15A, 125V FUSE.ATTENTIONF232 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 3.15A, 125V.A VRadioFans.CN 收音机爱 好者资料库RX-E400RX-E4003M B, G modelsI REAR PANELSM U, C modelsM R modelM A modelM B modelM G modelRX-E4004RX-E400I FM SECTIONTuning RangeU, C models . . . . . . . . . . . . . . . . . . . . . . . 87.5 to 107.9MHzA, B, G models . . . . . . . . . . . . . . . . . . . 87.50 to 108.00MHzR model . . . . . . . . . . . . . . 87.5 to 108.0/87.50 to 108.00MHzUsable Sensitivity (75 )Mono (S/N 30dB) U, C, R models . . . . . . . . . . . . . . . . 1.0VAlternate Channel SelectivityU, C, R models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70dBSignal-to-Noise RatioMono/Stereo (IHF)U, C, R models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76/70dBHarmonic DistortionMono/Stereo (1kHz) . . . . . . . . . . . . . . . . . . . . . . . . 0.2/0.3%Stereo Separation1kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45dBFrequency Response20Hz to 15kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.5/-2.0dBAntenna Input . . . . . . . . . . . . . . . . . . . . . . . . . 75 unbalancedI AUDIO SECTIONMinimum RMS Output Power Per Channel20Hz to 20kHz, 0.1% THD, 6 . . . . . . . . . . . . . 40W + 40W1kHz, 0.1% THD, 6 . . . . . . . . . . . . . . . . . . . . . 55W + 55WMaximum Power Per Channel (EIAJ)1kHz, 10% THD, 6 (R model only) . . . . . . . . . 65W + 65WDynamic Power Per Channel (IHF)6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60W + 60W4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75W + 75W2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100W + 100WDIN Standard Output Power Per Channel1kHz, 0.7% THD, 4 (G model only) . . . . . . . . . 60W + 60WDynamic Headroom (6)U, C, models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.76dBIEC Power Per Channel1kHz, 0.1% THD, 6 (G model only) . . . . . . . . . 55W + 55WPower Band Width0.1% THD, 30W/6 . . . . . . . . . . . . . . . . . . . 10Hz to 50kHzDamping Factor20Hz to 20kHz, 6 . . . . . . . . . . . . . . . . . . . . . . . .60 or moreInput Sensitivity/ImpedanceCD, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150mV/47kMaximum Input Signal Level (1kHz, 0.5% THD)CD, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.0VOutput Level/ImpedanceREC OUT (MD, TAPE) . . . . . . . . . . . . . . . . . . 150mV/1.2kSUB WOOFER (50Hz) . . . . . . . . . . . . . . . . . . . . . 2.0V/680Headphone Jack Rated Output/ImpedanceCD, etc 1kHz, 150mV, 8 . . . . . . . . . . . . . . . . . 0.43V/330Frequency Response (20Hz to 20kHz)CD, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 00.5dBTotal Harmonic Distortion (20Hz to 20kHz)CD, etc to SP OUT (20W/6) . . . . . . . . . . . . . . . . . . 0.04%Signal-to-Noise Ratio (IHF-A-Network)CD, etc, Input Shorted (150mV) . . . . . . . . . . . . . . . . . . 93dBResidual Noise (IHF-A-Network)SP OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100VChannel Separation (Vol. 30dB)CD, etc, Input 5.1k Shorted, 1kHz/10kHz . . . . .60dB/45dBTone Control CharacteristicsBASS: Boost/cut . . . . . . . . . . . . . . . . . . . . 10dB (50Hz)Turnover Frequency . . . . . . . . . . . . . . . . . 350HzTREBLE : Boost/cut . . . . . . . . . . . . . . . . . . . 10dB (20kHz)Turnover Frequency . . . . . . . . . . . . . . . . . 3.5kHzFilter CharacteristicsSUB WOOFER (L.P.F.) . . . . . . . . . . . . . fc = 100Hz, 6dB/oct.I SPECIFICATIONSI AM SECTIONTuning RangeU, C models . . . . . . . . . . . . . . . . . . . . . . . .530 to 1710kHzA, B, G models . . . . . . . . . . . . . . . . . . . . . .531 to 1611kHzR model . . . . . . . . . . . . . . . . 530 to 1710/531 to 1611kHzUsable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . 300V/mAntenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Loop antennaI GENERALPower SupplyU, C models . . . . . . . . . . . . . . . . . . . . . . . . AC 120V, 60HzA model . . . . . . . . . . . . . . . . . . . . . . . . . . . AC 240V, 50HzB, G models . . . . . . . . . . . . . . . . . . . . . . . . AC 230V, 50HzR model . . . . . . . . . . . . . . AC 110/120/220/240V, 50/60HzPower ConsumptionU, C models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110WR, A, B, G models . . . . . . . . . . . . . . . . . . . . . . . . . . . 125WStandby Power ConsumptionU, C models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7WA, B, G models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8WMaximum Power Consumption1kHz, 10% THD, 2ch, 6 (R model only) . . . . . . . . . 255WAC OutletsU, C, R, G models, Switched x 2 . . . . . . . 100W max (Total)A, B models Switched x 1 . . . . . . . . . . . . . . . . . . . 100W maxDimensions (W x H x D) . . . . . . . . . . . . . . 217 x 108 x 372mm(8-9/16 x 4-1/4 x 14-5/8)Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.4 kg (11 lbs. 14 oz)FinishU, C, R, A, G models . . . . . . . . . . . . . . . . . . . . . . Gold colorU, B, G models . . . . . . . . . . . . . . . . . . . . . . . . . . Silver colorAccessories of CRX-E400 . . . . . . . . . . . AM loop antenna x 1Indoor FM antenna x 1Remote Control x 1Battery (size UM-3, R06) x 2Audio Pin Cable x 1System Control Cable x 1* Specifications subject to change without notice.U . USA modelC . Canadian modelA . Australian modelB . British modelG . European modelR . General modelRX-E400RX-E400RX-E4005* Specifications subject to change without notice.I INTERNAL VIEWqPOWER TRANSFORMERwMAIN (6) P.C.B.eAM/FM TUNERrMAIN (2) P.C.B.tOPERATION P.C.B.yMAIN (4) P.C.B.uMAIN (1) P.C.B.iMAIN (3) P.C.B.G DIMENSIONS (RX-E400)Unit : mm (inch)217 (8-9/16)8 (5/16)100 (3-15/16)108 (4-1/4)22 (7/8)15 (9/16)335 (13-3/16)372 (14-5/8)I SPEAKER SECTION (NX-E400)Type . . . . . . . . . . . . 2way Bass-reflex Magnetic Shielding TypeDriverWoofer . . . . . . . . . . . . . . . . . . . . . . 13cm (5-1/8) Cone TypeTweeter . . . . . . . . . . . . . . . . . . . . . . . 2.5cm (1) Dome TypeFrequency Response . . . . . . . . . . . . . . . . . . . . 55Hz to 28kHzImpedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Nominal Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60WMaximum Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110WSensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87dB/2.83V,1mCrossover Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3kHzInput Terminal . . . . . . . . . . . . . . . . . . . . . . Screw/Banana TypeDimensions (W x H x D) . . . . . . . . . . . . . . 186 x 300 x 223mm(7-5/16 x 11-13/16 x 8-3/4)Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3 kg (9 lbs. 7 oz)Finish . . . . . . . . . . . . . . . . . . . . . . . . . . High Gloss Piano FinishAccessories . . . . . . . . . . . . . . . . . . . . Speaker Cable (4m) x 2RX-E4006RX-E4001. Removal of Top Covera. Remove 4 screws ( q ) and 4 screws ( w ) in Fig. 1.b. Lift the Top Cover at the rear and move it rear-ward slantingly.2. Removal of Front Panela. Disconnect 4 connectors (CB251, CB253, CB210, CB406) in Fig. 2.b. Remove 2 screws ( e ), 3 screws ( r ) and 1 plastic rivet ( t ) in Fig. 1.c.Release 2 hooks and remove the Front Panel Unit by pulling it forward.I DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.)Fig. 1qwwFig. 2qTop CoverwFront Panel UnitHookerHookerOperation P.C.B.Front Panel UnitMain (3) P.C.B.Main (2) P.C.B.CB210CB406CB253CB251Main (1) P.C.B.tRX-E400RX-E4007GServicing Positiona. Remove the Top Cover and the Front Panel Unit.b. Remove 6 screws ( y ) in Fig. 3.c. Remove 5 screws ( u ) in Fig. 3.d. Remove 3 screws ( i ) in Fig. 3.e. Remove the Power Transformer and Main P.C.B. (with the rear panel attached) from the mainchassis.f.With the rear panel attached, set the Main P.C.B on its side. At this time, set the Power Trans-former on its side as well in Fig. 4.g. Using a lead wire or the like, connect G250 of the Main (1) P.C.B. with the rear panel in Fig. 4.h. With the Front Panel Unit set on its side, connect 4 connectors (CB251, CB253, CB210, CB406)in Fig. 5.i.Connect the power cable, turn on the power and check for operation.Fig. 3yMain ChassisyuiuMain (1) P.C.B.G250Lead WirePower TransformerRear PanelFig. 4Fig. 5Front Panel UnitCB210CB406CB253CB251RX-E4008RX-E400ITEST MODESTANDBY/ON Key is pushed while pushing DISPLAY Key and AUTO/MANL Key.TEST MODE indication.PRESET/TUNING B KeyTest mode numberup.PRESET/TUNING N KeyTest mode numberdown.PRESET/BAND KeyExecute test mode.STANDBY/ON KeyPOWER OFFThe completionof test mode.POWER Off conditionTEST MODE UPTEST MODE DOWNWhen present mode iscarried out.Test mode isfinished.DISPLAYFUNCTIONPRESET/BAND Key01 DEST-B,G02 FL+CLEARDESTINATIONR (AM9k/FM:50k)R (AM10k/FM100k)AB,GU,CDisplayR9kR10kAB, GU, C(*1)03 FL CHECK04 Ver-A1.1005 SUMCaa20499.05.28TEST PROGRAM MODE FUNCTION DESCRIPTIONIndication for destinaion. (*1)All FL segments and BACKUPRAM CLEAR.All FL segments and circuit board short circuit inspection.Version information of themicrocomputer software. (*2)The date of the microcomputer software. (*2)The calculation of SUM is done andindicated after that. (*2)1st : all segments light2nd : RAM CLEAR1st : all segments light2nd : Even-numbered segments and even numbered digits are turned on.3rd : Odd -numbered segments and odd- numbered digits are turned on.It is changed to the dateindication.It is changed to versionindication.Re-calculation(*2) Contents of indication change by the microcomputer software. (Note that memories set by the user will be erased.)Also, the preset contents of the tuner are restored to the factory preset ones.PRESETEDITVOLUMERDS PSPTY RT CTPTY HOLDSTEREOAUTOTIMERSLEEPTUNEDMEMORYTIMEREDITVOLUMERDSPTYCTSTEREOAUTOTIMERPRESETPSRTPTY HOLDSLEEPTUNEDMEMORYTIMERPRESETEDITVOLUMERDS PSPTY RT CTPTY HOLDSTEREOAUTOTIMERSLEEPTUNEDMEMORYTIMERFL CHECK1st2nd3rdRX-E400RX-E4009Preset groupABCDEP1P2P3P4P5P6P7P8CAUTION : When executing Test mode No. 2 RAM CLEAR, be sure