Yamaha-RX497-rec-sm(1) 维修电路原理图.pdf

SERVICE MANUALThis 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 NOTICE100977SERVICE MANUALSTEREO RECEIVERAMP ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 16IC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1718DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 20PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 2127BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . 28SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 2932PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3343REMOTE CONTROL RAX100/RAX101 . . . . . . . 4445I CONTENTSTO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2IMPEDANCE SELECTOR . . . . . . . . . . . . . . . . . . . . . . 3FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45REMOTE CONTROL PANELS . . . . . . . . . . . . . . . . . . 5SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 67INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . 8SELF DIAGNOSIS FUNCTION . . . . . . . . . . . . . . . 915DPX-1200RX-497RX-497 2005 YAMAHA CORPORATION. All rights reseved.This manual is copyrighted by YAMAHA and may not be copied orredistributed either in print or electronically without permission. 05.11RadioFans.CN 收音机爱 好者资料库2RX-497RX-497I 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 ohms shuntedby 0.15F.AC LEAKAGETESTER OREQUIVALENTEQUIPMENTUNDER TESTINSULATINGTABLEWALLOUTLETGLeakage current must not exceed 0.5mA.GBe sure to test for leakage with the AC plug in bothpolarities.WARNING: 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.About Lead Free SolderThe P.C.B.s installed in this unit are soldered using the following solder.“CAUTION”“F251, F252 : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 8A, 125V FUSE.”CAUTIONF251, F252 : REPLACE WITH SAME TYPE 8A, 125V FUSE.ATTENTIONF251, F252 : UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE DE 8A, 125V.A VSI DE ASI DE BFUNCTI ON P. C. B.Lead Free SolderOPERATI ON P. C. B.Lead Free SolderMAI N P. C. B.Lead Free SolderXM P. C. B.Lead Free SolderLead Free SolderSide ASide BSMT REFLOW ProcessMI FLOW ProcessSolder DipAmong some types of lead free solder currently available, itis 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:1. As the melting point temperature of the lead free solder is about 30C to 40C (50F to 70F) higher than that of the leadsolder, be sure to use a soldering iron suitable to each solder.2. If lead solder must be used, be sure to remove lead free solder from each terminal section of the parts to be replaced and fromthe area around it completely before soldering, or make sure that the lead free solder and lead solder melt together fully.RadioFans.CN 收音机爱 好者资料库3RX-497DPX-1200RX-497I IMPEDANCE SELECTORWARNING:Do not change the setting of the IMPEDANCE SELECTOR switchwhen the unit power is switched on, as doing so may damagethe unit.IMPEDANCE SELECTORI FRONT PANELSM U, C modelsM R, A, G, E, L models4RX-497RX-497I REAR PANELSM U, C modelsM R modelM A model5RX-497DPX-1200RX-497M G, E modelsM L modelI REMOTE CONTROL PANELSM RAX100 (U, C models)M RAX101 (R, A, G, E, L models)6RX-497RX-497I SPECIFICATIONSAUDIO SECTIONMinimum RMS Output Power (Power Amp. Section)L/R, 20 Hz to 20 kHz, 0.04% THD, 8 ohms . . . . . . .75 W + 75 WDynamic Power Per Channel (IHF)8/6/4/2 ohms . . . . . . . . . . . . . . . . . . . . . . .105/125/150/178 WMaximum Power Per Channel (G, E models)1 kHz, 0.7 % THD, 4 ohms . . . . . . . . . . . . . . . . . . . . . . . .105 WIEC Power (G, E models)1 kHz, 0.04% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . . . .84 WMaximum Power (EIAJ) (R, L models)1 kHz, 10% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . . . . .115 WPower Band WidthL/R, 0.08% THD, 35 W, 8 ohms . . . . . . . . . . . .10 Hz to 50 kHzDamping Factor20 Hz to 20 kHz, SPEAKER-A, 8 ohms . . . . . . . . .150 or moreInput Sensitivity/Input ImpedancePHONO MM . . . . . . . . . . . . . . . . . . . . . . . . .3.0 mV/47 k-ohmsCD, etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . .185 mV/47 k-ohmsMaximum Input SignalPHONO MM, 1kHz, 0.04 % THD . . . . . . . . . . . . . . . . . . .70 mVCD, etc., 1kHz, 0.04 % THD . . . . . . . . . . . . . . . . . . . . . . .2.2 VOutput Level/Output ImpedanceSUBWOOFER . . . . . . . . . . . . . . . . . . . . . . . . . .4 V/1.2 k-ohmsZONE2 OUT . . . . . . . . . . . . . . . . . . . . . . .185 mV/1.2 k-ohmsREC OUT . . . . . . . . . . . . . . . . . . . . . . . . . .185 mV/1.2 k-ohmsHeadphone Jack Rated Output/Output ImpedanceCD, etc. 1 kHz, 185 mV, 8 ohms, 0.04% THD . . . . . . . . . .0.47 V/390 ohmsFrequency ResponseCD, etc. 20 Hz to 20 kHz . . . . . . . . . . . . . . . . . . . . . .0 0.5 dBCD, etc. PURE DIRECT ON, 10 Hz to 100 kHz . . . . . . . . . . . .0 1.0 dBRIAA Equalization DeviationPHONO MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0 0.5 dBTotal Harmonic Distortion (20 Hz to 20 kHz)PHONO MM to REC OUT (3 V) . . . . . . . . . . . . . . . . .0.02 % or lessCD, etc. to SP OUT (35 W/8 ohms) . . . . . . . . . .0.02 % or lessSignal to Noise Ratio (IHF-A Network)PHONO MM (Input shorted, 5 mV) . . . . . . . . . .82 dB or moreCD, etc. (Input shorted, 185mV) . . . . . . . . . . .108 dB or moreResidual Noise (IHF-A Network)PURE DIRECT ON . . . . . . . . . . . . . . . . . . . . . . . . . . . .100 VChannel SeparationCD, etc. (Input 5.1 k-ohms shorted)1 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65 dB or more10 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 dB or moreTone Control CharacteristicsBASSBoost/Cut (50 Hz) . . . . . . . . . . . . .+10 dB/-10 dBTurnover Frequency . . . . . . . . . . . . . . . . .350 HzTREBLEBoost/Cut (20 kHz) . . . . . . . . . . . .+10 dB/-10 dBTurnover Frequency . . . . . . . . . . . . . . . . .3.5 kHzContinuous Loudness ControlAttenuation (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30 dBGain Tracking Error0 to -60 dB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 dB or lessFM SECTIONTuning RangeU, C models . . . . . . . . . . . . . . . . . . . . . . . . .87.5 to 107.9 MHzR, L models . . . . . . . . . . . .87.5 to 108.0/87.50 to 108.00 MHzA, G, E models . . . . . . . . . . . . . . . . . . . . . 87.50 to 108.00 MHz50 dB Quieting Sensitivity (IHF)1 kHz 100% MOD.Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.0 V (17.3 dBf)Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 V (39.2 dBf)Usable Sensitivity (IHF)Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.0 V (11.2 dBf)Selectivityat 400 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 dBSignal to Noise Ratio (IHF)Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76 dBStereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70 dBHarmonic Distortion (1 kHz)Mono . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.2 %Stereo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.3 %Stereo Separation (1 kHz) . . . . . . . . . . . . . . . . . . . . . . . .45 dBFrequency Response20 Hz to 15 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . .+0.5/-2.0 dBAntenna Input . . . . . . . . . . . . . . . . . . . . . .75 ohms unbalancedAM SECTIONTuning RangeU, C models . . . . . . . . . . . . . . . . . . . . . . . . . . .530 to 1710 kHzR, L models . . . . . . . . . . . . . . . . .530 to 1710/531 to 1611 kHzA, G, E models . . . . . . . . . . . . . . . . . . . . . . . . 531 to 1611 kHzUsable Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . .300 V/mAntenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Loop antennaGENERALPower SupplyU, C models . . . . . . . . . . . . . . . . . . . . . . . . . . AC 120 V, 60 HzR model . . . . . . . . . . . . . AC 110/120/220/230-240 V, 50/60 HzA model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC 240 V, 50 HzG, E models . . . . . . . . . . . . . . . . . . . . . . . . . . AC 230 V, 50 HzL model . . . . . . . . . . . . . . . . . . . . AC 220/230-240 V, 50/60 HzPower Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 WStandby Power Consumption (reference) . . . . . . . . . . . . 0.1 WMaximum Power Consumption (R moel)1 kHz, 8 ohms, 10% THD . . . . . . . . . . . . . . . . . . . . . . . 400 WAC Outlet2 Switched OutletR model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 W Max. totalU, C, G, E, L models . . . . . . . . . . . . . . . . . . 100 W Max. total1 Switched OutletA models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 W Max.Dimensions (W x H x D) . . . . . . . . . . . . . . 435 x 151 x 308 mm(17-1/8 x 5-15/16 x 12-1/8)Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.7 kg (19 lbs 3 oz)Finish . . . . . . . . . . . . . .Black Color (U, C, R, A, G, E, L models)Titanium Color (R, G, E, L models)Gold Color (L model)Accessories . . . . . . . . . . . . . . . . . . . . . . . .Remote Control x 1Battery (AA, R6, UM-3) x 2Indoor FM Antenna x 1AM Loop Antenna x 1* Specifications subject to change without notice.VIDEO SECTIONVideo Signal TypeU, C, R models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .NTSCA, G, E, L models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PALVideo Signal Level . . . . . . . . . . . . . . . . . . . . .1 Vp-p/75 ohmsVideo Maximum Input Level . . . . . . . . . . . . . .1.5 Vp-p or moreVideo Signal to Noise Ratio . . . . . . . . . . . . . . . .50 dB or moreMonitor Out Frequency Response . . . .5 Hz to 10 MHz, -3 dB7RX-497DPX-1200RX-497Unit : mm (inch)DIMENSIONSI INTERNAL VIEW435 (17-1/8)151 (5-15/16)130 (5-1/8)267 (10-1/2)21(13/16)18.5(3/4)22.5(7/8)308 (12-1/8)qwe rty uio!1!2!0!6!5!4!8!6!7!3!3200!4!51!9U . USA modelC . Canadian modelR . General modelA . Australian modelG . European modelE . South European modelL . Singapore modelqOPERATION (12) P.C.B. (A, G, E, L models)wMAIN (4) P.C.B. (R, L models)eMAIN (2) P.C.B.rMAIN (3) P.C.B.tXM P.C.B. (U, C models)yMAIN (1) P.C.B.uMAIN (5) P.C.B.iFUNCTION (4) P.C.B.oFUNCTION (1) P.C.B.!0FUNCTION (3) P.C.B.!1FUNCTION (2) P.C.B.!2OPERATION (13) P.C.B.!3OPERATION (6) P.C.B.!4OPERATION (10) P.C.B.!5OPERATION (3) P.C.B.!6OPERATION (2) P.C.B.!7OPERATION (1) P.C.B.!8OPERATION (8) P.C.B.!9OPERATION (5) P.C.B.0OPERATION (7) P.C.B.1OPERATION (4) P.C.B.2OPERATION (9) P.C.B. 2005 XM Satellite Radio Inc. All rights reserved. All other trademarks are the property of their respective owners.8RX-497RX-497I DISASSEMBLY PROCEDURES Remove parts in disassembly order as numbered. Disconnect the power cable from the AC outlet.Fig. 11. Removal of Top Covera. Remove 4 screws ( q ), 1 screw ( w ) and 4 screws( e ). (Fig. 1)b. Slide the Top Cover rearward to remove it. (Fig. 1)2. Removal of Front Panel Unita. Remove 5 knobs (INPUT, BASS, TREBLE, BALANCEand LOUDNESS).b. Remove 1 screw ( r ) and then remove the SupportTop. (Fig. 1)c. Remove 7 screws ( t ) and then remove the FrontPanel Unit. (Fig. 1)3. Removal of Plate SideRemove 2 push rivets ( y ) and then remove the PlateSide L/R. (Fig. 1)4. Removal of Sub Chassis Unita. Remove 2 screws ( u ) and then slide the Sub ChassisUnit forward. (Fig. 1)b. Loosen the harness fixture fixing the cable.c. Remove connectors CB103, CB401, CB404, CB506,CB606 and CB611 and then remove the Sub ChassisUnit. (Fig. 1)qqwerttyyuuKnobKnobTop CoverSub Chassis UnitPlate Side LPlate Side RCB404CB103CB506CB606CB611CB401Support TopFront Panel Unit9RX-497DPX-1200RX-497I SELF DIAGNOSIS FUNCTIONThis product has a built-in self diagnosis function (DIAG) to facilitate inspection, measurement and determination of a faultyitem, if any. There are 8 DIAG menu items, each having sub-menu items.No. DIAG menuSub-menu1DISPLAY CHECK1. VFD CHECK (Initial display)2. VFD DISP OFF (All segments OFF)3. VFD DI