Yamaha-RX797-rec-sm(2) 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 NOTICE100979SERVICE MANUALSTEREO RECEIVERIC DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1718DISPLAY DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19PRINTED CIRCUIT BOARD . . . . . . . . . . . . . . . . 2028PIN CONNECTION DIAGRAM . . . . . . . . . . . . . . . . . 29BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . 30SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . 3134PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3543REMOTE CONTROL RAX100/RAX101 . . . . . . . . . . 44REMOTE CONTROL RAX17 . . . . . . . . . . . . . . . . . . 45REMOTE CONTROL RAX18 . . . . . . . . . . . . . . . . . . 46I CONTENTSTO SERVICE PERSONNEL . . . . . . . . . . . . . . . . . . . . 2IMPEDANCE SELECTOR . . . . . . . . . . . . . . . . . . . . . . 3FRONT PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3REAR PANELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45REMOTE CONTROL PANELS . . . . . . . . . . . . . . . . . . 5SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 67INTERNAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . 8SELF DIAGNOSIS FUNCTION . . . . . . . . . . . . . . . 915AMP ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 16DPX-1200RX-797RX-797 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. 05.10RadioFans.CN 收音机爱 好者资料库2RX-797RX-797I 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-797DPX-1200RX-797I IMPEDANCE SELECTORWARNING:Do not change the setting of the IMPEDANCE SELECTOR switchwhen the unit power is switched on, as doing so may damagethe unit.I FRONT PANELSM U, C modelsM R, A, G, E, L modelsIMPEDANCE SELECTOR4RX-797RX-797I REAR PANELSM U, C modelsM R modelM A model5RX-797DPX-1200RX-797M G, E modelsM L modelI REMOTE CONTROL PANELSM RAX100(U, C models)M RAX101(R, A, G, E, L models)M RAX17(U, C models)M RAX18(R, A, G, E, L models)6RX-797RX-797I SPECIFICATIONSAUDIO SECTIONMinimum RMS Output Power (Power Amp. Section)L/R, 20 Hz to 20 kHz, 0.019% THD, 8 ohms . . . .100 W + 100 WL/R, 20 Hz to 20 kHz, 0.03% THD, 6 ohms . . . . .120 W + 120 WDynamic Power Per Channel (IHF)8/6/4/2 ohms . . . . . . . . . . . . . . . . . . . . . . .140/170/220/290 WMaximum Power Per Channel (G, E models)1 kHz, 0.7 % THD, 4 ohms . . . . . . . . . . . . . . . . . . . . . . . .160 WIEC Power (G, E models)1 kHz, 0.019% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . .115 WMaximum Power (EIAJ) (R, L models)1 kHz, 10% THD, 8 ohms . . . . . . . . . . . . . . . . . . . . . . . . .145 W1 kHz, 10% THD, 6 ohms . . . . . . . . . . . . . . . . . . . . . . . . .170 WPower Band WidthL/R, 0.03% THD, 50 W, 8 ohms . . . . . . . . . . . .10 Hz to 50 kHzDamping Factor20 Hz to 20 kHz, SPEAKER-A, 8 ohms . . . . . . . . .240 or moreInput Sensitivity/Input ImpedancePHONO MM . . . . . . . . . . . . . . . . . . . . . . . . .3.0 mV/47 k-ohmsCD, etc. . . . . . . . . . . . . . . . . . . . . . . . . . . . .200 mV/47 k-ohmsMAIN IN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 V/30 k-ohmsMaximum Input SignalPHONO MM, 1kHz, 0.019 % THD . . . . . . . . . . . . . . . . . .70 mVCD, etc., 1kHz, 0.019 % THD . . . . . . . . . . . . . . . . . . . . . .2.2 VOutput Level/Output ImpedanceSUBWOOFER . . . . . . . . . . . . . . . . . . . . . . . . . .4 V/1.2 k-ohmsPRE OUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 V/1.2 k-ohmsZONE2 OUT . . . . . . . . . . . . . . . . . . . . . . . . . . .1 V/1.2 k-ohmsREC OUT . . . . . . . . . . . . . . . . . . . . . . . . . .200 mV/1.2 k-ohmsHeadphone Jack Rated Output/Output ImpedanceCD, etc. 1 kHz, 200 mV, 8 ohms, 0.015% THD . . . . . . . . .0.47 V/470 ohmsFrequency ResponseCD, etc. 20 Hz to 20 kHz . . . . . . . . . . . . . . . . . . . . . .0 0.5 dBMAIN IN, 20 Hz to 20 kHz . . . . . . . . . . . . . . . . . . . . .0 0.5 dBCD, CD DIRECT AMP 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) . . . . . . . . . . . . . . . .0.008 % or lessCD, etc. to PRE OUT (1V) . . . . . . . . . . . . . . . .0.007 % or lessCD, etc. to SP OUT (50 W/8 ohms) . . . . . . . . .0.012 % or lessSignal to Noise Ratio (IHF-A Network)PHONO MM (Input shorted, 5 mV) . . . . . . . . . .87 dB or moreCD, CD DIRECT AMP ON,(Input shorted, 200mV) . . . . . .110 dB or moreResidual Noise (IHF-A Network)CD DIRECT AMP ON . . . . . . . . . . . . . . . . . . . . . . . . . . .30 VPURE DIRECT ON . . . . . . . . . . . . . . . . . . . . . . . . . . . .110 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 ConsumptionU, C models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 W, 360 VAR, A, G, E, L models . . . . . . . . . . . . . . . . . . . . . . . . . . . 260 WStandby Power Consumption (reference) . . . . . . . . . . . . 0.1 WMaximum Power Consumption (R model)1 kHz, 6 ohms, 10% THD . . . . . . . . . . . . . . . . . . . . . . . 650 WAC Outlet2 Switched OutletR model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 W Max. totalU, C, G, E, L models . . . . . . . . . . . . . . . . . . 100 W Max. total1 Switched OutletA models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 W Max.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-797DPX-1200RX-797U . USA modelC . Canadian modelR . General modelA . Australian modelG . European modelE . South European modelL . Singapore modelUnit : mm (inch)DIMENSIONS435 (17-1/8)151 (5-15/16)130 (5-1/8)349 (13-3/4)21(13/16)18.5(3/4)21.5(7/8)389 (15-1/16)Dimensions (W x H x D) . . . . . . . . . . . . . . 435 x 151 x 389 mm(17-1/8 x 5-15/16 x 15-5/16)Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10.9 kg (24 lbs)Finish . . . . . . . . . . . . . . . .Black color (U, C, R, A, G, E, L moels)Titanium color (G, E, L moels)Accessories . . . . . . . . . . . . . . . . . . . . . . . .Remote Control x 1Zone2 Remote Control x 1Battery (AA, R6, UM-3) x 2Battery (AAA, R03, UM-4) x 2Power Cable x 1Indoor FM Antenna x 1AM Loop Antenna x 1* Specifications subject to change without notice.I INTERNAL VIEWqMAIN (2) P.C.B.wMAIN (3) P.C.B.eMAIN (8) P.C.B.rMAIN (4) P.C.B.tMAIN (5) P.C.B. (R, L models)yMAIN (1) P.C.B.uXM P.C.B. (U, C models)iFUNCTION (4) P.C.B.oFUNCTION (5) P.C.B.!0FUNCTION (3) P.C.B.!1OPERATION (13) P.C.B.!2FUNCTION (2) P.C.B.!3FUNCTION (1) P.C.B.!4OPERATION (6) P.C.B.!5OPERATION (10) P.C.B.!6MAIN (7) P.C.B.!7OPERATION (3) P.C.B.!8MAIN (6) P.C.B.!9OPERATION (2) P.C.B.0OPERATION (7) P.C.B.1OPERATION (1) P.C.B.2OPERATION (8) P.C.B.3OPERATION (9) P.C.B.4OPERATION (5) P.C.B.5OPERATION (11) P.C.B.6OPERATION (4) P.C.B.qw e rty uio!0!1!2!3!4!4 0123456!5!7!5!6!7 !8!9!9 2005 XM Satellite Radio Inc. All rights reserved. All other trademarks are the property of their respective owners.8RX-797RX-797I DISASSEMBLY PROCEDURES1. 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 6 knobs (INPUT, REC OUT, BASS, TREBLE,BALANCE, LOUNESS).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) Remove parts in disassembly order as n