HarmanKardon-AVR7300-avr-sm1维修电路原理图.pdf

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1、AVR 7300 Audio/VideoReceiverSERVICE MANUALPower for the Digital RevolutionRadioFans.CN 收音机爱 好者资料库TECHNICAL SPECIFICATIONS 61Technical SpecificationsAudio SectionStereo Mode Continuous Average Power (FTC)125 Watts per channel, 20Hz20kHz, 0.07% THD, both channels driven into 8 ohms5/7 Channel Surround

2、 Modes Power Per Individual ChannelFront L&R channels:110 Watts per channel, 0.07% THD, 20Hz20kHz into 8 ohmsCenter channel:110 Watts, 0.07% THD, 20Hz20kHz into 8 ohmsSurround (L & R Side, L & R Back) channels:110 Watts per channel, speaker jack : unload(no dummy) status,Adjustment flowa. After powe

3、r onb. Take alignment about to 05mVChannelCheck pointAdjustment positionAdjustment LimitNoteFRONT L CHFL SPEAKERVR11(3channel AMP) 010mVFLREAR L CHSL SPEAKERVR21(3channel AMP) 010mVSLSURRBACK L CHSL SPEAKERVR31(3channel AMP) 010mVSBLREAR R CHSR SPEAKERVR41(4channel AMP) 010mVSRSURRBACK R CHSBR SPEAK

4、ERVR51(4channel AMP) 010mVSBRFRONT R CHFR SPEAKERVR61(4channel AMP) 010mVFLCENTER CHCTR SPEAKERVR71(4channel AMP) 010mVCTc.Passed about 5 Min. Do it again as 020mV2Idle - adjustment* .Function : 8CH DIRECT INPUT.Volume level : minimum.Test position : refer to the below.Adjustment flowa.Assemble AMP

5、BD to Heat Sinkb.After Power on, take alignment about 6.07.0mV.ChannelCheck pointAdjustment positionAdjustment LimitNoteFRONT L CHP101(R172)VR12 (3channel AMP)12.0mV13.0mVFLREAR L CHP201(R272)VR22 (3channel AMP)12.0mV13.0mVSLSURRBACK L CHP301(R372)VR32 (3channel AMP)12.0mV13.0mVSBL11.0mV13.0mVREAR R

6、 CHP401(R472)VR42 (4channel AMP)12.0mV13.0mVSRSURRBACK R CHP501(R572)VR52 (4channel AMP)12.0mV13.0mVSBRFRONT R CHP601(R672)VR62 (4channel AMP)12.0mV13.0mVFLCENTER CHP701(R772)VR72 (4channel AMP)12.0mV13.0mVCTc.Passed about 5 Min. Do it again as 12.0mV13.0mV.3Adjustment PositionFL Offset AdjFL Idle A

7、djSL Offset AdjSL Idle AdjSBL Idle AdjSBL Idle AdjSR Offset AdjSR Idle AdjSBR Offset AdjSBR Idle Adj4Check PositionFR Offset AdjFR Idle AdjCT Offset AdjCT Idle AdjFL Idle Check PositionSL Idle Check PositionSBL Idle Check PositionSR Idle Check PositionSBR Idle Check PositionFR Idle Check PositionCT Idle Check Position47R 1WRev.NO. 2