accuphase—e204-(schematic)维修电器原理图

P.I.A.,Rosenweg 6,D-64231 Weiterstadt52◆CIRCUIT ADJUSTMENT(回路調整)STEPADJUST ITEMADJUSTREMARKS又于7焉整项目TE装出TPOINT潤整前所调格·偏EQUALIZER AMP ASSEMBLY (711-0010-00)3ラ折7ブAssyDC Balance of "L"REC OUT“L”onEgualizer AmpV.O:'Meter Set rangeVR1437时7>"LDCテ又to less than DC0.3VAdjust for -O"DC Balance of "R"于大9一reading of V.O.MeterREC OUT“R"om专大)n指示0腾铁2DC0.3V以下krear panelVR2s，REC OUT“RPOWER AMP ASSEMBLY(717-0012-00)7-了yブAss'yBias Current Adj.for L ch(1)and (2)terminals of1Cement ResistorVR1Lch:<亻了又面流V.O.Meter Set rangeto less than DC0.3V七>卜抵抗n尚端1山上2Adjust for DC +44mV-于又9Bias Current Adj.for R ch(1)and (2)terminals ofDC0.3V以下V.o.2Cement ResistorVR2Rch:sAT天E流DC+V两整名七卜括抗(1}(2Notes ;1 Internal input resistance of volt-ohm meter should be higher than 10k ohms于又夕一柱、入力抵抗10k2以上飞空书使下总。2 Following readjustment is not required when a whole Print Circuit Board has been changed.However,in case of any component parts on the Printed Circuit Board having been changed,apply readjustmentaccording to the following table.大典整生、通%PC水-老变换L无培合注不樱℃寸机.PC水一r部品老交换L上.我餐气调整左行3文下ě。3 In the DC Balance adjustment,though a normal volt-ohm meter can only indicate the offset balance,with a very small amount of meter scale,adjust it carefully so as the meter to indicate exact ZEROpotential.DC心夕>又《0 FFSFT)调整社、于又夕一見上場合仕微小本範阻℃L办動a丰世人)℃、注元学浅夕指针全《助力在、程度把调歌LT下芒↓。Power Amp AssemblyEqualizer Amp Assembly7-了Ass'yラ17y7As3y(717-0012-00)(711-0010-00)VR2VRITarminals ofVR2