sony_tc-wr720_wr720a_sm维修操作说明书手册

TC-WR720/WR720ASERVICE MANUALUS ModelCanadian ModelE ModelTC-WR720AAEP ModelTC-WR720This photo is TC-WR720.Model Name Using Similar Mechanism TC-WR620SPECIFICATIONSTape Transport Mechanism TypeTCM-190RB12Recording system4-track 2-channel stereoFast winding timeApprox.90 sec.(with HF-60 cassette)OutputBiasAC biasLine outputsRated output level0.44V(-5dB)atSignal-to-noise ratio (NAB,at peak level)(phono jacks)a load impedanceDolby NR switchof 47kohmsOFFB.TYPEC.TYPELoad impedanceOver 10kohmsCassetteONONType IV(Sony METAL-ES)Output level58dB66dB73dBHeadphones0.3mW at a load(stereo phono jack)impedance of 32Type ll (Sony UX-S)57dB65dB72dBohmsType I(Sony HF.S)55dB63dB70dBWR720)General54dBPower requirements120V AC,60Hz (US,Canadian model)(WR720A)220V AC,50/60Hz (AEP model)120,220,240,50/60Hz(E model)Total harmonic distortionPower consumption33 watts1.0%(with Sony METAL-ES cassettes)DimensionsApprox.430×135×285mm(w/h/d)Frequency response (DOLBY NR OFF)(17×53/,×11/.inches)Type IV cassette 30-18,000Hz (3dB)(WR720)including projecting parts and controls(Sony METAL-ES)30-15,000Hz(±3dB)(WR720A)WeightApprox.5kg (11 Ibs 1 oz)(WR720)30-14,000Hz (OVU recording)(WR720)Approx.4.6kg (10 Ibs 3 oz)(WR720A)30-13,000Hz (OVU recording)(WR720A)Supplied accessories Audio connecting cord(2)Type ll cassette30-17,000Hz(±3dB)(WR720)Remote commander (RM-900W)(Sony UX-S)20-15,000Hz(±3dB)(WR720A)(E model only)Conversion adaptor (E model only)Type I cassette30-15,000Hz(±3dB)(WR720)(Sony HF.S)30-14,000Hz(±3dB)(WR720A)Design and specifications subject to change without notice.Wow and flutter0.07%WRMS (NAB)InputsLine inputsSensitivity77.5mV(-20dB)(phono jacks)Input impedance50kohmsSTEREO CASSETTE DECK使奖丝附毛超0CSONYF在若能60彩注