索尼XR-4890维修手册含电器原理图

XR-4890SERVICE MANUALUS ModelCanadian ModelPhoto:XR-4890Model Name Using Similar MechanismXR-C5100Tape Transport Mechanism TypeMG-25F.136SPECIFICATIONSAUDIO POWER SPECIFICATIONSPOWER OUTPUT AND TOTAL HARMONIC DISTORTION13 watts for XR-4890 per channel minimum continuousaverage power into 4 ohms,4 channels driven from 20 Hzto 20 kHz with no more than 1 total harmonic distortion.Other specificationsCassette player sectionAMTuning range530-1.710kHz4-track 2-channel stereoAntenna terminal0.08%,WRMSIntermediate frequeney10.7 MHz/450 kHzFrequency response30-18,000HzSensitivity30uVSignal-to-noise ratioCassette typeTYPE II,IV61dBPower amplifier sectionTYPEI58dBOutputsSpeaker outputs(sure seal connectors)Speaker impedance4-8uhmsTuner sectionMaximum power output35 Wx4(at 4 ohms)FMTuning range87.5-107.9MH2Antenna terminalExternal antenna connectorrmediate frequency10.7 MHzUsable sensitivity9dB时Selectvity75 dB at 400 kHzSignal-to-noise ratio65 dB (stereo).68 dB (mono)Harmonic distortion at 1 kHz0.7%(stereo).0.4'%(mono)Continued on next page-Separation35 dB at 1 kHzFrequency response30-15,000HzFM/AM CASSETTE CAR STEREO■MICROFILMSONY