Onkyo-TA-R77-维修手册

TA-R77SERIAL NO.3144ONO。SERVICE MANUALSTEREO CASSETTETAPE DECKMODEL TA-R77UDN,UDC,UD120V AC,60HzUGV,UG220V AC,50HzUW120or220VAC,50/60HzUQA,UQB240V AC,50HzSAFETY-RELATED COMPONENT WARNING!!SPECIFICATIONSCOMPONENTS IDENTIFIED BY MARK ON THETrack system:4-track,2-channel stereoSCHEMATIC DIAGRAM AND IN THE PARTS LIST ARERecording System:AC biasCRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.Erasing System:AC eraseREPLACE THESE COMPONENTS WITH ONKYO PARTSTape Speed:4.8 cm/secWHOSE PARTS NUMBERS APPEAR AS SHOWN IN THISWow and Flutter:0.040(WRMS)MANUAL.Frequency Response:20-16,000 Hz (Normal)(30-15,000Hz±3dB)MAKE LEAKAGE-CURRENT OR RESISTANCE20-18,000 Hz(High)MESUREMENTS TO DETERMINE THAT EXPOSED PARTS(30-17.000Hz±3dB)ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIR-20-20,000Hz(MetaCUIT BEFORE RETURNING THE APPLIANCE TO THE(30-18.000Hz±3dB)CUSTOMER.S/N Ratio:Dolby NR out:60dB (metalposition tape)A noise reduction of 10 dBabove 5 kHz and 5 dB at 1 kHzis possible with Dolby B.Anoise reduction of 20 dB at5 kHz is possible with Dolby C.Input Jacks:Line IN:2Minimum input level:50 mVO☒O.Input impedance:50 kohmsDIN Jack:1Minimum input level:AUDIO COMPONENTS0.1 mV/1 kohmInput impedance:2.7 kohms