Akai-DX57-tape-维修说明书手册含电器原理图

GX-67AKAI SERUICE MANUALAKAI0MODEL GX-67STEREO CASSETTE DECKMODELGX-67SPECIFICATIONSMODELDX-57Track System..............4 track 2 channel StereoS/N ratio........57 dB(Measured via MetaHeadstape with peak recordingGX-67Erase Head x 1level)LC-OFC SGX Head forDolby B type NR ................Improves up to 5 dB atrecording x 1switch ON:1 kHz.10 dB above 5 kHzLC-OFC SGX Head forDolby C type NR .Improves up to 15 dB atplayback x 1switch ON:500 Hz,20 dB at 1 kHzDX.57Erase Head x 1to 10 kHzHard permalloy Head forTotal Harmonic Distortion....1.0%recording x 1Input Level/ImpedanceHard permalloy Head forLine.70 mV/47 kohmsplayback x 1Output Level/ImpedanceMotorsElectronic speed controlled DCLin.388 mV /2 kohmsmotor for capstan x 1Headphones.....1.3mW/(8ohms)DC motor for reel drive x 1Power Requirements .............AC 220 V-230 V,50 HzDC motor for tape eject/loadingfor Europe except UK×1(GX-67only)AC 240 V,50 Hz forUKWow&Flutter.…0.045%WRMS)AC110V.120V,0.08%(DIN220V-240V,50/60HzTape winding time...80 sec.(C-60)Convertible for otherFrequency ResponsecountriesGX-67Normal ...15 Hz to 18,000 Hz 3dBDimensions.425WM×135(H)×351CrO2…15Hzto18,000Hz±3dB(D)mmMetal .......15 Hz to 21,000 Hz3dBWeightDX-57Normal ...15 Hz to 17,000 Hz 3dBGX-675.4kgCrO2 ......15 Hz to 17,000 Hz+3dBDX-57..5.3kgMetal.…15Hzto20,000Hz±3dBStandard accessoriesConnection cords....…X2Remote control unit…X1Dry batteries R6 (AA)size ....x 2Operetor's manual ...10 dBs =0.775VFor improvement purposes,specifications and design are subject to change without notice.Dolby noise reduction and HX Pro headroom extension manufactured under license from Dolby LaboratoriesLicensing Corporation.HX Pro originated by Bang&Olufsen."DOLBY",the double-D symbol and "HX Pro"are trademarks of Dolby Laboratories Licensing Corporation.