QT-90W维修手册含电器原理图

QT-90WSHARPSERVICE MANUALNo.S6143QT90W///STEREO RADIO CASSETTE RECORDERMODELQT-90WIn the interests of user-safety the set should be restored to itsoriginal condition and only parts identical to those specified shouldbe used.CONTENTSPageSPECIFICATIONS...VOLTAGE SELECTION...…1AC POWER SUPPLY CORD AND AC PLUG ADAPTORNAMES OF PARTS.........22HOWTO SET THE POINT"OON TUNER DIAL MEMORY.............2DISASSEMBLY............3REMOVING AND REINSTALLING THE MAIN PARTS.4ADJUSTMENT..6NOTES ON SCHEMATIC DIAGRAM9TYPES OF TRANSISTOR AND LED9VOLTAGESCHEMATIC DIAGRAM....10WIRING SIDE OF P.W.BOARD12BLOCK DIAGRAM OF IC....14PARTS GUIDE/EXPLODED VIEWSPECIFICATIONS■General■RadioPower sourceAC110-127/220-240V,50/60HzFrequency rangeFM:88-108 MHzDC 15 V['D'size (UM/SUM-1,R20 or HP-2)battery x 10]SW1:2.37.3MzPower consumption40WSW2:7.3-22MHzW:526.5-1.606.5kHzOutput power■Tape recorderSpeakers8 cm (3-1/8')full range speaker x 4Output terminalHeadphones:16-50 ohms (recommended:32 ohms)Frequency response 60-12,000 Hz (Normal tape)Input terminalSignal/noise ratio40 dBWow and flutter0.3 %(WRMS)Dimensionsdth:520mm(20-1/2)MotorDC 12 Velectric governorHeight:191 mm (7-1/2)Depth:216mm(8-1/2)Bias systemAC biasErase systemWeight4.7 kg (10.4 Ibs.)without batteriesMagnet eraseSpecifications for this model are subject to change without prior notice.VOLTAGE SELECTIONBefore operating the unit on mains,check the preset voltage.If the voltage is different from your local voltage,adjust the voltageas follows.Slide the selector with a screwdriver to the appropriate voltage number.(AC 110 -127 V or AC 220-240 V)This document has been published to be usedSHARP CORPORATIONfor after sales service onlyThe contents are subject to change without notice.