Aiwa-TPR920-tape-维修说明书手册含电器原理图

FM/SW/MW STEREORADIOCASSETTE RECORDERMODEL TPR-920UAIWA(SERVICE MANUAL】isoSet using ISO screwsDATE OF ISSUE 26/12/1977SPECIFICATIONSGENERALSemiconductors:TAPE RECORDER SECTION3 IC's,42 transistors,20 diodes2 LED's,1 FETTape speed:4.75cm/sec±3%Recording system:AC bias(9 transistors,8 diodes,1 IC,1 FETfor tuner section)Erasing system:Power source:Batteries,DC 9V (UM-1 x 6)Record bias frequency:AC eraseCar battery (thru car adapter)Distortion:52±1kHz(AFC:OFF)1.5±1.0%(atPB)AC120V 60 Hz2.0±1.0%(at RPBPower output:2 watts per channel,Min.RMS atFrequency responseNORMAL:50~12 kHz8 ohms,from 70 Hz to 10 kHz.at PB,DIN OUTCro,50~14kHzwith no more than 10%TotalSignal to noise ratio:(Un-Weighted)3noneoimornomat PB55/52±4dB(DC/AC)Power consumption:at RPBErasing ratio:48/45±5dB(DC/AC)Speakers:120mm2×265/60*5 dB (NORMAL/CrO,Dimensions:17-9/16(W×11-1/8"(H)xSeparation35±5dB(at RPB)Weight:4-5/8(D1(445×287×117mmlewind time:Super permalloy head805 sec.(w/C-60 cassette)Supplied accessories:12.3 Ibs (5.6 kg)(w/batteries)AC power cordx 1Mechanical full auto-stopCassette taBatteries (OM-1)x 1×6Less than 10 sec.Head cleaning stickPinch roller pressure:350±30gErase plugWow Flutter:0.07±0.04%(WRMS)Take-up torque:50±10g-cmRADIO SECTIONFF rewind torque:100+20Circuit:Superheterodyne-109-cmFrequency ranges:FM 87~109 MHzSW 3.1~12.3 MHzIntermediate frequency:MW5151650kHzFM 10.7 MHzSW.MW 455 kHzSensitivity:FM(S/N 6 dB)4±3dB(at88MHzl3±3dB(at98.108MHzSW35±4dB(at3.2MHz)28±3dB(at8MHzl24+3dB (at 12 MHz)MW40+5 dB (at 600 kHz)39±4dB(at1000kHzFM stereo separation:38±4dB(at1400kHz】30±5dB(at1kHzAntennas:Built-in whip antenna for FM,SWBuilt-in ferrite bar antenna for MW.The specifications and external appearance of this set areExternal antenna terminal for FMsubject to change without prior notice.