TM-231A_E_serv维修手册含电器原理图

144MHz FM TRANSCEIVERKENWOODTM-231A/ESERVICE MANUAL1989-3 PRINTED IN JAPANB51-3825-00(0)1296Knob (VFO,MR,MHz)Microphone*Panel ass'y"K27-3035-04)×3T91-(A20-)Front glass(B10-1114-03]Metallic cabinet (Upper)(A01-1065-03)Knob (LOW)(K27-3037-04)Knob (POWERK27.3038-04)KENWOOD￥69Knob (MAIN)Knob (CALL,F,SHIFT,TONE,REV,DRS)8P metal socket (MIC)K29-3156-041K27-3036-04)X6(E06-0858-15)Knob(VOL,SQL)K29-3157-041×2Photo is TM-231A.Refer to parts list on page 13.CONTENTSCIRCUIT DESCRIPTION............…2SCHEMATIC DIAGRAM....35DESCRIPTION OF COMPONENTS.......9TERMINAL FUNCTIONS38PARTS LIST*4414*12BLOCK DIAGRAM…39EXPL0 DED VIEW…LEVEL DIAGRAM.............…4124DRU-1 (DIGITAL RECORDING UNIT)...................42ADJUSTMENT.25MC-44 (MULTI FUNCTION MICROPHONE).........49PC BOARD VIEWS/CIRCUIT DIAGRAMMC-44DM/MC-44DMELCD ASS'Y(B38-0311-15).29(MULTI FUNCTION MICROPHONE WITH AUTOPATOH>..50PLLX58-3470-00)…30MC-44E (MULTI FUNCTION MICROPHONE)......51APC0X59-3130-00).32TSU-6 (CTCSS UNIT)..52M1 C AMP (X59-3610-00)..32SPECIFICATIONS....BACKOVERTX-RX UNIT (X57-3310-XX).33Downloaded byRadioAmateur.EU