Kenwood KDC-X715 Service Manual

Also see for KDC-X715: Instruction manual

Contents

KDC-X715MICROCOMPUTER'S DESCRIPTION3System μ-com : UPD784217GC (X25-)Terminal descriptionNo. Pin name Function I/O Description Processing Operation12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849P120/RTP0P121/RTP1P122/RTP2P123/RTP3P124/RTP4P125/RTP5P126/RTP6P127/RTP7VddX2X1VssXT2XT1RESETP00/INTP0P01/INTP1P02/INTP2/NMIP03/INTP3P04/INTP4P05/INTP5P06/INTP6AVddAVref0P10/ANI0P11/ANI1P12/ANI2P13/ANI3P14/ANI4P15/ANI5P16/ANI6P17/ANI7AVssP130/ANO0P131/ANO1AVref1P70/RxD2/SI2P71/TxD2/SO2P72/ASCK2/SCK2P20/RxD1/SI1P21/TxD1/SO1P22/ASCK1/SCK1P23/PCLP24/BUZP25/SI0P26/SO0P27/SCK0P80/A0P81/A1CHCON1CH_MUTEREQHILL_ONNCCD_SW2CD_SW1NCVddX2X1VssXT2XT1RESETCH_RSTR_CLKREQCNCNCNCSC_REQAVddAVrefPHONESRM_SW1NOISESMETERIF_MODENCM_MUTE_RM_MUTE_LAVssEXT_AMPM_RSTDATACDATAHCH_CLKL_DATAL/SC_DATAL_DATAS/MC_DATAL_CLK/MC_CLKM_STOPBEEPPLL_CEPLL_DATAPLL_CLKCD_SW3LO/EJOIOOOIIO------IOIII/OI/OI/OI--IIIIIIII-OO-IOI/OII/OI/OOOOI/OOIOChanger 1 controlChanger muting inputHandshake request to changersIllumination outputOpen12cm DISC detectionLoading detectionOpenPositive power supplyMain clock connectionMain clock connectionGNDSub clock connectionSub clock connectionReset inputChanger reset outputRDS clock inputHandshake request from changer---Handshake request from panel m-comA/D analog power supplyA/D reference voltage inputPHONE detection terminalSRM position detectionFM noise detectionFM signal meter detectionK2I IF selectorGNDMute request from mechanismMute request from mechanismA/D GNDEXT_AMP controlReset output to mechanismD/A reference voltage inputData line from changerData line to changerClock line from/to changerData line from LCD driverData line to LCD driverClock line to LCD driverStop request to mechanismBeep outputCE output to PLLData in/out with PLLClock output to PLLSwitch detection DOWNLoading/Eject controlActive : HiMUTE Requested : HiActive : LoActive : HiON : LoON : LoActive : LoActive : LoActive : Lo1V or less : PHONE2.5V or more : NAVI MUTEOpen : HiAnalog inputAnalog inputWide : Hi/Narrow : LoMute requested : LoMute requested : LoReset : LoStop Requested : LoActive : HiON : HiLoading : Lo/Eject : Hi