Kenwood TK-2302 Service Manual

Also see for TK-2302: Instruction manual Instruction manual Instruction manual

Contents

TK-2302/2302( V ) /230613MCU: R5F212CCKCMB (TX-RX unit IC306)Pin No. Signal Name I/O Function1 5T_C O 5T control2 PLL_STB O PLL strobe3 5C_C O 5C control4 5R_C O 5R control5 W/N O Wide/Narrow switch6 MODE I No function7 AF_CONT O Speaker mute8 BSHIFT O Beat shift control9 RESET I MCU reset10 XOUT O MCU clock (14.746MHz)11 VSS - GND12 XIN I MCU clock (14.746MHz)13 VCC I Power supply input14 QTTCXO O QT/DQT output15 QTVCO O QT/DQT output16~21 AUX6~AUX1 I/O No function22 MIC_MUTE O MIC mute23 AF_MUTE O No function24~32 N.C O No function33 RXDATA I No function34 TXDATA O No function35 OPTDET I Headset detect36 TX_SW O TX VCO switch37 RX_SW O RX VCO switch38 LEDRX O Green LED control39 LEDTX O Red LED control40 APC_SW O APC switch41 DC_SW O APC discharge switch42 STD I Baseband IC data input43 1/2 OSC O Baseband IC clock (3.6864MHz)44 INT I No function45 TXD O Serial data outputSEMICONDUCTOR DATAPin No. Signal Name I/O Function46 RXD I Serial data input47 DIR O Baseband IC data output48 DI/O I/O Baseband IC data input / output49 DTRLOADN O Baseband IC data output50 TDATA/DTRCLK O Baseband IC data output51 SCLK O Serial clock for baseband IC52 TCLK/DTRDO I Baseband IC data input53 RDF/FD I Baseband IC data input54 MDSW I No function55 PTT I PTT switch input56 SIDE1 I Side1 key input57 SIDE2 I Side2 key input58~62 EN5~EN1 I Channel selector input63 DIST1 I No function64 DIST2 I No function65 PLL_UL I PLL unlock signal input66 BATT I Battery voltage detect67 RSSI I RSSI input68 BUSY I Busy signal input69 VOX I VOX signal detect70 QT/DQT_IN I QT/DQT signal input71 EEPCLK O EEPROM clock72 EEPDAT I/O EEPROM data input / output73 TH_DET I Temperature detect74 DTMF I DTMF/BEEP output75 AVSS - GND76 PCTV I APC/BPF control voltage77 VREF I Reference voltage input78 AVCC I Power supply input79 PLL_DAT O PLL data output80 PLL_CLK O PLL clock outputTERMINAL FUNCTIONTX-RX unit (X57-7570-20)Pin No. Name I/O FunctionCN3011 B I B (Battery Voltage)2 SB O Switched B3 AFVOL_IN I Audio input4 AFVOL_OUT O Audio output5 AFVOL_GND - GNDPin No. Name I/O Function6 EN1 I Encoder pulse input7 EN2 I Encoder pulse input8 GND - GND9 EN3 I Encoder pulse input10 EN4 I Encoder pulse input11 EN5 I Encoder pulse input