Kenwood NX-300S Service Manual

Also see for NEXEDGE NX-300: Brochure Instruction manual Instruction manual Instruction manual Instruction manual

NX-300(S)55Pin No. Name I/O Function12 TXD O Serial data output13 RXD I Serial data input14 NC - No connectionCN7101 OPT1 I/ORefer to “CN710 26-pin connectorspecifi cation” described on pages58 to 61.2 OPT3 I/O3 26P_RD I4 26P_TD O5 NC -6 OPT4 O7 OPT10 O8 OPT5 O9 DGND -10 AGND -11 AI I12 AO O13 AGND -14 5V O15 OPT9 I16 DTI I17 OPT8 I/O18 OPT11 O19 OPT7 I/O20 OPT2 I/O21 TXO O22 RXEO O23 RXEI I24 TXI I25 OPT6 O26 POW OTX-RX unit (X57-7830-11 A/2)Pin No. Name I/O FunctionCN9001 LED_G I Green LED control input2 /EMG O Emergency (Orange) key output3 LED_R I Red LED control input4 IFC O TX-RX PCB version recognition output5 /SAVE I 50C Reg. control input6 I2CCK I TCXO thermometer clock input7 /5TC I 50T Reg. switch control input8 I2CSDA I/O TCXO thermometer data input/output9 SBC I SB3 switch control input10 /T_R I TX/RX control input11 TV2 I RX tuning voltage 2 input12 ASSIST I VCO tuning voltage input13 TV1 I RX tuning voltage 1 input14 VAGC O AGC voltage output15 5RC I 50R switch control input16 TCXO_MOD I TCXO modulation input17 GND - GND18 RSSI O RSSI voltage output19 GND - GND20 CV O CV voltage output21 GND - GND22 NC - No connection23 NC - No connection24 +B O Power output after passing through thefuse25 +B O Power output after passing through thefuse26 +B O Power output after passing through thefuse27 +B O Power output after passing through thefuse28 NC - No connection29 NC - No connection30 GND - GND31 /PTT O PTT output32 Side_G I Key matrix input (SIDE1,2 key)33 Side_1 O Key matrix output (SIDE1 key)34 W_/N I No connection35 SDO1 I PLL serial data input36 Side_2 O Key matrix output (SIDE2 key)37 /PCS_RF I PLL enable input38 /DSW I APC voltage discharge switch controlinput39 APC I APC control voltage inputTERMINAL FUNCTION