Kenwood NXR-700H Service Manual

NXR-700H45Control Unit (X53-4132-71)Pin No. Name I/O FunctionCN1 (To X53-414 CN401)1 PTT_TXD_SCM - No connection2 GND - Ground3 LO_VOL_DET O Low voltage detection signal4 NC - No connection5 TD_SW I TD terminal input signal mute switch6 MICAD_SW IMicrophone input signal switch,changed to analog modulation orNXDN modulation7 MIC_SW I Microphone mute switch8 RXAD_SW ISpeaker signal switch, changed to ana-log reception signal or NXDN receptionsignal9 PATH_SW I Analog or NXDN modulation routeselector switch10 BEEP_SW I Beep sound mute switch11 TA_SW I TA input mute switch12 TAAD_SW I TA input signal, changed to analogmodulation or NXDN modulation13 EVOL_LD I Load for electronic volume14 GND - Ground15 EVOL_CLK I Clock for electronic volume16 PTT_AM16C O PTT signal17 EVOL_DATA I Data for electronic volume18 INSP_SW - No connection19 AF_MUTE I Speaker output mute switch20 SCM_EN - No connection21 AMP_SW I Speaker amplifier power ON/OFF switch22 HOOK_RXD_SCM - No connection23 NC - No connection24 INRA_SW - No connection25 MIC_D_IN O NXDN transmission signal output26 BEEP I Beep sound signal input27 RX_AUDIO_D I NXDN reception signal input28 GND - Ground29 MOD_D_OUT I NXDN modulation signal input30 PWR_ST_R I Switch for red LED (Power source)31 VOLUME_IN O Volume control input for AF signal32 OCXO_ST_G I Switch for green LED (OCXO)33 OCXO_ST_R I Switch for red LED (OCXO)34 RX_POWER_SAVE I RX unit power saving signal35 GND - Ground36 GND - GroundCN2 (To X53-414 CN402)1 SYS_RST I System reset signal from modemcontrol MPU控制单元 (X53-4132-71)管脚号名称输入 / 输出功能CN1( 至 X53-414 CN401)1 PTT_TXD_SCM - 未连接2 GND - 接地3 LO_VOL_DET 输出低电压检测信号4 NC - 未连接5 TD_SW 输入 TD 端子输入信号静音开关6 MICAD_SW 输入麦克风输入信号开关，改为模拟调制或 NXDN 调制7 MIC_SW 输入麦克风静音开关8 RXAD_SW 输入扬声器信号开关，改为模拟接收信号或 NXDN 接收信号9 PATH_SW 输入模拟或 NXDN 调制路径选择开关10 BEEP_SW 输入提示音静音开关11 TA_SW 输入 TA 输入静音开关12 TAAD_SW 输入 TA 输入信号，改为模拟调制或NXDN 调制13 EVOL_LD 输入电子音量的负载14 GND - 接地15 EVOL_CLK 输入电子音量的时钟16 PTT_AM16C 输出 PTT 信号17 EVOL_DATA 输入电子音量的数据18 INSP_SW - 未连接19 AF_MUTE 输入扬声器输出静音开关20 SCM_EN - 未连接21 AMP_SW 输入扬声器放大器电源 ON/OFF 开关22 HOOK_RXD_SCM - 未连接23 NC - 未连接24 INRA_SW - 未连接25 MIC_D_IN 输出 NXDN 发射信号输出26 BEEP 输入提示音信号输入27 RX_AUDIO_D 输入 NXDN 接收信号输入28 GND - 接地29 MOD_D_OUT 输入 NXDN 调制信号输入30 PWR_ST_R 输入红色 LED( 电源 ) 的开关31 VOLUME_IN 输出 AF 信号的音量控制输入32 OCXO_ST_G 输入绿色 LED(OCXO) 的开关33 OCXO_ST_R 输入红色 LED(OCXO) 的开关34 RX_POWER_SAVE 输入 RX 单元节电信号35 GND - 接地36 GND - 接地CN2( 至 X53-414 CN402)1 SYS_RST 输入调制解调器控制 MPU 的系统复位信号TERMINAL FUNCTION / 端子功能