Kenwood NXR-700 Service Manual

Also see for NEXEDGE NXR-700: Brochure Instruction manual Service manual Instruction manual Instruction manual

Contents

NXR-70029Control 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 amplifi er 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 sourse)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 - GroundPin No. Name I/O FunctionCN2 (To X53-414 CN402)1 SYS_RST I System reset signal from modem con-trol MPU2 GND - Ground3 BER_CLK I Serial clock for measurement bit error rate4 BER_DAT I Serial data for measurement bit error rate5 A16C_CK_SFT I “Frequency shift” signal to RF control MPU6 TRUNKING O “Trunking mode” signal to Main MPU7 ADSP_CK_SFT I “Frequency shift” signal to Analogmode DSP8 GND - Ground9 RADIO_ERR O “Detect accident of RF block” signal toMain MPU10 QT_DQT O “Detect QT or DQT” signal to Main MPU11 TX_STATE O “During the transmission” signal toMain MPU12 RF_PTT O “Press-to-talk-switch” signal to Main MPU13 GND - Ground14 STXO_ARXO I UART signal from Main CPU to RFcontrol MPU15 SRXO_ATXO O UART signal from RF control MPU toMain MPU16 GND - Ground17 SC_SH O “Squelch control” signal to Main MPU18 E_PTT_SH O “External press-to-talk-switch” signal toMain MPU19 NC - No connection20 50MPU_CONT I 5V regurator control21 33SH I 3.3V constant voltage22 33MPU_A O 3.3V constant voltage23 50MPU_A O 5V constant voltage24 33MPU_A_GND - Ground25 33MPU O 3.3V constant voltage26 33MPU O 3.3V constant voltage27 33MPU_A_GND - Ground28 DC50 O 5V constant voltage29 DC50 O 5V constant voltage30 DC50 O 5V constant voltage31 DC50 O 5V constant voltage32 50MPU_A_GND - Ground33 50MPU O 5V constant voltage34 50MPU_A_GND - Ground35 GND - Ground36 HI_VOL_DET O Voltage monitorTERMINAL FUNCTION