Kenwood NXR-800 Service Manual

Also see for NEXEDGE NXR-800: Brochure Instruction manual Instruction manual Instruction manual Instruction manual

Contents

NXR-80035Pin No. Name I/O Function2 GND - Ground3 OX_SDA I/O OCXO EEPROM serial data4 OX_SCL O OCXO EEPROM serial clock5 OCXO_VR_EN O Enable output for OCXO IC3 (potenti-ometer)6 OCXO_ON O OCXO power on signal7 OX_SCLK2 O Serial clock output for OCXO IC3 (po-tentiometer)8 OCXO_CURR I OCXO current detection signal9 OX_SDI2 I Serial data input for OCXO IC3 (poten-tiometer)10 OCXO_EXIST I OCXO detection signal11 OX_SDO2 O Serial data output for OCXO IC3 (po-tentiometer)12 GND - Ground13 REF_SW2 O OCXO reference signal output switchCN804 (To X53-413 CN56)1 GND - Ground2 GND - Ground3 WP I EEPROM write protect signal input4 MOD I Moduration signal input5 GND - Ground6 SDO1 I Serial data input for IC101, IC202,IC303, IC802, IC8037 SCLK0 I Serial clock input for IC7038 SCLK1 I Serial clock input for IC101, IC202,IC303, IC802, IC8039 SDO0 I Serial data input for IC701, IC70310 SDI1 O Serial data output for IC80311 SR_EN I Enable input for IC701, IC70312 8AD_EN I Enable input for IC80313 SR_OE I Enable input for IC70314 2DA_CE I Chip enable input for IC80215 3DA_EN I Enable input for IC70116 2DA_EN I Enable input for IC80217 LDT O RF PLL lock detect output18 132_CE I Chip enable input for IC30319 440_CE I Chip enable input for IC10120 132_EN I Load enable input for IC30321 440_EN I Load enable input for IC10122 VR_EN I Load enable input for IC30423 DDS_EN I Load enable input for IC20224 ANT_SW I TX antenna switch input25 TEMP_PRT O Temp protection signal output26 SCK I EEPROM ClockPin No. Name I/O Function27 D_GND - Ground28 SDA I/O EEPROM Data29 D_GND - Ground30 CONT_5.0V I Switched 5V power supply31 D_GND - Ground32 CONT_5.0V I Switched 5V power supply33 GND - Ground34 PAG I POCSAG Switch35 GND - Ground36 GND - GroundCN805 (To X53-414 CN400)1 GND - Ground2 GND - Ground3 33MPU I Switched 3.3V power supply4 OX_SCLK2 I Serial clock input for IC601, IC4045 GND - Ground6 OX_SDO2 I Serial data input for IC601, IC4047 GND - Ground8 PLL_19_CE I 100kohm load9 GND - Ground10 PLL_19_EN I Enable input for IC40411 GND - Ground12 REF_LDT O 19.2MHz PLL lock detect output13 GND - Ground14 VCXO_DA_EN I Enable input for IC60115 GND - Ground16 OCXO_EXIST O OCXO detection signal17 GND - Ground18 OCXO_CURR O OCXO current detection signal19 GND - Ground20 OCXO_ON I OCXO power on signal21 GND - Ground22 OCXO_VR_EN I Enable input for OCXO IC3 (potentiom-eter)23 GND - Ground24 OX_SDI2 O Serial data output for OCXO IC3 (po-tentiometer)25 GND - Ground26 REF_IN_OUT I Reference clock switched signal input27 IMP_H_L I 100kohm load28 REF_EXIST O Reference detector signal output29 OX_SDA I/O OCXO EEPROM serial data30 EXT_EXIST O External reference detector signal outputTERMINAL FUNCTION