NX-700/700H

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NX-700/700HCIRCUIT DESCRIPTION+B +BF4015AD401DETSBCQ401INVQ404SB SW/OVRBIC403AVRF5012AQ40780T SWSBSB80C80TFinal AmpAudio Amp, Display BlockPA connectorD_Sub 25Pin connectorInternal OptionDisplay BlockTX circuitIC405DC/DCQ41250MC SW50MCRS-232C DriverQ40880R SW80RTXCRX circuitIC408AVRSBCQ416SW33A33A-2ASIC (Analog)Audio circuitIC410DC/DCIC404AVR150C50CRXCAssist, Tune circuitVCO, Internal Option,I/O expander, FM ICIC401DETIC402AVR/BINTIC409AVRQ41133BU SW15M33MASIC, DSP coreASIC, DSP I/OFlash memory33BUSRAM, RTCCN405Q40950R SWIC406AVR50R33CRX circuitRXCTCXO, PLLIC506DETMCU ResetIC407AVR33GPSInternal OptionFig. 88. Signaling Circuit8-1. Encode (QT/DQT/DTMF/MSK/2TONE)Each signaling data signal of QT, DQT, DTMF and MSK isgenerated by the DSP circuit, superposed on a modulationsignal and output from IC510. The modulation balance ofthe QT/DQT signal is adjusted by the D/A converter (IC712)and the resulting signal is routed to the modulation input ofthe VCO and VCTCXO (X1). The each deviation of the TXQT, DQT, DTMF and MSK tone is adjusted by changing theoutput level of the IC510 and the resulting signal is routedto VCO and VCXO. The RX DTMF tone is routed to the receiveaudio signal system, and is output from the speaker.9. Compander CircuitThe term “compander” means compressor and expander.The compander reduces noise by utilizing a compressorand an expander. The NX-700/700H contains DSP (IC502) toperform this operation. The NX-700/700H compander canbe turned on or off using the FPU.8-2. Decode (QT/DQT/DTMF/2TONE/MSK)The audio signal is removed from the FM detectionsignal sent to the DSP circuit and the resulting signal is decoded.22
COMPONENTS DESCRIPTIONNX-700/700HDisplay unit (X54-3640-10)Ref. No. Part Name DescriptionIC901 MOS-IC AFO/BLC SWIC902 MOS-IC AF Buffer AMP (AFO)IC903 MOS-IC Voltage Regulator (5C)IC904 MOS-IC Voltage Regulator (33C)IC905 MOS-IC Bus Buffer (TXD0)IC906 MOS-IC DC/DC Converter (N100C)IC907 MOS-IC Dual Bus Buffer (RXD0/RXD1)IC908 MOS-IC AND Gate (TXD1/RXD0)IC909 MOS-IC Buffer AMP (LCD Contrast ADJ)IC910 MOS-IC Bus Buffer (D0-D7)IC911 MOS IC MCUIC912 MOS-IC Bus Buffer (A1-A2)IC913 ROM IC Flash ROMQ901 FET AFO SWQ902 Transistor HK/RXD0 SWQ904 Transistor HK/RXD0 SWQ905 Transistor TX/RX LED (TX)Q906 Transistor TX/RX LED (BUSY)Q908 Transistor LCD Back Light SWQ909 Transistor DIMER SW (LCD Back Light)Q910 Transistor LCD BACK LIGHT SWQ911 FET Dimer SW (LCD Back Light)Q913 FET LCD Reset SWD901 Varistor Surge Absorption (DM/KVL)D902 Varistor Surge Absorption (HK/RXD)D903 Zener Diode Over DC Supply ProtectionD904 Varistor Surge Absorption (BLC/AFO)D906 Varistor LINE protection (SB)D907 Zener Diode OVER DC Supply ProtectionD908 Diode KEY MatrixD910 DiodeReverse Current Prevention (HK/RXD)D911,912 Diode KEY MatrixD913 Diode Line Protection (PTT/TXDO)D914 LED TX/RX LEDD915~926 LED LCD Back LightD927~936 LED KEY Back LightD937 Diode Level Shift (PRST)TX-RX unit (X57-7380-XX)Ref. No. Part Name DescriptionIC1 MOS-IC Buffer AMP (TCXO modulation)IC2 MOS-IC Temp SensorIC3 MOS-IC PLL ICIC4 MOS-IC Buffer AMP (VCO tune)IC5 MOS-IC VCO Modulation/Buffer AMP (CV)IC101 MOS-IC Auto Power ControlIC102 MOS-IC Final AMP (RF Power Module)IC103 MOS-IC Auto Power ControlIC201 MOS-IC Buffer AMP (2nd IF DET)IC202 Analogue IC IF ICIC203 MOS-IC Buffer AMP (RSSI/VAGC)IC204 MOS-IC 1st MixerIC205,206 MOS-IC Buffer AMP (BPF tune)IC401 MOS-IC Voltage Detector (BINT)IC402 MOS-IC Voltage Regulator (33M)IC403 MOS-IC Voltage Regulator (80C)IC404 MOS-IC Voltage Regulator (50C)IC405 Analogue IC DC/DC Converter (50M)IC406 BI-POLAR IC Voltage Regulator (33C)IC407 MOS-IC Voltage Regulator (33GPS)IC408 MOS-IC Voltage Regulator (33A)IC409 MOS-IC Voltage Regulator (15M)IC410 Analogue IC DC/DC Converter (150C)IC501 ROM IC Flash ROMIC502 MCU DSP (BGA)IC503 SRAM IC SRAM (BGA)IC504 MOS-IC RTCIC505 MOS-IC DelayIC506 MOS-IC Reset (MCU)IC507 MOS-IC Bus Buffer (BFSX2)IC508 MOS-IC Buffer AMP (18.432MHz)IC509 MOS-IC Bus Buffer (BER CLK/BER DATA)IC510 MOS-IC MCU (BGA)IC511 MOS-IC AND (PCS_RF/HD2)IC512 MOS-IC Level Shift (AND ITXD1/SCTXD)IC513 MOS-IC Buffer AMP (TXD2)IC514 MOS-IC Level Shift (I2CCK/I2CDT)IC515 MOS-IC Level Shift (TXDO/RTSO)IC516 MOS-IC Level Shift (RXDO/CTSO)IC517 MOS-IC I/O Expander23
Page 3 and 4: GENERALNX-700/700H4-2. AntennaThe f
Page 5 and 6: REALIGNMENTNX-700/700H1. ModesUser
Page 7: REALIGNMENTNX-700/700H3.• How to
Page 10: NX-700/700HINSTALLATION■ Connect
Page 13 and 14: INSTALLATIONNX-700/700H6-2. Install
Page 16 and 17: NX-700/700HDISASSEMBLY FOR REPAIR
Page 18 and 19: NX-700/700HCIRCUIT DESCRIPTION3-3.
Page 20 and 21: NX-700/700HCIRCUIT DESCRIPTION5. PL
Page 24 and 25: NX-700/700HCOMPONENTS DESCRIPTIONRe
Page 26 and 27: NX-700/700HPARTS LISTCAPACITORSC C
Page 30 and 31: NX-700/700HPARTS LISTTX-RX UNIT (X5
Page 40 and 41: NX-700/700HCPACKINGD711159 Micropho
Page 42 and 43: NX-700/700HTROUBLE SHOOTING● Chec
Page 44 and 45: NX-700/700HADJUSTMENTControlsPower
Page 46 and 47: NX-700/700HADJUSTMENT■ 5 referenc
Page 48 and 49: NX-700/700HADJUSTMENTNXDN Deviation
Page 50 and 51: NX-700/700HADJUSTMENTRadio Check Se
Page 52 and 53: NX-700/700HADJUSTMENTItem5. Frequen
Page 54 and 55: NX-700/700HADJUSTMENTItem5. Balance
Page 56 and 57: NX-700/700HADJUSTMENT56Item10. LTRD
Page 58 and 59: NX-700/700HADJUSTMENTReceiver Secti
Page 60 and 61: NX-700/700HADJUSTMENTItem6. Low RSS
Page 62 and 63: NX-700/700HTERMINAL FUNCTIONDisplay
Page 64 and 65: NX-700/700HTERMINAL FUNCTIONPin No.
Page 66 and 67: NX-700/700HTERMINAL FUNCTIONPin Nam
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72JIHGFEDCBA1234567891011121314D G
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74JIHGFEDCBA1234567891011121314C20C
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1ABCDNX-700/700H PC BOARDTX-RX UNIT
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1ABCDENX-700/700H PC BOARDFGHIJ2TX-
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1A B C D ENX-700/700H SCHEMATIC DIA
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K L M N ONX-700/700H SCHEMATIC DIAG
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U V W X YNX-700/700H SCHEMATIC DIAG
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AE AF AG AH AINX-700/700H SCHEMATIC
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AO AP AQ AR ASNX-700/700H SCHEMATIC
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AY AZ BA BB BCNX-700/700H SCHEMATIC
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BI BJ BK BL BMNX-700/700H SCHEMATIC
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BS BT BU BV BWNX-700/700H SCHEMATIC
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CC CD CE CF CGNX-700/700H SCHEMATIC
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NX-700/700H BLOCK DIAGRAMCN401DCin(
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NX-700/700HLEVEL DIAGRAMReceiver Se
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NX-700/700HSPECIFICATIONSGENERALFre
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J K L M N O P Q R SIHGFEDCBA1234567
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1ABCDENX-700/700H PC BOARDFGHIJ2TX-
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150C50CCN401DCin(13.6V)CN402GNDCN54
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