Page 1: Table Of Contents
900MHz DIGITAL BASE-REPEATER NXR-901 OCXO UNIT KXK-3 M3 version SERVICE MANUAL © 2011-12 PRINTED IN JAPAN B53-7004-00 ( Y ) 330 Lead wire with Badge Main panel connector (DSUB-9P) Modular jack (B43-1188-04) (A62-1142-02) (E37-1311-05) (E58-0526-05) Knob (VOL) (K29-4539-04) Lead wire with...
Page 2: General
The title to and ownership of copyrights for firmware No part of this manual may be reproduced, translated, embedded in Kenwood product memories are reserved for distributed, or transmitted in any form or by any means, JVC KENWOOD Corporation. Any modifying, reverse en-...
Page 3: System Set-Up
Use this mode to make various settings by PC mode means of the FPU through the RS-232C 3-2. Connection Procedure port. 1. Connect the NXR-901 to the personal computer with the PC programming Use to read and write frequency data and interface cable. mode other features to and from the repeater.
Page 4 XP, Vista or 7 on a PC. 3. Set the ﬁ rmware to be updated by ﬁ le name item. The data can be input to or read from NXR-901 and ed- 4. Turn the NXR-901 power on. ited on the screen. The programmed or edited data can be 5.
Page 5: Operating Features
NXR-901 OPERATING FEATURES • “E8” is displayed when Failure Input port becomes active. 1. Two 17-segment LED Displays • Channel display (1~30): While operating normally in user mode. • “PC” is displayed while in PC mode. • “PG” is displayed while in ﬁ rmware programming mode.
Page 6: Installation
Fig. 2-1 Fig. 1 2. External Speaker (KES-5) The NXR-901 has a internal built-in speaker, and the ex- ternal speaker output from the TEST/SPKR connector (15- Extracting tool pin) on the rear of the radio is 3W/4. Use external speaker...
Page 7 NXR-901 INSTALLATION 3. How to Attach the Supplied Accessories 1. Attach the front glass to the front panel with the supplied screw. ( a ) 2. To attach the handles on the both sides of the chassis, refer to illustration. ( b )
Page 8: Circuit Description
(6) Modulation level adjustment circuit to +/-0.5ppm. (7) AVR circuits The receiver part of the NXR-901 is conﬁ gured as dou- (8) Other circuits ble-conversion super heterodyne. The 1st IF is 73.05MHz and the 2nd IF is 450kHz.
Page 9 NXR-901 CIRCUIT DESCRIPTION reference signal, the 5.99MHz internal DDS (IC401) is se- The stabilized 20.0MHz reference oscillating signal en- lected as the reference signal. ters the Q308 and Q309 buffer ampliﬁ ers and is ampliﬁ ed by If the OCXO unit is installed and there is no external Q310 and Q311.
Page 10 NXR-901 CIRCUIT DESCRIPTION 2-4. Transmitter main PLL circuit The VCO signal is doubled by Q5 to 935~941MHz. This signal is fed to the BPF to attenuate spurious signals, and is The transmitter main PLL circuit consists of the VCO (Q4) then fed to PLL IC (C5).
Page 11 NXR-901 CIRCUIT DESCRIPTION 2-6. Modulation level adjustment circuit (B/2) of the modulating signal with a cut off signal of approxi- mately 9kHz. The level adjustment circuit adjusts the modulation signal level to provide the required level of modulation. This circuit TX UNIT consists of IC203, IC206 and IC207.
Page 12 2700MHz. The input and output matching circuit is adjusted differential ampliﬁ er IC4 (B/2). to the 935 to 941MHz band for the NXR-901. This device Directional does not have a gain control function, therefore the output...
Page 13 NXR-901 CIRCUIT DESCRIPTION 3-6. High temperature detector circuit 3-9. AVR circuit The high temperature detector circuit consists of a ther- IC17 and IC18 are AVR ICs for PA MMIC. IC11 supplies mal switch IC (IC7) and a switching FET (Q8).
Page 14 NXR-901 CIRCUIT DESCRIPTION RF AGC control L203 Q201 L210 Electric mixer coupler IC202 IC205 IC201 CN68 IC811 R210 Fig. 14 Front-end circuit IC205 coupler mixer Freq. 1st Lo doubler PLL block Fig. 15 1st-Mixer circuit 4-3. 1st-IF circuit XF1 is 4-pole Monolithic Crystal Filters (MCF). This is a...
Page 15 NXR-901 CIRCUIT DESCRIPTION 4-4. Demodulator circuits Narrow FM signal to be ﬁ ltered by ceramic ﬁ lters CF201, CF203 for narrow FM. The baseband signal FM-detected by The desired signal that passed through the 1st IF circuit the quadrature detection circuit is ampliﬁ ed to a signal level...
Page 16 NXR-901 CIRCUIT DESCRIPTION IC2 (PLL IC) compares the phase difference of the VCO The 72.6MHz 2nd local oscillator signal generated by signal and the 20.0MHz reference signal from the TX unit. Q604 is doubled to 145.20MHz by Q608 and is passed to The phase error signal from IC2 is ﬁ...
Page 17 NXR-901 CIRCUIT DESCRIPTION 4-7. AVR circuit The output of IC801 is supplied to the PLL IC’s charge- pump, buffer ampliﬁ ers, IC4 (3.3V), IC605 (3.3V) and IC606 The power supply voltage supplied from the Power unit (3.3V). The output of IC606 is supplied to PLL serial data (X45-387 C/4) is distributed from the Receiver unit (X55-312) driver IC602 and IC604.
Page 18 NXR-901 CIRCUIT DESCRIPTION The AGC controls the ampliﬁ er gains using the detected 5. Baseband Signal Processing Part audio signal depending on the positive and negative peaks The baseband circuit is located on the Control unit (X53- of the signal amplitude.
Page 19 This serial data can control various functions of each unit. ■ LAN interface ■ Power supply circuit The NXR-901 is equipped with a 100Base-TX or 10Base- This circuit consists of X53-413 IC6, IC10, IC11, IC15, T LAN interface. This circuit consists of IC719, IC720 and IC16 and IC18, and X53-414 IC305, IC306, IC307 and J700.
Page 20 NXR-901 CIRCUIT DESCRIPTION ■ Modem control MPU This signal is demodulated by the wave detection pro- cessing par t. The demodulated wave is made to pass The modem control MPU (IC325) is 16-bit single chip through the baseband limitation filter (root nyquist cosine microprocessor incorporating 256K bytes of ROM and 20K ﬁ...
Page 21 ■ TX_Vocoder DSP ■ Clock shift circuit In digital mode, vocoder processing is performed by the The NXR-901 Control unit has a crystal oscillation circuit IC324 TX_Vocoder_DSP. as shown below. The audio signal input from the Audio codec IC ADC part...
Page 22 NXR-901 CIRCUIT DESCRIPTION uted to two routes. ■ Frame transmitter and receiver circuit One is ampliﬁ ed by Q305 and input to IC315 pin 6 (RF signal input). The other is ampliﬁ ed by IC313 and becomes a J702 and J703 are connectors for synchronizing with clock for the RX DSP and TX_Vocoder DSP.
Page 23: Components Description
NXR-901 COMPONENTS DESCRIPTION Final unit (X45-3870-11) Ref. No. Part Name Description Ref. No. Part Name Description IC27,28 Buffer Current monitor IC29 AF PA OP AMP IC30 NAND gate OP AMP IC31 Divider OP AMP IC32,33 Buffer Temperature sensor IC34 EEPROM...
Page 24 NXR-901 COMPONENTS DESCRIPTION Control unit (X53-4140-10) Ref. No. Part Name Description Ref. No. Part Name Description Q700,702 Transistor Clock shift switch Q704,705 IC300,301 Buffer Q706 Transistor Control switch IC302 RS-485 driver/receiver Q707 Transistor MIC switch IC303 Voltage detector D300 Diode...
Page 25 NXR-901 COMPONENTS DESCRIPTION Ref. No. Part Name Description Ref. No. Part Name Description Q201 Transistor IC501,502 OP AMP Q202,204 Transistor IF AMP IC503 Frequency divider Q211 Transistor IF AMP IC504 Buffer AMP Q214 Transistor Noise AMP IC505,506 Comparator Q216 DC switch...
Page 26 NXR-901 COMPONENTS DESCRIPTION Ref. No. Part Name Description Ref. No. Part Name Description Q513,514 Transistor Reference signal AMP D504~506 Diode Detector Q515~518 DC switch D507 Diode Reference signal switch Q920~930 Transistor DC switch D509,510 Diode DC switch Q931 Transistor Audio level limiter...
Page 27: Terminal Function
NXR-901 TERMINAL FUNCTION Final unit (X45-3870-11) (A/4) Pin No. Name Function Pin No. Name Function Ground CN1 (To X56-315 A/3 CN802) CN21 (To X45-387 C/4 CN30) TX SIGNAL TX driver input signal (Coaxial) Ground CN2 (To X45-387 C/4 CN29) Power supply input Final unit (X45-3870-11) (C/4) Pin No.
Page 28 NXR-901 TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function Microphone input signal switch, Ground MICAD_SW changed to analog modulation or “Detect accident of RF block” signal to RADIO_ERR NXDN modulation Main MPU MIC_SW Microphone mute switch QT_DQT O “Detect QT or DQT” signal to Main MPU Speaker signal switch, changed to ana- “During the transmission”...
Page 29 NXR-901 TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function Key Scan Hardware version DC signal Key Scan VR_EN O Enable for electronic volume Ground 440_EN O Enable for PLL STB1 O Shift register strobe 132_EN O Enable for PLL...
Page 30 NXR-901 TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function FM_RSSI RSSI signal input I/O Programmable function input/output 3 RX-DATA output (data or Signaling) No connection output impedance=1k or less Ground Coupling=AC coupling PLL_PWR_SAVE O Not used Non-squelched Frequency response=±2.5dB at...
Page 31 NXR-901 TERMINAL FUNCTION Control unit (X53-4140-10) Pin No. Name Function Serial data enable signal to potentiometer of OCXO unit Ground Pin No. Name Function OX_SCLK2 O DAC of OCXO unit to serial clock output CN300 (To X55-312 CN43) 33MPU O 3.3V constant voltage...
Page 32 NXR-901 TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function Ground CN713 (To COM D-sub 9-pin connector) PTT_TXD_SCM No connection No connection Data Set Ready CN402 (To X53-413 CN2) Receive Data HI_VOL_DET Voltage monitor O Request to Send Ground...
Page 33 NXR-901 TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function IO RD O I/O area read enable AD_DAT_READ O AD logic data output IO WR O I/O area read enable Ground WE CF O Write enable AD_CLK Clock input for AD...
Page 34 NXR-901 TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function CN407 (To X42-328 CN2: OCXO Optional unit) 3DA_EN Enable input for IC201 OCXO (Optional unit) reference signal 2DA_EN Enable input for IC705 OCXO input (coaxial) O RF PLL lock detect output...
Page 35 NXR-901 TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function Enable input for OCXO IC3 (potentiom- FWD_PWR Forward power signal input OCXO_VR_EN eter) Ground Ground FAN_CURR FAN current monitor signal input Serial data output for OCXO IC3 (po- OX_SDI2...
Page 36 NXR-901 TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function SR_CLK Shift Register Clock 33AUD O Switched 3.3V power supply Ground O Power supply output SR_DATA Shift Register Data SCM_EN No connection Ground Ground STB1 Shift Register Strobe PTT_TXD_SCM...
Page 37 NXR-901 TERMINAL FUNCTION Microphone Connector Signal Description /port Pin Name I/O Speciﬁ cation Unit Remarks Type Type Related to DC power Voltage value 10.8 13.8 15.9 Power Power supply terminal input Allowable current value voltage. Digital GND Allowable current value 0.8Vcc...
Page 38 NXR-901 TERMINAL FUNCTION CONTROL I/O D-sub 25-pin Connector Signal Pin Name I/O Signal Summary Speciﬁ cation Unit Remarks Type NC (RSSI) 0.8Vcc Programmable Vcc=5V±2% Digital Function Input 1 0.2Vcc /CMOS  Input impedance 47k PU to Vcc 0.8Vcc Programmable Vcc=5V±2%...
Page 39 NXR-901 TERMINAL FUNCTION Signal Pin Name I/O Signal Summary Speciﬁ cation Unit Remarks Type TX Signal GND 0.8Vcc Vcc=5V±2% 0.2Vcc Programmable  Digital Input impedance Function I/O 1 VOH (IO=–200µA) Vcc–2.0 47k PU to Vcc VOL (IO=200µA) 0.45 0.8Vcc Vcc=5V±2% 0.2Vcc...
Page 40 NXR-901 TERMINAL FUNCTION TEST/SPKR 15-pin Connector Con- Signal ﬁ guration Signal Summary Speciﬁ cation Unit Remarks Name Type Change Related to DC Voltage value 10.8 13.8 15.9 power supply Power Supply terminal input Supply current voltage. Related to DC Voltage value 10.8...
Page 41: Parts List
NXR-901 PARTS LIST ✽ New Parts. indicates safety critical components. L : Scandinavia K : USA P : Canada Parts without Parts No. are not supplied. Y : PX (Far East, Hawaii) T : England E : Eu rope Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Page 42 NXR-901 PARTS LIST FINAL UNIT (X45-3870-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation ✽ C122,123 C93-0983-05 CHIP C 6.0PF CN905 E41-1483-05 PIN ASSY(11P) J901 E58-0526-05 MODULAR JACK(MIC)
Page 43 NXR-901 PARTS LIST FINAL UNIT (X45-3870-11) CONTROL UNIT (X53-4132-71) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R145 RK73GB2A000J CHIP R 1/10W SSM3K15TE(F) R151 RK73GB2A000J CHIP R 1/10W...
Page 44 NXR-901 PARTS LIST CONTROL UNIT (X53-4132-71) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C109 CK73GB1H102K CHIP C 1000PF C217 CK73GB1H103K CHIP C 0.010UF K C110 C93-1824-05 CHIP C...
Page 45 NXR-901 PARTS LIST CONTROL UNIT (X53-4132-71) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C315 CC73GCH1H101J CHIP C 100PF C413 CK73GB1H104K CHIP C 0.10UF C316 CK73GB1H102K CHIP C...
Page 46 NXR-901 PARTS LIST CONTROL UNIT (X53-4132-71) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R7 -17 RK73GB2A000J CHIP R 1/10W R156,157 RK73GH2A104D CHIP R 100K 1/10W R18 ,19...
Page 47 NXR-901 PARTS LIST CONTROL UNIT (X53-4132-71) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R237 RK73GB2A473J CHIP R 1/10W R471-473 RK73GB2A104J CHIP R 100K 1/10W R240-243 RK73GB2A473J CHIP R...
Page 48 NXR-901 PARTS LIST CONTROL UNIT (X53-4132-71) CONTROL UNIT (X53-4140-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation IC22 BU4094BCFV MOS-IC C341,342 CK73HB1H102K CHIP C 1000PF IC23 TC7SH00FU-F MOS-IC...
Page 49 NXR-901 PARTS LIST CONTROL UNIT (X53-4140-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C461 CK73GB1H103K CHIP C 0.010UF K C575-588 CK73HB1E103K CHIP C 0.010UF K C462 CK73HB1E103K CHIP C 0.010UF K...
Page 50 NXR-901 PARTS LIST CONTROL UNIT (X53-4140-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C809 CK73HB1A104K CHIP C 0.10UF R309 RK73HB1J000J CHIP R 1/16W C812 CK73HB1A104K CHIP C 0.10UF...
Page 51 NXR-901 PARTS LIST CONTROL UNIT (X53-4140-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R483 RK73HB1J104J CHIP R 100K 1/16W R641 RK73HB1J000J CHIP R 1/16W R484 RK73HB1J000J CHIP R...
Page 52 NXR-901 PARTS LIST CONTROL UNIT (X53-4140-10) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R816 RK73HB1J105J CHIP R 1.0M 1/16W R960 RK73GB2A000J CHIP R 1/10W R817 RK73HB1J821J CHIP R...
Page 53 NXR-901 PARTS LIST CONTROL UNIT (X53-4140-10) RX UNIT (X55-3120-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation ✽ Q706 LTC014EUBFS8 TRANSISTOR CC73GCH1H080B CHIP C 8.0PF Q707 ✽ LTC044EUBFS8...
Page 54 NXR-901 PARTS LIST RX UNIT (X55-3120-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C209 CK73GB1H103K CHIP C 0.010UF K C375 CK73GB1H103K CHIP C 0.010UF K C211,212 CC73GCH1H470J...
Page 55 NXR-901 PARTS LIST RX UNIT (X55-3120-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C518,519 CK73GB1H473K CHIP C 0.047UF K C667 CC73GCH1H060B CHIP C 6.0PF C520 CK73GB1H104K CHIP C 0.10UF...
Page 56 NXR-901 PARTS LIST RX UNIT (X55-3120-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C844 CC73GCH1H471J CHIP C 470PF L41-1078-55 SMALL FIXED INDUCTOR(10NH) C845 CK73GB1H473K CHIP C 0.047UF K...
Page 57 NXR-901 PARTS LIST RX UNIT (X55-3120-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation L71-0666-05 MCF(73.05MHZ) RK73GB2A180J CHIP R 1/10W RK73GB2A101J CHIP R 1/10W RK73GB2A332J CHIP R 3.3K...
Page 58 NXR-901 PARTS LIST RX UNIT (X55-3120-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R312 RK73GB2A000J CHIP R 1/10W R512 RK73GB2A152J CHIP R 1.5K 1/10W R314 RK73GB2A000J CHIP R...
Page 59 NXR-901 PARTS LIST RX UNIT (X55-3120-11) TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R661 RK73GB2A181J CHIP R 1/10W IC503 NJM2878F4-33 BI-POLAR IC R663 RK73GB2A682J CHIP R 6.8K...
Page 60 NXR-901 PARTS LIST TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation CK73GB1H103K CHIP C 0.010UF K C114 CK73GB1H103K CHIP C 0.010UF K CC73GCH1H471J CHIP C...
Page 61 NXR-901 PARTS LIST TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C215 CK73GB1H103K CHIP C 0.010UF K C324 CK73GB1H104K CHIP C 0.10UF C216 CC73GCH1H181J CHIP C...
Page 62 NXR-901 PARTS LIST TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C512,513 CC73GCH1H221J CHIP C 220PF C620 CC73GCH1H820J CHIP C 82PF C514 CC73GCH1H271J CHIP C...
Page 63 NXR-901 PARTS LIST TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation CN405,406 E04-0193-05 PIN SOCKET L314 L41-1005-33 SMALL FIXED INDUCTOR(10UH) CN407 E04-0154-05 PIN SOCKET L315,316 L41-1095-33 SMALL FIXED INDUCTOR(1.0UH)
Page 64 NXR-901 PARTS LIST TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation RK73GB2A224J CHIP R 220K 1/10W R207,208 RK73GB2A102J CHIP R 1.0K 1/10W RK73GB2A000J CHIP R...
Page 65 NXR-901 PARTS LIST TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R321 RK73GB2A104J CHIP R 100K 1/10W R420 RK73GB2A100J CHIP R 1/10W R322 RK73GB2A472J CHIP R 4.7K...
Page 66 NXR-901 PARTS LIST TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R558 RK73GB2A333J CHIP R 1/10W R831,832 RK73GB2A000J CHIP R 1/10W R559 RK73GB2A473J CHIP R...
Page 67 NXR-901 PARTS LIST TX UNIT (X56-3150-11) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation IC401 AD9835BRUZ MOS-IC IC402 NJU6368PF1 MOS-IC IC403 TK71733S BI-POLAR IC IC501,502 TA75S01F-F MOS-IC IC503...
Page 68: Exploded View
NXR-901 EXPLODED VIEW X45-387 IC17 IC18 : N09-2292-05 D : N30-2606-48 : N30-3016-43 X45-387 : N32-3006-43 IC12 G : N32-4008-43 H : N67-3008-48 : N80-2006-43 : N80-2608-43 : N87-2608-48 IC809 X45-387 703x2 IC808 X56-315 X56-315 X56-315 X45-387 Parts with the exploded numbers larger than 700 are not supplied.
Page 69 NXR-901 EXPLODED VIEW 17x3 45-387 IC329 X53-414 IC808 IC29 IC808 IC809 X53-413 703x4 X55-312 EXCITER FINAL CONTROL Parts with the exploded numbers larger than 700 are not supplied. If a part reference number is listed in a box on the exploded view of the PCB, that part does not come with the PCB.
Page 70: Packing
NXR-901 PACKING 9 Instruction manual (B62-2410-00) 36 Blade fuse (7.5A/32V) Protection bagx2 (F05-7521-05) 54 Bracket (Side) 34 15P plug (J29-0725-04)x2 (E37-1381-05) Pamphlet Protection bagx4 Protection bag 2 Front glass (B10-2781-04) Pamphlet 58 Handle Pamphlet (K01-0421-05) Protection sheet Pamphlet 16 Modular cable (SYNC)
Page 71: Trouble Shooting
Connect a cross-wired RS-232C cable to COM port on *2: Appearing this information means the boot program at the front panel of NXR-901. Plug the other end of the the RF control MPU (IC34) is correctly working. cable to PC. (See Fig. 2.)
Page 72 NXR-901 TROUBLE SHOOTING 1-2. Hardware Traceability (Method1) ■ Procedure for IC703 (Main MPU) traceability Abnormal Power Source Voltage Conﬁ rmation of IC329 (pin 5) output condition Test Point Normal Output Voltage Remove R711 and R721. IC329 (pin 4) 3.3VDC If the voltage is 3.3VDC, IC703 is malfunctioning.
Page 73 NXR-901 TROUBLE SHOOTING ■ Traceability Procedure of IC323 (RX_DSP) Abnormal Conﬁ rmation of Power Source Voltage Conﬁ rmation of IC307 (pin 1) output condition Test Point Normal Output Voltage Remove R505. If the output voltage is 1.5VDC, IC307 (pin 1) 1.5VDC...
Page 74 NXR-901 TROUBLE SHOOTING ■ Traceability Procedure of IC17 (Flash Memory of RF control MPU) Abnormal Conﬁ rmation of IC329 (pin 5) output. Conﬁ rmation of Power Source Voltage condition Test Point Normal Output Voltage Remove R159 and if 3.3VDC, one of IC17, IC34, IC28, IC32, IC33, or IC40 is malfunctioning.
Page 75 Correct condition Parts other than IC34 are malfunctioning. 1-3. Hardware traceability (Method 2) The NXR-901 control circuit executes the following pro- 5. The Main MPU (IC703) conﬁ rms the operational status of cedures when the system starts up. the Modem control MPU (IC325) and the RF control MPU 1.
Page 76 NXR-901 TROUBLE SHOOTING ■ External DC 13.8V Power Source applied to the NXR-901 Terminal Refer to the power supply diagram sequence below. Audio AMP (IC29) DC/DC converter LED, Option (IC10, Q2) 50MPU 5V_AVR (IC16) RF_Control_MPU I/O (IC34) Switched by Modem Control...
Page 77 NXR-901 TROUBLE SHOOTING ■ Start-up of each Control Block • Modem Control MPU Block • Main MPU Block Component elements: · Modem control MPU: IC325 Component elements: · Flash memory: IC314 · Main MPU: IC703 · RX DSP: IC323 · Flash memory: IC702 ·...
Page 78 X53-414 Note: For the X53-414, a UPC code and UPC barcode is Control Unit (X53-413) not printed on the Kenwood ESN Label. If necessary, cut the label at the cut-off line and attach only the serial number. Control Unit (X53-414)
Page 79: Adjustment
NXR-901 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Speciﬁ cations Frequency Range 800 to 950MHz 1. Standard Signal Generator Modulation Frequency modulation and external modulation (SSG) Output 0.1µV to greater than 1mV Input Impedance 50 2. RF Power Meter...
Page 80 NXR-901 ADJUSTMENT Flat cable (36-pin) about 256mm (E37-0979-05) 10dB/div 3.75kHz 3.75kHz 3dB max. More than 25dB 12.5kHz 12.5kHz Test Signaling ■ Analog Center frequency: 73.05MHz RX (Decode Signaling) TX (Encode Signaling) Span: 50kHz Pass bandwidth: ±3.75kHz at 3dB None None Fig.
Page 81 NXR-901 ADJUSTMENT Adjustment Points CN46 CN76 CN68 L232 L246 RX ANT RX UNIT (X55-3120-11) CN69 Component side view DETO CN47 L286 CN64 CN66 CN65 CN63 CN45 REF1 CN43 RX_IF_VN L232, L246: MCF Narrow L286: Discriminator CN802 CN203 CN302 CN301 CN403...
Page 82 NXR-901 ADJUSTMENT Common Section Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment 1. Setting 1) Connect the DC power output to the rear panel DC terminal (13.8V). 2) Connect the front panel COM port (D-sub 9-pin connector) to the PC serial port with a cross-wired cable.
Page 83 NXR-901 ADJUSTMENT Transmitter Section Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment 1. Maximum 1) NXDN Narrow Value: 22800 Fixed value writing Deviation (NXDN) 2) NXDN Very Narrow Value: 10000 2. Driver Disconnect the cable from TX...
Page 84 NXR-901 ADJUSTMENT Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment 6. Maximum 1) Channel: 3 (Center) Deviation Rear TX ANT ±1.7kHz ±0.1kHz Deviation Channel spacing meter Front (Analog) : Analog Narrow Connect the deviation meter...
Page 85 NXR-901 ADJUSTMENT Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment 11. Test Tone 1) Channel: 3 (Center) Deviation Rear TX ANT ±1.50kHz ±0.05kHz Deviation Channel spacing meter : Analog Narrow Connect the deviation meter...
Page 86 NXR-901 ADJUSTMENT Receiver Section Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment 1 MCF 1) Narrow Tracking CN46 L232 Adjust it to look like Refer to Fig. 1. (Page 80) Tracking generator generator L246 the wave in ﬁ...
Page 87 NXR-901 ADJUSTMENT Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment 7. Tight 1) Channel spacing Rear Press [Apply] button to store Squelch : Analog Narrow Oscilloscope the adjustment value. Connect the SSG to the RX ANT.
Page 88 NXR-901 ADJUSTMENT Measurement Adjustment Item Condition Speciﬁ cations / Remarks Test- Unit Terminal Unit Parts Method equipment 11. Repeater 1) Channel spacing Rear ±1.00kHz ±0.10kHz Gain : Analog Narrow Deviation Connect the SSG to the RX ANT. meter TX ANT...
Page 89 To adjust the KXK-3 (M3) OCXO unit, some preparations are required. 1. The NXR-901 with the KXK-3 (M3) OCXO unit must be warmed up at least 72 hours before the adjustment is made. The environment temperature must be stable.
Page 90: Pc Board
NXR-901 PC BOARD FINAL UNIT (X45-3870-11) Component side view (J79-0346-09) R916 +B(13.8V) R915 R917 C918 C104 C102 C122 C105 C312 C148 J79-0346 C188 Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address Ref. No. Address IC11 IC21...
Page 91 NXR-901 PC BOARD FINAL UNIT (X45-3870-11) Component side view (J79-0346-09) CN20 TXIN CONT R142 CN34 CURR R501 R151 CN32 CN10 ANTSW C508 R506 C505 C506 C309 C305 C304 C311 C310 IC21 C302 R145 C195 J79-0346-09 A/4 J79-0346-09 C/4 J901 C900...
Page 92 NXR-901 PC BOARD FINAL UNIT (X45-3870-11) Foil side view (J79-0346-09) R156 R123 R121 R102 C198 C202 J79-0346-09 A/4 J79-0346-09 C/4 CN23 CN24 C908 L900 C902 CN26 CN25 C914 J79-0346-09 D/4 J79-0346-09 B/4 Ref. No. Address Ref. No. Address IC15 D902...
Page 93 NXR-901 PC BOARD FINAL UNIT (X45-3870-11) Foil side view (J79-0346-09) C170 R106 R105 R109 R108 R107 R137 C169 46-09 C/4 Component side Layer 1 Layer 2 Layer 3 Layer 4 Foil side...
Page 94 NXR-901 PC BOARD RX UNIT (X55-3120-11) Component side view (J79-0351-09) L210 R230 L203 R229 R227 CN13 CN26 CN30 C141 C143 C142 C114 C117 C115 C116 CN17 CN28 CN19 C823 IC809 R602 IC808 CN44 C832 Ref. No. Address Ref. No. Address Ref.
Page 95 NXR-901 PC BOARD RX UNIT (X55-3120-11) Component side view (J79-0351-09) CN46 L246 R253 R254 C256 R259 C253 R258 C261 R270 IC204 R230 C260 R256 C259 R229 R227 R237 C233 C235 L222 R273 C273 R268 R269 L223 C243 C267 C271 C270...
Page 96 NXR-901 PC BOARD RX UNIT (X55-3120-11) Foil side view (J79-0351-09) CN89 C313 R298 C370 R431 L249 C299 C296 C284 C281 C246 R312 C325 R300 C257 R242 C254 C252 CN88 C862 L288 R304 C251 C250 C247 IC205 C245 C244 C266 C237...
Page 97 NXR-901 PC BOARD RX UNIT (X55-3120-11) Foil side view (J79-0351-09) CN23 CN21 R861 C246 R242 Q201 C862 L211 C217 L290 L214 L205 C203 R202 C202 L202 C201 C212 C206 C214 C213 R218 C225 C224 L212 R212 L291 R219 C219 C226...
Page 98 NXR-901 PC BOARD TX UNIT (X56-3150-11) Component side view (J79-0347-09) C707 C713 R722 C721 C711 L701 C714 CN806 IC705 C710 IC703 C705 R712 C702 CN303 MB_CV1 C706 R711 IC702 CN15 CN16 CN119 CN109 IC810 L205 C840 C238 C233 R245 C216...
Page 99 NXR-901 PC BOARD TX UNIT (X56-3150-11) Component side view (J79-0347-09) IC809 8OCXO 1 R360 R357 C362 R363 R358 C363 R362 R359 R366 R368 Q311 IC808 L316 L315 C370 R365 R367 C373 C371 C809 C835 C309 CN405 CN406 REF1 REF2 C715...
Page 100 NXR-901 PC BOARD TX UNIT (X56-3150-11) Foil side view (J79-0347-09) C335 R512 IC506 C337 R342 C355 C329 L306 C352 C343 C341 R345 R330 R332 R333 C354 C618 R606 L403 C325 Q308 C333 C409 C336 C619 C324 C321 L310 C350 C401...
Page 101 NXR-901 PC BOARD TX UNIT (X56-3150-11) Foil side view (J79-0347-09) R717 C355 R352 C359 R714 C352 C343 L311 L313 R715 Q309 C354 L310 C350 R351 C347 C241 C349 R349 IC205 C245 R369 R277 IC208 C239 R609 L206 R608 R607 R243...
Page 102 NXR-901 PC BOARD CONTROL UNIT (X53-4132-XX) -71 : K -72 : For service Component side view (J79-0011-19) C372 R389 CN56 R552 SPG 2 R390 R553 C166 C170 C144 C141 R204 50MPU R201 50MPU R202 R198 C405 R211 STB1 R208 C226...
Page 103 NXR-901 PC BOARD CONTROL UNIT (X53-4132-XX) -71 : K -72 : For service Component side view (J79-0011-19) R535 C104 R534 4 SB C109 IC11 R108 CLEAR/ C106 CODE RXEO SCR_PTT RXEI SCRAMBLE C107 C108 R188 C130 IC10 R107 C105 AOUTL...
Page 104 NXR-901 PC BOARD CONTROL UNIT (X53-4132-XX) -71 : K -72 : For service Foil side view (J79-0011-19) R434 C500 C415 C403 C169 R171 R149 C189 R150 C446 C188 R457 R478 R415 C424 R441 C423 R154 C426 R173 R459 C425 R444...
Page 105 NXR-901 PC BOARD CONTROL UNIT (X53-4132-XX) -71 : K -72 : For service Foil side view (J79-0011-19) CN69 R475 R149 C204 C446 C188 R160 R161 R168 C477 R428 R429 C418 R430 C437 C419 R406 C396 R283 C212 C216 R195 C213...
Page 106 NXR-901 PC BOARD CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service Component side view (J79-0332-09) Component side view (J79-0332-09) CN713 IC329 C862 S700 R389 C443 C572 L325 IC306...
Page 107 CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service Component side view (J79-0332-09) R960 L326 C871 R961 L327 C817 C790 R834 C785 IC724 D03 CF C872 IC712 D04 CF R897 D05 CF D06 CF C784 D07 CF CE1A CF IC713 A10 CF C793...
Page 108 IC329 C862 S700 R389 C443 C572 L325 IC306 C818 IC708 L314 Q707 IC725 Q700 R779 C773 C820 C703 IC710 C707 C569 R731 IC726 R733 R727 C728 C449 D03 CF IC308 D04 CF D05 CF D06 CF R388 L313 C814 D07 CF R735 CE1A CF C712...
Page 109 NXR-901 PC BOARD CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service Component side view (J79-0332-09) CN713 C506 R442 R449 R423 R401 R487 R505 C526 C527 R535 C538 R530 R911 R686 R541 R403 Q301 R547 R446 R554 C504 R392...
Page 110 NXR-901 PC BOARD CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service Foil side view (J79-0332-09) Foil side view (J79-0332-09) C574 R680 C861 C570 R730 C730 C747 R319 R318...
Page 111 NXR-901 PC BOARD CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service Foil side view (J79-0332-09) C747 C588 C590 C592 C591 C594 C595 R517 C601 R622 R516 C598 R461 R631 R459 R460 R458 C599 C597 R417 C305 R457 C475...
Page 112 C574 R680 C861 C570 R730 C730 IC704 C717 R517 R516 CN716 C864 C863 C437 C426 R417 R552 C475 C544 C471 R398 C442 R567 R569 R912 R527 Q303 CN700 R591 C808 IC707 R935 C360 C359 C813 R934 C834 R951 IC728 Ref. No. Address Ref.
Page 113 CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service Foil side view (J79-0332-09) R319 R318 C355 C362 Q706 IC302 R885 C815 R884 R387 R915 R914 R907 CP91 CP90 L320 C420 C821 C436 C800 CP89 CP88 R875 L318 CP87 R876 IC719 R829 R903...
Page 114: Schematic Diagram
NXR-901 SCHEMATIC DIAGRAM FINAL UNIT (X45-3870-11) (A/4) VARIABLE ATTENUATOR R163 1.2k C202 RF POWER AMP C198 IC21 ADL5604ACPZ 0.01u CoNTROL_CURRENT1 CoNTROL_CURRENT2 GND1 GND4 16dBm MICROSTRIPLINE GND2 GND3 C194 C195 R145 C302 RF IN RFIN RFoUT RFIN1 RFoUT4 RFIN2 RFoUT3 IC20 : 5.03V...
Page 115 NXR-901 SCHEMATIC DIAGRAM FINAL UNIT (X45-3870-11) (A/4) : 0.36W : 0.1W ISOLATOR DIRECTIONAL COUPLER MICROSTRIPLINE R125 CN22 C310 C311 C312 C105 C122 C123 TX ANT REFLECT L39-1593-05 RF DETECTION : 2.35V RF DETECTION : 1.10V : 0V : 0V C104...
Page 116 NXR-901 SCHEMATIC DIAGRAM TX UNIT (LED) (X56-3150-11) (B/3) 3-STATE BUFFER 50MPU 50MPU IC922 TC7SET126FU-F SHIFT REGISTER R922 IC923 oUTY BU4094BCFV STRB DATA IC921 TC7SET126FU-F R923 3-STATE BUFFER oUTY C920 0.1u CN920 IC920 TC7SET126FU-F R921 oUTY 50MPU 3-STATE BUFFER SR_CLK SR_oE...
Page 117 NXR-901 SCHEMATIC DIAGRAM TX UNIT (LED) (X56-3150-11) (B/3) Note : The compo- nents marked with • a dot ( ) are parts of layer 1. Q923-926 Q927-930 DC SWITCH DC SWITCH 50MPU 50MPU SHIFT REGISTER SHIFT REGISTER IC924 IC925 BU4094BCFV...
Page 118 NXR-901 SCHEMATIC DIAGRAM TX UNIT (17SEG) (X56-3150-11) (C/3) Q975 UMG1N DC SWITCH C965 0.1u Q976 UMG1N DC SWITCH Q974 UMG1N DC SWITCH Q973 UMG1N DC SWITCH Q972 C964 UMG1N 0.1u DC SWITCH Q971 DC SWITCH UMG1N Q970 UMG1N DC SWITCH...
Page 119: Optional Accessories Kes-5 (External Speaker)
NXR-901 OPTIONAL ACCESSORIES: KES-5 (EXTERNAL SPEAKER) When Using an External Speaker Speciﬁ cations 1. Make sure the unit’s power is tuned off. Maximum input power ...........40W 2. When using the external speaker, remove the jumper Impedance ...............4 lead from the connector, and attach the speaker cable.
Page 120: M3) (Ocxo Unit)
NXR-901 OPTIONAL ACCESSORIES: KXK-3 (M3) (OCXO UNIT) Components Description Desti- Ref. No. Ad dress Parts No. Description parts nation ■ ACCESSORY UNIT (X42-3280-21) CK73GB1H104K CHIP C 0.10UF K CC73GCH1H060B CHIP C 6.0PF Ref. No. Part Name Description CE32AU1C330M CHIP EL...
Page 121 NXR-901 OPTIONAL ACCESSORIES: KXK-3 (M3) (OCXO UNIT) ACCESSORY UNIT (X42-3280-21) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation RK73GB2A471J CHIP R 1/10W R4 -6 RK73GB2A471J CHIP R 1/10W...
Page 122 NXR-901 OPTIONAL ACCESSORIES : KXK-3 (M3)(OCXO UNIT) PC Board ACCESSORY UNIT (X42-3280-21) Component side view (J79-0335-09) C105 J79-0335-09 Component side Ref. No. Address Ref. No. Address Layer 1 IC12 Layer 2 Layer 3 IC11 Layer 4 Foil side ACCESSORY UNIT (X42-3280-21) Foil side view (J79-0335-09)
Page 123 NXR-901 OPTIONAL ACCESSORIES: KXK-3(M3) (OCXO UNIT) SCHEMATIC DIAGRAM Schematic Diagram ACCESSORY UNIT (X42-3280-21) REF_SW_2 DC SW SSM6L05FU-F 100k DC SW 100p JDP4P02U 2.2u 680n 560n TX UNIT 0.1u 0.1u 0.1u X56-315 (A/3)-CN407 0.1u 0.1u RF AMP 2SC4617(R) 0.1u VOLTAGE REGULATOR...
Page 124: Specifications
....19.02 x 1.73 x 13.03 in (483 x 44 x 331 mm) Without *1: Analog measurements made per TIA/EIA 603A. Weight ..............11 lb (5kg) JVC KENWOOD Corporation reserves the right to change speciﬁ cations without prior notice or obligation. TRANSMITTER RF Power Output ..........
Page 125 NXR-901 NXR-901 PC BOARD PC BOARD FINAL UNIT (X45-3870-11) FINAL UNIT (X45-3870-11) Component side view (J79-0346-09) Component side view (J79-0346-09) CN20 TXIN R916 CONT +B(13.8V) R915 R917 R142 CN34 CURR R501 R151 CN32 C918 CN10 ANTSW C104 C508 R506 C505...
Page 126 NXR-901 NXR-901 PC BOARD PC BOARD FINAL UNIT (X45-3870-11) FINAL UNIT (X45-3870-11) Foil side view (J79-0346-09) Foil side view (J79-0346-09) C170 R106 R105 R109 R108 R107 R137 C169 R123 R156 R121 R102 C198 C202 J79-0346-09 A/4 J79-0346-09 C/4 CN24 CN23...
Page 127 NXR-901 NXR-901 PC BOARD PC BOARD CONTROL UNIT (X53-4132-XX) -71 : K -72 : For service CONTROL UNIT (X53-4132-XX) -71 : K -72 : For service Component side view (J79-0011-19) Component side view (J79-0011-19) C372 R389 CN56 R552 SPG 2...
Page 128 NXR-901 NXR-901 PC BOARD PC BOARD CONTROL UNIT (X53-4132-XX) -71 : K -72 : For service CONTROL UNIT (X53-4132-XX) -71 : K -72 : For service Foil side view (J79-0011-19) Foil side view (J79-0011-19) CN69 R475 R434 C500 C415 C403...
Page 129 NXR-901 PC BOARD CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service Component side view (J79-0332-09) Component side view (J79-0332-09) CN713 IC329 C862 S700 R389 C443 C572 L325 IC306...
Page 130 NXR-901 PC BOARD CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service CONTROL UNIT (X53-4140-XX) -10 : K -11 : For service Foil side view (J79-0332-09) Foil side view (J79-0332-09) C574 R680 C861 C570 R730 C730 C747 R319 R318...
Page 131 NXR-901 NXR-901 PC BOARD PC BOARD RX UNIT (X55-3120-11) RX UNIT (X55-3120-11) Component side view (J79-0351-09) Component side view (J79-0351-09) CN46 L246 R253 R254 C256 R259 C253 L210 R258 C261 R270 IC204 R230 C260 L203 R229 R227 R256 C259 R237...
Page 132 NXR-901 NXR-901 PC BOARD PC BOARD RX UNIT (X55-3120-11) RX UNIT (X55-3120-11) Foil side view (J79-0351-09) Foil side view (J79-0351-09) CN89 C313 CN23 CN21 R298 C370 R431 R861 L249 C299 C296 C284 C281 C246 R312 C325 R300 C257 R242 Q201...
Page 133 NXR-901 NXR-901 PC BOARD PC BOARD TX UNIT (X56-3150-11) TX UNIT (X56-3150-11) Component side view (J79-0347-09) Component side view (J79-0347-09) C707 C713 R722 C721 C711 L701 C714 CN806 IC705 C710 IC703 C705 R712 C702 CN303 MB_CV1 C706 R711 IC809 IC702...
Page 134 NXR-901 NXR-901 PC BOARD PC BOARD TX UNIT (X56-3150-11) TX UNIT (X56-3150-11) Foil side view (J79-0347-09) Foil side view (J79-0347-09) C335 R717 R512 IC506 C337 R342 C355 R352 C359 C329 R714 L306 C352 C343 L311 R715 C341 L313 R345 R330...
Page 135 FINAL UNIT (X45-3870-11) (A/4) VARIABLE ATTENUATOR R163 1.2k C202 RF POWER AMP C198 IC21 ADL5604ACPZ 0.01u CoNTROL_CURRENT1 CoNTROL_CURRENT2 : 0.36W GND1 GND4 : 0.1W 16dBm ISOLATOR DIRECTIONAL COUPLER MICROSTRIPLINE MICROSTRIPLINE GND2 GND3 R125 CN22 C194 C195 R145 C302 C310 C311 C312 C105 C122...
Page 136 TX UNIT (LED) (X56-3150-11) (B/3) Q923-926 Q927-930 DC SWITCH DC SWITCH 3-STATE BUFFER 50MPU 50MPU 50MPU 50MPU IC922 SHIFT REGISTER SHIFT REGISTER TC7SET126FU-F SHIFT REGISTER IC924 IC925 BU4094BCFV BU4094BCFV R922 IC923 oUTY BU4094BCFV STRB STRB STRB DATA DATA DATA IC921 TC7SET126FU-F R923 3-STATE BUFFER...
Page 137 TX UNIT (17SEG) (X56-3150-11) (C/3) Q975 UMG1N DC SWITCH C965 0.1u Q976 UMG1N DC SWITCH Q974 UMG1N DC SWITCH Q973 UMG1N DC SWITCH Q972 C964 UMG1N 0.1u DC SWITCH Q971 DC SWITCH UMG1N Q970 UMG1N DC SWITCH Q969 UMG1N DC SWITCH Q968 UMG1N DC SWITCH...
Page 138 X45-387 IC17 IC18 : N09-2292-05 17x3 D : N30-2606-48 X45-387 : N30-3016-43 : N32-3006-43 IC329 IC12 G : N32-4008-43 H : N67-3008-48 : N80-2006-43 : N80-2608-43 : N87-2608-48 X53-414 IC809 X45-387 703x2 IC808 IC29 X56-315 IC808 IC809 X53-413 703x4 X55-312 EXCITER X56-315 FINAL...
Page 139 NXR-901 APPENDIX 1 (BLOCK DIAGRAM) FINAL UNIT IC403 IC300 IC325 CONTROL UNIT TK71733S TX UNIT TC7SET126FU-F 30625MGP490GU IC21 IC20 X45-387 A/4 Q8,9 BER_CLK BER_CLK_L X53-414 CN22 935~941MHz X56-315 A/3 CN402 ADL5604ACPZ AV111-12LF RD01MUS1 SAW BPF 2SC5337 LC BPF 2SC5108(Y)Fx2 IC707...
Page 140 FINAL UNIT IC20 IC21 X45-387 A/4 CN22 935~941MHz AV111-12LF ADL5604ACPZ RD01MUS1 SAW BPF 2SC5 935~941MHz CN802 TX ANT L39-1593-05 SSM3K15TE(f) NJM2904E-ZB IC201 2SJ506-E HSM88AS-E BH2220FVM HSM88AS-E HSM88AS-E D_PC CN20 NJM2904E-ZB ANT_SW 2SK2539-7 PA_CURR VCo MoD 467.5~47 IC203 2SC4116(BL)F Ripple NJM2904E-ZB Filter DiFF PWR_CoNT...
Page 141 IC403 IC300 TX UNIT TK71733S TC7SET126FU-F Q8,9 BER_CLK BER_CLK_L X56-315 A/3 CN402 IC707 2SC5337 LC BPF 2SC5108(Y)Fx2 NJM78M05DL1AZB BER_EN BER_DAT BER_DAT_L CN402 IC810 IC315 IC319~IC321 PLL_12_SCLK4 NJM2878F4-33 ADF4001BRUZ TC7SET126FU-F IC301 PLL_12_SDo4 TC7SET126FU-F PLL_12_EN IC710 To IC5 NJM78M05DL1AZB IC318 TC7SH126FU-F Q300 PLL_12_LDT CN804 Q13,Q14...
Page 142 CONTROL UNIT IC325 30625MGP490GU X53-414 R_CLK_L BER_EN R_DAT_L 2_SCLK4 12_SDo4 L_12_EN REF_SW,REF_SW2 EXT_EXiST,REF_EXiST REF_iN_oUT,oX_SDi2 _12_LDT oCXo_VR_EN,oCXo_oN oCXo_EXIST,oCXo_CURR VCXo_DA_EN,REF_LDT internal PLL_19_EN,PLL_19_CE SPEAKER TEST/SPKR oX_SDo2,oX_SCLK2 CN400 oX_SCL,oX_SDA X56-315 A/3 33MPU S700 CN805 DiPSW1,2 Q22,Q23 2SD2114K(W) RT1N441M-T111 RX_PWR_SAVE,AMP_SW,AF_MUTE, Over Ao1_N 2SA1955A-F current EVoL_DATA,EVoL_LD,EVoL_CLK Protectio oCXo_ST_G,oCXo_ST_R,BEEP,PWR_ST_R Over...
Page 143: Appendix 1 (Block Diagram)
NXR-901 APPENDIX 1 (BLOCK DIAGRAM) CONTROL UNIT X53-413 Over current SMD185F-2 Protection Ao1~5 IC22 TX UNIT TX UNIT BU4094BCFV SR_CLK,SR_DATA CN920 CN960 SR_oE,STB X56-315 B/3 X56-315 C/3 CN921 50MPU 50MPU 50MPU 50MPU SR_CLK 50MPU IC920 SR_oE,STB1 STB1,CLK,oE TC7SET126FU-F STB,SR_CLK STB1...
Page 144 JDP4P02U X56-315 A/3 CN407 RF_AGC RX UNIT DAC_Po3 D203 IC204 Q202 IC204 X55-312 NJM2732V HSM88AS-E 2SC5636 NJM2732V LNA_B Q201 IC205 Q211 Narrow FM Q204 IC207 NESG220034 L210 ADL5801ACPZ NESG220034 NESG220034 L203 TA31136FNG 896~902MHz RX ANT iF AMP iF AMP IC202 1st IF: 73.05MHz AV111-12LF CF201...
Page 145 WE3/DQM3 D16~D31 SDRAM RD/CASS IC12 EEPROM CS3,RAS AD7418ARMZ oX_SCL CKE,CKio oX_SDA IC719 LAN91C111i-NU SSM6L05FU NLEDA J700 NLEDA LAN_iNT oCXo_CURR NLEDB NLEDB TP1+,TP1- EEDi TPi+,TPi- oCXo_oN A1~A15 IC720 TP0+,TP0- EEDo TPo+,TPo- AT93C46DN-SH D0~D31 EESK X56-315 A/3 EECS REF_SW2 WE1/DQM1 CN803 RD/CASS CS1,LAN_32 IC711 AD5231BRU10...
Page 146 SYS_RST SYS_RST IC325 IC28 SC_SH,E_PTT_SH TC7SH126FU-F IC32,33 SRXo_ATXo A_TXDo Hi_VoL_DET 50MPU_CoNT 50MPU_CoNT Hi_VoL_DET IC325 50MPU 50MPU DC50 DC50 33SH DN-SH 33SH 33MPU 33MPU 50MPU_A 50MPU_A S700 33MPU_A 33MPU_A DiPSW3,DiPSW4 A16C_CK_SFT,ADSP_CK_SFT LAN_iNT BER_CLK,BER_DAT BER_CLK,BER_DAT CN58 IC300,301 2SC4738F IC705 A16C CK SFT CN713 ADM3202ARUZ SD,RTS...
Page 147 X56-315 A/3 BLoCK CN804 SDA,SCL,WP TEMP_PRT,ANT_SW 440_EN,440_CE 132_EN,132_CE 2DA_EN,2DA_CE 3DA_EN,8AD_EN,SDo1 SDi1,SCLK1 VER,LDT io1~io6,SC CN58 Ai1~Ai3,EMoN, E_PTT Surge protect SC_SH E_PTT_SH E_PTT CoNTRoL I/O IC32,33 TC7SH126FU-F RA,TA,RD,TD AUDio BLoCK BER_DAT BER_CLK AUDIO BLOCK MiC_D_iN 2732V MoD_D_oUT CN56 CN58 IC25 IC29 TC7S66FUF LA4425A CN59 2SJ506-E(S)
Page 148 FINAL UNIT IC403 IC300 IC325 CONTROL UNIT TK71733S TX UNIT TC7SET126FU-F 30625MGP490GU IC21 IC20 X45-387 A/4 Q8,9 BER_CLK BER_CLK_L X53-414 CN22 935~941MHz X56-315 A/3 CN402 ADL5604ACPZ AV111-12LF RD01MUS1 SAW BPF 2SC5337 LC BPF 2SC5108(Y)Fx2 IC707 935~941MHz CN802 NJM78M05DL1AZB BER_EN BER_DAT TX ANT CN402 BER_DAT_L...
Page 149 NXR-901 APPENDIX 2 (INTERCONNECTION DIAGRAM) TEST/SPKR (PANEL ViEW) FINAL UNIT CONTROL I/O (PANEL VIEW) X45-387 D/4 CN923 CN905 CN960 CN920 VOLUME_IN VOLUME_IN TX UNIT 33MPU 33MPU X56-315 C/3 TX UNIT J901 X56-315 B/3 50MPU 50MPU 33AUD 33AUD PTT_TXD_SCM SR_oE SR_oE...
Page 150 CN960 CN920 TX UNIT X56-315 C/3 50MPU SR_oE SR_CLK SR_DATA LED 1 LED 10 RX UNIT X55-312 CN42 CN57 D_GND D_GND E2PRoM_S E2PRoM_SDA CoNT_5.0V CoNT_5.0V E2PRoM_SC E2PRoM_SCL D_GND D_GND AD_CS AD_CS iF_BW_SW iF_BW_SW AD_DAT_W AD_DAT_WRiTE NC(iF_NW_ NC(iF_NW_SW) AD_CLK AD_CLK CN45 20.0MHz REF_SIG AD_DAT_R AD_DAT_READ...
Page 151 TEST/SPKR (PANEL ViE FINAL UNIT X45-387 D/4 CN923 CN905 N920 VOLUME_IN VOLUME_IN 33MPU 33MPU TX UNIT J901 X56-315 B/3 50MPU 33AUD 33AUD PTT_TXD_SCM SR_oE SCM_EN SCM_EN SR_CLK HOOK_RXD_SCM SCM_EN SR_DATA PTT_TXD_SCM PTT_TXD_SCM LED 1 HooK_RXD_SCM HOOK_RXD_SCM LED 10 oM_SDA _5.0V oM_SCL W_SW AT_WRiTE...
Page 152 NEL ViEW) CONTROL I/O (PANEL VIEW) OPTION INT SP CN56 CN804 CoNT_5.0V CoNT_5.0V D_GND D_GND CoNT_5.0V CoNT_5.0V D_GND D_GND D_GND D_GND TEMP_PRT TEMP_PRT ANT_SW ANT_SW VR_EN VR_EN 440_EN 440_EN 132_EN 132_EN 440_CE 440_CE 132_CE 132_CE 2DA_EN 2DA_EN 3DA_EN 3DA_EN 2DA_CE 2DA_CE SR_oE SR_oE...
Page 153: Appendix 2 (Interconnection Diagram)
NXR-901 APPENDIX 2 (INTERCONNECTION DIAGRAM) PTION (OCXO) KXK-3 M3 FINAL UNIT X45-387 A/4 CN20 CN806 NC(FAN_CURR2) NC(FAN_CURR2) CN22 TX ANT PA_CURR PA_CURR FAN_CURR FAN_CURR FWD_PWR FWD_PWR RFL_PWR RFL_PWR FAN 1 PA_BiAS PA_BiAS PWR_CONT PWR_CONT FAN_CONT FAN_CONT FAN_CONT2 FAN_CONT2 TEMP_RST TEMP_RST...
Page 154 RX_IF_VN...
Page 155 CONTROL UNIT2 X53-414 CN23 CN25 CN27 FINAL UNIT FINAL UNIT X45-387 C/4 X45-387 B/4 CN28 CN26 CN24 CN29 CN30 PC CONTROL...
Page 156 CN805 CN400 REF_SW2 REF_SW2 REF_SW REF_SW oX_SCL oX_SCL EXT_EXiST EXT_EXiST oX_SDA oX_SDA REF_EXiST REF_EXiST iMP_H_L iMP_H_L REF_iN_oUT REF_iN_oUT oX_SDi2 oX_SDi2 oCXo_VR_EN oCXo_VR_EN oCXo_oN oCXo_oN oCXo_CURR oCXo_CURR oCXo_EXiST oCXo_EXiST VCXo_DA_EN VCXo_DA_EN REF_LDT REF_LDT PLL_19_EN PLL_19_EN PLL_19_CE PLL_19_CE oX_SDo2 oX_SDo2 oX_SCLK2 oX_SCLK2 33MPU 33MPU REF2(20.0MHz)
Page 157 TX UNIT D_GND D_GND X56-315 A/3 CN21 CN802 TX SIGNAL CN801 REF_IN(10MHz) CN408 REF_OUT(10MHz) CN403...
Page 158 TEST/SPKR (PANEL ViEW) FINAL UNIT CONTROL I/O (PANEL VIEW) X45-387 D/4 CN923 CN905 CN960 CN920 VOLUME_IN VOLUME_IN TX UNIT 33MPU 33MPU X56-315 C/3 TX UNIT J901 x56-315 B/3 50MPU 50MPU 33AUD 33AUD PTT_TXD_SCM SR_oE SR_oE SCM_EN SCM_EN SR_CLK SR_CLK HOOK_RXD_SCM OPTION (OCXO) INT SP SR_DATA...
Page 159 NXR-901 CONTROL UNIT1 (X53-4132-XX) APPENDIX 3 AF PA (SCHEMATIC DIAGRAM X53-413) IC29 C190 R163 R441 OP AMP C225 0.1u C436 R469 C103 R293 SHIFT R100 R178 RESISTER R442 BU4094BCFV R294 100p NJM2734V R133 ANALOG SW R127 R448 SCR_PTT 50MPU MULTIPLEXER...
Page 160 CONTROL UNIT1 (X53-4132-XX) R441 SHIFT RESISTER R442 BU4094BCFV MULTIPLEXER R448 SCR_PTT 50MPU SCR_PTT STRB BU4053BCFV DATA SR_CLK R445 R446 R449 R444 POWER SW R443 R457 HN1L02FU(F) Q’S R458 SR_oE 100k R450 CLEAR DATA_iN /CoDE R451 R452 RXEo R453 RXEi R454 TAAD_SW F53-0315-15 MiC_SW...
Page 161 C190 R163 OP AMP C436 C103 R469 R100 R178 NJM2734V 100p R133 R127 MULTIPLEXER C122 100p AoUTPUT DoUTPUT C197 BU4053BCFV 100k 120k R175 A-INPUT R400 OP AMP D-INPUT C128 R102 R401 A+INPUT OP AMP IC12 IC21 D+INPUT R103 100p NJM2732V C177 100p NJM2734V...
Page 162 AF PA IC29 C225 0.1u R293 R294 ANALOG SW IC25 TC7S66FUF CLOCK CLOCK SHIFT SW SHIFT SW IN/oUT L77-1987-05 2SC4738F oUT/IN C275 16.515072MHz C281 2SC4738F C239 NAND GATE CoNT 1000u25 IC23 TC7SH00FU-F AF MUTE SW RT1N141M-T111 oUTY C215 0.1u POWER SW C408 R412 ADSP_CK_SFT...
Page 163 NXR-901 APPENDIX 3 (SCHEMATIC DIAGRAM X53-413) FT SW C4738F Note : The components marked with a dot (•) are parts of layer 1. mV:AC voltage value measured with an electronic voltmeter. The unit is mVrms. V:DC voltage value rms:60% modulation TX signal or RX signal...
Page 164 Lo_Vol_DET Lo_VoL_DET TD_SW TD_SW MiCAD_SW MiCAD_SW 3.3V MiC_SW MiC_SW RXAD_SW RXAD_SW PATH_SW PATH_SW BEEP_SW BEEP_SW TA_SW TA_SW TAAD_SW TAAD_SW R419 EVOL_LD EVOL_LD EVOL_CLK EVOL_CLK XC6209B332P-G PTT_AM16C R474 VOLTAGE REGULATOR EVOL_DATA EVOL_DATA iNSP_SW AF_MUTE AF_MUTE SCM_EN R438 SCM_EN AMP_SW AMP_SW HooK_RXD_SCM R439 iNRA_SW MiC_D_IN...
Page 165 R131 P10/D8 P07/AN17/D7 P03/AN13/D3 P06/AN16/D6 P05/AN15/D5 P02/AN12/D2 P04/AN14/D4 P01/AN11/D1 DQ11 P00/AN10/D0 C120 1000p P117 C121 DQ13 P116 FLASH MEMORY DQ15/A-1 P115 IC17 M29W80DB70Z6E VSS1 P114 P113 LATOR P112 P111 P110 VSS2 P107/AN07/KI3 TX_DDS_EN P106/AN06/KI2 TX_PLL_440_EN P105/AN05/KI1 R137 SYS_RST TX_PLL_440_CE P104/AN04/KI0 TX_PLL_132_EN P103/AN03 TX_PLL_132_CE...
Page 166 R261 DSP_RS P125 DSP_iNT P126 P127 P50/WRL/WR R254 R267 0/D8 P51/WRH/BHE 07/AN17/D7 P52/RD 06/AN16/D6 R268 05/AN15/D5 P53/BCLK STB_L 04/AN14/D4 P130 P131 PAG_SW_L P132 TX_SR_oE P133 RSSi P54/HLDA R270 P55/HoLD IC34 R269 30625MGP490GU P56/ALE HRDY P57/RDY/CLKoUT TX_SR_EN P134 TX_VR_EN P135 SR_DATA_C P136 SR_CLK_C P137...
Page 167 FM NARROW AD_CS RX_8AD_EN R363 iF_BW_SW RX_iF_BW2 R364 AD_DAT_WRiTE NC(iF_NW_SW) RX_iF_BW1 R374 AD_CLK AD_DAT_READ RX_SDi0 R365 CoNT_5.0V PLL_LoCK_DET RX_LoCK_DET R366 NC(AGC_RSSi) PLL2_EN RX_PLL2_EN R367 FM_RSSi RSSi R368 CN61 PLL_PWR_SAVE RX_PLL_PWR_SAVE R375 RX_AUDio R359 SiF_DAT RX_SDo0 R376 SiF_CLK RX_SCLK0 R369 DA_EN RX_3DA_EN R377 PLL1_EN...
Page 168 CONTROL UNIT1 (X53-4132-XX) AF PA IC29 C190 R163 C225 0.1u R441 C436 C103 OP AMP SHIFT R469 R293 R100 R178 R442 BU4094BCFV RESISTER 100p NJM2734V ANALOG SW R294 R127 R133 R448 SCR_PTT 50MPU MULTIPLEXER IC25 SCR_PTT C122 100p STRB AoUTPUT TC7S66FUF DoUTPUT BU4053BCFV...
Page 169 NXR-901 APPENDIX 4 (SCHEMATIC DIAGRAM X53-414) CONTROL UNIT2 (X53-4140-XX) C359 0.1u 33MPU R484 33MPU-2 BUFFER IC300 TC7SET126FU-F oUTY BER_CLK_L BER_EN C360 0.1u BUFFER IC301 TC7SET126FU-F oUTY BER_DAT_L BER_EN CN400 50MPU BER_DAT R516 BER_CLK C516 R517 R518 REF_SW2 R322 REF_SW2 1000p...
Page 170 CONTROL UNIT2 (X53-4140-XX) C359 0.1u 33MPU BUFFER IC300 TC7SET126FU-F oUTY BER_CLK_L BER_EN C360 0.1u BUFFER IC301 TC7SET126FU-F oUTY BER_DAT_L BER_EN CN400 50MPU BER_DAT BER_CLK REF_SW2 R322 REF_SW2 WP(SYS-RST) R927 SYS_RST REF_SW R323 REF_SW oX_SCL R928 oX_SCL VSS2 EXT_EXiST R324 EXT_EXiST D_D6 oX_SDA R929...
Page 171 R484 33MPU-2 R516 C516 R517 R518 1000p oCXo_ST_G D_A3 oCXo_ST_R R662 BER_DAT_L D_A7 P125 D_D7 R663 BER_CLK_L D_CS1 P126 D_D6 R664 P127 D_D5 D_A11 P50/WRL/WR ASH MEMORY D_D4 D_WR D_A15 P51/WRH/BHE IC314 D_D3 D_RD D_A2 P52/RD D_D2 D_A6 P53/BCLK D_D1 EVOL_LD P130 D_D0...
Page 172 PC CONTROL CN713 33MPU-2 S700 S79-0473-05 EARTH_3 R702 R703 R709 100k R710 100k C818 0.1u C750 BUFFER IC725 RS-232C TC7SH126FU-F DRIVER/RECIEVER D701 oUTY IC705 ADM3202ARUZ 1SS388F C751 C746 C747 0.01u T1oUT C748 R1IN R1oUT C749 T1IN T2oUT T2IN R2IN R2oUT R756 MIC SW Q707...
Page 173: Appendix 4 (Schematic Diagram X53-414)
NXR-901 APPENDIX 4 (SCHEMATIC DIAGRAM X53-414) R960 X53-4140-XX IC329 R960 R961 R961 -11 (for Service) BA33DD0WT Note : The components marked with a dot (•) are parts of layer 1. RTH_3 C781 0.1u NAND GATE IC711 TC7SH00FU-F oUTY C850 C799 0.01u...
Page 174 VOLTAGE PROTECTOR R371 D702 1SS355 HooK_RXD_SCM R932 AMP_SW R372 AMP_SW 33MPU SCM_EN R933 SCM_EN R951 AF_MUTE R373 AF_MUTE iNSP_SW R948 100k EVOL_DATA R374 EVOL_DATA PTT_AM16C R946 BUFFER EVOL_CLK R375 EVOL_CLK IC728 TC7SH126FU-F EVOL_LD R376 EVOL_LD oUTY TAAD_SW R916 TAAD_SW TA_SW R377 TA_SW BEEP_SW...
Page 175 R650 INT1 R651 INT0 R626 R446 R460 EMU0_D D_A1 HBIL D_D4 IACK R607 R461 EMU1_D BDX2 R608 TX_CoSDTi BDX0 D_D0 C584 D_D5 DVSS6 0.01u DVDD4 CVDD6 R627 TX_DSP_RDY C576 HRDY IC324 CVSS10 D_RD BFSX2 0.01u HDS1 R609 TX_CoLRCK BFSX0 C583 DVSS8 VOCODER CVDD4...
Page 176 BU482 CAN0_RX/AUDATA<2> VSSQ3 CAN1_TX/AUDATA<1> VSSQ4 VSSQ5 CAN0_TX/AUDATA<0> R917 RESERVED/AUDATA<3> VSSQ6 RESERVED/AUDATA<2> VSSQ7 R909 VSSQ8 RESERVED/AUDATA<1> VSSQ9 ADTRG/AUDATA<0> RESERVED/AUDSYNC AVSS_ADC IC703 RESERVED/AUDCK VSSQ10 VSSQ11 TRST VSSQ12 VSSQ13 VSSQ14 VSSQ15 ASEBRK/BRKACK VSSQ16 VSSQ17 VSSQ18 VSSQ19 MD6/IoIS16 VSSQ20 R712 MD4/CE2B VDD-PLL1 R713 VDD-PLL3 MD3/CE2A R714 VDD-PLL2...
Page 177 BU4829FVE IC708 VOLTAGE IC720 R830 AT93C46DN-SH DETECTOR 100k EECS 3.3V VoUT EESK EEDo EEDi TAAD_SW RXAD_SW C802 0.1u CONTROL SW IC721 TC7SH08FU-F Q706 LTC014EUBFS8 oUTY R781 100k R782 100k R794 100k R783 100k AND GATE R784 100k CE2A R785 2.7k C812 R786 100k...
Page 178 CONTROL UNIT2 (X53-4140-XX) C359 0.1u R484 33MPU 33MPU-2 BUFFER IC300 TC7SET126FU-F oUTY BER_CLK_L BER_EN C360 0.1u BUFFER IC301 TC7SET126FU-F oUTY BER_DAT_L BER_EN CN400 50MPU BER_DAT R516 C516 R517 BER_CLK REF_SW2 R322 REF_SW2 R518 R960 1000p WP(SYS-RST) R927 SYS_RST oCXo_ST_G X53-4140-XX IC329 R960 R961...
Page 179 NXR-901 APPENDIX 5 (SCHEMATIC DIAGRAM X55-312) RX UNIT (X55-3120-11) R244 R380 C416 470p IC204 L286 NJM2732V DETECTOR IF AMP C411 4.95V L34-4725-05 D203 Q202 220p 2.05V B+INPUT R253 C260 R261 C262 C263 R272 2SC5636 R235 C282 C452 R442 C289 B-INPUT A+INPUT 0.01u...
Page 180 RX UNIT (X55-3120-11) R244 IC204 NJM2732V B+INPUT R235 B-INPUT A+INPUT BoUTPUT A-INPUT AoUTPUT OP AMP C246 IC202 IC202 VARIABLE AV111-12LF C865 CN76 ATTENUATOR 0.75p -119.4dBm CoNTROL_CURRENT1 CoNTROL_CURRENT2 GND4 GND1 R861 4.79V L210 GND3 GND2 L79-1954-05 DETO L290 R209 C215 C217 C221 C229 1.87V...
Page 181 DETECTOR IF AMP 4.95V D203 Q202 2.05V R253 2SC5636 C260 R261 C262 C263 R272 C282 C452 R442 C289 0.01u 0.01u 0.01u 0.01u HSM88AS-E 1.27V C862 C865 0.75p CN46 -97.2dBm R265 C269 0.01u 4.07V L221 R300 C325 R312 C335 C339 R431 C370 GND9 IF AMP...
Page 182 L286 L34-4725-05 C442 R400 0.033u 330k DB3J C431 0.033u Q214 2SC4617(S) NOISE CN47 DB3J R365 -83.3dBm R413 10k C404 R412 18k 0.01u C378 R346 IC210 0.01u NJM2732V IC207 TA31136FNG AoUTPUT FM IF R391 C434 R399 L251 SYSTEM IC A-INPUT BoUTPUT L284 C405 1.5k...
Page 183: Appendix 5 (Schematic Diagram X55-312)
NXR-901 APPENDIX 5 (SCHEMATIC DIAGRAM X55-312) R380 C416 470p C411 220p C414 220p R828 100k C851 0.1u C859 0.1u R855 100k R829 100k R847 100k D214 DETECTOR C442 0.033u R830 100k R845 100k R848 100k R856 100k DB3J314F0L D215 IC812...
Page 184 OP AMP DA221 OP AMP LMC7101BIM5 OUTPUT INPUT+ INPUT- 270k 8.17V 1SV278F 35.5n D1,2 FREQUENCY CONTROL FREQUENCY CONTROL RIPPLE FILTER 8.13V 2SC4116(BL)F 4.12V 22u16 22u16 2SC4116(BL)F 1.14V PLL ACTIVE 0.65V FILTER AMP R802 2SC4116(BL)F PLL ACTIVE FILTER AMP REFERENCE 5.06V SIGNAL AMP 1.63V 2SC4617(R)
Page 185 P AMP 2SC4116(BL)F RIPPLE FILTER C116 2SK508NV(K53) 8.26V 35.5n 0.5p 3.15V 2.10V C115 2.57V OSCILLATOR 2nd LO 2SC5108(Y)F 1st LOCAL Q605 RIPPLE FILTER 9VCO R622 R623 R636 IC601 OP AMP LMC7101BIM5 Q605 2SC4116(B 2.09V OUTPUT R648 CN64 INPUT+ INPUT- 1st LOCAL C648 5.07V C607...
Page 186 R809 E FILTER R654 Q605 2SC4116(BL)F R648 R651 R666 1.58V 8.98V C702 R668 L620 R649 C676 1000p 2nd LOCAL Q609 2SC4725 0.92V 2nd LOCAL 5.06V VOLTAGE REGULAT L617 Q608 C667 C672 1.55V 5DIF 2SC4725 220n C697 1000p 0.99V VOLTAGE REGULAT R645 SWITCH L619...
Page 187 AD_DAT_WRITE IF_BW_SW AD_CS IC805 BH2220FVM D_GND R810 100 R813 10 R832 E2PROM_SCL 100k R811 100 R814 10 CoNT_5.0V R812 100 R815 10 C855 E2PROM_SDA 470p SWITCH D_GND Q801 SSM3K15TE(F) C854 470p IC813 C853 S24CS02AFJTBG 0.1u EEPROM VOLTAGE REGULATOR CN44 IC808 KIA7805API FINAL UNIT POWER...
Page 188 RX UNIT (X55-3120-11) R244 R380 C416 470p IC204 L286 NJM2732V DETECTOR IF AMP C411 4.95V L34-4725-05 D203 Q202 220p 2.05V B+INPUT R253 2SC5636 C260 R261 C262 C263 R272 R235 C282 C452 R442 C289 B-INPUT A+INPUT 0.01u 0.01u 0.01u 0.01u C414 HSM88AS-E BoUTPUT A-INPUT...
Page 189 NXR-901 APPENDIX 6 (SCHEMATIC DIAGRAM X56-315 A/3) TX UNIT (X56-3150-11) (A/3) R801 VOLTAGE CN110 CN114 CN118 D2-5 REGULATOR CN104 CN108 CN112 CN116 CN120 FREQUENCY CONTROL NJM2386ADL3-09 +16dBm 935~941MHz CN802 FINAL UNIT E23-1280-05 1SV283F 2SK2539-7 TX oUT C175 X45-387 (A/4) -CN1 0.5p...
Page 190 TX UNIT (X56-3150-11) (A/3) R801 CN110 CN114 CN118 D2-5 CN116 CN104 CN108 CN112 CN120 FREQUENCY CONTROL E23-1280-05 1SV283F C175 R26 68k C177 CN115 CN119 CN109 CN113 CN117 LMC7101BIM5 DA221 E23-1280-05 OUTPUT CV_ADJ2 INPUT+ 470p INPUT- OP AMP VCO_MOD SPEED-UP DIODE MODULATION C 0.01u OP AMP...
Page 191 VOLTAGE REGULATOR NJM2386ADL3-09 2SK2539-7 0.5p 13.8V RIPPLE 1.0V FILTER AMP 7.9V OSCILLATOR 2SC4116(BL)F 7.9V 470p 470p 470p : 5.5V R : 0V 180k 470p 470p ULATION CONTROL RF AMP 2SC5108(Y)F 7.9V C169 1.6V C110 C111 L39-1498-05 : 0.6V 3.9n 3.9n C170 : 0V 470p...
Page 192 DC SWITCH GND SPRING CN130 E23-1330- SSM3J01F R107 : 8V 470k : 8V : 0V CN811 SSM3K15TE(F) : 0V OUTPUT C134 INDICATOR C142 3.6n 6.8n 6.8n DC SWITCH RF AMP : 1.5V L79-1953-05 C124 C125 C129 C130 R : 0V RD01MUS1-T113 1.5n C169...
Page 193: Appendix 6 (Schematic Diagram X56-315 A/3)
NXR-901 APPENDIX 6 (SCHEMATIC DIAGRAM X56-315 A/3) +16dBm 935~941MHz CN802 FINAL UNIT TX oUT X45-387 (A/4) -CN1 VOLTAGE REGULATOR CN801 ND SPRING IC808 : 13.6V KIA7808API CN130 R : 13.7V E23-1330-05 FINAL UNIT 13.8V X45-387 (C/4) -CN12 CN804 DC SWITCH...
Page 194 OSC-3 0.01u R226 C236 C238 DGND X201 REFIN 100k R213 1k C217 L77-3066-05 3.2V 132_CE R279 C271 AVDD A-10 L204 L205 0.01u R214 1k C218 C242 C265 1.8k 0.01u oUTPUT SCLK1 C258 R259 C259 RFINA 330n 390n 0.01u 0.01u R207 1k C215 0.01u 0.01u...
Page 195 0.3V INPUT+ OSC-3 REF_LDT 2SA1832F C303 INPUT- 100k MB_CV2 X201 CN809 L303 7-3066-05 470p L301 CN304 R317 CHK1.0B CHK1.0B Q301 1.7V REF_LDT SSM3K15TE(F) OP AMP R319 R320 19.2MHz Q403,404 R411 Q403 2.1V DC SWITCH OP AMP SSM3K15TE(F) 100k MB_CV1 Q404 SSM3J01F CN303 INT VCXO...
Page 196 A-16 C333 R337 C334 Q307 oUTPUT 0.01u 1.8k 0.01u 2SC4617(R) 3.1V C337 2.5V 20.0MHz R369 R357 0.01u REFERENCE SIGNAL AMP 5.99MHz IC403 DDS IC TK71733S 3.3V 3.3V IC401 C438 AD9835BRUZ VoUT 0.01u R419 BUFFER AMP OSC-5 3.9k C435 C439 FSADJUST LPF16 IC402 CoMP...
Page 197 RFL_PWR RFL_PWR A-13 1.4V FWD_PWR C368 20.0MHz DSP_20.0MHz FWD_PWR R357 C362 Q310 0.01u 2SC4617(R) FAN_CURR 0.9V FAN_CURR REFERENCE SIGNAL AMP PA_CURR VOLTAGE REGULATOR PA_CURR NC(FAN_CURR2) IC707 NJM78M05DL1AZB LPF12 C813 CN406 L802 RX UNIT 20.0MHz REF1 X55-312 270n -CN45 C811 CN405 L801 CONTROL UNIT2 20.0MHz...
Page 198 TX UNIT (X56-3150-11) (A/3) R801 VOLTAGE D2-5 CN110 CN114 CN118 REGULATOR CN116 NJM2386ADL3-09 CN104 CN108 CN112 CN120 FREQUENCY CONTROL +16dBm 935~941MHz CN802 FINAL UNIT E23-1280-05 1SV283F 2SK2539-7 TX oUT X45-387 (A/4) C175 -CN1 0.5p 13.8V RIPPLE R26 68k C177 1.0V FILTER AMP VOLTAGE REGULATOR CN115...

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