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Kenwood NX-700 Service Manual
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Kenwood NX-700 Service Manual

Vhf digital transceiver
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See also: Instruction Manual
VHF DIGITAL TRANSCEIVER
NX-700/700H
Service MANUAL
General .....................................................2
System Set-Up .........................................4
Realignment ...........................................5
Installation ............................................7
Disassembly For Repair ....................14
Circuit Description ............................17
Components Description .................23
Parts List ...............................................26
Exploded View ......................................39
Packing ....................................................40
Trouble Shooting ..............................41
RoHS
This product complies with the
Key top
(K29-9401-03)
CONTENTS
directive for the European market.
© 2008-4 PRINTED IN JA PAN
B51-8822-00 ( N ) 446
Cover
(A01-2194-11)
Panel assy
(A62-1162-03)
Microphone
(T91-0639-35)
Adjustment ..........................................44
Terminal Function .............................62
PC BOARD
Display Unit (X54-3640-10) ...............72
Interconnection Diagram ..............79
Schematic Diagram ............................80
Block Diagram .....................................98
Level Diagram ....................................100
Specifications ...................BACK COVER
This product uses Lead Free solder.

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Summary of Contents for Kenwood NX-700

  • Page 1 VHF DIGITAL TRANSCEIVER NX-700/700H SERVICE MANUAL © 2008-4 PRINTED IN JA PAN B51-8822-00 ( N ) 446 Cover (A01-2194-11) Key top Panel assy (K29-9401-03) (A62-1162-03) Microphone (T91-0639-35) CONTENTS GENERAL .............2 ADJUSTMENT ..........44 SYSTEM SET-UP .........4 TERMINAL FUNCTION ......62 REALIGNMENT ...........5 PC BOARD INSTALLATION ..........7...

  • Page 2: General

    Neither is any liability assumed for dam- ages resulting from the use of the information contained PRE-INSTALLATION CONSIDERATIONS herein. Kenwood reserves the right to make changes to any products herein at any time for improvement purposes. 1. UNPACKING...
  • Page 3 5-1. Antenna system Control station. The antenna system selection depends on many factors and is beyond the scope of this manual. Your KENWOOD dealer can help you select an antenna sys- tem that will best serve your particular needs. 5-2. Radio location...

  • Page 4: System Set-Up

    NX-700/700H SYSTEM SET-UP Merchandise received Frequency range RF power Type License and frequency allocated by FCC 136.0~174.0MHz Choose the type of transceiver 136.0~174.0MHz Are you using See page 9. KRK-10 the remote kit? (Option) Are you using See page 7.

  • Page 5: Realignment

    NX-700/700H REALIGNMENT 1. Modes 5. PC Mode 5-1. Preface User mode The transceiver is programmed by using a personal com- puter, programming interface (KPG-46/46A) and program- Panel test mode Panel tuning mode ming software (KPG-111D). The programming software can be used with a PC or compatible.

  • Page 6: Clone Mode

    NX-700/700H REALIGNMENT 5-3. KPG-46/KPG-46A description 6. Press write button in the window. When the transceiver starts to receive data, the [LOADING] display lights. (PC programming interface cable: Option) 7. If writing ends successfully, the checksum is calculated The KPG-46/46A is required to interface the transceiver and a result is displayed.

  • Page 7: Installation

    NX-700/700H REALIGNMENT operates in the User mode. The slave can then be oper- • How to enter the password with the microphone key- ated by the same program as the master. pad; 7. The other slave can be continuously cloned. When the If you press a key while “CLONE LOCK”...
  • Page 8 NX-700/700H INSTALLATION 5. Place the relay unit at the position shown in Figure 2-2 2. Horn Alert/P.A. Relay Unit (KAP-2: Option) and secure it to the chassis with a screw. The Horn alert (max. 2A drive), Public address and Exter- 6.
  • Page 9 NX-700/700H INSTALLATION ■ Install the KRK-10 main panel onto the transceiver 3. Control Head Remote Kit (KRK-10: Option) 4. Insert the fl at cable that was removed in step 2 above The KRK-10 remote kit is used to remotely operate the into the connector (CN1) of the interface unit (A/2) of the transceiver.
  • Page 10 NX-700/700H INSTALLATION 10. Install the molded cover ( !3 ) over the connector on the ■ Connect the KRK-10 main panel to the rear main panel and secure it with two screws ( !4 ). panel with the cable 11. Insert the other 14-pin connector of the cable into the 8.
  • Page 11 NX-700/700H INSTALLATION ■ Connection Procedure 5. External Speaker (Option) Insert the crimp terminal into the Square plug supplied 5-1. KES-3 with the KAP-2. The KES-3 is an external speaker for the 3.5-mm-diameter speaker jack. ■ Connection Procedure 1. Connect the KES-3 to the 3.5-mm-diameter speaker jack on the rear of the transceiver.
  • Page 12 NX-700/700H INSTALLATION 6. GPS Receiver Connection 3M Double coated cushion No. 4016 (or No. 4416) 6-1. Installing the GPS receiver 30 x 25 mm 1. Remove the cabinet, top packing and shielding plate of the transceiver. 2. Remove the front panel from the transceiver.
  • Page 13 NX-700/700H INSTALLATION 6-2. Installing the GPS receiver together with the VGS-1 1. Remove the cabinet, top packing and shielding plate of the transceiver. 2. Remove the front panel from the transceiver. GPS receiver 3. Attach a cushion to the bottom of the VGS-1 as shown in Figure 6-5.

  • Page 14: Disassembly For Repair

    NX-700/700H DISASSEMBLY FOR REPAIR ■ Removing the speaker hardware fi xture 1. Precautions on Disassembly (J21-8481-03) and holder (J19-5485-12) ■ TX-RX PCB (TX-RX unit A/2) Disassembly 1. Remove the speaker lead from the holder hook. ( q ) 1. Remove all screws and antenna terminals on the TX-RX 2.
  • Page 15 NX-700/700H DISASSEMBLY FOR REPAIR 2. Precautions on Reassembly ■ TX-RX PCB (TX-RX unit A/2) Reassembly 1. With the TX-RX PCB turned over, insert the flat cable from the D-sub PCB (TX-RX unit B/2) into the connector (CN600) on the TX-RX PCB.
  • Page 16 NX-700/700H DISASSEMBLY FOR REPAIR ■ D-sub cap installation procedure To improve water resistance, fi t the D-sub cap into the D-sub terminal hardware fi xture of the transceiver in the fol- lowing order: 1. Fit the left side ( q ) of the D-sub cap into the hardware fi...

  • Page 17: Circuit Description

    CIRCUIT DESCRIPTION 1. Overview 2. Frequency Confi guration NX-700/700H is a VHF Mobile transceiver designed to The receiver is a double-conversion super heterodyne operate in the frequency range of 136 to 174MHz. The unit using first intermediate frequency (IF) of 58.05MHz and consists of receiver, transmitter, phase-locked loop (PLL) second IF of 450kHz.
  • Page 18 NX-700/700H CIRCUIT DESCRIPTION 3-3. IF circuit The second IF signal is passed through the ceramic fi lter (CF201, CF202) to reject the adjacent channel signal. The The fi rst IF signal is passed through a four-pole mono- fi ltered second IF signal is amplifi ed by AGC amplifi er.
  • Page 19 NX-700/700H CIRCUIT DESCRIPTION 4-2. Base Band Circuit 4. Transmitter System The audio signal output from the base band circuit is 4-1. Audio Band Circuit converted to digital data of a sampling frequency of 48kHz. The signal from the microphone goes through the mute...
  • Page 20 NX-700/700H CIRCUIT DESCRIPTION 5-3. PLL IC (IC3) 5. PLL Frequency Synthesizer PLL IC compares the differences in phases of the VCO 5-1. VCTCXO (X1) oscillation frequency and the VCTCXO reference frequency, VCTCXO (X1) generates a reference frequency of returns the difference to the VCO CV terminal and realizes 19.2MHz for the PLL frequency synthesizer.
  • Page 21 NX-700/700H CIRCUIT DESCRIPTION 6-4. Key Detection Circuit 6. Control Circuit Keys are detected using Key scan circuit in IC911. The The control circuit consists of MCU (IC510) and its pe- /KI* and KO* signals that are normally pulled up go low ripheral circuits.
  • Page 22 The compander reduces noise by utilizing a compressor Each signaling data signal of QT, DQT, DTMF and MSK is and an expander. The NX-700/700H contains DSP (IC502) to generated by the DSP circuit, superposed on a modulation perform this operation. The NX-700/700H compander can signal and output from IC510.

  • Page 23: Components Description

    NX-700/700H COMPONENTS DESCRIPTION Display unit (X54-3640-10) TX-RX unit (X57-7380-XX) Ref. No. Part Name Description Ref. No. Part Name Description IC901 MOS-IC AFO/BLC SW MOS-IC Buffer AMP (TCXO modulation) IC902 MOS-IC AF Buffer AMP (AFO) MOS-IC Temp Sensor IC903 MOS-IC Voltage Regulator (5C)
  • Page 24 T/R SW Q209 Transistor Ripple Filter D102 Zener Diode PM Drain Baias Protection Q210 Transistor D103~105 Diode Antenna Switch (NX-700H) Q212 Transistor SW (W/N) D104,105 Diode Antenna Switch (NX-700) Q401 Transistor SW (Over DC Supply Protection) D107~109 Diode Power Det...
  • Page 25 NX-700/700H COMPONENTS DESCRIPTION Ref. No. Part Name Description Ref. No. Part Name Description D201,202 Diode CF SW (W/N) Reverse Current Prevention (OR D507 Diode RXD2) D205 Diode T/R SW D508 Diode Line Protection Variable Capaci- D207~210 Vari-Cap Tune tance Diode...

  • Page 26: Parts List

    NX-700/700H PARTS LIST CAPACITORS 2 2 0 • Capacitor value CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc. 5 = Value...
  • Page 27 Les articles non mentionnes dans le Parts No. ne sont pas fournis. Y : AAFES (Europe) X : Australia M : Oth er Areas Teile ohne Parts No. werden nicht geliefert. NX-700 (Y51-5140-10) NX-700H (Y51-5190-10) DISPLAY UNIT (X54-3640-10) Desti- Desti- Ref.
  • Page 28 RK73HB1J103J CHIP R 1/16W R949 RK73HB1J102J CHIP R 1.0K 1/16W R950 RK73HB1J473J CHIP R 1/16W TX-RX UNIT (X57-7380-XX for service) -11 : NX-700 -13 : NX-700H R952 RK73HB1J000J CHIP R 1/16W CK73HB1A104K CHIP C 0.10UF R953 RK73GB2A271J CHIP R 1/10W...
  • Page 29 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation CC73HCH1H470J CHIP C 47PF CC73HCH1H220J CHIP C 22PF CC73HCH1H180J CHIP C 18PF CK73HB1H102K CHIP C...
  • Page 30 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C178 CK73HB1H471K CHIP C 470PF C270 CK73HB1H471K CHIP C 470PF C179 CM73F2H360J CHIP C...
  • Page 31 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C426 CK73HB1E103K CHIP C 0.010UF C540 CK73HB0J105K CHIP C 1.0UF C427 CK73HB1H471K CHIP C...
  • Page 32 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C734 CK73HB1E103K CHIP C 0.010UF C922,923 CK73HB1H102K CHIP C 1000PF C735 CK73FB1E475K CHIP C 4.7UF...
  • Page 33 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation L112-115 L34-4742-05 AIR-CORE COIL RK73HB1J000J CHIP R 1/16W L116 L34-4848-05 AIR-CORE COIL RK73HB1J151J CHIP R...
  • Page 34 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R113 RK73GB2A220J CHIP R 1/10W R220 RK73HB1J473J CHIP R 1/16W R114 RK73HB1J331J CHIP R...
  • Page 35 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R303 RK73HB1J104J CHIP R 100K 1/16W R443 RK73HH1J223D CHIP R 1/16W R304 RK73HB1J222J CHIP R 2.2K...
  • Page 36 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R594 RK73HB1J102J CHIP R 1.0K 1/16W R713 RK73HB1J563J CHIP R 1/16W R595 RK73HB1J000J CHIP R...
  • Page 37 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R784 RK73HB1J154J CHIP R 150K 1/16W D19-21 HVC131 DIODE R785 RK73HB1J103J CHIP R 1/16W...
  • Page 38 NX-700/700H PARTS LIST TX-RX UNIT (X57-7380-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation IC410 XC9101D09AKR ANALOGUE IC Q413-415 DTC114EE DIGITAL TRANSISTOR IC501 Note 1 (BGA) ROM IC...

  • Page 39: Exploded View

    NX-700/700H EXPLODED VIEW : N09-2292-05 M3 x 8 : N67-3008-48 M2.6 x 6 (Br-Tap) : N87-2606-43 M2.6 x 8 (Br-Tap) : N87-2608-48 IC715 IC403 IC102 TX-RX unit A/2 (X57-) TX-RX unit B/2 (X57-) Display unit (X54-) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 40: Packing

    NX-700/700H PACKING 59 Microphone 8 Instruction manual (T91-0639-35) (B62-2000-00) 21 Fuse (Blade type)15A/32V (F52-0024-05) 44 Mic holder (J19-1584-15) 39 Packing fixture (H12-4235-05) 12 DC cord assy (E30-7523-35) 56 Screw set 51 Bracket 40 Packing fixture (N99-2039-05) (J29-0726-03) (H12-4236-05) 38 Inner carton case...

  • Page 41: Trouble Shooting

    NX-700/700H TROUBLE SHOOTING Fault diagnosis of the BGA (Ball Grid Array) IC Overview: A fl owchart for determining whether or not the transceiver can be powered on (the LCD does not function even if the power switch is turned on) due to broken BGA parts.
  • Page 42 NX-700/700H TROUBLE SHOOTING ● Checking the signal output from When a normal value is confirmed. the ASIC by software control When an abnormal value is confirmed. Points to be checked Normal voltage Remove R408. If the ASIC side is 0V, SBC R408 3.3V...
  • Page 43 Use the KPG-110SM on the NXDN Trunking System side to reprogram the NXDN ESN number. CN595 • When a new printed circuit board is used, the Kenwood ESN changes, as does the Transceiver information dis- Silk print play of the KPG-111D, but this does not have any effect on the operation of the transceiver.

  • Page 44: Adjustment

    NX-700/700H ADJUSTMENT Controls “FNC” not appears on the sub LCD display Function Display Power switch Volume Up/Down key Channel Up/Down key Microphone key [PTT] Transmit Use as the DTMF keypad. [0] to [9] If a key is pressed during and [A]...
  • Page 45 NX-700/700H ADJUSTMENT ■ Frequency and Signaling Panel Tuning Mode The transceiver has been adjusted for the frequencies ■ Preparations for tuning the transceiver shown in the following table. When required, readjust them Before attempting to tune the transceiver, connect the following the adjustment procedure to obtain the frequen- unit to a suitable power supply.
  • Page 46 NX-700/700H ADJUSTMENT ■ 5 reference level adjustments frequency Tuning point RX (MHz) TX (MHz) 136.05000 136.10000 Low’ 145.55000 145.60000 Center 155.05000 155.10000 High’ 164.55000 164.60000 High 173.95000 173.90000 ■ Adjustment item and Display Aw (Analog An (Analog Nn (NXDN Nv (NXDN...
  • Page 47 NX-700/700H ADJUSTMENT Aw (Analog An (Analog Nn (NXDN Nv (NXDN Adjusutment Main LCD Very Narrow) Adjust item Wide) Narrow) Narrow) Order Sub-LCD display item display Number Adjustment range Transmitter CWID Deviation CWID Section 14 1~1024 (RSSI measurement Receive Sensitivity 1...
  • Page 48 NX-700/700H ADJUSTMENT [■] NXDN Deviation NXDN Deviation Very Narrow NDEV NDEV Narrow ] press ] hold 5 reference level Adjustments [■] Analog MAX Deviation Analog MAX Deviation Narrow Wide ADEV ADEV ] press ] hold 5 reference level Adjustments [■]...
  • Page 49 NX-700/700H ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifi cations Frequency Range 136 to 174MHz Modulation Frequency modulation and external modulation 1. Standard Signal Generator Output –127dBm/0.1µV to greater than –20dBm/22.4mV (SSG) When performing the Frequency adjustment, the following accuracy is necessary.
  • Page 50 NX-700/700H ADJUSTMENT Radio Check Section Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 1. Frequency 1) CH-Sig: 1-1 1) Test Channel f. counter Panel Check an internal ±0.5ppm...
  • Page 51 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 5. Sensitivity 1) CH-Sig : 1-1 1) Test Channel Check 12dB SINAD or check SSG output Channel: 1...
  • Page 52 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 5. Frequency * The Frequency 1) Adj item: [PC test mode] [PC test mode] adjust adjustment can be...
  • Page 53 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 2. Low 1) Adj item: [LOLMT] 1) Adj item: [Low Trans- Power [Panel 15.0W K ±1.0W Transmit Adjust: [✳✳✳✳]...
  • Page 54 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 5. Balance 1) Adj item: [BAL] 1) Adj item: [Balance] Deviation [Panel The Deviation of 2kHz Tone deviation adjust *2 Adjust: [✳✳✳]...
  • Page 55 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment [Wide] 1) Adj item: [Aw ADEV] 1) Adj item: [Maximum Deviation [Panel Write the same 4150~4250Hz Adjust: [✳✳✳✳]...
  • Page 56 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 10. LTR 1) Adj item: [An LTR] 1) Adj item: [LTR Deviation [Panel Write the value as 0.65~0.85kHz...
  • Page 57 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment [Wide] 1) Adj item: [Aw MSK] 1) Adj item: [MSK Deviation [Panel Write the value as 2.90~3.10kHz Adjust: [✳✳✳✳]...
  • Page 58 NX-700/700H ADJUSTMENT Receiver Section Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 1. AF level [Panel test mode] 1) Test Channel [Panel Volume Up/Down 2.83V±0.3V setting 1) CH-Sig: 1-1 Channel: 1 Ext.SP...
  • Page 59 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment [NXDN 1) Adj item: [Nv RRSSI] 1) Adj item: [RSSI Ref- [Panel [Panel test mode] Adjust with the ana- Very Adjust: [✳✳✳]...
  • Page 60 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment 6. Low RSSI 1) Adj item: [An LRSSI] 1) Adj item: [Low [Panel test mode] at –118dBm Adjust: [✳✳✳]...
  • Page 61 NX-700/700H ADJUSTMENT Condition Measurement Adjustment Specifi cations / Item Test- Remarks Panel test mode PC test mode Unit Terminal Unit Parts Method equipment [Analog 1) Adj item: [Aw HRSSI] 1) Adj item: [High [Panel test mode] Wide] Adjust: [✳✳✳] RSSI (Wide)] Ext.SP...

  • Page 62: Terminal Function

    NX-700/700H TERMINAL FUNCTION Display unit (X54-3640-10) Pin No. Name Function Pin No. Name Function J901 (MIC jack) CN901 (to TX-RX unit A/2 CN597) MIC key backlight control. Speaker input. Power output of switched power supply. DC13.6V±15%, 200mA typ. Ground. Ground.
  • Page 63 NX-700/700H TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function No connection Speaker input. 5V output. Control signal output of PA function. SHIFT Control signal output of Beat-shift function Control signal output of Horn alert function. 8~11 Ground Ground.
  • Page 64 NX-700/700H TERMINAL FUNCTION Pin No. Name Function Pin No. Name Function AUXIO9 AUXIO5 AUXIO4 Refer to “D-sub 25-pin connector specifi ca- AUXIO3 tion”. AUXIO8 AUXIO2 TXD2 AUXIO1 RXD2 Refer to “D-sub 25-pin connector specifi ca- tion”. Solder Land AUXIO7 AUXIO6...
  • Page 65 NX-700/700H TERMINAL FUNCTION Rating and Condition Pin Name I/O SignalType Parameter Unit –0.3 OPT5 I/O Digital/CMOS Out/CMOS In VOH (Io=–2mA) VOL (Io=2mA) DGND AGND Input Level Vp-p OPT9 Analog Coupling Capacitor 0.01 (STON) Input Impedance kΩ Input Level Vp-p Analog...
  • Page 66 NX-700/700H TERMINAL FUNCTION Rating and Condition Pin Name I/O SignalType Parameter Unit Ouput Voltage (Iout=100mA) Power Output Current RXD2 Digital/CMOS In with Interrupt –10 Baud Rate 19200 VOH(Io=-8mA) TXD2 Digital/CMOS Out VOL(Io=8mA) Baud Rate 19200 Output Voltage (Iout=100mA) 4.65 5V_2...
  • Page 67 NX-700/700H TERMINAL FUNCTION Rating and Condition Pin No. Pin Name I/O Signal Type Parameter Unit DGND AGND Input Amplitude Vp-p Analog Coupling Capacitor Input Impedance kΩ Output Amplitude 50.0 mVp-p Analog Coupling Capacitor Allowable Load kΩ AGND Output Voltage (Iout=200mA)
  • Page 68 NX-700/700H TERMINAL FUNCTION Rating and Condition Pin No. Pin Name I/O Signal Type Parameter Unit Input Level mVp-p Analog Coupling Capacitor Input Impedance kΩ –0.3 OPT6 I/O Digital/CMOS Out/CMOS In VOH (Io=–2mA) VOL (Io=2mA) Output Voltage (Iout=100mA) Power Output Current CN595 26-pin connector specifi...
  • Page 69 NX-700/700H TERMINAL FUNCTION Pin No. Pin Name Device Connection Description/Function ANI board VGS-1 VGS Audio signal output ANI board AGND VGS-1 AGND AGND ANI board Note: POW and 5V can not be used simultaneously. VGS-1 5V power supply ANI board...
  • Page 70 NX-700/700H TERMINAL FUNCTION Rating and Condition Pin No. Pin Name Parameter Unit –0.5 AUXIO9 I/O Digital AUX input/output 9. VOH (Io=–1.5mA) VOL (Io=1.5mA) Input Voltage range (STD Deviation) Vp-p Analog Data signal input. Freq Response (STD Dev.) 20~9600Hz –3 Audio Level (STD Deviation)
  • Page 71 NX-700/700H TERMINAL FUNCTION Rating and Condition Pin No. Pin Name Parameter Unit Output Level 0.28 Vp-p Coupling Capacitor allowable Load kΩ Detected signal Analog Freq. Response (STD Dev) Wide; 20~4800Hz –6 output. Freq. Response (STD Dev) Wide; 4800-7200Hz –24 Freq. Response (STD Dev) Narrow; 20-4800Hz –15...
  • Page 72 NX-700/700H PC BOARD DISPLAY UNIT (X54-3640-10) Component side view (J79-0157-29) LEFT D929 D914 C922 R922 D935 DM/KVL HK/RXD LEFT DOWN PTT/TXD BLC/AFO DISPLAY UNIT (X54-3640-10) Foil side view (J79-0157-29) CP909 R907 IC905 R963 D904 R952 R935 C927 C948 CP917 IC901...
  • Page 73 NX-700/700H PC BOARD DISPLAY UNIT (X54-3640-10) Component side view (J79-0157-29) Ref. No. Address Ref. No. Address R988 R990 Q913 D924 R976 R989 R960 Q913 R991 C958 D908 D925 RIGHT D911 D926 D912 D927 D936 D914 D928 D915 D929 D916 D930...

  • Page 74: Tx-Rx Unit (X57-7380-Xx) (A/2)

    NX-700/700H PC BOARD TX-RX UNIT (X57-7380-XX) (A/2) -10: K -12: HK Component side view (J79-0129-29 A/2) J701 EXT. SP Q403 R401 CN705 C805 IC715 R826 D408 C820 C125 L106 C127 L401 C130 C133 C137 IC403 L402 R127 L403 R123 D404...
  • Page 75 NX-700/700H PC BOARD TX-RX UNIT (X57-7380-XX) (A/2) -10: K -12: HK Component side view (J79-0129-29 A/2) Ref. No. Address Ref. No. Address Q106 R150 Q201 Q202 C188 IC102 Q212 Q403 IC101 Q405 C182 IC102 Q406 C179 IC103 Q411 C198 IC201...
  • Page 76 NX-700/700H PC BOARD TX-RX UNIT (X57-7380-XX) (A/2) -10: K -12: HK Foil side view (J79-0129-29 A/2) Ref. No. Address Ref. No. Address Ref. No. Address IC204 11F IC401 7M L116 IC402 Q101 IC404 Q102 C186 IC405 Q203 IC408 5M Q204...
  • Page 77 NX-700/700H PC BOARD TX-RX UNIT (X57-7380-XX) (A/2) -10: K -12: HK Foil side view (J79-0129-29 A/2) C811 C810 R410 D406 Q401 D401 Q402 C475 R825 L405 C445 C801 C446 + Q404 C802 C415 D409 D407 C468 R430 Q414 C443 C804...

  • Page 78: Tx-Rx Unit (X57-7380-Xx) (B/2)

    NX-700/700H PC BOARD TX-RX UNIT (X57-7380-XX) (B/2) -10: K -12: HK Component side view (J79-0129-29 B/2) C905 C906 C904 Component side D906 Layer 1 J79-0129-29 B/2 C903 C915 Layer 2 C902 Layer 3 Layer 4 Ref. No. Address Layer 5...

  • Page 79: Interconnection Diagram

    NX-700/700H INTERCONNECTION DIAGRAM...

  • Page 80: Schematic Diagram

    NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) R : 13.57V (HK) R : 13.6V T : 13.14V T : 12.57V ∗ L401 L402 CN401 L403 (HK) IC405 R : 13.57V R : 13.6V LT1616ES6-PBF T : 13.14V T : 12.57V SHDN 5.01V...
  • Page 81 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) 4.62V EMD9 R : 4.96V T : 0.78V 470p 470p 1000p HVC131 HVC131 PLL FIN 2.03V T/R SW PLL FIN PLL FIN 2.30V T/R SW T/R SW 2SC5636 R : 0V T : 4.96V BUFFER AMP 0.76V...
  • Page 82 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) R : 3.46V D7,11,13,14 T : 0V FREQUENCY RX VCO CONTROL 2SK508NV(K52) 0.74V 470p 1SV282-F 150k 3.83V 0.5p 2SC5636 BUFFER AMP (VCO) R : 0V D8,12,15,16 T : 3.56V FREQUENCY TX VCO CONTROL...
  • Page 83 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) R : 2.15V R : 0V BUFFER AMP T : 4.23V T : 4.94V PRE-DRIVE AMP (RF) 1.12V D101 C102 R103 C104 R107 C105 C109 2SC5636 1000p 470p 470p HVC131 RF DRIVE AMP...
  • Page 84 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) ∗ IC102 ANTENNA SWITCH ∗ D103 L407CDB L112 L113 L114 L115 L104 D104 C165 R150 ∗ R124 120p L105 L407CDB R : 0V ∗ C121 R125 C135 T : 1.60V 470p POWER POWER POWER FC-H : 3.80V...
  • Page 85 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) X2_CLKIN /BER_EN 1.48V 3.31V 15M_1 33M_1 R532 100 MCDIAF R533 0 /MCCSAF DVSS7 R536 0 BCLKX1 MCSCKAF CVSS9 CVSS8 C503 DVDD5 R537 0 0.1u FSDET C518 1u CVDD5 INT3 INT3 INT2 INT1 /DINT...
  • Page 86 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) X2_CLKIN X2_CLKIN 3.31V C515 L522 VCC1 VSS1 3.31V DQ11 IC503 L501 SRAM DQ13 IC501 DQ15 FLASH ROM VSS1 VSS2 R504 100k IC504 DELAY RV5C386A 3.31V RESET (MCU) 3.31V IC505 R545 IC506 L523 TC7SH08FU-F...
  • Page 87 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) R572 22 X2_CLKIN X2_CLKIN ASQDET R720 R577 100k R569 XTALI XTALo DSPCK /RINT /HINT USRCKI ADD0 ADD1 ADD2 ADD3 ADD4 ADD5 ADD6 ADD7 ADD8 ADD9 ADD10 ADD11 ADD12 ADD13 ADD14 ADD15 ADD16 ADD17...
  • Page 88 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) X2_CLKIN X2_CLKIN ASQDET R603 3.29V DGND3 DGND2 DGND1 C547 0.1u 33M_4 DVDIo7 C548 0.1u DVDIo6 C549 0.1u DVDIo5 C550 0.1u DVDIo4 C551 0.01u DVDIo3 C552 1u DVDIo2 DVDIo1 C554 0.1u 3.31V DVDD10 C555 0.1u DVDD9 C556 0.1u...
  • Page 89 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) X2_CLKIN R915 33M-4 IC511 TC7SH08FU-F 3.31V 3.31V D503 IC508 oUTY 1SS416 SM5023CNDH-G X502 18.432MHz REVERSW C530 CURRENT (PCS RF/HD2) 0.01u PREVENTION oUTPUT (PCS RF) R594 INHN BUFFER AMP (18.432MHz) C531 0.1u BSHIFT L518...
  • Page 90 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) OPT10 3.28V BUFFER AMP (2nd IF DET) 2nd IF BUFF 3.28V C729 0.1u R : 0V 1.63V T : 1.63V IC706 TC75W51FK(F) MIC AA 1.63V C707 R716 0.1u R725 R722 1.65V R748 R753...
  • Page 91 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) OPT10 OPT10 SQ VOLTAGE CONTROL D702 R755 HSC119 R729 100k ASQ DET C722 3.28V NOISE DETECTOR (SQ) D703 R760 RB706F-40 IC705 1.5k BRF/BUFFER TC75W51FK(F) C740 AMP (SQ) 4700p C734 ASQ BPF 0.01 R707...
  • Page 92 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) OPT10 /INAMT SDO0 SCK0 /EVCS C776 1.62V C777 1000p 3.28V 1.62V Q708 2SA1832(GR)F C799 0.1u OPT10 R818 OPT10SEL R836 R821 C789 4.7u C790 10u R822 C813 10u D706 D707 1.62V EMZ6.8N EMZ6.8N LINE...
  • Page 93 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) R825 C801 C802 R828 /INAMT R662 470k Q710 R823 DTC363EU R663 470k 4.7k MUTE Q709 /INT25P DTC114EE C591 0.01u LINE PROTECTION (AID9) IC514 4.98V TC7WBD125AFK I2CCK I2CDT IC517 4.98V AIO9 EXPANDER AIO8 LEVEL SHIFT...
  • Page 94 NX-700/700H SCHEMATIC DIAGRAM TX-RX UNIT (X57-738X-XX) (A/2) IC715 LA4425A 13.54V 1.34V 6.38V CN705 R831 C810 TX-RX UNIT (X57-738X-XX) (B/2): D-SUB25 470p D901 D903 D907 D911 J701 LINE LINE LINE LINE PROTECTION PROTECTION PROTECTION PROTECTION (BER CK) (AUXIO1) (AUXIO3) (AUXIO8) EXT.SP...
  • Page 95 NX-700/700H SCHEMATIC DIAGRAM DISPLAY UNIT (X54-3640-10) R924 R925 "PF4" VOL UP R922 CN902 CH UP "PF3" VOL DOWN R923 CH DOWN "PF2" "PF1" TX-RX UNIT (X57-738X-XX) (B/2) CN597 CN901 D908,911,912 KEY MATRIX C580 100p 3.12V C581 POWER 1000p C582 1000p...
  • Page 96 NX-700/700H SCHEMATIC DIAGRAM DISPLAY UNIT (X54-3640-10) 8.00V 7.97V Q910 12A02CH TX/RX LED 7.27V BACK TX/RX LED (BUSY) LIGHT (TX) R :0V R : 5.00V D915-926 D927-936 Q905 Q906 T : 5.00V T : 0V DTC114EE DTC114EE BACK LIGHT BACK LIGHT...
  • Page 97 NX-700/700H SCHEMATIC DIAGRAM DISPLAY UNIT (X54-3640-10) CN905 -4.29V C956 0.01u 33C-2 C955 Q913 UPA672T-A R976 100p FLASH ROM IC913 29AL16D7KCCA 3.30V 3.30V /CS0 R900 VSS1 RESET /CS1 BUS BUFFER BUS BUFFER DQ10 RY/BY (A1-A2) (D0-D7) 3.30V R986 DQ11 RESET /CS3...

  • Page 98: Block Diagram

    NX-700/700H BLOCK DIAGRAM CN401 DCin F401 (13.6V) LM73CIMKX-0 F53-0328-05 CN402 I2CCK TEMP DCDC I2CDT Converter SENSOR ASSIST 33C 50C IC402 IC405 XC6204B332P1 XC6204B332P1 L77-3014-05 3.3V AVR IC408 Q405 VCTCXO TCXO_MOD BUFF BUFF 2SA1955A-F XC6204B332M 19.2MHz 3.3V AVR DC SW SCTAM1...
  • Page 99 NX-700/700H BLOCK DIAGRAM 150C Ripple Ripple 2SC5383-T111 2SC5383-T111 FILTER FILTER /T_R T/R SW SSM6L05FU ASSIST BUFF 2SJ347F LMC7101BIM5 D103 L407CDB : HK D104 L407CDB D101,205 PRE- D105 L7091CER HVC131 DRIVE FINAL DRIVE LOOP BUFF BUFF FILTER Q9,Q10 IC102 2SK508NV(K52) Q101...

  • Page 100: Level Diagram

    NX-700/700H LEVEL DIAGRAM Receiver Section Radio Frequency 58.05MHz 450kHz –121.5dBm –104dBm –118dBm –120.0dBm –109.5dBm –112.5dBm –118.0dBm –72.0dBm D213 RF AMP 1st MIX DBM IF AMP IF AMP FM SYSTEM IC D207~D210 XF202 CF203 D216~218 Q210 IC204 Q205 Q204 IC202 Buff AMP...
  • Page 101 NX-700/700H LEVEL DIAGRAM Audio Frequency –82.0dBm –82.0dBm 186mVrms 226mVrms 226mVrms 96mVrms 4.00Vrms (EVOL) IF AMP (ASIC) (RXAF SMF) (RX SUM) VOL=20 (SP AMP) IC201 IC510 IC701 IC711 IC712 IC715 J701 AF VTVM AF level obtained when the AF output level is adjusted for 4.00V/4Ω...

  • Page 102: Specifications

    Modulation ..........16K0F3E, 14K4F1D, 11K0F3E, 8K30F1E, 8K10F1E, 8K10F1D, 8K30F1D, 8K30F7W, 4K00F1E, 4K00F1D, 4K00F7W, 4K00F2D Analog measurements made per TIA/EIA 603 KENWOOD reserves the right to change specifi cations without prior notice or obligation. 2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands CA 90801-5745, U.S.A.

  • Page 103: Pc Board Display Unit (X54-3640-10)

    NX-700/700H NX-700/700H PC BOARD PC BOARD DISPLAY UNIT (X54-3640-10) Component side view (J79-0157-29) DISPLAY UNIT (X54-3640-10) Component side view (J79-0157-29) Ref. No. Address Ref. No. Address R988 R990 Q913 D924 R976 R989 R960 Q913 R991 C958 D908 D925 LEFT RIGHT...
  • Page 104 NX-700/700H NX-700/700H PC BOARD PC BOARD TX-RX UNIT (X57-7380-XX) (A/2) -10: K -12: HK TX-RX UNIT (X57-7380-XX) (A/2) -10: K -12: HK Component side view (J79-0129-29 A/2) Component side view (J79-0129-29 A/2) J701 EXT. SP Q403 R401 Ref. No. Address Ref.
  • Page 105 NX-700/700H NX-700/700H PC BOARD PC BOARD TX-RX UNIT (X57-7380-XX) (A/2) -10: K -12: HK TX-RX UNIT (X57-7380-XX) (A/2) -10: K -12: HK Foil side view (J79-0129-29 A/2) Foil side view (J79-0129-29 A/2) Ref. No. Address Ref. No. Address Ref. No. Address...
  • Page 106 NX-700/700H PC BOARD TX-RX UNIT (X57-7380-XX) (B/2) -10: K -12: HK Component side view (J79-0129-29 B/2) C905 C906 C904 Component side D906 Layer 1 J79-0129-29 B/2 C903 C915 Layer 2 C902 Layer 3 Layer 4 Ref. No. Address Layer 5...
  • Page 107 TX-RX UNIT (X57-738X-XX) (A/2) R : 13.57V (HK) R : 13.6V T : 13.14V ∗ T : 12.57V ∗ IC102 ANTENNA X2_CLKIN X2_CLKIN X2_CLKIN X2_CLKIN R572 22 X2_CLKIN X2_CLKIN X2_CLKIN X2_CLKIN L401 D7,11,13,14 FREQUENCY RX VCO R : 3.46V T : 0V BUFFER AMP (RF) T : 4.23V...
  • Page 108 150C Ripple Ripple 2SC5383-T111 FILTER FILTER 2SC5383-T111 CN401 DCin /T_R F401 (13.6V) LM73CIMKX-0 F53-0328-05 CN402 T/R SW I2CCK TEMP DCDC I2CDT Converter SENSOR SSM6L05FU ASSIST BUFF 33C 50C IC402 IC405 2SJ347F XC6204B332P1 XC6204B332P1 L77-3014-05 LMC7101BIM5 3.3V AVR D103 L407CDB : HK IC408 Q405 D104 L407CDB...
  • Page 109 Radio Frequency 58.05MHz 450kHz Audio Frequency –121.5dBm –104dBm –118dBm –120.0dBm –109.5dBm –112.5dBm –118.0dBm –72.0dBm –82.0dBm –82.0dBm 186mVrms 226mVrms 226mVrms 96mVrms 4.00Vrms (EVOL) D213 RF AMP 1st MIX DBM IF AMP IF AMP FM SYSTEM IC IF AMP VOL=20 D207~D210 XF202 CF203 (ASIC) (RXAF SMF)

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