Kenwood NX-800H Service Manual

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Page 1: Table Of Contents
UHF DIGITAL TRANSCEIVER NX-800/800H SERVICE MANUAL © 2008-4 PRINTED IN JA PAN B51-8823-00 ( 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 DISPLAY UNIT (X54-3640-10) ....72...
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-800/800H SYSTEM SET-UP Merchandise received Frequency range RF power Type 450.0~520.0MHz License and frequency allocated by FCC 450.0~520.0MHz (490~512MHz: 40W Choose the type of transceiver 512~520MHz: 35W) Are you using See page 9. KRK-10 the remote kit? (Option) Are you using See page 7.
Page 5: Realignment
NX-800/800H 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-800/800H 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-800/800H 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-800/800H 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-800/800H 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-800/800H 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-800/800H 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-800/800H 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. 3.
Page 13 NX-800/800H 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-800/800H 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-800/800H 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. 2.
Page 16 NX-800/800H 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
NX-800/800H CIRCUIT DESCRIPTION 1. Overview 2. Frequency Conﬁ guration NX-800/800H is a UHF Mobile transceiver designed to The receiver is a double-conversion super heterodyne operate in the frequency range of 450 to 520MHz. 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-800/800H 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. lithic crystal ﬁ...
Page 19 The Automatic transmission power control (APC) circuit antenna end and to stabilize transmission output at voltage stabilizers the transmitter output power at a predetermined and temperature variations. 0dBm +17dBm *D103: NX-800H only Buff AMP Drive AMP Drive AMP Drive AMP Final AMP...
Page 20 NX-800/800H 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 19.2 returns the difference to the VCO CV terminal and realizes MHz for the PLL frequency synthesizer.
Page 21 NX-800/800H 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 NX-800/800H CIRCUIT DESCRIPTION Final Amp F401 Q404 Audio Amp, Display Block SB SW PA connector F501 D_Sub 25Pin connector IC403 Internal Option Display Block D401 Q401 Q407 /OVRB TX circuit 80T SW 50MC IC405 Q412 RS-232C Driver DC/DC 50MC SW Q408 RX circuit 80R SW...
Page 23: Components Description
NX-800/800H COMPONENTS DESCRIPTION Display unit (X54-3640-10) TX-RX unit (X57-7390-XX) Ref. No. Part Name Description Ref. No. Part Name Description IC901 MOS-IC AFO/BLC SW MOS-IC Temp Sensor IC902 MOS-IC AF Buffer AMP (AFO) MOS-IC Buffer AMP (TCXO modulation) IC903 MOS-IC Voltage Regulator (5C) MOS-IC PLL IC IC904...
Page 24 T/R SW Q203 Transistor 2nd Local buffer AMP (X3) D102 Zener Diode PM Drain Baias Protection Q204,205 Transistor 1st IF AMP D103,104 Diode Antenna Switch (NX-800H) Q208 Transistor Buffer AMP (Local) D104 Diode Antenna Switch (NX-800) Q210 Transistor D106 Diode...
Page 25 NX-800/800H COMPONENTS DESCRIPTION Ref. No. Part Name Description Ref. No. Part Name Description D216 Diode Antenna Switch D509,510 Diode Reverse Current Prevention D401 Zener Diode Over DC Supply Protection D511 Diode Line Protection (RXD2) D403 Diode Reverse Current Prevention D512 Diode Line Protection (AUXIO9) D404...
Page 26: Parts List
NX-800/800H 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 101 = 100pF Multiplier 3 = Temp.
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-800 (Y51-5150-10) NX-800H (Y51-5200-10) DISPLAY UNIT (X54-3640-10) Desti- Desti- Ref. No. Ad dress Parts No.
Page 28 RK73HB1J103J CHIP R 1/16W R949 RK73HB1J102J CHIP R 1.0K 1/16W R950 RK73HB1J473J CHIP R 1/16W TX-RX UNIT (X57-7390-XX for service) -11 : NX-800 -13 : NX-800H R952 RK73HB1J000J CHIP R 1/16W CK73HB0J105K CHIP C 1.0UF R953 RK73GB2A271J CHIP R 1/10W...
Page 29 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation CK73HB1E103K CHIP C 0.010UF C83,84 CK73HB1H471K CHIP C 470PF CC73HCH1H101J CHIP C 100PF CK73HB1A104K CHIP C 0.10UF CC73HCH1H180J...
Page 30 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C188,189 CM73F2H080D CHIP C 8.0PF C288 CK73HB1H471K CHIP C 470PF C189 CM73F2H070D CHIP C 7.0PF C289 CK73GB1H104K...
Page 31 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C433 CK73GB1H104K CHIP C 0.10UF C552 CK73HB0J105K CHIP C 1.0UF C434 CK73HB1H102K CHIP C 1000PF C553 CC73HCH1H101J...
Page 32 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation C740 CK73HB1H472K CHIP C 4700PF CN516,517 E23-1278-05 TERMINAL C741 CK73HB1A154K CHIP C 0.15UF CN520 E23-1278-05 TERMINAL C742...
Page 33 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation L206 L92-0138-05 CHIP FERRITE RK73HB1J104J CHIP R 100K 1/16W L207 L40-5681-86 SMALL FIXED INDUCTOR (0.56UH) RK73HB1J100J CHIP R 1/16W...
Page 34 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R132,133 RK73HB1J104J CHIP R 100K 1/16W R245,246 RK73HB1J104J CHIP R 100K 1/16W R134 RK73HB1J224J CHIP R 220K 1/16W...
Page 35 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R402 RK73HB1J471J CHIP R 1/16W R533,534 RK73HB1J000J CHIP R 1/16W R403 RK73HH1J104D CHIP R 100K 1/16W R536,537...
Page 36 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R640 RK73HB1J103J CHIP R 1/16W R747 RK73HB1J334J CHIP R 330K 1/16W R641,642 RK73HB1J104J CHIP R 100K 1/16W R748...
Page 37 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation R817 RK73HB1J473J CHIP R 1/16W D703-705 RB706F-40 DIODE R818 RK73HB1J333J CHIP R 1/16W D706,707 EMZ6.8N ZENER DIODE R819...
Page 38 NX-800/800H PARTS LIST TX-RX UNIT (X57-7390-XX) Desti- Desti- Ref. No. Ad dress Parts No. Description Ref. No. Ad dress Parts No. Description parts nation parts nation IC714 TC75S51FE(F) MOS-IC IC715 LA4425A MOS-IC 2SC5383-T111 TRANSISTOR 2SC5636 TRANSISTOR 2SC5383-T111 TRANSISTOR Q5,6 2SK508NV(K52) SSM6L05FU-F 2SJ347F Q9,10...
Page 39: Exploded View
NX-800/800H 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. If a part reference number is listed in a box on the exploded view of the PCB (for example, ), that part does not come with IC123...
Page 40: Packing
NX-800/800H 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 (H02-0630-03) 41 Item carton case (H52-2197-02) : K...
Page 41: Trouble Shooting
NX-800/800H 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. BGA parts: ASIC (IC510), DSP (IC502), FLASH (IC501), SRAM (IC503) When the BGA IC is problematic, please bring the printed circuit board (X57-7390-XX) in for service.
Page 42 NX-800/800H 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 the ASIC/FALSH/SRAM may be broken.
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-800/800H 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] transmission, the DTMF to [D], corresponding to the key...
Page 45 NX-800/800H 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-800/800H ADJUSTMENT ■ 5 reference level adjustments frequency Tuning point RX (MHz) TX (MHz) 450.05000 450.10000 Low’ 467.55000 467.60000 Center 485.05000 485.10000 High’ 502.55000 502.60000 High 519.95000 519.90000 ■ Adjustment item and Display Aw (Analog An (Analog Nn (NXDN Nv (NXDN Adjusutment Main LCD Very Narrow) Adjust item...
Page 47 NX-800/800H 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 SENS1 value) Section 2...
Page 48 NX-800/800H 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 [■] QT Deviation QT Deviation Narrow...
Page 49 NX-800/800H ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Speciﬁ cations Frequency Range 400 to 520MHz 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-800/800H 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 0.3±0.25ppm check PTT: ON...
Page 51 NX-800/800H 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 AF VTVM EXT SP more...
Page 52 NX-800/800H 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 [Frequency] Press [Start] button “IF20”...
Page 53 NX-800/800H 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: [✳✳✳✳] mit Power Limit] meter...
Page 54 NX-800/800H 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: [✳✳✳] Deviation meter...
Page 55 NX-800/800H 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: [✳✳✳✳] Deviation (Analog meter tuning...
Page 56 NX-800/800H 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 Deviation Adjust: [✳✳✳✳]...
Page 57 NX-800/800H 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: [✳✳✳✳] Deviation (Wide)] meter...
Page 58 NX-800/800H 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 tuning...
Page 59 NX-800/800H 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: [✳✳✳] erence (Very Narrow)]...
Page 60 NX-800/800H 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: [✳✳✳] RSSI (Narrow)] Ext.SP...
Page 61 NX-800/800H 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 After input signal 2) Adj item:...
Page 62: Terminal Function
NX-800/800H 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. 8V input.
Page 63 NX-800/800H 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. /PRST Display MCU reset signal output CN403...
Page 64 NX-800/800H 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 Name Description to GPS receiver...
Page 65 NX-800/800H 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 Coupling Capacitor Input Impedance kΩ...
Page 66 NX-800/800H 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 Power Output Current Output Voltage (Iout=100mA)
Page 67 NX-800/800H 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) Power Output Current Input Level...
Page 68 NX-800/800H 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-800/800H 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 Sidetone Side tone signal input OPT9...
Page 70 NX-800/800H 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) mVrms Analog Allowable Freq...
Page 71 NX-800/800H 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 –0.5 AUXIO5...
Page 72: Display Unit (X54-3640-10)
NX-800/800H 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 R902 C957 BLC/AFO...
Page 73 NX-800/800H 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 D917 D931 D918...
Page 74: Tx-Rx Unit (X57-7390-Xx) (A/2)
NX-800/800H PC BOARD TX-RX UNIT (X57-7390-XX) (A/2) -10: K -12: HK Component side view (J79-0130-29 A/2) J701 EXT. SP Q403 R401 CN705 C805 IC715 R826 D408 C820 C132 L106 C131 L401 C128 C123 IC403 L402 R129 L403 R125 D404 C422 C421 F401 C419...
Page 75 NX-800/800H PC BOARD TX-RX UNIT (X57-7390-XX) (A/2) -10: K -12: HK Component side view (J79-0130-29 A/2) Ref. No. Address Ref. No. Address Q201 R152 Q202 Q212 IC102 C183 C190 Q403 Q405 IC101 Q406 C189 IC102 Q411 C177 IC103 Q501 IC201 Q709 C174 IC202...
Page 76 NX-800/800H PC BOARD TX-RX UNIT (X57-7390-XX) (A/2) -10: K -12: HK Foil side view (J79-0130-29 A/2) Ref. No. Address Ref. No. Address Ref. No. Address IC204 11F IC401 7M IC402 L115 IC404 IC405 Q101 IC408 5M Q102 C179 IC409 Q203 D101 IC410 12J Q204...
Page 77 NX-800/800H PC BOARD TX-RX UNIT (X57-7390-XX) (A/2) -10: K -12: HK Foil side view (J79-0130-29 A/2) C811 C810 R410 D406 D401 Q401 Q402 C475 R825 C445 L405 C801 C446 Q404 C802 C415 D409 D407 C468 R430 Q414 C443 C804 C454 IC405 Q413 C803...
Page 78: Tx-Rx Unit (X57-7390-Xx) (B/2)
NX-800/800H PC BOARD TX-RX UNIT (X57-7390-XX) (B/2) -10: K -12: HK Component side view (J79-0130-29 B/2) C905 C906 C904 Component side D906 Layer 1 J79-0130-29 B/2 C903 C915 Layer 2 C902 Layer 3 Layer 4 Ref. No. Address Layer 5 Layer 6 D905 CN901...
Page 79: Interconnection Diagram
NX-800/800H INTERCONNECTION DIAGRAM...
Page 80: Schematic Diagram
NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-XX) (A/2) R : 13.57V (HK) R : 13.6V T : 13.09V T : 13.84V ∗ L401 L402 CN401 L403 IC405 (HK) LT1616ES6-PBF R : 13.57V R : 13.6V T : 13.07V T : 12.84V SHDN 5.01V L404...
Page 81 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-XX) (A/2) 4.95V 1.44V 0.92V 2SC5636 BUFFER AMP (PLL FIN) BYPASS DIODE DA221 FC-R : 7.08V RIPPLE FC-T : 6.61V LMC7101BIM5 FILTER OUTPUT 14.34V 13.72V 2SC5383-T111 14.30V INPUT+ INPUT- 470k BUFFER AMP (VCO TUNE) VCO TUNE 3.29V TEMP SENSOR...
Page 82 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-XX) (A/2) R : 3.21V T : 0V D3,7,9,10 220n FREQUENCY 0.74V RX VCO CONTROL 150k 150p 0.5p 1SV282-F 2SK508NV(K52) 3.94V 2SC5636 BUFFER AMP (VCO) R : 0V T : 3.47V R153 D4,8,11,12 180n FREQUENCY TX VCO CONTROL 17.5n...
Page 83 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-XX) (A/2) BUFFER AMP R : 2.14V R : 0V (RF) T : 4.26V T : 4.94V PRE-DRIVE AMP 2SC5636 1.79V D101 R158 R160 C101 R103 C104 R106 C105 C109 1000p 100p 100p HVC131 RF DRIVE AMP Q101 C118 2SC5108(Y)F...
Page 84 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-XX) (A/2) ∗ IC102 ANTENNA SWITCH ∗ D103 L407CDB L112 L113 L114 D104 1.5T 1.5T 1.5T R126 C186 R152 120p L407CDB R116 R121 R127 C136 470p R : 0V FC-H : 3.77V T : 1.59V FC-L : 3.34V (HK) FC-H : 3.71V...
Page 85 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 INT0 /SYMTIM /DWUP...
Page 86 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 TC7SH08FU-F 33BU XC6109C29ANN 32KOUT 3.31V...
Page 87 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 ADD18 ADD19 ADD20...
Page 88 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 DVDD8...
Page 89 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 33GPS LINE PROTECTION...
Page 90 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 C742 R766 C748...
Page 91 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 Q702 C716 2SC4617(Q)
Page 92 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 LINE VREF PROTECTION...
Page 93 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-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 AIO7 (I2CCK/I2CDT) R664 100k...
Page 94 NX-800/800H SCHEMATIC DIAGRAM TX-RX UNIT (X57-739X-XX) (A/2) IC715 LA4425A 13.54V 1.34V 6.38V CN705 R831 C810 TX-RX UNIT (X57-739X-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 D902 D904 D908...
Page 95 NX-800/800H 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 (X57-739X-XX) (A/2) CN597 CN901 D908,911,912 KEY MATRIX C580 100p 3.12V C581 POWER 1000p C582 1000p C583 R630 1000p...
Page 96 NX-800/800H 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 Q908 DTC114EE R :0V...
Page 97 NX-800/800H 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 C962 L907 DQ12...
Page 98: Block Diagram
NX-800/800H 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 L77-3016-05 3.3V AVR IC408 Q405 VCTCXO TCXO_MOD BUFF BUFF 2SA1955A-F XC6204B332M 19.2MHz 3.3V AVR DC SW SCTAM1 Q416 2SK1215-E(E) LMC7101BIM5...
Page 99 NX-800/800H 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- D106 L7091CER HVC131 DRIVE FINAL DRIVE LOOP BUFF BUFF FILTER Q5,Q6 IC102 2SK508NV(K52) Q101 Q102 RA30H4452M123 : K 2SC5108(Y)F...
Page 100: Level Diagram
NX-800/800H LEVEL DIAGRAM Receiver Section Radio Frequency 58.05MHz 450kHz –121.5dBm –104dBm –118dBm –120.5dBm –114.5dBm –112.5dBm –118.0dBm –72.0dBm RF AMP 1st MIX DBM IF AMP IF AMP FM SYSTEM IC D212,D213 D207~D210 XF202 CF203 Q210 IC204 Q205 Q204 IC202 Buff AMP Buff AMP Buff AMP Q208...
Page 101: Level Diagram
NX-800/800H 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 with the front panel AF VOL control.
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-800/800H NX-800/800H 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 D911 D926 D912...
Page 104 NX-800/800H NX-800/800H PC BOARD PC BOARD TX-RX UNIT (X57-7390-XX) (A/2) -10: K -12: HK TX-RX UNIT (X57-7390-XX) (A/2) -10: K -12: HK Component side view (J79-0130-29 A/2) Component side view (J79-0130-29 A/2) J701 EXT. SP Q403 R401 Ref. No. Address Ref.
Page 105 NX-800/800H NX-800/800H PC BOARD PC BOARD TX-RX UNIT (X57-7390-XX) (A/2) -10: K -12: HK TX-RX UNIT (X57-7390-XX) (A/2) -10: K -12: HK Foil side view (J79-0130-29 A/2) Foil side view (J79-0130-29 A/2) Ref. No. Address Ref. No. Address Ref. No. Address IC204 11F IC401 7M C811...
Page 106 NX-800/800H PC BOARD TX-RX UNIT (X57-7390-XX) (B/2) -10: K -12: HK Component side view (J79-0130-29 B/2) C905 C906 C904 Component side D906 Layer 1 J79-0130-29 B/2 C903 C915 Layer 2 C902 Layer 3 Layer 4 Ref. No. Address Layer 5 Layer 6 D905 CN901...
Page 107 TX-RX UNIT (X57-739X-XX) (A/2) R : 13.57V (HK) R : 13.6V ∗ IC102 T : 13.09V ∗ L401 T : 13.84V T : 0V R : 3.21V BUFFER AMP (RF) R : 2.14V R : 0V ANTENNA SWITCH X2_CLKIN X2_CLKIN X2_CLKIN X2_CLKIN R572 22...
Page 108 150C Ripple Ripple FILTER 2SC5383-T111 FILTER 2SC5383-T111 CN401 DCin /T_R F401 (13.6V) LM73CIMKX-0 F53-0328-05 CN402 T/R SW I2CCK TEMP DCDC Converter I2CDT SENSOR SSM6L05FU ASSIST BUFF 33C 50C IC402 IC405 2SJ347F XC6204B332P1 XC6204B332P1 L77-3016-05 LMC7101BIM5 3.3V AVR D103 L407CDB : HK IC408 Q405 D104 L407CDB...
Page 109 Radio Frequency 58.05MHz 450kHz Audio Frequency –121.5dBm –104dBm –118dBm –120.5dBm –114.5dBm –112.5dBm –118.0dBm –72.0dBm –82.0dBm –82.0dBm 186mVrms 226mVrms 226mVrms 96mVrms 4.00Vrms (EVOL) RF AMP 1st MIX DBM IF AMP IF AMP FM SYSTEM IC IF AMP VOL=20 D212,D213 D207~D210 XF202 CF203 (ASIC) (RXAF SMF)

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