NX-820H(G)/820H
Contents
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5. A ER Le ido ters E NENNT 555 ECRIRE 1 i Q4 25 5383 111 33M 014 DA2S101 501 177 3015 05 50 5 SM5023CNDH G Q9 SSM3J 15FS 400 470 2 2 VCTCXO la 33M TX 450 520MH
6. 1701 1501 11 1 13 14 15 102 CN804 1 2 3 4 5 E o 2 Igi H BI Lao6 1818 CN720 R821 OLE po Ren nes x 5 R835 R637 6674 rea MEET ness 2660 8639 2 614 Oensoa C645 A801 Q504 e 2633 B m 2208 EG S c125 5 2222 1108 PTT H E X N pig C136 Ici L109 zime 20 xs ror R839 5 la
7. R69 le 8F 126 B 127 4 3 m ESI 2 Bis 507 8 B ess BAB Res E Ble E 8 E o er fal IU 9102 0114 8 En de B 2 B Q106 D204 9D caa Lees 556 7 Eaa RSL al Q201 D206 9D mm o B a Exo JE mI aa I 3 8 8 258 Ras E 9 B aB 8 E 8 8501 0202 0401 60 7384 8 IC406 3 ES 0303 10K D403 6 BE He En I 9M us i R73 2 2248 1213 7 C563 123 C559
8. ee 1 2 E Ea 10516 3 2 5 amp 9 16 5116 EA 0438 kal AR x I DEL E AE GER Bl S 29 SI 621 1 8 I pum Das 8522 554 623 10513 B n Fy LT 4 5 51 i c a mu BEE 5 5 a 2 LIL 8 m SF 4 3 BH 8 5 8 5 18 3 fenes HB It gsls ee x 13 5228 5 542 15 TT ICN503 vc 0403 Ec 0405 om 5 E537 os gl ER 2 8 Ex EIE 1 1 CN502 524
9. ISTE X57 824X XX cies cisa cie7 RI R2 LCD X57 824X XX 12 50 654 59 61 ces ce7 ces coo 208 212 214 218 220 221 222 224 225 226 2301 231 232 111 13 L 121 124 12041205 L206 L207 208208 211214 855 857 82 885 R86 890 TH2 57 824 24 129 135 137 142 144 145 148 149 150 175 179 180 254 255 256 C263 290 292 296 0102 1210 1213 1215 1228 102 103 104 919011 60 No 7p No DI 24 X57 824X XX RIBI X57 823X XX A801 CN801 809 814 815 16 820 821 822 823 824 825 C826 0801 0802 1801 Lso2 Lsos
10. CN804 1 2 4 S 579 1806 esta CN720 R643 5 amp R637 R638 Ese 2 Oeneos 0601 801 533 5 5 2208 111117 8 824 CN423 2 C136 B ea eo R839 125 E fres 2 z D801 JE B 11117 S 2 CN801 C821 8843 0802 cel c 5 E HE 5 Jonata te 5 5 5 5 5 5 5 5 amp CN112 0417 CN411 1 0432 ello Ro os 8 47 Ress Rebz Resa mese 16402 2 2417 CN419 d 5 1 5 2 0 o 9 9 4 2 778 EL fot CN542 CN541 7 749 B 8751 756 ar alg 5m 81 436 735 77 1813 8730 0728
11. B Q4 9 0105 6E Ds 2 BL 10H D106 6E p Q6 10 0107 8E C197 168 a EIE g C108 0110 9 5108 10 E R D16 D17 2 10112 a 10113 265 8202 g CA 120 C 5 0107 0114 251 127 C175 5 5 EE Be 2 519 S ES F2 83 wj EG H E258 0255 9e RES CET 1 5 B g BB 25115 Im s pu B ES ME EIE 8 E EZ 5521 5 C58 548 2258 zl E 5 Sac ES E58 215 E 073 uz 5 le 3i m 8 e 5 210 6723 CES 56 ego r ps cles 15 205 E nis LAS eus E Bi gr 8 81 O n ie is syl S 3 BB m 84 I5 8 ERE 1401 E36 en
12. D11 21 24 LCD LCD BACKLIGHT Dii 015 019 2 Z R34 Dt Dt Dt 270 012 016 020 207 1 2 E R35 b Dt b 270 013 017 021 R36 R29 b b b 270 220 014 018 024 2 2 R37 R28 4 p 4 4 270 120 30 2337 05 98 5 7 KTC4075E Y GR osx LCD BACKLIGHT 22 SWITCH 05 9 KEY BACKLIGHT 1 377V KEY BACKLIGHT 05 D8 9 72 824 5 0V K K INT SP B30 2337 05 30 2337 05 3 3k a Q9 1 ars 0517 epe 12 93 06 9 ES R25 EIS 8 Kt B30 2337 05 30 2337 05 3 3k KTC4075E Y GR R42 1 897 507 R26 i HOOK 4 96V Kt 4 PTT 4 62V SB 13 53V KEY BACKLIGHT 1 B30 2337 05 4 7 1 Tom 554 SWITCH CONTROL DM lt N HOOK 4 46 X 1 j 01 ae m SURGE VOLTAGE SB PROTECTION PROTECTION MBL R12 5 0V 100 al talet sls cso Eee 878 9 I 4 DA3S101F 4 EXE gt rad S OTS in SB I N
13. X501 i L77 3015 05 8 5023 0 33M i 18 432MHz 8 DSP PSCK DSP IC2 33M 33M PLL MOD 33A 15M 33M SKY72310 362 i 1 10501 10503 X 506 L 5 16 8MHz DSP 33 i Flash 16502 M 15M ROM SRAM PLD PLL 5001 gt PLL MOD 4 DRST HDS2 HRDY 3546 SYMTIM DINT FSDET ipcs_psp 10506 0 HINT DWUP PCS_RF IPCS MCDIAF MCSCKAF MCCSAF SOK GN P MCDOAF MCDICN MCCSXCN E 58 HOST RDY DSP ST MCSCKCN i 8 8 k soc PSCK DSP 28 R A0 20 D0 15 WR RD dios ES ICS0 CS2 CS3 280 E 8 10504 BD5329FVE RESET 33M RLED GLED IF DET 500 jeg11 74 244 33A 2 LCDCL LCDCE LCDDI SCKO LCDCS SDDO 10304 LLL RSS BU7445HFV LCDDO SDIO gt BUCNT2 38M 0509 2 2 10716 2 2 HOOK_RXD1 gt gt aPsc TC7WHi26FU F TC7WH126FU F uka BUCNT1 MKEYO GPS ALM HOOK RXD1 500 gt 1 509 1 2 lor aa D512 iey 10509 jer TC7WH126FU F TXD1 0825310 gt 0511 0513 LETT
14. 820H PC BOARD PC BOARD NX 820H G 820 DISPLAY UNIT X54 3830 10 Component side view J 79 0345 09 DISPLAY UNIT X54 3830 10 side view 79 0345 09 1 2 ps 40 3 4 5 6 Component side Layer 1 Layer 2 Foil side 7 8 Address 9 10 11 Component side Layer 1 12 Layer 2 Foil side 13 14 H K L M N 5 NX 820H G 820H PC BOARD PC BOARD NX 820H G 820H TX RX UNIT 57 8240 1 TX RX UNIT 57 8240 1 Component side view J 79 0344 09 v Component side view J 79 0344 09
15. 12 2 SA mm ela EIS 153 BE 187 EST 0105 E 8 8 5 1105 EIS 26 C22 Ra w LE Ed pj C81 bs TE cg Rag 1 pars 7 12 C25 TTTTTT wu ES 92 0204 S 253 029 R28 R25 2 32 mz m ci CN220 C34 B 9 22 ES R84 E27 Rei R12 ane z 304 6559 E ez CN303 12307 E38 550 537 2 0545 8 Ez 8 CN304 B 333 8 pu 9 a 2 0225 E333 H C338 C336 8344 8343 2328 5 8 Ditt Bs C177 2208 0819 P X 820H 8912 291
16. C306 Bre 121 CNI5 L E 41 E3og C313 n B RaT E H Rss C580 Ga 509 553 557 R532 CP503 G 8 C527 Ga CSI C515 C528 5 2 8 6203 ag SI EI C59 C56 8 E TET gi R55 rm 70
17. B BUS B BUS R561 Dual BUS Buffer 262 815 iu 16801 lt SI 9 9 TO7WH126FU F ol gt 2 E 5 ME oii 25 C622 0 01u 10512 els o olen 8 18 ga
18. ES Component side E NIE H Layer 1 B Ea 31 2 3 Layer 4 5 6 Foil side 64 ot N s Pc BOARD NX 820H G 820H TX RX UNIT X57 8240 1X v Foil side view J79 0344 09 8661 8657 9503 1 811 C805 D705 D706 1 JARRE 2 R822 6 18 18 18 5 5 a eB EI 273 C788 E 8 5 1 8 d a 0403 0401 5 4 8 ls 5 8 2 10 PITT H HE 8 C490 1404 R188 L106 C629 8184 cma 0440 6704 m 0102 CI Brig 627 S 1405 5406 elle gt 2 0803 ETA 8104 RTT R18 0124 0129
19. ANT Tx RX 450 2 151 MIX SP ANT SW AMP AN gt IF AMP 5 gt AMP I 4 49 95MHz 16 8 2 TEXO 50 4MHz 9 8 PLL MIC TX AMP 400 470MHz K2 450 520 2 350 05 420 05MHz K2 400 05 470 05MHz K 3 Receiver System 3 1 RF circuit An incoming RF signal from the antenna terminal is passed through the antenna switch D110 111 and 107 and then the bandpass filter L215 216 and 210 The bandpass filter is adjusted by a variable capacitor The input voltage to the variable capacitor is regulated by the voltage output from the D A converter 712 The signal is amplified by an RF amplifier 0202 and passed through the bandpass filter 1207 208 209 and 211 The resulting signal is applied to the first mixer Q201 where it is mixed with the first local oscillator signal output from the frequency synthesizer to produce the first IF 49 95MHz 3 2 IF circuit The first IF signal is passed through four pole mono lithic crystal filter XF1 to reject the adjacent channel signal The filtered first IF signal is amplified by the first IF amplifier 0305 and then applied to the IF system IC303 IF system IC provides second mixer amplifier and RSSI Received Signal Strength Indicator
20. NX 820H G 820H TX RX UNIT X57 8240 XX Address Parts No Description PARTS LIST Desti nation Address Parts No Description Desti nation 28 DZ2J056 M RKP351KW 1P2 RB5208M 30 L407CDB RN142S 1SV278F DZ2J180 M 5205 30 0426101 0825310 0822306 5205 30 0825310 22ZR 10D DSA3A1 0825310 0825310 2850 08253 0825310 DA2S101 155422 DA3S101F EMZ6 8N RN1428 TA7808F NQ 5 72310 362 BD7542FVM RA60H40471101 RA60H44521101 NJM12904RB1 BD7542FVM TC7SHO8FU F TK10931VTL G BU7445HFV XC6209B332M G XC6118C23CMR XC6209B502P G LT1616ES6 PBF XC6209B332M G NJM2878F4 33 XC6205B152P G NJM2878F4 33 Note1 BGA Note1 BGA Note1 BGA BD5329FVE SM5023CNDH G Note1 BGA TC7SHO8FU F TC7WH126FU F TC74VHCT244AFK TC7WBD125AFK TC7WT126FU F TC7WH126FU F 9535 5 ADM202EARNZ BU7462NUX BU7242NUX BU7462NUX ZENER DIODE DIODE DIODE DIODE DIODE ARIABLE CAPACITANGE DIODE ENER DIODE ODE ODE ODE DE DE DE RGE ABSORBER DE DE DE DE DE DE DE DE DE ER DIODE DE ANALOGUE IC MOS IC MOS IC POWER MODULE POWER MODULE MOS IC MOS IC MOS IC ANALOGUE IC MOS IC MOS IC MOS IC MOS IC ANALOGUE IC MOS IC BI POLAR IC MOS ASIC SRAM MOS MOS MOS MOS MOS MOS MOS MOS HGK HGK2 BU7242NUX BU74
21. CAUTION SURFACE USE AVOID CONTACT DURING S NO BXXXXXXX HII IIIIIIII IAI IZI NXXXXXXXXXXXX Place the separated KENWOOD ESN NXDN ESN MPT ESN label on top of the original label NX 820H G 820H ADJUSTMENT Controls Key operation not appears on the LCD display Function Display Power Volume Channel Test channel up down Channel No switch Up Down key LCD Up Down key Push Squelch level up Hold Squelch off Squelch level Squelch off icon appears Wide Narrow Very narrow Wide W Narrow N Very narrow V Shift to panel tuning mode appears on the LCD A Function on display lt B MSK 1200bps and 2400bps 2400bps M icon appears Modular Programmable function keys Push Test signaling up KMC 36 OPTION PTT Preparations for checking tuning the transceiver Before attempting to check tune the transceiver connect the unit to a suitable power supply Whenever the transmitter is turned on the unit must be connected to a suitable dummy load i e power meter The speaker output connector must be terminate
22. 2201 33n 33n 330 221 33 180 180 NO 57 8240 1 1 1 FIN 5 RX VCO RX VCO Assist Tune Gi Frequency Control R40 0 4 8 010 s 85 28C5108 Y F ats 5 SS K20 5 R61 Dis m 547 x RKS151KJ 164 5 zi x D16 17 2 z 8 Switch 8 836 140 2 o 0 9 8 TXVCO Q6 E Ass Frequency Control MCH3914 8 H Assist Tune 835 8 0 2 5 tS 22 58 5 u _ i i ae 22418 on 5 z 158 58 55 ACT 2 2 8 e R34 L41 FM Modulati 4 Switch 0 9 SSM3J15FS Sox 8 228 exR90 TH2 Q4 25 5383 111 m p CO_MOD Vi 5005 B BUS SideA B BUS
23. 90581 0 01 1 HOOK RXD1 0511 0828310 8 8 cou 651 R684 0 10 47 Dual BUS Buffer HOOK MKEY 2 Reverse Current Prevention 509 TC7WH126FU F D502 R615 0825310 4 7 613 10k R171 ANT 9 5T 1 4 3 w R612 ik 76 X57 824 10 10 SB SB SP SP SP SP BLC MBL RLED GLED BLED GND GND GND EMG GND NC 50C LCDDI LCDCE LCDCL LCDDO GND GND MIC ME HOOK LIE IE PS 222600050 scHEMATIC DIAGRAM NX 820H G 820H DISPLAY UNIT X54 3830 10
24. CC73HCH1H221 220 353 1768 04 PACKING SMA HGK HGK2 E29 1231 15 INTER CONNECTOR LCD G53 1819 21 PACKING CHASSIS E40 6924 05 FLAT CABLE CONNECTOR 30P G53 1820 03 PACKING PANEL E58 0535 05 MODULAR G53 1858 03 PACKING SP J21 8629 03 MOUNTING HARDWARE LCD H12 4345 12 PACKING FIXTURE 12 4346 12 PACKING FIXTURE 192 0138 05 52 2568 02 192 0140 05 P FERRITE J19 1584 15 HOLDER MIC ACCESSORY RK74HB1J101J P COM 100 J19 5542 02 HOLDER PANEL RK73HB1J101J PR 10 J29 0726 03 BRACKET ACCESSORY RK73HB1J103J PR 10K RK73HB1J102J PR 10K K29 9479 01 KEY TOP RK73HB1J000J PR 0 N30 2605 48 PAN HEAD MACHINE SCREW SMA HGK HGK2 RKT3HB1J000J PR 0 RK73HB1J101J PR N67 3008 48 PAN HEAD SEMS SCREW RK73HB1J122J PR N87 2608 48 BRAZIER HEAD TAPTITE SCREW RK73HB1J000J PR N99 2039 05 SCREW SET ACCESSORY RK73HB1J000J PR T07 0785 15 SPEAKER RK73GB2A331J PR T91 0639 55 MICROPHONE KMC 35 ACCESSORY RK73GB2A221J PR RK73HB1J000J PR RK73HB1J000J PR RK73HB1J473J PR 57 8240 14 TX RX UNIT FOR SERVICE 57 8240 15 TX RX UNIT FOR SERVICE 57 8240 16 TX RX UNIT FOR SERVICE RK73HB1J332J PR RK73HB1J472J PR RK73FB2B121J PR RK73FB2B221J PR RK73GB2A271J PR 57 8240 17 TX RX UNIT FOR SERVICE NX 820H G 820H PARTS LIST DISPLAY UNIT X54 3830 10 TX
25. 88 nal 8 002300 PEL SS mas age Fm ab el R230 2 1 I SES 558 Q405 we eie ciego EE AM Ta a 239222229 Ses PLD ve 5 630 Raze TC WT126FU F 2148 ceo2 10005 NITE soc ela 9418 858 LTCOMEEBFS8 A See eee eee eee eee eee eee eee eee ee AAA Em 5 valt e 2 ien m sj e 5 2 9 258 2 76 2543585 2 S 2 9 lt ais 51 8685 EET SSIS ST SST SETS Sel Teele ol 515 olor a al a al FEIFJF3EGIFIEI 31 Dual BUS BufferlFNC3 FUNCT 16 Dosen 0 1 4 813618 2 416514 ely sls mis MKEYO w ere 19 LCDDI E LCD DRIVER ole EIS 0412 555 8 8 Bu B ADS D 55 38515121 uc 8 B AGCAMPo 542213 1522 825 2548 age a in 5 C603 11 100p SES 1 DC Switch 91 zo v 5 2 s s sas 5 772 R776 R783 12513 Hom Alert 4 6 335 0 1 BU7
26. z 2 556 2 glalglelels 2 22 2 8 5 s 8 730 GPSDET V 2 55555 51025 85 L z B TS g L sl St 813 a ST T 555 EE 51 21515 15125151 155 23212122 02122021 08282012 521 15 02 2 vpn uu sena ati L d Mie als MA cod lea who 3995 8 8 slegls 1 E 2 E D SLET 288 UI Dis x x 3 3 1 IHE sas HINT GPSDET All DVDIo5 2 4 0709 gt E 5 cu 5 5 9 e S56sro Sas ons di mka els 512 RB les 5 CN503 USRCKI EET T 8 7 SSM6N37FE Sie Bie 26 OTS 1 05510 3 2337 05 30 2337 05 3 3k 33 01141112 8 52 22028 6 SSR 5555554 Ss 2 Pe P o PPE Ato Ha opo DVDlo4 gt gt 2 ISDA 101 1 l s GPS Module l M TXVCO TX VCO Q6 C69 OFS ors wee 5 YT TTT STS 5 INT SP PST SSL SSE DEC 887018 ovoros 589 001 4 mf 21 TO Expander n 8 Frequency Control McH39149 4 SEE z st ETT els Sls 1 3277 MRG 4 98V CN421 DU Li 5 rer hu ops I voo
27. os 16 ay See ALI Eee E al 8425 3 s cvoo 10 Rean PSRRF fr mE BAF Buffer AMP SO KTE407SE V GR ESS RES i R 26 100p f L204 1205 Tie Beg EIS 5 0220 LEDE eas 100p T 5W 13 0V ss 55 2 sf Be PA PSRIF pu C705 BW Switch cz16 100 at 342545 aL 8 8 ela an RB5205M 30 4 E 2 1 3 S C505 su 53 aff 029 cue PSRPLL aL it qM 7 55 Li 1 225 5 7 SE 205 0108109 E 4 LEDE op 7 026 RIS 100p I whe n e 2 DT iS KMOL 55 4 gt n oU Nm ande mom e SEL TENA 25 Al RSSIT JDWUP RBS R720 Nex wart F501 0 022u sB 211 213 2 Over DC Supply Protection 17 3 3934934 3353988588 0 00 a a aaa a a sant 228 BUG 1 cHe 59 sla 8 8 227 100 4 8 MBL 9 R K 10u JDINT k mud W210 0 210 306 R315 ATN N m ces 888888888888888888 E gt seni Thu 28 28 1 314238 it it 8 8 E md OL uu els
28. 1 AVRET csi XVCO AssistTune C71 117 6p 3 z u 31 BEN nds R418 A 2 2031 21 o2 HQ 2 Rg 2 22pxy 3585 og Soc 1 1 Sig 2 ret aav 1 IK 1 8 el els ask 7 d 3 SP ors P T 55 R410 s vour 5 2021 Gpio2 ABI E m m modu 8702 48709 2 8 gt 2 Mic SUM AMP 5 5 Tani SRI lo t t pem 6842 48843 EUH NJ M2878F4 33 10u D8 5 18 zia nme gie she 58 5 12 93 R25 1 VoUT VIN 3 vss LPF 0708 4 2341 100 7 1 9 1 15v282 F I 48 dea 2 s E ia 2 4 s 37 p alls 9499 2 5101012 ae perm 2 T 1000 1006 7foe LTCO14EEBFS8 JNTISP 1 29 o 2 4 55 els OT aos Sto se rim 2 SP SAS K 2 5 asl Dvopa UE CSI 1234 ioeeccsca 518518 5 1 5 s s ale ala Bice 8 3437 05 636233705 3 36 vss D405 apis 3 728323 1 2191 110 GPlo4 1 0 apos NS C574 BIS vix La 6 9 2 1
29. 5 reference level Adjustments Al 5 reference level Adjustments ng om je Fast Ep RSSI High RSSI High Very LRSS 5 reference level Adjustments HRSS a 5 reference level Adjustments 5 reference level Adjustments 41 NX 820H G 820H ADJUSTMENT Test Equipment Test Equipment Required for Alignment Major Specifications Standard Signal Generator SSG Frequency Range Modulation Output 100 to 520 2 Frequency modulation and external modulation 127dBm 0 1uV to greater than 20dBm 22 4AmV When performing the Frequency adjustment the following accuracy is necessary 0 001ppm Use a standard oscillator for adjustments if necessary Input Impedance 500 Operation Frequency 100 to 520MHz Measurement Capability Vicinity of 100W 100 to 520MHz 10mV to 20V DC High input impedance for minimum circuit loading DC through 30MHz 10Hz to 1000MHz 0 01ppm or less Power Meter Deviation Meter Frequency Range Measuring Range Digital Volt Meter DVM Input Impedance 5 Oscilloscope High Sensitivity Frequency Counter Frequency Range Frequency Stability 20A or more 50Hz to 10kHz Ammeter Frequency Range Voltage Range 1mV to 10V Frequency Range 50Hz to 5kHz or more Output 0 to 1V Capability 396 or less at 1kHz Input Level 50mV to 10Vrms Approx 4 10W 13 6V approx 20A adiustable from 9V
30. PTT PC serial data MKEY MIC data detection POWER Detection output of power switch J1 MIC jack MIC backlight control Battery voltage DC supply Ground PTT PC serial data from radio MIC ground MIC signal input PC serial data to radio MIC data detection TX RX unit 57 8240 1 I O Function CN514 to Disply unit CN1 SB Battery voltage DC supply SB Battery voltage DC supply SP Speaker output SP Speaker output SP Speaker output SP Speaker output BLC LCD backlight control signal output MBL MIC backlight control signal output N RLED Red LED control signal output GLED Green LED control signal output BLED O O O O O O Blue LED control signal output GND Ground GND Ground GND Ground EMG Emergency key detection GND Ground NC No connection 50C 5V DC power supply LCDDI LCD data output LCDCE LCD enable output LCDCL LCD clock output LCDDO LCD data input GND Ground GND Ground MIC MIC signal input ME MIC ground HOOK RXD serial data PTT TXD PTT PC serial data MKEY MIC data detection POWER Detection input of power switc
31. Deviation Analog meter ing mode 465 Reference Narrow Deviation meter Narrow Oscillo ALNA value LPF 3kHz Deviation meter scope LPF 3kHz PC test Press lt B key HPF OFF mode PTT Press Transmit 144 1 1 0 019 button Press Apply adjustment value button to store the adjustment value Wide 1 item LTR 1 item LTR Write the value 1 00kHz 0 05kHz Adjust Deviation Analog 465 Reference PTT ON Wide value Press lt B key PTT Press Transmit to store the button Press Apply adjustment value button to store the adjustment value 9 DTMF Devia Adj item 1 Adj item DTMF Deviation ANT Panel tun Write the value 1 5kHzx0 05kHz tion adjust DTMF Deviation Analog meter ing mode 648 Reference Narrow Adjust xx Narrow Oscillo ALNA value Deviation meter Deviation meter scope LPF 15kHz LPF 15kHz PC test 2 208 mode Press B key to PTT Press Transmit 140 11 gt store the adjustment button Press Apply value button to store the adjustment value Wide Adj item 1 Adj item DTMF Write the value 3 0kHz 0 05kHz DTMF Deviation Analog 648 Reference Wide value ON PTT Press Transmit Press B key to button Press Apply store the adjustment button to store the value adjustment value 50 NX 820H G 820H ADJUSTMENT
32. sis 818 B 5 5 ese 213 275 Sas Da joe cio E 1 no w BU7462NUX eng 5 8 1 CP 708 S p SSeS aS 2 LTCO14EEBFS8 E D1112 TR Switch aec p p 5 HOOK 4 96V E GPlo10 Ki pii Dvpp3 aly oy 1 t si zi 4 obs Txvco R 3 3V Q9 vgs ez SP PTT 4 62V KEY BACKLIGHT B30 2337 05 4 7k 5 2 Ben 19 NG Smear 258 B Di DI Ct a STF Assist Tune T 0 0V 55 3 15 5 TUS ome ome 2 TX Power Detection 25 5000 SB 13 53V s CONSUL y F502 DEI 5 2 EE 4 5 525 4 o 8181 15 78 olla m 6 yu ipd 2 GPici2 faz FSDET anm melano D 1 58 22 Oo 233 s Overvotage M pm A soc FE oor ends Ara mel 277 Sua 100kx4 881 158 58 s 1 sace 1 D EM6M1 1178 Protection 7 HOOK 2 5 ses 9410 013 g CP706 4 3 R138 10k Dio AUS 135 GPlo10 AVE 5 5 ENT R423 2SA1955A F CN419 RTCINX2 812 R536 R549 0015 Ice O in 1 gt lt 8667 145 0106 BLC 618 100 6 cpio ASTSW alg 4 22 4 C55 R52
33. DC AMP CV Assist 5 S 20KHz 5 B BUS B BUS 5 02 150C 8 150 8 50 53 3 83V 5 lt 5 5 1302 359 i 0 10 0 01 82 0 R3039 1 5 8 28 a FM System Pu 0305 Sio 1C303 5 212 28C5108 Y F TK10931VTL G Ose 927 3 8T3 1 330 7360347 371 355 C367 did 0 1u 0 01u 0 01 0 0 01u 0 93V 50345 0 1u L72 1017 05 May 100K r R308 louT cas R323 C327 R332 0 elsz 505 822 0 1u 0 0 otu 338 BRS ZSA 2SC4215 F Y 2 R326 333 0 10 3 C334 0 10 DC AMP RSSI 5 10304 335 010 BU7445HFV eri 5 326 i 4 8 STs Fes e 3 9 3 C351 9 1 100 N CN306 IF DET SP SP MIC MIC ME ME B BUS B BUS X57 824 7 10 82 820H SCHEMATIC DIAGRAM AN C12 C47 C49 050 118 121 1208112091121111214 46 55 57 82 185 R86 R90 TH2 X57 824X XX NX 820H G 820H L34 4608 15 180n 27n 27n 27n 18n 68 150 150 0 0 0 1M ERTJOEV104H NX 820H G 820H Sp 3p 18 270 7p 10 150 134 4609 15
34. TX RX unit Component side In the case of 5 1 TTL level R664 R635 and R662 00 chip jumper R666 R633 and R665 open RS 232C level R666 R633 and R665 00 chip jumper R664 R635 and R662 open In the case of 5 2 TTL level R664 R635 R662 R659 R658 and R632 00 chip jumper R666 R633 R665 R663 R660 and R630 open RS 232C level R666 R633 R665 R663 R660 and R630 00 chip jumper R664 R635 R662 R659 R658 and R632 open 6 Changing of Signal Type 6 1 Change signal output of D SUB connector from DEO to AFO The output 4pin of D SUB 15 pin connector is config ured at the DEO as the default value Remove the R796 chip jumper and solder the clip jumper to R798 6 2 Change signal input of D SUB connector from DI to MI2 The input 5pin of D SUB 15 pin connector is configured at the DI as the default value Remove the R797 chip jumper and solder the clip jumper to R799 NX 820H G 820H DISASSEMBLY FOR REPAIR 1 Disassembly Procedure 3 Disconnect the flat cable from connector of the panel as sembly 1 Remove the cabinet top packing and shielding plate of the transceiver Cabinet I 24 4 Hook the finger to hole and while pulling the speaker holder to this side expand the panel side of 1 to 3 and remove the speaker holder from the front pa
35. 622 6261 C623 R672 17 b 159 IC514 8 E E17 DS fall sd 183 1 9 Er Far 327 C443
36. Gate bias D105 103 HSM88AS E gt NJM12904RB1 Bon For 7 4 0104 i HSM88AS E Q105 R FK 330301 DET HL DC SW Fig 5 APC Circuit 12 NX 820H G 820H CIRCUIT DESCRIPTION 5 PLL Frequency Synthesizer 5 1 TCXO X1 The TCXO X1 generates a reference frequency of 16 8MHz for the PLL frequency synthesizer This reference frequency is applied to pin 9 of the PLL 122 and is con nected to the IF circuit as a 2nd local signal through the Tri pler The frequency adjustment is achieved by switching the ratio of the dividing frequency The resolution of the adjusting frequency is approximately 4Hz 5 2 VCO There is an RX VCO and a TX VCO The TX VCO Q6 generates a transmit carrier and the RX VCO Q5 generates the 1st local signal For the VCO oscillation frequency the transmit carrier is 450 to 520 MHz K type or 400 to 470MHz K2 type and the 1st local signal is 400 05 to 470 05MHz K type or 350 05 to 420 05MHz K2 type The VCO oscillation frequency is determined by one sys tem of operation switching terminal T R and two systems of voltage control terminals CV and ASSIST The operation switching terminal T R is controlled by the control line output from the ASIC 1C507 When the logic is low the VCO outputs the transmit carrier and when it is high it outputs the 1st local receive signal The voltage control terminals
37. R5 KMI3 51 Over DC Supply SAS 35 LOV 2 3 205 gg MCDOAF 10 Bak 6 R837 N 6 9502 342 100k RAFN RES 15 EMG 27 528 555 ajajaja Saja 2 HOOK RXDLTIS E 4 vss 1 1c713 DB25310 de M 1 12 C6284 glu 25 LTCOlaTEBFSB 172 1017 05 21 A une ETT DRE Protectiono 57 9855 228 ajaja e g MCDIAF 5 MAR TC7WS3FK F Reverse T c2 5 C307 8 C313 n323 Cr RSS 0 AMI Son R203 Tax dst Mer s 5 age Front RX 55 5 27 16 GND 52 lg 201 vis 5 R643 3359 i 218 8 5 S F503 ST BOANT ADS o i ju je 2 fu 5 Ino mco MCSCKAF 508 Current Provention a3 Ruin 8657 R661 REG IN our 2550305 S355 r ww s N z bapa 5 ao vaa g Ion 8 co 3 dE PES S ER 2 lt 1 8 9 sms 4 5 Dus BUS Buffer 100p sov 1 1 K DC Switch GOANT s 253 ssa 232922922 22 fb ee 52 ST C629 25 d AB 8 CM 17 NC a RB5205M 30 335
38. 18 12 OT 414 18 Sp S ORS 5 0V 17 R7 0 817 8 MBL 0 o 9 10 GLED 11 BLED 12 GND 1 5 o 14 GND 222 3 R5 9 15 EMG 16 GND 4 1k og I T9 17 NC oT 5 0V o OG L1 o 18 500 50 Fil 1 19 LCDDI Si LCD DRIVER 1 20 LCDCE o 21 LCDCL LC75857W E 22 LCDDO 100 4 23 GND 8 30 2321 05 5151 Rassy 6 24 9 R 4 95 022 9292 TOV 25 MIC LEDOFF 0V x m 1200 R213V 126 a T 5 0V_ 27 HOOK 255 132 4 7 28 PTT a3 a6 29 KTC4075E Y GR KTC4075E Y GR 03 LED OFF 0V ROV oy TX LED 30 POWER LED ON 5 0V cu SWITCH e e e e oO o 9 POWER Q10 D23 N Fe l l 3 27V 1 LTCO14EEBFS8 B30 2151 05 Q6 TXLED BUSY LED 02582 SWITCH D22 UNO SWITCH 1 CONTROL INDICATION ol on aaah Tisa a lt 77 54 383 1 1 NX 820H G 820H BLOCK DIAGRAM UNIT X57 8240 1X
39. BD7542F VM POWER EMG D201 202 50R 450kHz D203 205 D204 206 15 278 15 278 508 0305 2 1 35 318 RLED GLED 450kHz 25C4215 F Y 95mHz Y IF DET Ist 511 IC303 MCF BPF TC74VHCT244AFK TK10931VTL G 209 211 2 LCDCL LCDCE LCDDI lt SCKO LCDCS SDDO IC304 RSSI BU7445HFV 40408 LCDDO SDIO puse cd en BUCNT2 isst 33625 4801 M HOOK RXD1 GPSC CL 33M 1c509 2 2 1 716 2 2 5 W02 3768 05 TC7WH126FU F TC7WH126FU F BUCNT1 4 5 HOOK MKEYO 1 HOOK RXD1 1 716 1 2 50C MKEYI gt SV gt 1 509 1 2 TXD1 212 GPS e 50 TC7WH126FU F DB25310 gt 4 i rev D511 ASIC 513 a 2 DB25310 22 22 Lom 33M 4 0825310 ies RXD2 gt 4 D RXD2 GPS ALM phas Only GPS Model lt O TXC RXC T_R H_L HSW DSW 555428 UE ES x DDCLK ASSIST ASTSW SBC SP DI FLDM TEMP OVRB SB DC SW p WP BLVL MRSW INT15P EVCS BINT 1 Q403 981400 D703 704 IC703 1 2 F503 80C ExtSP JACK DA3S101F BU7462NUX 80ANT SV AVR imos SP Q703 25 1832 DI LPF 2SA1955A F IC1 0704 25 4738 6 7808 BINT 4
40. D023N Q 07541 07541 1590 1590 9 2 tone A 304 7Hz B 3106 0Hz 2 tone A 304 7Hz B 3106 0Hz Single Tone 979 9Hz Single Tone 979 9Hz None Single Tone 1000Hz None MSK MSK MSK NX 820H G 820H ADJUSTMENT mode signaling Key operation Function Push Hold 1 second RAN1 Adjustment value up down 20Hz 2kHz During transmis sion in balance adjustment Maximum deviation pattern FSW PN9 PC test mode only RAN Radio Access Number Wide Narrow Very narrow PN9 Pseudo Random Pattern for production only Shift to panel test mode To enter 5 reference level adjustments Panel Tuning Mode lt B Writes the adjustment value E Transceiver tuning To enter tuning mode c gt Go to next adjustment item enter tuning mode press the S key while the trans ceiver is in test mode Use the lt B key to write tuning data NM Volume level up down through tuning modes and the A to adjust tuning re PTT Transmit quirements 1 to 4096 appears on the LCD 0 to 9 Use the gt key to select the adjustment item through and tuning modes Use the A key to adjust 5 reference level 4 gt adjustments and use the g key to switch
41. PH 3 g n ju R811 3 1 2337 Sle gle GND piar Ei als ale r m mn m ononon at ve 550979055 aeu 2 622 100 E 9102 ERES 86177 Rin ANT B30233705 k1cC4075E Y GR Sis sis sis 5 1404 6 2 RB520SM 30 50M 458 5 Delma x mm 5 ois Ped 35 0 ad bad 2298 BIS Tox Sd 10K t GND1 vcc 8 910 9 1121 470 25 3357 C119 R188 C136 Kun L116 T Ub T B Boost fe 228 ST C533 ko E Z F jer oon e JO VJ SS S gt gt gt gt 9 jen Z jer pen jen fee jur of FEE SJ OP ox fen ESN 12 55979865 Mute MI ud 0 01u x 19 R20 R24 is Yok 4 ats 25C3108 Y F 25c5108 Y F 4 cose 825 Y Ae RR STS eR787 782 z alee 4 Ble s RER mess siecle Rl LER Protection Caen 555 523 33MDSP 10u R556 4858288803888582223522825888828595355882283338248382828808 558888 25622222222 8 2 1 1 EN 1 512 1 mj sass Reems k AssstTune 755 p
42. 0 10 PR PR PR PR PR Address Parts No Description NX 820H G 820H PARTS LIST Desti nation Address Parts No TX RX UNIT X57 8240 XX Description Desti nation RK73HB1J103J RK73HB1J106J RK73HB1J470J RK73HB1J184J RK73HB1J473J RK73HB1J472J RK73HB1J000J RK73HB1J000J RK73HB1J330J RK73HB1J680J RK73HB1J472J RK73HB1J473J RN73HH1J100D RK73HB1J474J RK73HB1J333J RN73HH1J151D RN73HH1J181D RK73HB1J000J RN73HH1J151D RN73HH1J181D RN73HH1J100D RK73HB1J102J RK73HB1J473J RK73HB1J154J RK73HB1J101J RK73HB1J682J RK73HB1J103J RK73HB1J221J RK73HB1J391J RK73HB1J101J RK73HB1J102J RK73HB1J474J RK73HB1J101J RK73HB1J102J RK73GB2A000J RK73HB1J100J RK73HB1J000J RK73GB2A000J RK73GB2A000J RK73GB2A000J RK73HB1J000J RK73HB1J000J RK73HB1J105J RK73HB1J332J RK73HB1J221J RK73HB1J471J RK73HB1J120J RK73HB1J220J RK73HB1J221J RK73HB1J471J RK73GB2A680J RK73HB1J221J RK73GB2A220J RK73HB1J272J RK73HB1J681J RK73GB2A150J RK73HB1J471J RK73HB1J153J RK73FB2B821J RK73FB2B120J OO Ol Que 10K J 10M J 47
43. Detect e MIC2 LIMIT DA 80T 404 SW 12402 XC6118C23CMR 2SA1955A F PCA9535BS 512 2 TC7WBD125AFK MUTE DI MI2 DCDC DCDC FNC5 FNC6 LEVEL SHIFT SUM MUTE 4 2006 0415 25C4738 GR F Converter Converter 7 i SCL SDA I2CCK I2CDT 703 2 2 3 3V 5 0V 0705 0416 2SA1832 GR F IC405 3V 5 SSM3J 15FS T LT1616ES6 PBF 33 2 50MC DC SW e LTCO14TEBFS8 HORN 3 0410 50 lt 5 1 502 L 1 MOD T Jed MOD CAD 2SA1955A F E SBC2 Q503 IC701 1 2 XC6209B502P G 21 981400 L SV TXD2 BU7462NUX FN 33M AVR X 1 702 1 2 1 712 3 8 ice XC62098332M G HR2 50C TC74VHCT244AFK BU7242NUX R2A20178NP Er ASQAPC m DAC MP OVRB DC SW 4 AVR 45 TXD2 F1CNT 5 50 5 0408 2297 n 1 409 Py LTCOMEEBFS8 D RXD2 EVCS SCKO SD00 1C712 7 8 EMDS NJ 2878 4 33 TC7WH126FU F R2A20178NP SAVE SBC2 1 2 4 FNGLFNES TXDO RTSO IC702 2 2 1407 BU7242NUX EVCS SCKO SDOO NJ 2878 4 33 50MC GPSC BPF DET 33A Le 58 ee ol 1 1 705 1 2 1 705 2 2 BU7242NUX Q702 BU7242NUX XC6209B332M G h SOME RS 232C 1 w_ N Kr KTC4075E Y GR PLD 33A 2 SW DATAI DI 12 Driver Q701
44. 18 basion 820 220 2 7 220 22 2 I UNIT X57 8240 1X w f m mmm a w m w w 12013 iz o11 013 Nx820M 2 No no is Big D M ku a z B BUS EE EE EE EO EO EE 1 P P 7 834 AM S FSX0 BUS Baus O w DE EEU B BUS EET E 8 ll X w MCLK 3 B BUS 1 MOD cuxo CLK
45. DIGITAL TRANSCEIVER SERVICE MANUAL NX 820H G 820H KENWOOD 2012 9 PRINTED IN JAPAN B53 7033 00 Y 672 s 7 mete J 05 Modular jack Key top Panel assy Badge E58 0535 05 K29 9479 01 A62 1200 03 B43 1675 04 CONTENTS GENERAL a a ciui indus dada ws 2 TERMINAL FUNCTION 56 SYSTEM u uu ua 4 REALIGNMENT 4 DISPLAY UNIT X54 3830 10 60 INSTALLATION 7 TX RX UNIT X57 8240 1X 0 62 DISASSEMBLY FOR REPAIR 9 INTERCONNECTION DIAGRAM 66 CIRCUIT DESCRIPTION 11 SCHEMATIC DIAGRAM 67 COMPONENTS DESCRIPTION 17 BLOCK 78 PARTS LIST adensasizandaxkxuk uino 19 LEVEL DIAGRANVN 81 EXPLODED VIEW a uu aaa 29 OPTIONAL ACCESSORIES PACKING dii ds 30 into 82 TROUBLE SHOOTING 31 SPECIFICATIONS BACK COVER ADJUSTMENT reiner 35 Th
46. E 0 10 522 521 15MDSP 33MDSP v DGND X2 CLKIN ABUS HOST_RDY 00000 959 5 CN502 4 2 D EMUO 1 D EMU1 2 D TDO 3 D TDI 9 R519 R532 OXOIE7 R513 DRO 56 R515 CN503 lt TiN ToUTO 52 GPlo0 GPloi GPlo2 R541 MCCSXCN GPIo3 GPlo4 GPlo5 CN540 100 CP504 MCSCKCN GPIo6 MCDICN GPlo7 100X2 GPIo8 CP503 GPlo9 GPIo10 GPlo11 ot GPloi2 100 FSDET GPloi3 RTCINX2 8549 RTCINX1 SCL 502 SDA DN 100kX2 DP PU AIN 3 AIN 2 10 AIN O RCVDD 4 RDVDD 3 RDVDD 2 RDVDD 1 AVDD ADVDD USBVDD USBPLLVDD CVDD 15 CVDD 14 CVDD 13 CVDD 12 CVDD 11 CVDD 10 CVDD 9 CVDD 8 CVDD 7 CVDD 6 CVDD 5 15MDSP 33M C528 0 1u C529 0 1u C530 0 10 C531 H 0 1u 33MDSP PLL MOD 68 X57 824 2 10 Sls STS DGND TN Flash Memory IC501 gt gt z Ris 10504 BD5329FV
47. Tz Ej sl aa 5725 223 8 0810 5 E 722 728 5 RS 0701 810 8 NIE e El pg S 703 eg ET S 871 8 si BE ER e n T 5 084260 CN4200 CN418 C707 E708 AR 2739 4270 701 B B 8 BE mg 75 E ee R678 B 510 567 58 9 25 R80 54 E97 576 555 E S po 1 SEE JSE 10511 J amp t 10 CN530 CN507 523 8581 f 9 058 551 LAT RS 1 c gm Fam E 610 i613 B EIE TTY CP516 es rrr un 5 B B BB BARE ex l Ex fel la 65 no 607 S Sj o oo 55 E 55885895 8838 885 83588 CN705 5 CN514 E 2912 72510 p BLE Ez 0251 814 BB 029 032 C34 555 Bren 239 PC BOARD TX RX UNIT X57 8240 1X Component side view J79 0344 09
48. DSP SRAM Reset Buffer AMP Clock ASIC AND Gate Dual BUS Buffer HOOK RXD MKEYI BUS Buffer Leval Shift Dual BUS Buffer FNC3 FNC1 Dual BUS Buffer FNC2 FNCA I O Expander RS 232C Driver VCO MOD VREF LPF APC DMO MIC SUM AMP LPF DI BRF Buffer AMP SQ RX SUM AMP LPF RX AF D A Converter MIC RX Selector AF Power AMP Dual BUS Buffer TXD1 MKEO Dual BUS Buffer TXD2 RXD2 17 NX 820H G 820H COMPONENTS DESCRIPTION Part Name Description Transistor DC Switch Assist Part Name Description FET DC Switch Assist Zener Diode Over Voltage Protection Transistor Ripple Filter Variable Capaci tance Diode RX VCO Frequency Control Transistor Buffer AMP PLL Fin Variable Capaci tance Diode TX VCO Frequency Control FET RX VCO FET TX VCO Variable Capaci tance Diode PLL f in BPF Tune FET T R VCO Switch Variable Capaci tance Diode RX VCO Assist Tune Transistor Buffer AMP Variable Capaci tance Diode TX VCO Assist Tune Transistor TX Drive AMP FET DC Switch H L Power Variable Capaci tance Diode RX VCO Assist Tune Transistor DC Switch 50C Variable Capaci tance Diode TX VCO Assist Tune EET RX 1st Mixer Transistor LNA Variable Capaci
49. 809 CK73HB1H102K CHIP C 000PF HGK HGK2 47PF 0810 CK73FB1E475K CHIP C 4 7UF 0 10UF C811 CK73HB1H102K CHIP C 000P OO 707 CKT3HB1H681K C708 CK73HB1H102K C709 CC73HCH1H270J C711 CC73HCH1H331J C712 CC73HCH1H181J 680PF C812 CK73FB1A106K CHIP 1000 0813 CK73GB0J106K CHIP C 2 27 0813 814 CK73GB0J106K CHIP C HGK HGK2 330 0815 CK73HB1A104K CHIP C 0 10UF GK HGK2 180 0816 CK73HB1H102K CHIP C 000PF GK HGK2 3 0006 0714 CC73HCH C716 CC73HCH 680 101 68 820 CK73HB1A104K CHIP 0 10UF GK HGK2 100PF C821 822 CC73HCH1H180J CHIP C 8PF GK HGK2 0 10U C823 CK73HB1H102K CHIP C 000PF GK HGK2 100P C824 825 CC73HCH1H180J CHIP C 8PF GK HGK2 0 10UF C826 CK73HB1A104K CHIP C 0 10UF GK HGK2 H H C718 CK73HB1A104K 0719 CC73HCH1H101J C720 CK73HB1A104K 6722 CK73HB1A104K 0723 CC73HCH1H470J C725 CC73HCH1H121J C728 CKT3HB1H821K C729 CKT3HB1H681K 0 10UF C829 CK73GB0J106K CHIP C 47 0830 831 CK73HB1A104K CHIP 0 10UF 120PF C832 833 CK73HB1H102K CHIP 000 820 680 CN10 12 E23 1278 05 TERMINAL HGK2 HK2 CN10 15 23 1278 05 TERMINAL HGK HK 1000PF CN14 15 E23 1278 05 TERMINAL HGK2 HK2 4 7UF CN203 206 E23 1278 05 TERMINAL 4700PF CN514 E40 6847 05 FLAT CABLE CONNECTOR 10UF 0 10UF CN801 E04 0410 05 PIN SOCKET 3P HGK HGK2 J501 E58 0536 05 D SUB SOCKET 15P 1 0UF J701 E11 0425 05 3 5D PHONE JACK EXT SP 1000PF 0
50. The second mixer mixes the first IF signal with the 50 4MHz of the second local oscillator output and produces the second IF signal of 450kHz The second IF signal is passed through the ceramic filter CF1 to reject the adjacent channel signal The filtered sec ond IF signal is amplified by the AGC amplifier The signal from the AGC amplifier is input to an AD con verter in ASIC IC507 through the ceramic filter CF2 Fig 1 Frequency configuration ANT 1207 208 0201 0110 111 1215 216 1 9305 1116 117 D107 210 202 1209211 1st MIX 1 303 LPF BPF BPF BPF BPF gt gt gt gt gt gt gt MIX AGC RF AMP MCF ist PLL B OSC PLL o BPF xi g N CF1 16 8 2 IC 711 IC 711 1 2 2 2 lene IC714 gt gt gt gt voL gt gt 2 Receiver System 11 NX 820H G 820H CIRCUIT DESCRIPTION 3 3 Audio amplifier circuit Audio processing high pass filter low pass filter de emphasized and so on in FM mode and decoding in NXDN mode are processed by the DSP 502 Audio signals from the ASIC 1C507 1 502 goes through the amplifier IC711 The signal then goes through the D A converter 712 and an amplifier 10714 3 4 Squelch Circuit This circuit amplifies the demodulated noise signal from the ASIC 507 after fi
51. When a normal condition is confirmed When an abnormal Verify the connection of KRA 40 condition is confirmed SMA connector Connect the KRA 40 correctly When a normal condition is confirmed 7 When abnormal Verify the connection of the SMA condition is confirmed Connect the cable to the CN801 connecting cable correctly CN801 E04 0492 05 When a normal condition is confirmed When a normal i When an abnormal d Verify the supply voltage ofthe value is confirmed value is confirmed 40 may be broken L802 3 0V 1802 3 0V Replace the KRA 40 When a normal value is confirmed When an abnormal The GPS power supply circuit may value is confirmed be broken Check IC407 and its surrounding 5 Verify 52 value is confirmed The backup power supply is faulty L806 33 1 406 The GPS module may be broken When a normal Replas A801 value is confirmed When an abnormal wave form is confirmed When a normal wave form is When an abnormal 7 confirmed Verify the TXD data output from the wave form is confirmed GPS module CN802 Square wave form The output of the GPS data is verified 1C801 Square wave form The Buffer IC may be broken Replas 801 When a normal wave form is confirmed When an abnormal Verify the RXD data line w
52. lt lt lt lt lt lt lt lt lt lt lt NX 820H G 820H TERMINAL FUNCTION Signal Description Item and Condition Type VIH VIL VOH lo 1 5mA VOL lo 1 5mA Output Voltage Digital Programmable 5V DC Power supply Output Current Input Voltage Analog Horn alert signal input Input Current Rds ON VOH lo 1 5mA VOL lo 1 5mA Output Voltage Digital Analog Horn alert signal output Output Current Input Range Digital Threshold Low Threshold High Ground 59 a NX 820H 1 e s 820H DISPLAY UNIT X54 3830 10 Component side view J79 0345 09 C12 m C21 15 60 25 gt C2 35 C36 K L M N P R S Pc BOARD NX 820H G 820H DISPLAY UNIT 54 3830 10 Component side view J79 0345 09 Component side Layer 1 Layer 2 Foil side
53. 0 14 010 WRITE READ BHE BLE B14 14 IRD PA INAMT A13 D13 ICS3 52 5 cs2 cst cso HRADY HDs2 TXDO B13 14 12 R18 RXDO RTSO R16 HOOK RXD1 T15 TXDO 1 80 HRDY HDS2 LevNO 21531 01531 OLSH 184 LNVOS8 ONVOSS isu ALEK 0AIN ZoA 33 10439 0043X IA33 ZIA33 1OQVOIIN ovaas HAOIW 690v voav 215045 Lisods 015045 1048 17085 205248 105045 005245 0048 0148 48 198 155 4338 CN507 00 899 AD todas 14241 114 2 ver RST WEE 69 X57 824 3 10 B BUS LN 5 m 82 B BUS FSX0 820 5 33M 15M CHEM ATIC DIAGRAM CLKXO 18 423MHz X501 L77 3015 05 S oUTPUT GND 2 VOC 1508 H D3 B B 70 2 DGND13 DGND12 ASIC 16507 BU731
54. 1506 R223 225 ES Roi u zT T t 7 s S 2 NE t5 15 515 z 5 nox SaN a oa 4 HS 97505 875 HE 876 He 572 Slam m olor NER 1 575 STs TS L71 0678 05 5 E rh m 7 D201 203 205 R394 1312 1315 1316 C360 1203 270n RX BPF Tune 525 2 K K2 180 150 4 ase S STR NSS 1L 3 76V 2 8 V amp ors ET fCTATV 6 66V fH 10 66V 10 17V S S af gt 8 S e 53 5 7 150 150 EE Six age 0239 0 10 s 240 10201 BD7542FVM A gt P a SP SP Sp SP MIC MIC ME ME B BUS B BUS X57 824 8 10 CHEMATIC DIAGRAM X 820H 820H X57 824X XX C124 C129 C133 C135 C137 C142 C144 C145 C148 C149 C150 C175 C179 C180 C254 C255 C256 O263 O290 o292 C296 D102 L210 L213 1215 228 102 103 104 130 184 185 R188 2918292 0 10 0 11 820 8 820 No no no 22p 2 5 5 2p 22 7p 2p 10 100p E25 127805 68n 18
55. 27 18n 470 12 470 820 820 56 0 0 0 12 0 13 NX 820H G 620H 2 7p 7p 220p 470p 100p 470p 100 010 100 470 6p 18 0 18 NO DA3S104F 82n 22n 33n 2 7 220 22 220 15K 470 470 12 NO NO TX RX UNIT X57 8240 1X THP1 E23 1278 05 CN14 CN10 3 3k R101 C102 470p 2 6 25 pr TX Power Module 10102 DC Switch 50C Q106 5 HSW 11 4 75 T 45W 30W 0 0V T 5W 3 3V 4 f 33k s 2 25 22525 0110 111 K K2 lt 2 roov R 0 0V Antenna Switch T 45w 3 1v T 45W 3 3V D110 TX Pre Drive T 30W 2 5 T 30W 2 N 2 0101 T 5W 2 1V T 5W 2 1407608 al 28C3356 A R24 C109 R103 C104 TX Drive AMP 0102 32dBm Lo Pow 25 3357 C119 8188 0111 177 gt bi L407CDB 100p R 13 6V ai a T 12 9V 45W 5 gt z 5 K 4 2dBm 5 8 23286518 2 1 498 wl amp BE 2
56. 470 4 7UF 6 0 470 100 100 470 6 0 6 0 HGK HK 7 0 HGK2 HK2 470PF 22PF OD 60060 47 6 0PF HGK HK 7 0 HGK2 HK2 100PF 220PF HGK2 HK2 Address Parts No Description NX 820H G 820H PARTS LIST Desti nation Address Parts No TX RX UNIT X57 8240 XX Description Desti nation C142 C144 C145 C146 C148 C149 C149 C150 C151 C151 C152 C154 C155 C156 C157 C158 C161 C165 C167 C168 C169 C171 C172 173 C175 C175 C177 C179 C179 C180 C180 C183 C184 C187 188 C190 C191 C192 C193 C194 C197 C197 C201 202 C203 C204 C205 C206 C207 C208 C208 C209 C210 C211 C212 C212 C213 C214 C214 C215 216 C217 C218 C218 CC73HCH1H220J CC73HCH1H470J CK73HB1A104K 093 0550 05 CC73HCH1H101J CC73HCH1H220J CK73HB1H471K CK73GB1E105K 093 0551 05 093 0553 05 092 0875 05 CK73HB1E223K CK73HB1H471K CC73HCH1H101J CK73HB1H102K CK73 471 CC73 H040C CK73 471 73 H040C CK73 471 CK73HB1H102K CC73HCH1H101J CK73HB1H471K CC73FCH1H020B CC73FCH1H060B 093 1871 05 093 0553 05 093 0554 05 093 0555 05 093 0556 05 093 1852 05 093 0557 05 CK73HB1H102K CC73HCH1H070B CC73GCH1H220J CC73GCH1H120J CC73GCH1H330J CC73GCH1H100D 093
57. 8 LEDE EH 829909222099 02900205095 segs 8 5 2 eel em 253512 5 555 2 5 A AVR 80C 8502020909009290000009050225552522555525525555522 Cms EE 2 vaner 2 8 5705 706 gt m 320106 0 017 BSR OTS Y 5 524 TOAN 8 aa 9 KI E 0 esas 09414 44 513 onec C57 5 1900 2 22 2 DS 26 8 EMZ6 8N gt 1 CN304 sme 2194 2 bm y Hs Q202 8 i 100 a z 59 5 20125555 8 7 _ C580 0 010 5 FK550301 R79 vile s S sl SL Sl SER sl 2425 nix 28 R218 C251 NESG240034 0 _ 10 GLED HN2S03F 1 53 abs E FF 507 15MDSP sso cso MCCS2 als enn L 4 1 2 5 5 System 5 8 gan 228 SAS aga AAS ASB GAS 263 290 254 291 c289 C297 c296 1228 4 285 5155 rd 0 RADY cs n DEG Pa ass M 1 928 BIS Slag 412 2 2 1718 7p spio 11 BLED 67 DC SWIEIXSB z 200 5 3 52 s Dse ST 19 22 RS 232C Driver
58. DSP Core 1406 33A ASIC Analog AVR GPS Back up pns 33A2 Audio spor 7 l 1 409 330 PLLIG AVR TCXO 16 8MHz 5802 0401 10407 33GPS sw OVRB AVR GPS GPSC 10402 0410 50 _ 882320 Converter DET SW D sub 15 SBC2 Q403 SB Audio Power SW Disply Unit D sub 15 80C Q415 416 150 VCO Tune Assist AVR DC DC Front End Tuning DDCLK oO POR TX Drive APC F503 TXc pis 80ANT ANT SW DSW I O Expander aE 5 PLL IC Disply Unit LED Common AMP 0408 5005 Fin AMP SW RF AMP VCO Buff 50 LNA Mixer Fig 16 Power supply circuit 15 NX 820H G 820H CIRCUIT DESCRIPTION 8 Signaling Circuit 8 1 Encode QT DQT DTMF 2TONE MSK Each signaling data signal of the QT DQT DTMF 2TONE and MSK is generated by the DSP circuit superposed on a modulation signal and output from the ASIC 507 Each deviation of the TX QT DQT DTMF 2TONE and MSK tones are adjusted by changing the output level of the DSP 1C502 and the resulting signal is routed to the VCO and PLL 8 2 Decode QT DQT DTMF 2TONE MSK The audio signal is removed from the FM detection signal sent to the DSP circuit and the resulting signal is decoded by the DSP 9 Compander Circuit The term compander means compressor and expander The compander reduces noise by utilizing a compressor and an expander The DSP 502 p
59. Measurement Adjustment Specifications Item Panel test mode PC test mode Test Unit Termi Unit Remarks equipment nal 10 Single item 1 Adj item Single Deviation ANT Panel tun Write the value 1 50kHz 0 05kHz Devia Tone Deviation meter ing mode 513 Reference tion adjust Adjust Analog Narrow Oscillo ALNA value Narrow Deviation meter Deviation meter scope LPF 15kHz LPF 15kHz PC test HPF OFF HPF OFF mode PTT ON PTT Press Trans 1411 mit button Press store the adjustment Apply button to value store the adjustment value Wide Adj item 1 Adj item Single Write the value 3 00kHzx0 05kHz TONE Tone Deviation 513 Reference Adjust Analog Wide value ON PTT Press Transmit Press B key to button Press Apply store the adjustment button to store the value adjustment value 11 MSK Devia 1 Adj item MSK 1 Adj item MSK Deviation ANT Panel tun Write the value 1 50kHz 0 05kHz tion adjust Deviation Analog meter ing mode 513 Reference Narrow Deviation meter Narrow Oscillo ALN value LPF 15kHz Deviation meter Scope HPF OFF LPF 15kHz PC test ON HPF OFF mode Press B key to PTT Press Trans 411 store the adjust mit button Press ment value Apply button to store the adjustment value Wide 1 Adj item MSK 1 Adj item MSK Write
60. NX 820H G 820H DISPLAY UNIT X54 3830 10 A02 4073 21 PLASTIC B11 1885 03 ILLUMINATION GUIDE A10 4161 01 CHASSIS B38 0936 05 LCD A62 1200 03 PANEL ASSY B30 2337 05 D YELLOW 09 0732 03 CAP D SUB B30 2337 05 D YELLOW B09 0754 05 CAP SMA HGK HGK2 B30 2321 05 D BLUE B43 1675 04 BADGE 30 2151 05 D RED GREEN B62 2421 00 INSTRUCTION MANUAL E S F 830 2337 05 D YELLOW E29 1244 14 RELAY HARDWARE CC73HCH1H101J PC E04 0167 15 RF COAXIAL RECEPTACLE M CC73HCH1H221J PC 220 E04 0492 05 RF COAXIAL RECEPTACLE SMA HGK HGK2 CC73HCH1H1014 PC 100PF E30 7523 55 DCCORDASSY ACCESSORY CCT3HCH1H221J PC 220 E30 7684 15 DC CORD CK73HB1H471K PC 470PF E37 1461 05 FLAT CABLE 30P CK73HB1H102K 1000PF F10 3183 03 SHIELDING CASE POWER MODULE CK73HB1H102K PC 1000 F10 3184 03 SHIELDING COVER TOP CCT3HCH1H221J PC 220PF F10 3203 02 SHIELDING CASE LPF CCT3HCH1H101J PC 100PF F52 0024 05 FUSE 15A BLADE ACCESSORY CK73HB1E103K PC 0 010UF 011 4353 04 SHEET SHIELDING BOTTOM CK73HB1H102K PC 1000 G11 4578 04 SHEET FOR W O SMA CK73HB1E103K PC 0000 11 4611 04 SHEET D SUB CK73HB1H102K PC 1000PF G13 2102 04 CONDUCTIVE CUSHION CK73HB1E103K PC 0 010UF G13 2363 04 CUSHION PANELHOLDER CK73HB1A105K PC G13 2389 04 CUSHION SHIELDING TOP CK73HB1H102K PC 1000PF G13 2395 04 CUSHION X57 CK73HB1C473K PC 0 047UF G53 1643 04 PACKING DC CORD CC73HCH1H470J G53 1662 04
61. Receiver 14256 Section 2 Sensitivity 1 Receiver 1 256 Section 3 Sensitivity 2 39 NX 820H G 820H ADJUSTMENT AW AN NN NV NXDN Very Adjusutment Analog Wide Analog Narrow NXDN Narrow Narrow Adjust item item Number Adjustment range 5 xdi Receiver RSSI Reference 1 256 Section 4 zu Receiver 14256 Section 5 Open Squelch Receiver Low RSSI 1 256 Section 6 Receiver High RSSI 1 256 Section 7 Receiver Tight Squelch 1 256 Section 8 1 Because NXDN Narrow is adjusted by adjusting Analog Narrow it is not necessary to adjust NXDN Narrow E Panel tuning mode flow chart Note In this Panel tuning mode flow chart the Adjustment item name is modified Panel test mode Adjustment Item Adjustment Point LCD Display LCD Display 5 For all adjustment items press the B key to write the adjustment value c gt hold mm A 5 reference level High Trancemit Power Limit arrow A 5 reference level Adjustments HLMT Adjustments E Low Center c Center Center High H High H c gt c gt press c gt hold N Mid Trancemit Power Limit Narrow 5 reference level MLMT Adjustments N gt press gt hold Low Trancemit Power Limit 5 reference level LLMT Adjustments gt press c gt hold High Trancemit Power Na
62. 2 Adj item L PWR gt LPWR LPW R gt L PW R gt L PW R 3 ON 4 Press lt key to store the adjust ment value 1 TEST CH Low Low Center High High 5 point 2 Transmit Press Apply button to store the adjustment value ANT Panel tuning mode IAM PC test mode 14119 45 0W 1 0W 13 0A or less PC test mode Press Apply All button to store the adjustment value after all adjust ment point was adjusted 1 0W 10 0A or less PC test mode Press Apply All button to store the adjustment value after all adjust ment point was adjusted 0 2W 7 0A or less PC test mode Press Apply All button to store the adjustment value after all adjust ment point was adjusted 3 Balance adjust 1 Adj item BAL Adjust Deviation meter LPF 3kHz HPF OFF 2 Adj item B AL_ 1 B A L B A L Press B key to store the adjust ment value 1 Adj item Balance Deviation meter LPF 3kHz HPF OFF 2 Adj item Low Low Center High High button Press Apply All button to store the adjustment value 2kHz Sine Wave Check box Check while transmitting change to 2kHz PTT Press Transmit Deviation meter Oscillo scope Panel tuning mode IAM PC test mode 14119 The Devi
63. 484 8 Be E KS 2281 LL E Em B 528 ce Ex 506 1534 1508 em 5 R73 m m gt Gm Ea 18303 B E le 1 8 0533 8 B EA g 15 55 I R E B 5 B T BB D109 055 411 m AS Us HeH FARE EE 5 I jor IS 1302 BIN E D108 53 6580 5554 5 E 0545 8 CN504 6509 H B el om Cs qu 494 En El ES mg E E Sil 0415 4 3 8 aH s s 5 ES 8 EAR B Ze 3661 1 573 2528 B EG 5440 53 8 8 2569 mma cee at H 5234 R53 R683 J79 0344 09 65 INTERCONNECTION DIAGRAM NX 820H G 820H 13 6V ANT FNC1 SB FNC6 FNC2 IGN 50MC FNC3 SP2 HR1 FNC4 DETO 2 5 DATAI GND EXT SP GPS ANT J501 J701 os Ow OS 171 OUT1 POWERGND TX RX UNIT X57 824 LCDDI LCDCE LCDCL LCDDO GND GND MIC HOOK PTT MKEY POWER 30 RFINPUT DRAINBIAS RFOUTPUT LCDDI LCDCE LCDCL LCDDO
64. 6 1 DETO DEO AFO lt 330301 en 2 4 RXDO CTSO ASQDET Q504 gt 15M 4 4 L5VAVR J ME IC514 62058152 B IGN TC7WH126F U F a 0 2 VOICE RXAF2 QWI lt lt KTIIIIII I lt I I Z K II C IOIIWIIOOII TS ISII lt ILOUIIUIOKMZIISNSS SB gt SUM LPF SPAF RXAF 711 2 2 Sp2 9 SPAF gt BU7462NUX EVCS SCKO SDOO MM MM2 FRST INAMT PA 1 712 8 8 SP 714 IC711 1 2 R2A20178NP LA4600 BUCNT1 BUCNT2 SAVE BSCAN BU7462NUX BARE 4 pr PA EVCS SCKO SDOO Q709 SSM6N37FE 1 713 712 6 8 TC7W53FK F 2420178 SN p DAC gt DEO AFO T sosoo MRSW 5 5 5000
65. DSP 1C502 and Flash memory At this time the ASIC starts working The voltage detector IC IC402 watches the B voltage If the B voltage is higher than 8 6V IC402 BINT outputs High If the BINT signal is high Q403 SB SW is turned on by the SBC signal from the ASIC High SBC ON Low When the SB is turned on 80C IC404 50 Q402 80 0404 80T Q415 416 150C Q417 BOR and Q408 50CS start working IC409 Q409 and Q410 are controlled by the SBC signal If the SBC signal becomes High 409 33C operates and 0409 33A 2 and Q410 50MC SW turn The ASIC sets the TXC signal to High during transmis sion to the supply power 80T for the transmission circuit The ASIC sets the signals RXC to High during reception to the supply power 508 for the reception circuit When the ASIC detects the PSW Power switch signal IGN Ignition sense signal or BINT signal it sets the SBC signal to Low and turns the transceiver power SB off When D401 and Q401 detect an over voltage condition they turn Q403 SB SW off but the ASIC continues to function NX 820H G 820H CIRCUIT DESCRIPTION B gt Final 401 5 10405 50M gt BUFF ASIC Digital SM gt DSP 1 0 FLASH SRAM Clock Buff 1408 15 Core
66. FLASH 501 SRAM IC503 When the IC is problematic please bring the printed circuit board X57 8240 14 15 16 17 in for service Various ESN default adjustment values are written on the printed circuit board for service Additionally various ESN stickers are included After the printed circuit board has been readjusted please attach any ESN stickers to the chassis When ESN Validation is used with Trunking you must modify the ESN register Checking power supply voltage Checking voltage When an abnormal Points to be checked Normal voltage value is confirmed 33M IC401 5 pin 3 3V 15M 1 408 5 pin 1 5V 33A IC406 5 pin 3 3V Power supply of each device is connected through the coil ASIC 33M L508 15M L510 33A R571 DSP 33M 1503 15M R505 FLASH 33M L501 SRAM 33BU L504 When a normal e Checking the clock value is confirmed Checking the clock When an abnormal value is confirmed Points to be checked Normal voltage 3 3V 18 432MHz 506 4 pin 18 432 2 When normal value is confirmed Checking the Reset Control signal Checking the control signal input to the ASIC Points to be checked Normal voltage value is confirmed RST RESET IC504 1 pin 3 3V BINT 1 402 1 pin 3 3V OVRB D403 Cathode side 3 3V When a normal value is confirmed Checking the ASIC input switch signal The POWER key is pressed and held
67. J79 0345 09 Component side Layer 1 Layer 2 Foil side 61 12 E G NX 820H 4701 10 11 12 13 14 820H Pc B0ARD TX RX UNIT X57 8240 1X Component side view J79 0344 09 J501 62
68. L Etoile Paris Nord 2 50 All e des Impressionnistes Bp 58416 Villepinte 95944 Roissy Ch De Gaulle Cedex Kenwood Electronics UK Limited Kenwood House Dwight Road Watford Herts WD18 9EB United Kingdom Kenwood Electronics Europe B V Amsterdamseweg 37 1422 AC Uithoorn The Netherlands Kenwood Electronics Italia S p A Via G Sirtori 7 9 20129 Milano Italy Kenwood Ib rica S A Carretera de Rubi 88 Planta 1 A 08174 Sant Cugat del Vall s Barcelona Spain JVCKENWOOD Australia Pty Ltd Talavera Business Park Building A 4 Talavera Road North Ryde NSW 2113 Australia Kenwood Electronics Hong Kong Ltd Suite 2504 25 F Tower 2 Nina Tower No 8 Yeung Uk Road Tsuen Wan New Territories Hong Kong Kenwood Electronics Singapore Pte Ltd 1 Ang Mo Kio Street 63 Singapore 569110 14 G H K L M N P Q R 5 DISPLAY 820H G NIT X54 3830 10 Component side view J 79 0345 09 DISPLAY UNIT X54 3830 10 Foil side view J 79 0345 09 J 79 0345 09 C2 C35 C36 EJ gt
69. 52 E ee Pz als 22 E m Wa Be 8 PEN Lam 5 8 8 2 s Q amp 02 2 En ele Ed 7 20 1 11 1 1 33 k 712402 AAN 3 z 5 15 PSTPA Tag 8599 E Lim 82 VouT8 eu pce 8634 290p DATO EMD9 O 5 17 5 gt 3 m 3 gt c732 Noise 3 12 DATO w 5 3 sP ais 15 1 1 XC6118C23CMR EP 0 17 14 Ez pns RI 5 T Detector 5 payouts u m veurn ik I I 100 TEAT 5 5 B BUS EMG o Dec DLA 5 F B BUS gt at Z 8 3 an ons s 8 1000 2434 2 970 pata DEO AFO ni m isi seers ris scs mate Baus 2 1 sta TS gi g 1 8 5 225 3 3 R501 E m cop ne RXRVE Ez 5 hla Noise cus b SideA RBS20SM 30 gl GEREENT ep ole Ls 18 J 55 8 z VM X2 CLKIN i Write NET ei RXC 2 BU7242NUX 30702 of als m zx 5 A 5 8 E RXD FNC2 Gil e ____ 5 2 5 150 150 150 R223 C206 kC221 225 231 E zin sz BUE
70. Apply button to store the adjustment value and 3117Hz Deviation meter LPF 3kHz HPF OFF Panel tuning mode PTT ON PC test mode PTT Press Trans mit button adjusted Write fixed value 513 for each adjustment point Transmit at each adjustment point and check that the Analog deviation is between 1331Hz and 1363Hz Deviation meter LPF 3kHz HPF OFF Panel tuning mode PTT ON PC test mode PTT Press Trans mit button 1311 1363 2 PC test mode Press Apply All button to store the adjustment value after all adjust ment point was adjusted Panel test mode PC test mode NX 820H G 820H ADJUSTMENT Measurement Test equipment Unit Termi nal Adjustment Parts Method Specifications Remarks 5 Maximum Deviation Analog adjust Narrow Adj item ADEV Adjust Deviation meter LPF 15kHz HPF OFF ON 0 store the adjust ment value 1 Adj item Maximum Deviation Analog Narrow Deviation meter LPF 15kHz HPF OFF PTT Press Transmit button Press Apply AII but ton to store the adjust ment value Adj item ADEV Adjust ON store the adjust ment value 1 Adj item Maximum Deviation Analog Wide PTT Press Transmit button Press Apply but ton to store th
71. BE b CN220 162 pal 2 0522 R680 5 El 8 B zz 2 234 Bs 215 217 Ris cesi 257 8 8 gt r BET em x R84 8 D202 6223 E 5 HE 2115 5 SI po F cu 2726 amp 754 710 E ERES lt 8778 776 8783 R12 29 565 cz 1 1 3 em JB Component side E CN507 CN528 R681 E B s 8233 8235 581 gt OO 8704 E ll p aa Layer 1 zi e734 S R711 m T B ran E al ie am 2 m gt 2327 5 CP516 n Layer 3 rr 5 R34 E EE FE 5 5 R RI 4 BEBE Es EE Blad Ex 79 0344 09 5 2 R31 2 8339 6 341 CN705 il ci AT Foil side 344 CN306 14 G H K L M N R 5 NX 820H G 820H PC BOARD PC BOARD NX 820H G 820H TX RX UNIT 57 8240 1 TX RX UNIT 57 8240 1 Foil side view J 79 0344 09 v Foil side view J 79 0344 09 gt w 0705 D706
72. BU7242NUX 820 LPF APC DMO 772 R783 VOICE 1 0 039u 15k C808 1 150k R827 RXAF C746 0 1u 82k 56k R754 B BUS U E EEE w DIAGRAM 820 820H TX RX UNIT X57 8240 1X X57 824X XX 8781 m ww m u 0 100 11 820 0 820 0 NX 820H GJ 820H K2 NO B BUS D D703 704 2074 5 0703 AF Detector 0704 5 B BUS 9 DA3S101F 2SC4738 GR F 8 98775 1 Q703 704 5 2 g o E gso 4 5 Bl 858 238 2 92986 ere T 144 TTS
73. Diode DC DC Converter 50M Transistor DC Switch Horn Alert D408 409 Diode DC DC Converter FET DC Switch Horn Alert D410 Surge Absorption Surge Protection Transistor DC Switch IGN D411 Diode Reverse Current Provention EET SQL Noise BW Switch D502 Diode Reverse Current Provention Transistor Noise AMP D504 Diode Reverse Current Provention Transistor MIC AGC D505 510 Diode Line Protection FET Mute MI1 0511 513 Diode Reverse Current Provention FET Mute MI2 D601 Diode Line Protection Transistor Pop Noise prevention switch D701 Diode Reverse Current Provention FET AF Mute Switch D702 Diode Noise Detector D703 704 Diode AF Detector D705 706 Diode Line Protection D801 801 Diode Over DC Supply Protection NX 820H G 820H PARTS LIST New Parts Aindicates safety critical components L Scandinavia K USA P Canada Parts without Parts No are not supplied Far East Hawaii England E Europe Les articles non mentionnes dans le Parts No ne sont pas fournis China X Australia M Other Areas Teile ohne Parts No werden nicht geliefert NX 820H G 820H DISPLAY UNIT X54 3830 10 Address Parts No Description Address Description
74. Lsos 561 Rso2 Rsss Rs3o Rs42 Rs43 R844 IC801 0 10 0 11 NX 820H G 820H 5 18 270 470 5 200 050 3p 5 4p 7 6p 120 4p 2p 13 8 5p 180n 180nL34 4607 15 L34 4608 15 1801 180n 180n 15n 15 39n 27 270 27n 270 68 150 150 o o 1 0 10 0 11 NX 820H G 820H K 2252 2 SP 5 2p 22 7 2 10 100 2312 55 18 27n 18 470 12 270 v E Em EN wo 788 o 010011 4 820 5 8208 0 0 10 0 12 NX 820H G 2 YES YES YES YES 5 Yes YES 5 ves Yes ves YES ves ves YES YES ves ves YES 5 YES YES YES ves YES YES 0 12 0 13 NX 820H G 820H 2 7 4 10 1508 2708 80 240 7 5 4p 1 12 8 5 150 10 156 5 5 220 20 132 4608 15 134 4609 15 2201 2200 220n 18 180 471 330 221 33 180 180 wo noj no 92 013 20 20 2 7p 7 220 470 100 470 1002 0 14 100 470 18 18 10
75. adjustment value PC test mode 1411 PC test mode Automatic Adjustment Press Tune Assist Voltage button Press Apply All but ton to store the adjust ment value after the automatic adjustment has finished Manual Adjustment V indicator on the window shows VCO lock voltage Change the adjustment value to get VCO lock voltage within the limit of the specified voltage Note Confirm the VCO lock voltage approximately 3 seconds after the adjustment value is changed 2 5V 0 1V PC test mode Press Apply All button to store the adjustment value after all adjustment point was adjusted Check The assist adjust ment value must be between from 340 to 3550 Panel test mode PC test mode Measurement Unit Test equipment NX 820H G 820H ADJUSTMENT Adjustment Parts Method Specifications Remarks 4 Frequency The Frequency adjustment can be performed only in PC test mode 1 Adj item Frequency SSG output 20dBm 22 4mV CW without modulation Caution Perform the fre quency adjustment under the following conditions Temperature range of 20 C to 26 C 68 0 F to 78 8 F The temperature is displayed on the Frequency adjust ment screen of the KPG 141D and the LCD of the trans ceiver Use an accuracy of 0 003ppm for the SSG Use a standard osc
76. and ASSIST are controlled by the PLL IC 2 and ASIC 507 and the out put frequency changes continuously according to the applied voltage For the modulation input terminal MOD the output frequency changes according to the applied volt age This is used to modulate the VCO output MOD works only when T R is low Q5 6 MCH3914 8 H D3 4 1SV323F D7 8 9 10 11 12 15 282 5 3 PLL IC IC2 The PLL IC compares the differences in phases of the oscillation frequency and the TCXO reference fre quency returns the difference to the CV terminal and realizes the Phase Locked Loop for the return control This allows the VCO oscillation frequency to accurately match lock the desired frequency When the frequency is controlled by the PLL the fre quency convergence time increases as the frequency dif ference increases when the set frequency 15 changed To supplement this the ASIC 10507 is used before control by the PLL IC to bring the VCO oscillation frequency close to the desired frequency result the VCO CV voltage does not change is always stable at approximately 2 5 The desired frequency is set for the PLL IC by the ASIC 507 through the 3 line SDO1 SCK1 PCS RF serial bus Whether the PLL IC is locked or not is monitored by the ASIC through the signal line If the is not the desired frequency unlocked the PLD logic is low T
77. i Se 50CS Dis 100k BLED 5 0 4 4 T 3 45V_ d s 012 G15 ASIC s 12 50 o o o Li 10k R158 R152 5V_TXD2 p a 13 5 a e 3 2 Amp ASIC cria Es NER 228 5 ETE 1005 m 8 RIT 8 s le K 12 ggo Sas g s 4 5 1 s g s ABO 1 507 1 507 4 11 9 2 I R429 Ab Sage 2 Cae ese nod Sox bees Ripple Filer A70 33k Ik RKS151KJ 1 51535 5 1 1 1 STs 2 DIA 17 BU7317GUKW1 SIMRST AGN 127 R659 NE 100p mmu t Q415416 100k 7 7 8147413 E 9 als Rox 528 D2 T S sF Avusw 9 ABI _ POWER ASQ fir 1 1 0 fe FNC3 o o 2 Tag 3 Q4 m E 1 nau DIS 616 2 25 5383 111 nli Sv A 558 m IDA3S101F Voltage Detector BINT ES 2 ABI 158591 Ps rs E e 25852 1 1 100 C638 PEL UT nlx 0416 P wami 6 assisreR26 gt a zin 2 aS oto c o ove aya NI 2 TA CN417 DIG 18 SIMDT ASQDET R722 5 Sr 2SA1832 GR F 5 SV TXD2 T sso XC6205B152P G AUI NS RDVDD 2 p
78. j BE E 5 m ABS a f 307 R57 B Essa C317 s B m R599 E sl FE mn B 8 8 m C363 Q305 gt 5 8 al K mol 35 5 B 9466 Bm E ma A BSI 8 gaws Ej 5 E Eia BE n m 355 R56 5 5 C535 Component side m is B 11 Layer 1 Layer 2 Layer 3 J 79 0344 09 Layer 4 Layer 5 6 Foil side 14 Hd DISPLAY UNIT 54 3830 10
79. 081 FIN 47 MESS temp H g r 235 C10 0 010 ELEN Lu ome 258 0 01 i 9 EE x ES GND1 vcc 2 R19 R20 15 I OmS s 8 0 390 oUTPUT 9 3 8 1 1 25 3 E E PLL System gt 177 3073 05 fe RENE Ve ELE 11 5 T 0 01u 4 70 58 5 72310 362 100 el T s 552 555 814 33 4 F r 3 3V AEN 1 409 50M R825 330 NJM2878F4 33 I 8 26 0 2 Over Voltage z m 100 Protection a gt 212 C16 p100p ee m gt 17 DC Switch ere on 3 3 7 C18 Assis 9345 Switch 2 lt olx 2 Assis En 5 28J648 A Q1 219 S 1 coe LTCO14EEBFS8 5 8 sir 5 5 Sic 19 ast 1 SBC2 c 162 28 910814 e 4 n 10M 5 D408 409 13 9V de DC DC Converter 0408 0409 9455 fo IC3 al NN 1506 ol 23 BD7542FVM o 5 2 5575 a R13 1JoUT1 1 X m 8 lL 1 R429 R431 817 2 0415 416 8 100k 3 7 1 0415 Converter z 4 i ASSIST R26 2SC4738 GR F GER 2sA1832 GR F 4lvss 95 5 this ask DC Switch 150C C28 100p 09549 cos Ls ogs 4 _ 25
80. 22UF F401 F53 0328 15 FUSE 5A 47PF F501 F53 0324 15 FUSE 2 5A 0 22UF F502 503 F53 0315 15 FUSE 250MA F701 F53 0324 15 FUSE 2 5A OOOO 0732 CK73HB1H102K C733 CK73FB1E475K 0734 CK73HB1H472K C735 CK73GB0J106K C738 CK73HB1A104K 3 0000 C739 CK73HB1A105K C740 CK73HB1H102K C741 CK73HB1A224K C743 CC73HCH1H470J C744 CK73HB1A224K OD C5 C 746 CK73HB1A104K 0 10UF C747 CC73HCH1H221J 220PF CF1 L72 1017 05 CERAMIC FILTER 450KHZ C749 CK73HB1H102K 1000PF CF2 L72 1040 05 FILTER 450KHZ C752 753 CK73HB1A104K 0 10UF L1 L92 0163 05 BEADS CORE C758 CC73HCH1H101J 100PF L2 L41 4795 39 SMALL FIXED INDUCTOR 4 7U 2520 820 820 PARTS LIST TX RX UNIT X57 8240 XX Address Parts No Description Ref No Address Parts No Description DENE L92 0163 05 BEADS CORE L302 L40 5681 86 SMALL FIXED INDUCTOR 0 56UH L92 0163 05 BEADS CORE L304 L40 5675 92 SMALL FIXED INDUCTOR 56NH L40 1001 86 SMALL FIXED INDUCTOR 10UH L307 L40 2291 86 SMALL FIXED INDUCTOR 2 2UH L40 5675 71 SMALL FIXED INDUCTOR 56NH L309 L40 1085 57 SMALL FIXED INDUCTOR 100NH L40 2285 92 SMALL FIXED INDUCTOR 220NH L310 L92 0138 05 CHIP FERRITE L40 1885 92 SMALL FIXED INDUCTOR 180NH L312 L41 1585 14 SMALL FIXED INDUCTOR 150N L40 1885 92 SMALL FIXED INDUCTOR 180NH L315 L41 3985 39 SMALL FIXED INDUCTOR 0 39U L40 2285 92 SMALL FIXED IND
81. 33M 0825310 1C507 2 DB2S3910 gt DR TXC RXC T_R H_L HSW DSW MBL BLC BLED CV THP1 THP2 FWD REV DDCLK ASSIST ASTSW SBC DI FLDM TEMP OVRB BLVL MRSW INT15P EVCS BINT D703 704 Ext SP JACK DA3S101F i n 0703 2SA1832 GR F Q7042SC4738 GR F 4 LIMIT 10515 500 10512 TC7WBD125AFK U 8 lt SUM 5 FNC5 FNC6 EN LEVEL SHIFT I2COK I2CDT 1 703 2 2 3 3V 5 0V BU7462NUX 4 9502 LTC014TEBFS8 Expander 3 FICNT MOD 5V TXD2 LPF VCO MOD Q503 gt F2CNT 1 701 1 2 981400 gt F34CONT SV BU7462NUX 10511 10702 1 2 1 712 3 8 HR2 50 TC74VHCT244AFK BU7242NUX R2A20178NP lt ASGARG gt BURR L 45V 2 FICNT D_RXD2 IC513 EVCS SCKO SDOO 1071 TC7WH126FU F R2A2 LPF 3f p FNC1 FNC2 FNC3 FNC4 lt TXDO RTSO ud 50 10516 gt T ADMZO2EARNZ 15705012 SOMO som 33M F34CONT BU7242NUX 0702 RS 232C WIN m KTC4075E Y GR DATAI DI Diver TN lt DETO DEO AFO lt FNC2 FNC4 RXDO CTSO ASQDET Q504 ien LTCO14TEBFS8 15512 EN non TC7WH126FU F BEEP F2CNT RXAF2 01 sB VOICE gt sum gt LPF DAC 10711 2 2 EVOS SOKO SDE 1 712 8 8 MM MM2 FRST INAMT PA 10711 172 BUCNT1 BUCNT2 SAVE
82. 5005 m y E BD7542F VM Bi 5 cv 03 4 Slee 5 Rev 1SV325F 9 0105 D7 8 9 10 11 12 500 DC SW HSMBBAS E i i TE VCO MOD ded 1506 TSV278F HOW 10103 DET REV i LPF NJM12904RB1 ASSIST Q1 LTCO14EEBFS8 gt FWD DC SW 02 25 648 500 D2 DZ2J091 M ptl 103 2 2 of gt ASTSW eg BD7542FVM 88 SW Fin LL gt sw i TX 480 520MHz K BER 55 0105 400 470MHz K2 50 FK330301 i RX 400 05 470 05MHz K 88 BD7542EVM I 350 05 420 05MHz K2 0303 8 TVI i 2SC5108 Y F FE i BPF 8 8 55 10201 1 2 BD7542FVM 450 2 Tv 0201 202 508 D203 205 D204 206 15 278 1592786 Y 2 0305 ore 2804215 F Y 35318 0202 49 95MHz NESG240034 ist i IF NE le EG MCF le BPF le LNA BPF x 207 208 215 216 2 209 211 C304 lt 508 16801 33GPS 33 i 801 1 02 3768 05 TXD2 HZD1 GPS P ig 1X01 H 1575 42MHz D RXD2 3 GPS ALM arse Only GPS Model i B lt DCin F401 F53 0328 05 i GND SB DC SW 4 0403 sBc2 MTM981400BF 1 703 1 2 F503 BU7462NUX 80 lt aoz DS SW AU 8V AVR GRF
83. 8 els 2 Converter Eo BE 1 515 AVR 33A A 3 27V AVR 33M 498 I 1 N R410 1 47 2 m 2 0405 8 0825310 Discharge As 8 DT R411 5 401 8 8 5 XC6209B332M G a3 47k Sms 2 x F502 S _p z 2 5 9 5 0410 R423 2SA1955A F CN419 17 DC Switch 50MC rr Q407 amp FK330301 CN418 1 DC Switch S0MC R412 10 5 g AVRGSM STS Voltage Detector BINT 3 16408 2 g 8 XC6205B152P G di 4 8 R438 33GPS 2 4 10 7 10402 4 43 1 XC6118C23CMR 8 o 4 Qe BS oye 3 26 53 3 3 1407 al 9 8 5 NJM2878F4 33 8 Ri3 6V 5 T 45W 13 1V C417 100p T 5W 13 0V 0408 MTM981400BF a AVR 80C u ENG DC Swich 80T 520 90404 gS 2SA1955A F DC Switch SB 5 DC Switch 80T E 0411 1 EN LTCO14EEBFS8 5 m Sex Over DC Supply 252 Protectiond 1215 S 0403 45508 eT Q LTC014EEBFS8 4 4 401 1 als 29 DC Switch 80ANT m ale 0418 SAL 82 222 0405 Sas 328 LICOV4EEBFS8 5C 2 Kk S uoces TIS 558 WiIch BOANT 2 5 88 PG Switch 0412 x
84. BSCAN BU7462NUX DAC l INAMT i DC SW PA EVCS SCKO SDt 0709 10713 88 6 37 TC7WSSFK F i 78 04 25 5383 111 014 25101 BLOCK DIAG NX 820H RAM 820H Lippple 5008 one 450 520 MHz K Q8 EMSM1 Q9 SSM3J15FS 400 470 MHz K2 TH TX 450 520MHz K sw TR 400 470MHz K2 2 at D16 17 Q101 Q102 10102 D110 111 L407CDB 5108 0 21617 2803356 A 2803357 A RAGOH40471101 0119151 2407008 Loop T R Pre ANT ANT gt gt DRIVE DRIVE gt CPL Filter BUFE BUFF sw DRINY DRIV RINA SW 010 o 103 1 2 2805108 V F 5 05 6
85. Coupling Capacitor 5 330 uF RL 4 Allowable Frequency 300 3000 Hz NX 820H G 820H 58 TERMINAL FUNCTION Description Item and Condition FM detector output Output Level Coupling Capacitor Allowable Load RX Audio output Output Level Coupling Capacitor Allowable Load External Modulation input Input Voltage Range Standerd deviation Input Impedance External MIC AF Input Input Voltage Range 2 SW ON Allowable Frequency Input Impedance Programmable 1 VIH VIL VOH lo 1 5mA VOL lo 1 5mA Digital RS 232C Serial port TXD Voltage Swing 3kQ Load Baud Rate CL Digital Programmable VIH VIL VOH lo 1 5mA VOL lo 1 5mA Digital RS 232C Serial port RXD Input Voltage Range Threshold Low Threshold High Digital Programmable VIH VIL VOH lo 1 5mA VOL lo 1 5mA lt lt lt lt lt lt lt lt lt Digital RS 232C Serial port RTS Voltage Swing Load Programmable VOH lo 1 5mA VOL lo 1 5mA RS 232C Serial port RTS Input Voltage Range Threshold Low Threshold High Digital Programmable I O VIH VOH VOH lo 1 5mA VOL lo 1 5mA
86. Kx X57 823 7205 X57 824 8205 The same number as the KENWOOD ESN label is written NXDN ESN The same number as the NXDN ESN MPT ESN MPT ESN label is written ATTACHINGTHE ESN LABEL AFTER CHANGINGTHE ESN 1 After changing the printed circuit board write the up to date Firmware following the instructions in the service manual Write the Firmware in accordance to the Market If you write different Market Firmware there are times communication with the FPU is not possible Using the KPG 141D select your desired item Model Name and Frequency from the Model gt Product Information menu then use Program Write Data to the Transceiver to write the FPU data PC Programming mode When writing to the transceiver a Warning Message corresponding to the item selected appears Click OK to continue writing the data Enter Program Test Mode then adjust the various adjustment data PC Test mode as described in the service manual Attach the new labels corresponding to the new printed circuit board Refer to the images below for label placement If necessary write the FPU data used by the customer with the KPG 141D Note When using the ESN Validation function of Trunking the ESN number changes when the circuit board is changed the number is written on the circuit board the Trunking system cannot be accessed Maintain the ESN data of the Trunking System following the new ES
87. ME ME 0 1 5 MIC ME ME 10K SWITCH D22 SWITCH a lt lt lt lt 8 OV POWER CONTROL INDICATION His z x d Sala 1 BE 4 z ERR S F 8 3 BE 5 5 1 BLUE gez 2 3 2 5 B BUS 1 alala 5 x l B BUS B BUS Bus B BUS B BUS B BUS _ 5 2 B BUS B BUS 3 B BUS B BUS lt lt TX RX UNIT X57 8240 1X
88. Parts Method Remarks Item Panel test mode PC test mode equipment 1 AF level setting Panel test mode 1 Test Channel ANT Panel Volume Up Down 2 83 0 1 CH Sig 1 1 Channel 1 tuning Knob to obtain 550 output Test Signaling connector mode 2 83V AF output Volume Button 47dBm 1mV Mode Analog ANA 2 0W 4 in PC test mode MOD Signaling 1 PR load screen 1kHz 1 5kHz Wide 5k Narrow PC test Wide 5k Narrow Narrow Narrow Beat Shift mode Beat Shift Uncheck 4 gt Uncheck Compander Compander Uncheck Uncheck 550 output 47dBm 1mV MOD 1kHz 1 5kHz 52 Panel test mode PC test mode NX 820H G 820H ADJUSTMENT Measurement Adjustment Test equipment Unit Terminal Parts Method Specifications Remarks 2 Sensitivity 1 adjust This adjustment can be performed only PC test mode 1 Adj item Sensitivity 1 2 Adj item Low Center High High Press Apply All button to store the adjustment value SSG AF VTVM load ANT Ext SP connector PC test mode 14119 Write the value as followings L 5 511 Low 30 Fixed SENS1 Low 96 Fixed C SENS1 Center 134 Fixed SENS1 High 167 Fixed SENS1 High 200 Preset K2 L SENS1 Low 34 Preset SENS1 Low 7
89. QD LPF 2SA1955A F GR F 7808 2 2 BINT lt Detect 801 1404 PEN 10402 i 2SA1955A F XC6118C23CMR i MUTE 2 DI DCDC 1500 DCDC i C703 2 2 KUTE IS MI MIC 0415 2SC4738 GR F Converter 200 Converter i 3U7462NUX 9705 0416 28A1832 GR F 10405 i SSM3J15FS LT1616ES6 PBF i 33A_2 MM 50MC A i 500 2SA1955A F F502 SBC2 i XC6209B502P G T 0401 A Z2J180 M 50R ____ 33M lt 712 3 8 10401 2A20178NP XC62098332M G DAC MP OVRB DC SW Fou 5008 DC SW 380 4 164091__ Q401 i 5 1C712 7 8 QE 2878 4 33 LTCO14EEBFS8 i R2A20178NP ISAVE SBC2 LPF i 02 2 2 A 33GPS gg 3VAVR 7242NUX EVCS SCKO SDOO NJM2878F4 33 i GPSc BUFE gt DET 33A 4 3V AVR 1 705 2 2 15306 TEN i E os 555 XC62098332M G i 0409120 SW i EM6M1 1 SBC2 15 lt 1 5V AVR 10408 10712 5 8 XC6205B152P G 2 20178 DAC gt SPAF i i EVCS SCKO SDOO 1 712 8 8 R2A20178NP DAC gt EVCS SCKO SDOO 10713 10712 6 8 5 R2A20178NP i DAC DEO AFO MRSW EVCS SCKO SDOO 79 BLOCK DIAGRAM NX 820H G 820
90. RK73HB1J684J RK73HB1J000J RK73HB1J104J RK73HB1J000J HGK HGK2 RK73GB2A4R7J RK73HB1J332J RK73HB1J473J RK73HB1J104J RK73GB2A100J RK73HH1J104D RK73HB1J103J RK73HB1J473J RK73HB1J104J RK73HB1J104J DOGU O RK73HB1J000J RK73HB1J474J RK73HB1J272J RK73HB1J105J RK73HB1J472J RK73HB1J474J RK73HB1J474J RK73HB1J103J RK73HB1J472J RK73HB1J102J RK73HB1J103J RK73HB1J103J RK73HH1J124D RK73HB1J000J RK73HH1J183D RK73HB1J472J RK73HH1J223D RK73HB1J474J RK73HB1J102J RK73HB1J000J NX 820H G 820H PARTS LIST TX RX UNIT X57 8240 XX Address Parts No Description Der Address Parts No Description posti RK73HB1J103J 10K J RK73HB1J104J CHIP R 100K J RK73HB1J104J 100K RK73HB1J393J CHIP R 39K RK73HB1J101J 100 RK73HB1J104J CHIP R 100K B B RK73 682J 6 8K RK73HB1J394J CHIP R 390K RK73 104J 100K RK73HB1J563J CHIP R 56K RK73HB1J104J 100K RK73 224J CHIP R 220K RK73GB2A000J 0 RK73 102J CHIP R 1 0K RK73HB1J101J 100 RK73 684J CHIP R 680K RK73GB2A000J 0 RK73 473 47 RK73HB1J474J 470K 7 153J CHIP R 15K RK73FB2B102J 1 0K 7 000 CHIP R 0 RK73HB1J471J 470 7 562 CHIP R RK73GB2A000J 0 7 103 CHIP R RK73GB2A000J 0 7 273 CHIP R RK73HB1J472J RK73HB1J223J CHIP R RK73GB2A000J RK73HB1J000J CHIP R RK73HB1J473J RK73HB1J154J CHIP R RK73GB2A000J RK73HB1J000J CHIP R RK73GB2A000J RK73HB1J563J CHIP R R
91. RX UNIT X57 8240 XX Address Parts No Description Address Parts No Description RK73HB1J472J HIP R 4 7K CK73HB0J105K RK73HB1J101J HIP R 100 CC73HCH1H060B RK73HB1J272J HIP R 2 7K CK73HB1H471K RK73HB1J103J 10 CC73HCH1H200G RK73HB1J222J HIP R 2 2K CC73HCH1H240G 1 00 6 0PF 470PF 20PF 24PF RK73HB1J472J HIP R 4 7K CC73HCH1HOR5B CC73HCH1HOR5B DZ2J062 M ZENER DIODE CK73FB1A106K DA3S101F DIODE CK73HB1H471K MINISMDCO20F VARISTOR CC73HCH1H060B HN2S03FE DIODE DZ2J062 M ZENER DIODE CC73HCH1H070B CC73HCH1H040B LC75857W E MOS IC CC73HCH1H050B KTC4075E Y GR TRANSISTOR CC73HCH1H030B KTC4075E Y GR TRANSISTOR CC73HCH1H060B KTC4075E Y GR TRANSISTOR QST7 TRANSISTOR CC73HCH1H060B CK73GB1E105K LTCO14EEBFS8 TRANSISTOR CC73HCH1H180G KTC4075E Y GR TRANSISTOR CC73HCH1H040B CC73HCH1H050B 57 8240 10 HGK 11 HK 12 HGK2 13 HK2 CK73HB1H471K CC73HCH1HOR5B CK73HBIE108K 0 010UF CC73HCH1HOR5B CC73HCH1H101J 100PF CK73HB1H471K CK73HBIH103K CHIPC 0 010UF CK73HB1H471K 0 5 0 5 10UF 470PF 6 0PF 7 0 4 0PF 5 0PF 3 0PF 6 0PF 6 0 1 00 18 4 0PF 5 0PF 470 0 5 0 5 470 470 4 4 CC73HCH1H100B PC 10PF CK73HB1H103K PC 0 010U CC73HCH1H070B CK73HB1H471K CK73HB1H471K PC 470PF CC73HCH1H100B CC73HCH1H100B PC 10PF CC73HC
92. Wide Narrow Maximum Deviation of Analog Wide Narrow is adjusted This item must be adjusted before all adjustment items for tone deviations are adjusted Note Maximum Deviation Analog Narrow must be adjusted before CW ID Deviation Very Narrow is adjusted QT Deviation QT tone deviation is adjusted DQT Deviation DQT tone deviation is adjusted LTR Deviation LTR tone deviation is adjusted DTMF Deviation DTMF tone deviation is adjusted Single Tone Deviation The deviation of Single Tone used in 2 is adjusted MSK Deviation MSK tone deviation is adjusted CW ID Deviation CW ID tone deviation is adjusted CW ID is used to inform the others who is transmitting on a 6 25 kHz spacing channel In FCC rule Analog mode or CW ID is required for each channel spacing Sensitivity 1 Band Pass Filter is adjusted The performance of Receive Sensitivity and unwanted signal rejection are improved This item can be adjusted only in PC Test Mode Sensitivity 2 Band Pass Filter is adjusted The performance of Receive Sensitivity and unwanted signal rejection are improved This item can be adjusted only in PC Test Mode RSSI Reference The minimum RSSI level for scan stop is adjusted Open Squelch The squelch level at level 5 is adjusted Low RSSI High RSSI RSSI display level is adjusted Both Low RSS and
93. between Wide Narrow Very narrow 5 reference level adjustments frequency LCD display in panel tuning mode Tuning point RX MHz 2 RX MHz TX MHz FE Low 450 05000 450 10000 400 05000 400 10000 2199089 Low 467 55000 467 60000 417 55000 417 60000 eoooo Low ee0o00 Low 501 1 0 2 4 Center 485 05000 485 10000 435 05000 435 10000 Cent EM ue c High 502 55000 502 60000 452 55000 452 60000 e e e e High High 519 95000 519 90000 469 95000 469 90000 Narrow Wide Very narrow O O O Very narrow 9 reference level adjustments frequency Tuning K2 point RX MHz TX MHz RX MHz TX MHz Low1 450 05000 450 10000 400 05000 400 10000 Low2 458 80000 458 85000 408 80000 408 85000 Low3 467 55000 467 60000 417 55000 417 60000 1 478 30000 478 35000 426 30000 426 35000 Center2 485 05000 485 10000 435 05000 435 10000 Center3 493 80000 493 85000 443 80000 443 85000 High1 502 55000 502 60000 452 55000 452 60000 High2 511 30000 511 35000 461 30000 461 35000 High3 519 95000 519 90000 469 95000 469 90000 Note This table can be adjusted only in PC Test Mode 37 NX 820H G 820H ADJUSTMENT Adjustment item supplement Adjustment Item Descrip
94. computer using the inter face cable Note You must install the KPG 46U driver in the computer to use the USB programming interface cable KPG 46U 2 When the Power is switched on user mode can be en tered immediately When the PC sends a command the transceiver enters PC mode and PROGRAM is dis played on the LCD When data is transmitting from the transceiver the red LED blinks When data is receiving by the transceiver the green LED blinks Note The data stored in the computer must match the Model when it is written into the EEPROM 5 3 KPG 46A description PC programming interface cable Option The KPG 46A is required to interface the transceiver to the computer It has a circuit in its D sub connector KPG 46A 9 pin case that converts the RS 232C logic level to the TTL level The KPG 46A connects the 8 pin microphone connector of the transceiver to the RS 232C serial port of the comput er 5 4 KPG 46U description USB programming interface cable Option The KPG 46U is a cable which connects to a USB port on a computer When using the KPG 46U install the supplied CD ROM with driver software in the computer The KPG 46U driver runs under Windows Vista or 7 The latest version of the USB driver is available for down load from the following URL http www kenwood com usb com This URL may change without notice 5 5 Programming Software KPG 141D ver 3 00 or later desc
95. data PROGRAM is displayed and green LED blinked When cloning of data is completed the source displays END and the source red LED turned off and the target automatically operates in the User mode The target can then be operated by the same pro gram as the source 5 The other target can be continuously cloned Carry out the operation in step 2 to 4 7 1 Adding the data password If the read authorization password is set in the optional feature menu you must enter the password Source trans ceiver to activate a clone mode You can use 0 9 to configure the password The maxi mum length of the password is 6 digits 1 B Power ON 2 CLONE LOCK is displayed on the LCD 3 If the A and keys is pressed while CLONE is displayed numbers 0 to 9 are displayed flashing When you press the s key the currently selected number is determined If you press the S key after entering the password in this procedure CLONE is displayed if the entered password is correct If the password is in correct CLONE LOCK is redisplayed Cloning cable E30 3382 05 Fig 2 7 2 Flow chart Source transceiver Press B key Power ON for 1 second Is password set Read Authorization password Shows CLONE LOCK Is entered password correct Clone mode 5 8 Firmware Version Information Press and hold the s key while turning the transcei
96. o LTC014EEBFS8 888 2 0402 Over DC Supply 8 228 7 28 195 rotection AVR 50C TH 50 10404 5 0 R407 XC6209B502P G l 403 404 618 m 1 Reverse Current 5 sf DC Switch 60R Prevention 5 6 aT S 7 5 amp 0417 eT 05 5065 DC Switch 50CS 4 Digital GND 33V IR C649 R682 R681 0 R680 5068 0408 1 EMD5 0 01u C648 0 71 R678 R683 R677 w R679 0 1 a 2 0 0 tw EE 2 y 665 67 57 824 1 10 MU NEM mme een J NX 820H 820H SCHEMATIC DIAGRAM H FSXO FSXO PLL MOD CLKXO X2 CLKIN B BU CLKXO A BUS R505 HDS2 CP507 100kX4 100 DSP ST IDINT 7DWUP DRST HRDY 33MDSP SYMTIM MCSCKAF MCDIAF 100 08 0 1 8509 100 510 85121 100 0 541 0 542 Li R517 0 100 15MDSP 33MDSP R518 100 C515 0 10
97. tance Diode PLL f in BPF Tune Transistor Tripler D14 Diode Speed up Transistor 1st IF AMP D15 Variable Capaci tance Diode FM Modulation Transistor DC Switch Over DC Supply Pro tection D16 17 Diode T R Switch Transistor DC Switch 80ANT D101 Zener Diode Over Voltage Protection FET DC Switch SB D102 Diode Voltage Shift Transistor DC Switch 80T D103 Diode Reverse Current Provention Transistor DC Switch 80ANT D104 105 Diode TX Power Detection Transistor DC Switch 50MC D106 Diode Reverse Current Provention Transistor D107 Diode Antenna Switch FET DC Switch 33A 2 D108 109 Diode Over DC Supply Protection Transistor DC Switch 50MC D110 110 Diode Antenna Switch Transistor DC Switch 80T D112 114 Diode Over DC Supply Protection Transistor DC Switch 80ANT D202 207 Variable Capaci tance Diode RX BPF Tune Transistor DC Switch 50CS DC Switch 150C D401 Zener Diode Over DC Supply Protection Transistor DC DC Converter D403 404 Diode Reverse Current Provention Transistor DC Switch 50R D405 Diode Discharge FET DC Switch SB D406 Diode DC DC Converter FET DC Switch System D407
98. x OT osav osx BER S25 Res FIS mls 2p 100p 100p n 843 245 S42 845 puel 652 JMCCSXCN sl C624 p zz 28 5108 scari nascan RIS ale ale 5 o 12 GND sd gt ach E 575 aro Bra STe 552 5 955 355 ES zu 41 R35 STIS ATL E 5 m gde M EG DC Swich eoT oT ST penp o 57 HOST 1 t 238 0014 vi me ol TE TS STF 215 sf WD 49 2 ototo TS fa 0411 5 8 Varso me waq ca MCDICN 5 Ru AGN AGN AGN E 1 8 0 01u 0 01u 0 0 010 171 0678 05 Isa aps D201 203 205 n 2 BUE 25 nsus M des A LTCOIMEEBFS8 PON 5 sg MCSCKCN 21 LA 0705706 Dual BUS Buffer Er ao 1 R394 1312 L315 1316 C360 1203 270n ste RX BPF Tune a 470k eceo7 14 GND 2 50 5 EE 5 Spese usps gt PENE R70L 48206000 3 7 24 n730 C733 Line Protection FNC2 FUNCA DC Switch Hom Alert SON EROR sis 8 aes F 3 T 20 1 2 NS ENS z UIS MCCSO ANN 1 MIC RX Selector BINT RXDO 4 0 01u 180 150n 4 oo 5 5 amp Awe D204206 fn fa
99. 00 6 AS Protection 52 NES nie 25 55 PL NES ES o B30 2337 05 8 8782 jm AGI 117 BIS 555 a STN z 41908 Racor SFS 2225 IZ 525 233540 r N zi 552 creso P a ead rome DC Switch System QTs s vss 5 ss gis 7 5 28 8 z CO uk M 58281 77 s 2 EE KTC4075E Y GR Discharge SIS 4 Sz 1 406 i 6 p Dm GPI06 fea MCDICN ovon 577 SESS mg 25 95 8 DC Switch be oc Swich sis as 259 ass Se N lt coa ode Sua 1 89 Tj nan SZ 5 AUS 9501 r748 98751 48756 C784 als 2 2 2 D505 510 al z 5 assis BER DE SM els 5 9 Sla 1C401 6 1 0 97 100X2 14 0 010 FK330301 VCO MOD VREF 5 2 Line Protection 1 e 02 tit dis 9 5 4 D7 1 XC62098332M G S 9k 0151 216 crios fas T 29 lappe mer open IC701 100k 1006 1 104 2 Over Supply Protection 1 5 228 25 648 Q1 ial 15 FM Modulation 988 STS T M Ree sas
100. 07 The DTMF and MSK base band signals are also generated by the DSP and out put from IC507 LPF 1 701 works as smoothing filter The output level according to the transmit carrier is fine adjusted according to each modulation method 4 3 Drive and Final amplifier The signal from the T R switch D17 is on is amplified by the drive amplifier 0102 to 16 17dBm The output of the drive amplifier is amplified by the final amplifier module 1102 to 45W 5 0W when the power is low The output of the final amplifier module is then passed through the har monic filter LPF and antenna switch D110 D111 are on and directional coupler and is applied to the antenna termi nal 4 4 APC circuit The Automatic transmission power control APC circuit stabilizes the transmitter output power at a predetermined level by detecting the power module output with the direc tional COUPLER and diode detector D104 and D105 The diode detector D104 and D105 applies the detected volt age to the DC amplifier IC103 2 2 The APC circuit is configured to protect over current of the power module due to fluctuations of the load at the an tenna end and to stabilize transmission output at voltage and temperature variations ANT Q101 0102 44521101 28C3356 A R24 25 3357 K2 RA60H40471101 p107 110 111 From SW DRIVE ANT ANT 017 DRIVE FINAL gt SW gt
101. 10 through the hole of the chassis as shown below then con nect the flat cable to connector of the panel assembly Hole of Panel the chassis assembly Chassis Chassis 3 Fit the panel assembly into the two tabs of the chassis top side first Then fit the panel assembly into the two tabs of the chassis bottom side by turning the panel assembly 3 Correspondence when replacing the LED D22 and D23 When replacing the LED D22 and D23 it makes it to length LED LED D22 D23 13mm 12mm NX 820H G 820H CIRCUIT DESCRIPTION 1 Overview The NX 820 is a UHF Mobile transceiver designed to operate in the frequency range of 450 to 520MHz K type or 400 to 470MHz K2 type The unit consists of a receiver transmitter phase locked loop PLL frequency synthesizer base band parts power supply and control circuits 2 Frequency Configuration The receiver is a double conversion super heterodyne using a first intermediate frequency IF of 49 95MHz and a second IF of 450kHz Incoming signals from the antenna are mixed with the local signal from the PLL circuit to produce the first IF of 49 95MHz This is then mixed with the 50 4MHz second local oscillator output to produce the 450kHz second IF The transmit signal frequency is generated by the PLL VCO and modulated by the signal from the DSP It is then amplified and fed to the antenna
102. 104 C136 1 0102 1C102 LPF RX in FWD REV D16 Detector RXLO MIC input SkHz DEV Wide 1 5kHz DEV Narrow at 1kHz MOD Transmitting frequency Center frequency 81 NX 820H G 820H OPTIONAL ACCESSORIES KRA 40 GPS ACTIVE ANTENNA Specifications Supply Voltage ineat eis 3 0 0 3V Current Consumption Typ 19mA Center Frequency 1575 42MHz 30 7dBi Elevation 90 EE 23 7dBi Elevation 10 Output Impedance 2 500 E External View 82 NX 820H G 820H MEMO NX 820H G 820H SPECIFICATIONS GENERAL Frequency 450 520MHz K 400 470MHz K2 Number of Channels 512 Vp rc PEDE 128 Max Channels per Zone 250 Channel Spacing Analog 12 5 25 kHz Digital 6 25 12 5 kHz Operating Voltage 11 6 15 7 Operating Temperature Range 22 F74140 F 30 60 Frequency Stability 1 Antenna Impedance 500 Dimensions W x x 0 Projections not included 6 30 x 1 69 x 5 35 in 160 x 43 x 136 mm WIG 3 03 Ibs 1 38 kg RECEIVER Sensitivity 2 22 4 Digital 6 25k
103. 1628 2624 225 Rea 127 1207 222415 1209 ag A fol col 0224 0202 479 0344 09 B H 8021 SE AR EDI 8020 7521 0 22 1223 R S 820H Component side Layer 1 Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 Foil side 63 10 11 12 13 14 A E H NX 820H G 820H Board TX RX UNIT X57 8240 1X Foil side view J79 0344 09 y Address Ref 1118 C167 R134 2 0161 R136 5 8157 8153
104. 1855 05 093 1857 05 CK73HB1E103K CK73HB1H471K CK73FB1E475K CK73HB1H471K CC73HCH1H1R5B CK73HB CC73HC CC73HC CC73HC CK73HB CC73HC CC73HC CC73HC CC73HC CC73HC CC73H CK73H CC73H CC73HCH1 CC73HCH1 22PF 47 1 5 1 0 100 22 470 1 0UF 1 5PF 3 0PF 47UF 0 022UF 470PF 100PF 1000PF 470PF 40PF 470PF 4 0PF 470PF 1000PF 100PF 470PF 2 0PF 6 0PF 100 3 0 40 5 0 6 0 2 HGK2 HGK2 2 HGK H HGk2 2 HGK H HGK2 HK2 CK73HB1H471K CC73HCH1H120G CC73HCH1H150G CC73HCH1H040B CC73HCH1H080B CC73HCH1H020B CC73HCH1H100B CK73HB1H471K CC73HCH1H130G CC73HCH1H150G CC73HCH1H040B CC73HCH1H080B CC73HCH1H040B CC73HCH1H050B CK73HB1H471K CC73HCH1H100B CC73HCH1H080B CC73HCH1H050B CC73HCH1H050B CC73HCH1H090B CK73HB1H471K CC73HCH1H100B CK73GB1H104K CK73GB1E105K CK73HB1H471K CK73HB1H471K CC73HCH1H070B CK73HB1H471K CC73HCH1H040B CC73HCH1H050B CC73HCH1H020B CC73HCH1H180G CC73HCH1H220G CC73HCH1H070B CC73HCH1H100B CC73HCH1H101J CC73HCH1H030B CC73HCH1H020B CC73HCH1H020B CC73HCH1H080B CC73HCH1H100B CK73HB1H471K CC73HCH1H100B CC73HCH1H060B CC73HCH1H180G CC73HCH1H101J CC73HCH1H101J CK73HB1H471K CK73HB1E103K CK73HB1A104K CC73HCH1H100B CK73HB1H103K CK73HB1A104K CK73HB1E103K CC73HCH1H100B CC73HCH1H101J CC73
105. 3HCH1H101J C620 CC73HCH1H101J C621 CK73HB1H102K 0622 624 CK73HB1H103K C625 CK73HB1A104K 100PF 0771 CK73HB1H122K PC 200PF 100PF C773 CK73HB1E103K PC 0 0100 1000 0774 CK73HB1A104K PC 0 10UF 0 010UF 0775 CC73HCH1H101J PC 00 0 10UF C776 CK73HB1A393K PC 0 039U 3 C3 3 C626 CK73GB1H103K 0627 630 CK73GB1E105K C632 CK73HB1H102K 633 642 CC73HCH1H101J C643 CK73HB1E223K 0 010UF C777 CK73HB1A104K PC 0 10U 1 0UF C778 CK73HB1A105K PC 00 1000 779 780 CC73HCH1H101J PC 00 100 782 CK73HB1A104K CHIP 0 10U 0 022UF C784 CK73FB1A106K CHIP C 3 C3 C644 CC73HCH1H101J C645 CK73GB1H103K C646 CC73HCH1H101J C647 CK73HB1H103K C648 CK73GB1H104K 100PF C786 CK73HB1A104K CHIP C 0 10 0 01007 0788 CK73FB1E475K CHIP C 4 70 100 790 791 CK73FB1A106K CHIP 00 0 01002 C796 CK73GB1E105K CHIP C 00 0 10UF C797 798 CK73GB10224K CHIP C 0 22U 0649 CK73GB1H103K 650 652 CK73HB1A104K C660 CC73HCH1H101J C661 CC73HCH1H470J C680 CK73HB1A104K 0 010UF C801 092 0875 05 ELECTRO 47UF 0 10UF C802 CK73HB1H102K CHIP C 000P 100PF C803 804 C92 0906 05 ELECTRO 330UF 47 805 CK73HB1H102K CHIP 000 0 10UF C806 CK73GB1E105K CHIP OUF C701 CK73HB1H682K C702 CK73HB1H102K 0704 CK73HB1A105K C705 CC73HCH1H470J C706 CK73HB1A104K 6800PF C807 CK73HB1C473K CHIP C 0 047UF 1000PF C808 CK73HB1A683K CHIP C 0 068U 1 00
106. 3K CK73HB1H471K CK73HB1H103K CK73HB1H103K C92 0968 05 CK73HB1H471K CK73HB1H103K CK73HB1H103K CK73GB10225K CK73GB1H104K CC73HCH1H101J CK73HB1H103K CC73HCH1H101J CK73GB1E105K CK73HB1H102K CC73HCH1H101J CK73HB1H103K CK73GB1H473K CK73HB1A104K CK73HB1H471K CK73FB1E475K CC73HCH1H101J CK73GB1H104K CK73FB1E475K CK73GB10225K CK73HB1H103K CK73FB1E475K CK73GB1H104K 092 0875 05 CK73GB10225K CK73HB1H103K CK73GB1E105K CK73HB1H103K CK73GB1E105K CK73HB1H103K CK73GB1E105K CK73FB1A106K CS77LA1C4R7M 10 00 10 01 0 1 00 0 10 1 00 0 010 4TPF U F U 0 010U 100PF 0 5PF 10PF 0 010 22PF 0 010U 0 010U 470PF 0 010U 0 010U 4700 470 0 0100 0 0100 2 2UF 0 10UF 100PF 0 010UF 100PF 1 0UF 1000PF 100PF 0 010UF 0 047UF 0 10UF 470PF 4 7UF 100PF 0 10UF 4 7 2 2 CK73HB1H103K CK73GB1C225K CK73HB1H103K CC73HCH1H101J CC73HCH1H101J CK73HB1A105K CK73GB1E105K CC73HCH1H101J CK73HB1A105K CK73GB1E105K CK73HB1H103K CK73HB1A105K CC73HCH1H101J CK73HB1H102K CK73GB1E105K CK73HB1A104K CK73GB1H104K CK73HB1A104K CK73GB0J106K CK73HB1A105K CK73HB1A104K CK73HB1A104K CK73HB1A104K CK73HB1A104K CC73HCH1H101J CK73HB1A104K CK73HB1A105K CK73HB1A104K CK73HB1H103K CK73GB0J106K CK73HB1A104K CK73HB1H272K CK73HB1A104K CK73HB1H102K CK73HB1A104K CK73HB1H103K CK73HB1A104K CK73FB1A106K CK73HB1H103K CC73HCH1H101J CK
107. 445HFV Rime 3 S28 539 A ele 2 2 5 CPL sae DC Sven LTCOl4EEBFSB FS ash Do3 Dal leg 4 2 5 51212 TC7WT126FU F 5 cri SN 12 25 9 2 Tata 278 gt 5 BUCNT2 5 20 LEDBE 4 sls ET 0402 G2 Ap HI AIS 8 missas 3 2 D ik 1 150k 935 12516 b z R350 pra 5 3 815 0 Reverse T lt oui iii De SMN 338 25A1955A F 05 ane PTT SRAM 5 ca 8552 47k 255 ere ADM202EARNZ cg mim T ATIT 9 mis 15 m JPTT x 1H 1 21 LCDCL LC75857W E Over DC Supply OTR AVRGOCY al ES Don A19 120 1 1 5 NCL R553 47k D lt lt D 10u OTs RX SUM AMP LPF RX C786 QuADi 2 55 0511 Bex Protection Ld P 1501 04 1 sier RTSO 2 Iu 25 AMSW Bec isie 150 5 4 55 Ez DB25310 225 651 22 LCDDO A20 ar 005 R581 R584 C680 IF DET RX SUM i aff 627 gt 5 XC6209B502P G D3 9 BU7462NUX C70 R703 0 1u 2 RTS FNC3 a L3 ols mea 100X4 R407 soc Gs ADI Dto My voice R826 R827 2 slzel gis E 2 23 GND ave
108. 5 Preset SENS1 Center 117 Fixed H SENS1 High 155 Fixed H SENS1 High 192 Fixed 3 Sensitivity2 adjust This adjustment can be performed only PC test mode 1 Adj item Sensitivity 2 2 Adj item Low Low Center High High Press Apply All button to store the adjustment value 550 load ANT Ext SP connector PC test mode 4 gt Write the value as follows L SENS2 Low 80 Preset SENS2 Low 119 Preset C SENS2 Center 158 Preset SENS2 High 190 Preset 52 High 225 Preset K2 L SENS2 Low 59 Preset SENS2 Low 98 Preset C SENS2 Center 137 Preset SENS2 High 179 Preset SENS2 High 209 Preset Readjustment method 1 If the sensitivity is less than 118 5dBm decrease the digit of O SENS2 each channel to get 12dB SINAD SSG output 118 5dBm 0 266uV Mod 1kHz 1 5kHz Readjustment method 2 K If the sensitivity is still NG for fH by using method 1 change the digit of H SENS2 from 225 to 240 and carry out the automatic ad justment for SENS1 SSG output 90dBm Mod 1kHz 1 5kHz and then decrease the digit of H SENS2 to get 12dB SINAD SSG output 118 5dBm 0 266uV Mod 1kHz 1 5kHz Readjustment meth
109. 578 7 5 ol ele TSN RIZR OTS M 5 SJT L103 3555 9 33858N 10 5 5844 1 TIS 88 I x STR ST 2 rk 2 oTS did 5 her ar 35 v E 5 Ge T 875 15 NN 12 E o usa 80T R138 10k kC145 t 4 7 1C103 2 NJM12904RB1 Transient One Voltage limiter 890102 8 1 4 155 uL OP 470p D107 R170 R141 D113 0114 K RN142S 10 e x 555 i Q202 EX R218 C251 NESG240034 C263R290 254 C291 C289 7p sl 100P N 2 o 3 e a N Om AS Om af TOT s 0204206 5 tu 12 volve R SAS N28 525 WAS aye 4 2 Ex 71V 1 52 La abe 1 6 25 5 41 fH 9 36V 892 STS o RKP351KW 1P2 100k 0105 Switch Antenna Switch FK330301 H L Power 80ANT OV T 0 80V 228 N C297 c296 100 Slo 2 gto Fr
110. 6 2 c Dz2 Q56 M 28 eces MIC er zi pi DC Switch SOMC J CP502 0016 m o zi B 100 2 ole IC103 46N llo 23v 5 2 aun pi cria 41 5 z gt lu n 1708 6 1 els sis gis 84 mE 2 M MBL oe 0407 C502 pus 18 525 4 Ix BUCNT2 100 2 6 m ee OFF p m o 470p MBL a 100p MIC B c PKd30301 CN418 25 08 SDA 181 NIS 228 Erud 8668 100 FNCG 20 Transient ix Slx zie 2 NY 4 2 dioi sis jus 218 S Sig 4 Voltage limiter 2 P i 228 OT 239 4 4 1 555 DC SWR SONCI 55 10002 P dois hag spoo 5 I 470 635 0408 409 sao 2i gt v F ET 5 CPS15 100p GND SURGE VOLTAGE 4061 ve for 116 020 Pos ENG 5 8413 5 1 1 DCDC Converter D409 4 R435 222 ME 268130 42 3 bs 4 20 58 7 PROTECTION PROTECTION 8412 R43 15M 1 502 2n KEY m Current Prevention 2551 JEVCS 5 2 5 2 m 1 t TERA p P ENC2 DC Switch 50C 5 feces ma MBL AN TAUTA ry 0825310 0825310 0 m 5 gt R 4 59V 5 44 Anz __ 03 512 GPlo2 156 gt el E 2 gt 39 R506 100 5 T
111. 62NUX R2A20178NP TC7W53FK F LA4600 TC7WT126FU F TC7WH126FU F LTCO14EEBFS8 25 648 2SC5383 T111 MCH3914 8 H EM6M1 SSM3J15FS 2SC5108 Y F 2SC3356 A R24 2SC3357 A FK330301 EMD5 3SK318 NESG240034 2SC5108 Y F 2SC4215 F Y LTCO14EEBFS8 2SA1955A F MTM981400BF 2SA1955A F LTCO14EEBFS8 FK330301 EMD5 EM6M1 2SA1955A F LTCO14EEBFS8 EMD9 2804738 GRJF 2SA1832 GR F EMD5 LTCO14EEBFS8 FK330301 LTCO14TEBFS8 MTM981400BF LTCO14TEBFS8 FK330301 KTC4075E Y GR 2SA1832 GR F 2804738 GRJF SSM3J15FS LTCO14EEBFS8 SSM6N37FE ERTJOEV104H ERTJOEV104H ERTJOEV104H ERTJOEV104H ERTJOEV104H 02 3768 05 MOS IC MOS IC DAC IC MOS IC BI POLAR IC MOS IC MOS IC TRANSISTOR FET TRANSISTOR FET FET FET TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR TRANSISTOR FET TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR FET TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR FET THERMISTOR 100K THERMISTOR 100K THERMISTOR 100K THERMISTOR 100K THERMISTOR 100K GPS MODULE HGK HGK2 HGK2 HK2 HGK HK HGK HGK2 If a part reference number is listed in a shaded box that part does not come with the PCB Note 1 This part cannot be replaced Therefore this part is not supplied as a service part NX 820H G 820H
112. 73HB1H103K CK73HB1A104K CK73HB1A104K CK73HB1H103K CK73HB1A105K CK73HB1H103K CK73HB1A104K CK73FB1A106K CC73HCH1H030B CC73HCH1H101J CK73HB1A104K CK73HB1H103K CK73HB1A105K CK73HB1A104K CK73HB1H103K CK73HB1A105K CK73HB1H103K CK73HB1H103K CC73HCH1H101J CK73HB1H102K 00 60 Py 060060 0 0100 2 2UF 0 010UF 100PF 100PF 1 0UF 1 0UF 100PF 1 0UF 1 0UF 0 010UF 1 0UF 100PF 1000PF 1 0UF 0 10UF 0 10UF 0 10UF 10UF 1 0UF 0 10UF 0 10UF 0 10UF 0 10UF 100PF 0 10UF 1 0UF 0 10UF 0 010UF 10UF 0 10UF 2700PF 0 10UF 1000PF 0 10UF 0 010UF 0 10UF 10UF 0 010UF 100PF 0 010U 0 10UF 0 10UF 0 010U 1 00 0 01007 0 1002 10UF 3 0PF 100PF 0 10UF 0 010UF 1 0UF 0 10UF 0 010UF 1 0UF 0 010UF 0 010UF 100PF 1000PF NX 820H G 820H PARTS LIST TX RX UNIT X57 8240 XX Ref No Address Parts Description Dosti Ref No Address Parts No Description n 100PF C762 CK73HB1H103K PC 0 0100 100 765 CC73HCH1H220J PC 22PF 47 766 767 CK73GB0J475K PC 4 7UF 100PF C769 CK73HB1E103K PC 0 0100 0 01007 C770 CK73HB1A104K PC 0 10UF C605 CC73HCH1H101J C607 CC73HCH1H101J C609 611 CC73HCH1H470J C612 CC73HCH1H101J 0613 CK73HB1H103K 614 618 CC7
113. 74HB1J104J L34 4667 05 AIR CORE COIL 9 5T P514 RK74HA1J104J L34 4694 05 AIR CORE COIL 1 5T P515 RK74HA1J101J P516 RK74HB1J101J L34 4667 05 AIR CORE COIL 9 5T P701 RK74HB1J101J L34 4912 05 AIR CORE COIL 1T L34 4669 05 AIR CORE COIL 2 5T 703 704 RK74HB1J104J L40 2275 92 SMALL FIXED INDUCT P705 706 RK74HA1J104J L40 1575 71 SMALL FIXED INDUCT RK74HB1J102J RK73HB1J000J L92 0138 05 CHIP FERRITE RK73HB1J000J L41 5685 39 SMALL FIXE L41 2785 39 SMALL FIXE 1 RK73HB1J000J L40 1575 71 SMALL FIXE RK73HB1J100J L40 1875 71 SMALL FIXE 1 RK73HB1J683J RK73HB1J473J L40 3975 71 SMALL FIXE 1 RK73HB1J100J 140 4775 71 1 141 2778 14 RK73HB1J102J L41 3378 14 SMALL FIXE RK73HB1J104J L41 6878 14 FIXE 1 RK73HB1J102J RK73HB1J000J L41 8278 14 FIXE 1 RK73HB1J470J L41 2778 14 FIXE 1 141 3378 14 1 RK73HB1J181J PR L92 0138 05 ERRIT RK73HB1J100J PR L41 1878 14 FIXE RK73HH1J391D PR RK73HB1J104J PR L41 2278 14 FIXE 1 RK73HB1J102J PR L41 2778 14 FIXE 1 141 3378 14 140 1875 92 140 2763 92 P COM 10 100 100K 100 P COM 100 P COM 100 100 100 P COM 100 100 100 100 HIP COM 100 P COM 100 P COM 100 D OOGO P COM 100K P COM 100K P COM 1 0K PR 0 HGK HK PR 0 HGK2 HK2
114. 7GUKW1 2 997 ISQDAC Anco 1 03 2 0 2 2 5 3 F1 DRST FCDADC IFADCP IFADCN IFVR 2 DGND3 DGND2 DGND1 DVDIo7 DVDlo amp DVDIo5 DVDIo4 DVDIo3 DVDIo2 DVDIo1 DVDD10 DVDD9 DVDD8 DVDD7 DVDD6 DVDD5 DVDD4 DVDD3 DVDD2 4 ovon GPlot1 GPlo10 GPlo9 GPlo amp GPlo7 GPlo amp GPlo5 GPlo4 GPlo3 GPlo2 GPlot GPIo0 SIMRST SIMCK SIMDT SYMTIM FSDET TXRVE TRAMP TMoD PSTPA PSTIF PSTPLL RXRVE RXSLT PSRRF PSRIF PSRPLL RSSIT VFRM VoINT MCo2 MCCS2 MCCK2 1 MCCSO MCo0 MCIO AGCDAC 10u R581 100k L C560 3p 12 C565 566 6 567 0 1u 568 0 01u 140569 H14 E13 0 1u 0 1u 0 1u 0570 810 7 572 4573 40574 0 1u tow 9057 1 DC Switch System 576 90577 0 1u 0 01u Q501 FK330301 R603 470k 5 ISAVE ASTSW 8504 100k CP506 BUCNT2 BUCNT 100kX4 MKEYO EMG OVRB 15 BINT ISYMTIM FSDET TXC DSW GLED RLED 599 33M 100k MM2
115. E Did NT 8525 470k 5 8 8 8 5 532 RST 33 B BUS SCHEMATIC DIAGRAM NX 820H G 820H FSXO TX RX UNIT X57 8240 1X 0 v3 esso 79 11001 vH 113 VARE 818 410 810 MCLK 18 432MHz SM5023CNDH G LIA BLA tn en Buffer AMP Clock ev 53 99 915 815 814 9 LLLI ik vr 5 9 900AV SEON 800AV l600AV nro 0109AV LON SON Z N 69N ZION ELON ION SION 9 ION ZION BLON IZON ISZON 420 20 XTALI R556 IXTALO 22 10 12 TD DSPCK GPSDET ek GPSDET lUSRCKI 2 JHINT ASIC 1C507 2 Apps 004 Apps Ape 007 Apa apps 0010 0011 40012 40013 0014 0015 016 17 0019 ADD20 04 3 lappe H18
116. EXPLODED VIEW 30 2605 48 2 6 5 67 3008 48 87 2608 48 2 6 8 714 d RA TX RX moos Et ELSE 14 BA Er x 9 S ap ae R358 A Pei A ae G 5 20 10 A 2 Caution label To 702 Model name plate Parts with the exploded numbers larger than 700 are not supplied 29 If a part reference number is listed in a box on the exploded view of the PCB that part does come with the These parts must be ordered separately NX 820H G 820H PACKING 706 Pamphlet 705 Protection bag 8 Instruction Manual B62 2421 00 18 Fuse Blade type x 2 47 Bracket F52 0024 05 P d J29 0726 03 40 Packing Fixture H12 4345 12 41 Packing Fixture H12 4346 1 6 12 DC cord assy E30 7523 55 50 Screw set N99 2039 05 2 52 Microphone KMC 35 T91 0639 55 42 carton case H52 2563 02 43 Holder MIC J19 1584 15 9 30 Parts with the exploded numbers larger than 700 are not supplied NX 820H G 820H TROUBLE SHOOTING Fault Diagnosis of the BGA Ball Grid Array IC B Overview A flowchart 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 1C507 DSP C502
117. GND GND MIC HOOK PTT MKEY POWER 30 DISPLAY UNIT X54 3830 10 SP 5 1 4 SEG 1 42 DM HOOK MIC PTT GND MBL AF AMP LA4600 IC714 0 GATEBIAS POWER MODULE IC102 INT SP LCD B38 0936 05 Ji TTTTTT 1 1 66 SCHEMATIC DIAGRAM NX 820H 820H 1 iL ia lt lt lt R 13 6V 423 T 45W 13 0v DC DC Converter 50M 1 405 LT1616ES6 PBF BATTERY E lt a a 5 sko OLE OA 7 hi DC DC 50 T age STR 503 I 27 9 5 02 818 545 gle 9 0407 548 0985 Jet 5205 30 2 I Surge Reverse sts K Protection Current 315 8 Prevention
118. H TO TX RX UNIT 30pin FLAT CABLE Connector CN1 8pin MODULAR JACK J1 DISPLAY UNIT X54 3830 10 LCD DISPLAY LC75857W E soc 500 gt LCDDO LCDDI COM 1 4 LODGE SEG 1 42 LCDCL LED INDICATOR D22 Q10 B30 2321 05 BOWER LTC014EEBFS8 500 DC SW gt EMG x LCD Driver D23 BLED 830 2151 05 KMO1 KTC4075E Y GR KMO2 gt SP SW L SP i RLED gt BLED KTC4075E Y GR gt RLED DC SW KMI3 GLED GLED MBL meL 58 Q9 0877 011 4075 027 022 062 SB DC SW 1 41 i MBL LCD BACKLIGHT KEY BACKLIGHT HOCK 4 LA 05 09 B30 2337 05 ME D11 D24 B30 2337 MIC dg 30 2337 05 KTC4075E Y GR BLC DC SW lg 38 lg MBL e OVER VOLTAGE 500 2 DA3S101F ENN KE a E rt E E eu mf EEE E EE ENN KMO1 KMO2 MKO3 KMI1 2 Ek rn lt lt SSS lt lt SS lt lt lt 3 80 NX 820H G 820H LEVEL DIAGRA
119. H ADJUSTMENT LED indicator Red LED Lights during transmission Green LED Lights when there is carrier LCD display in panel test mode Power ON Market code Frequency range F1 450 520 2 F2 400 470 2 25 Low power Mid power Squelch level Channel No Signaling No AW Analog wide mode AN Analog narrow mode NN NXDN narrow mode NV very narrow mode 36 Frequency and Signaling The transceiver has been adjusted for the frequencies shown in the following table When required readjust them following the adjustment procedure to obtain the frequencies you want in actual operation Test frequency RX MHz TX MHz RX MHz TX MHz 485 05000 485 10000 435 05000 435 10000 450 05000 450 10000 400 05000 400 10000 519 95000 519 90000 469 95000 469 90000 485 00000 485 00000 435 00000 435 00000 485 20000 485 20000 435 20000 435 20000 485 40000 485 40000 435 40000 435 40000 TX None None None 100Hz Square Wave LTR Data 0 GOTO 12 HOME 12 10 47 25 LTR Data 0 GOTO 12 HOME 12 10 47 25 67 0 2 67 2 151 4 2 151 4 2 QT 210 7Hz QT 210 7Hz QT 254 1Hz QT 254 1Hz D023N
120. H1H030B CK73HB1H103K PC 0 010U CK73HB1H471K CC73HCH1H050B PC 5 0PF HGK HK CC73HCH1H070B PC 7 0 HGK2 HK2 CK73HB1A104K CC73HCH1H060B CC73HCH1H101J PC 100PF CC73HCH1H070B CK73HB1A104K PC 0 10UF CC73HCH1H100B CC73HCH1H101J PC 100PF C93 0787 05 CC73HCH1H101J PC 100PF CC73HCH1H101J PC 100PF CK73HB1H471K CK73HB1H103K CS77MA1VR15M PTNTL 0 15UF CK73HB1H471K CK73GB1E105K PC 1 0UF CK73HB1H471K CC73HCH1H470J PC 47 CK73FB1E475K CS77BA1D100M PTNTL 10 CK73HB1H103K PC 0 010UF CC73HCH1H060B CK73HB1H471K C93 1906 PFILM 0 047UF CC73HCH1H101J CC73HCH1H101J PC 100PF CC73HCH1H101J CC73HCH1H330J PC CK73HB1H471K CK73HB1H471K PC 470PF CK73HB1H471K 470PF CC73HCH1H060B CC73HCH1H060B CC73HCH1H050B 5 0PF CC73HCH1H070B CC73HCH1H030B 3 0PF HGK HK CK73HB1H CC73HCH1H040B 4 0PF HGK2 HK2 CC73HCH1H220J CC73HCH1H050B 5 0PF CC73HCH1H100B 10PF HGK2 HK2 CC73HCH1H470J CC73HCH1H060B CC73HCH1H180G 18PF HGK HK CC73HCH1H070B CC73HCH1H151J 150PF HGK2 HK2 CC73HCH1H101J CC73HCH1H271J 270PF HGK HK CC73HCH1H221J CC73HCH1H271J 270 HGK2 HK2 CK73HB1H471K 470PF HGK HK CK73HB1H471K 470PF HGK HK CK73HB1H471K 470PF HGK2 HK2 CC73HCH1H050B 5 0PF HGK2 HK2 CK73FB1H471K 470PF CC73HCH1H050B 5 0PF CC73HCH1H101J 100PF HGK2 HK2 CC73HCH1H080B 8 0PF HGK2 HK2 CS77LA1C4R7M 4 7UF 7 0 470 10 470 0 10UF 6 0PF 7 0 HGK HK 10PF HGK2 HK2 0 1UF GG 470 0 010 470
121. HCH1H101J CC73HCH1H151J CC73HCH1H330G CC73HCH1H680G 470PF 12PF 15PF 4 0PF 8 0PF 20 10 470 13PF 15PF 4 0PF 8 0PF 4 0PF 5 0PF 470PF 10PF 8 0PF 5 0PF 5 0PF 9 0PF 470PF 10 0 10UF 1 0UF 470PF 470PF 7 0PF 470PF 4 0PF 5 0PF 2 0PF 18PF 22PF 10 100 3 0PF 2 0PF 2 0PF 8 0PF 10PF 470PF 10PF 6 0PF 18PF 100 100 470 0 010 0 100 0 010 0 100 0 010 00 00 50 68 UJ UJ 00 00 lt UJ G UJ UJ AX 0 UJ UJ UJ 00 UJ UJ UJ UJ UJ G G AX UJ UJ lt lt HGKH HGK2 HGKH 2 HGK H HGK2 HGK H HGK2 HGK2 HGK H HGK H HGK2 HGK2 HK2 HGK HK HGK2 HK2 HGK HK HGK2 HK2 HGK2 HK2 HGK H HGK H HGK2 HGK H GK H GK2 GK2 HK2 GK HK GK2 HK2 HGK2 HK2 GK HK NX 820H G 820H TX RX UNIT X57 8240 XX Address Parts No Description PARTS LIST Desti nation Address Parts No Description Desti nation CC73HCH1H100B CK73HB1A104K CK73HB1A104K CK73HB1A104K CK73FB1A106K CK73HB1A104K CK73FB1A106K CK73HB1A104K CK73HB1H103K CK73HB1A104K CK73HB1A105K CK73HB1A104K CK73HB1A105K CK73HB1H103K CC73HCH1H470J CK73HB1H103K CC73HCH1H101J CC73HCH1HOR5B CC73HCH1H100B CK73HB1E103K CC73HCH1H220G CK73HB1E103K CK73HB1H10
122. Hz 3 0 20uV Digital 912 5 2 3 BER 0 28uV Analog 1288 SINAD 0 25 SEE Analog 925 2 800 Analog 912 5kHz 70dB Intermodulation Distortion Analog 25 2 7588 Analog 912 5kHz 75dB Spurious Response Analog 854 Au dio Distortloni eitis Less than 3 Audio Output su ricca critt 4W 40 TRANSMITTER RF 1 45W Spurious Response 75dB FM Hum and Noise Analog 925kHz 50dB Analog 12 5kHz 45dB 16 14K4F1D 11 8K30F1E 8K30F1D 8K30F7W 4KOOF1E 4K00F1D 4K00F7W 4K00F2D Analog measurements made per TIA EIA 603 and specifications shown are typical JVC KENWOOD Corporation reserves the right to change specifications without prior notice or obligation JVCKENWOOD Corporation 3 12 Moriyacho Kanagawa ku Yokohama shi Kanagawa 221 0022 Japan Kenwood U S A Corporation P O BOX 22745 2201 East Dominguez Street Long Beach CA 90801 5745 U S A Kenwood Electronics Canada Inc 6070 Kestrel Road Mississauga Ontario Canada L5T 158 Kenwood Electronics Deutschland GmbH Rembr cker Str 15 63150 Heusenstamm Germany Kenwood Electronics Belgium N V Leuvensesteenweg 248 J 1800 Vilvoorde Belgium Kenwood Electronics France S A
123. IST TX RX UNIT X57 8240 XX Address Parts No Description Address Parts No Description RK73HB1J183J 18K RK73HB1J000J RK73HB1J104J 100K RK73HB1J102J RK73HB1J000J 0 RK73HB1J000J RK73HB1J000J 0 RK73HB1J103J RK73GB2A000J 0 RK73HB1J274J 0 1 0K 0 10K 270K RK73HB1J102J RK73HB1J103J RK73HB1J334J RK73HB1J000J RK73HB1J561J RK73GB2A100J RK73HB1J000J RK73HB1J474J RK73HB1J000J RK73HB1J000J 10K 0 10 470K 0 RK73HB1J332J RK73HB1J272J RK73HB1J000J RK73HB1J220J RK73HB1J183J RK73HB1J104J RK73GB2A331J RK73GB2A000J RK73HB1J183J RK73HB1J101J RK73HB1J100J RK73HB1J104J RK73HB1J000J RK73HB1J000J RK73HB1J102J RK73HB1J000J RK73HB1J473J RK73HB1J101J RK73HB1J153J RK73HB1J000J RK73HB1J274J RK73HB1J104J RK73HB1J103J RK73HB1J000J RK73HB1J104J RK73HB1J474J RK73HB1J223J RK73HB1J104J RK73HB1J272J RK73HB1J104J RK73HB1J000J RK73HB1J000J RK73HB1J103J RK73HB1J473J RK73HB1J104J RK73HB1J000J RK73HB1J000J RK73HB1J101J RK73HB1J104J RK73HB1J000J RK73HB1J333J RK73HB1J103J RK73HB1J221J RK73HB1J104J RK73HB1J394J RK73HB1J472J RK73HB1J222J RK73HB1J332J RK73HB1J221J RK73HB1J102J C C ey RK73HB1J103J RK73HB1J220J RK73HB1J181J RK73HB1J153J RK73HB1J471J RK73HB1J220J RK73HB1J103J RK73HB1J392J RK73HH1J274D RK73HB1J474J RK73HH1J104D RK73HB1J000J RK73HB1J103J RK73HB1J474J RK73HB1J472J RK73HB1J102J
124. J 180K 47K HGK2 HK2 HGK HK HGK HK HGK2 HK2 HGK HK HGK2 HK2 RK73FB2B821J RK73HB1J221J RK73HB1J153J RK73HB1J103J RK73HB1J123J RK73GB2A121J RK73HB1J823J RK73GB2A151J RK73HB1J104J RK73HB1J103J RK73GB2A151J RK73HB1J333J RK73HB1J000J RK73HB1J104J RK73GB2A100J RK73HB1J393J RK73HB1J104J RK73HB1J000J RK73HB1J103J RK73HB1J124J RK73HB1J102J RK73HB1J000J RK73HB1J223J RK73HB1J333J RK73HB1J000J RK73HB1J104J RK73HB1J153J RK73EB2E241J RK73GB2A000J R92 1061 05 RK73GB2A221J RK73HB1J000J RK73HB1J333J RK73HB1J000J RK73HB1J103J RK73HB1J471J RK73HB1J821J RK73HB1J473J RK73GB2A120J RK73GB2A5R6J RK73HB1J470J RK73HB1J681J RK73HB1J472J RK73HB1J151J RK73HB1J104J RK73HB1J184J RK73HB1J104J RK73HB1J224J RK73HB1J104J RK73HB1J000J RK73HB1J000J RK73HB1J000J RK73HB1J274J RK73HB1J104J RK73HB1J103J RK73HB1J103J RK73HB1J274J RK73HB1J104J RK73HB1J102J RK73HB1J470J PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR 820 220 15K 10K 12K 120 82K 150 100K 10K 150 33K 0 100K 10 39K 100K 0 10K 120K 1 0K 0 22K 33K 0 240 0 MPER REST HGK2 HK2 HGK2 HK2 HGK HK HGK2 HK2 HGK HK NX 820H G 820H PARTS L
125. K73GB2A101J RK73HB1J123J CHIP R RK73HB1J471J RK73GB2A000J CHIP R RK73HB1J101J RK73HB1J104J CHIP R RK73GB2A471J RK73HB1J102J CHIP R 2 RK73HB1J104J RK73HB1J102J CHIP R HGK HGK2 RK73HB1J105J RK73HB1J472J CHIP R RK73GB2A000J 7 102 CHIP R RK73HB1J000J 7 123 CHIP R RK73GB2A000J 7 103 CHIP R B B RK73HB1J473J 7 102 CHIP R RK73HB1J103J RK73HB1J391J CHIP R RK73HB1J223J RK73HB1J123J CHIP R RK73HB1J103J RK73HB1J332J CHIP R RK73HB1J102J RK73HB1J222J CHIP R B B RK73 102 RK73GB2A000J CHIP R RK73 1039 RK73HB1J123J CHIP R RK73 222 RK73HB1J332J CHIP R RK73 5639 RK73HB1J000J CHIP R RK73 1539 RK73HB1J103J CHIP R RK73 683 RK73HB1J823J CHIP R RK73 8239 RK73HB1J683J CHIP R RK73 182 RK73HB1J101J CHIP RK73 3339 RK73HB1J102J CHIP R RK73 104J RK73HB1J100J CHIP R HGK HGK2 RK73 5639 RK73HB1J562J CHIP RK73 104J RK73HB1J332J CHIP R RK73 4739 RK73EB2E100J CHIP R HGK HGK2 RK73 223 RK73HB1J000J CHIP R HGK HGK2 RK73 104J RK73HB1J101J CHIP R RK73 334 RK73HB1J223J CHIP R RK73 104J DZ2J091 M ZENER DIODE RK73 473 1SV323F VARIABLE CAPACITANCE DIODE RK73 3939 15 282 VARIABLE CAPACITANCE DIODE RK73 4739 1SV278F VARIABLE CAPACITANCE DIODE RK73 103J DA2S101 DIODE RK73 334J RKS151KJ DIODE RK73 470J DZ2J056 M ZENER DIODE RK73 332 DA3S101F DIODE HGK2 HK2 RK73 471J RKS151KJ DIODE RK73 104J HSB88AS E DIODE RK73 103J
126. L110 m 0801 AS 8 E CN415 po 521 Rea 5802 3 L2 CN414O 5 8 5 8 8 5 8 s 5 8 CN112 D111 5 N411 Xy Xy x Y 8 H CN111 1117 4 664 Ress 2 Resa mess 632 2169 B 1 402 T 345 gt 0709 mAT R796 R797 5 B 4 FAR La BE s 4 1 378 Ez wa 1 R82 RI 825 E I 745 8751 756 E 2 Rd P ledere mpm EE aaa KS mm 19703 735 B ies ET EEE 1111 gt gt m Rag lt 26 022 11111 IS 07031774 Ro 24 Leg pilo 8734 2728 H cr z E pio CN701 E C fi 451 8 8728 F R83 E 723 8 5 725 24 H n cai S cPjo4 rm 1 4 a on 7 8 aid E Hd 52 m 5701 Ux 7 Rar I Sja 707 Ly ls RIS 021 EF R679 S 6 BIS 74 RIZ 8 E R33 R682 Ez 229 zog 8 TTT m E c29 Eel 65 EN 9 CN426 CN418 S CN 40 CN4200 72 R30 R223 8724 270 C39 2206 221 R218 E E C707 C703 R74 c32 R81 _ gt 678 510 EIE E rr
127. M Receiver Section RF Center Frequency IF1 49 95MHz 4 2 450 2 119 048 119 54 114 048 121 048 107 5dBm 63 5dBm ENA Mixer MCF Ro FM IC CF ASIC 2 LE 26 216 TULIT 1 47 34 0201 1 0347 0843 10507 4 AF 1 2 186 2mVrms 186 2mVrms 226 1mVrms 101 2mVrms 21 5mVrms DAC i ASIC SUM N Amp D w 1 3 24W 746 C704 C806 10507 10711 10711 10712 10714 make measurements in the AF section connect the AC level meter ANT input 53dB 1kHz FM DEV Wide In the RF section use a 1000pF coupling capacitor The display shows the SSG input value required to obtain 124 SINAD without local level Transmitter Section AF 1kHz k K 262 0mVrms W K 256 8mVrms W K 64 0mVrms W 130 9mVrms N 128 3mVrms N 32 0mVrms N K2 349 0mVrms W K2 345 0mVrms W K2 74 9mVrms W 5 2mVrms 174 4mVrms N 172 3mVrms N 39 9mVrms N at MIC terminal IC502 74 6mVrms 57 8mVrms DSP AW ASIC AW 774 706 55 IC703 IC507 IC701 RF Center Frequency k K 1 4dBm K 4 2dBm K 13dBm K 32dBm K2 1 4dBm K2 1 4dBm K2 13dBm K2 32dBm Final AW T RSW Pre Drive Drive 2 SW CPL wo H 1 6 71 1 EN 17 0110 C89 Q101 C
128. N When a new printed circuit board is used the KENWOOD ESN changes as does the Transceiver Information display of the KPG 141D but this does not have any effect on the operation of the transceiver If changing to the original ESN please contact our service center Cut line ESN Label S NO IIII Z IIIAGIIIIII NXXXXXXXXXXXX 7 O I IIOIWWIGIIIIIIIIWII2I IG Remove the KENWOOD ESN NXDN ESN MPT ESN label along the cut line KENWOOD NX 720HG VHF DIGITAL TRANSCEIVER K 0 13 6 13A 1234567891012 UU THIS DEVICE COMPLIES WITH PART 3 82700001 BARMFUL INTERFERENCE M1234567890 OY JVC KENWOOD Corporation 55 N12456789012
129. Points to be checked Confirmed voltage POWER R690 ON OV The ignition key is kept ON OFF 3 3V Points to be checked Confirmed voltage When an abnormal IGN C633 Q504 Collector Side ON 0V value is confirmed OFF 3 3V Checking the output signal When a normal from the ASIC value is confirmed When an abnormal Points to be checked Normal voltage value is confirmed FRST R516 3 3V When a normal value is confirmed Checking for an abnormal point 33M has an abnormal voltage ASIC Remove L508 to check the voltage of the 33M If the voltage becomes normal the ASIC is broken DSP Remove L503 to check the voltage of the 33M If the voltage becomes normal the DSP is broken FLASH Remove L501 to check the voltage of the 33M If the voltage becomes normal the FLASH is broken SRAM Remove L504 to check the voltage of the 33M If the voltage becomes normal the SRAM is broken 15M has an abnormal voltage ASIC Remove L510 to check the voltage of the 15M If the voltage becomes normal the ASIC is broken DSP Remove R505 to check the voltage of the 15M If the voltage becomes normal the DSP is broken 33A has an abnormal voltage ASIC Remove R571 to check the voltage of the 33A If the voltage becomes normal the ASIC is broken If the voltage is not corrected there is a problem other than the BGA parts Remove the R556 If it oscillates normally the DSP and ASIC may be broken Remo
130. RSS must be adjusted The curve data of RSSI level is applied Tight Squelch The squelch level at level 9 is adjusted NX 820H G 820H ADJUSTMENT B Adjustment item and Adjustment range AW AN NN NV NXDN Very m Adjusutment Panel Analog Wide Analog Narrow NXDN Narrow Narrow Adjust item item tuning Number Adjustment range 9 point ADJ Common 14096 2 Receive Assist 9 point ADJ Common 1 4096 3 Transmit Assist 1 point ADJ Common 1 4096 4 Frequency High Transmit Power Transmitter Limit 14256 Section 1 Mid Transmit Power Transmitter Limit 1 256 Section 1 Low Transmit Power Transmitter Limit 1 256 Section 1 High Transmit Transmitter Power 1 1024 Section 2 Mid Transmit Transmitter Power 1 1024 Section 2 Low Transmit Transmitter Power 1 1024 2 Transmitter 1 1024 Section 2 Balance Maximum Transmitter Deviation NXDN 024 Section 4 Maximum Transmitter Deviation Analog 024 Section 5 Transmitter 024 Section 6 QT Deviation Transmitter 024 Section 7 DQT Deviation Transmitter LTR Deviation 024 Section 8 Transmitter 024 Section 9 DTMF Deviation Single Tone Transmitter Deviation 024 Section 10 Transmitter 024 Section 11 MSK Deviation Transmitter 024 Section 12 CW ID Deviation
131. TM981400BF 0503 I Dual BUS Buffer FNC3 FUNC1 cs DC Switch 10513 TO7WT126FU F ol Alert 1 ase m 558 RTSO RTS FNC3 8 555 4 8674 1 nex at TXDO 955 2 PIE 1M CN705 R637 ri 3255 85 5 th 0513 R638 CN720 m DH D512 513 0828310 Tk DC Switch IGN Reverse 40512 LTCOT4TEBFS8 Prevention Fre 0825310 a E x SP 5 5 SP MIC ME ME B BUS B BUS 72 X57 824 6 10 s SCHEMATIC DIAGRAM X 820H 820H mf mmm rm mam m maa rm mama maaa m wa 1 1 B BUS 8 33C
132. TR RXC GPSC DWUP DINT 08 D7 MODEL C579 0 01 C7 PCB VER C580 0 01 010 7 59 DSP MCCSXCN HOST RDY MCDICN MCSCKCN 7MCCSAF MCDOAF MCDIAF MCSCKAF 5 100kX2 R606 1M DRST 58 3 100k 5 RSSI TEMP THP1 US X57 824 4 10 R58 0 3 3k ASSIST 33A 2 33M IF DET SCK1 TX RX UNIT X57 8240 1X B BUS 33A 2 1 508 TC7SH08FU F IPCS AND Gate 1C301 TC7SH08FU F MOD R702 VREF 1 65V C718 0 10 1 MOD SMF 1 330 R709 R711 2 8773 2 2k ASQDET R716 00k 4155 0 R770 47k C734 4700 gt PN I 100k 100k 3 3 1 VCO MOD VREF 91 701 BU7462NUX R771 47k 762 0 01 VCO MOD 5 5 2 720 1 SQL Noise R738 10k 91 705 BU7242NUX BRF Buffer AMP SQ BW Switch R720 33A 2 8 525 R730 C733 11 4 47k 470
133. Termi nal Parts Adjustment Method Specifications Remarks 5 Sensitivity check 1 CH Sig 1 1 SSG output Wide 5k 1174 0 32 MOD 1kHz 3kHz Narrow Common Section Item Panel test mode 117dBm 0 324V MOD 1kHz 1 5kHz 1 Test Channel Channel 1 Test Signaling Mode Analog Signaling 1 SSG output Wide 5k Narrow PC test mode 116dBm 0 35 V MOD 1kHz 3kHz 115dBm 0 401 MOD 1kHz 1 5kHz SSG AF VTVM Oscilloscope Distortion meter 4 Dummy load Measurement Test equipment Unit Ter minal ANT Ext SP connec tor Check Adjustment Parts Method 12dB SINAD or more Specifications Remarks 1 Setting 1 DC voltage 13 6V 2 SSG standard modulation Wide MOD 1kHz DEV 3kHz Narrow MOD 1kHz DEV 1 5kHz 2 Receive Assist This adjust ment can be performed only PC test mode 1 Adj item Receive Assist 2 Adj item Low1 Low2 Low3 Center1 Center2 Center3 High1 High2 Hi gh3 Press Apply All button to store the adjustment value 3 Transmit Assist 44 This adjustment can be per formed only PC test mode 1 Adj item Transmit Assist 2 Adj item Low1 Low2 Low3 Center1 Center2 Center3 High1 High2 Hi ght3 PTT Press Trans mit button Press Apply All button to store the
134. UCTOR 220NH L316 L41 1885 39 SMALL FIXED INDUCTOR 0 18U L40 1885 92 SMALL FIXED INDUCTOR 180NH L404 L92 0639 05 CHIP FERRITE L34 4607 15 AIR CORE COIL 6T L405 L33 1496 05 SMALL FIXED INDUCTOR 22UH L34 4608 15 AIR CORE COIL 7T L501 L92 0138 05 L34 4608 15 AIR CORE COIL 7T L503 L92 0138 05 L34 4609 15 AIR CORE COIL 8T L504 506 L92 0162 05 ADS CORE L92 0163 05 BEADS CORE L508 L92 0138 05 P FERRITE L40 1275 92 SMALL FIXED INDUCTOR 12NH L510 L92 0138 05 HIP FERRITE P FERRITE P FERRITE I I L40 1885 92 SMALL FIXED INDUCTOR 180NH L801 L79 1958 05 FILTER HGK HGK2 L40 2285 92 SMALL FIXED INDUCTOR 220NH L802 L40 2775 57 SMALL FIXED INDUCTOR 27 0NH HGK HGK2 L92 0446 05 BEADS CORE L805 806 L92 0138 05 CHIP FERRITE HGK HGK2 L40 1885 92 SMALL FIXED INDUCTOR 180NH L40 2285 92 SMALL FIXED INDUCTOR 220NH L77 3073 05 TCXO 16 8MHZ L77 3015 05 TCXO 18 432MHZ L40 2775 71 SMALL FIXED INDUCTOR 27NH L71 0678 05 MCF 49 95MHZ L92 0163 05 BEADS CORE L40 3975 92 SMALL FIXED INDUCTOR 39NH RK74HB1J100J L40 2285 92 SMALL FIXED INDUCTOR 220NH RK74HB1J104J L92 0163 05 BEADS CORE RK74HA1J104J RK74HB1J104J L40 2275 92 SMALL FIXED INDUCT RK74HA1J101J L40 1875 92 SMALL FIXED INDUCT L92 0140 05 CHIP FERRITE RK74HA1J104J L92 0163 05 BEADS CORE P506 508 RK74HB1J104J L40 1875 92 SMALL FIXED INDUCTI P510 RK74HA1J104J P511 RK74HA1J101J L92 0140 05 CHIP FERRITE P512 RK74HA1J104J L92 0179 05 CHIP FERRITE L92 0163 05 BEADS CORE P513 RK
135. XO lt lt AF Detector 0704 1 1 Tuer mus THPL THPl L X2ICLKIN X2ICLKIN z 2 m 2 FSXO 5 5 8 DA3S101F 2SC4738 GR F 8 KL nb Se SS 11 THPL ABUS ABUS CLKXO CLKXO R775 REE P 2 CN803 DBUS 72502 3 ETT pus BUS 05 TC7SHOBFU F MIC AGC 2 1 5 2 2 Pea 228 2 n R561 Dual BUS Buffer ay 271 TX Power Module 9 vss 22 3 m R568 Sp 2 8 S m 2 4 Sessa aalsisicialsislciaiaislslsicialc slcialaialslsls m CMS auf 5 1506 22 vec o zac oM e 8 R41 R46 eal fr led 2151 le ed les le 5212 kol kal tl fe les ie S78 of s sf xfs xn OUTPUT canz 2fina Mm 5 0 NM a Ba ea Bybee SES Spa TCIWHI26FU F o s ik E23 1278 05 I 2 2 2 aeae 640 REIS 4 ala 2 I e gt Tolz oou T8 815 al 528 558 z Z S S O T 5 5 z 0 ENIG ef E fa ea fea ea eae kle 5 z ei 4 5 s SS zl R526 33MDSP E Bad Span nen 888 4 9 aleno R569 mg 538 Sio 1 5 5 5 cuia We FL DC DC Co
136. abnormal the 10511 be broken When normal value is confirmed It is unlikely that the BGA parts are broken When an error display appears on the LCD 7 1 An error occurs when the ASIC internal RAM reads The LCD displays ERROR 1 or writes The ASIC may be broken An error occurs when the DSP internal RAM reads The LCD displays ERROR 2 or writes The DSP may be broken An error occurs when the SRAM reads writes The LCD displays ERROR 3 The SRAM may be broken NX 820H G 820H TROUBLE SHOOTING Failure diagnosis of the GPS section Built in GPS model only Overview When the GPS function does not operate use this flowchart to determine the problem Note The transceiver supplies the voltage to the GPS antenna and the voltage is checked when the transceiver is turned ON When the voltage is lower than the specified value G ANT FAIL is displayed for 2 seconds before entering user mode At this time the expected defect of the GPS antenna is a short This error message does not appear when the expected de fect is an open Major parts for a GPS circuit e GPS module A801 W02 3768 05 Buffer IC IC801 TC7WH126FUF Filter 1801 L79 1958 05 GPS active antenna KRA 40 option Positioning is not carried out normally When an abnormal condition is When the power supply is turned G ANT FAIL is displayed KHA 40
137. alala amp 4 4 104 D s He 1 zi D512 513 0 2 DC Swtch IGN mm DG BUS 529 33 m 004 SIE lt GND er 3 5 FLS Reverse D512 1 0504 172 1040 05 28 5065 el ols m OTS CN707 Curent LTCOl4TEBFSS C337 our N R337 C343 BD7542FVM e a DC Switch 50CS sots Su ap 5 Susp TS RST RST amp 18 Prevention 0825310 i Ge FEE rer es lt AN MEER L KreAoTSED OR KTEAOTSEIKGRI 552 gt EM A2 ex 1505 8546 VOD vor us 41 15 9 5 8826310 5 5 2 06V TXLED 2 E 1 2 9 5 Hi gt a 5 777 RXAF SMF a mex GND T L76V D 2 SEE 855 2 Ei 5 E 30 POWER LED ON 5 0V SWITCH Ltd 2 z z z 2 x X 2z 55 o 82 z 2 SB sp sp Reverse D502 8615 R610 o POWER Q10 s 5 _ 4 EX Digital GND R503 lt lt lt lt lt m 5 a a x sP 5 sp TA SPF SP 5 5 Preventon 5825310 4 7kerc13 470k 1 14 58 30 2151 05 06 1 50 5 5 D in SP SPF MIC MIC MIC MIC TXLED BUSY LED 2230 R681 0 49408 100k ale S MIC MIC
138. ar row 2 Adj item Low Low Center High High Press Apply button to store the adjustment value 1 Adj item Open Squelch Analog Wide 2 Adj item Low Center High High Press Apply button to store the adjustment value 1 Adj item Open quelch NXDN Very Narrow 2 Adj item Low Low Center High High Press Apply button to store the adjustment value 550 Distortion meter Oscillo scope ANT Ext SP con nector PC test mode 1411 Write the value as followings Analog Narrow Wide S QL 138 S Q L gt 138 S Q L gt 138 S Q L 138 S Q L 138 NXDN very Narrow S QL 171 S Q L 171 S Q L 171 S Q L 171 S Q L 171 6 Low RSSI at 118dBm adjust 54 1 Adj item LRSS 2 Adj item L RSS L R SS L R S S L R S S L R S S 4 SSG output 118dBm 0 28uV MOD 1kHz 21 5kHz 1 Adj item Low RSSI Analog Narrow 2 Adj item Low Low Center High High SSG output 118dBm 0 28 MOD 1kHz 1 5kHz ANT Ext SP connector PC test mode 1411 Panel tuning mode After input signal from 550 press B key to store the adjustment value PC test mode After input signal from SSG press Apply button to store the adjustment value Note Wide very narro
139. ar 6p 017 SEN 2 P 2 m 4 SWITCH Prevention ays STS go 238 STR 52520050 20588825 290598 2525222225 22225255 322222588552 confers eta VW lu Mk ale sl uno 25 1 tt 5255 GND2 oUTPUT SOT 5 TN al rett Ed 5 Reverse Power 058 888888 Fa Xu 835 5 s 5 E 129V 45W z 3 2 SEG 215 Sis 8 a as sas oT 1 2 pla alo ier ente 1 ES 249 ERS 5042582 e wm as gt 2 01617 5 5 2 3 2 2 e EM gigas ele o 9535 en e 58228 2 5 2 a glo 228 afo le 215151 JRR sje 9 o o a 5 235 TS K 4 2dB 2 nse ngg E c 230 830 230 asme EE R sds 25A vec ov T 315 Seza gliu o p 1 283 1 8 i m S 338 7 5l8 slo S SS8 224 55 DE onverter SAN 51 b z su rs ff C506 VREF 358 RB46 R813 8588 zjar 983 229 5 3 M 177 3073 05 ii 9 7 S n ef al BACKLIGHT
140. ation 20Hz frequency is fixed Change the 2kHz adjustment value to become the same deviation of 20Hz within the specified range 2kHz Tone de viation is within 1 0 of 20Hz tone deviation PC test mode Press Apply button to store the adjustment value after all adjust ment point was adjusted 47 NX 820H G 820H ADJUSTMENT Measurement Adjustment Panel test mode PC test mode Test Unit Unit Parts Method emarks equipment nal 4 Maximum Adj item 1 Adj item Maximum Deviation Panel tun Write fixed value 2995 3117Hz Deviation NDEV Deviation NXDN meter ing mode 7513 for each NXDN Adjust Narrow Oscillo ALI adjustment point PC test mode adjust Deviation meter Deviation meter Scope Transmit at each Press Apply All LPF 3kHz LPF 2 PC test adjustment point button to store the Narrow mode and check that the adjustment value 9 gt Analog deviation is after all adjust ON PTT Press Trans between 2995Hz ment point was Press B key to store the adjustment value mit button Press Apply All button to store the adjustment value Very Narrow 48 Adj item NDEV Adjust ON Press lt B key to store the adjustment value 1 Adj item Maximum Deviation NXDN Very Narrow PTT Press Transmit button Press
141. ave form is confirmed The RXD circuit is fauity D512 Square wave form Replace D512 When a normal wave form is confirmed When abnormal Verify the RF input signal line condition is confirmed The signal line parts are faulty L801 C821 C824 R842 R843 Verify each part When a normal condition is confirmed ASIC IC is abnormal Replacing TX RX Unit TX RX unit Information Frequency Range Original For Service TX RX MHz unit Number unit Number NX 820H G GPS model K 450 520 X57 8240 10 X57 8240 14 Model Name NX 820H K 450 520 57 8240 11 57 8240 15 NX 820H G GPS model K2 400 470 X57 8240 12 X57 8240 16 NX 820H 400 470 57 8240 13 57 8240 17 33 NX 820H G 820H TROUBLE SHOOTING 34 m Method of confirming Original TX RX unit and Service TX RX unit SUPPLIED ACCESSORIES ESN ET gt ett een ter ene ecce 1 KENWOOD ESN NXDN ESN MPT ESN Addendum this pamphlet 1 PRINTED CIRCUIT BOARD The following data is written on the printed circuit board Data Type Description Firmware NX 720 820 K type firmware FPU Data X57 823 NX 720 Kx type data PC programming mode X57 824 NX 820 Kx type data Voice Language English Various Adjustment General adjustment values for the 57 Data PC Test mode 823 NX 720 and X57 824 NX 820 Model Name KENWOOD ESN Type
142. aya prte 12 WA N 5 014 3 R141 a du 14 S 23 17 SYMTIM 1006 47 a VouT3 Vour2 Ez 12 i 100 5 2 3 2 med c mer ax e 1 4 4 s S 16 RS Faner Sas cn710 13 DE SwichisoC lt med mes 225 25101 573 2 m 024 Lio Era 5 al S 5 1 z SEN vin f 08 ne FSDET Ez sll T 20 F1CNT 1 EI 28 100 TA E TN 33 2 5 ST zi gl as 09 TXRVE he 155422 B D A Converter F34CNT EN a TOGE ai 1 4 1 cao 25 SSH Supply Protection EMG sq OTS 078 S 8 vss Sis AMI 6 pro R2 DSW 47 IN4 vinn l R671 100p FNC4 7 5 BUS Buffer Dd 9 258 E R438 5 33GPS 33GPS Ata 0010 017 TRAMP 10k C741 1C712 22 2 4 i 559 eho 100k 2 8 0105 0 switch 225 Antenna switch gt 1 58 C504 ABI d usevop Em 5121070 m GLED 10 5 2 20178 ving 17 sB 100 C640 xj 5559 2 2 585975 See FK3303011 Hi Power 5 91511 ES 16 cus o z J 4 4 10 am fer
143. d with a 40 dummy load and connected to an AC voltmeter and an audio distortion meter or a SINAD measurement meter at all times during checking tuning Panel Test Mode Test mode operation features This transceiver has a test mode To enter test mode press and hold the A key while turning the transceiver power ON Before the transceiver enters test mode the frequency version information appears on the LCD momen tarily Test mode can be inhibited by programming To exit test mode turn the transceiver power OFF The following functions are available in test mode gt Hold Test signaling up continuously Signaling No INM Volume level up down PTT MIC Transmit 0 to 9 and X Use as DTMF keypad If a key is pressed during transmission the DTMF corresponding to the key that was presses is sent appears on the LCD display Function Display Function off Analog NXDN Analog A NXDN N Function off LCD all lights LCD all point appears High Mid Low power High icon not appears Mid icon appears Low icon appears Function off lt Compander on off On 9 icon appears gt Beat shift on off On 0 icon appears INM Volume level up down PTT MIC Transmit 0 to 9 and X MIC Function off 35 NX 820H G 820
144. e Deviation meter LPF 3kHz HPF OFF PTT Press Transmit button Press Apply button to store the adjust ment value Deviation meter Oscillo scope Panel tun ing mode PC test mode 411 Write the value 513 Reference value 0 35kHz 0 05kHz Write the value 513 Reference value 0 75kHz 0 05kHz 49 NX 820H G 820H ADJUSTMENT Measurement Adjustment DEM Item Panel test mode PC test mode Test _ T Termi Unit Unit Parts Method emarks equipment nal 7 DQT Devia 1 Adj item DQT 1 Adj item Deviation ANT Panel tun Write the value 0 35kHzx0 05kHz tion adjust Adjust Deviation Analog meter ing mode 430 Reference Narrow Deviation meter Narrow Oscillo ALNA value LPF 3kHz Deviation meter scope HPF OFF LPF 3kHz PC test HPF OFF mode sun key PTT Press Transmit 1411 to store the button Press Apply adjustment value button to store the adjustment value Wide 1 Adj item DQT 1 Adj item Write the value 0 75kHz 0 05kHz Adjust xx Deviation Analog 430 Reference Wide value ON PTT Press Transmit Press lt key button Press Apply to store the button to store the adjustment value adjustment value 8 LTR Devia 1 Adj item LTR 1 Adj item LTR Deviation ANT Panel tun Write the value 0 75kHz 0 05kHz tion adjust
145. e adjust ment value Deviation meter Oscillo Scope ANT Panel tun ing mode AN PC test mode 1411 Write fixed value 513 for each adjustment point Transmit at each adjustment point and check that the Analog deviation is between 2050Hz and 2150Hz Deviation meter LPF 15kHz HPF OFF Panel tuning mode PTT ON PC test mode PTT Press Transmit button 2050 2150Hz PC test mode Press Apply button to store the adjustment value after all adjustment point was adjusted Write fixed value 513 for each adjustment point Transmit at each adjustment point and check that the Analog deviation is between 4150Hz and 4250Hz Deviation meter LPF 15kHz HPF OFF Panel tuning mode PTT ON PC test mode PTT Press Transmit button 4150 4250 2 PC test mode Press Apply button to store the adjustment value after all adjustment point was adjusted 6 QT Deviation adjust Narrow 1 Adj item QT Adjust Deviation meter LPF 3kHz HPF OFF ON 0 store the adjust ment value 1 Adj item QT Deviation Analog Narrow Deviation meter LPF 3kHz HPF OFF PTT Press Trans mit button Press Apply button to store the adjust ment value 1 Adj item QT Adjust ON Press lt B key to store the adjust ment value 1 Adj item QT Devia tion Analog Wid
146. e dealer to tune the transceiver Used for communication between the trans ceiver and Data programming mode Used to read and write frequency data and other features to and from the transceiver Used to check the transceiver using the PC LE This feature is included in the FPU PC tuning mode Used to tune the transceiver using the PC Firmware programming mode Used when changing the main program of the flash memory Used to transfer programming data from one Clone mode transceiver to another Firmware version Used to confirm the internal firmware version information 2 How to Enter Each Mode Mode User mode Operation Power ON A Power ON Panel test 5 Panel test mode Panel tuning mode PC mode Received commands from PC Power ON B Power ON One second s Power ON Firmware programming mode Clone mode Firmware version information 3 Panel Test Mode Setting method refer to ADJUSTMENT 4 Panel Tuning Mode Setting method refer to ADJUSTMENT 5 PC Mode 5 1 Preface The transceiver is programmed using a personal com puter a programming interface KPG 46A 46U and FPU programming software The programming software can be used with a PC Fig ure 1 shows the setup of a PC for programming NX 820H G 820H REALIGNMENT 5 2 Connection procedure 1 Connect the transceiver to the
147. e memory circuit 3 Sending frequency program data to the PLL 4 Controlling the squelch on off using the DC voltage from the squelch circuit 5 Controlling the audio mute circuit using the decode data input 6 1 ASIC The ASIC 507 is a 32bit RISC processor equipped with a peripheral function and ADC DAC This ASIC operates at 18 432MHz clock and 3 3V 1 5V DC It controls the flash memory SRAM DSP the receive circuit the transmitter circuit the control circuit and the dis play circuit and transfers data to or from an external device 6 2 Memory Circuit The memory circuit consists of the ASIC 10507 the SRAM 503 and the flash memory 10501 The flash memory has a capacity of 32Mbit which contains the trans ceiver control program for the ASIC and stores the data It also stores the data for the transceiver channels and operat ing parameters that are written by the FPU This program can be easily written from external devices The SRAM has a capacity of 1Mbit which contains the work area and data area Flash memory Note The flash memory stores the data that is written by the FPU KPG 141D tuning data Deviation Squelch etc and firmware program User mode Test mode Tun ing mode etc This data must be rewritten when replac ing the flash memory SRAM static memory Note The SRAM has a temporary data area and work area 6 3 Display Unit The display unit is compo
148. e radio close enough to the vehicle operator to permit easy access to the controls when driving 3 4 DC Power and wiring 1 This radio may be installed in negative ground electrical systems only Reverse polarity will cause the cable fuse to blow Check the vehicle ground polarity before installa tion to prevent wasted time and effort 2 Connect the positive power lead directly to the vehicle battery positive terminal Connecting the Positive lead to any other positive voltage source in the vehicle is not rec ommended 3 Connect the ground lead directly to the battery negative terminal 4 The cable provided with the radio is sufficient to handle the maximum radio current demand If the cable must be extended be sure the additional wire is sufficient for the current to be carried and length of the added lead 4 INSTALLATION PLANNING CONTROL STATIONS 4 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 4 2 Radio location Select a convenient location for your control station radio which is as close as practical to the antenna cable entry point Secondly use your system s power supply which sup plies the voltage and current required for your system Make sure sufficient air can flow around the radio and power sup ply to allow adequate coolin
149. erforms this operation The ompander can be turned on or off using the FPU 10 GPS Circuit GPS model only The GPS information function can be used by setting it through the FPU The GPS signal of 1575 42MHz received with the GPS active antenna with a built in LNA is pro cessed by the GPS module A801 and input to the ASIC 507 through the UART port The ASIC 507 processes the GPS data NMEA and sends the resulting information to the LCD 16 Display unit 54 3830 10 Part Name Description NX 820H G 820H COMPONENTS DESCRIPTION TX RX unit 57 8240 1 Part Name Description IC LCD Driver AVR 80C TRANSISTOR TX Busy LED Switch PLL System TRANSISTOR TX Busy LED Switch DC AMP CV Assist TRANSISTOR LCD Backlight Switch TX Power Module TRANSISTOR Backlight Switch OP AMP APC TRANSISTOR Status LED Switch DC AMP BPF TRANSISTOR Backlight Switch AND Gate Diode Line Protection FM System LED Key Backlight DC AMP RSSI LED LCD Backlight AVR 33M LED Status LED Voltage Detector BINT LED TX Busy LED AVR 50C LED LCD Backlite DC DC Converter 50M VARISTOR Line Protection AVR 33A Diode Key Control Zener diode Over DC Supply Protection AVR 33GPS AVR 15M AVR 33C Flash Memory
150. g SERVICE This radio is designed for easy servicing Refer to the schematic diagrams printed circuit board views and align ment procedures contained in this manual NOTE If you do not intend to use the speaker 3 5 mm jack and the D sub 15 pin connector fit the supplied speaker jack cap and ACC cap to stop dust and sand from getting in Speaker jack cap y ACC SP JU SP 7 W GPS Power input connector NX 820H G 820H SYSTEM SET UP Merchandise received Choose the type of transceiver Transceiver programming Frequency range MHz RF power 450 520 400 470 NX 820H G K 820HK 45W NX 820H G K2 820HK2 See page 4 personal computer programming interface KPG 46A 46U and FPU programming software are required for programming KCT 60 Option KES 3 External speaker Y Y Connection cable KCT 18 Ignition sense cable Option See page 6 Option KES 5 External speaker See page 7 See page 8 REALIGNMENT 1 Modes Firmware programming mode Clone mode Firmware version information Mode User mode Panel tuning mode Data programming mode PC test mode PC tuning mode Function For normal use Use by the dealer to check the fundamental Panel test mode Wen characteristics Panel tuning mode Used by th
151. g 1 PTT Press Transmit button Power meter Ammeter 2 CH Sig 2 1 ON 2 Test Channel Channel 2 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button 3 CH Sig 3 1 PTT ON 3 Test Channel Channel 3 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button 3 Low power check 1 CH Sig 1 1 PTT ON 1 Test Channel Channel 1 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button 2 CH Sig 2 1 ON 2 Test Channel Channel 2 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button 3 CH Sig 3 1 PTT ON 3 Test Channel Channel 3 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button 4 MIC sensi tivity check 1 CH Sig 1 1 AG 1 2 PTT ON 1 Test Channel Channel 1 Test Signaling Mode Analog Signaling 1 AG 1 2 PTT Press Transmit button Deviation meter Oscillo Scope AG AF VTVM ANT Check an inter nal tempera ture of radio from 20 to 26 0 25 121Hz K 108Hz K2 485 1MHz K 0435 1 2 2 40 0W 50 0W UHF 13A or less 3 5W 6 5W 7A or less Adjust AG input to get standard MOD Dev 3 0kHz at 5mV 1 0mV 43 NX 820H G 820H ADJUSTMENT Item Panel test mode PC test mode Test equipment Measurement Unit
152. gram mode 6 Press write button in the window When the transceiver starts to receive data the LOADING display lights 7 If writing ends successfully the checksum is calculated and a result is displayed 8 If you want to continue programming other transceivers repeat steps 4 to 7 NX 820H G 820H REALIGNMENT 6 4 Function If you press the A key while FIRM is displayed the checksum is calculated and a result is displayed lf you press the A key again while the checksum isdisplayed FIRM is redisplayed Note This mode cannot be entered if the Firmware Program ming mode is set to Disable in the Programming software Normally write in the high speed mode 7 Clone Mode Programming data can be transferred from one trans ceiver to another by connecting them via their modular microphone jacks The operation is as follows the transmit transceiver is the source and the receive transceiver is a tar get Note Clone mode should be enabled 1 Turn the source transceiver power ON with the lt a key held down 1 second CLONE MODE is displayed on the LCD 2 Power on the target transceiver 3 Connect the cloning cable No E30 3382 05 to the mod ular microphone jacks on the source and target 4 Press the s key on the source transceiver The data of the source is sent to the target While the source is sending data red LED blinked While the target is receiving the
153. h 8pin Modular Connector Specification Signal Type Description port type Item and Condition NX 820H G 820H TERMINAL FUNCTION Max Digital CMOS output VOH 3 7 5 2 VOL 1 1 Switched B output Output Voltage tery voltage This parameter depends on Bat Output Current 200 mA GND Ground Digital CMOS input Pull Up 5 0 10 VIH 5 2 VIL 0 5 Digital CMOS 3 State Buffer output Pull Up 5 0 22 VOH 5 2 VOL 1 1 19200 MIC Ground MIC Groud is ground port for phone Audio input Aoutput Copling Capacitor Input impednce Allowable Frequency 3000 Digital Digital transistor input Pull Up 5 0V 4 7kO VIH 5 2 VIL 0 9 Baud rate 115200 15pin D sub Connector Specification Digital Digital CMOS input Pull Up 5 0 47 VIH 5 2 VIL 0 5 VOH 5 2 VOL 14 Pin yo signal Description Item and Condition Min Typ Max Unit Note No Name Type This parameter Voltage depends on Battery V 1 SB Power Switched B output voltage Supply Current 2 0 A with KCT 60 0 5 A 2 IGN Digital Ignition sense input Input Voltage 10 8 x 16 V da 3 4 I Ww 40 10 Distortion 3 SP2 Analog Speaker output
154. he KCT 60 Note You must set up using the KPG 141D Before the external speaker can be used you must as sign one of the keys as External Speaker using the KPG 141D Black White lead KCT 60 Square plug Black lead 5 Changing Serial Port Level 5 1 Change FNC1 TXD and FNC2 RXD of D SUB 15 pin connector from TTL level to RS 232C level FNC1 TXD 6pin and FNC2 RXD 7pin of D SUB 15 pin connector are configured at the TTL level as the default value But you can change these serial port level to RS 232C level through the RS 232C level converter IC 10516 by configuring the port Remove the R664 R635 and R662 chip jumpers and sol der the chip jumpers to R666 R633 and R665 5 2 Change FNC1 TXD FNC2 RXD FNC3 RTS and CTS of D SUB 15 pin connector from TTL level to RS 232C level FNC1 TXD 6pin FNC2 RXD 7pin FNC3 RTS 8pin and FNCA CTS 9pin of D SUB 15 pin connector are con figured at the TTL level as the default value But you can change these serial port level to RS 232C level through the RS 232C level converter IC 10516 by configuring the port Remove the R664 R635 R662 R659 R658 and R632 chip jumpers and solder the chip jumpers to R666 R633 R665 R663 R660 and R630 R658
155. he KPG 141D Default HR1 14 HR2 Te GND Note You must set up using the KPG 141D 4 Horn alert cable KCT 18 KES 5 or through KCT 36 extension cable a 1 2 Terminal function D sub 15 pin Pin No Function Molex 15 pin Pin No IP KCT 60 1 SB 1 Y Square plug IGN 2 Crimp terminal EXT SP Harn alert 3 Ignition Sense Cable KCT 18 Option DI The KCT 18 is an optional cable for enabling the ignition function The ignition function lets you turn the transceiver power on and off with the car ignition key 2 3 4 5 6 7 8 9 3 1 Installing the KCT 18 Ignition sense cable in the transceiver _ a eee 2 Horn Alert Function The Horn alert function max 2A drive is enabled by in gt Square plug stalling the KCT 60 in the transceiver Ignition line of the car NX 820H G 820H INSTALLATION 4 External Speaker Option 4 1 KES 5 External speaker KES 5 can be installed for KCT 60 Connection procedure 1 Remove the ACC cap on the rear of the transceiver 2 Connect the D sub connector of the KCT 60 to the D sub 15 pin terminal of the transceiver 3 Insert the two crimp terminals of the KES 5 to pins 3 and 12 of the square plug 4 Connect the square plug to the 15 pin connector of t
156. he modulation signal of the Low speed Data is applied to pin 23 of the IC 122 The modulation signal that is digital data of sampling frequency of 96 kHz is set for the PLL IC by the DSP 502 through the PLL line 5 4 Local Switch D16 D17 The connection destination of the signal output from the buffer amplifier Q11 is changed with the diode switch D17 that is controlled by the transmission power supply HSW and the diode switch D16 that is controlled by the reception power supply 50R If the HSW logic is high it is connected to transmit side drive 0102 If the HSW logic is low it is connected to a receive side mixer Q202 2 010 011 016 17 SKY72310 362 D13 1SV278F 28 5108 28C5108 Y F RKS151KJ Loop BUFF BUFF l Filter e p AMP sw to TX stage X1 16 8MH 5 PLL i 7 001 RF LI 8 PCSRF ___ IC3 1 2 8 BD7542FVM VCO MOD z u 2 150 123 2 2 BD7542FVM Fig 6 PLL circuit NX 820H G 820H CIRCUIT DESCRIPTION 6 Control Circuit The control circuit consists of the ASIC 507 and its pe ripheral circuits 10507 mainly performs the following 1 Switching between transmission and reception via the PTT signal input 2 Reading system zone frequency and program data from th
157. he radio from its shipping container and check for accessory items If any item is missing please contact KENWOOD immediately 2 PRE INSTALLATION CHECKOUT 2 1 Introduction Each radio is adjusted and tested before shipment How ever it is recommended that receiver and transmitter opera tion be checked for proper operation before installation 2 2 Testing The radio should be tested complete with all cabling and accessories as they will be connected in the final installation Transmitter frequency deviation and power output should be checked as should receiver sensitivity squelch operation and audio output Signalling equipment operation should be verified 3 PLANNING THE INSTALLATION 3 1 General Inspect the vehicle and determine how and where the ra dio antenna and accessories will be mounted Plan cable runs for protection against pinching or crush ing wiring and radio installation to prevent overheating 3 2 Antenna The favored location for an antenna is in the center of a large flat conductive area usually at the roof center The trunk lid is preferred bond the trunk lid and vehicle chassis using ground straps to ensure the lid is at chassis ground NX 820H G 820H GENERAL 3 3 Radio The universal mount bracket allows the radio to be mounted in a variety of ways Be sure the mounting surface is adequate to support the radio s weight Allow sufficient space around the radio for air cooling Position th
158. hnology is embedded in the firmware under the license of Digital Voice Systems Inc GENERAL INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced techni cians familiar with similar types of commercial grade com munications equipment It contains all required service information for the equipment and is current as of the pub lication date Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions These are issued as required ORDERING REPLACEMENT PARTS When ordering replacement parts or equipment informa tion the full part identification number should be included This applies to all parts components kits or chassis If the part number is not known include the chassis or kit number of which it is a part and a sufficient description of the re quired component for proper identification PERSONAL SAFETY The following precautions are recommended for personal safety DO NOT transmit if someone is within two feet 0 6 me ter of the antenna DO NOT transmit until all RF connectors are secure and any open connectors are properly terminated SHUT OFF this equipment when near electrical blasting caps or while in an explosive atmosphere All equipment should be properly grounded before pow erup for safe operation This equipment should be serviced by only qualified tech nicians PRE INSTALLATION CONSIDERATIONS 1 UNPACKING Unpack t
159. illator if necessary SSG PC test mode Press Start button of Auto Tuning Press Apply button to store the adjustment value after the automatic ad justment was finished PC test mode The value of IF20 will become around 0 after the adjust ment was finished Remark Frequency is ad justed under receiv ing condition with SSG 45 NX 820H G 820H Transmitter Section Item Panel test mode PC test mode ADJUSTMENT Measurement Test equipment Unit Termi nal Adjustment Parts Method Specifications Remarks 1 High Transmit power Limit 1 item HLMT Adjust x 2 Adj item 4 Press B key to store the adjust ment value 1 TEST CH Low Low Center High High 5 point 2 Transmit Press Apply All button to store the adjustment value Mid Transmit power Limit 1 Adj item MLMT Adjust 2 Adj item M LMT_ gt M L MT gt M L M T gt M L M T gt M L M T _ gt 3 4 lt 10 store the adjust ment value 1 TEST CH Low Low Center High High 5 point 2 Transmit Press Apply button to store the adjustment value Low Transmit power Limit 46 1 Adj item LLMT Adjust 2 Adj item L LMT gt L L MT L L M T L L M T gt L L M T 3 PTT ON 4 P
160. is product complies with the RoHS directive for the European market This product uses Lead Free solder JVCKENWOOD Corporation NX 820H G 820H Document Copyrights Copyright 2012 by JVC KENWOOD Corporation rights reserved No part of this manual may be reproduced translated distributed or transmitted in any form or by any means electronic mechanical photocopying recording or other wise for any purpose without the prior written permission of JVC KENWOOD Corporation Disclaimer While every precaution has been taken in the preparation of this manual JVC KENWOOD Corporation assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the informa tion contained herein KENWOOD Corporation reserves the right to make changes to any products herein at any time for improvement purposes Firmware Copyrights The title to and ownership of copyrights for firmware embedded in KENWOOD product memories are reserved for JVC KENWOOD Corporation Any modifying reverse engineering copy reproducing or disclosing on an Internet website of the firmware is strictly prohibited without prior written consent of JVC KENWOOD Corporation Further more any reselling assigning or transferring of the firmware is also strictly prohibited without embedding the firmware in KENWOOD product memories Transceivers containing AMBE 2 Vocoder The AMBE 2 voice coding tec
161. ltering through a LPF and HPF cir cuit The amplified signal is then converted to a DC signal by the detection circuit The converted signal is fed back to 507 1705 1 2 Q702 D702 12705 2 2 ASQ DET ASGIAPG BPF P 507 ASQDET lt Fig 3 Squelch Circuit 4 Transmitter System 4 1 Audio Band Circuit The signal from the microphone is amplified by IC703 1 2 and limited by the AGC circuit composed of D703 D704 Q703 and Q704 IC703 2 2 works as an anti aliasing LPF filter 2 502 5 MIC 703 2 2 5 1C701 1 2 Y 10507 To TX AMP Ju ASIC p LPF stage AGC D703 704 Q703 704 Fig 4 Transmitter System 10102 4 2 The audio signal output from the Audio band circuit is converted to digital data with a sampling frequency of 48 kHz This digital data is sent to the DSP 502 and voice signals of 300Hz or lower and frequencies of 3kHz or higher are cut off so that an audio range 300Hz to 3kHz is extract ed The audio signal is then pre emphasized in FM mode and synthesized with the signals such as QT and DQT as required and is then output from the ASIC IC507 In Digital mode the audio signal is converted to the 4 Level FSK base band signal and is output from 1 5
162. mia 515 Das 0013 5 pz 22 900 47k 10k EM 5 2674 l m miS 228 m 1 E 1 e 30 2321 05 403 404 Jk RLE L Flash Memory Anal slz Six MIC RX SEL 338 45 238 age 0239 z 508 pois 1131 H 8687 C560 3p 325 i 818 Aas Ins zz I AZ g HOOK RXD1 47k 24 GND Reverse Current ofa 5 DC Switch S0R DASI ppl 1 501 na Ama Hs 55 DGND 8523 534 R705 a 525 3 22 1M DT i sl 1 ai rever al 3 2 2 5 SS s glase tlx 5 aly asx Prevention n sp 7 ols 551 a ae CN507 3 17 Von 68k CN705 RG37 2 game 528 3 SE 533 2 25 C6 ano pe Reset 8559 FE 3 aza C7A6 48754 2 238 2 C240 age Saal LED R 4 75V c u m o 5 Sao n o Mer m 100 LED 2 26 mm STE Sz ela 00 id DD ju cs X ox lt x BD5329FVE 39k 6545 1 R583 100k Olu 56 7 TXD 296 5 lu 26 2 ese ors fea A ca R554 D R580 33k 6 TXDO 77 DC AMP BPF sbk m RA d oM E Eu zm J 56k 5 27 HOOK ASN Bla VI o DBI AD8 l
163. nel Speaker holder 5 When removing the TX RX PCB first remove the top packing 2 To remove the panel assembly first turn the transceiver Then remove the solder of the antenna hot pin and posi upside down tive terminal of the DC cord Then insert a flat head screwdriver into the holes of the Remove the 16 screws from the TX RX PCB power mod chassis and tilt it in the direction as shown by the arrow ule and audio amp Positive terminal of the DC cord Antenna hot pin p XE Panel assembly TX RX PCB Top packing NX 820H G 820H DISASSEMBLY FOR REPAIR Note 2 When mounting the panel assembly pass the flat cable When you supply power to the TX RX PCB after remov ing the TX RX PCB from the chassis solder the positive and ground terminals of the DC cord Recommendation E30 3448 25 to the and GND terminals of the TX RX PCB TX RX PCB Component side 6 Pull it out behind the chassis by rotating the bush 3 of the DC cord 90 degrees in the direction of the arrow after the screw 1 in the negative terminal is removed and the positive terminal 2 is removed from the chassis DC cord 2 Precautions for Reassembly 1 The tab from 1 to 3 is applied the front panel first And 4 to 6 tabs inside the front panel is pushed Speaker holder Display PCB
164. nverter 50M 798 5 asx OTS c 4 x i MM2 fL 5 min 4525 COUPPLER 1 405 E ET 190k 218 5 7 Bien FA iam J ias ex 3 0110411 A x PBF DT e See SEENDE gt ms me 28 gis ta BEES TEES SET el cg ase SET sla CN523 0704 9703 99 4 oe 837 81 41 1 1 1523 Bale D gs 5 CN12 zo d RM _ wap o 1 8 a 225 1 8555 12301 DA3S101F 2SA1832 GR F 2 0220 2 52 S2 228 03208822 I res MCH3914 8 H T 45W 3 1V T 45W 3 3V D110 12218 i E gt gt R37 R28 567 9 usos ay 225 sense A METTE TC7SHOSFU F es oje 1 18 A oS wma f 1 Om s RXVCO RX VCO Assist Tune RXVCO C66 Q10 11 ons TIAA Tur T 30W y2 5 T 3OW 2 9V Pri bt BATTERY elt sam ode S r 7 DC DC 50 H 5 EG Ufer Ghana 522 7 WIESUM Sz R820 C798 21919 n m 1 t4 33A 5 1 Frequency Control D7 TSW2AV T 5Wy2 3V Lad 8 200 120 215 TS 918 refs ma 706 8707 11 12 it i 2 1 T R40 m iui 28 M pius 25C3356 A R24 C109 R103 C104 TX Drive AMP R122 g Forward Power
165. od 2 K2 If the sensitivity is still NG for fL amp fL by using method 1 change the digit as follows L SENS1 34 54 L SENS1 75 95 L SENS2 59 69 L SENS2 98 gt 108 And then decrease the digit L SENS1 amp L SENS1 to get 12dB SINAD SSG output 118 5dBm 0 266uV Mod 1kHz 1 5kHz NX 820H G 820H Item Panel test mode PC test mode ADJUSTMENT Measurement Adjustment Test equipment Unit Terminal Parts Method Specifications Remarks 4 RSSI reference adjust 1 Adj item RRSS 2 Adj item R RSS R R SS R R S S R R S S 5 5 4 SSG output 12dB SINAD level 3dB MOD 1kHz 1 5kHz 1 Adj item RSSI Reference Analog Narrow 2 Adj item Low Low Center High High SSG output 12dB SINAD level 3dB MOD 1kHz 1 5kHz SSG Distor tion meter Oscillo scope ANT Ext SP connector PC test mode Panel tuning mode After input signal from 550 press B key to store the adjustment value PC test mode After input signal from 550 press Apply button to store the adjust ment value Note Wide very narrow NVDN values are same value as nar row 5 Squelch Squelch level 5 adjust Analog Narrow Analog Wide NXDN Very Narrow This adjustment can be performed only PC test mode 1 Adj item Open Squelch Analog N
166. ont RX 0112 114 Over DC Supply Protection SP 8 SP SP MIC MIC ME ME B BUS B BUS X57 824 9 10 NESE AV X57 824X XX 183 184 197 R1 R2 0 10 0 11 NX 820H G 820H K 6 0 NO 7p 0 NO 0 12 0 13 NX 820H G 820H 2 7p 8p NO 0 NX 820H 820H SCHEMATIC DIAGRAM AX TX RX UNIT X57 8240 1X Forward Power R1 1 COUPPLER R2 5 ene i ar Stools 300230 18 esre 91117 5 Reverse Power o 82 820 LER 225 EST ET 2 1 5 5 we D104 105 5 lt 25 Power Detection 28 oma om 7 e Over Voltage I Protection D106 DZ2J056 M R176 R160 R159 Reverse Current Prevention BLED TXD2 8152 0103 1k RKS151KJ 661 CN530 R161 5v TXD2 R177 FWD D108 RB520SM 30 D109 x 5205 30 0108 109 Over DC Supply Protection BUCNT1 TXD1 Dual BUS Buffer 91 716 TC7WT126FU F MKEYO BUCNT2 47 4 BUS Buffer 910511 TC74VHCT244AFK o o E 5 Reverse Current Prevention
167. ress B key to store the adjust ment value 1 TEST CH Low Low Center High High 5 point 2 Transmit Press Apply button to store theadjustment value Power meter Ammeter ANT Panel tun ing mode AN PC test mode 411 48 0W 2 0W PC test mode Press Apply All button to store the adjustment value after all adjust ment point was adjusted Panel test mode PC test mode Test equipment Unit NX 820H G 820H ADJUSTMENT Measurement Termi nal Unit Adjustment Parts Method Specifications Remarks 2 High Transmit Power 1 Adj item HPWR Adjust 2 Adj item H PWR gt H P WR_ gt 1 H P W R _ H P W R _ 3 ON 4 5 lt 10 store the adjust ment value 1 TEST CH Low Low Center High High 5 point 2 Transmit Press Apply button to store the adjustment value Power meter Ammeter Mid Transmit power 1 Adj item MPWR Adjust 2 Adj item M PWR_ gt M P WR_ gt M P W R_ gt M P W R _ gt M P W R _ 3 4 Press lt B key to store the adjust ment value 1 TEST CH Low Low Center High High 5 point 2 Transmit Press Apply All button to store the adjustment value Low Transmit power 1 Adj item LPWR Adjust
168. ription The FPU is the programming software for the transceiver supplied on a CD ROM This software runs under Windows XP Vista or 7 on a PC The data can be input to or read from the transceiver and edited on the screen The programmed or edited data can be printed out It is also possible to tune the transceiver PC KPG 46A or KPG 46U Tuning cable E30 3383 05 PC PC KPG 46A Transceiver KPG 46U Transceiver Fig 1 6 Firmware Programming Mode 6 1 Preface Flash memory is mounted on the transceiver This al lows the transceiver to be upgraded when new features are released in the future For details on how to obtain the fi rm ware contact Customer Service 6 2 Connection procedure Connect the transceiver to the personal computer using the interface cable KPG 46A 46U Connection is the same as in the PC Mode 6 3 Programming 1 Start up the firmware programming software Fpro exe ver 6 1 or later The Fpro exe exists in the KPG 141D in stalled holder 2 Set the communications speed normally 115200 bps and communications port in the confi guration item 3 Set the firmware to be updated by File name item 4 Press and hold the A key while turning the transceiver power ON Then the orange LED on the transceiver lights and FIRM PRG is displayed 5 Check the connection between the transceiver and the personal computer and make sure that the transceiver is in the Pro
169. rrow QT Balance adjust Maximum Deviation adjust Wide QT Deviation adjust Wide Balance adjust Maximum Deviation adjust Narrow QT Deviation adjust Narrow Balance adjust Maximum Deviation adjust Wide DQT Deviation adjust Wide Balance adjust Maximum Deviation adjust Narrow DQT Deviation adjust Narrow Balance adjust Maximum Deviation adjust Wide LTR Deviation adjust Wide 1 2 3 1 2 3 1 Balance adjust 2 3 Balance adjust 1 Balance adjust 2 3 1 2 3 1 2 3 Maximum Deviation adjust Narrow LTR Deviation adjust Narrow Maximum Deviation adjust Wide Maximum Deviation adjust Narrow DTMF Deviation adjust Wide DTMF Deviation adjust Narrow Balance adjust Balance adjust Maximum Deviation adjust Wide Maximum Deviation adjust Narrow Single TONE Deviation adjust Wide Single TONE Deviation adjust Narrow MSK Balance adjust Fleet sync 2 Maximum Deviation adjust Wide 3 MSK Deviation adjust Wide Balance adjust Maximum Deviation adjust Narrow MSK Deviation adjust Narrow Audio Balance adjust 1 Balance adjust 2 Maximum Deviation NXDN Narrow 2 Maximum Deviation adjust NXDN Very Narrow 1 Balance adjust 2 Maximum Deviation Analog Narrow 3 CWID Deviation adjust Very Narrow Receiver Section Measurement Adjustment E Specifications Unit Terminal
170. rrow Al 5 reference level HPWR Adjustments N gt press 1 gt hold Mid Trancemit Power nam A 5 reference leve MPWR Adjustments gt press c gt hold 5 reference level Low Trancemit Power A 5 reference leve LPWR Adjustments Adjustments exit gt press c gt hold Balance A 5 reference leve gt press gt hold NXDN Deviation Deviation NDEV NDEV Narrow gt press A 5 reference level Adjustments 40 c gt hold Analog MAX Deviation A press c gt hold en Deviation c gt press c gt hold DQT Deviation c gt press c gt hold LTR Deviation c gt press gt hold Deviation gt press gt hold Single Tone Deviation gt press gt MSK Deviation C press c gt hold CW ID Deviation Very CWID Narrow c gt press a gt hold c gt press gt hold c gt press gt hold RSSI Low LRSS c gt press RSSI High HRSS gt press c gt hold Squekh Tight c gt press RSSI Reference TT RSSI Reference T RSSI Reference Very ARSS RRSS wide RRSS Narrow Squelch Open Squelch Open Squelch Open a Squelch Tigh ouem NX 820H G 820H ADJUSTMENT s Analog MAX Deviation ADEV 5 reference level Adjustments a
171. sed of the LCD driver IC IC1 the LCD amp Key backlight etc The LCD is controlled using the 4 serial lines LCDDI LCDCE LCDCL LCDDO from the ASIC 1C507 6 4 Key Detection Circuit The keys are detected using an LCD driver IC IC1 If a pressed key is detected by IC1 the information is passed to 1C507 through the serial line 14 6 5 DSP The DSP circuit consists DSP 502 and process es the base band signal The DSP operates on an external clock of 18 432MHz the same as the 10507 the I O sec tion operates at 3 3V and the core section operates at 1 5V The DSP carries out the following processes 4 level FSK processing Analog FM pre emphasis de emphasis Vocoder processing between the audio codec and mod ulation demodulation CAI processing such as error correction encoding QT DQT encoding decoding DTMF encoding decoding MSK encoding decoding 2 tone encoding decoding Compressor expander processing Voice scrambler processing Transmit receive audio filtering processing Microphone amplifier AGC processing Audio mute processing Modulation level processing 7 Power Supply Circuit is connected to the Final amplifier and the DC DC converter IC 405 IC405 regulates the B voltage to 5 0V 50M 50M operates whenever B is supplied IC401 33M and 1 408 15M are enabled while the 50M is operating 33M and 15M provide the power to the ASIC 507
172. the value 3 00kHz 0 05kHz Adjust Deviation Analog 513 Reference PTT ON Wide value Press lt B key to PTT Press Transmit store the adjust button Press Apply ment value button to store the adjustment value 12 CWID De Adj item 1 Adj item CW ID Deviation ANT Panel tun Write the value 1 00kHz 0 10kHz viation adjust CWID Deviation NXDN meter ing mode 376 Reference Very Narrow ALNA value Deviation meter Deviation meter Scope LPF 15kHz LPF 15kHz PC test HPF OFF HPF OFF mode 41 0 PTT Press Trans store the adjustment mit button Press value Apply button to store the adjustment value 51 NX 820H G 820H ADJUSTMENT Necessary Deviation adjustment item for each signaling and mode The following shows the necessary adjustment items for each signaling deviation Please read the following table like the following example In the case of the signaling QT Wide 5k this signaling is composed of three elements Balance Maximum Deviation Analog Wide 5k and QT Deviation Wide 5k Please adjust Balance and Maximum Deviation Analog Wide 5k before adjusting QT Deviation Wide 5k Necessary adjustment and order Signaling Wide Narrow Very Narrow Audio Balance adjust 1 Balance adjust Maximum Deviation adjust Wide 2 Maximum Deviation adjust Na
173. tion Receive Assist The lock voltage of VCO Receive is adjusted This item must be adjusted before all adjustment items for receiver section are adjusted This item can be adjusted only in PC Test Mode Transmit Assist The lock voltage of VCO Transmit is adjusted This item must be adjusted before all adjustment items for transmitter section are adjusted This item can be adjusted only in PC Test Mode Frequency Frequency stability is adjusted under receiving condition with SSG The SSG needs 0 001ppm accuracy so please use a standard oscillator if necessary This item can be adjusted only in PC Test Mode so that the adjustment value is not changed easily High Transmit Power Limit High Transmit Power Limit is adjusted Mid Transmit Power Limit Mid Transmit Power Limit is adjusted Low Transmit Power Limit Low Transmit Power Limit is adjusted High Transmit Power High Transmit Power is adjusted Mid Transmit Power Mid Transmit Power is adjusted Low Transmit Power Low Transmit Power is adjusted Balance The transmit audio frequency response is adjusted This item is adjusted so that the deviation of 2kHz becomes the same deviation of 20Hz This item must be adjusted before all adjustment items for deviations are adjusted Maximum Deviation NXDN Narrow Maximum Deviation of NXDN Narrow Very Narrow is adjusted Maximum Deviation Analog
174. to 17V Useful if ammeter equipped 40MHz to 520MHz AF Volt Meter AF VM Audio Generator AG Distortion Meter 40 Dummy Load Regulated Power Supply Frequency Range Input Level Up to 20dBm Input Sensitivity 10048 Resolution Bandwidth 100Hz Video Bandwidth 100Hz Frequency Range 40MHz to 520MHz Output Level 30dBm to 0dBm Spectrum Analyzer Tracking Generator Test cable for microphone input E30 3360 28 Tuning cable E30 3383 05 Adapter cable E30 3383 05 is required for injecting an au dio if PC tuning is used See PC Mode section fot the connection GREEN RED BLACK BLUE SHIELD 1 2 3 4 5 6 7 8 YELLOW E MIC connector Front panel view Lead wire MBL Mie 48 GND PTT TXD PC serial data from radio MICE MIC HOOK RXD PC serial data to radio DM Shield wire 42 Radio check Section Item Panel test mode PC test mode Test equipment Unit NX 820H G 820H ADJUSTMENT Measurement Termi nal Unit Adjustment Parts Method Specifications Remarks 1 Frequency check 1 CH Sig 1 1 ON 1 Test Channel Channel 1 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button f counter 2 High power check 1 CH Sig 1 1 PTT ON 1 Test Channel Channel 1 Test Signaling Mode Analog Signalin
175. u 81 0 D 20 225 EQ UU 9 D A Converter 90712 1 rn AE 22 2 20178 17 43323 ESB wl m N SET 9 oise Detector DATO 5 4 7 Noise 8 2 L DATAI 2072 gt 2 KTC4075E Y GR 2 Raa Z 4 TSS 4 0705 0706 26 8 26 8 gt IGN D705 706 Line Protection pee elector BINT 4 1 713 5 6k TC7W53FK F 855 225 SUM AMP LPF RX AF 410711 1 BU7462NUX 704 R703 010 10 Sx MIC RX SEL VDD 6 56k vss 5 RXAF SMF 1 gt z SP 2 MIC 5 B BUS 71 X57 824 5 10 2 820 820H SCHEMATIC DIAGRAM 1 X57 823X XX A801 CN801 C809 C814 C815 C816 C820 C821 C822 C823 C824 C825 C826 0801 0802 1801 L802 1 805 L806 R561 R802 R835 R839 R842 R843 R844 IC801 0 10 0 12 NX 820H G 2 YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES YES 0 11 0 13 NX 820H KK2 NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO NO TX RX UNIT X57 8240 1X m j
176. uav 5 MM2 JA e LUN po Bias 1 44 144V Bias 10k 8528 Sx xt SPAF R823 C806 R819 C797 aS 2 D704 0703 624 1213 SDN ske 7 DA3S101F 2SA1832 GR F 8 2 ju amp 22 0 220 2 52 52 ale 8 7 TIET SFe als 3 esas 8 8 g 77 a 515 8 8 8 1 MIC SUM 791 R816 796 820 798 I 4 R769 gt 1 1 0706 10u 10 12k lu 22k 0 220 R811 SSM3J15FS Mute MI2 1 801705 5 10k R787 SSM3J15FS Mute MI1 790 12K Ta 100501 22V 8 u 1 1 847 0 F701 22k x lt ats 8 als 25 lo 5 S 8846 2 R813 217 ams 1 8 glo 705 tk og els gt 1 STS SSM6N37FE 830 1 1 E 5 1C703 lt 8 2 BU7462NUX 9708708 ele 9 gt MIC SUMAMP Mute SwitR 8 3 k raner LPF DD 1 0708 LTCO14EEBFS8 add 0743 I Tlx SEV 4p R38 1 7 R751 756 784 1 E aus 100 MK T 100 1 ors STA E 1 rh DI DI 1 BEE EN aaa a EN 4 5 5000 2 Reverse 5X5 SCK0 Current Prevention 5T amp 5 50778 5 56 21 Sex s XT tu RSs 5 1 5 C779 100p o o lal 741 7 47 2 2 CN710 Bb o
177. uss TC7WBD125AFK el 5 5 8158 58 ws 8 gt i e gt R839 Tor b 25 5 1 GPS Module Expander amp 5 I vel 7 99 gen gig 1 Leval Shift wl 5842 843 26821 1 15 0 P s gale 0 18 519519 ne To ET i LH Byen 100kX2 88 o p D505 510 1 imn D801 802 t Line Protection th Over DC Supply Protection 1 704 1 100 4 EE 59 bo 5 CP706 28 95 SOULS FNC1 5 100kX2 1 5 2 F1CNT R663 1 C639 F34CNT 9 1H 2 i A 100p 4 k p u TT EEE DATO 641 DEO AFO DATAI Ivo 10 100 5 RXD FNC2 a e R665 0642 gt 100 TO7WH126FU F 1 C643 7 15 1 xix once 1 5 83 88 1 0 022 SB cel cyl C644 4 Tig n m I 64 CTSO 1 i F Wwe 100p abs 1 4 6 5 1 82 BS 292C Driver 2 Six T ese 1 5 1 E 1 9 8 Dual BUS Buffer o 1 RXDO EE RXDO D504 DC Switeh Horn Alert 4 n 0825310 LTCO14TEBFS8 leverse Current Provention 8657 661 4 7k 0 M
178. ve the R501 If it oscillates normally the DSP and ASIC may be broken If the FRST is always OV the ASIC is broken The BGA parts are not broken Check the other point then BGA parts If the FRST repeats 3 3V and OV at intervals the ASIC FLASH and SRAM may be broken 31 NX 820H G 820H 32 TROUBLE SHOOTING Checking the signal output from When normal the ASIC by software control value is confirmed when an abnormal Points to be checked Normal voltage value is confirmed Remove R407 If the ASIC side is OV SBC R407 3 3 the ASIC FALSH SRAM may be broken When normal value is confirmed when an abnormal i value is confirmed DEL Normal voltage If the DRST is the ASIC FALSH SRAM are broken When normal Panel control TX RX unit AVR value is confirmed When an abnormal Points to be checked Normal voltage value is confirmed 50C CN412 5 0V When a normal If the SBC is 3 3V when the voltage value of 80C and value is confirmed when an abnormal 50C is abnormal the BGA parts are not broken value is confirmed Points to be checked Normal voltage 80C CN414 8 0V When a normal Panel control Disply unit value is confirmed i ignal Normal voltage When an abnormal If Disply unit is removed and a waveform becomes LCDCE CN514 20 pin 5 0V or OV value is confirmed normal the BGA parts are not broken LCDCL CN514 21 pi 1 When waveform is
179. ver power ON and then keep pressing and holding the S key the firmware version information appears on the LCD NX 820H G 820H INSTALLATION 1 Connection Cable KCT 60 Option 2 1 Installation Procedure 1 Remove the ACC cap on the rear of the transceiver 2 Connect the D sub connector of the KCT 60 to the D sub 15 pin terminal of the transceiver 3 Insert the two crimp terminals of the Horn alert cable to pins 13 and 14 of the square plug 4 Connect the square plug to the 15 pin connector of the The KCT 60 connection cable kit is used to connect the transceiver to a Horn alert cable KCT 18 Ignition sense cable KES 5 External speaker or through the KCT 36 ex tension cable 1 1 Installing the KCT 60 Connection cable in the 60 transceiver 5 Connect the remaining two Horn alert cables to your car 1 Remove the ACC cap on the rear of the transceiver Horn alert signal control 2 Connect the D sub connector of the KCT 60 to the D sub The internal FET switch can be controlled by turning 15 terminal of the transceiver the HA function on off and by using a signaling decode 3 Connect the 15 pin connector of the KCT 60 to a Horn output The maximum current of HA is 2A This switch is alert 2 18 KES 5 or through KCT 36 exten the FETswitch of P channel type Therefore a DC power sion cable supply is necessary to use the HR1 The voltage range is from 5V to 16V Note You must setup using t
180. w NVDN values are same value as narrow Panel test mode NX 820H G 820H ADJUSTMENT Measurement Adjustment PC test mode Test equipment Unit Terminal Parts Method Specifications Remarks 7 High RSSI at 80dBm adjust 1 Adj item HRSS Adjust 2 Adj item H RSS H R SS H R S S H R S S H R S S 4 SSG output 80dBm 22 4uV MOD 1kHz 1 5kHz 1 Adj item High RSSI Analog Narrow 2 Adj item Low Low Cen ter High High SSG output 80dBm 22 4uV MOD 1kHz 1 5kHz SSG ANT nector Ext SP con Panel tuning mode After input signal from SSG press lt B key to store the adjustment value PC test mode After input signal from SSG press Apply button to store the adjust ment value Note Wide very narrow NVDN values are same value as nar row 8 Squelch Tight Analog Narrow Analog Wide This adjustment can be performed only PC test mode 1 Adj item Tight Squelch Analog Narrow 2 Adj item Low Low Center High High Press Apply All button to store the adjustment value 1 Adj item Tight Squelch Analog Wide 2 Adj item Low Low Center High High Press Apply button to store the adjustment value ANT PC test mode Write the value as Follo
181. wings UHF F1 F2 Analog Narrow S QLT gt 248 S Q LT gt 248 5 011 gt 248 5 011 248 S Q L T 248 Analog Wide S QLT gt 255 S Q LT gt 255 S Q L T gt 255 S Q L T 255 S Q L T 255 55 NX 820H G 820H TERMINAL FUNCTION Display unit X54 3830 10 I O Function CN1 to TX RX unit CN514 58 Battery voltage DC supply SB Battery voltage DC supply SP Speaker input SP Speaker input SP Speaker input SP Speaker input BLC LCD backlight control signal input MBL MIC backlight control signal input 02 O N RLED Red LED control signal input k GLED Green LED control signal input BLED Blue LED control signal input GND Ground GND Ground GND Ground E Emergency key detection ak GND Ground a N No connection A 50 5V DC power supply LCDDI LCD data input LCDCE LCD enable input LCDCL LCD clock input LCDDO LCD data output GND Ground GND Ground MIC signal output
182. z K i 18 432 2 T R 400 470MHz K2 SSS IF PCS DSP 011 0101 0102 102 DSP 2 016 17 _ D110 111 L407CDB 33M 33M PLL MOD 15M 33M SKY72310 362 151 2 RA60H40471101 107 RKP351KW IP2 33C IC503 E 4 T R ANT A Pll T 16 Filter VD SW SW LPF 9 33C TCXO e 1 3 1 2 25C5108 Y F 5 HSMB8AS E SRAM 502 BD7542FVM 5 6 50CS x 80T 80T e 5 S PLL MCH3914 7 H 0106 9 P ay D3 4 5 8 5001 1SV325F 2 0105 F P PPS 07 8 9 10 11 12 50C DC SW HSM88AS E 1SV282 F Ei VCO MOD D13 HSW C103 DET REV DRST HDS2 HRDY LEE Se SYMTIM DINT FSDET PCS DSP ASSIST 91 014 58 80 FWD HINT DWUP DC SW 02 25 648 A pee PCS 50C Kk D2 022 091 APC 3 2 2 R MP Se E BD7542FVM STSW x x SCK1 MCDIAF MCSCKAF MCCSAF gt gt 5 LA in MCDOAF MCDICN MCCSXCN E HL DC SW 5 58 HOST RDY DSP ST MCSCKCN RR Q105 3 Ic301 TX 450 520MHz K 0 50C PSCK DSP 400 470MHz K2 0 FK330301 B TC7SHO8FU F in 201 2 2 1 gt 400 05 470 05 2 BD7542F VM 200 _ _ 350 05 420 05MHz K2 S L MIC A0 20 D0 15 WR RD gn TV1 gt ME CS0 CS2 CS3 2 8 IC504 BPF 59 BD5329FVE 58 4 RESET 33 201 1 2
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NX 820H(G)/820H