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NX-300 - SYSCOM

Contents

1.
2. TX RX UNIT g X57 7370 10 B 2 5 5 6 6 7 7 8 8 1 9 1 19 9 8727 m ES E 10 10 Component side Es amp Layer 1 Layer2 479 0128 19 A 2 Layer 3 11 Layer 4 zu Layer5 Layer 6 Ref No Address Ref No Address Ref No Address Ref Address Ref No Address Ref Address Foll side 12 icaoa 108 0504 3D 5 D501 78 090 12 ics00 9B 701 SE oso5 ec a7oa 6 0505 D901 5M 501 8C 1 702 7K 057 7c 090 9P pe 7D 0902 5 1 502 7E 690 4P 6 7N 0604 7 IC5
3. cos I 1 i Il 1 ence 3 o i E Tera i 2 4 1 Ji 1 m n 2 NES zi Wc i i r EE oe cine aaa 2 EET n EUM m san m arm Hrs 2 7 7 edad E 4 E gle He 4 8 H jus cw m
4. Um ei T wes um cns 1103 Baa ty 4 Bah d i 407 145 4 E d uj E pea pum z o E j FARS Cans 176 di _ eazy 4 ge erster 5 al ES C aj C jo SES mm 8787 748 n 8752 5 9 8 Dio 478 228 I S 5 E REA CN406 EB 151818 Tq a ea ca 110 4 ren esr o TIEN 25721 Ej J79 0131 19 A Component side Ref No Address Ref No Address Ref No Address Ref No Address Ref No Address Ref No Address Ref No Address Ref No Address Layer 1 IC101 sk 6404 ica oF es 0404 SE D404 om 9E Layer 2 2 6405 3F 0712 0405 0702
5. A B G H 1 J NX 300 PC BOARD CONTROL UNIT 53 4260 10 11 2 Foil side view J79 0131 19 v 3 4 lo el 5 2 Um 6 7 aF 18 te 0411 3 8 8882 83847888 CN405 9 10 Ref No Address Ref Address Ref No Address Ref No Address Ref No Address Ref No Address Ref No Address Ref 101 5K 10404 9D 417 6F 11 65 0404 1701 D404 5M D416 11 1 102 5l 1 405 1 418 6F 712 6 0405 0702 4R D405 4B D417 103 4k 1 406 5 1 701 7 1 713 40 0406 0703 6R D406 4 0701 1i 1 104 3H 1C407 5B 1C702 5R 714 5R 0407 4 0704 7R D407 9D D702 1 105 4L 1 408 4c 1 703 7 10715 5P 0408 7 0705 0408 7 0703 2 1 106 8 1 409 3c 1 704 3P 716 0409 7 0706 0409 3D D704 1 107 7 1C410 1 705 9N Q101 3K 0410 0707 4 D410 40 0705 1 108 7K 1C411 OF 1 706 7 0102 3K 0411 8G D101 3L D411 7A D706 1 109 6G 1 412 40 1 707 0103 3L 0412 9D D102 eG D412 8
6. TX RX UNIT X57 7370 10 B 2 28 J79 0128 19 2 41 5 2578 5 5 1 5 28 POW OPT6 2 of TX RXE 165731 6 ore 8 ss OPT7 pg 1 21 85 i 8 AGND 1600 8 7 EG e m 7 AGND DGND ao OPT10 Icd 1 4 Nc pm 28 26P RD 2 om 8 8 1703 3 9 B BE 8 cre E 8770 6778 8 10 d 10 1717 Component side 21 Layer 1 Layer 2 11 Layer 3 11 Layer 4 uj 1 5 Layer 6 Foll side Ref No Address Ref No Address Ref No Address Ref No Address Ref No Address Ref No Address 12 1 7 7P 0703 D511 pen so 0706 s 12 70 0601 7N 0705 10F D514 40 pee 0708 s 0508 5 0602 006 10 0515 4P 067 5G 0709 ec 0509 0903 056 48 0702 070 0510 78 osos 4 0506 0517 48 073 10 0711 6 13 0511 6R 1700 9R D507 4Q 0519 5R 0704 10H 13 0512 70
7. 5587 owen super foe m zi ES 4 Ex ES i i Y sos AP Al m 5288 leg uma 1 Ed E off Li ce x 1 B MY T Lue n Lf um z E er mu Rl ae el m amr me ET EM 100 Rei tk DES a 1 ie E mao sco mw pn wi ag cas mia hip anc RSET RSSI 16 5 u ssh B Eod 1 ERROL pe 4 JEI n 5 E sal B HD Ee 3 E 5 amp Sm so 38 27 vy ns 5 100 5 rex 100 ET p sea la Sido 1 soot 6 ET at Sao s 20 2 5 DW DENS Lr Lec mex ik ines Es COMO mA EC EE e me matus
8. suscip 14NE ictor ctos SRAM DSP BUS SW lt nens ven Ex E 1 9 16403 m 1 106 XC8109C29ANN E reser E p Fe zensa me 2504617 2800169 asane tas Sexe TE BPF AMP wh ow 3 1702 aay Bui rcrswestekyua lt PREY LPF ir TED Back Light ASIC 01252 xd A lt jm ICt08 a SCSW EEE pr se js SSMSKIST BEEP ades oem y Y a ur lt Ed 0 3 4 TC7WSSFKIF m E Ewe sw a 1 n se ems poe sw freer mF TS ToNESW 52 52 58 L wa se __________ 4 ae STC DSW APCSW SBC mic C r 1 EH ToDsP 200K 208DA TC7EWSIFKF B TC7SWS1FK F 1 2 O Expander M gt gt wr wr 3
9. Te Te E Soc 7 x Be Be p Hu UE Bip 1 EJ a 1 a succ 27 Jum aw Eme we shoe Pom alg a 8 9 me 4 EJ MESS 8 b p 88 vp E EA 2 s 4 84813118 EEE Bi 1 ed Ble 2 Bd 10 10 951110 6517 1009 pee sot rosie im 8 5 8 5 pe P E dE 23 FREQUENCY CONTROL raves E EE m 15 cse 811 2m 0 E ale gl 8 E veo E sis 159 22 4 sor TR i ly d 8 j gu Er E mer BEAUP er VOOTUNE WR pss eme BFE Eus um t wies m POE D n RIPPLE FILTER iso Wh ow 94 i 87 24 D ga EE gh KETA X57 737 A 2 2 4 300 SCHEMATIC DIAGRAM UNIT X57 7370 10 A 2 BJ BK BL BM
10. e E te _ kt ri it 2272 3 mum cuins rem 165 LN E 8 88 x el 21878 8 xr Eia E E E pw At SWITCH aam we 1 arc svaren almi oura 7 E ipee mal SWITCH SWITCH amp E ris i Ur enm as 8 8 JAPCSW 1 P son B8 Bg BE USE E 1 Bs 58 FMIC Em 828 is 58 05MHz 3 e o S bey CoMPOUTPUT de Odu 220 D pos 2804215 5 NoISEAMPoUTPUT 5220 Be oe pe O wac Bi 5 oman prea mE E EES PE FMFDECoUPLINGI wx cris s m um WASCOUTPUT r URS sg mone im Tt om FMDETOUTPUT nssr E 0 PEE E He Se Qe wa g 57 et we ur Mu Be son 1 4 OF 4 8 Tuc X87 737 2 3 4 SCHE
11. u aor ec _ __ __ ____ SCHEMATIC DIAGRAM INX 300 CONTROL UNIT X53 4260 XX RE H J 8 A MODIAF 0 m mus wx T 1 ever Teng oe ma Do svar pa 100 010 0 2 DWUP Li ue R136 100k or ove 8 gg p 2 o ca d ose 59 nis IX isi 0 moo He owsss es EOM e vu CEC 7 vss 3 10 Tino 57 CKI Eg sso el hose XX mua otu n eves 5 100k 4 AL Els cuon 2 sore A ls ws E 476 3 100k E EKE e viam v ere BFSRO 4 MCCSRCN of md bangi 7 Honma
12. 20101 Gui lad mus a M suuAug Lz LEE 18491 uon es 1913115 811 1 5 5 anjena indu 95 eu smoys Aeidsip 440001 e uonoes Ju 94 272 043 POLI 2 ZHA L INY 257 902 Jy ayz pauuoo AOS uonoes Jy sjueueinseeui 45 Na 2308 ans sue sui uS 78 av 100 1 190 MED 72 008 m ri 9 5 99 0 19 99 9 01 wugpo soL wugpo eLL wugpsgli a u01 2ag 92 NX 300 OPTIONAL ACCESSORIES KNB 47L Li ion BATTERY PACK KNB 48L Li ion BATTERY PACK External View E External View Specifications Specifications Voltage 7 Voltage 7 Battery capacity 1950mAh Battery capacity 2550mAh Schematic Diagram Schematic Diagram DISCHARGING TERMINALS DISCHARGING TERMINALS _ r
13. NX 300 ADJUSTMENT Receiver Section Condition Measurement Adjustment kom Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 1 AF level Panel test mode 1 Test Channel SSG Panel ANT Panel Volume Turn the Volume 0 63 50 setting 1 CH Sig 1 1 Channel 1 DVM Universal knob knob to obtain SSG 4748 Test Signaling AF VIVM connector 0 63V AF output Mode Analog Dummy MOD 1kHz 1 5kHz Signaling 1 load SSG output 47dBm MOD 1kHz 1 5kHz 2 Sensitivity 1 1 Adj temISENST 1 Adj tem Sensitivity 11 Panel Write the value as adjust Adjust 2 Adj tuning followings 2 Adj item ILow mode IL SENS1 gt Center LANI IL SENS1 Low IL SENS1 gt IHigh 2120 5 511 IHighl IL 5 611 Low SENSI Press Apply button to IPC test 135 SENS store the adjustment value mode SENS1 Center Adjust 141 145 Press lt key to store IH SENS IHigh the adjustment value 160 SENS1 High 173 3 Sensitivity 2 1 Adj item SENS2 1 Adj temiSensitivity ZI SSG Panel The sub LCD display adjust Adjust 2 AdjitemiLow Universal shows the RSSI value 2 Adj item ILow Oscilloscope connector Change the IL SENS2 gt Center adjustment value to 5
14. went 5 2 3 e LIS Dos j E SS E EE i xa 2 pm t 5 5 a PE i eee HE e gt lt a rt 4 iL E e 1 6 t 1 m at lt 2 TFADON 4 4 3 gt Sio l Pm i 5 s mE iu site 26 5 48 8 qoc P SS eS SS UN UAR E PT SS SS SS SS SS cL e e elfe JU Ls WEICHEIETHIETIE Si ae E roa TRITT ABIRE be x gt 10 116 TWO 180 RO 10 110 THO 186 Si Fe eso rien roe SH aus essere an ioc o 58 o tx t NX 300 NX 300 86 LCD ASSY INTERCONNECTION DIAGRAM INTERCONNECTION DIAGRAM 6KEY SP MIC SWITCH UNIT POWER SW CHANNEL X41 372 AF VOL SELECTOR CORD ASSY X42 334 TX RX PCB 57 737 A 2 CONTROL PCB 53 426 57 737 B 2 87 NX 300 NX 300 BLOCK DIAGRAM BLOCK DIAGRAM X5
15. aros Dros mA 2964016 Gina stas rco 2 4 BPF Rect p asaver Em 5 lema 16702 Raa vot n Tm ape e p 1 N e 07 08 PF e gt 16 d 10703 0405 Am e kevin sa 2 d Pass LL S ASIC DAC gt 2 1 108 on wd ae Teno ES AMT M 2 TONESW TCTSSSiFEIF TOTSWSIFKIFV22 Me29b4FP r ue TO7SSSIFE F mor one gt gt f o H Toanen Er ina en 1 F T is am o le LED R 8 m sce om voce e Le 3 55 Al rom ves P MUTE x 2 gt sw w cac x Ex a TONESW lt 5 pote vos nos 8 4 VOX Jue ao A seman sre EMG Side 1 Side_2 Side_G IFC TC75851FE F 12 TC7S66FUF TC7SWSTFK FY1 2 25243 05 28 347F 1 5 e asada ska 4 SUM MUTE 4 4 MU
16. 0 CHPC C 479430 CK73HBIAIOAK CHPC 0 K cm CHPC 10UF K casi CK73FBIATOSK CHPC 744 746 CHPC 0 010UF K C432 CK73HBIENOGK CHPC O010UF K 747 748 CK73HBIAIOAK CHPC K C433 10 K 749 750 CC73HCHIHA70J CHPC 1 C751 CK73GBIEIOSK CHPC K ua CK73HBIENOGK CHPC 0DIUUFK 6435 498 CK73HBIA224K 02UF K 782 783 7 01 CHPC J CK73HBIAIOAK O10UF C756 CC73HCHIHA7OJ CHPC J CHPC K C756 CK73HBIATOGK O10UF K CHPC 470PF 075758 CK73GBOJA75K CHPC K 789 760 CK73HBIEIO3K CHPC ODIUFK CK73HBIENOGK CHPC 0000 K CMS CK SHBIHIDK CHPC C761 ce7sHcHiHio CHPC WF D CK73GB1E05K CHPC K C762 CK73HBIATOAK O10UF K CM CK SHBIHIDK _ CHPC 1000PF K C763 CK SHBIEIOSK CHPC O0I0UF K 248 450 08 K C764 CK73HBIHIO2K CHPC 1000PF K C765 767 CK73HBIAIOGK CHPC O10UF K 451 483 CHPC 00100 case CHPC K CK73HBIHIOZK CHPC 1000PF K 065 457 CK73HBIHATIK CHIPC 470PF cm CK BHBIADAK _ 02UF K C459 CKJBHBIMETIK CHIPC 470PF CK73HBIEO3K CHPC OOI0UF K C460 CK73HBIES82K
17. 100 050 40 060 7M 0765 10 i 1 70 71 14 14 300 SCHEMATIC DIAGRAM
18. ETE 90 mes Um a sis 08 3sauer J al ny 15 88 Ty ES wj s 2 7 4 bas ron y 1 NR rn ES 51 HE ons mero m p ier amp E i t Pa a 388 zm ses Ta oe ely 588488 8 SS FK H SCTAMI n SEEEEEEEEEEEEE j 5 oe on ET 4 ED amp memo m l M woo 4 3 ger 067 40 He lo 8 conr ars Emm e 3 is anes R406 18 ape DVDD7 0158 Gp 02 3 526 ik TCXO MOD 16 coner Terre E d 21 Ex h Ble g ean um uoo Wu opis dy CONTRAST TOTWZ2ASFK F pas 5 4 1000P 25 VOLGE REGULATOR GN CONTR d _ 8 212 E rali 52 n i mm EN gla Em p 5 ffs 3 3 MT sum BARE vom 9 878 CURRENT 1U
19. i i KEY Matix CN710 26 Option Board BLOCK DIAGRAM NX 300 52 Lot 223 Converter soc dcus pue 22 22 2 AR lt HH aE n ser Tm lt lt k4 lt Am 4 onsa E Dosw gt 3 LE i 3 sec EE E Dosw E E 1 o uw coe EN su AR lt 22 TOISMSIFKEYUD Rect AMP p ASQDET re Eger E Mar ims ous AIR porem ey Mir 4 oc gt our as nu TR zOtAIDRBR 2583 y TOTSWSIFK R 22 TCTSSSIFET 5 DAC DAC H 1 T i
20. 254 1Hz 8 DQT D023N DOT D023N DOT 07541 DOT D7541 10 1590 1590 11 None DTMF Code 9 12 240ne 2 tone 304 7Hz A 304 7Hz 3106 0Hz 3106 0Hz 13 Single Tone 979 9Hz Single Tone 979 9Hz 14 None Single Tone 1000Hz 15 None MSK 16 MSK MSK No RX 1 RAN1 1 2 3 RAN1 Maximum deviation pattern Panel Tuning Mode Preparations for tuning the transceiver Before attempting to tune the transceiver connect the unit to a suitable power supply Whenever the transmitter is turned the unit must be con nected to a suitable dummy load i e power meter The speaker output connector must be terminated with a 8Q dummy load and connected to an AC voltmeter and an audio distortion meter or a SINAD measurement meter at all times during tuning W Transceiver tuning To enter tuning mode To enter tuning mode press the 2 key while the trans ceiver is in test mode Use the lt key to write tuning data through tuning modes and the 4 52 key to adjust tun ing requirements 1 to 4096 appears on the LCD Use the gt key to select the adjustment item through tuning modes Use the gt key to adjust 5 reference level adjustments and use the Side2 key to switch between Wide Narrow Very narrow LCD display in panel tuning mode CV voltage AD value etc 26 111256 Adjust
21. a MCDOAF e 8 SEES ES ESSE STATE Fl JFADCN D Hano 5 8 2 ic H e E 8 SSE TSE SST TE FE EEE TT Fee Ts TS BL HMM Nro 5 4 B ty 25 5 I 5 umix amem gt aye lve 1 msc 08 8 He 11 s al Tones ADD ww 52 NEUE 311 FER Li ale Bi ben m 124 i taal i 2 M e var 5 D RIS aT i FEE ER EFEFEF stew SIS oem m i 14 5 FC 8 g 2 4 3 3 4 T ines eL g 8 lt 858 4 49 1 1 pa H nil 5 3 eagle 1 i 98 5 ore 3 B w BM C ock 38281 11 1116 Bo D ae 4 mm o os lt aep mo ETD 4 5 S pla PFE o CONT LON 8458 9 6 PRD 3 8 5 g mo a par ro X NEN 5 TEE PTT kk 8 45 p x 15 5 8 f son E 7 mi EC amp 9 Em m e 4 4 from 2 9 g Em E 5 j omn 121 5 5 ea a eee reas aot aay kkk 5 amp ri kd 8 4 i rr SSS 1 e 2 5 5
22. 01 2 Transistor LCD backlight switch a3 FET LCD backlight switch Q4 FET MIC shift control Q5 FET MIC shift switch Q101 102 Transistor 12key backlight switch Q103 12key backlight switch 401 402 FET Level converter 15 NX 300 16 COMPONENTS DESCRIPTION TX RX u X57 7370 10 Ref No Part Name Description Ref No Part Name Description D506 507 Variable Frequency control 12204 OPAMP IRSSIVAGC 0510 511 capacitance diode 1 500 ic Temperature sensor 99142517 bun dicis Frequency IC501 IC DC AMP for TCXO MOD EIE Dioda Fipple fiter oe PELIE D519 Variable TX modulation 1C503 9 DC AMP for VCO tune capacitance diode 1 504 IC OP AMP VCO MOD APO D600 601 Diode Local switch 1 600 Auto power control 0604 Zener diode switch 1 700 Buffer D605 Zener diode APC protect 1 701 FM IC 606 607 Diode Antenna switch 1 702 703 IC DC AMP for BPF 0700 Diode Ripple filter 1 900 control 702 704 Variable Vari cap tune 1 901 DC DC converter capacitance diode 12902 Voltage regulator 50C 0705 RF AGC 1C903 IC Voltage regulator 33C 0706 708 Variable Vari cap tune 0503 Transistor Ripple filter sepecitence diode E BUTE AMP D709 Diode Anten
23. 8 1 ate un la voo outa Ras A ERES e 818 m VCC Commo Ez meo n Le mm 8 wm Ak mn 3 FREE E ple BA m FEW cro E Odiu Sik Xk TEDE TORE MOTE em cp mes vh DE common voc d m VEE we 3 nase oues 77 p 5 4511 RET H OPTa 1 E T aiu me 5 pe DT 0 14 e e 4 45 gt 1 9 8 53 426 6 10 300 SCHEMATIC DIAGRAM AG Al e e e T 3 5 5 8 EGU 215 D 1851 an gis Y ge um E UMEN AF ANP SW 21 Fk SOM aH GFE 72 M 2 seco m inane 2128 Exree MODULATION ak am Di 14 TCINE mop SUM eps P 2 Yo
24. Thermal switch Breaker Thermal switch Breaker PROTECTION CIRCUIT PROTECTION CIRCUIT THERMISTOR 10kQ 0 5 40 5 DIODE DIODE CHARGING TERMINALS CHARGING TERMINALS 93 NX 300 SPECIFICATIONS GENERAL Models Basic w 12 key Model Frequency Range 450 520 MHz Number of Channels 512 Zones 128 Max Channels per Zone 250 Channel Spacing Operating Voltage Battery Life with KNB 48L Analog 12 5 25 kHz Digital 6 25 12 5 kHz 7 5V DC 20 5 5 90 duty cycle more than 12 5 hours 10 10 80 duty cycle more than 8 5 hours 22 F to 140 30 to 60 C 1 0 ppm 500 Operating Temperature Range Frequency Stability Antenna Impedance Dimensions W x H x D Projections not included Radio only 2 28 x 5 02 x 1 63 58 x 127 5 x 41 3 mm with KNB 47L 2 28 x 5 02 x 1 63 58 x 127 5 x 41 3 mm with KNB 48L 2 28 x 5 02 x 1 91 58 x 127 5 x 48 5 mm Weight Radio only 8 82 oz 2509 with KNB 47L 13 23 oz 375g with KNB 48L 14 29 oz 405g RECEIVER Sensitivity Digital 6 25kHz 3 0 204 Digital 12 5kHz 3 0 25uV Analog 12dB SINAD 0 25uV Analog 25 7288 Analog 12 5kHz 6548 Analog 70dB 50 100kHz Analog 70dB Less than 3 Selectivity Intermodulation Distortion Spurious Respon
25. no 8 ul TX RX UNIT OPTION BOARD SECTION 557 7370 10 8 2 ee OPTION BOARD SECTION 57287040 2 m oS ae 28 row Ge a Fo lc ls ome oes zm m LO i 5 REN a 125525 x momon gm i umm gm EE 11 le eme Fe oe e Pow 1 sil gt e 00 em Lorri o ow E hen ud om on 1 meo rl 81 53 426 10 10 57 737 2 1 1 BB BC AY AZ a dU dui lE uma pM SWITCH UNIT i m BASTION i MID 20905 47 T i won m mae 4 17 4 s 1 Ix D n 1 28 soome CY A 55 WE ie m mE SEED i 2 me
26. xa2 3340 10 CORD ASSYISOPIN FPC 20 1A G10 1373 04 FIBROUS SHEET SP Xe0 3860 10 TERMINAL ASSY SMA a 610 138404 FIBROUS SHEET TOP PANEL CONTROL UNIT 53 4260 10 K 11 K3 23 2A 611427214 RUBBER CUSHION SP 24 3A 61133104 SHEETIAIR 01 40 30 2715 05 LED 611 4428 04 SHEETIPTT 03 4 30 2215 05 LED 4 3A G11 4429 04 RUBBER SHEETIFET 07 B30 2215 05 180 K 3A 61144044 SHEETIAIR ci CK7SHBIAIO4K CHPC O10UF K 28 2A 61 4458 14 SHEET SP C2 6 CKT3GBIEIOSK 100 K 30 2A 61 4459 04 SHEET TX RX PCB CK73HBIAI4K O10UF K 31 2 613 2128 14 CUSHION TX RX C10 CK73HBIAIO4K O10UF K 33 2 G13225804 CUSHIONISOPIN FPC eu CK73HBOJIOSK CHPC 100 K 3 38 653 176202 PACKINGITOP 125 CK73HBIHATIK CHPC 470PF K 35 38 68347633 PACKINGITERMINAL BLOCK C16 17 CC73HCHIH101J CHPC 100PF J 38 68347603 PACKINGIOP BOARD 23 27 CK7SHBIHI02K CHPC 1000PF 3 6531765 1 PACKINGIGKEY K 28 34 CC73HCHIH101J CHPC 100PF J 38 1A 68846641 PACKINGI18KEY Ka 35 CK73HB1H102K CHPC 1000PF 3 653176804 PACKINGIVOL CH O RING 2 CHPC 6800PF 40 68846801 PACKINGICAP 037 CK73HBIHI02K CHPC 1000 41 28 663179244 PACKINGISMA O RING C38 CC73HCHIHIOIJ CHPC 100PF J 42 2A J19 5505 11 HOLDERFG SP C40 7 221 220PF J 43 28 J19 5506
27. 0607 Q608 DTC144EE 28 1824 ASQ Soros Mro osos DC SW Protect k Filter SSM KI5TE 1 504 JAPCSW TC75WS1FUF 2 2 8 10703 8 710181 5 LMGTIO1BIMS 55 5 88 TUNE PE TUNE FS TUNE XF700 avs 38 58 5 5 1 Y wor L713 714 715 1721 722 L726 48 0 75V 8 DET4 O 8 m 4 o PTT ol lt O sidet Sie 2 lt ji s ide lt E 91 NX 300 LEVEL DIAGRAM omy 8990 9090 090 z090 1090 0090 sjoypeded 8 esn uojaes eim uj lt 0999 ve90 ii e199 ood 1099 hoy T ine rt 12euuoo uonoes Jv T GOW ZHAL ZHAG JIN 84 01195 S 9Y LETE ewa 2019 owa 80191 90201 ouor 2273 asv TI TI ES HESS pes S dsa MsuuAwzse MIsusAwoLt TOUR jeune
28. 4 3 fs MEL EA ol L7 100 maup E gt 1 Luscsw EH pum CE SS 25 ne 1 aeo 88 peram 54 9 Ms woo PE 77 Hais 2228 0 iil REGULATOR 520 men sumen E H E Bg E2 INL CRF RI E 38 E T 7 i a 200 i 2222 is Se E ES HE um i E NEIN CR UE CMM nein 2 100 1 ga C 33 gg et m 1 002 IAE saa imcosxen 5 mn ww Postne 06 1 EPU ma T tix 9 B serecson 8 i wer Raia tk pn L5 E mmo ax Bx 2 pene 3 4 Lum ale zji ws cm ik ashe E m PIA 35 soor E lax e n PM o D EE mne 8 E Memes j 2 A a a 1 om pp nere e MIXOUTPUT carar a MEET p ME ware is vss 2 855 E E Fm 5 H 3 wam 2 c mm
29. snc gt E T prom m ACDICN mooki B icscicie 29 o E2 menor AE ascot Ins 2 2 DA CONVERTER 83 426 5 10 CONTROL UNIT 53 4260 AB AD SCHEMATIC DIAGRAM INX 300 2 T 4 5 one wer 2 ney mme cno iorno Es de Sersw id A RT mae EI xm mi verit cns sl i pe na m nmm 4 5 gla emm om i ordi a dal eo Bo 2238 WIN Sar Ens B R736 C713 R751 Reso eremi a ste ma 217 a E E e gt ae TOTSWSIFKIF vss RERFSU Be 3 cms ES 4 10707 z isl wm
30. J 1598 599 182 0163 05 BEADS CORE 7 20 CHPC _ 20 B 1500 14022762 SMALL FIXED INDUCTOR Z2NH 1608 cen B 1602 140187692 SMALL FIXED INDUCTOR 18NH 1608 CKI3HBIHAIK CHIPC 470PF 1603 01575 92 SMALL FIXED INDUCTOR 15NH 1608 C850 CC73HCHIHIONJ CHPC J 1604 182 0138 05 CHIP FERRITE 2900 CK SGBIHIDK CHPC 100PF K 1505 140685592 SMALL FIXED INDUCTOR S 8NH 160 C901 902 CK BHBIMATIK CHPC 470PF 1606 141 187543 SMALL FIXED INDUCTOR 18NH 2015 C903 CKI3GBIHATIK CHIC 470PF 1607 182 0148 05 CHIP FERRITE C904 908 73 1 01 CHPC J 1009 134457505 AIR CORE COIL C910 73 1 01 CHPC J 1610 192 014905 CHIP FERRITE 912 320 CC73HCHIHA7OJ CHPC J 1811 141 228543 SMALL FIXED INDUCTOR Z20NH 201 972 923 CC73HCHIHA7OJ CHPC J 1612614 134 4564 05 AIR CORE COIL 087433 CHPC J i615 140157557 SMALL FIXED INDUCTOR T5 0N 5 C944 CKI3HBIHATIK CHPC 470PF Uo 140 5681 88 SMALL FIXED INDUCTORIO SGUH 16 945 946 CC73HCHIHA7OJ CHPC J 1703 41 47845 SMALL FIXED INDUCTOR 47NH 1608 Cot CKI3HBIHATIK CHPC 4JPF L704 140 1891 86 SMALL FIXED INDUCTOR 1 8U 1608 294849 CK7aGBIEIOSK 108 K 1705706 182 0138 05 CHIP FERRITE 092076545 47UF 16W uo 141 278539 SMALL FIXED INDUCTORIO 27U 252 CK73GB1C224K CHPC K 1708 141 5685 39 SMALL FIXED INDUCTORIO 580 282 0952 CK SH
31. RK73HH1J181D 180 1 16W R661 RKT3HBIJIOA CHPR 10K J 1 16W 560 RKI3HB1J220J CHPR 22 R663 RK73FB2B000J 00 J 1 8W R561 RK73HH1J181D _ _ 180 0 Rest RK73HB1J000 CHPR 00 1 16W 665 666 271 270 1 16W 8582 RK73HBIJ102J CHPR 10K J 1 16W R563 RK73HBIJA73J 47K 1 18W 8667 AK73EB2E823 BK J1 AW 8564 RKT3HBIJISA CHIPR 150K J 1 16W R66 RKT3HBIJATIJ 470 J 1 16W 8565 RK7SHBWIOW CHPR 100 J 1 16W R670 RK73HB1J224 2200 1 16W 8566 RKI3HHIJ474D CHIPR 47K 0 1 16W R701 RK73HB1J561J 560 1 16W R702 RK73HB1J334J 330K J 1 16W 8567 RKI3HB1JA72 47K J 1 16W 8568 RKT3HB1JA7AJ CHPR 47K 1 16W 8703 RK73HB1J100 10 J 1 16W 570 571 RK73HB1000 CHPR 00 1 18W RT04 RK73HB1J102 CHPR 10K J 1 16W R572 RK73HBIJIOOJ CHPR 10 J 1 16W R705 RK73HB1J000 CHPR 00 1 16W R574 576 RKTHB1J000 CHPR 00 8708 RK73HB1J103J 10K 1 16W R710 RK73HB1J000 CHPR 00 J 1 16W R599 RKI3HBIJIOAJ CHPR 100K 1 16W ROO RKI3HBIJ102J CHPR 10K J 1 16W R712 RK73HBIJ103J CHPR 10K J 1 16W R601 RK73HBIJI83J CHPR 18K 1 16W R714 AK73HBIJIOOJ CHPR 10 J 1 16W 8602 RATSHBII24 CHPR 120K J 1 16W 877 RK73HB1JA73J 1 16W 603 RK73HB1222 220 J 1 16W R718 RK73HB1J183 18K J 1 16W 8719 RK73HB1J274 CHIPR 270K
32. Remove the PTT FPC from the connector of the TX RX unit CN901 Remove the 14 screws Anchor the screw hole of the TX RX unit using the tip of a pair of tweezers as shown in the figure Then lift the TX RX unit to remove it from the chassis Removing the TOP packing G53 1762 02 1 2 3 4 Pull on the TOP packing with your fingers to turn it back as shown in the figure Pull the TOP packing to the left to remove the packing that is fit into the left groove of the chassis Pull the TOP packing to the right to remove the packing that is fit into the right groove of the chassis Remove the TOP packing NX 300 DISASSEMBLY FOR REPAIR 3 Precautions for Reassembly 2 Mount the chassis onto the case Mounting the chassis onto the case Note 1 Place the key top on the chassis Then fit the chassis After mounting the chassis onto the case if the 18 key tightly into the groove of the key top part on the key top or the Auxiliary Orange key part of the VOL CH packing gets stuck inside the case as shown Note the figure return it to the normal position using a soft Confirm that the entire groove of the key top fits to the tipped item e g finger chassis tightly Prying it with a pointed metal tool such as forceps may damage the key top or packing Auxiliary Orange IL NX 300 DISASSEMBLY FOR REPA
33. needed when the Press lt key to store to store the model LCD ASSY B38 the adjustment value adjustment value L 0923 05 is NMI replaced PC test mode lt gt 3 Volume T Adj 17 Adj item Panel tuning model This item 15 counter Adjust ICounterclockwise Turn the volume knob needed when the clockwise Volumel counterclockwise fully variable resistor Press lt key to store R31 0666 05 is the adjustment value replaced PC test mode Turn the volume knob counterclockwise fully Press Apply button 10 store the adjustment value 4 Volume T Adj item 1VOLZ 17 Adj tem Panel tuning mode clockwise Adjust Clockwise Volumel Turn the volume knob 40 ADJUSTMENT NX 300 Condition Measurement Adjustment fem Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 5 Assist 1 Adj item RAST 1 Adj item Receive Panel Panel The sub LCD display 2 5V 0 1V voltage Adjust Assist tuning and indicator on RX 2 Adj item L RASTI gt 2 Adj mode the PC window IPC test mode IL RASTI Low LAL shows VCO lock Press Apply IH RASTISIH RAST Center voltage Change the button to store Adjust IHigh adjustment value to adjustment value Press lt key to store High IPC test get VCO lock voltage after all
34. 2008 WAS 509 SRC 2903 SSMeLo5FU 4 4 oc sw gt soir 55 55 yee O o 5 9 25 7 5V 05 25 1955 5 DC sw 1 sor m gt S 4 5 4104 10900 75851 8 5 1 RSSI THP VAGC S DET DET 2 Sex CIO 1 Sigel BSSI VAGG CV 8_ IF DET zi 89 SW Side 2 o JEMG LED_R LED_G nr Side G F Side2 L DSW APCSW ASSIST A 0 TV1 PTT Side 1 Side 2 Side G LED G 91
35. 3 l 5 Vecswenc ciet he i cues voles p pron pron p Dipl E p voor os pr ovom sec as aer mr ms ook ars 8 VOL 2 ena nr 1 us p ET Lenco 18 z 74 295 Xd E viz 20 apioa 9 __________ 2 rs REVERSE CURRENT PREVENTION H 1 suns rew s mE 1 Smor mns 8 rua BLE reer ol 98 Tave 3 dy aes om mon 4 22 mar reer nar ver on vs 7 2 coe ss mE m woe 0825 15 ocn 58 mocsncw 8 cox E7 miocsxcn 3 8
36. CHPR 00 R787 RKT3HBIJI2A CHPR 120K J 1 16W vet R31 0666 05 VARIABLE RESISTORIVOL R788 4 1 18W 51 80645 ROTARY SWITCH CH R789 RK73HBIJISAJ CHPR 150K 1 16W Di1 MA2S111 F DIODE R790 1 021 CHPR 10K J 1 16W 012 16 15516 DIODE 8781 RKI3HBIJA7AJ CHPR 47K J 1 16W 017 EMZ6 8N ZENER DIODE 8783 RKT3HBIJIO2 CHPR 10K J 1 16W D18 19 ZENER DIODE 8794 RKI3HBIJIOAJ CHPR 10k 1 16W 020 2 NNCD6 8G A ZENER DIODE 8785 CHPR 00 022 23 03221 DIODE 8796 RK73HB1J333J CHPR 3K 0101 MA2S111 F DIODE 8787 RK73HB1J102J CHPR 10K J 1 16W 0102 155416 DIODE R798 RKI3HBIJIOAJ CHPR 10K 1 16W 0401 405 155388 DIODE 8799 RKI3HB1J334J 3300 1 16W 0406 HRBOSOZA DIODE ROO RKI3HBIJA7AJ CHPR 470K J 1 16W D407 MA2S111 F DIODE 8801 RKT3HB1JA73 4 1 18W 0408 188301F DIODE 8802 RKT3HB1JA74J CHPR 470K J 1 16W 0409410 26111 DIODE 8803 03 CHPR 10K Dn 15506 DIODE REO RK73HB1000 CHPR 00 J 1 16W D412 188301F DIODE 8805806 RK3HB1JA73 4K 0413 1 5388 DIODE 8807 RK73HB1J102J 10K J 1 16W 0414415 6 DIODE RBOB RKI3HBIJAIJ CHPR 40 1 16W 0416417 155388 DIODE ROS RK73HB1J334J 330K J 1 16W D701 188301F DIODE RK73HB1332 33K J 1 18W 0702 MA2S111 F DIODE nen RK73HB1J8
37. E Lan si 2 A 3 tao us 21 20 18 m zl cer 5 m ll 8316 52 k a ome ABO ce PREVENTION E T 8j aC 8 5 99 e 1 muse ESHER gig e 0 A0010 A 22 RES Tamm alt m sre lt m EM 2 2 ae ve oo ER 1395 0 x SE vol EH ve vss 091 m D SECI 8 5 B i ifo APC BITE 0 ss rono las EVE Waa BE SI 88 Bg Sen Rc L3 _ MC zb amp 8 Dew e A0013 suc E 238 Noise sw 813 NOISE AMP W gle 33 gigs gt 5 3 ono 8688 2 o i Tp xum 3 EN H afne 5 1 78 218 5 zu 223 id 8 2 Tean Hv sepe reat LN A0015 3 ad n E 1 da da dy a eem 5 2 domo INPUT MEE 1 ET rosna 25 Adi m cer i Ee 4 Ls vests Big DINT E ue wx 07 m 1 1 Lees 880 773 wap 2
38. MOD 1kHz 41 5kHz 22 4uV MOD 1kHz 1 5kHz 8 Squelch Adj SQLT 1 Adj itemTTight Tight Adjusti Squelch Analog adjust 2 Adj item Narrow 50171 2 Adj Analog IAnL 50071 ILow Narrow 50111 Center AnH SQLTI High AnH SALT High Adjust 556 output SSG output 124 SINAD level 698 12dB SINAD level 648 MOD 1kHz 1 5kHz MOD 1kHz 1 5kHz TAnalog Adj SALTI TT Adj tem Tight Wide Adjust Squelch Analog 2 Adj item Wide SQLTI 2 Adj IAwL SQLTI Low SQLT Center AwH SQLTI High 5017 High Adjust 556 output SSG output 124 SINAD level 698 124 SINAD level 648 1 2 3kHz MOD 1kHz 3kHz 6 The RSSI at 80dBm adjust of Narrow is common with the RSSI 80dBm adjust Analog Narrow 51 NX 300 52 TERMINAL FUNCTION X53 4260 XX yo Function 1 ics Chip select output 2 RES LCD reset output 3 AO Address bus 0 output 4 WR WR bus output 5 Do VO Data bus 0 6 VO Data bus 1
39. cues y orm pl voce AP Aton ves MUTE ACC y 5 4 1 uon ql ssw one Rect m Lhe lt l gt movas MM M s X iere LA GA ns ossis E pre MUTE 4 MUTE 4 MUTE 1 i Gnsmcemomr 5 28A1832 GR F 8 TOXO L3 L3 werte gt c lg Volume Selector knob 89 NX 300 BLOCK DIAGRAM 57 7370 10 TX RX unit 90 Q507 12CCK 25 5383 111 T2CSDA Fipple 0510 SSMGLOSFU 05112547 SW 0600 ne 12502 25 5636 TCXO MOD vo Loop BUFF BUFF TCXO Filter vod gt 800 19 2MH2 LMC7101BIM5 PLL A 2512 0508 509 25 508 52 BER 0506 507 18V325F Y 8 882 10504 0519 15 278 BUFF TC75WBTFUF 1 2 D506 507 508 509 AMP de PLD D514 515 516517 00 1SV282 F 4 10505 25
40. koo Dl ore oro 8 one also n ons ona qz p seni T wma 080007 fy WRITE Am WEE RINT Ln Ri P i gem or on ate 2d vis 084 ELE cso lll owe cs ceo 52 ray cg ise Em 5 o 1x00 mx 3 XCG109C29ANN RTSO CTS Us os p so S noe 8 ner Br d Conr mos mus 3 a 2 2 x 58 Mk HE msm 219 88 4 RIST AK Eg m ilk 5 ere 1 3 gee x 4 3 822 kd er PTT 026804 era ES sh 8 5 ET Sel i 4 2 4 lt m uo cem 2 45 43 8 X53 426 3 10 SCHEMATIC DIAGRAM INX 300 Pie dia 8 Bed x 5 3 5 ay ss ls lal CONTROL UNIT X53 4260 XX ctos m 4 m e BLO X53 426 4 10 vu 300 SCHEMATIC DIAGRAM CONTROL UNIT X53 4260 XX
41. 0405 5C Layer 3 IC103 6406 sc 7a 33 40 se or ac D701 Layer 4 3H 6407 58 1 2 58 58 0407 7R 0407 D702 Layers IC105 6408 03 7P ic7is sP 7C Q70 50 0408 D703 40 6 8 ic409 704 3P 1076 5 0409 0706 so 0409 0704 Foil side IC107 640 8E on ono 8A 007 an 4D D705 7k icai oF 7N 9102 om 8G din 3L 7A 276 6G 6412 3p 042 010 6G 042 sc 5707 icai sr 3D ons 7A ica 4F 1 709 48 0402 ac 0414 0402 5M 044 oF ic 7 6416 sa c710 6N ons D403 5M 045 300 pce TX RX UNIT X57 7370 10 A 2 Component side vie OARD J79 0128 19 A 2 TX RX UNIT X57 7370 10 A 2 Component side view J79 0128 19 A 2 a 5 BOARD 300
42. 1 16W 604 RKT3HB1682 CHPR 68K 1 16W 8605 RKT3HBIJIOS CHPR J 1 16W 8720 RK73HB1J222 22K J 18W 25 NX 300 PARTS LIST UNIT X57 7370 10 Ref No Address pem Parts No Description Destination Ref No Address in Parts No Description Destination 871 RK73HB1J103J CHIPA 10K J 1 16 8788 RK73HB1JO00J CHP 00 J VI W 8722 RKI3HB1J472 CHIPR J 1 16W 900 RK73HB1J391J CHPR 390 1 16 8724 RK73HBIJI0Q CHIPR 1 16 Rent RK73GB2A000 00 J 1 10W 875 RK73HB1J223J CHIPR 2 J 1 16W R902 RK73HBIJIOOJ CHPR 10 1 16 8903 RK73HB1J821J CHPR 0 J 1 16W 8725 RK73HB1J183J CHIPR 18K 1 16 8727 1 2221 CHIPR 22K J 1 16 904 RK73HBIJO00 CHPR 00 1 16 8728 RK73HB1J221J CHIPR 20 J 1 16W 905 RK73HB1J330J 33 1 16 8730 RK73HB1J000 CHIPR 00 J 1 16W 906 RK73HB1JA74J CHPR 470K 1 16 8731 RK73HB1J103J CHPR 10K J 1 16W R907 RK73GB2A100J 10 J 1 10 R908 1 473 1 16W 8733 RK73HB1JS64J CHIPR J 1 16 8735 RKI3HBIJIOI 100 1 16 909 RK73GB2A000 CHIPR 1 10 8738 RK7SHBIJI0Q _ CHPR 100K 1 16 8910 812 RK73HB1JA74J 470K 1 16W 8737 RK73HB1J221J CHIPR 20 J 1 16W R913 RK73HB1J102J CHPR 10K J 1 16W 8738 7 272 CHIPR 27K J 1 16W RK73HBIJI54 18K J 1 16 915 917 RK73HBIJA74J ATOK J 1 16W DI RK7
43. 100PF J C715 CK73HBICIO3K 0 010UF _ 0010 K CKT3HBIAIO4K CHPC 010UF K C603 7 0 CHPC __ 0 K 0804 805 CKI3HBIHATIK CHPC 470PF cng CHPC 10 C607 CHPC 70 B 0720 CHPC wr C610 612 CKTMMBIATIK CHPC 470PF cm CKTSHBIAIOAK CHPC 010UF K 072 73 208 CHPC 6 C613 CHPC 70F B 081415 CKZSHBIMAZIK CHIPC 4XPF 723 724 CK73HBIAIO4K CHPC 010UF 617518 CK73HBIHA7IK CHIPC 0725 CKJSHBICIOK 0 010UF C619 CK73HBIAIO4K CHPC 010UF K 727 728 CK73HBIAIO4K CHPC 010UF C821 CC73HCHIH150J CHPC 18 J C729 CKI3FBIEA7A CHPC 047UF K C730 CKI3HBICIO3K O OTOUF K C622 _ CHPC 470PF 0823 CC73HCHIHI50J CHPC 18 J C732 _ 470PF C625 CKI3HBIHATIK CHPC 470PF 733 734 CK73HBICIO3K 0000 0828 CK73HBIAIO4K CHPC C735 CHPC G 0627 7 008 C736 CKI3HBICIO3K CHPC 0 010UF K 787 7 20 20PF C628 73 100 CHPC C 0823 CKI3HBIHATIK CHIPC 470PF 0738 73 208 CHPC 22PF 083
44. 52 IHigh get maximum RSSI IC 5 521 SSG output value IH SENS2 90dBm 7 08uV Refer to below Adjust MOD 1kHz 1 5kHz 2 gt SSG output Press Apply All button to 58 5 lj Point S0dBm 7 08 store the adjustment value 52 MOD 1kHz 1 5kHz Press lt key to store e the adjustment value 1 256 Adjustment value 3 Adj SENS2 3 Adj Write the value as Adjust Press Apply button to followings Press lt key to store store the adjustment value the adjustment value SENS2 High 1245 47 NX 300 ADJUSTMENT 124 SINAD level for Analog Narrow 3dB MOD 1kHz 1 5kHz Analog Narrow 3dB MOD 1kHz 1 5kHz Condition Measurement Adjustment kam Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 4 RSSI 1 Adj item 1An RRSSI 1 Adj 8551 556 Panel ANT Panel tuning mode reference Adjust Reference Analog AF VIVM Universal After input signal adjust 3 2 Adj item Narrow Oscilloscope connector from SSG press I RRSSII 2 Adj item lLow key to store the Analog lAnL 51 adjustment value Narrow AnC 551 Center 551 gt High IPC test mode AnH RRSSII High After input signal Adjust SSG output f
45. 59 K29 9406 03 BUTTON KNOB SIDE KEY NX 300 60 1B K29 9407 03 KNOBIVOL 1 A02400213 PLASTIC CABINET 6KEY K 2 A02 4003 13 PLASTIC CABINET IEKEY Ka 61 K29 9408 13 KNOBICH 3 A62 1186 02 4 1B 09071203 ACCESSORY A IBID Nos 0564 04 DRESSED SCREW ACCESSORY 5 1A B11 1853 24 FILTERILCD 8 38 Nog 2426 14 HEXAGON HEAD SCREWIBATT No9 2440 15 SPECIAL SCREWICASE 6 1A B11 1854 02 ILLUMINATION GUIDEILCD 2 28 N09 6549 04 STEPPED SCREWIFG SP HOLDER 7 B11 1855 04 ILLUMINATION GUIDE TX BUSY E 2834 NO9 6554 05 PAN HEAD SCREWIANT OP BOARD 8 838092246 100 ASSY 9 82728844 STICKER F NI408404 CIRCULAR NUTIVOL CH 10 1B B43 1606 04 BADGE 1c N30 3008 60 PAN HEAD MACHINE SCREW BELT CLIP H Na3 2005 48 PAN HEAD TAPTITE SCREWIPCB 20 B62 2014 00 INSTRUCTION MANUAL 12 08208644 STOPPER IGCH 64 573047205 KEYBOARD ASSY 12KEY 14 3A E29 1221 04 RELAY HARDWARE VCO CHASSIS 65 2A 107 0755 15 SPEAKER 18 2A E29 1220 04 RELAY HARDWAREIVCO PCB 66 2A T81 0575 05 MIC ELEMENT 18 E58 0532 05 RECTANGULAR RECEPTACLE SP MIC 67 2 WO9 0971 05 UTHIUM CELL 17 E2042503 TERMINAL BLOCK 68 3A 13100 SWITCH UNITIPTT FPC 18 F07 1931 04 COVERIOP BOARD 69 X41 3720 10 SWITCH UNITIEKEY FPC 19 2A 02483643 EARTH SPRINGISP 70 2
46. ANT Panel tuning mode 118dBm Adjust Analog Narrow AF VIVM Universal After input signal adjust 5 2 Adj item 2 Adj item Low Oscilloscope connector from SSG press lt LRSSII key to store the Analog LRSSII gt Center adjustment value Narrow AnCLRSSII High 19551 5 High PC test mode AnH LRSSI SSG output 118dBm After input signal Adjust 0 280 from SSG press SSG output MOD 1kHz 1 5kHz Apply button to 118dBm 0 280 store the MOD 1kHz E1 5kHz adjustment value TAnalog 1 Adj LASSI 1 Adj item Low Widel Adjust Analog Widell 2 Adj item 2 Adj item Low LRSSII gt LRSSII Center LRSSII gt High IAwH 08551 High 188511 SSG output 118dBm Adjust 0 280 V 556 output MOD 1kHz 3kHz 118dBm 0 281 MOD 1kHz E3kHz INXDN Very 1 Adj item INv LRSSIT 1 Adj ASST Narrow Adjust Very Narrow 2 Adj item 2 Adj item Low INvL LRSSII INvL 1855115 Center INvC LRSSII High INvH LRSSI High INvH 1 8551 SSG output 118dBm Adjust 0 280 SSG output MOD TkHz 1 5kHz 118dBm 0 280 MOD 1kHz E1 5kHz 5 RSSI at 118dBm adjust of Narrow is common with the RSSI at 118dBm adjust Analog Narrow 50 NX 300 ADJUSTME
47. B 57 g ficii I 0 8 m 217 snr ELA f 3 L Ur m i 4 PGND 8 4 L e e s e mE 5 ET Fenes E 5d H e i 5 E HFF 2 s VET 5 ________ 3 PREVENTON e 9 8 exse Sto sm 4 E 8888 RE we E 2 CE al oro zu Exse 4 5 117 thus Side G Roos 2 use SWITCH Sener 73 exse E cy en 2 5 IO 8 2 a1 sos 510514515 La 2 S LK 3 pu 5 m e S out Penis FREQUENCY CONTROL 5 8 oo 5 2 pee E LI 25 E3 mu Be c SUE 11 gp 12 ig mus 100 Pew 2 2 3 Dejo memes 5 as mE asc i i 4 m m BE 2 a 1 5 Betala mem B B i 4 X 3 2 mw m 6 1 f ore o em Era i Ter 8 ale ros 25 10 m 2 ui om Dr REY BARGES m 58 e
48. CHPC C75 CC73HCHIHA7OJ CHPC J CK 8HBIHIDK CHPC 100pF K 461 463 CHPC 470PF CK73HBIENOGK CHPC O OIOUF K 1 K C465 CK SHBIHIDK CHPC CK SHBIEIOSK ODIUFK 18 NX 300 PARTS LIST CONTROL UNIT X53 4260 XX Ref No Address em Parts No Description Destination Ref No Address jag Parts No Description Destination C780 224 OZ22UF RIG RK73HB1J331J CHPR 330 1 16W 781 782 CK73HBOJIOSK CHPC 10UF K R17 RK73HB1J000 CHPR 00 J 1 16W 0785 CKT3HBIAZ24K 0228 K RK73HB1J822 BK J 1 16W C786 CHPC 000 K R19 RK73HBIJ471J CHPR 470 J 1 16W C787 CKI3HBOJIOSK CHPC 10UF K R20 RK73HB1J102 CHPR 10K J 1 16W C788 CC73HCHIHIS CHPC J R21 RK73HB1J122J CHPR 12K J 1 16W C789 7 680 CHPC J 822 24 RK73HB1J102 CHPR 10K J 1 16W C790 CHPC O10UF K 825 RK73HB1J122 CHPR 12K J 1 16W cm CKT3HBIA393K CHPC 00380 828 RK73HB1J102 CHPR 10K J 1 16W C192 CKI3HBOJIOSK CHPC K R27 RK73HB1J104 100K J 1 16W 793 794 CK73HBIAIO4K CHPC O10UF K R28 28 RK73HB1J102 CHPR 10K J 1 16W C195 CKI3HBIEIO3K CHPC O010UF K R30 RKZSHB
49. CHPR 10K J 1 16W Rest RK73HB1J000 CHPR 00 1 16W 8758 RK7SHBIIOW CHPR 100 J 1 16W R835 RK73HB1J153 CHIPR 15K J 1 16W 761 764 RKT3HB1223 CHPR 2 1 16W R836 RK73HB1JA73J 1 16W 8765 RKT3HB1J334 CHPR 330K 1 16W 837 RK73HB1J683J 6 1 16W 8768 RK73HB1000 CHPR 00 R838 RK73HB1J564 SOK 1 16W 8767 1 03 CHIPR J 1 16W 839 RK73HB1J333J CHPR 33K 1 16W 8768 RK7HB1224 220K J 1 16W RK73HB1J123 CHPR 120 1 16W R769770 RKT3HB1J334 CHIPR 3300 1 16W RKT3HBIUS6A 560K J 1 16W 8771 53 CHPR 15K 1 16W 1842 RK73HB1J10Q 100K 1 16W 8775 1 83 CHPR 18K 1 16W RB43 RK73HB1J102J 10K J 1 16W 877 RKI3HB1JA73J 4K J 1 16W RBA RK73HB1J472J CHPR J 1 16W 8778 RK73HB1J333J CHPR 3 1 16W B45 RKT3HBIJIOA CHPR 100K J 1 16W 8778 RKI3HBIJA73J CHIPR 47K 1 18W RB4G RK73HBIJ471J 470 J 1 16W 780 RKT3HBIJIOA CHPR 1 16W RBA7 RK73HB1J182 18K 1 16W R782 RKT3HBIJIOA CHPR 100K 1 16W RB4B RK73HB1J000 CHPR 00 sinew 8783 1 83 CHPR 18K 1 18W RB49 850 RK73HB1J000 CHPR 00 R784 RKI3HBIJIOAJ CHPR 100K 1 16W RESO RK73HB1J000 CHPR 00 swew 8785 RK73HB1682 CHPR GBK J 1 16W 8851852 RK73HB1J683 CHIPR GK 1 16W R786 RKT3HB1J000
50. DOT Deviation Narrow m Tesi THR Deviation UTR Deviation Narrow DIME Deviation TINE Deviation DTME Narrow Wide Singl ons Deviation Sings Tone Deviation TONE Narrow TE Wide WEE Deviation TSK Deviation MSK Narrow MSK Wide Tas EWID Deviation Very Wo Narrow Taso VOX bps TOT VOX Laver TO Vox 5 5 reference level sens Narrow Adjustments SENS sad Adjustments TESTE 21 Vary RASS RASSI Wise RASS Narrow EN E 5 reference level Adjustments ERS EquechiOpeny Sat Narrow E 5 reference level Adjustments ASSL ow EE 19 Narrow wie En E 5 reference evel Adjustments TEST Side 21 E E 5 reference evel Adjustments SAT Narrow E wide E 5 reference level Battery Warning Level BATT a gt Adjustments NX 300 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications 1 Standard Signal Generator 556 Freq
51. To prevent this be sure to turn the transceiver POWER switch off 2 Since the RX AF output is a BTL output there is a DC component Isolate this with a capacitor or transformer as shown in the figure 3 Do not connect an instrument between red or black and GND Universal connector SP MSW ME PF TXD NC Panel tuning 2 RED RX AF OUTPUT 3 BLACK RX AF OUTPUT 5 WHITE MIC INPUT 6 BROWN GND 7 BLUE PTT SW GND 8 YELLOW PF SW 10 BROWN GND L 11 GREEN SM To transceiver muo sw BRN 10 RED 2 100809 AF Voltmeter BLK WHT 3H LE 10v BRN 6 Audio generator PC tuning Connect the wires to the PCB in the connector case of interface cable For output the wires out of the connector case need to process the connector case KPG 36 36A Remove the screw Connector case PCB layout go 10010 8 100 10 AF voltmeter gt H 10 10V El loo 52 Audio generator 5 2 Shield Radio Check Section ADJUSTMENT NX 300 Item Condition Measurement Adjustment Panel test mode PC test mode Test equipment Unit Terminal Unit Parts Method Specifications Remarks 1 Frequency check 1 CHSig 1 1 PTT ON 1 Test Channel Channel 1 Test Signaling Mode Analog Signaling 1 PTT Press
52. Transmit button f counter 2 High power check TCH Sig 1 1 PTT ON Test Channel Channel 1 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button 2 CH Sig 2 1 PTT ON 2 Test Channel Channel 2 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button 3 CHSig 31 PTT ON 3 Test Channel Channel 3 Test Signaling Mode Analog Signaling 1 PTT Press Transmit button 3 Low power check CHSig 1 1 PTT ON 1 Test Channel Channel 1 Test Signaling Mode Analog Signaling 1 Press Transmit button 2 CHSig 21 PTT ON 21 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 Power meter Ammeter Panel 4 sensitivity check 1 CH Sig 1 1 AG 1kHz PTT ON 1 Test Channel Channel 1 Test Signaling Mode Analog Signaling 1 AG TkHz PTT Press Transmit button Deviation meter Oscilloscope AG AF Panel ANT Universal connector Check an internal temperature of radio within 25 C 2 C 0 05 0 55ppm 42425Hz 266 81Hz Q485 1MHz Check 4 5W 5 5W 2 3A or less 0 7W 1 4W 1 4A or less Adjust AG input to
53. get a standard MOD 125mV 5 8mV Note The SSW terminal pin 1 of the universal connector must be connected to GND when checking MIC sensitivity 39 NX 300 ADJUSTMENT clockwise fully Press lt I key to store the adjustment value PC test mode Turn the volume knob clockwise fully Press Apply button to store the adjustment value Condition Measurement Adjustment kem Panel test mode PC test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks Sensitivity 1 CH Sig 1 1 1 Test Channel 556 Panel Check 1298 SINAD or check 556 output Channel 1 Universal more Wide 117dBm Test Signaling Oscilloscope connector 0 320 Mode Analog MOD 1kHz 3kHz Signaling 1 Narrow 117dBm 566 output 0 320 Wide 117dBm MOD 1kHz 1 5kHz 0 320 MOD 1kHz 3kHz Narrow 117dBm 0 320 V MOD 1kHz 1 5kHz Common Section Condition Measurement Adjustment hem Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 1 Setting 1 BATT terminal voltage 7 5V 2 SSG standard modulation Wide MOD 1kHz DEV 3kHz Narrow MOD 1kHz DEV 1 5kHz Z LCD contrast TY Adj item ICNTR 1 Contrast Panel Adjust the LCD This item is Adiusti Press Apply button tuning contrast by looking
54. lt key to store Press Apply All button to the adjustment value store the adjustment value Wary Narrow 1 Adj item INv NDEVI 1 Adj item Maximum 7 2 1363 2 Adjust Deviation NXDN 2 Adj item Very Narrow IPC test mode INvL NDEVI gt 2 Adj item Low Press Apply INvL ILow button to store thel Center adjustment value INvH IHigh after all NDEV High adjustment point Adjust Press Transmit was adjusted PTT ON button Press lt key to store Press Apply All button to the adjustment value store the adjustment value 5 Analog 1 ADEVI 1 Adj item Maximum Write the same 2050 2150 2 Deviation Adjust Deviation Analog adjustment value of adjust 2 2 Adj item Narrow Deviation PC test mode AnL ADEVI gt 2 Adj item Low INarrow for each Press Apply All Narrow gt adjustment point button to store the ADEVI gt Center Transmit at each adjustment value IHigh adjustment point and after all AnH ADEVI High check that the Analog adjustment point Adjust Press Apply All button to deviation is between was adjusted Press key to store store the adjustment value 2050Hz and 2150Hz the adjustment value Deviation meter LPF 15kHz HPF OFF Panel tuning mode PTT ON PC test mode PTT Pre
55. the adjustment value Press Apply Al button to model within the limit of the adjustment point store the adjustment value 1410 specified voltage was adjusted TT Adj item ITAST 1 Adj itemiTTransmit Adjust Assist Note 2 Adj item L TASTI 2 Adj item Low Confirm the VCO IL TASTISIC TASTI gt lock voltage TASTISIH TAST Center approximately 3 Adjust High seconds after the PTT ON RF power IHighl adjustment value is is not output PTT Press Transmit changed Press lt key to store button the adjustment value Press Apply button to store the adjustment value 6 RTC TAG tem 1 Adj item Side1 Panel tuning model oscillation Adjust IRTC Real time clock Press Side1 key frequency After automatic adjust adjustment adjusted value is displayed on LCD Press lt key to store the adjustment value PC test mode Press Start button of Auto Tuning Press Apply button to store the adjustment value after the automatic adjustment was finished 7 Frequency The Frequency TAG item 556 Panel TPC test mode IPC test mode adjust adjustment can be Frequency Press Start button of The value of performed only in SSG output 20dBm Auto Tuning Press IF20 will PC test mode 22 4mV Apply button to store become around CW without the adjustment value 0 after the modulation after the automatic adjust
56. to another by connecting them via their external universal con nectors The operation is as follows the transmit transceiver is the source and the receive transceiver is a target The following data cannot be cloned Tuning data Embedded message with password Model name data ESN Electronic Serial Number data NX 300 REALIGNMENT Key guide on the Read authorization password input screen CONFRM key The password confirmation DELETE 5 key Delete the least digit from the current password number Press and hold to delete all password numbers SELECT key Determine the least digit of the pass word number Press and hold the lt key while turning the transceiver power ON If the Read authorization password is set to the transceiver the transceiver displays CLONE LOCK If the password is not set the transceiver displays CLONE MODE When you enter the correct password and CLONE is displayed the transceiver can be used as the cloning source The following describes how to enter the password How to enter the password using the keypad K3 model only If the x 1 xw key is pressed while CLONE LOCK is displayed the Read authorization password input screen is displayed If one of keys 0 to 9 is pressed while the Read authoriza tion password input screen is displayed the pressed num ber is displayed on the LCD Each press of the key shifts the display i
57. 300 Adjust 2 Adj item AwL AwL ADEVI AWC ADEVI gt IAwH IAwH ADEVI Adjust Press lt key to store the adjustment value Deviation Analog Wide 2 Adj item Low ILow Center IHigh High Press Apply Al button to store the adjustment value adjustment value of NXDN Deviation INarrow 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 Condition Measurement Adjustment Panel tuning mode test mode Unit Terminal Unit Parts Method Specifications equipment Remarks 4 NXDN 1 Adj NDEVI 1 Adj item Maximum Deviation Panel ANT Panel Panel 3056Hz 2995 3117Hz Deviation Adjust Deviation NXDN meter tuning adjust 2 Deviation meter Narrow Oscilloscope mode IPC test mode LPF 3kHz Deviation meter AL Press Apply All Narrow HPF OFF LPF 3kHz button to store the 2 Adj item HPF OFF adjustment value INnL 2 Adj item Low IPC test after all INnL model adjustment point INnC Center was adjusted INnH NDEVI gt IHigh INnH NDEVI IHighl Adjust Press Transmit PTT button Press
58. 74 TCIWS3FKI MOS IC C535 CS77AAIVRISM CHIPTNTL 0 5UF 35W C536 CC73HCHIHA70J CHPC J ns 585188 Te7swstFKiF C537 CC73HCHIHOSOB CHPC 50 C539 CSTTBAIDIOOM CHIPTNTL 10UF 20W a 2SA1362 F1GR TRANSISTOR 082 0883 05 CHIPTNTL 00470 39V 25006175 TRANSISTOR 083 07875 CERAMIC O 1UF SOW SSMGKISTEF FET CC73HCHIHO30B CHPC 05 25J347F FET 2SA1832 GRIF TRANSISTOR CK73HBIHA72K CHPC 4700PF K 547 548 CC73HCHIHIOIJ CHPC 100PF J 0102 28046175 TRANSISTOR C550 CC73HCHIHOSOB CHPC 0 0103 SSMGKISTEF FET C553 CC73HCHIHI00B CHPC 10 0401 402 SSMSNIGFEF FET C554 CC73HCHIHA70J CHPC APF 1 0403 2SA1955A F TRANSISTOR 0404 SSMGKISTEF FET C555 CHPC 10UF K 556 589 CK7SHBIHATIK CHPC 4JPF 0405 ssmenieree FET 0562 10UF K 0406 28811320R TRANSISTOR 0568 CC73HCHIH270J CHPC J 0407 UMG3N TRANSISTOR 566 CCT3HCHIHSBO CHPC J 0408 TRANSISTOR 0409 2SA1955A F TRANSISTOR 567 568 CC73HCHIHORSB CHPC OSPF C570 CC HCHIHR SB CHPC 0758 B ono SSMGKISTEF FET cs CC73HCHIH040B CHPC 22 Note 1 This part cannot be replaced Therefore this part is not supplied as a service part NX 300 PARTS LIST TX RX UNIT X57 7370 10 Ref No
59. ANI board 21 VGS 1 ANI board 22 RXEO VGS 1 board 23 RXEI VGS 1 board 24 TXI VGS 1 ANI board 25 6 VGS 1 board At Switched B output 26 POW VGS 1 Note POW and 5V can not be used simultaneously 63 c D E F G H 1 J 300 PC BOARD CONTROL UNIT 53 4260 10 11 Component side view J79 0131 19 Ref No Address Ref No Address Ref No Address 1C1 6K D4 7M 1415 8K 05 5 015 7L a 7K D6 7 1 02 7L D7 10 07 9 6L 100 pie a Q4 D9 7 m a 05 a pio 7c 020 D1 5D D11 7L D21 8M D2 sc 02 M 02 8 D3 30 2 N BOARD 300 CONTROL UNIT 53 4260 10 11 Component side view J79 0131 19 D
60. APC O APC control output 40 APCSW APC switch control output 41 VCO VCO modulation output 42 THP Thermistor voltage input 43 PLD 1 PLL lock detect input NX 300 TERMINAL FUNCTION PinNo Name Function PinNo Name Function 44 RFAGC RF AGC control output 22 45 SCK1 PLL clock output 23 Refer to CN710 26 pin 46 GND GND 24 TX connector specification 47 5 DET Battery select input 25 6 described on pages 56 to 59 48 GND GND 26 POW 0 49 NC No connection 50 IF DET TX RX unit 57 7370 10 A 2 06 Pin Name 1 0 Function 1 ssw EXT INT speaker switch input CN900 2 BTL output for external speaker 1 LED_G Green LED control input 3 SP 0 BTL output for external speaker 2 EMG Key matrix input Emergency Orange key 4 MSW MIC switch input LED_R Red LED control input 5 EMC External MIC input 4 switch control input 6 ME External MIC GND 5 SAVE 50 Reg control input 7 External PTT input 6 i2cck TCXO thermometer clock
61. Address jag Parts No Description Destination 8740 00 J1 16W RBI3 RK73HB1J273J CHPR J 1 16W 8741 RKT3HB1JA74J J 1 16W R814 RK73HB1J564 J 1 16W 742 743 1 03 CHPR J 1 16W RBIS RKT3HBIJIOA CHPR 10K J 1 16W 8744 RK73HB1J223J CHPR 2 1 16W R816 RK73HB1J683 CHIPR 68K 1 16W 8745 RKT3HB1J682 CHPR 68K 1 16W RBIB RKT3HBIJIOA 10K J 1 16W 8746 563 CHPR 56K 1 16W 819 820 RK73HB1J103 10K 1 16W 8747 RK73HB1J333J CHPR 33K 1 16W R821 RKT3HBIJIOA CHPR 100K J 1 16W 8748 1 03 CHPR 10K J 1 16W 822 823 RK73HB1J103J 10K 1 16W 8748 RKI3HB1JA72J CHPR J 1 16W R824 RK73HB1J393J CHPR 39K 1 16W 8750 RK73HBIJIO3J CHPR 10K 1 16W R825 RK73HB1J104 100K J 1 16 751 RK73HB1000 CHPR 00 J1 16W R826 RK73HB1J334 CHIPR 330K J 1 16W 8752 RATSHBIIOW CHIPR 100 1 16W 887 RKTSHBIJIBA 180K J 1 16W 8753 RK73HB1U683 CHPR 68K 828 829 RK73HB1J000 CHPR 00 1 16W 8754 RIT3HBIUSGA CHPR 560K J 1 16W 830 RKT3HBIJIOS CHIPR 10M J 1 16W 8755 RKT3HBIJIOA CHIPR 10K 1 16W 9831 RK73HB1J474 CHPR 470K J 1 16W 8758 RKI3HBIJIOIJ CHPR 100 J 1 16W 832 RK73HB1J473J 47K J 1 16W 8757 1223 CHPR 2 1 18W R833 RK73HB1J684 GBOK 1 16W 8758
62. CA C e E id me s OS lenem om sc rens 59 28 C916 47 mI Ta 19 di Tees s Tem os d Temm v omo mio 3 16 nes ir Ten n 5 E e lt ul Tus E 8 CONTROL E EO mew Em E TC7SSSIFEIF E o SWITCH 5 2038 0925 8 e R 4STV d mon T 425V a mone R 3285V T 2 T 594mV 2 2 T Ln 5 AST 3522 A gms im a 9 1 Ex DU uem C ERE 5 x5 Siron EE com R amp SmV EET Kur 3 Side 2 id 0931 ae x m DSW C933 6 0935 47 MOD C XD 75 0937 47 s X son E 5 47 SDET 0941 47p mm 4 NC HT E 29101009 i vn conan ale 5 cess 1 5 3 punt 82 X87 737 A2 1 4 BD BE BF BG BH SCHEMATIC DIAGRAM INX 300 UNIT 57 7370 10 2
63. Ref No Address Ref No Address Ref No Address Ref Address Ref No Address Ref No Address 1703 7P 0703 D511 48 0601 so 0706 8 12 IC903 70 0601 7N 0705 10F 554 40 0606 0708 8 0508 5 0602 0706 10E 0515 4P De 56 0709 6G 0509 4N 8D D516 48 0702 10 070 0 7R asos 4 0506 0517 48 0703 om oF 0511 6R 0700 9R D507 40 0519 5R 0704 10H 13 0512 70 100 050 40 060 7M 0705 10E 71 z 8 8 s 8 5 8 2 CELLE 1 A Bd Dt0 0101 103 qu IKEY BACKLIGHT SW mue 2 2222 pun p 3 pus 3 TED BACKLIGHT SW 05 m 8 4 t RESET m 855221505 855221505 95215 05 EAE EET
64. Tone or LTR ID is OK LOK Conv L TX Complete H Not TX Complete LTR L TX Link Complete until TX finishes H Not TX Link Complete VGS 1 BUSY BUSY indication ANI board 1 KEY TX requirement input 2 VGS 1 PLAY PLAY indication ANI board 3 26P_RD VGS 1 50 Serial data input ANI board 4 26P TD VGS 1 SI Serial data output 5 NC ANI board PTT signal output 6 VGS 1 Enable board 7 OPT10 VGS 1 USEL UART speed select output ANI board Emergency signal output 8 pes gency gency sig pi VGS 1 RST Reset output ANI board A GND 9 DGND VGS 1 DGND DGND ANI board A GND 10 AGND VGS 1 AGND AGND 11 NC 12 NC ANI board A GND 13 AGND VGS 1 AGND AGND s ANI board Note POW and 5V can not be used simultaneously VGS 1 5 5V power supply board 1 Sidetone Sidetone input 15 OPT9 VGS 1 62 NX 300 TERMINAL FUNCTION PinNo Name Device 1 0 Conection Function board Data Out Data signal input 16 DTI VGS 1 board Tone Contro Speaker mute signal input 17 VGS 1 ANI board Man Down Man Down output 18 11 VGS 1 board MIC Mute MIC mute signal input 19 VGS 1 ANI board AuxOutput Emergency signal input 20 OPT2 E ae VGS 1
65. adjustment of Analog Narrow 35 NX 300 36 Panel tuning mode flow chart Panel Test Mode UT ADJUSTMENT TED Contrast CNTA dusmentam LCD Display Tas Volume TICCW For all adjustment Rome press the TZ T key the adjustment value FeO Volume ZEW Max ence level Tow 5 Adjustment Paint var Adjustments LCD Display 51 BX Assit pemer RAST Tex L5 5 reference level Adjustments 6 2 5 reference level Tah Narrow Adjustments gt Tam Power SL ER Narrow nen Adjustments exit Balance manos El Sreference level Bat Adjustments NXDN Deviation Nasce NDEV NDEV Adjustments Analog Max Deviation Analog Deviation Narrow AW mm s gt Ipress faci E E OT Deviation OT Deviation Narrow Wide Testa DOT Deviation
66. appears e gt Beat shift on off On lt icon appears Orange Function off PTT Transmit 10 to 19 Function off 36 LED indicator Red LED Lights during transmission Green LED Lights when there is carrier Sub LCD indicator FNC Appears at function on LCD display in panel test mode Temperature a 325 505 201 2101 Signaling Channel Squelch level Analog mode only An Analog narrow mode Aw Analog wide mode Nn narrow mode Nv NXDN very narrow mode Sub LCD display ADJUSTMENT 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 NXDN mode signaling NX 300 Test frequency CH RX MHZ TX MHz 1 485 05000 485 10000 2 450 05000 450 10000 3 519 95000 519 90000 4 485 00000 485 00000 5 485 20000 485 20000 6 485 40000 485 40000 7 16 Analog mode signaling No RX TX 1 None None 2 None 100Hz Square Wave 3 LTR Data LTR Data AREA 0 GOTO 12 AREA 0 GOTO 12 HOME 12 HOME 12 10 47 FREE 25 10 47 FREE 25 4 67 0 2 67 0Hz 5 OT 151 442 151 4Hz 6 OQT 2107Hz 210 7Hz 7 OT 254 1Hz
67. commercial grade communications equipment It contains all required service information for the equipment and is current as of the publication 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 information 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 required component for proper identification PERSONAL SAFETY The following precautions are recommended for personal safety DO NOT transmit until all RF connectors are verified se cure and any open connectors are properly terminated SHUT OFF and DO NOT operate this equipment near elec trical blasting caps or in an explosive atmosphere This equipment should be serviced by a qualified technician only SERVICE This transceiver is designed for easy servicing Refer to the schematic diagrams printed circuit board views and alignment procedures contained within License and frequency allocated by FCC _ Frequency range MHz RF power keypad 450 520 5W NX 300 K No Choose the type of transceiver 7 4 1 TX RX 450 520 5W A personal computer IBM PC or compa
68. input 8 PF Programmable function key input 7 BTC Reg switch control input 9 OPT VO Option interface 8 I2CSDA TCXO thermometer data output 10 E GND 9 SBC 83 switch control input 11 5 5V output 10 1 TX RX control input 12 TXD O Serial data output 11 m2 RX tuning voltage 2 control input 13 RXD Serial data input 12 ASSIST VCO tuning voltage control input 14 NC connection 13 RX tuning voltage 1 control input CN701 for production 14 VAGC AGC voltage output 1 20 15 switch control input CN710 16 TCXO TCXO modulation input 1 yo 17 GND GND 2 OPTS 1 0 18 RSSI RSSI voltage output 3 26P_RD 19 GND GND 4 26 0 20 CV voltage output 5 NC 21 GND GND 6 22 NC No connection 7 10 o 23 NC No connection 8 5 o 24 B O Power output after passing through the fuse 9 AGND B 25 B O Power output after passing through the fuse 10 AGND Referto CN710 26 pin 26 B Power output after passing through the fuse 11 1 connector specification 27 B O Power output after passing through the fuse 12 described on pages 56 to 59 28 NC No connection 13 AGND 29 NC connection 14 o 30 GND GND 15 OPTS PTT output 16 DTI 32 Side_G I Key matrix inpu
69. of the 33M DSP If the voltage becomes normal the FLASH is broken 33M L712 15 1711 FLASH 15M has an abnormal voltage 33M L717 ASIC ISRAMI Remove 171510 check the voltage of the 15M 31BU L710 If the voltage becomes normal the ASIC is broken DSP When a normal value Remove 1711 to check the voltage of the 15M Checking the clock is confirmed If the voltage becomes normal the DSP is broken Checking the clock has an abnormal voltage When abnormal asic Points to be checked Normal voltage 3 3V value is confirmed Remove L716 to check the voltage of the 18 432MHz ASIC side R158 18 432MHz DSP side 159 18 432MHz 32 768kHz 106 1 pin 32 768kHz If the voltage becomes normal the ASIC is broken 31BU has an abnormal voltage SRAM Checking the When a normal value Remove L710 to check the voltage of the 31BU Reset Control signal is confirmed If the voltage becomes normal the SRAM is broken Checking the control signal input to the ASIC If the voltage is not corrected there is a problem other than the BGA parts Points to be checked Normal voltage RESET 1 105 4 pin 3 3V When an abnormal BINT Q401 6 pin 3 3V value is confirmed PSW 0402 3 3 3 The BGA parts are not broken When a normal value Yis confirmed Checking the control signal output from the ASIC When an abnormal If the FRST is always OV the ASIC is broken value is con
70. 0 3000 Hz Output Amplitude 1kHz 60 deviation 450 640 830 mVp p Coupling Capacitor 0 1 uF 22 RXEO O Analog Output Impedance 2 2k Q Allowable Frequency 300 3000 Hz Input Amplitude 1kHz 60 deviation 450 640 830 Coupling Capacitor 0 uF 23 RXEI Analog RA Input Impedance 22k Allowable Frequency 300 3000 Hz Input Amplitude 1kHz 60 deviation while external MIC 160 260 360 while internal 130 24 TXI 1 Analog Coupling Capacitor 01 uF Input Impedance 22k Allowable Frequency 300 3000 Hz Output Voltage 5 v 14 5V Power Output Current 78 mA Output Voltage 75 26 o Power Output Current 100 mA 9 Allowable current value 10 AGND GND 100 mA 45 Total current of 3 pins 5 NC 57 NX 300 TERMINAL FUNCTION CN710 26 pin connector specification Name Device 1 0 Conection Function COR Conv LTR L Not activity receiving H Activity receiving TOR Conv LTR L Not activity receiving ANIboard 0 Aux Input H Activity receiving Sub Tone or LTR ID is OK LOK Conv L TX Complete H Not TX Complete LTR L TX Link Complete until TX finishes H Not TX Link Complete VGS 1 BUSY BUSY indication ANI board 1 KEY TX requirement input 2 VGS 1 PLAY PLAY indication
71. 0 CK 3GBIEIOK CHPC 10UF K 0739 CHPC amp PF C631 0877 CHIPTNTL 68UF 10V 740741 CHPC 0 010UF K C632 CKI3HBIHATIK CHPC 4XPF C742 CKI3FBIAA7SK CHPC 4XUF C743 CHPC 634 637 CKT3HBIHATIK CHPC 470PF K C639 CC73HCHIH390J CHPC 39PF J 744 745 CK73HBIHA7IK CHPC 470PF K C640 CHPC J C746 CHPC coat CHPC 10F C C747 CHPC B C642 43 7 181 CHPC 150PF J CK7SHBIHTIK 4JPF K CHPC 20 C645 CHPC O10UF K C646 CKT3GBIEISK CHPC 10UF K C750 CKT3HBIC10K CHPC O0I0UF K C647 93 0941 05 CERAMIC 18 50 CHPC wr B C648 849 CHPC 0100 0752 CK73HBIHA7IK CHPC 470PF C650 93 0937 05 CERAMIC 12 SOWV C753 CHPC _ 20 B C754 CC73HCHIHO30B CHPC C651 CKT3HBIHA7IK CHIPC 470PF C652 93 0951 05 CERAMIC A7PF SOWV C755 CHPC B 0853 CK73HBIHA7IK CHPC 470PF C756 CC73HCHIHOSOB B C654 93498745 CERAMIC 7 5PF SOW 0758 CK7GMBIATIK CHPC 470PF K C660 CC73GCHIHIMJ CHPC 1
72. 00 CHPR 00 831 432 RK73HB1000 CHPR 00 J 1 16W R609 RK73HB1J000 CHPR 00 1 16W 8500501 RNT3HHIJIOAD CHPR 100K D 1 16W R610 RK73HB1J472 47K J 1 16W 8502 RK73HBIJ124J CHPR 120K J 1 16W R612 RK73HB1J472 CHPR 4K J 1 16W R503 RKT3HBIJIOO CHPR 10 R616 81 180 J 1 16W R617 RK73HB1J331J 330 1 16W R504 RKT3HBIJIOA CHPR 100K 1 16W 8505 RKT3HB1000 CHPR 00 J 1 16W R618 RK73HB1J220 22 1 16W R506 RKI3HBIJA73J 47K 1 18W R620 RK73HB1J000 CHPR 00 1 16W R511 514 031 CHPR 10 J1 16w R622 RKZSHBIJIDI 100 J 1 16W R515 RKI3HB1JA72J J 1 16W 8623 1 03 10K 1 16W R624 RK73HB1J473 4K J 1 16W R519 RKI3HBIJIOOJ CHPR 10 R520 RKI3HBIJ102J 10K J 1 16W R626 RK73HB1J121J CHPR 120 J 1 16W 521 822 RK73HBIJIOOJ CHPR 10 J 1 16W 627 628 RK73HB1J000 CHPR 00 1 16W R523 RKI3HB1IJ102J CHPR 10K J 1 16W 8628 RK73HB1J273J CHPR 27K 1 16W 8527 CHPR 00 J 1 16W R630 AK73HB1J333 CHIPR 3K J 1 16W R631 RK73HB1J470 47 J 1 16W R529 RKI3HBIJ102J 10K 1 16W R530 RK73HB1JA73J CHPR 47K J 1 16W RK73HB1J103 10K J 1 16W R531 RK73HB1J683J CHPR 6K 1 16W R633 RK73HBIJ0IJ 100 1 16W R532 RKT3HB1J000 CHPR 00 R634 RK73HB1J000 CHPR 00 J 1 16W R53
73. 00PF J 759 760 CK7SHBIAIO4K CHPC O10UF K C761 CK73GB1E105K CHPC 10UF K C661 CKT3HBIHATIK CHPC 470PF C662 CHPC 10PF C764 CC73HCHIHIRSB CHPC 15PF B C663 CC73GCHIHIMJ CHPC 100PF J C765 CHIPC 470PF K C664 CHPC 40PF C766 CK7aGBIHI04K CHPC K C665 CC736CH1H020B CHPC 20 C767 7 08 CHPC B C768 CHPC 10PF C666 CC73GCHIHOSB CHPC C667 CC73GCHIHIRSB CHPC 15 CHPC 470PF K 23 NX 300 PARTS LIST TX RX UNIT X57 7370 10 Ref No Address _ Parts No Description Destination Ref No Address in Parts No Description Destination 0770 CHPC 40 0870 871 CKI3HBIHIO2K CHPC 1000PF K cm CKIHBIHATIK CHPC 470PF 0872 874 ck7acBietosk CHPC K CHIPC 80 0875 08348875 CERAMIC 7 5PF SOW C773 CC73HCHIHOIOB CHPC 10 B C976 CC73HCHIHA7OJ CHPC APF J _ CHIPC _ 075 CKI3HBIHAIK CHPC 470PF 23376 05 TERMINAL CHIPC CN737 40 6358 05 SOCKET FOR PIN ASSY 0777778 CKI3HBIHATIK CHPC 4JPF CN900 00642215 SOCKET FOR PIN ASSY cng
74. 03 sc 1 90 066 3 065 al 13 16504 7H 16902 5N Q607 0904 90 D608 5 13 1 600 4 0503 78 a 0906 an D700 6 14 68 69 14 1 J K 3 N o j m s NX 300 PC BOARD Pc BOARD NX 300 TX RX UNIT X57 7370 10 A 2 Foil side view J79 0128 19 A 2 7 TX RX UNIT X57 7370 10 A 2 Foil side view J79 0128 19 A 2
75. 03 HOLDERIVOL CH cat CHPC 100PF J 2A J19 5507 02 HOLDER OP BOARD C101 104 CK7SHBIAIO4K CHPC O1QUF K 45 121857904 MOUNTING HARDWARE FG SP HOLDER 0105 CK73HBOJIOSK CHPC 10UF K 46 1c 11907306 BELT CLIP ACCESSORY C106 CK73HBIEI03K CHPC 0100 b 28 30 1296 04 SPACER VOL 0107 CK73HBIATMK CHPC K K 48 28 87 0006 05 FPC LEAD FREE VOL CH 107 108 CKTSHBIAIAK CHPC K 49 38 J87 0007 05 FPCILEAD FREE UNIVERSAL 109 110 CHPC 100F 50 B J99 0390 04 ADHESIVE SHEETI6KEY FPC 0111 113 CKT3HBIA1OAK CHPC O10UF K 52 990711404 ADHESIVE SHEETIPTT FPC C114 CK73HBOJIOSK CHPC 10UF K 53 99071244 ADHESIVE FPC C115 CKI3HBIHATIK CHPC Ka 54 1A J99 0714 04 ADHESIVE 116 117 CHPC 010UF K 55 38 499071508 ADHESIVE SHEETIUNIVERSAL 118 119 CKI3HBOJIOSK CHPC 1QUF K 56 499072504 ADHESIVE SHEET TERMINAL BLOCK 120 121 CK7SHBIAIO4K CHPC O10UF K 57 3A 52001 03 PUSH 122424 CK7SHBIEO3K CHPC 0 010UF K 58 1 K29 9405 03 C130 CKI3HBIEIO3K CHPC 0010UF K 17 NX 300 PARTS LIST CONTROL UNIT X53 4260 XX Ref No Address pem Parts No Description Destination Ref No Address in Parts N
76. 05636 P 38 1801 85 mmg 28052897111 88 SSMGLOSFU 10503 ses 88 LMC71018I 8 assist SSMSHOITU LPF 4 1 901 XC9101D09AKR DCDC 0700 28C5108 Y F Converter 1806 10902 gt gt TKtt250cUCB Am D E CF700 450kHz 50R BPF ISAVE 10700 MCP6021 E10T 450kHz 25 4215 1090310717235 AR gt 330 44 BPF My 1 701 Mt 44 TK10931VTL G 3902 SSM6LO5FU sw son gt X E 01803 SSMsLosFU 2 52 oc sw gt or 85 55 ye ve g 5g 5 8 58 DSA1955A F 4 DCSW EMG 583 ISTC 1ca00T75851FE E 8 Ly 5 RSSI THP VAGG CV 8 1 8 8 DC sw EMG LED_R LED_G 5 IDSW APCSW ASSIST TV1 TV2 T_R LED R Side 1 Side 2 Side 0 LED G NX 300 BLOCK DIAGRAM ITX RX 450 520MHz 606 607 VY 600 601 0601 0708711 25056368 25 077 81 RDO7MVSIB Pre Pre TR Drive Final ANT sw De gt e LO 1 5 5 0604 2805383 1111 sw sw JAPCSW Y r 16800 DSW TA75WO1FUF LPF
77. 0J CHPR 00 1 16 449 452 RK7SHBIJA74 CHPR J 1 16W 8709716 RK73HB1J000J CHPR 00 1 16 R453 RK73HB1J104J CHIPR 100K J 1 16W R716 RK73GB2A000 CHPR 00 1 10W 72 RK7SHBIJA74 CHPR J 1 16W 8717 722 RK73HB1J104J CHPR 1000 1 16 8455 RK73HB1J102 CHIPR 10 J 1 16W 8723 RK73HBIJI0S CHPR 10 J 1 16 RK73HB1JA74J CHIPR 470K J 1 16W RIA RK7SHBISIOQ CHPR 10K 1 16 RIS 458 RK73HB1J104J CHPR 10K J 1 16W 8725 RKI3HBIJ1OO 10 J 1 16W 459 460 RK73HB1J102 CHPR 10K 1 16 8728 RK7SHBISIOQ CHPR 1 16 RK73HB1J103J CHPR 30K 1 16 8727 128 AK7SHBIJI0S CHPR 10M 1 16 R462 CHIPR 10K J 1 16W 8730 ROSHBLATI CHPR 4 0 J 1 16W DI RK7SHBIJIOQ CHIPR 100K 1 16 8731732 RIUSHBJIS CHPR 10M 1 16 RK73HB1J474J CHPR 470K J 1 16W 8733 RK73HB1JA73J 47K J 1 16W RAS 466 RK73HB1J103J CHPR 10K 1 16W 8738 RK73HB1JA73J J 1 16W R467 RK73HB1J104J CHIPR 100K J 1 16W 8738 RK73HB1J823J CHIPR 1 16 468 RK73HBIJ000 00 1 16 8737 RKI3HB1J1S3 15K 1 16 RK7SHBIJA74 CHIPR 470K J 1 16W 8738 RK73HB1J563J CHPR 5 1 16 R470 RK73HB1J683J J 1 16W 8738 RK73HB1J823J 1 16W 20 NX 300 PARTS LIST CONTROL UNIT X53 4260 XX Ref No Address Parts No Description Destination Ref No
78. 1 i Senk IC404 __ 33M _ ASIC DSP AVR Flach LCD DRV 1 1 1C414 IC405 15 1 T Detect AVR ASIC DSP core 1 1c406 __33A_ ASIC Analog AVR gt Audio 1 1 1 581 0402 PSW ic108 1 p 1 Lvl Conv ASIC BINT AND Lvl Conv 0408 gc D412 1 586 1 1 1 1 1 Fig 8 Power supply circuit 8 Signaling Circuit 8 1 Encode OT DOT LTR DTMF 2 tone MSK Each signaling data signal of QT DOT LTR DTMF 2 tone and MSK is generated by the DSP circuit superposed on a modulation signal and output from 1 108 The modulation balance of the QT DOT LTR signal is adjusted by the D A converter 1C703 and the resulting signal is routed to the modulation input of the VCO and VCXO X500 Each devia tion of the TX DOT LTR DTMF and MSK tone is adjusted by changing the output level of IC108 and the resulting signal is routed to the VCO and VCXO The RX DTMF tone is routed to the receive audio signal system and is output from the speaker 8 2 Decode OT DOT LTR DTMF 2 tone MSK The audio signal is removed from the FM detection signal sent to the DSP circuit and the resulting signal is decoded 9 Compander Circuit The term compander means compressor and expander The compander reduces noise by utilizing a compressor and an expander The transceiver contains a DSP IC102 to per form this operation The transc
79. 1 16W RK73HBIJ1O5J CHPR 10M J 1 16W R2 RKT3HBIJIOA CHPR 1000 J 1 16W RIZSHHIJIMAD CHPR 10K 1 16W RKI3HB1J123J X 1 16W 8165 RKT3HBIJIO2J 10K 1 16W RA 10 RK73HBIJI03 CHPR 10K 1 16W RI66 RK73HB1J104 100K J 1 16W m RKI3HBIJIOAJ CHPR 1000 1 16W 8167 RK73HB1J102J 10K J 1 16W R168 RK73HB1J000 CHPR 00 1 16W RK73HBIJIO8 CHPR 10K RKT3HB1JA72J CHPR 1 16W R170 RK73HHIJ103D 10K D 1 16W RIS RK73HB1000 CHPR 00 J 1 16W 817173 RK73HB1J000 CHPR 00 1 16W 19 NX 300 CONTROL UNIT X53 4260 XX PARTS LIST Ref No Address _ Parts No Description Destination Ref No Address in Parts No Description Destination 8174 18 RK7SHBIJIOA CHIPA 100K J 1 16W RK73HB1JO00J CHP 00 J VI W 180 181 RK73HB1J104J CHPR 10K J 1 16W R472 RK73HB1J223J 22K J 1 16W R182 RK7SHBIJA74 CHIPR 470K J 1 16W R473 RK73HBIJ332 CHPR 33K J 1 16W R183 RK73HBIJ104J CHIPR 100K J 1 16W 474 475 RK73HB1J333J CHPR 1 16 RK73HBIJA73 CHIPR 1 16 477 478 AK73HB1J000 CHPR 00 J 1 16W R185 10 10M J 1 16W RIT RK73HB1J102J 10K J 1 16 R186 RK73HB1J473J CHIPR J 1 16W REO RK73HB1J273J 2K J 1 16W R187 RK7SHBIJI020 CHIPR 10K J 1 16W RABI RK73HB1JA74J CHPR 4
80. 1 16W R424 RK73HHIJ683D 68K D 1 16W R512 RK7SHBISIOW CHPR 100 J 1 16W R425 RK73HH1J333D 33K 1 18 8513 515 RK73HB1J102J 10K J 1 16 426 429 RK73HBIJ000 CHIPR 00 1 16 R516 RITSHBLJIDI CHPR 100 J 1 16 9431 RK73HB1J474J CHPR 470K J 1 16W R517 RK73HB1J102J 10K J 1 16 432 433 AK73HB1J000 CHIPR 00 J 1 16W R518 RK73HBIJIOIJ CHPR 100 J 1 16W RK73HB1J393J 39K 1 16W R519528 RK73HB1J102J CHPR 10K J 1 16 435 436 RK73HB1J104J CHIPR 100K 1 16W 529 531 RKI3HBIJIOI CHPR 100 1 16 R437 RKI3HBIJATIJ CHPR 470 J 1 16W R532 RK73HB1J102J CHIPR 10K J 1 16 R438439 RK73HB1J104J CHIPR 100K J 1 16W 533 535 RK73HBIJIOIJ CHPR 100 1 16W RK73HB1J000J CHIPR 00 J 1 16 536 540 RK73HB1J102J CHPR 10K J 1 16W RK73HB1J153J 15K 1 16 RK7SHBISIOW CHPR 300 1 16W RK73HB1J102 CHIPR 10 J 1 16W R542 RK73HB1J102J CHPR 10K J 1 16 RK73HB1J474J 470K J 1 16W R543 RK73HBIJIOIJ CHPR 300 1 16 RAM RK73HB1J564J 860K J 1 16 R544 RK73HB1J102J CHIPR 10K J 1 16 8445 RK73HB1J154J 150K J 1 16W R545 RSHBIJIUI CHPR 100 J 1 16W RK73HB1J274 CHPR 270K J 1 16W 546 547 RK73HB1J102J CHPR 10K 1 16W RK7SHBIJI0Q CHIPR 100K 1 16 548 549 RK73HB1JA73J CHIPR 4K J 1 16W RK73HB1J103J CHPR 30K J 1 16W 701 707 RK73HB1JO0
81. 23J CHPR EX 1 16W 8812 RK73HB1J562J 56K 1 16W 0703 708 RB7O6F 40 DIODE If a part reference number is listed in a shaded box that part does not come with the PCB 21 NX 300 CONTROL UNIT X53 4260 XX TX RX UNIT X57 7370 10 PARTS LIST Ref No Address pem Parts No Description Destination Ref No Address in Parts No Description Destination 0707 04221 DIODE Qu SSMENIGFEF FET 1 1 71018 5 MOS IC 0412 SSMBKISTEF FET Note 1 ROM IC 0413 2SA1955A F TRANSISTOR 1c102 Note 1 MICROPROCESSOR IC 044415 TRANSISTOR 10103 Note 1 SRAM IC TCISHOBFUF MOS IC 2SA1832 GRF TRANSISTOR 0702703 SSM3KISTEF FET 1c105 XC6109C29ANN ANALOGUE IC 25006175 TRANSISTOR RVSC3B6A 0705 2SC4738IGRF TRANSISTOR 1107 SM5023CNDH 6 0706 28 18 TRANSISTOR 1C108 Note 1 1c109 TCISHOBR F MOS IC 0707 252043 FET To7aucxzasrK TH ERTJOEVIO4H THERMISTOR 1c402 TC7WZ24SFK F THO ERTJOEVIO4H THERMISTOR 1403 1 MOS IC 10404 XC62048332M MOS IC TX RX UNIT 57 7370 10 16405 XOS20SBIS2PRN ANALOGUE D900 830 2278 05 LED RED YELLOW 123 XCB2048332M MOS IC 16407 LTIGIGESEPBE ANALOGUE IC C500 CK73HBIAIO4K CHPC K TCUSSSIFHE C501 CC
82. 25 v Allowable Frequency 300 3000 Hz EXT INT MIC switch input 4 MSW Digital L External MIC VIH 28 53 v H Internal MIC ON VIL 0 0 5 Audio Level 77 12 5 173 STD deviation 5 EMC Analog External MIC input DC Bias 33 v Allowable Frequency 300 3000 Hz Input impedance 18 6 External MIC GND External input 28 53 v 7 PTT Digital L PTT ON VIL 0 07 v V PF2 key ON 2 2 28 v 8 PF Analog Programmable function key input V key ON 17 22 v V PF1 PF2 key 13 17 v t 1 down input 28 53 v Programmable active H L VIL 0 07 v 10 E 5V power supply output Output Voltage 4 9 5 0 5 1 v 11 5V Power Output control is FPU lout 100mA programmable Maximum Current 02 5 4 0 53 v 12 TXD O Digital Serial data output VOL lo 5mA 0 08 v Baud Rate 19200 bps VIH 2 8 53 v 13 RXD Digital Serial data input VIL 0 v Baud Rate 115200 bps 14 _ _ Notused reserved for future option 55 NX 300 TERMINAL FUNCTION CN710 26 pin connector specification Rating and Condition Pin Name Signal Type Parameter Min Typ Max Unit Unput 1 OPTI VIH 28 33 6 VIL 0 05 8 opts WO Digital Output 17 28 35 18 11 VOL 0 05 In
83. 2K 1500PF K CK73HBIAIOAK CHPC OIOUF_K cng CK73HBIATOAK CHPC O10UF K 403 406 CS77APIC2R2M CHPTNTL 220 16W C720 CKI3HBIE10K CHPC ODIUFK CK SHBIAIMK CHPC O10UF K 6 407 408 CK73HBIHIO2K CHPC 1000PF K cm CHPC ODIUFK 409 412 K C723 CK73HBIAIOGK _ CHPC O10UF K CK73FBIATOSK C724 CHPC 0Dl0UFK 108 K C725 OC BHOHIEIB CHIPC 180PF J 726 727 CK73HBIAIOGK _ CHPC O10UF K cats CS77APIAI0M CHIPTNTL 100 10 C418 CK73HBIH33IK CHPC G3PF p CC73HCHIH221J CHPC 220 J C730 CK73HBIH33IK CHPC 3G3PF CHPC O OIOUF 0731732 00100 CKIFBIEAISKK K CK73HBIH102K CHPC 1000PF K C735 CK73HBIH122K CHPC 1200PF CHPC O OIOUF K CK73HBIES82K CHPC 0736737 CK73HBIAIOGK _ CHPC O10UF K C422 CHPC WF C738 CK73HBIHIO2K CHPC 100PF K 040425 CK73HBIAIOGK CHPC 030UF C739 CK73HBIES82K CHPC CK73HBIENOGK CHIPC O OIOUF K C740 CK73HBIHIO2K CHPC 100PF K C742 CK73GBIEI0SK CHPC K 7
84. 3 4260 XX Control unit Lio cir renes rop m DUC Converor E ae cuo scene Jaa E m LM DSP NEF soo ienn 4 reser 4 B Ex AR To7wz2asrk F BUS SW mn 4 H 4 const xs Door EE Em cus E E Dosw E E ES 1 E 22 22 1 EL E 8 incur E Ta DAC Loi 12105 va 4 lt Q Volume XOBI00G20ANN e 5 IF DET ICAOS CZEEZMIM ENC Selector lt E EZ Am GEH 410
85. 3 RKT3HHIJIBAD CHIPR 180K D R635 RK73HBIJ561J CHIPR 560 1 16W R636 RK73HB1J221J 220 J 1 16W 8534 RK73HH1J473D CHIPR D 1 16W R535 RK73HBIJISIJ CHPR 150 J 1 16W R639 RK73HB1J103 10K 1 16W R536 CHPR 00 eat RK73HB1J103J 10K J 1 16W 8537 RK73HB1J102J CHPR 10K J 1 16W 1642 RKTSEBZERG9K 039 R538 RK73HH1J391D 390 0 REA RK73HB1J470 47 J 1 16W R645 RK73EB2ER39K 039 R539 06 CHPR 10 1 16W Rott 1 03 CHPR 1 16W R646 RK73HB1J333J CHPR 33K 1 16W R542 545 RK73HB1JO00J CHPR 00 J1 16W R647 RK73EB2ER39K 039 R546 RKT3HBIJIOA CHPR 100K 1 16W R648 649 RK73HH1JI54D 150K 1 16W R547 RKT3HB1J000 CHPR 00 J 1 16W RESO RK73GB2A000 CHPR 00 J1 10W RGS1 854 RK73HH1J274D CHPR 270K D 1 16W 8548 RKI3HBIJIOAJ CHPR 10K 1 16W 8549 271 20 8655 RK73HBIJ103J CHPR 10K 1 16W R550 RKT3HBIJISA CHPR 150K J 1 16W R656 RK73HB1J563 CHIPR 56K J 1 16W R552 RKI3HBIJ274J CHPR 270K J 1 16W R657 RK73HB1J000 CHPR 00 J 1 16W R554 555 RKT3HB1J473 CHPR 47K 1 18 1658 RK73HB1J182 CHIPR 18K J 1 16W 1659 RK73HB1J474 470K 1 16W 8557 RKI3HBIJ152J CHPR 15K J 1 16W 8558 RKT3HB1J474J CHPR 470K J 1 16W R660 RK73HB1J473 4K J 1 16W 8558
86. 3HB1J221 CHPR 220 J 1 16 8740 RK7SHBIJA70 CHIPR 47 1 16 8918019 RK73HB1J102J CHPR 10K J 1 16W 8742 RKI3HB1JA72 CHIPR J 1 16W 920 921 RK73HB1JA73J CHPR 4K J 1 16W R743 RK73HB1J681J 680 J 1 16W R922 RK73HB1J102J 10K J 1 16W RK73HB1J221J CHIPR 220 J 1 16W 8823 RK73HB1J123J T2K J 1 16W R925 RK73HHIJ334D CHIPR D 8045 RK73HB1J102 CHIPR 10K J 1 16 8746 RK73HB1J104J 10K 1 16 926 RK73HH1J223D CHIPR 22K D 8747 RK73HB1J154J CHIPR 150K J 1 16W R927 RK73HB1J102J 10K 1 16 8748 RK7SHBIJI0Q CHIPR 100K 1 16 8928 RK73HB1J000J 00 J 1 16W 8748 RK73HB1J184J CHPR 18K J 1 16W R29 RK73HB1J102J CHIPR 10K J 1 16W RISO RK73GB2A000 CHPR J 1 10W si 70 0483 05 TACT SWITCH 875253 RK73HB1J000 CHIPR 00 1 16 8755 RK73HB1J472 CHIPR J 1 16W 0801 50119 DIODE 8757 RK73HB1J104J CHPR 100K 1 16 D505 04221 DIODE 8758 RK73HB1J103J CHPR 10K 1 16 0506 507 13325 VARIABLE CAPACITANCE DIODE 0510511 18V282 F VARIABLE CAPACITANCE DIODE 759 760 RK73HB1J104J CHIPR 100K 1 16 0514 517 150282 VARIABLE CAPACITANCE DIODE 8761 RKI3HBIJIOI CHPR 100 1 16 8762 RK73HB1J103J CHIPR 10 1 16 0518 5019 DIODE 8768 RK73HB1J824J CHIPR 820K J 1 16W 0519 1SV278F VARIABLE CAPACITANCE DIODE RK7SHBISI0Q CHIPR 100K 1 16 0600601 HSC277 DIODE 0604 HZUZALL ZENER DIODE 8765 RK73HB1JO00J CHIPR 00 J 1 16W 0805 HZUSCLL ZENER DIODE 7
87. 5 7 High Power HIPWR 1 1024 E 5 8 Low Power LOPWR 1 1024 5 5 m 9 Balance BAL Encode frequency 1 256 5 5 10 NXDN Deviation NDEV 1 1024 Analog 5 5 1 ADEV Deviation 1 1024 NX 300 ADJUSTMENT Aw An Nn Nv Order Adjustmentitem Main LCD display Sub LCD display Adjustment range 1 1 12 QT Deviation ar 1 1024 1 1 13 DOT Deviation 1 1024 1 1 14 LTR Deviation LTR 1 1024 1 1 15 DTMF Deviation DTMF 1 1024 Single Tone 1 1 16 Deviation 1 1024 1 1 17 MSK Deviation MSK 1 1024 1 18 CW ID Deviation CWID 1 1024 1 point ADJ 19 VOX 1 voxi VOX measurement value 1 256 1 point ADJ 20 VOX 10 VOX10 VOX measurement value T5258 5 5 5 21 Sensitivity 1 SENS1 RSS measurement value 1 256 5 8 22 Sensitivity 2 SENS2 RSS measurement value Tom 5 5 5 23 RSSI Reference RRSSI RSSI measurement value 5 5 1 5 24 Squelch Open SOL ASQDET measurement value Sa 5 5 5 25 Low RSSI LRSSI 855 measurement value 1 256 5 5 5 26 High RSSI HRSSI 855 measurement value 12258 5 5 27 Squelch Tight SOLT ASQDET measurement value Battety Warning 1 point ADJ 28 BATT BATT measurement value Level 1 256 1 The adjustment of NXDN Narrow is common with the
88. 500 0700 CF700 192 1713 Em IC410 IC704 16707 22 16703 1 408 1 409 108 INT SP ree sw voL Sw t igna EXT SP DSP 2 Fig 2 RF and IF circuit NX 300 CIRCUIT DESCRIPTION 3 3 Audio Amplifier Circuit Audio processing high pass filter low pass filter de em phasized and so on at FM mode and decoding at NXDN mode are processed by DSP The audio signal from 1 108 and 102 goes through the amplifier IC704 The signal then goes through a mute switch 1C707 amplifier 713 elec tronic volume control 703 and AF amplifier 408 While busy AMT becomes Low to turn 1 707 on and the signal is fed to the AF switch While INAMT is High the AF Switch C409 selects the internal speaker and the audio signal is fed to the internal audio power amplifier IC413 and output to the internal speaker While EXAMT is High the AF switch 12409 selects the external speaker and the audio signal is fed to the external audio power amplifier IC412 and output to the external speaker The power supply for 1C413 and 412 is turned on while INAMT or EXAMT is High The speaker is switched by the logic of the speaker switching terminal SSW on the universal connector When the SP MIC is not attached SSW becomes High IC108 de tects the logic of SSW and activates either INAMT or EXAMT 3 4 Squelch Circuit It amplifies the demodulated noise signal from IC108 after filteri
89. 502 and ASIC IC108 and the output frequency changes continuously according to the applied voltage For the modulation input terminal VCO the output frequency changes according to the applied voltage This is used to modulate the VCO output works only when T R is low 11 NX 300 12 CIRCUIT DESCRIPTION 5 3 PLL IC IC502 The PLL IC compares the differences in phases of the VCO oscillation frequency and the VCTCXO reference frequency returns the difference to the VCO 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 differ ence increases when the set frequency is changed To supplement this the ASIC is used before control by the PLL IC to bring the VCO oscillation frequency close to the desired frequency As a result the VCO CV voltage does not change and is always stable at approximately 2 5V The desired frequency is set for the PLL IC by the ASIC IC108 through the 3 line 001 SCK1 PCS serial bus Whether the PLL IC is locked or not is monitored by the ASIC through the PLD signal line If the VCO is not the desired frequency unlock the PLD logic is low 5 4 Local Switch D600 D601 The connection destination of the signal output from the buffer amp
90. 68 RK73HB1J000J CHIPR 00 1 16 8768 RK73HB1J103J CHPR 10K 1 16 0806 807 DIODE 8770 RK73HB1J680J 68 1 16 0808 50119 DIODE am RK73HB1J181J 180 J 1 16W 0700 5019 DIODE 702 708 191206 VARIABLE CAPACITANCE DIODE 8772 RK73HB1J000J CHPR 00 1 16 D705 HSCI1g DIODE 8773 RK73HB1J824J CHIPR 820K 1 16 877475 RK73HB1J104J CHIPR 10 1 16 D706 1SV286F VARIABLE CAPACITANCE DIODE 877 RK73HB1J103J CHIPR 10 J 1 16W D708 1 2 VARIABLE CAPACITANCE DIODE 8778 RK73HB1J104J CHPR 10K 1 16 0709 HUCI31 DIODE D710 1SV286F VARIABLE CAPACITANCE DIODE 8778 RK73HB1J683J CHIPR 1 16 0711 HUCI31 DIODE 8780 RK73HB1JO00J CHIPR 00 J 1 16 8781 RK73HB1J182 CHIPR 18K J 1 16W 0901 188154 400 DIODE 8783 RK73HB1J224 CHPR 22K J 1 16W 0902 HSCI1g DIODE RK73HB1J474J CHPR 470K J 1 16W ICA TC SWBIFUF Mos ic 8785 RK73HB1J104J CHPR 100K 1 16 10500 MOS4C 8788 0 CHIPR 00 J 1 16 ics 1 710180 5 MOS IC 8788 RK7SHBIJI0Q CHIPR 1 16 106502 Note 1 MOSAIC 8780 0 CHIPR 100K 1 16 10503 1 710180 5 MOS IC 8791 RK73HBIJ000 CHPR 00 J 1 16W 10504 TC SWBIFUF Mos ic 8782 RK73HBIJ104J CHPR 100K 1 16 10800 TAJSWOIFUF MOS IC 879485 RK73HB1J103J CHIPR 10K 1 16 10700 MCPGOZ1 E OT 87868 RK73HB1JO00J CHIPR 00 1 16 10701 TKIOS3IVTL G ANALOGUE IC 8787 RK73HB1J473J CHIPR 47K J 1 16W 1702703 1 710180 5 MOSA
91. 7 02 VO Data bus 2 8 D3 VO Data bus 3 9 04 VO Data bus 4 10 05 VO Data bus 5 11 06 VO Data bus 6 12 D7 VO Data bus 7 13 VDD 333V LCD power supply output 14 vss GND 15 VDD 3 3V LCD power supply output 16 v1 LCD drive power supply 17 v2 LCD drive power supply 18 v3 LCD drive power supply 19 va LCD drive power supply 20 v5 LCD drive power supply CN23 1 Internal MIC GND 2 EMC Internal MIC input 3 SP BTL output for internal speaker 4 SP BTL output for internal speaker 5 SP BTL output for internal speaker 6 SP BTL output for internal speaker 7 1 Key matrix input KEYI1 for 6 8 6 2 Key matrix output KEYO2 for 6 key 9 BLSB LCD backlight voltage output 10 6 0 Key matrix output KEYOO for 6 key 11 6 KEYO1 Key matrix output KEYO1 for 6 key 12 BL_SB LCD backlight voltage output 13 6 0 1 Key matrix input for 6 key 14 AGND GND CN403 1 33A 3 3V for volume level 2 VOLGND GND for volume level 3 VOL Volume level input for audio control 4 Encoder pulse input 5 AGND GND 6 Encoder pulse input 7 Encoder pulse input 8 EN2 Encoder pulse input Pin Name 1 0 Function 9 Power output after passing through the fuse 10 581 Power input aft
92. 703 The signal is amplified by an RF ampli fier Q705 and passed through the bandpass filter L713 714 715 The resulting signal is applied to the first mixer Q703 where it is mixed with the first local oscillator signal output from the frequency synthesizer to produce the first IF 58 05MHz 3 2 IF Circuit The first IF signal is passed through a four pole monolithic crystal filter XF700 to reject adjacent channel signals The filtered first IF signal is amplified by the first IF amplifier 0701 and then applied to the IF system IC 701 The IF system IC provides a second mixer AGC amplifier and RSSI Received Signal Strength Indicator The second mixer mixes the first IF signal with the 57 6MHz of second local oscillator output and produces the second IF signal of 450kHz The second IF signal is passed through the ceramic filter CF700 to reject the adjacent channel signal The filtered second IF signal is amplified by the AGC amplifier The signal from the AGC amplifier is input to the ASIC IC108 through the ceramic filter CF701 and operational amplifier IC700 and 1 410 ANT D606 D607 15 MCF IFAMP 1612 1614 0708 0711 17214722 0705 1713 1716 0703 XF700 0701 cF701 1700 1701 Ler Q1 BPF mx aec jH BPF 1st PLL OSC PLL 2nd 03C x
93. 70K 1 16 8188 RK73HB1JA73J J 1 16W R482 RK73HB1J103J CHPR 10K 1 16 R189 RK73HB1J104J CHIPR 100K J 1 16W Raga RK73HB1JA73J 4X J 1 16W 8180 RK73HB1J102 CHPR 10K J 1 16W RK73HB1J223J 22K J 1 16W RK7SHBIJA7Q CHIPR 470K J 1 16W RK73HB1J103J CHPR 10 1 16 RK73HB1J102J CHIPR 10K 1 16 RKTSHBISIO CHPR 10 J 1 16W 193 198 RK73HB1J104J CHIPR 1 16 487 490 RK73HH1J223D CHIPR 22K D 1 16W D RK73HB1J152 15K R491 RKI3HBIJ1OA CHPR 100K J 1 16W 8402 RKI3HBIJISI CHPR 150 J 1 16W R492 RK73HB1JA74J CHPR 470K J 1 16W 8403 RK73HB1J152 CHIPR 15K Raga RK73HBIJO00 CHPR 00 J 1 16W RID RK73HB1J151J 180 J 1 16W 494 497 RKUSHHIJIDAD 10K 1 16 405 RK73HB1J152 15K Raga RK73HB1J333J CHPR 33K 1 16 406 RK73HB1J000J CHIPR 00 J 1 16 499 RK73HB1J223J 22K J 1 16 407 408 RK73HB1J103J CHIPR 10K 1 16 500 RK73HB1JA73J 4K J 1 16W Raog RKI3HB1J470J CHPR 47 1 16 R501 1 2221 CHPR 22K J 1 16W RA10 416 RKI3HBIJATIJ 470 J 1 16W 502 503 RK73HB1J103J CHPR 10K J 1 16 RK73HB1JO00J CHIPR 0 1 16 504 RK73HB1J102J 10K 1 16 R418 RKI3HBIJATIJ 470 J 1 16W 506 RK73HB1J222 CHIPR 220 J 1 16 8419420 00 CHIPR 00 J 1 16W 507 511 RK73HB1J102J 10K J
94. 8 B 4 zi 5 3 3 x e eg x o e e ce e 4 2 4 X53 426 8 10 AR AS NX 300 SCHEMATIC DIAGRAM CONTROL UNIT X53 4260 XX 5 esee w HE d ves EH Pao WP 38 yi 1 10405 1 RETEST TET arg 3 Quot d E M AM EC LUIS T 1 s Em ge 3 B H E 285 le pn i E vss 2 218 017 eee is E p EE amp e ans i 5A 2 15 glo LT i E 1 2 gt E i i 2 F701 i Al ore om E a E e i OPT ome 15 g 54 oT GI X53 426 9 10 CONTROL UNIT 53 4260 AV AX SCHEMATIC DIAGRAM INX 300 Note The components marked with a dot 6 are parts of layer 1 1
95. ALSH SRAM are broken Remove R406 If the ASIC side is OV the ASIC FALSH SRAM may be broken If the CS4 is OV 3 3V the ASIC FALSH SRAM may be broken If 5A is OV parts other than the BGA are broken 1 RST RESET ASIC reset signal LOW Reset 2 BINT Battery final voltage monitoring Final voltage 3 PSW Power switch signal LOW 4 ON 4 FRST FLASH reset signal LOW Reset 5 SBC Switch B control HIGH gt ON 6 DRST DSP reset signal LOW Reset 7MLCDRST LCD reset signal LOW Reset 8 54 LCD controller chip select signal LOW Active 9 Analog peripheral control 5 0V power supply An error occurs when the ASIC internal RAM reads or writes The ASIC may be broken An error occurs when the DSP internal RAM reads or writes The DSP may be broken An error occurs when the SRAM internal RAM reads or writes SRAM may be broken 31 NX 300 ADJUSTMENT Controls Selector A Power switch Volume orange key PTT switch r H Universal Side1 ke Side2 L 9 Panel Test Mode mode operation features This transceiver has a test mode To enter test mode press and hold the gt key while turning the transceiver power ON Before the transceiver enters test mode the frequency
96. ANI board 3 26P_RD VGS 1 50 Serial data input ANI board 4 26P TD VGS 1 SI Serial data output 5 NC ANI board PTT signal output 6 VGS 1 Enable board 7 10 VGS 1 USEL UART speed select output ANI board Emergency signal output 8 gency gency sig VGS 1 RST Reset output board GND 9 AGND VGS 1 AGND AGND ANI board A GND 10 AGND VGS 1 AGND AGND ANI board n Al VGS 1 AO VGS Audio input ANI board 12 AO VGS 1 Al VGS Audio output ANI board A GND 13 AGND VGS 1 AGND AGND E ANI board Note POW and can not be used simultaneously VGS 1 5 5V power supply ANI board Sidetone Sidetone input 15 OPT9 VGS 1 58 NX 300 TERMINAL FUNCTION PinNo Name Device 1 0 Conection Function board Data Out Data signal input 16 DTI VGS 1 board Tone Contro Speaker mute signal input 17 VGS 1 ANI board Man Down Man Down output 18 11 VGS 1 board MIC Mute MIC mute signal input 19 VGS 1 ANI board AuxOutput Emergency signal input 20 OPT2 E ae VGS 1 ANI board 21 VGS 1 ANI board 22 RXEO VGS 1 board 23 RXEI VGS 1 board 24 TXI VGS 1 A
97. Address em Parts No Description Destination Ref No Address jag Parts No Description Destination 0872 __ WF CBS _ BOF C573 CHPC 688 673808180408 4 PF B C670 CK7GHBIHATIK CHPC C574 73 08 CHPC 20 C575 576 73 08 CHPC 70PF C577 CKI3HBIHATIK CHPC 0572 CHPC 470PF C578 CK73GB0J475K CHPC 4JUF K 689 691 CKT3HBIATMK CHPC O10UF K 0578 CHPC C700 CHPC 70 B C701 CKI3HBICIO3K O OTOUF K C580 CK7HHBIHATIK CHPC 470PF C581 CC73HCHIHORSB CHPC OSPF C703 CKTSHBIAIOAK CHPC 0 10UF K 0582 CK73HBIHATIK _ CHPC 470PF C704 J 0883 CC73HCHIHORSB CHPC OSPF C706 CHPC i10 584 585 CKTSHBIHATIK CHPC 470PF K 0707 CHPC J C708 CC73HCHIH101J CHPC 100PF J C586 73 08 CHPC 709 B C587 CKI3HBIHATIK CHPC 709 711 CK7SHBIAIO4K CHPC O10UF K C588 CHPC 072 CHPC J C600 CK73HBIAIO4K K cna CKI3FBIAIOSKK CHPC 10UF K CC73HCHIHIOIJ CHPC
98. BIHIDK CHPC 100PF K 1709710 140 187592 SMALL FIXED INDUCTOR 18NH 1608 C953 CK73HBIATOAK CHIPC O10UF un 140 227592 SMALL FIXED INDUCTOR Z2NH 1608 C954 CK73GB1C224K CHPC 0220 K 11315 14148284 SMALL FIXED INDUCTORIB 2NH 201 955 956 CK73HBIHIOZK CHPC 1000PF K uns 182 0138 05 CHIP FERRITE 957 958 CK73GBIEIOSK CHPC 10UF K 1717 12285414 SMALL FIXED INDUCTOR Z20NH 201 CKI3HBIHATIK CHIPC 470PF 1720 140107592 SMALL FIXED INDUCTOR 10NH 1608 C962 7 1 CHPC 180PF J 1721 722 141 8268 14 SMALL FIXED INDUCTORIB 2NH 201 C963 CK73GBIEIOSK CHPC 10UF K 1723 1344551405 AIR CORE COIL 964 965 CKI3GBIC22AK CHPC K 175 140825592 SMALL FIXED INDUCTORIB 2NH 160 C966 CC73HCHIH220J CHPC 2F J 1728 141 3378 03 SMALL FIXED INDUCTOR 33N 2P 16 C967 CKJBHBIMETIK CHPC 470PF 1780 140 108557 SMALL FIXED INDUCTOR 100N 5 1 C968 CK73GBIC224K CHPC 0220 K 1900 182 0148 05 CHIP FERRITE CHPC 100 1901 133 1462 05 SMALL FIXED INDUCTOR 24 NX 300 PARTS LIST TX RX UNIT X57 7370 10 Ref No Address pem Parts No Description Destination Ref No Address jag Parts No Description Destination X500 177301605 TCXO 182 4 12 R606 RK73HB1J331J CHPR 330 1 16W XF700 64045 58 05 2 16 R607 RK73HB1J222 CHIPR 22K J 1 16W R608 RK73HB1JA70OJ 47 1 186 W 430 RK73GB2A0
99. Bp 58416 Villepinte 95944 Roissy Ch De Gaulle Cedex Kwai Fong N T Hong Kong Kenwood Electronics UK Limited Kenwood Electronics Singapore Pte Ltd KENWOOD House Dwight Road Watford Herts 1 Ang Mo Kio Street 63 Singapore 569110 WD18 9EB United Kingdom G H 1 J K L M N e a 5 NX 300 PC BOARD Pc BOARD NX 300 CONTROL UNIT 53 4260 10 11 CONTROL UNIT 53 4260 10 11 Component side view J79 0131 19 v Component side view J79 0131 19 m ane 5 m EM 7 21011 a2 22 og eg LZ jE mm mm 2 479 0131 19 Component side Ref No Address Ref No Address Ref No Address Layer 1 6K 7M Layer2 10415 8K 05 58 015 7L Layer3 7K D 7B 06 7L Layer4 02 7L D7 10 D17 9L Layers 6L D8 100 018 Layer 6 04 09 70 09 Foil side 05 4L
100. CKI3HBIC10K 0000 K 40 6782 05 CABLE CONNECTOR CN902 E23 1326 05 TERMINAL cmo CKJ3GBIHIMK CHPC 0100 K 272 CC73HCHIHORSB CHIPC OSPF 27 3 022405 FUSE C783 CKT3GBIEIOSK CHPC 10UF K C784 786 CHPC 17240170 CERAMIC FILTER C788 CHIPC O10UF K CE 02400045 CERAMIC FILTER CHPC 1500 141 479539 SMALL FIXED INDUCTOR 4 7U 2520 C790 CK73HBIAIOAK CHPC O10UF 1503 192 0163 05 BEADS CORE 0791 CKI3HBIHAIK CHPC 470PF 1504 140127692 SMALL FIXED INDUCTOR 12NH 1608 O10UF K 1508 509 140 228592 SMALL FIXED INDUCTOR 220NH 160 079485 CK73HBIHA7IK CHIPC 470PF 1513 140187892 SMALL FIXED INDUCTOR 18NH 1608 C796 CHIPC 1514518 140 2285 82 SMALL FIXED INDUCTOR 220NH 160 C798 CC73HCHIHIRSE CHIPC 15 B 1520 14018797 SMALL FIXED INDUCTOR T8NH B C799 CKI3HBIHAIK CHIPC 470PF 571 140 227867 SMALL FIXED INDUCTOR 22NH 8 CHIPC 20 1802 140 2285 82 SMALL FIXED INDUCTOR 220NH 160 CKI3HBIHATIK CHPC 470PF 1523 192 0446 05 BEADS CORE 802 803 CC73HCHIHOMB 40PF B 1524 526 140 228592 SMALL FIXED INDUCTOR 220NH 160 CC BHOHIHOB CHIPC _ B 1527 192 0446 05 BEADS CORE CC73HCHIHO50B SOF B 1528 140 277571 SMALL FIXED INDUCTOR ZZNH 1005 736 1 180 CHPC
101. CXO X500 VCTCXO X500 generates a reference frequency of 19 2MHz for the PLL frequency synthesizer This reference frequency is applied to pin 9 of the PLL IC IC502 and con nected to the IF circuit as a 2nd local signal through the Tripler The VCTCXO oscillation frequency is determined by the DC voltage of the VC terminal The VC voltage is fixed to 1 65V by R500 and R501 and supplied to the VC terminal through 501 The modulation signal is also fed to the VC terminal through IC501 The frequency adjustment is achieved by switching the ratio of the dividing frequency that is not adjusted by the DC voltage impressed to the VC The resolution of the adjusting frequency is approximately 4 2 5 2 VCO There is a RX VCO and a TX VCO The TX VCO 0509 generates a transmit carrier and the RX VCO Q508 generates a 1st local signal For the VCO os cillation frequency the transmit carrier is 450 to 520 MHz and the 1st local signal is 391 95 to 461 95MHz The VCO oscillation frequency is determined by one sys tem of operation switching terminal T R and two systems of voltage control terminals C V and V assist The operation switching terminal T R is controlled by the control line T_R output from the ASIC IC108 When the T_R logic is low the VCO outputs the transmit carrier and when it is high it outputs a 1st local receive signal The voltage control terminals CV and V assist are con trolled by the PLL IC IC
102. D VC Loop BUFF BUFF TR Pre Drive Ere Final ANT 199 Filter Neo T sw e gt sw LPF 16501 500182 LMC7101BIM5 PLL 05 3 0512 X 7 2SK879 Y F 2505636 0508 509 25 508 52 M FE 8 ex 0506 507 1SV325F Y 8 55 5 5 5 8 1504 D519 15 278 BUFF a604 TC78WSIFUF 1 2 D506 507 508 509 1 DC SW DC SW g PLD D514 515 516 517 TS 18282 1505 DSW is 2505636 1506 APG 88 9503 LPF 0901 85 mig 2805888 111 B SSM6LOSFU 10503 He ses 8 LMC7101BIM5 06 pro bE SSK 1824 A 8 amp assist E lascsaes 7111 ASQ xx 2 0704 PC SW Protect k lt p APC 0904 SSMSHO1TU SE LPF 4 E Fiter SSMSKISTE 10504 1901 XC9101009AKR 8 APCSW TC75WSTFUF 2 2 DCDC Q700 28C5108 Y F 10703 Converter 190 5 1 5 MC7101BIM5 os i Eus gt LMC7101BIMS TK11250CUCB 00 450kHz 8 sg Y oy Y SOR BPF Li 88 TUNE 28 TUNE ES TUNE ISAVE 10700 CF701 aot XF700 ans 82 924 58 2 MCP6021 E10T 450 2 25 4215 58 05MHz 5 3SK318 Y Y 09031 717335 FAF IF 1st RF 1 1 gt IDET H H BPF 4 1701 44 cr 4 uc 4 Notch TK10931VTL G Q902 SSM6LOSFU 1713714715 0721722 1726 DC SW gt 508
103. E 2 2 7 ale 5 cm mraz eres mw www rai mp 5 578 T HE mot n 75 2 oer 18 t 2 aere Sek SIDE TONE 120k 4 jP TD 17 X53 4260 XX A848 1 an zs EID is SDE TONE MUTE EEF D EN orm 1 TRE NONE rim m cue ae 23 cosa fE micosar 5 m 7 8 i I lt amp eee a 5 D 4 12094 47 m 3s le 35 E ral S tik z Fale om wl H E fies pee snm 8 o Dos co E cour mm ant TESMER pone i 6 s per co em E afn ves 1 que 828 283 mocro 54 1 Ta aa 5 NEP 38 BLE H _ gs Brie ES poH aegon A SITSERS H Bac g 3538 411 88 1 331 3 goy 1 3 ann 3 lt Bg gt VM ki E if Locos m sean bs ve Sle 179 ws B rm e x EM ice em EEJ
104. F701 F53 0360 05 FUSE 0 25A R121 123 RKT3HBIJIOA CHPR 1000 J 1 16W 0 95346 08 HOLDER LITHIUM CELL R126 01 100 1 16W R127 128 RK73HB1J000J 00 J 1 16W u2 192 0408 05 CHIP FERRITE 812831 RIJSHBIJIDI 100 J 1 16W 13 192014045 CHIP FERRITE 132 133 RK73HB1J104 10K J 1 16W 19240845 CHIP FERRITE 135 137 RIJSHBIJIDA 100K J 1 16W 18 192 0140 05 CHIP FERRITE 1101 102 192 0408 05 CHIP FERRITE R138 RK73HB1J473 CHPR 47K J 1 16W R139 RK73HB1J10Q 100K J 1 16 1401 133 1496 05 SMALL FIXED INDUCTOR R140 RK73HB1J000 CHPR 00 J 1 16W 1402 192 0467 05 CHIP FERRITE 814 143 RK73HB1J104 CHPR 10K 1 16 1403 192 0466 05 CHIP FERRITE RK73HBIJ471J 470 J 1 18 1409410 192 0467 05 CHIP FERRITE uot 18201405 CHIP FERRITE 145 147 RK73HB1J10Q 100K J 1 16 RB 11511 150 J 1 16W 1702 192 0162 05 BEADS CORE Rug RK73HB1J000 CHPR 00 J 1 16W 1704 709 192 0162 05 BEADS CORE 8150 RK73HB1J102 CHPR 10K 21160 110 712 192 0444 05 CHIP FERRITE P153 154 RK73HB1J104 100K J 1 16W 1713 19201635 BEADS CORE 1714717 10204455 CHIP FERRITE 8155 RK73HB1J473 CHPR 4K J 1 16W 115657 RK73HB1J472J J 1 16W 177 1802 05 CRYSTAL RESONATOR 32768HZ 158 159 RK73HB1J220 CHPR 22 1 16W X102 U7301505 TCXO 18 432MHZ 160 161 RK73HB1J000 CHPR 00 1 16W R162 RKT3HB1JA7A 470K J
105. IC 878 RK7SHBIJA70 CHIPR 47 1 16 Tc7SSsiFEF MOS IC 26 Note 1 This part cannot be replaced Therefore this part is not supplied a service part NX 300 PARTS LIST TX RX UNIT X57 7370 10 New New Ref No Address parts Parts No Description Destination Ref No Address pars Parts No Description Destination 10901 XCS101DO9AKR ANALOGUE IC 10902 TK11250CUCB MOS IC 10803 117338 BLPOLAR IC 0503 2805383 1111 TRANSISTOR 0504 25 879 0505 2505836 TRANSISTOR 0507 2805383 7111 TRANSISTOR 0508 509 2SKSOBNVIKS2 FET 0510 SSMBLOSFU F FET 0511 28J347F FET 0512 2505836 TRANSISTOR 0600601 2505836 TRANSISTOR 0602 2SK3077F FET 0603 RDOIMUSI T113 FET 0604 2805383 1111 TRANSISTOR 0605 SSM3KISTHF RT 0606 RDO7MVS1BT122 FET 0607 DTC144EE DIGITAL TRANSISTOR 0608 2SK1824 A FET 0610 05 TRANSISTOR 0700 28C5108 Y F TRANSISTOR 0701 2804215 TRANSISTOR 0703 35 31 FET 0704 2805383 1111 TRANSISTOR 0708 35 31 FET 0706 2SK1830F FET 0900 UMGSN TRANSISTOR 1901 303 SSMBLOSFU F FET 0904 SSMSHOITU F FET 0905 2SA1955A F TRANSISTOR TH600 ERTUOEVI04H THERMISTOR 27 EXPLODED VIEW Option board unit X87 B 2 2 14 0844 04 3 30 3008 60 83 2005 48 Parts with the exploded numbers larger than 700 ar
106. IJIDI 100 J 1 16W C796 CK73HBIATMK CHPC O10UF R31 RKI3HBIJIO2 CHPR 10K J 1 16W CHPC 10UF K R32 35 RKTSHBIJIOI 100 J 1 16W C798 CST7APIAT00M CHIPTNTL 10UF 10W RAD RK73HB1J000 CHPR 00 1 16W CKI3HBIAIOAK CHPC 010UF K R101 102 RK73HB1J474 470K J 1 16W C800 CK73HBIHISK CHPC 150 8103 RK73HB1J102 10K J 1 16W C801 CK73HBIC223K 0022UF mos RKT3HBIJIOA CHPR 100K 1 16W CKI3HBIEIO3K CHPC 0010 K 8108 RK73HB1J472 CHIPR 4K K3 C803 CK73HBWHIO2K CHPC 1000PF RIOT RKZSHBIJIDA CHPR 10K J 1 16W CBO CCT3HCHIHA7OJ CHPC APF J R108 RK73HB1J474 CHPR 470K K3 RIJSHBIJIDA 100K 1 16W E40 6755 05 FLAT CABLE CONNECTOR 0122 E23 1325 05 TERMINAL R112 RK73HB1J000 00 sinew CN23 E40 6758 05 PIN ASSY R113 RK73HBIJIO4J 100K J 1 16W 3132505 TERMINAL R114 RKI3HBTJ331 CHPR 30 Janew K3 CN403 0681305 PIN ASSY R115 RK73HB1J10Q 100K J 1 16W RIG RK73HB1JA73J J 1 16W gt E40 6421 15 PIN ASSY CN405 E40 6754 05 FLAT CABLE CONNECTOR R117 RK73HB1J000 CHPR sinew K3 E40 6586 05 SOCKET FOR PIN ASSY R118 RK73HB1J473 CHPR 47K J 1 16W CN710 E40 6757 05 PIN ASSY R118 RK73HB1J10Q 100K J 1 16W R120 RK73HB1J474 470K J 1 16W
107. IPC test mode LOPWRI gt Center Press Apply All IC LOPWRI gt High button to store the IH LOPWRI High adjustment value LOPWRI PTT Press Transmit after all Adjust button adjustment point PTT ON Press Apply button to was adjusted Press lt key to store store the adjustment value the adjustment value 3 Balance 1 Adj tem BAL 1 Adj item Balance Deviation The sub LCD display ZkHz Tone adjust 2 Adjust Deviation meter meter shows the single tone deviation is within Deviation meter LPF 3kHz Oscilloscope frequency that DSP 1 0 of 20Hz LPF 3kHz HPF OFF generates The tone tone deviation HPF OFF 2 Adj item Low frequency is alternately 2 Adj switched to 20Hz and PC test mode IL Center 2kHz by pressing Press Apply All IH BALI SIH BAL High Side1 key on the button to store the Adjusti High front panel or checking adjustment value PTT ON PTT Press Transmit 2000Hz Sine Wave after all Press lt key to store button check box on the PC adjustment point the adjustment value Press Apply button to window while was adjusted store the adjustment value transmitting Change the adjustment value to get same deviation at 20Hz and 2kHz within the limit of the specified voltage 2 Refer to the Mode Signaling Necessary adjustment and order table on page 46 42 ADJUSTMENT NX
108. IR W Installing lithium cell W09 0971 05 1 Insert a lithium cell into one side of the socket CN401 2 Push the lithium cell with your fingers as shown in the figure to insert the lithium cell into the socket Control unit Affixing the keyboard ASSY S79 0472 05 Affix the keyboard ASSY to the Control unit as shown in the figure After affixing the keyboard ASSY to the Control unit confirm that the three positioning holes of the keyboard ASSY and the Control unit are not misaligned E Inserting the Volume and Channel switch into the chassis Insert the volume and channel switch into the chassis with the VOL CH FPC formed as shown in the figure H 74 VOL CH FPC E Forming the VOL CH FPC Cord ASSY and Universal connector FPC Form the VOL CH FPC Cord ASSY and Universal connector FPC as shown in the figure VOL CH FPC y Iniversal FPC Cord ASSY Changing the channel selector from 16 channel operation to free Remove the channel selector knob Remove the circular nut Remove the mechanical stopper Reassemble the circular nut and channel selector knob that were removed in steps 1 and 2 in their original positions PONS Channel selector knob Circular nut K29 9408 13 Mechanical stopper N14 0844 04 D32 0446 14 NX 300 CIRCUIT DESCRIPTION 1 Overview The NX 300 is a UHF portable
109. MATIC DIAGRAM INX 300 UNIT X57 7370 10 2 Note The components marked with a dot are parts of layer 1 1 ANTENNA SWATCH el HEIN 2 3 09 VARECAP TURE ES 4 5 6 BCAMP ter BPF II sa em Nu Lucis TEMS Im S a E 7 85 X87 737 A 2 4 4 NX 300 INTERCONNECTION DIAGRAM 6KEY SP MIC SWITCH UNIT POWER SW CHANNEL i 1 372 SELECTOR VOL e CONTROL PCB 53 426 LCD ASSY UNIVERSAL CONNECTOR 9 10 m X57 737 B 2 o OPTION PCB 86 NX 300 INTERCONNECTION DIAGRAM PCB 57 737 A 2 87 NX 300 BLOCK DIAGRAM X53 4260 XX Control unit 88 10401 TOTNZ24SFKF to LCD Module CN404 50 Board to Board 7 for production
110. NI board 25 6 VGS 1 board At Switched B output 26 POW VGS 1 Note POW and 5V can not be used simultaneously 59 NX 300 TERMINAL FUNCTION CN737 Option board connector specification Rating and Condition Pin Name Signal Type Parameter Min Typ Max Unit Input 1 OPTI VIH 28 33 6 VIL 0 05 8 WO Digital Output 17 28 35 18 11 VOL 0 05 Input 2 28 33 19 7 WO Digital VIL 0 0 5 v 20 2 Output 25 6 28 35 VOL 0 05 v Input VIH 28 33 v 3 26P_RD Digital VIL 0 05 v Baud rate 19200 bps Output VOH 28 35 v 4 26PTD O Digital VOL 0 05 v Baud rate 19200 bps Input Amplitude Square wave 33 Vp p Coupling Capacitor 0 01 uF 15 OPT9 1 Analog Input Impedance 22k Q Allowable Frequency 300 3000 Hz Output Amplitude 1 2 60 deviation 0 9 13 17 Vp p Coupling Capacitor uF 7 O Analog Digital Output Impedance 22k Q Allowable Frequency 300 3000 Hz 11 NC 12 NC Input Amplitude 1kHz 60 deviation 0 8 14 14 Vp p Coupling Capacitor uF 16 Analog RA Input Impedance 22k Allowable Frequency 300 3000 Hz Output Amplitude 1 2 60 deviation while external MIC 160 260 360 while internal 130 mVp p 21 Analog Coupling C
111. NT Condition Measurement Adjustment kem Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 7 55 at 1 Adj item An HRSSII 1 Adj RSSI SSG Panel ANT Panel tuning mode 80dBm Analog Narrow VIVM Universal After input signal adjust 6 2 Adj item 2 Adj Oscilloscope connector from SSG press lt AnL HRSSII Low key to store the Analog lAnL HRSSII gt Center adjustment value Narrow AnC HRSSI gt IHigh AnH HRSSII gt High IPC test mode AnH HRSSI SSG output 80dBm After input signal Adjusti 22 4 from SSG press SSG output B0dBm MOD 1kHz 1 5kHz Apply button to 22 4uV store the MOD 1kHz 1 5kHz adjustment value TAnalog 1 Adj item Aw 55 TY Adj item High RSST Wide Adjust Analog Wide 2 Adj item 2 Adj item Low HRSSII gt Low HRSSII Center AWC HRSSII IHigh lAwH 551 High AwH HRSSI SSG output 80dBm Adjust 22 4 SSG output 80dBm 1 2 2 22 44 MOD 1kHz 3kHz INXDN Very 1 Adj item INv HRSSIT 1 Adj item THigh RSSI Narrow Adjust Very Narrow 2 Adj item 2 Adj item Low INvL HRSSII INvL HRSSI gt Center INvC HRSSII High INvH HRSSII High HRSSI SSG output B0dBm Adjust 22 4uV SSG output 80dBm
112. SBC signal becomes High 1C903 33C operates The FET switches are controlled by the CPU Q905 507 is turned on in transmit mode Q902 50R and 0903 50IF are turned in receive mode When the VOL SW is turned off the PSW signal becomes Low After detecting the PSW signal the ASIC changes SBC signal to Low Then the power supplies except 1 416 3180 stop 13 CIRCUIT DESCRIPTION unit X57 14 Ne 4B RF Final AMP 25A APC 1 902 50C 1 1 10905 sor 1 or sw circuit E 1 1 0902 SRC honsw PX circuit i t 1 t 1 IF cirouit 1 3 1 33C sec PLLNCTCXO 1 0901 SB3 i 583 sw E __ 150 i gt Assist Tune D CN900 Tt Maer tet Eta cl 16 9 Control unit X53 1 CN404 1 500 8C Universal 1 Y 0403 582 BackLight 58258 Light 1 7 x Option 12403 _ 10V Depe CP Bias t 1 416 0409 318U 1 i AVR IC Sieu SRAM
113. SP control 411 Diode RTC BATT control D412 Diode DC switch control D413 Diode RTC BATT control D414 Diode TX LED switch D415 Diode RX LED switch D416 Diode 33M control D417 Diode 33A control D701 Diode 5A switch D702 Diode PLD control D703 704 Diode Detector D705 Diode Noise detector D706 Diode Detector D707 Diode VOX Ref No Part Name Description LCD contrast 1C101 IC FLASH ROM 02 IC DSP 1C103 SRAM 104 2 input AND gate 1C105 Reset 12106 RTC 12107 Buffer 1C108 ASIC 1C109 2 input AND gate 1 401 402 IC Bus switch IC403 IC Voltage doubling inverter 1 404 Voltage regulator 33M 1 405 Voltage regulator 15M 1 406 Voltage regulator 33A 1 407 DC DC converter 1 408 12409 switch 1 410 IF AMP 1 411 Voltage regulator 500 1c412413 IC Audio AMP 1 414 Reset 1C415 IC 2 input AND gate 12416 Voltage regulator 1 417 418 IC Dual bus buffer 1 701 control 1 702 APC LPF 12703 D A converter 1 704 RX AF LPF 1C705 Modulation LPF 1C706 IC MIC AMP 1 707 RX AF switch 1 708 Voltage regulator 1 709 IC Sidetone mute 710 MOD MIC summing AMP 1 711 SQL BPF SQL DC 712 switch 713 1 65V REF RX summing 714 switch 1 715 716 IC VOX
114. SQL adjustment value Narrow AnC SQL Center AnH SQL gt High IPC test mode AnH SQL High After input signal Adjust 556 output from SSG press SSG output 12dB SINAD level 198 Apply button to 1298 SINAD level 198 MOD 1kHz 1 5kHz store the MOD 1kHz 1 5kH2 adjustment value TAnalog 1 Adj tem Aw 500 17 Adj Wide Squelch Analog 2 Adj item Widell SQL 2 Adj SQL ILow 5 Center AwH 5 IHigh lAwH SQL IHighl Adjust 556 output SSG output 12dB SINAD level 198 1298 SINAD level 1dB MOD 1kHz 3kHz MOD 1kHz 3kH2 INXDN Very 1 Adj item INv SOLT 17 Adj item TOpen Narrow Squelch NXDN 2 Adj item Very Narrow INvL SQLI 2 Adj item Low INvL 00 ILow 5011 Center INvH IHigh SOL IHighl Adjust 556 output SSG output 12dB SINAD level for 12dB SINAD level for Analog Narrow AdB MOD 400Hz 1 1kHz Analog Narrow 488 400 20 1 1 2 4 The Squelch Open adjust of Narrow is common with the Squelch Open adjust Analog Narrow 49 NX 300 ADJUSTMENT Condition Measurement Adjustment kem Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 6 RSSI at 1 Adj item An LRSSI 1 Adj item Low RSSI SSG Panel
115. T3HCHIHIOT CHPC 100PF J 1409 TCIWEGRK F CKI3HBIHATIK CHPC Ico MCPGOZ1 E OT C503 CHPC C504 CKI3HBIC1O3K CHPC ODIOUF NUMZBROUIDSZB ANALOGUE IC 10412413 TPAS2DIATDRER ANALOGUE IC C505 COT3HCHIHIOI CHPC 100PF J 061005602 8 MOS IC C506 CC73HCHIHIOOC CHPC 10 C 1015 TCISETOBFU F MOS IC C508 CHPC 000 23 812 318 6 ANALOGUE IC C509 CC73HCHIHIO0C CHPC 10 C csi CK73FBOJIOSK CHPC TCIWTI2SFUF MOSAC C512 CHPC O010UF K Note 1 MOS IC C513 CC73HCHIHIOIJ CHPC J 17 TC SWBIFKF MOs ic C514 516 CHPC ODIOUF K 1703 M62364FP F C517 518 CC73HCHIHIOIJ CHPC J C520 CK7SGBlEISK CHPC 10UF K TCUSSSIHE MOSAIC 10705 Te7swsiFKiF MOS C CC73HCHIHIOIJ 100PF J 706 To7sssireF MOSIC C522 CHPC 16707 TCAWSFKE MOS IC C523524 CC73HCHIHIOIJ CHPC J XCB2048502PR 05 C525 CC73HCHIHA70J CHPC J C526 CUSHBIAIDK CHPC 0107 K 1c709 TCIWS3FKIF MOSIC 1710711 Te7swstFKiF MOSAC 052 528 CC73HCHIHIOIJ CHPC 100PF J 172 TC7S66FUF MOSAIC C533 CKI3HBIHATIK CHPC 470PF K I713 TCTSWSIFKID Mos ic C534 CC73HCHIHIOIJ CHPC J
116. TE MUTE 4 1 E 14 27 x 2 4 3 i 5 8 3 E QrososcamRGRF 4 zs 3 L Gros sso nr 8 5 5 1 5 M 5 Ruscanea _ FTC TOTSWSIFKFI22 TOISWSIPKEJZ TCISWSIFKEN22 8 1 8E 8 WO Expander F SUM DAC DAC veo moo Se 5 5 i em E or gt F 1 H 33 Bee 25 1358 3 si KEY Matric 710 26pin Option Board 12 88 NX 300 BLOCK DIAGRAM 57 7370 10 TX RX unit 90 BLOCK DIAGRAM NX 300 CN900 Q507 I2CCK 2805383 7111 7 En TX RX 450 520MHz Filter t 0510 SSMBLOSFU TIR JR 0511 28 3472 sw D606 607 325 D600 601 Q601 9602 0709 711 2505636 HSC277 2 2505698 25 077 RDO1MUS1 RDO7MVSIB 131 4 MO
117. UHF DIGITAL TRANSCEIVER NX 300 SERVICE MANUAL KENWOOD Kenwood Corporation 2007 10 PRINTED IN JAPAN 51 8811 00 5 243 NX 300 Helical Antenna KRA 23 option Knob Selector 52 29 9408 13 Knob Volume K29 9407 03 Badge B43 1606 04 Knob PTT K29 9405 03 Plastic cabinet assy 18 key A02 4003 13 Packing 18 key G53 1766 11 NX 300 K Knob Selector 29 9408 13 Knob Volume K29 9407 03 Badge B43 1606 04 Knob PTT K29 9405 03 Packing 6 key G53 1765 11 6 key 02 4002 13 Does not come with antenna Antenna is available as option GENERAL SYSTEM SET UP REALIGNMENT DISASSEMBLY FOR REPAIR CIRCUIT DESCRIPTION COMPONENTS DESCRIPTION PARTS LIST EXPLODED VIEW PACKING ADJUSTMENT TERMINAL FUNCTION PC BOARD CONTROL UNIT X53 4260 XX TX RX UNIT X57 7370 10 This product complies with the RoHS directive for the European market CONTENTS SCHEMATIC DIAGRAM CONTROL UNIT X53 4260 XX TX RX UNIT X57 7370 10 INTERCONNECTION DIAGRAM BLOCK DIAGRAM LEVEL DIAGRAM OPTIONAL ACCESSORIES KNB 47L Li ion BATTERY PACK 93 KNB 48L Li ion BATTERY PACK 93 SPECIFICATIONS BACK COVER 72 82 86 88 92 O m This product uses Lead Free solder NX 300 GENERAL SYSTEM SET UP Document Copyr
118. al Unit Parts Method Specifications equipment Remarks 9 DTMF 1 Adj item An DTMF 1 Adj item DTMF Deviation Panel ANT Panel Write the value as 1 25kHz 0 05kHz Deviation Adjust Deviation Analog meter tuning followings adjust 2 Deviation meter Narrow Oscilloscope model 540 Reference LPF 15kHz Deviation meter LAL value Narrow HPF OFF LPF 15kHz PTT ON HPF OFF Press lt key to store PTT Press Transmit IPC test the adjustment value button model Press Apply button 10 4 store the adjustment value Widel 1 Adj DTMF 1 Adj Z 50kHz 0 05kHz Adjust Deviation Analog PTT ON Wide Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value 1 Adj 1 Adj item Single Write the value 1 2 0 05 2 Deviation Adjust Tone Deviation followings adjust 2 Deviation meter Analog Narrow 513 Reference LPF 15kHz Deviation meter value Narrow HPF OFF LPF 15kHz PTT ON HPF OFF Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value TWidel 1 Adj tem Aw TONE 1 Adj item Single 00 2 0 05 2 Adjust Tone Deviation PTT ON Analog Wide Press lt key to store PTT Press Transmit the adjustment value but
119. and transfers data to or from an external device NX 300 CIRCUIT DESCRIPTION 6 2 Memory Circuit The memory circuit consists of the ASIC 108 and the SRAM IC108 and flash memory 101 The flash memory has capacity of 32M bit that contains the transceiver control program for the ASIC and stores the data It also stores the data for transceiver channels and operating parameter that are written by the FPU This program can be easily written from external devices The SRAM has capacity of 1M bit that contains work area and data area E Flash memory Note The flash memory stores the data that is written by the KPG 111D tuning data Deviation Squelch etc and firmware program User mode Test mode Tuning mode etc This data must be rewritten when replacing the flash memory SRAM Static memory Note The SRAM has temporary data area and work area When the power supply is off it is backed up by an internal secondary lithium battery Therefore the saved data is not lost Real time clock The clock function is based on real time clock IC IC106 When the power supply is off it is backed up by an internal secondary lithium battery 6 3 LCD The LCD is controlled using the bus lines on the connector 1 of the Control unit X53 426 It corrects the LCD con trast voltage using IC1 6 4 Key Detection Circuit Keys are detected using the key scan circuit in IC108 The KEYI signals that ar
120. apacitor VuF Output Impedance 2 2k Q Allowable Frequency 300 3000 Hz 60 NX 300 TERMINAL FUNCTION Rating and Condition Pin 1 0 Signal Type Parameter Min Typ Max Unit Output Amplitude 1kHz 60 deviation 450 640 830 mVp p Coupling Capacitor 0 uF 22 RXEO O Analog Output Impedance 2 2k Allowable Frequency 300 3000 Hz Input Amplitude 1 2 60 deviation 450 640 830 Coupling Capacitor 0 uF 23 RXEI Analog dns Input Impedance 22k Allowable Frequency 300 3000 Hz Input Amplitude 1kHz 60 deviation while external MIC 160 260 360 while internal 130 mVp p 24 TXI 1 Analog Coupling Capacitor 0 1 uF Input Impedance 22k Q Allowable Frequency 300 3000 Hz Output Voltage 5 v 14 5V Power Output Current 78 mA Output Voltage 75 26 0 Power Output Current 100 mA 9 DGND GND mA Allowable current value 10 100 15 AGND GND Total current of 3 pins mA 5 NC 61 NX 300 TERMINAL FUNCTION CN737 Option board connector specification Pin Name Device 1 0 Conection Function COR Conv LTR L Not activity receiving H Activity receiving TOR Conv LTR L Not activity receiving op ANIboard 0 Aux Input H Activity receiving Sub
121. ary adjustment and order Mode Signaling Wide Narrow Very Narrow Analog Audio T Balance adjust T Balance adjust 2 Analog Deviation adjust Widel 2 Analog Deviation adjust Narrow T Balance adjust T Balance adjust 2 Analog Deviation adjust Wide 2 Analog Deviation adjust Narrow 3 OT Deviation adjust Wide 3 Deviation adjust Narrow T Balance adjust T Balance adjust 2 Analog Deviation adjust Wide 2 Analog Deviation adjust Narrow 5 3 DOT Deviation adjust Wide 3 DOT Deviation adjust Narrow UTR T Balance adjust T Balance adjust 2 Analog Deviation adjust Wide 2 Analog Deviation adjust Narrow 3 LTR Deviation adjust Wide 3 LTR Deviation adjust Narrow DTMF T Balance adjust T Balance adjust 2 Analog Deviation adjust Wide 2 Analog Deviation adjust Narrow 2 Deviation adjust Wide 3 Deviation adjust Narrow ZTONE T Balance adjust T Balance adjust 2 Analog Deviation adjust Wide 2 Analog Deviation adjust Narrow TONE Deviation adjust Wide 3 TONE Deviation adjust Narrow MSK T Balance adjust T Balance adjust FleetSync 2 Analog Deviation adjust Wide 2 Analog Deviation adjust Narrow 3 MSK Deviation adjust Wide 3 MSK Deviation adjust Narrow NXDN T Balance adjust T Balance adjust E 2 Deviation adjust Narrow 2 Deviation adjust Very Narrow 48 3 CWID Deviation adjust Very Narrow
122. c D707 1C401 10413 3D 1 708 90 0401 80 0413 9 D401 4M D413 7 13 1 402 4F 1 414 9A 1 709 4 0402 8C 0414 6C D402 5M D414 6F 1 403 1 416 12710 6 0403 8 0415 6 D403 5M D415 7 66 N o J L M R 5 BOARD NX 300 CONTROL UNIT X53 4260 XX 10 11 Foil side view J79 0131 19 2 012 maa 2 1 p o TFIID Sie ili 4 2 22 248 He 124 Eu EE 0403 5 idi wal ma genl 1004 RED ma 6 Eres 5 m 5 8 Lar 7 ED 16152 iT 8 5 ple isl ca Le 9 144 C132 1716 1715 1101 J79 0131 19 10 Component sid
123. dio filtering processing Microphone amplifier AGC processing Audio mute processing Modulation level processing 7 Power Supply Circuit The battery voltage is provided from the battery terminal on the TX RX unit X57 The battery voltage passes through the 2 5A fuse F900 and goes to the RF final ampli fier AVR ICs C902 IC903 and Control unit 53 426 In the control unit B is connected to the DC DC 12407 AVR ICs IC411 708 416 and voltage detector IC414 The voltage detector watches the battery voltage If the battery voltage is 5 6V or higher the detector outputs High While the output of IC414 is High 416 and 0409 provide 3 1V 31BU to the backup section When the VOL SW is turned on SB1 becomes high bat tery voltage The DC DC 407 operates if both SB1 and the output of the detector are high 12407 outputs 3 8V and it activates 1 404 33M IC405 15M and IC406 33A As a result the ASIC and DSP operate The SBC signal becomes High after the ASIC operates 1C708 5A 0403 on the Control unit SB2 and 0901 on the TX RX unit 583 are turned on 1 901 and IC903 operate by turning on these AVR ICs and FET switches The 5UC signal becomes High when an option is installed on the universal connector Then IC411 50U operates When the SAVE signal becomes High 1 902 50 oper ates The output of IC902 is connected to three FET switches Q902 Q903 Q905 When the
124. e ress Ref No Address Layer 1 M Layer 2 0417 5 Layer3 n Layer 4 D72 s Layers 0703 40 Layer 6 D Foil side D 076 0706 60 070 60 E 13 67 1 B PC BOARD TX RX UNIT X57 7370 10 A 2 Component side view J79 0128 19 A 2 300 J L P o PC BOARD TX RX UNIT X57 7370 10 A 2 Component side view J79 0128 19 2 TX RX UNIT X57 7370 10 B 2 479 0128 19 Foil side D F NX 300 PC BOARD TX RX UNIT X57 7370 10 A 2 il side view J79 0128 19 A 2 4 TX RX UNIT X57 7370 10 B 2 79 0128 19 B 2 Component side tee e Layer 1 Layer2 Layer3 Layer 4 Layers Foil side 70 _ BOARD 300 TX RX UNIT 57 7370 10 A 2 Foil side view J79 0128 19 A 2
125. e normally pulled down go high when any key is pressed 6 5 Low Battery Warning The battery voltage is divided using R444 and R445 and is detected by the ASIC IC108 When the battery voltage falls below the voltage set by the Low battery warning adjust ment the red LED blinks to notify the operator that it is time to replace the battery If the battery voltage falls even more approx 5 8V a beep sounds and transmission stops Low battery warning The red LED blinks during transmission The red LED blinks and the warning tone beeps while the PTT switch is pressed Battery condition The battery voltage is low but the transceiver is still usable The battery voltage is low and the transceiver is not usable to make calls 6 6 DSP The DSP circuit consists of a DSP IC102 and processes the base band signal The DSP operates on an external clock of 18 432MHz the same as the 108 the I O section oper ates 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 audio codec and modula tion demodulation CAI processing such as error correction encoding OT DOT encoding decoding LTR encoding decoding DTMF encoding decoding MSK encoding decoding 2 tone encoding decoding Compressor expander processing Voice scrambler processing Transmit receive au
126. e not supplied If a part reference number is listed in a box on the exploded view of the PCB that part does not come with the PCB These parts must be ordered separately NX 300 PACKING 46 BELT CLIP J29 0730 05 A CAP B09 0712 03 40 PACKING CAP Qa G11 1769 04 53 DRESSED SCREW 08 0564 04 PAN HEAD MACHINE SCREW N30 3008 60 x2 11 INSTRUCTION MANUAL lt B62 2014 00 n2 Parts with the exploded numbers larger than 700 are not supplied 29 NX 300 ADJUSTMENT Fault diagnosis of the BGA IC 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 108 DSP 1 102 FLASH IC101 SRAM 103 Checking power supply voltage Checking voltage When abnormal Checking an abnormal point value is confirmed Points to be checked Normal voltage 33M has an abnormal voltage 33M 1 404 5 3 3V ASIC 15M IC405 5 pin 1 5V Remove L714 to check the voltage of the 33M 33A IC406 5 pin 3 3V If the voltage becomes normal the ASIC is broken 31BU IC416 3 pin 3 1V DSP Remove L712 to check the voltage of the 33M Power supply of each device is connected through the coil If the voltage becomes normal the DSP is broken ASIC FLASH 33M L714 15M L715 33A L716 Remove L717 to check the voltage
127. eiver compander can be turned on or off using the FPU COMPONENTS DESCRIPTION Control unit X53 4260 XX NX 300 Ref No Name Description 0403 Transistor 582 switch 0404 FET 582 switch control 0405 FET AF AMP switch 406 407 Transistor Voltage regulator AF AMP 408 409 Transistor DC switch 0410 FET DC switch 0411 FET Level converter 0412 FET DC switch 0413 415 Transistor DC switch 0701 Transistor OPT switch 0702 Tone switch 0703 WIN noise switch 0704 Transistor SQL noise AMP 705 706 Transistor MIC AGC 0707 012 LED 12key backlight 03 4 LED LCD backlight D5 6 LED 12key backlight D7 8 LED LCD backlight D9 10 LED 12key backlight Dii Diode LCD backlight switch D12 16 Diode Reverse current prevention D17 19 Zener diode Surge absorption D20 Zener diode PTT RF OPT control D21 Zener diode EMC MSW SSW control D22 Diode RXD control D23 Diode TXD control D101 Diode 12key backlight switch D102 Diode Reverse current prevention D401 404 Diode 12key control D405 406 Diode DC DC converter D407 Diode Reverse current prevention D408 Diode DC DC converter control 409 410 Diode
128. er power switch CN404 1 LED G O Green LED control output 2 EMG O Key matrix output Emergency Orange key 3 LED_R O Red LED control output 4 IFC SOIF switch control output 5 O Reg control output 6 I2CCK O TCXO thermometer clock output 7 Bre O Reg switch control output 8 I2CSDA thermometer data input 9 SBC O SB3 switch control output 10 O TX RX control output 11 T2 RX tuning voltage 2 control output 12 ASSIST O VCO tuning voltage control output 13 RX tuning voltage 1 control output 14 VAGC AGC voltage input 15 58 switch control output 16 MOD TCXO modulation output 17 PGND GND 18 RSSI RSSI voltage input 19 PGND GND 20 I CV voltage input 21 AGND GND 22 NC connection 23 NC connection 24 1 Power input after passing through the fuse 25 48 Power input after passing through the fuse 26 B 1 Power input after passing through the fuse 27 48 1 Power input after passing through the fuse 28 NC connection 29 NC connection 30 AGND GND 31 PTT 1 PTT input 32 Side G Key matrix output SIDE1 2 key 33 8461 1 Key matrix input SIDE1 key WIN O WIN control output 35 5001 PLL serial data output 36 Side_2 1 Key matrix input SIDE2 key 37 PCS_RF O PLL enable output DSW APC voltage discharge switch control output 39
129. ersonal computer and make sure that the transceiver is in the Program mode 6 Press write button in the window When the trans ceiver 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 Note This mode cannot be entered if the Firmware Program ming mode is set to Disable in the Programming software 6 4 Function 1 If you press the Side2 key while PROGRAM 115200 is displayed the display changes to PROGRAM 19200 The LED blinks green to indicate that the write speed is low speed 19200 bps If you press the Side2 key again while PROGRAM 19200 is displayed the display changes to PROGRAM 38400 The LED lights red and orange alternatively If you press the Side2 key again while PROGRAM 38400 is displayed the display changes to PROGRAM 57600 The LED blinks orange If you press the Side2 key again while PROGRAM 57600 is displayed the display returns to PROGRAM 115200 The LED lights orange 2 If you press the Side1 key while PROGRAM 115200 is displayed the checksum is calculated and a result is dis played If you press the Side1 key again while the checksum is displayed PROGRAM 115200 is redisplayed Note Normally write in the high speed mode 7 Clone Mode Programming data can be transferred from one transceiver
130. ethod Specificstionaf equipment Remarks 13 1 1 Adj item VOX1 1 Adj item IVOX1 AG Panel Universal Panel tuning mode adjust Adjust AG 1KHZ A5MV at connector After apply signal AG 1kHz 45mV at MIC terminal from AG press lt MIC terminal key to store the 4 0 10 T Adi item VOX1T0 17 Adi adjustment value adjust Adjust AG 1kHz 3mV at AG IKHZ 3MV at MIC terminal Mic tor Ail After apply signal from AG press Apply button to store the adjustment value 16 T Adj iem IBAT AdjitemBattery Power Panel ANT Press the PTT switch detection Adjust Warning Level meter BATT or Transmit button writing PTT ON Press Transmit DVM terminal on the PC window button Apply 6 20V to battery terminal Confirm that one pre determined numeric in the range 1 to 256 appears Panel tuning model Press lt key to store the adjustment value PC test mode Press Apply button to store the adjustment value T6BATI Panel test mode 7 Test Channel Check The transceiver detection 1 CH Sig 1 1 Channel 1 can transmit check BATT terminal voltage Signaling without causing 6 0V Mode Analog the LED to blink PTT ON Signaling 1 terminal voltage 6 0 PTT Press Transmit button Mode Signaling Necessary adjustment and order e Necess
131. firmed Points to be checked Normal voltage If the FRST repeats 3 3V and OV at intervals FRST C110 3 3V the ASIC FLASH and SRAM may be broken When a normal value is confirmed 30 Checking the output signal from the ASIC NX 300 ADJUSTMENT When a normal value is confirmed Y Points to be checked SBC R432 Normal voltage 33V When a normal value Vis confirmed Points to be checked DRST C109 Normal voltage 3 3 The LCD displays control When a normal value yis confirmed Points to be checked LCDRST R406 Normal voltage When a normal value 5 confirmed Points to be checked CS4 1 402 7 pin Normal voltage 3 3 gt 0 3 3 When a normal value Vis confirmed Points to be checked 708 5 pin Normal voltage When a normal value 5 confirmed It is unlikely that the BGA parts are broken When an error display appears on the LCD The LCD displays INIT ERROR1 The LCD displays INIT ERROR2 The LCD displays INIT ERRORS Descriptions of signal names When an abnormal value is confirmed When an abnormal value is confirmed When an abnormal value is confirmed When an abnormal value is confirmed When an abnormal value is confirmed Remove R432 If the ASIC side is OV the ASIC FALSH SRAM may be broken If the DRST is OV the ASIC F
132. he ia ue 8 EE 2 a 556 eeu e E EREEREER Lucs o 8 om on 8 E LCONT aen e 8 X53 426 2 10 300 SCHEMATIC DIAGRAM CONTROL UNIT 53 4260 6 UB REE pons 21 8 t a 32 parok usro se 5 2 Anoa ma 8 anos tos emu oor AH Anoa ue er Lar 16 4 1 7 pi SOE Sete 0018 vo mur T Lid 8 marsi annis 4 A d cate mE perl te 515 ats 130 P Azo Anneo pem aja oo loo 2 INPUT Di ort n we Eorum 3 NA 4 08 ors Se os Flore Los ors 5 017 or c
133. ied by the drive amplifier Q601 Q602 and 0603 to 25 27dBm output of the drive amplifier is amplified by the RF power amplifier Q606 to 5 0W 1W when the power is low The RF power amplifier is MOS FET The output of the RF power amplifier is then passed through the harmonic filter LPF and antenna switch D606 D607 are on and applied to the antenna terminal 4 5 APC Circuit The APC circuit always monitors the current flowing through the RF power amplifier Q606 and keeps a constant current The voltage drop at R642 R645 and R647 is caused by the current flowing through the RF power amplifier and this voltage is applied to the differential amplifier IC600 1 2 1C600 2 2 compares the output voltage of IC600 1 2 with the reference voltage from IC108 and the output of IC600 2 2 controls the VGG of Q602 Q603 and Q606 to make the both voltages the same The change of power high low is carried out by the change of the reference voltage Q607 0608 and 0610 are turned on and 0604 and 0605 are turned off in transmit and the APC circuit is active ANT 0601 0602 0606 0606 0607 Drive Final ANT oer Drive AMP AMP sw 1 vo vss 8842 SS REF VOL IC 108 1 600 1 600 2 2 2 Fig 6 Drive and final amplifier and APC circuit 5 PLL Frequency Synthesizer 5 1 VCT
134. ights Copyright 2007 by Kenwood Corporation All rights reserved No part of this manual may be reproduced translated distributed or transmitted in any form or by any means elec tronic mechanical photocopying recording or otherwise for any purpose without the prior written permission of Kenwood Disclaimer While every precaution has been taken in the preparation of this manual Kenwood assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the information contained herein Kenwood 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 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 Kenwood Corporation Furthermore any reselling assigning or transferring of the firmware is also strictly prohibited with out embedding the firmware in Kenwood product memories NXDN Transceivers The AMBE 2 TM voice coding technology is embedded in the firmware under the license of Digital Voice Systems Inc SYSTEM SET UP Merchandise received INTRODUCTION SCOPE OF THIS MANUAL This manual is intended for use by experienced technicians familiar with similar types of
135. iver Transceiver Transceiver Fig 1 NX 300 REALIGNMENT 5 2 Connection procedure 1 Connect the transceiver to the computer using the inter face cable and USB adapter When the interface cable is KPG 36A the KCT 53U can be used Notes You must install the KCT 53U driver in the computer to use the USB adapter KCT 53U When using the USB adapter KCT 53U for the first time plug the KCT 53U into a USB port on the computer with the computer power ON 2 When the POWER switch on user mode can be entered immediately When PC sends command the transceiver enter PC mode and PROGRAM is displayed on the LCD When data transmitting from transceiver the red LED is lights When data receiving to transceiver the green LED is lights Note The data stored in the computer must match the Model Name when it is written into the flash memory 5 3 KPG 36 KPG 36A description PC programming interface cable Option The KPG 36 36A is required to interface the transceiver to the computer It has a circuit in its D sub connector KPG 36 25 pin KPG 36A 9 pin case that converts the RS 232C logic level to the TTL level The KPG 36 36A connects the universal connector of the transceiver to the RS 232C serial port of the computer 5 4 KCT 53U description USB adapter Option The KCT 53U is a cable which connects the KPG 36A to a USB port on a computer When using the KCT 53U install the supplied CD ROM with driver sof
136. ko 2 ns 5 Teresen 2 83 426 7 10 AL AN SCHEMATIC DIAGRAM INX 300 CONTROL UNIT X53 4260 XX sano re nn BLS 46 ERO 6 mes fag Fag tk E3 sr 5 i i i i i i i i ES o E 1 pm LENT 5 wd 5 i i 3 i i mE A Rem 5 i 4 1 Tk isis i fa i 2 3188 5 ice prd ma 1 FRO CONTROL E E i se TT T n rcs EC E js B 1 Now 8 alg PEE c 18 53 54 j 8 5 ote 83 8 8 E 8 as d 3 EH
137. lifier Q600 is changed with the diode switch D601 that is controlled by the transmission power supply 50T and the diode switch D600 that is controlled by the receive power supply 50R If the 50T logic is high it is con nected to a send side pre drive Q601 If the 50T logic is low it is connected to a receive side mixer 0703 0508 0509 500 D506 D507 D510 D511 19 2MHz 1 502 0514 0517 0519 0512 Q600 0600 0601 VC PLL Loop pure TCXO Ic Filter veo sw to TX stage BES BUFF 5 90 1 504 1 2 2505 LPF Fig 7 PLL block diagram 6 Control Circuit The control circuit consists of the ASIC IC108 and its pe ripheral circuits 1 108 mainly performs the following 1 Switching between transmission and reception by PTT signal input 2 Reading system zone frequency and program data from the memory circuit 3 Sending frequency program data to the PLL 4 Controlling squelch on off by the DC voltage from the squelch circuit 5 Controlling the audio mute circuit by decode data input 6 1 ASIC The ASIC 108 is a 32 bit RISC processor equipped with 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
138. lly available one 2 Nut wrench In order to turn the volume nut and the channel selector nut use a recommendation tool KENWOOD part No W05 1123 00 3 Battery Jig W05 1370 00 Connect the power cable properly between the battery jig installed in the transceiver and the power supply and be sure output voltage and the power supply polarity prior to switching the power supply ON otherwise over voltage and reverse connection may damage the transceiver or the power supply or both Note When using the battery jig you must measure the voltage at the terminals of the battery jig Otherwise a slight voltage drop may occur within the power cable between the power supply and the battery jig especially while the transceiver transmits ci 100P 25V c2 470P 25V 1004 25 n zd Terminal Red Power cable ___ Power supply Terminal Black 37 300 38 ADJUSTMENT 4 Universal connector Use the interface cable KPG 36 36A for PC tuning or the lead wire with plug E30 3287 18 and screw 08 0535 08 for panel tuning Connect the plug to the universal connector of the transceiver and tighten the screw The lead wire with plug 0 3287 18 and screw 08 0535 08 terminals are as follows Numbers are universal connector terminal numbers Caution 1 When connecting the plug to the universal connector of the transceiver a short circuit may occur
139. lower and frequencies of 3kHz or higher are cut off and an audio range of 300Hz to 3kHz is extracted The audio signal is then pre emphasized in FM mode and synthe sized with the signals such as QT and DOT as required and is then output from IC108 In Digital mode the audio signal is converted to the 4 Level FSK base band signal and output from 1 108 DTMF and MSK base band signals are also generated by the DSP and output by IC108 LPF IC705 works as a smoothing filter The DAC 703 assigns the base band signal to the VCO and VCTCXO X500 At this time the level output according to the transmit carrier is fine adjusted according to each modulation method EXT MIC 1 102 DSP 1 716 710 1705 1 705 1 710 INT 05 0707 12 12 1 706 li 22 am 2 2 1 501 X500 sw sw amp sw ampi LPF LPF H LPF gt ope ee eee 1 2 vco he 59 16504 D703 D704 MSW 0705 0706 Fig 5 Audio band and Base band circuit 10 NX 300 CIRCUIT DESCRIPTION 4 3 VOX 716 2 2 amplifies the audio signal captured in the mi crophone The signal is then converted into the DC voltage rectified by D706 The DC voltage activates the ASIC IC 108 and the VOX starts 4 4 Drive and Final Amplifier The signal from the T R switch D601 is on is amplif
140. matrix input SIDE1 key 16 DTI 1 5 Side_2 1 Key matrix input SIDE2 key 17 18 19 yo 20 OPT2 yo 21 22 RXEO 23 RXEI 1 24 1 25 6 26 POW Solder Pad Signal Rating and Condition 1 0 Function Type Parameter Min Typ Max Unit PTT2 Digital PTT output od Output Impedance 10k o Input Digital PTT input 28 VIL 0 05 Input MDSW Digital Man down switch input 28 VIL 0 05 v GND GND GND Allowable current value mA VOH lo 5mA 40 53 O Digital Serial data output VOL lo 5mA 0 Baud Rate 19200 bps VIH 28 53 RXD Digital Serial data input VIL 0 2 v Baud Rate 19200 bps RSSI Analog RSSI output Output Impedance 10k 54 Universal connector TERMINAL FUNCTION NX 300 PinNo Name vo 9 4 Rating and Condition Type Parameter Min Typ Max Unit EXT INT speaker switch input 1 ssw 1 Digital L External speaker is M H Internal speaker ON 0 97 Y 80 load 1 Max output power 13 18 w 2 SP Analog BTL output for external speaker 1kHz Batt 7 5V DC Bias 25 v Allowable Frequency 300 3000 Hz 1160 load Max output power 0 9 14 w 3 5 Analog BTL output for external speaker 1 2 Batt 7 5V DC Bias
141. ment point Adjustment value L 1 4096 L Proper value guide Frequency adjust only H Adjustment item 33 NX 300 34 E Key operation ADJUSTMENT 5 reference level adjustments frequency Function Tuning point MHz TX MHz Ke 5 Hold 1 second Low 450 05000 450 10000 Selector Low 467 55000 467 60000 A Adjustment value up Continuation up Center 485 05000 485 10000 Adjustment value down Continuation down High 502 55000 502 60000 Side1 Auto adjustment start High 519 95000 519 90000 Side2 Wide Narrow Very narrow 181 Shift to panel test mode enter 5 reference level adjustments lt Writes the adjustment value e gt Go to next adjustment item Back to last adjustment item Orange Transmit 0 to 9 and T Adjustment item and Display Aw An Nn Nv Order Adjustmentitem Main LCD display Sub LCD display Adjustment range 1 point ADJ 1 LCD Contrast CNTR 1 256 Volume 1 1 point ADJ 2 VOL measurement value Counterclockwise Max 1 256 Volume 2 1 point ADJ 3 VOL2 VOL measurement value Clockwise Max 1 256 5 point ADJ 4 RX Assist RAST CV voltage 1 4096 5 point ADJ 5 TX Assist TAST CV voltage 1 4096 1 point ADJ 6 RTC RTC 62 1 0 1 62 5
142. ment was Caution adjustment was finished Perform the frequency finished adjustment under the following conditions Temperature range of 23 C to 27 C 473 4 F to 80 6 F The temperature is displayed on the Frequency adjustment screen of the KPG 111D and the LCD of the transceiver Use an accuracy of 0 001ppm for the SSG Use a standard oscillator if necessary 4i NX 300 ADJUSTMENT Transmitter Section Condition Measurement Adjustment kam Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 1 High power 1 AdjitemiHIPWR 1 Adj item Power Panel ANT Panel Panel 5 0W 0 2W adjust Adjust Transmit Power meter tuning 2 3A or less 2 Adj item 2 Adj item Low Ammeter mode IL HIPWRI gt LAL IPC test mode HIPWRI gt Center Press Apply HIPWRI gt High button to store the HIPWRI gt High IPC test adjustment value HIPWRI PTT Press Transmit model after all Adjust button 4L adjustment point ON Press Apply button to was adjusted Press lt key to store store the adjustment value the adjustment value 2 Low power 1 Adj item ILOPWRT 1 Adj item 08W X03W adjust Adjust Low Transmit Power 1 2 or less 2 Adj item 2 Adj item Low IL LOPWRI gt
143. mw le 5 fet wee E 2 i eR NE meta 5 maxsum 818 3 gt 37 PCR RF Bou 8 pone D p iens I x 7 I T DT 0756 m 252 amp DET 47 E AMIFDECoUPLING amp PSR fg ons 4 T unen m pem wer Bn AE HI ms si m urcecsupumat me pr al ml 49 5 2 opao 58 8 xD CONTROL pem ore al mmc cT H ue 1 E e pol 5 pru 4 Tm e lweurrur Mm LT 5 R735 1 M er TKD CONTROL 23 a woo I 77 73 er ase band NES ik ula ely gla ote 5 bl 28 2 AMDETOUTPUT es von eee di 23083 2 e s ome Beuno 23 A 217 SEHE o CAL FM xe e ET Ts LJ 8 Ix 2 HEHEHE pem 25 m SS eee m EE FT wol orn isl Ep B
144. n order to the left When you enter the password and press the or X key CLONE MODE is displayed if the entered pass word is correct If the password is incorrect CLONE LOCK is redisplayed How to enter the password using the X and xw keys K K3 models If the L xw key is pressed while CLONE LOCK is displayed the Read authorization password input screen is displayed If the key xw key is pressed while the Read authorization password input screen is displayed the number 0 to 9 blinks on the LCD When you press the 8 key the currently selected number is determined If you press the key after entering the password in this procedure CLONE MODE is displayed if the entered password is correct If the password is incorrect CLONE LOCK is redisplayed Power ON the target transceiver Connect the cloning cable part No E30 3325 05 to the universal connectors on the source and target Press the key on the source while the source displays CLONE MODE The data of the source is sent to the target While the target is receiving the data PRO GRAM is displayed When cloning of data is completed the source displays END and the target automatically operates in the User mode The target can then be oper ated by the same program as the source The other target can be continuously cloned When the 8 key on the source is pressed while the source displays END the sou
145. na switch D710 Variable Vari cap tune 0505 Transistor Buffer AMP 0507 Transistor Ripple filter Dni Diode Antenna 509 FET VCO oscillation DXU LED TXRX LED 05101617 FET 0901 Diode Reverse protection 0512 600 Transistor Buffer AMP D902 Diode BOT control 0601 Transistor 0602 FET RF drive AMP 0604 Transistor switch 0605 FET switch 0606 FET RF final AMP 0607 Transistor switch 0608 FET APC switch 0610 Transistor APC switch 700 Transistor 2nd Local buffer AMP 0701 Transistor IF AMP 0703 FET Mixer 0704 Transistor Ripple filter 0705 FET AMP 0706 FET RF AGC 0900 Transistor TXIRX LED switch 0901 FET 583 switch 0902 switch 0903 FET switch 0904 FET DC DC converter switch 0905 Transistor switch D501 Diode Ripple filter D505 Diode Bypass diode PARTS LIST NX 300 New Parts A indicates safety critical components L Scandinavia K USA Canada Parts without Parts No are not supplied Y PX Far East Hawai T England Europe Les articles non mentionnes dans le Parts No ne sont pas fournis Y AAFES Europe X Australia Other Areas Teile ohne Parts No werden nicht geliefert NX 300 50 6120 CONTROL UNIT X53 4260 XX Ref No Address Parts No Description Destination Ref No Address Parts No Description Destination
146. ng through the BPF circuit Then the amplified signal is converted to a DC signal by the detection circuit The con verted signal is fed back to IC108 4 Transmitter System 4 1 Audio Band Circuit The signal from the internal microphone goes through the mute switch Q5 When the SP MIC is not attached the microphone switching terminal MSW on the universal con nector becomes High and the mute switch Q5 is turned on When the SP MIC is attached MSW is connected to GND inside the SP MIC For this reason O5 is turned off the inter nal microphone is muted and only the input of the external microphone is supplied to the microphone amplifier The sig nal from the microphone goes through the mute switch 0707 and is amplified by 716 1 2 and limited by the AGC circuit which is composed of D703 D704 Q705 and Q706 0406 B 0407 1 409 AF signal gt INT SP from 1 408 1 SHUT DOWN 1 EXT SP 1 SHUT DOWN Fig 3 Audio amplifier circuit 1702 1 2 1 711 2 22 07044 0705 1 711 1 2 ASAP ipe 7 Her ASQDET 1C108 Fig 4 Squelch circuit 4 2 Base Band Circuit The audio signal output from the base band circuit is con verted to digital data with a sampling frequency of 48 kHz This digital data is sent to the DSP 102 and voice signals of 300Hz or
147. o Description Destination C131 CKI3HBIAIOK CHIPC K CK73HBIESB2K CHPC 6800PF 467 488 CHPC C133 CS7ICPOJIOOM CHIPTNTL 100 C134 CK73HBIEIO3K CHPC 0000 K C469470 CK 8HBIHIDK CHPC 1000PF K C135 CK73HBIHIO2K CHPC 1000PF 001 CHPC K C136 CK73HBIENOGK CHIPC O010UF K C703 CK73GBOJA75K CHPC K 1 CHPC 108 K 708 705 CK73HBIAIOGK CHPC C706 CHIPC J C138 140 CK73HBIAIOAK O10UF K cut CC73HCHIHIOIJ CHPC J c CC73HCHIH270J cHIPC ZPF J C142 CS77CPOJIOOM CHPTNTL 100 63W C708 CK73HBIATOAK O10UF K C143 CK73HBIEIO3K CHIPC 709 CHPC C14 CK73GBIEIOSK 10UF K CK73HBIEIO3K ODIUFK CKT3HBIATOAK CHPC O10UF K 145 148 CK73HBIAIOAK O10UF K C149 CK73HBIENOGK CHPC O010UF K CK SHBIEUSK CHPC OM0UF K C150 CK73GBIEI0SK K C713 CK73HBIH332K CHPC K C151 155 CKI3HBIAIOK CHPC O10UF cna CK SHBIHIZK CHPC T20PF 156157 CK73HBIHIO2K CHPC 100PF K cns CK73HBIATOAK CHPC O10UF K C716 CK73HBIHGBIK CHPC 6B0PF CK73HBIEO3K CHPC C159 CK73HBIAIOAK CHPC O10UF CK73HBIEIO3K _ CHPC OOIOUF K 160 161 CK73HBIESB2K CHPC 6B00PF K CK73HBIHIS
148. oss de e FEL HR a 8 a A toa ra T T 3 Tes qu ms o mm EC pec m uL TI eee _ fren umet Ioas PUES 2 ae win eee 91 u z Y ee ri A I l Ti ome Bebe ae oe n Wen 8 se 80 re eee Lm Ed p B EN mal is lla mm E Esos e P An PD xevoo Sexe 4 i 4 oso 12ME sot Hue zi mex E 5 E i 5 PES H m Bru pm ps m orem 2 eh Be L DONC CNE AD EP 2 i 3 any P LN A Cd E 1 YOURE REGULATOR TT 2 4 we Mo AD a 8 83 7 va gt 28 1 2 n 4 2050 le e Am 7 4 i 8 Te m we n SES H am LEY 8 E 5 voles zs nem la E ET i m am woes ze SEHE a o rei 5 DISSE rn m 2
149. pi 7c 8M D1 sp pu 7L D21 8M D2 sc 012 7M 022 8L D3 7M 023 9L 64 65 G H 1 J K L M N a P a 5 NX 300 PC BOARD PC NX 300 CONTROL UNIT X53 4260 XX 10 11 CONTROL UNIT 53 4260 10 11 Foil side view J79 0131 19 v Foil side view J79 0131 19 em 02
150. put 2 28 33 19 7 WO Digital VIL 0 0 5 v 20 2 Output 25 6 28 35 VOL 0 05 v Input VIH 28 33 v 3 26P_RD Digital VIL 0 05 v Baud rate 19200 bps Output VOH 28 35 v 4 26PTD O Digital VOL 0 05 v Baud rate 19200 bps Input Amplitude Square wave 33 Vp p Coupling Capacitor 0 01 uF 15 OPT9 1 Analog Input Impedance 22k Q Allowable Frequency 300 3000 Hz Output Amplitude 1 2 60 deviation 0 9 13 17 Vp p Coupling Capacitor uF 7 O Analog Digital Output Impedance 22k Q Allowable Frequency 300 3000 Hz Input Amplitude 1kHz 60 deviation 0 3 05 07 Vp p Coupling Capacitor uF 11 Analog eee Input Impedance 12k Allowable Frequency 300 3000 Hz Output Amplitude 1 2 60 deviation 30 50 70 mVp p Coupling Capacitor uF 12 AO Analog ial ae Output Impedance 35k Allowable Frequency 300 3000 Hz Input Amplitude 1kHz 60 deviation 0 8 14 14 Vp p Coupling Capacitor uF 16 Analog ib Input Impedance 22k Allowable Frequency 300 3000 Hz 56 NX 300 TERMINAL FUNCTION Rating and Condition Pin Name 1 0 Signal Type Parameter Min Typ Max Unit Output Amplitude 1kHz 60 deviation while external MIC 160 260 360 while internal 130 mVp p 21 Analog Coupling Capacitor 0 uF Output Impedance 2 2k Allowable Frequency 30
151. rce displays CLONE MODE Carry out the operation in step 4 to 6 Notes Cannot be cloned if the password overwrite password is programmed to the target Model Name must be same to clone the transceiver Cloning cable E30 3325 05 Fig 2 8 Firmware Version Information Press and hold the Side1 key while turning the transceiver power ON and then keep pressing and holding the Side1 key the firmware version information appears on the LCD NX 300 1 2 DISASSEMBLY FOR REPAIR Precautions for Waterproof Do not remove the black sheet from the reverse side of the transceiver refer to the illustration right Removal of this sheet decreases the waterproof efficiency of the transceiver and may cause malfunctions if water seeps into the transceiver The orange packing material on the reverse side of the transceiver is important with respect to the waterproof efficiency of the transceiver Do not place stickers or other materials on or around the packing material shown in the figure or on the reverse side of the battery pack Doing so will impair the waterproof efficiency of the transceiver and may cause it to break down Additionally in order to prevent damage to the packing material do not allow it to come in contact with foreign materials Precautions for Disassembly lil Removing the TX RX unit from the chassis T 2 3 4 Remove the cord ASSY from the connector of the TX RX unit CN900
152. rom SSG press SSG output 12dB SINAD level 3dB Apply button to 12dB SINAD level 3dB MOD 1kHz 1 5kHz store the MOD 1kHz E1 5kHz adjustment value TAnalog 1 Adj item Aw RRSSIT 1 Adj 8551 Wide Adjust Reference Analog 2 Adj item Wide RRSSI gt 2 Adj item ILow lAwL RRSSII gt AWC RRSSII Center IAwH RRSSII gt High RRSSI High Adjust SSG output SSG output 12dB SINAD level 3dB 12dB SINAD level 3dB MOD 1kHz 3kHz MOD 1kHz 3kHz INXDN Very 1 Adj RRSSIT 1 Adj item IRSSI Narrow Adjust Reference NXDN 2 Adj item Very Narrow RRSSII 2 Adj item ILow INvL RRSSII INvC RRSSI gt Center INvH RRSSI gt INvH RRSSI High Adjust SSG output SSG output 12dB SINAD level for 3 The RSSI reference adjust of Narrow is common with the RSSI reference adjust Analog 48 ADJUSTMENT NX 300 Condition Measurement Adjustment Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 5 Squelch 1 Adj item An SOL 1 Adj item Open 556 Panel ANT Panel tuning mode Open Adjust Squelch Analog Universal After input signal adjust 4 2 Adj item Narrow Oscilloscope connector from SSG press lt 500 2 Adj item Low key to store the Analog
153. se Audio Distortion Audio Output 500mW 89 TRANSMITTER RF Power Output 1 7048 Analog 25kHz 45dB Analog 12 5kHz 4048 Less than 3 16 11KOF3E 8K30F1E 8K30F1D 8K30F7W 4KOOF1E 4KOOF1D AKOOF7W 4 20 Spurious Response FM Hum and Noise Audio Distortion Modulation Analog measurements made per TIA EIA 603 KENWOOD reserves the right to change specifications without prior notice or obligation Kenwood Corporation 2967 3 Ishikawa machi Hachioji shi Tokyo 192 8525 Japan Kenwood U S A Corporation Kenwood Electronics Europe B V BOX 22745 2201 East Dominguez Street Long Beach Amsterdamseweg 37 1422 AC Uithoorn The Netherlands CARESS Kenwood Electronics Italia 5 Kenwood Electronics Canada Inc Via G Sirtori 7 9 20129 Milano Italy 6070 Kestrel Road Mississauga Ontario Canada LST 158 Kenwood Ib rica S A Kenwood Electronics Deutschland GmbH Bolivia 239 08020 Barcelona Spain Rembr cker Str 15 63150 Heusenstamm Germany Kenwood Electronics Australia Pty Ltd Kenwood Electronics Belgium N V A C N 001 499 074 Leuvensesteenweg 248 J 1800 Vilvoorde Belgium 16 Giffnock Avenue Centrecourt Estate North Ryde N S W 2113 Australia Kenwood Electronics France S A Kenwood Electronics Hong Kong Ltd L Etoile Paris Nord 2 50 All e des Impressionnistes Unit 3712 3724 Level 37 Tower one Metroplaza 223 Hing Fong Road
154. ss Transmit button TWidel 1 Adj tem TAw ADEVI 1 Adj tem Maximum Write the same 4150 4250 PC test mode Press Apply All button to store the adjustment value after all adjustment point was adjusted 2 Refer to the Mode Signaling Necessary adjustment and order table on page 46 43 NX 300 ADJUSTMENT Condition Measurement Adjustment Panel tuning mode test mode Test Unit Terminal Unit Parts Method Specifications equipment Remarks 6 QT Deviation 1 Adj item An QT 1 Adjitem QT Deviation Deviation Panel ANT Write the value as 0 35kHz 0 05kHz adjust 2 Adjust Analog Narrow meter tuning followings Deviation meter Deviation meter Oscilloscope mode 513 Reference Narrow LPF 3kHz LPF KHZ LANI value HPF OFF HPF OFF PTT ON PTT Press Transmit Press lt key to store button PC test the adjustment value Press Apply button to mode store the adjustment value PIS Wide Adj OTT 17 Adj 07 Deviation 0 75 2 0 05 2 Adjust Analog Widel ON PTT Press Transmit Press lt key to store button the adjustment value Press Apply button to store the adjustment value 7 DOT 1 Adj 1 Adj Write the value as Deviation Adjust Deviation Analog followings adjust 2 De
155. t SIDE1 2 key 17 OPTS 33 5461 Key matrix output SIDE1 key 18 34 WN connection Test pad 19 1 0 35 5001 PLL serial data input 20 yo 36 Side2 O Key matrix output SIDE2 key 21 o 37 RF 1 PLL enable input 53 NX 300 TERMINAL FUNCTION PinNo Name 1 0 Function X57 7370 10 B 2 DSW APC voltage discharge switch control input Function 39 1 APC control input CN737 40 APCSW 1 APC switch control input 41 1 VCO modulation input 2 42 THP O Thermistor voltage output 3 26 1 PLD O PLL lock detect output 4 26 44 RFAGC RFAGC control input 8 45 5 PLL clock input 6 opra 46 GND GND 7 omo o 47 SDET Battery select output 8 opts o 48 GND GND 8 DGND 5 49 No connection 10 AGND 2 50 IF output 11 CN901 12 NC Y DER V intemal FTT input 15 Refer to CN737 Option board 2 GND WIESE g connector specification SideG Key matrix output SIDE1 2 key 15 OPTS eseribed on pages 60 to 63 Side1 I Key
156. the following conditions the 5 PC Mode transceiver forcibly enters Unprogramming mode FPU data is not written No channel are programmed 5 1 Preface The transceiver is programmed by using a personal com puter programming interface KPG 36 36A USB adapter When using kill KCT 53U and programming software KPG 111D The ESN is not written The programming software can be used with an IBM PC Broken hardware has been detected or compatible Figure 1 shows the setup of an IBM PC for Panel test mode Used by the dealer to check the funda programming mental characteristics Paneltuning mode Used by the dealer to tune the transceiver PC mode Used for communication between the transceiver and PC IBM compatible Data programming Used to read and write frequency data and mode other features to and from the transceiver PC test mode Used to check the transceiver using the PC This feature is included in the FPU See pages 39 to 51 KPG 36 or KPG 36A or KPG 36A KCT 53U Illustration is KPG 36 Firmware Used when changing the main program programming mode of the flash memory Clone mode Used to transfer programming data from one transceiver to another Firmware version Used to confirm the internal firmware information version PC PC PC D SUB D SUB 25 pin 9 USB KCT 53U KPG 36 KPG 36A KPG 36A Transce
157. tible programming interface KPG 36 36A USB adapter KCT 53U and programming software KPG 111D NX 300 K3 Yes The frequency and signaling data are programmed for the transceiver C Transceiver programming are required for programming 1 C Are you using the optional antenna KRA 23 or KRA 27 NO Optional antenna YES YES Option X Are you using the speaker microphone KMC 25 Speaker microphone NO Option 1 YES Are you using the voice guide amp storage unit 5 1 NO Option 1 Delivery NX 300 REALIGNMENT 1 Modes 2 How to Enter Each Mode Mode Operation r1 User mode User mode Power ON Panel test mode 2 Power ON PC mods pee For FE Panel tuning mode Press the 8 key in Panel test mode Panel test mode Panel tuning mode Firmware Power ON programming mode PE mode Data programming mode Clone mode lt I Power ON Firmware version 88611 Power ON Firmware PC test mode PC tuning mode information programming mode Clone mode 3 Panel Test Mode Setting method refer to ADJUSTMENT Firmware version information 4 Panel Tuning Mode Mode Function Setting method refer to ADJUSTMENT User mode For normal use Unprogramming mode If you turn the transceiver power ON using any one of
158. ton Press Apply button to store the adjustment value 1 1 Adj item IMSK Write the value 1 50 2 0 05 2 Deviation Adjust Deviation Analog followings adjust 2 Deviation meter Narrow 513 Reference LPF 15kHz Deviation meter value Narrow HPF OFF LPF 15kHz PTT ON HPF OFF Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value TWide TT Adj MSKI Adj 00 2 0 05 2 Adjust Deviation Analog PTT ON Wide Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value TZCWID 1 Adj CWIDI 1 Adj tem ICW ID Write the value as 00KHz 0 10KHz Deviation Adjust Deviation NXDN followings adjust 2 Deviation meter Very Narrow 376 Reference LPF 15kHz Deviation meter value Very Narrow HPF OFF LPF 15kHz PTT ON HPF OFF Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value 52 Refer to the Mode Signaling Necessary adjustment and order table on page 46 45 NX 300 ADJUSTMENT Condition Measurement Adjustment hem Panel tuning mode test mode Test Unit Terminal Unit Parts M
159. transceiver designed to operate in the frequency range of 450 to 520MHz The unit consists of 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 superheterodyne using the first intermediate frequency IF of 58 05MHz and the second IF of 450kHz Incoming signals from the antenna are mixed with the local signal from the PLL circuit to pro duce the first IF of 58 05 2 This is then mixed with the 57 6MHz second local oscillator output to produce the 450kHz second IF The transmit signal frequency is gener ated by the PLL VCO and modulated by the signal from the DSP It is then amplified and fed to the antenna ANT ane 450kHz 1st MIX MCF SP RF wx sw IF AMP 58 05MHz 192MHz x3 3 7 3 391 95 8 MIC x 461 95MHz PE d Hs 71 AMP LAMP 450 520MHz Fig 1 Frequency configuration 3 Receiver System 3 1 RF Circuit An incoming RF signal from the antenna terminal is passed through the antenna switch D606 607 709 711 and then the bandpass filter L721 L722 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
160. tware in the computer The KCT 53U driver runs under Windows 2000 or XP 5 5 Programming software KPG 111D description The KPG 111D is the programming software for the trans ceiver supplied on a CD ROM This software runs under MS Windows 2000 or XP on an IBM PC or compatible machine 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 6 Firmware Programming Mode 6 1 Preface Flash memory is mounted on the transceiver This allows the transceiver to be upgraded when new features are re leased in the future For details on how to obtain the firm ware contact Customer Service 6 2 Connection procedure Connect the transceiver to the personal computer IBM PC or compatible using the interface cable KPG 36 36A and USB adapter KCT 53U when the interface cable is KPG 36A the KCT 53U can be used Connection is the same as in the PC Mode 6 3 Programming 1 Start up the firmware programming software Fpro exe version 4 0 or later 2 Set the communications speed normally 115200 bps and communications port in the configuration item 3 Set the firmware to be updated by File name item 4 Press and hold the 8 key while turning the transceiver power ON Then the orange LED on the transceiver lights and PROGRAM 115200 is displayed 5 Check the connection between the transceiver and the p
161. uency Range Modulation Output 0 001ppm When performing the Frequency adjustment the following accuracy is necessary Use a standard oscillator for adjustments if necessary 400 to 520MHz Frequency modulation and external modulation 127dBm 0 1 V to greater than 20dBm 22 4mV 2 Power Meter Input Impedance Operation Frequency Measurement Range 500 400 to 520MHz Vicinity of 10W 3 Deviation Meter Frequency Range 400 to 520 2 4 Digital Volt Meter DVM Measuring Range Input Impedance TOmV to 10V DC High input impedance for minimum circuit loading 5 Oscilloscope DC through 30MHz 6 High Sensitivity Frequency Counter Frequency Range Frequency Stability 10Hz to 1000MHz 0 2ppm or less 7 Ammeter 5A 8 AF Volt Meter Frequency Range 50Hz to 10kHz AF VTVM Voltage Range 1mV to 10V 9 Audio Generator AG Frequency Range 50Hz to or more Output 0to1V 10 Distortion Meter Capability 3 or less at 2 Input Level 50mV to 10Vrms 11 80 Dummy Load Approx 8Q 3W 12 Regulated Power Supply 5V to 10V approx Useful if ammeter equipped E The following parts are required for adjustment 1 Antenna connector adapter The antenna connector of this transceiver uses SMA terminal Use an antenna connector adapter SMA f BNC f or SMA f N f for adjustment The adapter is not provided as an option so buy a commercia
162. version information appears on the LCD mo mentarily Test mode can be inhibited by programming To exit test mode turn the transceiver power OFF The follow ing functions are available in test mode Key operation FNC not appears on the sub LCD display Ke Y Function Display Selector 5 Push Test channel up A Hold Test channel up Channel No continuously Push Test channel down Hold Test channel down Channel No continuously sider Push Sauelch level up Squelch level Hold Squelch off Squelch off icon appears Wide w Side2 Wide Narrow Very narrow Narrow n Very narrow v 181 Shift to panel tuning mode appears on the Function on sub LCD display lt MSK 1200bps 2400bps 2400bps 5 icon appears Push Test signaling a gt Hold Test signaling up Signaling No continuously Orangel 32 PTI Transmit Use as the DTMF keypad 10 to 9 If a key is pressed during and transmission the 6 corresponding to the key that was presses is sent FNC appears on the sub LCD display Key Function Display Selector gt E IAI Function off w Analog NXDN od ie ISide1 Function off Side2 LCD all lights LCD all point appears 181 High power Low power d sp Function off lt I Compander on off On y icon
163. viation meter Narrow 415 Reference LPF 3kHz Deviation meter value Narrow HPF OFF LPF 3kHz PTT ON HPF OFF Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value Wide Adj DOTI 1 Adj 0 75 2 0 05 2 Adjust Deviation Analog PTT ON Wide Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value LTR 1 Adj 1 Adj Write the value as 0 75KH2 0 05kHz Deviation Adjust Deviation Analog followings adjust 2 Deviation meter Narrow 465 Reference LPF 3kHz Deviation meter value Narrow HPF OFF LPF 3kHz PTT ON HPF OFF Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value Wide Adj LTR 1 Adj tem LTR T OOKHZE0 O5KHz Adjust Deviation Analog Wide Press lt key to store PTT Press Transmit the adjustment value button Press Apply button to store the adjustment value 2 Refer to the Mode Signaling Necessary adjustment and order table on page 46 NX 300 ADJUSTMENT Condition Measurement Adjustment Panel tuning mode test mode Test Unit Termin

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