Home

TH-79 Service manual

1. 1 3D 01 2089 02 METALLIC 2 20 02 1784 03 PLASTIC CABINET BT 9 FRONT 3 20 02 1785 02 PLASTIC CABINET BT 9 REAR 4 1B 02 1806 03 PLASTIC CABINET ASSY KP 4 1B A02 1807 03 PLASTIC CABINET ASSY MM2M3 4 1B A02 1807 03 PLASTIC CABINET ASSY 4 1B 02 1844 03 PLASTIC CABINET ASSY 2 4 1 02 1844 03 PLASTIC CABINET ASSY E3E9 5 1C 13 1610 02 6 20 62 0334 02 CREAR 7 62 0348 13 PANEL ASSY FRONT 8 1A 09 0342 03 MIC ZSP 9 1 B09 0343 03 CAP CTCSS 10 18 10 1214 24 FRONT GLASS 106 04 AIR 12 2 B58 0716 05 LCD ASSY 15 1 842 3343 04 LABEL 14 20 842 3394 14 LABEL FCC K 19 30 842 5074 04 LABEL NI CD K 16 842 5526 04 LABEL HYATT K 17 46 0310 03 WARRANTY CARD ACSY IE 2 17 B46 0310 03 WARRANTY CARD ACSY 17 B46 0410 30 WARRANTY CARD 5 17 46 0422 00 WARRANTY CARD ACSY 18 862 0423 00 INSTRUCTION MANUAL 5 19 862 0424 00 INSTRUCTION MANUAL ACSY JE 2 20 862 0425 00 INSTRUCTION MANUAL M2M3 20 u B62 0425 00 INSTRUCTISN MANUAL ACSY M4PE3 20 62 0425 00 INSTRUCTION MANUAL 5 9 21 B62 0467 00 INSTRUCTION MANUAL 5 M2M3 21 B62 0467 00 INSTRUCTION MANUAL ACSY M4PE3 21 62 0467 00 INSTRUCTION MANUAL ACSY 9
2. 0 10 6335 92 0564 ELECTRA 220 6 3WV C336 CK 3HB1 a IK CHIP 47 337 2 TANTAL 6 3WV C338 BATIK CHIP 470PF K C339 ICKY S3HHIRTO K CHIP 1000PF K 29 9 New Parts Parts without Parts No are not supplled Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Ref No Address Parts E Description 8 d Parts No 30 C340 92 0576 05 TANTAL 1UE 6 3WV C342 CK73GB1H103K CHIP C 0 01UF K C343 CK73HB1EA71K CHIP C344 92 0594 05 TANTAL 4 70 345 CK73GB1H103K CHIP C 0 01UF K C346 347 73081 471 CHIP A70PF K C348 CK73HB1C103K CHIP C 0 01UF K C349 CK73GB1H103K CHIP C 0 01UF K C350 C92 0564 05 ELECTRO 22UF 6 3WV C351 CK73HB1EA71K CHIP C 470PF K C352 C92 0594 05 TANTAL 4 7UF C353 CK73HB1EA71K CHIP C A70PF K C354 CK73GR1C6333K 0 03308 K C355 CK 73HBIEATIK CHIP C 470PB K 0356 358 CK73GR1CA73K CHIP C 0 04702 K C359 C92 0618 05 IELECTRS 100 16 C360 CK73GB1H471K ICHIP 470 C361 CK73GR1C333K CHIP C 0 033UF K C362 CK73GB1HA71K CHIP A70PF K C363 CK73HB1EA71K CHIP C 47 0PF K C364 CK73GR1C333K CHIP C 0 033UF C365 366 CK73HB1EA471K CHIP C 47 C367 368 CK 7
3. 1 group or more illuminates UHF receiver section 1 Frequency 435 050MHz 444 O50MHz SSG 73dBm 50uv 1 Large inout S N 2 Sensitivity 1 Frequency 435 050MHz 444 050MHz SSG 121dBm 0 2uV 2 Frequency 430 050MHz E M T X 438 050MHz 3 Frequency 439 950MHz E M T X 449 950MHz 1 Frequency 439 950MHz 449 950MHz K P 3 Consumption current SSG OFF ANT SSG EXT SP Oscilloscope AFVM Distortion factor meter Ammeter 1 Frequency 435 050MHz E M T X 444 050MHz K P SSG 121dBm 3dBm 5 Tight squelch 1 Frequency 435 050 2 444 050 SQL level SSG OFF 2 SSG 113 5 SUB VHF receiver section 1 Frequency 145 050MHz 146 050MHz K P X M SSG 73dBm 50uV 1 Large input S N 2 Sensitivity 1 Frequency 145 050MHz E T 146 050MH2 K P X M SSG 117dBm 0 32yuV 2 Frequency 144 050 2 3 Frequency 145 950MHz E T 147 950MHz K P M X 1 Frequency 144 050MHz SSG 120dBm 3dBm 3 S meter 50 Confirmation 34dB or more Confirmation 12dB SINAD or more Confirmation SOMA or less SSG ANT LCD SSG EXT SP Oscilloscope AFVM Distortion factor meter
4. Confirmation 1 group or more illuminates After pressing SQL key rotate the encoder right to make the display becom NENNEN Close squelch Confirmation SQL level return 00 Open sqeulch Confirmation 3448 or more Confirmation 12dB SINAD or more Confirmation 1 group cr more illuminates 9 ADJUSTMENT UHF Transmitter section 2 Measure point Adjustment point Condition Test E est equipment Unit erminal Unit x Parts Method 1 Transmission 1 Frequency 439 975MHz M E T X Power meter ANT TX RX TC1 Match to display 200Hz frequency 449 975MHz K P f coumter 8 7 frequency ON iz 2 Power 1 BATT TERMINAL 9 6V Power meter ANT TX RX VR30 Adjust to 30mW 5 Frequency 430 000MHz Ammeter G 7 438 000 2 OW EL PTT JOWN ON confirmation 1 8A or less 3 Frequency 434 975MHz M E T X 444 000MHz K P Frequency 439 975MHz M E T X 449 97 5MHz Specification 4 BATT TERMINAL 4 8 Frequency 439 975MHz 449 975MHz Confirmation Reduce voltage 4 5 7 3 1 95A or less 5 DC 13 8V Frequency 434 975MHz 444 000 2 Confirmation PTT ON 3 DEV 1 F
5. B P T LOEHA 1 3NOL TR an 0 0 16044 E mmm 013894 91 310009 LNY 4 80521 Xo JHA 1 Kga 5252 WE 1658 e PUEDES E ETE 85 ASA NSN 8 SHA on NLE ALE I SEEDS Pal HEHA 1 iu 725 825 00121 924 tM 33n00W MS INV ene v03A099121 831113 5 i 0621 4001 026 NLE nie l iny 24 00 702 618 380 89 rsz 52 Liot 11801 8129 ody mae ta 31113 1Sn Ov H3MOd 85 88 addy nog er m E bk o NR UD HERES 3 1 0 18 1 8 16 42018 AV 6 A V 6Z HL 9 CTCSS UNIT X52 3290 00 TSU 8 SC 41 42 43 SOFT CASE BT 9 BATTERY CASE CTCSS UNIT X52 3290 00 TSU 8 The details refer to TSU 8 Service Manual B51 8248 00 SCHEMATIC DIAGRAM X52 5290 00 2 R3 1000 IC 1 2341 RXIN BIAS TO 220K AGND AGNDIN TO RXTO TL INO 1 4 lun TLINN TLINP DREF 2 3 22 5 41 EXTERNAL VIEW SC 42 EXTERNAL VIEW S SIZE With P
6. 22252222 7 o 75 gt TON gt G O OQ Q n lt lt X x oc x x gt D D Q no Q n n O O O O OO O O OOO O OO O O O P15 ANI5 1 RESET P16 ANI6 o 2 O P127 RTP7 P17 ANI7 O 3 9 55 5 P130 ANOO O P124 RTP4 P131 ANO1 6 AVREF1 7 gt P122 RTP2 P70 SI2 RxD a 8 P121 RTP1 P71 SO2 TxD o 2 P120 RTPO P72 SCK2 ASCK P37 P20 SM P36 BUZ P21 SO1 O P35 PCL 22 5 1 o O 4 12 P23 STB O P33 TI1 P24 BUSY P32 TO2 P25 SIO SBO o P31 TO1 P26 SO0 SB1 27 5 2 Pe7 ASTB P40 ADO 2 P66 WAIT P41 AD1 P65 WR Vss P60 P61 P62 P63 P64 RD P42 AD2 o P43 AD3 o P44 AD4 o P45 AD5 o P46 AD6 P47 AD7 P50 A8 o P51 A9 P52 A10 P53 A11 P54 A12 P55 A13 P56 A14 57 15 Contents clock output TSU 8 enable output RS 232C reception TSU 8 detect input L ACTIVE RS 232C transmission Cross point switch LOAD Main power supply regulation H ON Left VOL side high bypass filter power supply H ON Shift register 1 CONT side data output Microphone amp speaker attenuator H ON Right VOL side high bypass filter power supply H ON E PROM data in out put Microphone mute Lighting illumination regulati
7. 5 CHIP M3MAE 6222 CC736CH1H1R5C CHIP C 2 9 C223 CC73GCH1H180J CHIP C224 73 1 0801 CHIP C225 0 CHIP 1000PF K C226 6 SPE 5 2227 GG 7 3G6CHIHIRSC CHIP 1 SPF C C227 CG736CHIHIRSCG CHIP t 1 5 C227 CHIP ta 228 CG74366HIHUAUC CHIP 228 2 30 1 06401 CHIP D 6220 IGO AGCH HU amp UD GHIP D C228 736 1 601 CHLP C D C229 iCC7 3HCHTET00D 9 PARTS LIST Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Ref No Address Parts No Description Parts SMES Bis BB S X X 0230 x CC JHCH18150J CHIP C 15 5221 CC73HCH1E330J CHIP 33bF J 0232 CC73GCH1H020C CHIP 2 C242 73 185 CHIP C 1 5 0249 CC73GCHIHIRSC CHIP C 1 5PF C C232 CC73GCHT1H1R5C CHIP 1 5 0234 CC73GCH1H080D CHIP C235 CC 23G6H1H270 ICHIP 2 1 C236 COUSGCHTHOS50C ICHIP 5PH C237 GK7Z5GBTIHTOUZK CHIP 1000bPF K C238 GU ZSHOH He rau TSPP J 239 IK CHIP A70PF K C240 CC7 3RHCGHTH120J CHIP 1 2
8. 2 106 3 L0 N2 100 JV 2 i 2 Q NOILdO La 278 18 8 51 UE gt 2 LINN 3H 00 0626 290 55010 TOHINOO ODA um 219 XX 25 Y P 58 a Or ag O ots ats ZOEND FF c y 3 20702 gt 0 0 0 0 7 2 spits Cee te o n SLHONVO 1 dO iSd n H31HOfWQ JH ANY 24 D xK SX 2 9 3 XX SX SX J V 6 28 L8 WE 1 tow AS 6043 l an 1 1H3S8Sy 03805291 1 1506108 5 EE 4 230 209 01551 1 1HWSOS SP 10551 580 ix 2 686 110 2088081 FERI HdW3 3Q HNGO SY CH ZN W 619 15270322 588 138 282 x i L9va H31S 03H 131 5 68 910 2088081 80 TUE 23 9 19 70551 4 a903 ix NHEAHE ADENDE ASHE v 1HE NSHE 9 OSHEETHE SH HNI 31 32v l 31 Wd LNO N oL zm NO gt se 220 sza 810 Ea 7481 222 0 Rue 0 H 266 E LINN Lid
9. CHIP ICHIP CHIP CHIP Cito EC CIO Ku Ca Cs Cots Gat Cr C Cu 1 f 2 5 sew Ne TANTAL Description B a 470 12 68PF 47 I2PP LORE 100 0 0108 470PF LOUPE 1000 2DF BPH OOOPF 020108 470 1000PP 1000PF 68 220 470 4 7UF APF 298 0 010 47 J 01UF TH 79 A E TX RX UNIT X57 440X XX C ARO Ces ACC I LAN A WG lt AGMA XTMM2 M3M4E 9 2 M3M4E EZESES XTMM2 M3MAE 2 9 27 9 Parts without Parts not supplied Les articles non mentionnes dans le Parts no sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XxX 28 Ref Address New Parts No Description Desti Parts nation SMBS f 85 e m C180 7 1 102 CHIP 1000PF K C181 CK73HB1EA71K CHIP C 470 C182 CC73HCH1E150J CHIP C 15 4 C183 ICC73HCHIEU60D CHIP 6 0 C184 10 73 1 102 CHIP 1000PF K 185 7 3 471 CHIP 4 70PF C18
10. FIXED INDUCTGRCISBNH FIXED INDUCTO R 390NH FIXED INDUCTSRCI2NH FIXED INDUCTSRC22NH FIXED INDUCTQRC6 8NH FIXED INDUCTSRC6 8NH FIXED INDUCTOR 6 8NH FIXED INDUCTO R 18NH FIXED INDUCTOR 22NH FIXED INDUCTOR C18NH FIXED INDUCT amp RCIOONHD FIXED INDUCTSRCS56NH FIXED INDUCTQRC12NH FIXED INDUCTGR C1ISNH FIXED INDUCTSRCISNH FIXED INDUCTSRC15NHD FIXED INDUCTGRC27NH FIXED INDUCTSRC27NH FIXED INDUCTGR 3 9NH FIXED INDUCTOR 3 9NH FIXED INDUCTSUR C3 9NH FIXED INDUCTGRCA NH FIXED INDUCT R 4 7NH FIXED INDUCTQR 4 7NH FIXED INDUCTSRCS6NH FIXED INDUCTSRC27NH FIXED INDUCTGSRC68NH FIXED INDUCTGSR CI2NH FIXED INDUCTOR 15NH FIXED INDUCTORCISNH FIXED TNDUCTORCISNH FIXED LNDUCTOR C1UH FIXED nu s cma F I XED INDUCTOR CA oT FIXED ete TAR C ZONE FIXED DUCTNRC6BNHD FIXED HIXED INDUC TOR 33NH F lX INDUCTSRC270NH 9 543 FIXED INDUCTSRCIOONH FILTERC146 440MHZ SMALL SMALL FIXED INDUCTQRC3 S9NH FIXED INDUCTGR 3 9NH XTMM2 M3MAE 2 9 2 M3M4E E2E3E9 2 M3MAE 2 9 2 M3MAE EZESES XTMM2 M3MAE 2 9 2 M3M4E E2E3EF9 XTMM2 M3MAE New Parts Parts without Parts No are not ohne Parts No werden nic Ref 5 61 62 L63 1 64 565 166 L67 168 69 L68 69 L68 269
11. 1 12 8MHz 1511 Buffer amplifier 25 5066 Buffer Buffer Excitation Excitation Power amplifier amplifier amplifier amplifier amplifier 25K238 25 4726 25 4726 2SC4083 2563356 10 01 Fig 3 Transmission system diagram 3 1 Modulation circuit The audio signal from the microphone is subjected to pre emphasis limiter amplification and splatter filtering by the IC308 TA75W558FU VHF UHF switching is done by 0337 and fre quency deviation is adjusted by VR301 and 302 The modulation signal is applied to the modulation varicaps of the VCOs for both VHF and UHF and undergoes reactance modulation When is used the input terminals are shorted at Q301 3 2 Driver final amplifier VHF band VCO output is amplified by a two stage and UHF band VCO output by a three stage amplifier after which they are each input to their respective power modules After passing through each band s antenna switches the output passes through the chip duplexer 60 and is supplied to the antenna 3 3 APC circuit The APC circuit is for stabilizing transmission output It de tects the power module s drain current and regulates the trans mission output We shall explain using the UHF band as an ex ample Fig 4 To differential DC amplifier 0317 is applied the reference voltage obtained by potential division of voltage regulated zener diode D316 through transmission output adjustment VR307 EL power R420 V
12. 301 309 L310 L312 316 L319 320 L321 322 X1 X2 X301 XF1 2 CP301 302 CP303 CP304 CP 305 R1 R2 4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R15 R16 R17 R19 R20 R21 R22 R23 R24 R25 426 R27 R28 R29 R30 R31 R32 R33 R36 R37 R38 Address fr 9 5 115 Les articles mentionnes dans le Parts sont pas fournis suoplled TX RX UNIT X57 440X XX ht geliefert Parts No Description Parts 5 L40 3961 38 SMALL FIXED INDUCT R 3 9NH L40 1092 81 SMALL FIXED INDUCTOR 1 34 1333 05 COLL 8 57 34 1327 05 COIL 72519 1 40 7271 39 FLEXED TNDUCTSRC22NH h40 1871 46 SMALL FIXED INDUCTRRCTBNHD 0 38 05 CARE iL Aue tay 45 SMALLS FIXED TNDUGCT RCTONH j LAO0 107 35 SMALL FTXED INDUCTSRCTONH 140 101 535 SMALL FIXED TNDUCT RCLONH 92720748205 1 33 7 CHOKE COIL 9720138 1 192 0138 Ub CORE L 92 0131 05 CORE 41 1438 45 iCRYSTAL RESONATOR 45 505MHZ 277 15928 05 CRYSTAL RESUNATSRCI2 8MHZ 0326 05 RESONATOR 4 19MHZ 1 71 0439 05 38 850MHZ 1 71 0409 15 45 05 2 R90 0724 05 MULTI COMP R90 0718 05 MULTI COMP 4 7X4 R90 0719 05 MULTI COMP R90 0718 05 MULTI COMP 4 7 4 RK73FB2A120J CHIP R 12 J 1 10W 2 73681 102 CHIP R 1 0K J 1 16W RK73GB1J103J C
13. Description Desti Re Parts nation marks BB x BY 3 ri 0855 R39 Ink73H81J472J CHIP R 4 7 J 1 16W RK73HB1J334J CHIP H 330K J 1 16 RA1 RK73HB1J122J CHIP R Lek J 1 16 R42 RK73HB1J221J CHIP R 220 J 1 16W R43 RK 73HB1J274J CHIP R 270K J 1 16W R44 RK7 3HB1JS561J CHIP R 560 J 2188 R45 RK73HB1J274J CHIP R 270K J 1 16W 846 47 RK73HB1J561J CHIP R 560 J 1 16W 848 49 RK743HB1J152J ICHIP R 1 5K J 1216W R50 RK73HB1J332J CHIP R 3 3K J 1 16W 851 RK73GB1J332J CHIP R 1 168 52 53 73 1 4702 CHIP 47 J 1 16W R54 RK73HB1 472J CHIP 8 4 7 J 1 16W R55 HK73GB1JA72J CHIP R 4 7 J 1 164 R56 RK73HB1J102J CHIP 21 J 1 16 R57 RK73HB1J472J CHIP R 4 7 J 1 168 R58 RK73HB1J102J CHIP R J 1 16W R59 RK73HB1J103J CHIP R 1 OK J 1 168 R60 RK73HB1J472J GHIP R 4 7K J 1 16W R61 RK73HB1J103J CHIP R 10K J 1 16W R62 RK73HB1J101J CHIP R 100 J 1 16W R63 7472 CHIP 4 7K J 1 1698 R64 RK73H8B1J183J CHIP R 18 J 1 16W 2 R64 HK73HB1J183J CHIP R 18K 1 1689 R65 RK73HB1J122J CHIP R 1 2 7 1 16W R66 67 x RK73HB1J564J CHIP 560 J 1 16W R68 RK 73HB1 3223I CHIP R 29K J 1 16W R69 RK73HB1J103J R 10K J 1 16W R70 IRK73HB1J473J CHIP H 4 7 J 1 16W 871 k NK73HH1J152J CHIP R SK J 1 16W R72 HK 753HB1J101 CHIP 100 1 16W R73 1473 CHIP R AK J 1 16 R74 RK 74HB1J272J CHIP R TIK J
14. roa Ads 1043 9 8219552 10 H3MOd L 182v AWS ZHNSB BE gt gt 216851 lel 1150 Hdwa aa 31 22 solu uc 468 01 2 ee di W3 NO WY AME HOW 1 SWE 135 X Y EHE 56802106 3 vied 918 9 LHJ 5 OSA 6 1199 962 2454 9169 9908282 bi HdW3 30 SY 912 0902 LH 8338 Sou 688 7 3 HN SAN 4001 NAESMPOL n X 1 WIBSCLO1 5 30 NI 0 21 as 9 3 10 03 ohg SWE oe A ASNB Asati ten rL pelo L gu A XL 731 621 821 ew 8 081 01 H3M d Ms INY 1 01 18 dad 1214 4 9 111829 wA 1058 H 21 9 19 22220 81551 055 244 HdWa aud 58 WE AL fi Al me A o ls L v LSX 1121 nan 280 ee ee s I
15. 0700 IGHIP E D C34 CK 23GR1CA7 4K CHIP 0 047UF C35 40 CK 73HRHIEA7IK CHIP 47 0PE K C41 GK 7 4HBIETIQ02K CHIP 1000PF K 42 43 GCK73HBTIEA 71K 44 73081 152 156 45 CRK 3K O03 30k K C46 U97 0U576 05 6 3WV 47 CK 73GB1H152K CHIP 1500PF K C48 CK 7 4GR1C 333K CHIP 0 033UF 49 9 2 1576 115 TANTAL UF 6 3WV CSO 6 GPF C 65 CCF SGCHLHOBUD CETE BPI C52 54 4 4 CHIP K God ICKY SHB lC TUAK 0 01UF K C58 ICK7 43HBIETO0 7K ICHIP 1000PF K C59 th CHIP C 470 C60 92 054 2 05 0 10 20WV C61 GK 7 AHBRIERA 71K CHIP 47 C63 CK S3HBIRA7TK CHIP A 70PE K C64 x 942 0542 059 1 UF 20WV C65 CKZ43GRTC4 73K GHIP 0 047UF C67 73 1 103 CHIP CTCSS UNIT X52 3290 00 TSU 8 TX RX UNIT X57 440X XX 9 A E 1 16W 25 PARTS LIST Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Address New Parts No Description Desti Parts nation tmarks udis 8 12 8 182 C68 7 3 1 471
16. 22 20 72 0572 14 MODEL PLATE BT 9 23 30 B72 0648 04 MODEL NAME PLATE KP 23 3D 872 0649 04 MODEL NAME PLATE MZMS 23 3D B72 0649 04 MODEL NAME PLATE 23 3D B72 0650 04 MODEL NAME PLATE 2 23 3D B72 0651 14 MODEL NAME PLATE 89 24 26 04 0181 05 COAXIAL CABLE RECEPTACLE 25 E19 0254 05 PLUG ACSY M2M3 26 20 23 0944 04 TERMINAL BT 9 M4X 27 20 23 0945 04 TERMINAL BT 9 28 20 23 0946 04 TERMINAL BT 9 MAX 29 2D E23 0947 04 TERMINAL BT 9 M4X 30 20 23 0948 04 TERMINAL 81 93 31 20 524 094 04 TERMINAL 22 2 29 1129 8 INTER CONNECTOR LCD ASSY 33 2A E29 1124 05 INTER CONNECTOR LCD ASSY 34 2D 7 0424 05 LEAD WIRE WITH CONNECTOR 35 1D 1052107 33 SHIELDING COVER P MODULE 20 1110 04 INSULATING SHEETCRF DAUGHTER 22 TH 79 New Parts Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert Ref Description Rd Aa om 2298 37 20 1145 04 INSULATING SHEETCDC IN 38 F20 1155 04 INSULATING SHEET DAUGHTER F20 1159 04 INSULATING SHEET L27 FRAME 39 3D G11 0701 04 SHEET 40 2A 1011 0722 04 SHEET 41 G13 1307 04 CUSHION 42 20 513 1375 04 CUSHION BT 9 43 2A 1613 1467 04 CUSHION LED 44 G13 1469 14 CUSHIGN PANEL 45 IC 1 1613 1474 04 CUSHIGN PANEL 46 3A
17. CHIP A70PF K C69 92 0507 05 4 7UF 6 3WV C70 72 CK73GR1C473K CHIP C 0 047UF K C73 CK73HB1EA471K CHIP C A70PF K C74 092 0507 05 CHIP 4 6 3WV 75 1 73 1 30 CHIP C76 92 0507 05 4 7UF 6 C77 92 0566 05 TANTAL 6 3WV C78 79 7 1 471 CHIP C80 92 0507 05 4 706 6 3WV C81 CK73HB1E102K CHE 1000PF K 082 283 7 1 471 CHIP 470PF K C84 73081 473 CHIP 0 047UF 85 CK73HB1E102K CHIP C 1000 C86 C92 0542 05 CHIP TAN 0 1UF 20WV C87 92 0587 05 TANTAL 2 2U0F 4 C88 CK73HB1C103K CHIP C 0 01UF K C89 90 1 471 CHIP 470 K 91 1 030 CHIP C C92 7 1 103 CHIP 0 01UF K C93 CC73HCH1EA470J CHIP A 7PF C94 CK73HB1C103K CHIP C 0 01UF K C95 CC73HCH1EO050C CHIP C C96 CC73HCH1E030C CHIP C97 CK 7 3HB1E102K CHIP 1000PF K C98 CC73GCH1HO70D CHIP D C99 1 180 J C100 CK 7 3HBIE471K CHIP 4 70PF K C101 1 73 1 50 CHIP C SPE C102 CC73HCH1E030C CHIP C XTMM 1 C102 CHIP M3MAE C102 1 73 1 30 CHIP E2E3E9 C102 X 73 1 050 GHIP SPF KP C103 7 3 1 103 CHIP C 0
18. D 3C 39 2040 45 HEAD MACHINE 508 5 1 N39 2055 46 PAN HEAD MACHINE SCREW PCB F 1 C 79 2040 46 SCREW CRF 23 TH 79 New Parts PARTS LIST Parts without Parts No are not supplied Les articles mentionnes dans Parts No sont pas fournis TH 79 A E Teile ohne Parts No werden nicht geliefert CTCSS UNIT X52 3290 00 TSU 8 Ref No Address New Parts No Description Desti Re Parts nation marks m BB BB JU ft 2B 2005 46 SCREW H 36 80 6 45 SCREW CASE AG 80 2024 45 SCREW CASE SP x TO7 0317 SPEAKER ANT 1790 0483 05 5 28 T91 0504 05 MIC ELEMENT D200 20 3 004 IDI RD BT 9 10101 20 STOCUOM 144MHZ POWER MODULE 10100 2G c 430 440MHZ MODULE 68 ADAPTER 120V ACSY 68 1 ADAPTER 240V tACOY 68 08 44 05 ADAPTER 230 I Ip 68 5 408 0440 ADAPTER 230 ACSY 68 008 0441 05 ADAPTER 120 230V 5 M2M3 69 W09 0825 15 BATTERY ASSY CPB 34 2ACSY M3 69 WU9 0826 05 BATTERY ASSY CPB 232 5 M21 69 09 0826 05 BATTERY 22 PE E2 69 09 0826 05 BATTERY ASSY P8 32 ACSY 9 70 2 N52 32
19. J 1 16 8433 RK73HB1J274J CHIP 270K J 1 16W RA34 436 7 2 9 CHIP 0 39 K 1 4W R437 RK736B1562J CHIP R 5 6K J 1 16W R438 RK73GB1J103J CHIP R 10 J 1 16W R439 RK73GB1J473 CHIP R 47K J 1 16W R440 91237 12K J 1 16W R441 7471 470 J 1 16W R442 445 RK73GB1J121J CHIP R 120 J 1716W R446 RK73HB1J182J CHIP R 1 8K J 1 16W 644 RK73FB2A101J CHIP R 100 J 1 10W R448 RK73HB1J101J CHIP R 100 J 1 16W 449 RK73GB1J472J CHIP R 4 7 J 1 16W 38 New Parts PARTS LIST Parts without Parts No are not supplied Les articles non mentionnes dans Parts ne sont pas fournis Teile ohne Parts No werde n nicht geliefert TX RX UNIT X57 440X XX Ref No Address Parts No Description Parts f S F Eb BSR R450 453 RK73HB1J104J CHIP R 100K J 1 16WM RA54 458 RK73HB1JA72J CHIP R 4 7 J 1 16W 8459 464 RK73HB1J222J CHIP R 2 2K J 1 16W R465 467 RK73HB1J104J R 100 J 1 16W R470 RK73H81J100J CHIP R 10 J 1 16W R471 RK73HB1J222J CHIP R DDK J 1 16W 8501 502 RK73GB1J222J GHIP R 2228 J 1 16W R503 505 RK73HB1J104J CHIP R 100K J 1 16W R506 507 RK73HB1J333J CHIP R 33K J 1 16W R508 RK73GB1J103J CHIP R LOK J 1 16W R509 RK73GB1J223J CHIP R 22K J 1 16W R511 RK73GB1J474J CHIP R 40K J 1 16W R512 RK736GB1J104J CHIP R 100K J 1 16W R513 RK73HB1J223J CHIP R 22K J 1 168 8514 515 RK73HB1J100J CHIP R 10 J 1 164 R516 RK73
20. R351 352 RK73GB1 J473J CHIP R ATK J R353 RK 73HB1J273J CHIP R 27K J R354 RK73HB1J100J CHIP R 10 J R355 RK73HB1JA72J CHIP R 4 7 4 R360 RK73HB1J104J CHIP R 100K J R366 736 1 74721 CHIP 4 7K J R368 R92 2539 05 CHIP R 330K R369 RK73HB1J100J CHIP R 10 J R370 RK73GB1J913J CHIP R 91 2 6371 IRK 3HB1J272J CHIP R 2 7K J R372 3HH1 222 R 2 2K J R373 HK73HB1J332J CHIP R 3 3K JJ R374 RK73HB1J102J CHIP R 1 0K J R375 HK73HB1J224J CHIP R 220K R376 14721 CHIP A K J 8377 HK73HB1J2224J CHIP R 2 2K J R378 HK73HB1J122J CHIP R 1 2K J R379 RK73HB1J182J CHIP R 1 8K 2 R380 RK736B1J1024 CHIP 1 0 R381 382 HK73HB1J683J CHIP R 68K 2 R383 RK753HB1J472J CHIP R 4 7K J 37 9 PARTS LIST Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Ref No Address Parts No Description Desti Re Parts nation marks 80 a 22908 t 8384 172524 CHIP R 3 3k J 1 16W R385 RK73HB1J102J CHIP R 1 0K J 1 16W R386 RK73HB1J272J CHIP R 2 7K J 1 16W 6387 388 RK 73HB1J222J CHIP R 2 2K J 1716W R389 RK73HB1J472J CHIP R 4 K J 1 16W R390 391 HK73HB1J2214J CHIP R 220 J 1 16 R392 393 RK73HB1J154 GHIP R 150 J 1 16W R394 RHK73HB1J102J CHIP
21. 04 TH 79A 4 45 9 PACKING EXCEPT X M4 Type instraction Manual 18 B62 0423 00 TH 79A 2 TH 79E T E E2 ES E9 Carton Board 19 B62 0424 00 TH 79E E E2 50 H13 0951 04 TH T9E E E2 20 1B62 0425 00 TH 79A P M M2 M3 51 13 0952 14 TH 79A TH T9E E3 E9 TH T9E T 21 Instraction Manual 17 Warranty Card B62 0467 00 TH 79A P M M2 M3 B46 0310 03 TH 79E E E2 E3 E9 TH 79E 9 B46 0410 30 TH 79A B46 0422 00 TH 79A 52 Protection Bag H25 0085 04 TH 79A 2 3 59 Hand Strap 2 TH 79E T E E2 E3 E9 J69 0327 04 TH 79A 22 21 pe 58 Hook est 2 3 a 7A J29 0465 04 79 2 3 T E E2 E3 E9 TATIE CTE 2 E3 ES V9 ez 229 49 Packing Fixture H12 1472 03 79 2 3 TH 79E 2 Antenna 90 0483 05 TH 79A 2 TH 79E T E E2 E3 E9 gt Plug E19 0254 05 M M2 M3 4 gt 4 69 Battery 55 be 09 0825 15 TH 79A 09 0826 05 TH 79A M M2 SS TH T9E T EE2 E3 E9 Packing Fixture 47 12 1468 03 79 T 48 12 1471 03 79 K P M M2 M3 TH 79E E E2 E3 E9 47 Packing Fixture H12 1467 03 TH 79A 2 79 2 3 9 68 AC Ad
22. 1 103 10231 THERMISTGR 42 TH 79 EXPLODED VIEW 2 7 09 2238 05 2 5 80 2005 46 CONTROL UNIT X57 440 A 7 700 PTT UNIT VOUENC UNIT X57 440 F 7 57 440 D 7 PS VOL UNIT X57 440 k lt gt 700 CONTROL DAUGHTER UNIT S 5 X57 440 G 7 uu Parts with the exploded numbers larger than 700 are not supplied 43 9 EXPLODED VIEW RE DAUGHTER UNIT X57 440 E 7 2x8 Tap BLK 80 2008 45 09 2240 05 26 6 N30 2606 46 D M2x4 BLK N39 2040 45 M2x5 5 N39 2055 46 F Mex4 N79 2040 46 H 2x24 Tap BLK N80 2024 45 BATTERY CASE BT 9 15 Parts with the exploded numbers larger than 700 are not supplied 44 TH 79 PACKING X M4 Type 51 Carton Board H13 0952 04 TH 79A X n ud Instruction Manual 18 B62 0423 00 79 4 20 862 0425 00 TH 79A 4 21 Instraction Manual B62 0467 00 TH 79A M4 54 Item Carton Case 52 0608 02 TH 79A 4 Battery case BT 9 TH 79A X M4 53 Bag Main unit H25 0103 04 79 4 59 5 J69 0327 04 TH 79A X M4 UPC Card Label 47 Packing Fixture H12 1466 03 TH 79A X M4 ANT Antenna T90 0483 05 TH 79A X M4 58 Hook 329 0465
23. 1 16W R75 3920 CHIP R 3 9K J 1 168 876 77 x MM CHIP H PENA J 1 16W R78 IRK73HB1J101J CHIP R 100 1 16W R79 CHTP R 680 J 1 16W R80 82 IRK73HB1J392 CHIP R 3 9K 17168 R83 je RK SHB 11272 CHIP R J 1 16W 884 RK 7 4HB 1683 CHIP R 68K 1716W R85 86 IRK 7AHB LUI 492 CHIP R 5 9 1 164 R87 S RK SHR 1 104 CHIP 100K 1 164 R88 HK743HB13104J 1 16 R89 RK74HBI J104A J CHIP R 10UK 1716W R90 HK 7 3HH 1 1105 CHIP R IM 1 16W R91 RK 3HB1J473J CHIP AK J 1 16W R92 73 817273 CHIP 8 27K J 1 168 R93 RK73GB1J561J CHIP R 560 J 1 16W R94 6800 CHIP R 68 J 1 16W R95 97 RK73HB1J103J CHIP R 1 16W R98 x RK73HB1J152J CHIP H 5 J 1 16W R99 RK73HB1J332J CHIP 3 J 1 16 8100 RK73HB1J151J CHIP R 150 J 1 16 R101 RK73HB1J223J CHIP R j 1 16W R102 RK73HB1J154J CHIP R 150K J 1 16 34 9 New Parts Parts without Parts are not Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Ref No Address New Parts No Description Re Parts nation Z Bg a 5 8B sn X 7 X R103 RK 3HB1 4 ya H 270K 1 16 R104 7 3 1 961 R 560 17164 R105 1332 R 1 16W R106 Loe 1 1 R 560 1 16W H107 RK73H
24. 16W 143 144 RRE SHB ST BOT R 18 J 1 16W R145 HK73HB1 J1043J H 10K J 1 16W R146 147 RK73HB81J561J R 560 J 1 16W R148 104 R 100K J 1 16W R149 RK73HB1J681J R 680 J 1 16 2 R149 RK73HB1J681J R 680 J 1 7168 M3MAE R149 RK73HB1J6814J R 680 J 1 16W JE2E3E9 R150 RK73HB1J470J R 47 J 1 164 8151 RK 3HB1J391J R 390 J 1 16W R154 RK73HB1J332J R 3 3k J 1 1698 2 R154 RK73HB1J332J R 3 3K J 1 1609 M3M4E TH 79 PARTS LIST Parts without Parts No are not supolled Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Ref No Address Parts No Description Parts ES Im 8 88 R154 RK73HB1J3324J CHIP 3 3K J R155 RK73HB1J222J CHIP R 2 28 J R156 157 RK73HB1J100J CHIP R 10 J R158 RK73HB1J332J CHIP R 3 J R160 RK73HB1J4723 CHIP R 4 7K J R160 RK73HB1J472J CHIP R 4 7K 1 8160 RK73HB1J472J CHIP R 4 7 R162 RK73HB1J221J CHIP R 220 J R163 RK73HB1J472J CHIP R 4 7 J R164 RK73HB1J820J CHIP R 82 R164 RK73HB1J820J CHIP R 82 R164 RK73HB1J820J CHIP R 82 J R165 RK73HB1J270J CHIP R 27 J R166 RK73HB1J224J CHIP R 220K J R167 RK 73HB1J124J CHIP 120K J R168 RK73HB1J102J CHIP R 1 0K J R169 RK73HB1J392J CHIP R 3 9K 169 RK73HB1J392J
25. 36 1 26 L40 6861 36 L26 L40 6861 36 L26 140 6861 36 L27 L34 1373 05 L28 29 L40 1871 36 L30 1 40 2271 36 L31 L40 1871 36 1 52 140 1085 34 L33 I 40 5671 34 534 L40 1271 34 L34 L40 1571 34 L34 140 1571 34 1 34 L40 1571 34 L 35 11 40 2771 40 L36 L34 4359 05 L37 L40 2771 40 L38 L92 0138 05 L 39 11 40 3961 38 L39 1140 3961 38 L 39 LAU 3961 38 L40 L92 0138 05 L41 40 4761 L41 L40 4761 L41 140 4761 36 L42 140 5671 34 43 140 2771 36 1 44 L40 6871 35 LAS 1 45 l 40 1571 34 L45 140 157 34 1 45 4A4U 1571 34 146 L40 1095 34 47 140 1085 34 LAB L40 1871 36 1 50 4 2271 36 L5 1124 1264 05 L52 140 2271 36 53 L 40 6871 34 L54 40 109 5 34 L55 L 46 7 4571 356 L56 140 785 34 H L57 58 L34 1264 05 L59 140 1085 34 L60 2 11 05 L61 11 40 3961 38 L i iL40 3961 38 32 uy TX RX UNIT X57 440X XX Description Z X d C U UU U Desti nation marks 0855 HELICAL BLOCK 435MHZ HELICAL BLQCKCA35MHZO HELICAL BLQCK C435MHZ D HELICAL BLQCKCA44MHZ SMALL SMALL SMALL SMALL SMALL SMALL SMALL SMALL SMALL SMALL SMALL SMALL COIL SMALL CORE SMALL SMALL SMALL CORE SMALL SMALL SMALL SMALL SMALL SMALL MALL MALL MALL MALL VEN MALL SMALL SMALL SMALL WIL r SMALL SMALL SMALI SMALL SMALI SMALL FIXED JNDUCTOR C82NH
26. 3GR16333K CHIP 0 033UF K C369 C92 0564 05 ELECTRO 6 3WV C370 371 CK73HB1EA471K CHIP C 470PF K C372 373 C92 0587 05 TANTAL 2 2UF C374 375 CK73GH1CA73K CHIP 0 047UF K C376 377 2 0 01UF K C378 K73GB1H103K CHIP C 0 01UF K C379 2 EA71K CHIP C 47 380 381 92 0566 05 TANTAL TOUR 6 3WV C382 383 C92 0593 05 ELECTRO 33UF LOWV C384 CK73HB1EA471K CHIP C C385 386 CK 73GR1C473K CHIP C 0 0470 K C387 C92 0567 05 ITANTAL 68UE 6 388 391 CK73HB1EA71K CHIP C 470PF K 6C392 393 73081 471 CHIP 470 C394 395 C92 0576 05 TANTAL 6 3WV C396 400 CK73HB1EA471K CHIP C 470 C401 CC73HCH1E101J CHIP C 100PF J 402 404 CK73HBIEA71K CHI 470PF K C405 CK73GB1HA71K E 470 C407 CK73GBIE22 4K 0 022UF K 0408 92 0594 0 4 UE C409 IC92 056 7 0 TANTA amp 8UE 6 3WV C410 CHIP A7UPF K CA11 415 CK73HB1kA7 K GHIP AOPE K C416 CK TIGB I HAIK CHIP 470 K A UPE K C418 419 ICK73GB1HA71K CHIP 470PF K C420 CHIP 470 C421 CY 565 05 TANTAL 6 BUF C422 423 CHIP 470 424 73 1 103 CHIP Cc 0 01UF K C425 IGK 34 vC ICHIP A7 0PF K New Parts Parts without Parts No are not supplied Les articles mentionnes dans le Parts No sont pas fournis Teil
27. 653 0769 04 PACKING VML ENC 47 E H12 1466 03 PACKING FIXTURE 47 1 12 1467 03 PACKING FIXTURE 47 12 1467 03 PACKING FIXTURE 47 x 12 1467 03 PACKING FIXTURE 47 12 1468 03 PACKING FIXTURE 48 1 12 1471 03 PACKING FIXTURE 48 12 1471 03 PACKING FIXTURE 48 12 1471 03 PACKING FIXTURE AY x 12 1472 03 PACKING FIXTURE AY 1 12 1472 03 PACKING FIXTURE 49 2 1 12 1472 03 PACKING FIXTURE 50 13 0951 04 CARTON BOARD 51 H13 0952 14 CARTON BOARD 52 H25 0085 04 BAG 52 25 0085 04 52 25 0085 04 BAG 53 25 0103 04 BAG 54 H52 0522 02 ITEM CARTON CASE 54 H52 0523 02 ITEM CARTON CASE 54 H52 0524 02 ITEM CARTON CASE 52 0524 02 ITEM CARTON CASE 54 52 0608 02 ITEM CARTON CASE 55 10 J19 1552 03 HOLDER 56 28 1719 41553 13 HOLDER KEY 57 2 1721 4456 04 HARDWARE FIXTURECVQL ENC 58 J29 0465 04 HOOK ACSY 59 J69 0327 04 HAND STRAP ACSY 60 3C J69 0333 05 RING 61 28 x 1482 0030 0 05 PRINTED FLAXIBLE BOARD 62 3A 1 29 4906 04 KNOB V L 63 29 4907 04 KNOB 64 ix K29 4908 04 KNOB VQL PWR 65 1B K29 4909 02 66 18 k 1K29 4910 04 KNOB CLOCK 67 28 K29 4912 03 KNOB KEY TOP 3B 1 09 2238 05 SCREW 2 7 26 1 09 2240 05 SCREW BELT HOOK C 36 N30 2606 46 PAN HEAD MACHINE SCREW CBNC
28. 995MHz Example E T type Fig 1 Frequency configuration method dnd LOCAL 455kHz 1st LOCAL 38 85MHz and LOCAL 22127 Table 1 9 CIRCUIT DESCRIPTION iver signal channel 2 Rece ZN LNY 091 MS INY 820 scq 338 650 021 920 1 7HWSS 8 63 ZHWOSO Sr 91 42 23 b AHN JHN ZHINS0S 5 y gt OSO 201 21 BJ E 860 35011 eee p 288 i L e lt any 000200 249 l Wd 9 MS O 481 3 91851 2080 0 85 79907 puz NI x SLEDI 5550 gt 4ng ___ 10348 XIN ZHHOSY 80 XN ______ i er 39 QIW LOI 42 4338 L C2 ZL osc 250 438 Fig 2 Receiver section configuration 9 CIRCUIT DESCRIPTION UHF reception The 1st LOCAL signal lower hetero made from the direct oscillation of the U VCO s IC9 KCH 1 7 is mixed with the desired signal to become the IFU s 45 05 2 It is further mixed with the 2nd LOCAL signal upper hetero from the X1 s quartz crystal oscillatio
29. C178 C178 C178 C179 New Parts die Pe ot 42 So Parts 5 nl 73 18471 1 1202 GC 3HCHTES690J CK73HBIEA71K CC73HCHIE120J CC 73HCHIEO060D GC 7366HT1HO0300 CK73HB1EA71K CC73HCH1E1000D COMHCHIETOTS CC73HCHIE101J CC73HCHTE101J CUTSHOMTEISO 7 421 o 800 Gor A Le K 7 3HB1E 1 7 101 SET 01 2K 73 1 30 73 1 471 2 9 1 800 K73HBIEA71K 3 20200 B 2 2 Ap E SD CK 3HBIE 102 HH EC LU CK 73HBICTO SK GK73HBI1CIO 3K CC73HCHIEO010C 73HCH1E030C CK 73HB1C103K 71 CK73HBIE102K CK7436B1H102K CU74HCHTEOSBUD UC LSHCH TB S30 GG 73HCHTIES680J 71 GG73MCHTEQ010C Cus 055 CRI SHB LEAT LK CGO 43HCHTEDAOC 2 CC ASHGHIBOUSUL CHIP CHIP CHIP GHIP CHIP CHI CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP CHIP
30. R 1 0K J 1 16W R395 RK73GB1J473J CHIP R ee J 1 16W R396 RK73HB1J222J CHIP R 2 2 J 1 16 R397 73 1 27232 CHIP R 2 7K J 1 16W R398 RK73HB1J473J CHIP R 47 J 17168 R399 HK73HB1J102J CHIP R 1 0 J 1 16W R400 RKTSHBIJ222J CHIP R 2 2K J 1 16W 8401 RK 73HB1J272J CHIP R Zu TK J 1 16W R402 HK73HB1J100J CHIP 10 J 1 16W 8403 R92 0679 05 CHIP R 0 2 R403 R92 0679 09 CHIP R 0 QHM M2M3E R403 92 0679 05 CHIP R 0 QHM 2 9 404 7306 1 7104 CHIP 8 100 J 1 168 R405 HK73HB1J332J CHIP R SN J 1 16 R406 HK73HB1J104J CHIP R 100 J 1 16W R407 RK73GB1J104J CHIP R 100 J 1 16W R408 HK 73HB1J IC ni CHIP H 10 J 1 16 R409 RK73GB1J104 CHIP R 100K J 1 16W R410 411 RK73GB1 680J CHIP R 58 1 16W R413 13681104 CHIP R 100K I 16W 8414 RK 3HB1 103J CHIP R 10K J 17164 R415 HK 736831 J474 470K J 1 16W 416 417 73 81 1104 eae JR 100 4 1 16W R418 RK73FB2A2R2J CHIP R 2 9 J 1 10W RA19 RA 73HB1J182J CHIP 1 8K J 1 16W R420 RK73GBH1J8204J CHIP R H2 J 1 16W RA21 HK756B J680J CHIP R 68 J 1 16W R423 RK73HB1J182J CHIP R 1 8K J 1 16W R424 425 RK73HB1J100J CHIP R 10 16W RA26 HK73HB1J682J CHIP R 6 8K J 1 16W R427 RK736B1J273J CHIP R 27K J 1 15W R428 HK73GB1J102J CHIP K 1 0K J 1216W R429 R T3HB1J222 CHIP R 2 28 J 1 16 R430 CHIP R 4 JK J 1 16W R431 HK73HB1J103J CHIP R 10K J 1 16W R432 HK73HB1 1 CHIP R 4 7
31. case when the two screws fastening the BNC receptacle are removed Pull out the holder and the BATT terminal while being careful not to bend them How to remove the LCD ASSY After separating the A unit from the upper case remove the unit s two solderings The LCD ASSY separates from the A unit when the four claws fastening it are removed 9 A E 9 CIRCUIT DESCRIPTION 1 Frequency configuration The TH 79 AVE has independent PLL circuits for the VHF and The VHF 2nd LOCAL is made by tripling the REF OSC UHF bands It also has two IF channels so both bands can 12 8 2 receive the same time The frequency configuration is as shown in Fig 1 and Table 1 Each band has a sub reception circuit Sub VHF Sub UHF so both VHF and UHF waves can be received V x V U x U simultaneously The Sub VHF 151 1 is made from the halving of UHF VCO The Sub UHF 1st LOCAL is made by doubling the VHF VCO 2 430 0 UHF SUB VHF 439 995MHz 5 05 2 5 430 0 439 995 RF RX Meng pae T 384 95 394 945MHz 455kHz 2 144 0 145 995MHz 2nd LOCAL 25 45 505MHz 189 05 191 045MHz ba 144 0 ex gt 5 450kHz 2nd LOCAL 38 4MHz 430 0 439 995MHz UHF PLL IC REF OSC 12 8 VHF PLL IC 144 0 145
32. if both the operated and non operated bands are busy at the same time one band cannot be checked MIG AMP gt 10308 AUDIO OUTPUT to SP TSU 8 CTCSS UNIT Fig 14 Auxiliary circuit wiring diagram DTMF CTCSS BEEP TONE AUDIO INPUT 9 DESCRIPTION OF COMPONENTS FM AM IC VHF 2nd mixer quadlatcher wave detect AF output noise amplifier output S meter output FMIC UHF 2nd mixer quadlatcher wave detect AF output noise amplifier output S meter output Shift register Reception power supply regulation PLLIC ICS PLLIC UH VH IC11 Inverter PLL reference transmission circuit 12 VHF AF output FM AM switch IC301 Input voltage 3 5V approximately double output C302 C303 IC304 Refer to the I O port specification chart 506 506 6307 NT IC308 Limiter amplifier active LPF F F microprocessor power supply IC309 4 0V regulator For LCD illumination IC310 2 3V detector RST IC312 Refer to the audio circuit explanation on page 6 IC313 Multiplexer X Band input changeover 314 Shift register Audio AVR switch audio mute SW APC power switching TX BUSY LED switch shift SW IC315 Audio amplifier For internal Speaker IC316 Audio amplifier For external Speaker IC317 APC differential DC amplifier IC318 Inverter Prevents instantaneous LEO illumination when turning on power supply Fo
33. 104 ICGC7SHGHTET20J CHIP 12 J C105 CK73HB1C103K CHIP C 106 1 010 1 C107 CK73HB1E471K CHIP 4 108 73 1 1014 CHIP 1 J C109 1 109 CHIP 1000PF K C110 7 1 1013 CHIP 111 CK73HB1EA71K CHIP 4270 C113 114 CK73HB1E102K CHIP 1000 K C115 CK73HBIE471K CHIP C 4 70PF K C116 CC73GCH1H070D CHIP C 0 117 119 CK73HB1E102K CHIP 1000PF K C120 CK73HB1EA471K CHIP C A70PF K 2 C120 CK73HB1E471K CHIP C M3M4E 120 CK 3HBIE471K CHIP 47 K 2 9 C121 CK73FBIETOAK CHIP C 0 10UF K C122 CC73HCH1E680J CHIP 4 C123 CK73GB1H102K CHIP K C124 CK 7 3HB1TE102K CHIP C 1000PF K C125 CC73GCH1H220J CHIP C 22PF J C126 CK 7 3HB1E102K CHIP 1000 26 5 PARTS LIST Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No sont pas fournis ohne Parts No werden nicht geliefert Ref No Address iH C127 C128 21 29 6130 131 51549 C134 C135 C136 C137 6138 C138 C138 C139 C140 C141 C142 C143 C143 C143 C144 C146 C147 C148 C149 C150 0151 C151 0151 C152 C153 C154 C154 C154 C155 C157 C158 C159 C160 C161 C162 C163 C165 C168 169 170 171 C172 21 43 C174 C175 C176 21 77
34. 144 430 440 MHz FM DUAL BANDER TH 79 A E SEHVICE MANUAL Antenna 90 0483 05 Knob VOL PWR K29 4908 04 Knob ENC K29 4907 04 Knobiv OL K29 4906 04 KnobiPTT etc Li 29 4909 02 INE Front glass 810 1214 24 CapiMIC SP iBOS 0342 03 KnobiLOCK K20 4910 04 amp nobKEY K29 48012 03 Plastic cabinet assy AD2 1806 03 402 1807 03 2 3 4 02 1844 03 T E E2 ES E9 Photo is TH 79A KENWOOD 1994 6 PRINTED IN JAPAN B51 8273 00 B 1401 CONTENTS DISASSEMBLY FOR REPAIR 2 CIRCUIT DESCRIPTION Eme d DESCRIPTION OF COMPONENTS enserra 15 SEMICONDUCTOR 18 PARTS LIST 22 EXPLODED VIEW 43 45 ADJUSTMENT n 47 TERMINAL FUNCTION eren 53 WIRING DIAGRAM n M PC BOARD VIEWS TX RX UNIT X57 440X XX G 7 57 TX RX UNIT X57 440X XX D 7 57 TX RX UNIT X57 440X XX E T 59 TX RX UNIT X57 440X XXJ F 7 60 TX RX UNIT X57 440X XX G 7 2222 32 28 TX RX 57
35. 3 304 F20 1154 04 INSULATING SHEETCENC VOL Al 1002 0759 EARTH SPRING CRE A3 1013 14656 04 CUSHIGN 12 8MHZ X TAL 5 G11 0682 04 SEAL D 6 611 0732 04 SHEET 1631 4302 GUZ7 0762 14 EARTH SPRING 6 7 17 305 Ae 12401904 CD1 L79 1113 05 EILTERCASOKHZO CD2 1 19 toes En oa CF1 L72 0902 05 CERAMIC FILTERCASOKHZ CF2 172 ere 05 CERAMIC FILTERC455KHZ L 1 1 42 0137 15 L3 10 1592 U0138 05 CORE L11 1 40 1095 34 SMALL INDUCTQRCIUH L12 40 17281 34 SMALL FIXED INDUCTGRCI20NH 13 L40 5681 47 SMALL 1 NDUCTQRCO S6UH 114 E 40 1091 37 SMALL INDUCTSRCOTUH L195 40 56 1 427 SMALL FIXED INDUCTQR CO S6UH L16 L40 1871 36 SMALL FIXED INDUCTSRCTIBNH L17 x 140 1271 36 SMALL FIXED INDUCTSRCI2NH L18 L 4U 1871 36 SMALL FIXED INDUCTOR 18NH L19 COIL TH 79 A E PARTS LIST TX RX UNIT X57 440X XX 31 9 New Parts Parts without Parts No are not supplied PARTS LIST Les articles non mentionnes dans Parts No ne sont pas fourris Teile ohne Parts No werden nicht geliefert Ref No Address New Parts No Parts SMBS f 20 L79 1108 05 L20 L79 1108 05 L20 L79 1108 05 1 20 k L79 1109 05 L21 L40 8271 35 L22 L4U 1871 36 L23 L40 3985 34 L24 40 1271 35 1 25 40 27271
36. 42 CK 3HBIEA71K CHIP A 0PF K C242 CHIP 4 0PF K 0242 CHIP ATOPE K 6243 CK73HBIEAV1K CHIP 470 C244 CHIP 100 K 2245 123 2231 4 5192 CHIP A70PF K C246 CK SHBTETUZK doma B QOOP K 247 s 4K CHIP 0 01Ul K C250 SX C42 06027 16 TANTAL 106 0251 GC723HGHIEO08UD CHIP C301 302 692 0565 05 6 8UF LOWY C303 092 0587 05 2 QUE AWV C304 ICK 7 3HB1ET02K CHIP 1000PF K C305 CK73HB1C1IO03K CHIP C 0 010 C306 CK73GB1H103K CHIP C 0 307 ik ICGVSHCHTE390J CHIP 39PE J C308 CKI3HBICTU3K CHIP 0 01UF K C309 311 CK 3HB1EA471K CHIP ATOPE K C312 92 00092 05 09 22UF 35WV 313 COTBHCHIE39US ICHIP 39pF 2 C314 GC73HCH1ETU1J CHIP 100PF J C315 2 CHIP Q 01UF K C316 CK73GB1E223K CHIP C U 022UF C317 C92 0587 05 24 AWV C318 CK73HB1C103K CHIP C 0 C319 7 471 CHIP 470 C320 92 0587 05 TAN FAL 2 2UF AWV C321 324 CK73HB1E471K CHIP C A70PF K C325 90 4017 0 A70UF 4WV C326 1 73 1 182 CHIP C 18 427 GC736G6CH1H151J CHIP C 150 J 0328 CK7 4GB1HA71K CHIP C 470 K 329 C92 0587 05 TANTAL 2 2UF AWV C330 CK73GB1H103K ICHIP C 0 01UF K 331 K73HB1EA71K CHIP K 6332 92 0507 05 CHIP 4 6 3WV C333
37. 440 e 63 TX RX 57 440 7 om 67 SCHEMATIC DIAGRAM BLOCK DIAGRAM ES 81 CTCSS UNIT X52 3290 00 TSU 8 83 SC 41 42 43 SOFT CASE 82 BT 9 BATTERY CASE ennt dass NJ SPECIFICATIONS BACK COVER 9 DISASSEMBLY FOR REPAIR How to remove the printed circuit board 1 Open the case After removing the case fastener screw open the upper and lower halves of the case e When you pull out flat cable and pin connector the main unit separates into two parts A 2 Remove the holder e Place the edge of a flat screwdriver against the holder and re move it by prying upward 0 3 How to remove the A unit e After pulling out the dial remove panel Don t break the tabs at both ends e Remove the cap and LOCK key e From the arrow sections float the unit and separate it from the case 4 DISASSEMBLY FOR REPAIR How to remove the shield cover and the B unit Remove the rubber ring and the panel Cut the cushion waterproof sheet with a cutter The shield cover comes apart when the five screws and the three solderings See arrows are removed Remove the one soldering holding the ANT terminal The B unit separates from the lower
38. 45 U S A KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrucker Str 15 6056 Heusenstamm Germany KENWOOD ELECTRONICS BENELUX Mechelsesteenweg 418 B 1930 Zaventem Belgium TRIO KENWOOD FRANCE S A 13 Boulevard Ney 75018 Paris France TRIO KENWOOD U K LIMITED KENWOOD House Dwight Road Watford Herts WD1 8EB United Kingdom KENWOOD ELECTRONICS NEDERLAND B V Amsterdamseweg 35 1422 AC Uithoorn The Netherlands KENWOOD ELECTRONICS ITALIA S p A Via G Sirtori 7 9 20129 Milano Italy KENWOOD ESPANA S A Bolivia 239 08020 Barcelona Spain KENWOOD ELECTRONICS AUSTRALIA PTY LTD A C N 001 499 074 Box 504 8 Figtree Drive Australia Centre Homebush N S W 2140 Australia KENWOOD amp LEE ELECTRONICS LTD Unit 3712 3724 Level 37 Tower one Metroplaza 223 Hing Fong Road Kwai Fong N T Hong Kong KENWOOD ELECTRONICS CANADA INC 6070 Kestrel Road Mississauga Ontario Canada L5T 158 and PB 32 included
39. 6 CG73HCHIET100D CHIP C 10PF D C187 CK73HB1EA71K CHIP C 470 188 73 1 40 APE C C188 CC73HCH1EO040C CHIP C APF C C188 1 040 CHIP C189 73 1 2203 CHIP C 22PF J C190 CK73GR1C473K CHIP 0 047UF K C191 CC73HCH1EQ030C CHIP C 3PF C C192 1 73 1 703 CHIP d C193 CK 7536G6B1H103K CHIP 0 01UF K C194 CHIP C 470 C195 HIP C 0 01UF K C196 ICK 7 SHH 121 02K ICHIP QQOPF K 6197 1 1012 CHAP ie C198 CK73HBIE102K CHIP C 1000 C199 10 73 1 47032 CHIP 200 CK73HBIETO 2K CHIP C 1000PF K C201 1 0700 CHIP 0 C202 E CC73HCHIE100D CHIP C D C203 CC73HCHIE120J CHIP E 204 73 1 800 8 D C205 MICOGTSHORHTES30J CHIP C J C206 x JCCVSHCHIEUBUD CHIP C D C208 ICK73HBTETO02K CHIP C 1000 209 CC736CHTHO30C ICHTP C SpE C C210 CC73GCH1H020C ICHIP 2 0PF 211 CK73HB1EA 71K CHIP C 470 212 CC73HCH1EO030C CHIP 0213 214 GK73HB1E102K CHIP C 1000PF K C215 1 73 1 12032 CHIP 12PF C216 CC73HCH1E030C CHIP C 3PF C217 CC73GCH1HO020C CHIP C 2 0PF C C218 GC73GCHT1HO0AQ0C CHIP C C221 x CC73HCH1E070D CHIP DPF D C222 5 CHIP SPE C XTMM2 5229
40. 90 00 CTCSS UNIT SPTIGN TSU 8 KP 700 z 57 4400 11 TX RX UNIT 7 6 7 KP 700 57 4400 21 TX RX UNIT A 7 G 77 M 700 gt x 57 4400 22 TX RX M2M3M4 700 57 4400 71 TX RX UNIT 42772 700 X57 4402 71 TX RX UNIT 7 6 7 700 57 4402 72 TX RX UNIT A 7 6 7 E2 700 57 4402 73 TX RX UNIT A 7 G 7 9 sss UNIT X52 3290 00 8 UF K KP CK73HB1 102X C 1 000 K KP GC TSHOHTE220J CHIP 22PF J KP Ch SHB LC LUSK CHIP 1 1057 IJCHIP 2 925050 03 CHIP 4 7UF 6 3WV KP GC T3HCHTETOTJ CHIP 100PF J KP 73 1 104 CHIP 6 0 10UF K KP CK73HB1 amp 102K CHIP 1000PF K KP CK73GR1CA473K CHIP 0 04 UF K KP 5 CRYSTAL RESONATOR 3 6864MHZ KP RK 73HB1J563J 8 56K J 1 16W HK73HB1J473J CHIP R 47 J 1 16W 73 811224 CHIP R 220 J 1 16 HK 7 53HB1J1014 CHIP R 100 J 1716W HK73HB1J105J CHIP R 1M J 1 1609 RK73HB1J274J CHIP R 270K J 1 16W RK73HB1J101J CHIP R 100 J 1 16W HK73HB1J562J CHIP h J 1 16 RK 73HB1J333J CHIP R 33K J 1 16W RK73HB1J123J CHIP R 12K J 1 16W RK 73HB1J104J CHIP R 100K J 1 16W RK 3HB1J8224J CHIP R 8 2K J 1 16W RK 3HBI 682 CHIP 6 8K J 1 16W 24 x New Parts PARTS LIST Parts with
41. B 30 32 M SIZE With PB 31 BT 9 SC 43 EXTERNAL VIEW L SIZE With PB 33 34 ee eee AAA a ee UD ee s m ee ee ee UD r ee di ee BT 9 EXTERNAL VIEW 83 9 SPECIFICATIONS Genera 144 MHz Band 430 440 MHz Band Frequency range 22 22 U S A Canada 144 148 144 148 438 450 MHz 438 450 Europe 144 146 MHz 144 146 MHz 430 440 MHz 430 440 MHz General market ________ 144 148 MHz 144 148 MHz 430 440 MHz 430 440 MHz _ Mode 2 u F3E FM Usable temparature range 209 60 4 to 140 F _ Grounding m Negative ground u 7 3 Dimensions WxHxD x 56 mm x 129 5 mm x 24 5 2 20 in x 5 10 in x 0 965 in Dimensions projections included 63 5 mm x 144 0 mm x 31 0 mm 2 50in x 5 67 in x 1220 Weight 1 mu 2 _ Approx 325 9 11502 Microphone impedance 22525 PEN e KO Antenna impedance 2 22 2 DE ns Supply voltage External power DC jack 95V 16 0 13 8 Battery terminals 22 4 5 V 15 0 V 6 0 RX signal dual band 80 2 RX signal single band _ 45 20 TX 13 8 V DC jack 1 3 App
42. B1JA72J R 4 7 1 16W 108 HK73HB1J561J R 560 J 1 16W R109 13921 R 3 9K J 1 16W R110 HK73HB1 1822J 8 2 J 1 16W R111 RK73HB1J222J R 2 2K J 1 16W R112 HK73HB1J680J R 68 J 1 16W R113 7472 R 4 7K J 1 1609 114 HK73HB13J123J 12K J 1 16W R115 x IRK73HB1J272J R 2 7K J 1 16W R116 RK73HB1J392J R 3 9K J 1 16W R117 HK73HB1J220J R 22 J 171640 R118 HK73HB1J680J R 68 J 1 16W R119 RK73HB1JA71J R 470 J 1 16W R120 RK73HB1J104J R 100K J 1 16W R121 HK73HB1J220J R 22 J 1 16W R122 RK73HB1J472J R 4 7 J 1 16W R123 HK73HBH1J561J R 560 J 1 16 R124 RK73HB1J104J R 100K J 1 16W R125 RK73HB1J272J R 2I J 1 16W XTMM2 R125 RK73HB1J272J R 2 IK J 1 16W M3MAE R125 IRK73HB1J272J R 227K J 1 16W E2E3E9 R126 RK73HB1J151J R 150 J 1 16W R127 RK73HB1J182J R 1 8K J 1 16W R128 RK73HB1J680J R 68 J 1 16W R129 RK73HB1J102J R LK J 1 16W R130 RK73HB1J391J R 390 J 1 16W R131 127275 R 22 TK J 1 16W R132 RK 3HB1J680J R 68 J 1 158 R133 R 2 7K J 1 16W R134 135 RK73HB1J101J H 100 J 1 16W XTMM2 R134 135 RK73HB1J101J H 100 J 1 16W M3M4E R134 135 RK 3HB1J1013J R 100 J 1 16W 2 9 R135 HK73HB1J101J H 100 J 1 16W R136 RK73HB1J220J H 22 J 1 1698 R137 RK73HB1J270J R 27 J 1 16W R138 RK73HB1J391J R 390 J 1 16W R139 HK73HB1J102J R 1 0 J 1 16W 140 RK73HB1J270J R 27 J 1 16 R141 RK73HB1J392J R 3 9K J 1 16 R142 RAZ Soe 1156 141 R 960 J 1
43. C 10314 BU2090F5 IC IC315 316 NJM2070M ICCAF 10317 LM301AD 10318 TCTSUCG4FU IC 81 2501483 TRANSISTOR 93 x JUPAS 7ST FET 94 25 4619 TRANSISTOR Q5 UMAY TRANSISTOR 96 7 8 3 x New Parts Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert PARTS LIST Ref No Address New Parts No Parts FRES fi 8 d 98 9 25 4619 810 11 25CA738CGR 812 JUPA573T 014 25046197 8 916 25046178 917 18 254 41832 68 919 20 25C4738 GR 921 2535066 9 022 25 4726 9 923 UPAS72T 924 25050660 925 25 1824 926 25C5066 Q 927 25C4726 P 9 928 25C4226 R24 929 25 4083 930 25C5066 0 930 221 25C5066 0 030 31 25050660 830 31 25 5066 0 932 25C4738 GR 033 34 2563356 935 2504726 9 936 25512156 937 38 25 5066 0 037 38 25050660 937 38 25050660 938 25 5066 6 939 35 274 940 25 1824 941 25C5066 0 941 25050666 941 25C5066 Q 949 25 1215 943 25 5066 0 944 25 04726 9 9301 UPA572T 9302 25 1588 9303 UMCS 9305 UPA572T 0306 307 DTB113ZK 9308 UMW1 9309 12581188 8 8 9310 25461768 9311 258118225 9 9312 UMWI 03135 3514 DTC1AAEE 0315 316 25 34617 9317 318 2SK1824 9319 UPA573T 9320 572 0521 322 251243 9323 UPAS572T Q324 UPA573T g325 326 251243 TRANSIST
44. CHIP R 3 9K J R169 RK73HB1J392J CHIP R 3 9K J R170 RK73HB1J561J CHIP R 560 2 R171 RK73GB1J680J CHIP R 68 R172 IRK73HB1J270J 8 27 R173 IRK73HB1J392 CHIP R 3 9K R174 RK73HB1J101J CHIP 100 8175 RK73HB1J683J CHIP 68K 2 R175 RK73HB1J683J ICHIP R 68K R175 RK73H81J683J CHIP 68K Jo X4 2 9 R176 177 RK73HB1J101J CHIP R 100 R179 IRK73HB1J152J CHIP 8 o 8180 RK73GB1J680J CHIP R 68 J R182 RK73HB1J222J CHIP R 2 2K R183 RK73HB1473 J R 4 7K J R184 k 75 1 11241 CHIP R 20K R185 0 IRK73HB1J227 CHIP R PDK R186 RK SHB 1912 GHTP a 120 R187 4320 CHIP R R188 RK3HB113914 CHIP R 390 1 R188 RK 3HB1J391J CHIP R 390 J R188 3912 CHIP R 390 J R189 RK 743HB1J182J CHIP R 1 8 J R189 RK73HBH 1182 CHIP R 7 R189 HK743HB1J182J ICHIP R 190 191 73 1 2207 CHIP R 22 1 R192 RK 4 1 71024 CHIP R 1 OK R193 R9 1468 05 iCHTP h GHM R194 H97 0670 05 ICHIP R 0 GHM R195 RK73HB1J473J CHIP R 47K J R196 RK73HB1J103J CHIP R 10K di R198 RK73HB1J221J CHIP R 220 2 8200 RK73HB1J223J CHIP R 22K J R301 RK73HB1J101J CHIP R 100 J R302 303 RK73HB1J104J CHIP R 100K J R304 RK73GB1J103J CHIP R 10K 2 R305 HK73HB1J222J CHIP R 2 2K d R306 RK73HB1J102J CHIP R 1 0K J 36 9 e PARTS LIST Parts without Parts No are not supptied Les articles non mentionnes dans le Parts No re sont pas fourn
45. DC to 30MHz 2 Provides highly accurate measurements for 5 to 25MHz 9 AF Voltmeter AF V M 1 Measurable frequency 50Hz to 1MHz 2 Maximum sensitivity 1 mV or more Service jig for adjustment Connector PC board E29 1138 05 10 Spectrum Analyzer 1 Measuring range DC to 1GHz or more 11 Standard Signal Generator SSG 1 Maximum frequency 500MHz or more 2 Output 0 05yuV 133dBm 0 1V 7dBm 3 Output impedance 500 12 Tracking Generator 1 Center frequency 50kHz to 200MHz 2 Frequency deviation 35MHz 3 Output voltage 100mV or more 13 Dummy Load 1 80 or more Preparation e Setthe unitin the receiving mode and controls as follows unless otherwise specified NAGA GAT Sis mre te cet n MIN KOS S Yapakuna au HI Use a non conductive rod such as a Bakelite rod for adjustment especially of trimmers and coils To protect the SSG do not send out signals while adjusting the receiving unit The indicted SSG output levels are for maximum output And whenever there is no modulation designation standard modulation MOD 1kHz DEV 3kHz is indi cated How to use the jig Control daughter unit 4 TX RX G 7 Note Connect with the connector PC board inserted as shown in the figure 47 9 ADJUSTMENT How to use the Set Mode About the Set
46. GB1J553J CHIP R 56 J 1 16W R517 518 RK73HB1J103J CHIP R 10K J 1 164 R519 522 RK73HB1J222J CHIP R 2 2K J 1 16W R524 IRK7 3HB1 1222 CHIP R 2 2K J 1 168 R525 IRK73GB1J474J CHIP R 470 J 1 16W R526 527 HK 3GB1J102J R 1 0K J 1 16W R528 533 RK 3HB1J104J CHIP 100K J 1 16W R534 2 683 CHIP 68K J 1 16W VR301 302 R12 6717 05 TRIM 47 VR303 R12 6713 05 TRIMMING POT 10K VR304 305 812 6705 05 TRIM 470 VR306 307 812 6701 05 TRIMMING POT 100 VR308 05 3469 05 POTENTIOMETER 10K AF VOL A PS VR309 R39 0601 05 POTENTIOMETER 10K AF VGL B ENC 5303 540 11127 05 TACT SWITCH 5304 562 0421 05 ISLIDE SWITCH 5305 306 ix 570 0438 05 TACT SWITCH 01 DA221 01980 02 SEPB 72VL 01980 03 4 742 DIORD 05 8 25111 DIORD 09 12 77 01980 013 MA368 DIGRD D15 DA204U DIGRD D16 MAD 01880 016 MATT DIGRD 016 DIGRD D17 DAN22 DIGRD D18 MA368 DIGRD 019 MAT DIGRD 020 HZU2 0 DIGRD D21 MA77 IDISRD D22 MA368 DIGRD D23 25 DIGRD 026 27 809 LD LORD 028 30 031 USS 412 101980 032 DAN 22 01880 033 34 RAO 0 FORD TH 79 A E 39 9 40 x New Parts Parts without Parts No are not supplied Les articies non mentionnes dans Parts No ne sont pas fournis Teile ohne Parts No werden nicht gellefert TX RX
47. GR TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR FET TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR FET DIGITAL TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR DIGITAL TRANSISTOR TRANSISTOR FET FET FET IET PET EET TX RX UNIT X57 440X XX Re nation 5 E2E3E9 2 M3M4E 2 9 2 M3M4E 2 9 MEM TH 9 A E 41 9 PARTS LIST Parts without Parts No are not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Address New Parts No Description Parts f dg Z HM 0327 DIGITAL TRANSISTOR 9328 25 879 FET 9329 330 25CA461 7CR TRANSISTOR 9331 332 12581188 6 TRANSISTOR 9333 334 DTALA4WE DIGITAL TRANSISTOR 9335 257204 9336 25KB79CY FET 0337 572 9338 25C4738 GR TRANSISTOR 9339 25 1588 FET 9340 25 1824 1 10354720 THERMISTOR TH301 302 TN103S472JT THERMISTOR 303 304
48. HIP R 10K J 1 164 RK73HB1J103J CHIP R 10K J 1 16 RK73HB1J152J CHIP R 1 5K J 1 16W RK73HB1J473J CHIP R 47K J 1 16W 73 1 722217 CHIP R 2 2K J 1 168 RK73HB1J272J CHIP QUK J 1 16W RK73HB1 472 CHIP R 4 7 J 1 16W RK73GB1J102J CHIP R J 1 16W RK73HB1J103J CHIP R 1 OK J 1 16W RK73HB1J470J CHIP R 47 J 1 1698 RK73HB1J334J CHIP 330K J 1 16W RK73HB1J103J CHIP R LOK J 1 16W RK73HB1J222J CHIP R 2 2K J 1 16W HK73HB1J102J CHIP R OK J 1 16W 1 4721 R 4 7 J 1 16W RK 3HB1J104 J CHIP R 100 J 1 168 73 11182 CHIP R 1 8K J 1 16W RK 743HH1J562 R 5 6K J 1 16 1 1103 ICHTE 10 J 1 16W 823 CHIP R E J 1 16W x RK7 3HB1J152J CHIP 25 J 1 168 RK73HB1J154J CHIP R 5 J 1 16W RK73HB1J681J CHIP R 680 J 1 16W RK73HBH1J152J CHIP R 1 5K J 1 16W HK 73HB1JIS54 CHIP H 50K J 1 16 RK 3HB1J103J CHIP R 10K J 1 16W 3 473 CHIP R 47 J 1 16W RK73HB1JA72J CHIP 4 7 J 1 16W 3340 CHIP R 330K J 1 16W 2 9 2 M3MAE 33 9 x New Parts Parts without Parts No are not supplied Les articles non mentionnes dans Parts No sont pas fournis Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Ref No Address New Parts
49. Mode When this unit is placed in the Set Mode the following levels can be set 1 Each band s squelch critical point 2 Each band s S meter first group illumination 3 Each band s S meter total illumination 4 Excessive voltage warning reference voltage 13 8V Levels set in the Set Mode are written to the As a result the written data is preserved even if the power supply is cut off or the unit is reset Also if the E7PROM is replaced all items need to be rewritten reset Setting procedures 1 Setthe dual band mode for use key 2 Open the main unit With the power on momentarily short the TX RX unit A 7 part surface test point TB 1 and TB 2 with tweezers equipment eThe LCD s non actuated band side displays Set Mode indicating that the Set Mode has been entered functions during Set Mode are as follows 1 D Squelch critical point WO OOC setting C2 S meter first group illumination level setting Coy S meter total illumination level setting C4 Excessive voltage warning reference voltage 13 8V recognition setting 5 D Excessive voltage warning recognition mode warning sounds C6 Cancellation of turning the power offis also possible VxV UxU changeover 430 800 or 144 300 s changeover SHIFT CDUAL 300 s AM FM changeover During Set Mode the F MENU SQL REV 0 and 9 keys do not receive Example E T type 3 Input each band
50. R305 Hi power and R421 as well as the detec tion voltage generated by R434 R435 and R436 in proportion to the power module s drain current The output of IC31 7 No pin outputs voltage in proportion to the difference between the refer ence voltage and the detection voltage which is inverted at 0335 giving the voltage This voltage regulates the power module s power regulation terminal maintaining a con stant transmission output Also when the transmission is turned off Q324 turns off and Q305 turns on rapidly discharging the APC voltage for stable turning off of the power module Trans mission output switching is regulated by Q320 shift register varying the reference voltage to fix the transmission output at ap proximately 4 7W Hi approximately 0 5W Low and mately 30mW EL 3 4 Temperature protection circuit To prevent thermal destruction of the power module if the thermistor detects a temperature level of approximately 100 C Q32 is turned on and APC voltage is lowered to the level of the D20 zener diode voltage 9 CIRCUIT DESCRIPTION R434 VR307 Q319 WO C Q pm dS ELS Q320 di R420 VR305 R421 Q 0323 9 nO aO O Q LOW EL 7 3TU POWER MODULE DRIVE AMP 2 gt 10 4 APC Temperature protection circuit the case UHF 4 PLL circuit The VHF and UHF bands each have indepen
51. UNIT X57 440X XX Ref No Address New Parts No Description Desti Parts nation marks i 29 035 DISRD D301 MA728 DIGRD 0302 25111 0 1980 2 0302 25111 0302 305 25111 DIGRD KP 0302 303 25111 01980 2 3 304 306 25111 01980 0304 307 25111 01080 22 0304 308 25111 010980 9 0305 2307 25111 DIGRD 2 3 4 0305 308 25111 0180 0307 308 25111 iDIQRD KP 0309 310 04227 DIQRD D315 25111 DIGRD D316 DISRD 0317 25111 DIORD D318 062 iDIORD 0319 320 H30 2131 05 LED D321 25111 0322 323 0324 DANY 22 JI MRD 0325 728 JIRU 10930 oe MG S43 77V FG C3 rx 2090 5 D ICA 5 MB1511PFV G BND FREQUENCY SYNTHESIZER IC6 MC12083D 1 1 9 x KCH17 HICCUHF VCO IC10 KCH165 HTCCVHE VEN 1011 x ITC7SUOAFU IC IC12 TCAWS3EU IG 16301 TC7660MEGA TG 10302 924 16 105192 5 JIC 10303 5 81335 6 1 IC 304 1780560 016 389 IC CPUD 2 10304 1780560 016 389 1 M3M4E IC304 x 78056GC 016 3BS9 IC CPUD 2 9 10304 78056GC 017 3B9 1 10305 x 73881 1 10306 5 81235 1 12307 9 80730SL AT IC IC308 TA75W558FU TE 309 5 81340HG KJ 1 12310 PST9123NH 16312 xk 121421 IC IC313 TCAWS3FU I
52. ______ __________ UHF 013 Band shift switch VHF 018 VHE D20 Temperature protection circuit UHF only D32 033 PLL leakage current prevention VHF D34 PLL leakage current prevention D RF switch D301 Startup diode D302 Backflow prevention destination D303 Backflow prevention destination D304 Backflow prevention destination D305 Backflow prevention destination D306 Backflow prevention destination D307 Backflow prevention destination D308 Backflow prevention destinatio D309 Backflow prevention destination D310 Backflow prevention destination D315 Rapid discharge D316 Fixed voltage circuit D317 Rapid discharge D318 Power module protection diode D319 LED D320 D321 D322 D323 D324 D325 Power supply switch VHF Sub UHF 02 Rag CE 526 JHF 528 05 ver Powesupiyswigh eakage current prevention PCL leakage current prevention PFs oo m gt w wr Backflow prevention onstant voltage circuit onstant voltage circuit APC switch Waveform shaping Internal AF AMP AVR External AF AMP AVR TH 79 SEMICONDUCTOR DATA Microcomputer 78056GC 016 3B9 IC304 78056GC 017 3B9 IC304 connections 1 101 100 Ow xt CO 22922 5 14442 lt lt lt lt lt
53. and 1 External power supply connection resetting DC IN terminal voltage 6V LCD total illumination display Initial value setting display after all resetting 2 Total illumination display confir mation Turn the power switch on while pressing the F key 3 All resetting and initial value set ting Press the F key once again within 10 seconas after total illumina tion Example T Type TP TX RX L19 Adjust to the maximum Refer to Fig 1 ANT B 7 L36 level with the two markers within 208 After confirming the 4088 or more 455 227 145 mE VHF receiver section 1 Helical BPF 1 Trajene output 45dBm Center 146 Span gt Ref 204 Trajene TX RX spectrum analyzer 1 Frequency 145 050MHz 2 Large input S N 146 050MHz K P X M SSG ANT S N confirm the audio 1 3V or more SSG 73dBm EXT SP output AF VH MAX 5OpV Oscilloscope 3 Sensitivity 1 Frequency 145 050MHz E T AFVM 146 050 2 Distortion Confirmation 1288 SINAD or more SSG 122dBm factor 0 185 meter 2 Frequency 144 050MHz 3 Frequency 145 950MHz E T 147 950MHz K P X M 4 Frequency 128 025MHz K P SSG 113 0 5uV AM MOD 1kHz 60 1 Frequency 145 950MHz E T 147 950MHz K P X M S N 10dB or more SSG LCD 1 group or more ill
54. apter W08 0437 05 120V TH 79A W08 0438 05 240V TH 79E W08 0440 05 230V TH 79E E E2 ES E9 08 0441 05 120V 230V TH 79A 2 3 UPC Card Label 16 Label HYATT B42 5526 04 TH 79A K 54 tem Carton Case H52 0522 02 TH 79A K P H52 0523 02 TH 79A 2 3 H52 0524 02 2 9 46 79 A E ADJUSTMENT Required test equipment 1 Stabilized Power Supply 1 The supply voltage can be changed between 5V and 18V and the current is 3A or more 2 The standard voltage is 13 8V 2 DC Ammeter 1 Class 1 ammeter 17 ranges and other features 2 The full scale can be set to either 300mA or 3 cable of less internal loss must be used 3 Frequency Counter f counter 1 Frequencies of up to 1GHz or so can be measured 2 The sensitivity can be changed to 250MHz below and measurements are highly stable and accurate 0 2 so 4 Power Meter 1 Measurable frequency Up to 500MHz 2 Impedance 50Q unbalanced 3 Measuring range Full scale of 10W or so 4 A standard cable 5D2W 1m must be used 5 RF VTVM RF V M 1 Measurable frequency Up to 500MHz or so 6 Linear Detector 1 Measurable frequency Up to 500 1 2 Characteristics are flat and is 6088 or more 7 Digital Voltmeter 1 Voltage range FS 18V 50 2 Input resistance 1MQ or more 8 Oscilloscope 1 Measuring range
55. backup circuit When SB is turned on microprocessor IC304 s Voo and INT bocome 3 5V as C235 charges At this time simulta neously with the microprocessor s actuation RST become ac tive after which R340 C333 are cleared a few minutes later When SB is set OFF voltage detect IC307 detects the 3M line voltage 3 0 and sets the INT port to L when this happens the microprocessor enters backup mode sends data to IC302 While C325 is discharging the re ceives data which is written internally As the 3M line voltage SB 306 470 u 12303 220 u 3MS e Q303 falls further to below 2 3V voltage detect IC310 detects the volt age drop 2 3V sets the RST port to L and the RST becomes active 6 2 Battery voltage detection circuit This divides the power supply voltage and inputs it to the microprocessor s analog port It outputs a warning sound if the power supply voltage exceeds about 17 5 22 0V The voltage input to the microprocessor during transmission is linked to the A D converted LCD BATT display 2302 5310 Det C307 PSW Fig 9 Reset backup circuit 9 A E CIRCUIT DESCRIPTION 7 Battery save circuit When condition of squelch off scan off and no key tion input continues for 10 seconds the battery save mode is entered a result each section s power supply is al
56. battery from the external power supply connected to the DC IN terminal via the constant current circuit comprised by Q1 and D1 If an external power supply is not connected to the DC IN terminal the constant current circuit does not operate 5 2 Power supply switching circuit The power supply circuit is configured as shownin Fig 8 Its branches are as follows HB SB 3MS 4M 10 Power module power supply PLL reception circuit RV 3HU 3RSU 3RSV 3R36 3843 3R14 power supply AF reference voltage microphone amplifier bias Transmission circuit drive ANT switch power supply microphone amplifier power supply Microprocessor power supply power supply LCD power supply reset circuit power supply shift register power supply 3C 3T AVR reference voltage cross point Switch IC power supply voltage detector voltage PLL charge pump power supply Band shift circuit voltage TX BUSY LED illumination circuit power supply R434 310 2 C325 IC307 V DET IC301 Q311 3C E pe 0312 0505 T m SY m 0307 T TU HE Q308 AF AMP IN TX Q332 AF AMP EX 52 0330 0333 kaj id MM AFC IN AEC EY Fig 8 Power supply circuit 9 CIRCUIT DESCRIPTION 6 Microprocessor and peripheral circuits 6 1 Reset
57. ch Q307 3TU switch Q308 3T switch 3 AVR Q310 Buffer Amplifier Tone Q311 3C AVR Q312 3C switch Q313 Left side HPF switch Q314 Right side HPF switch Q315 Left side active HPF Q316 Right side active HPF Q317 TX RX LED switch Q318 Full duplex switch Q319 Q320 0321 0322 Lowers the input level of the internal speaker audio amplifier Transmission power switch Low power Transmission power switch EL low power Transmission power switch EL power UHF APC switch Q323 APC switch Q322 Q326 switch Q324 APC switch APCV APCU 0525 Transmission power Switch Q326 APC switch VHF Q327 APC switch Comparator power switch Q328 Q329 Q330 Q331 Constant current circuit Differential DC amplifier Differential DC amplifier Audio AVR Audio AVR Audio AVR switch Audio AVR switch PC power supply regulation circuit onstant current circuit Modulation output band switch S meter temperature compensation Q338 circuit VHF Q339 16 Q340 Internal External Internal External Q3 Q334 Q335 Q336 Q337 gt nternal External Audio output mute switch Internal LED illumination prevention switch 9 DESCRIPTION OF COMPONENT D19 IF switch Sub VHF 22225 000000 Di s gt Backiowprevenion D _______ D _ Waveform shaping ______ unlock detection circuit DD
58. dent PLLs and VCOs The Ref OSC makes an independent oscillation circuit applied oscillator signal to the V U PLL IC and the tripling bipolar transistor Reference oscillation circuit X2 the 12 8MHz quartz crystal oscillates at C11 the output of which is distributed and applied to IC4 and IC5 The reference oscillation frequency is divided at IC4 VHF and IC5 UHF to ob tain 5kHz and 6 25kHz reference frequencies VHF VCO KCH16 LPF Phase comparison After amplifying the VCO output at 022 VHF and Q21 UHP the comparison frequency is distributed at pulse swallow type PLL ICs IC4 and IC5 Through phase comparison with the reference frequency ob tained by dividing X2 a PLL synthesizer of 5kHz 10 2 12 5kHz 15kHz 20kHz and 25kHz steps is configured 4 MB1511PFV G BND toQ4 TRIPLE to IC5 OSC IN 8 UNLOCK 18 DETECTION Fig 5 PLL VHF VCO circuit 9 CIRCUIT DESCRIPTION Lock voltage VCO regulation voltage Due to the phase difference between the reference voltage and the comparison voltage the pulse output from the 18th and 20th pins of IC4 is passed through the charge pump Q17 019 has ripples removed at the LPF and becomes the lock voltage The charge pump power supply is stepped up from 3M at the DC DC converter raising to approximately 7V VHF VCO KCH16 VHF VCO 16 FET directly oscillates the target fre quency at t
59. e ohne Parts No werden nicht geliefert Ref No Address Parts No Description Parts A R 426 7 1 471 A70PF K 427 736 1 473 CHIP 0 0470 K 428 CHIP 0 010 429 1 CHIP 430 73681 473 CHIP 0 0470 K 14 54 CKY SHBIE471K CHIP C 432 Ix 92 0617 05 ELECTRA 220UF AWV 433 434 C92 0576 U5 TANTAL 6 3WV 435 435 CATP 6 4 K C437 438 35 104743 CHIP 0 047UF K C439 3K CHIP C 0 01UF 441 90 9 2 2UF 16WV TE 205 TRIMMER 4 AA 2C 557 1425 15 FLAT CABLE 226 UNIT x 5641 05 LAT CABLE 2 GN ik 18 41 5666 05 PIN ASSY SOCKET CN3 ye pedo etd PIN ASSY CN4 E245 0486 05 TERMINAL CNS 6 ix 74 0965 14 TERMINAL CN301 EAU 5 180 05 PIN ASSY CN302 640 5641 09 IFLAT CABLE COUNNECTWR 26 CN303 1040 65618 035 PLAT CABLE CN304 240 5629 05 ASSY CN305 4 5632 115 PIN ASSY SQCKETC6P CN306 05 ASSY 0 22 01307 40 5655 05 PIN ASSY 258 CN309 E23 0486 05 TERMINAL J2 203 0170 05 DC JACK J301 IE11 0457 05 PHONE JACK W301 F 3 3 1385 09 FINISHED WIRE SET KPETM 2 k 10 2135 SHIELDING PLATECUHF VC 430
60. he 5 oscillator circuit of Q102 The VCO regula tion voltage is applied to varicap D101 and D102 changing the oscillation frequency Also during reception the T R terminal be comes H turning 0101 and D104 and switching the oscilla tion frequency During transmission the audio signal is applied to varicap 0103 to modulate the oscillation frequency VCO KCH17 3C UHF VCO KCH17 VCO 7 bipolar transistor directly oscillates the target frequency at the Colpitts oscillator circuit of Q2 The VCO regulation voltage is applied to varicap D1 and D2 changing the oscillation frequency Also during reception the T R terminal be comes L turning off 01 and D4 and switching the oscillation frequency During transmission the audio signal is applied to varicap D4 to modulate the oscillation frequency Unlock detection circuit When the PLL is unlocked the pulse output to IC4 s LD ter minal pin 8 15 waveform shaped at D7 R66 and C71 turning UL terminal A to the L level the UL terminal voltage is detected at the microprocessor regulating the timing off transmission re ception switching Q3 BUFFER Q4 AMP BUFFER Fig 6 VCO circuit 3CV u COM Fig 7 Unlock detection 9 CIRCUIT DESCRIPTION 5 Power supply circuit 5 1 Ni Cd recharge circuit constant current of approximately OmA is supplied to the Ni Cd
61. ion power supply APCU UHF APC 26 MDU UHF modulation VHF APC SMV VHF S meter Tone input TSU 8 power suppy GND Tone coincidence detection ET DT CN2 CN3 mes O LO IN 1st local 5 NC 6 7 8 Ent WM NM RF input IF output 360MHz power supply 53 9 TERMINAL FUNCTION ars cqa TONE Tone 3TU UHF transmission voltage RB APC current detection power module power supply Microprocessor power supply IC306 output Transmission power supply VE 2 09 VHF transmission voltage Charge pump voltage Each receiver circuit PLL power supply SDA E PROM data MDV VHF modulation GND GND LOW LOW power switch 5 Each AVR reference Xpoint switch power supply IC306 output MSV VHF modulation SW MSU UHF modulation SW 19 Power supply 20 MDU modulation 22 XIN Cross band repeater input 54 98 44 40 0200 zgr 0244 AZM9L S0 9120 858 DIN ASSY 4927 Loco BARA ABAAZZ O lt lt LAN 222222222245 5 vp ONO j SM dq CO ODA AHN jaw SWE 21 HOW OW dS 1X3 4
62. is Teile ohne Parts No werden nicht geliefert TX RX UNIT X57 440X XX Ref No Address New Parts No Description Parts Bm 2 2 48 Serre R307 3 1687 CHIP R 6 BK d 308 2 7539 05 CHIP R 330K R309 IRN73HH1 1683D CHIP R 68K D 310 311 73 1 1003 CHIP R 10 J R312 HK73HB1J101J CHIP R 100 J R313 RK73HB1J2214J CHIP R 220 J R315 RK73HB1J122J CHIP R 1 2 4 8316 RK736B1J272J CHIP R 2 7K J R317 RK73HB1J182J CHIP R 1 8K J R318 56311 CHIP R S6K J R319 RK73HB1J153J CHIP R 15 1 2 R319 RK73HB1J153J CHIP R 15K J R320 RK73HB1J561J R 560 J R321 RK 3GB1J563J CHIP R 56 R322 323 RK73HB1J103J CHIP R 10K al R324 RK73GB1J273J CHIP 27K J R325 RK73HB1JA472J CHIP R 4 7 7 R326 328 RK73GB1 74723 CHIP R 4 7K J R329 RK73HB1J103J CHIP R 10 4 R330 RK736B1J391J CHIP R 390 J R331 RK73GB1J104J CHIP R 100 2 R332 RK73HB1JA72J CHIP R 4 7 7 334 325 1 7104 100 J R336 RK73HB1J472J CHIP R 4 7K J R337 RK73HB1J102J CHIP R 1 R339 472 4 7 J R340 RK73HB1 334 CHIP R 330K 7 R341 RK73GB1J682J CHIP R 6 8K J R342 73081 1223 7 CHIP 8 22 J R343 HK736B1J103J CHIP R 0K J R344 RK73HB1JA72J CHIP R 4 7 4 R345 RK 7 3HB1J103I CHIP R 10 J 8347 348 RK73GB1 0473 I CHIP R 47K J R349 RK 3HB1J104J CHIP R 100 J
63. mation 2 6 3 5kHz Microphone sensitivity display illumination 0 5 1 6kHz K P M X 2 5 4 5kHz Confirmation Reduce voltage Adjust to 4 2 2 according to the larger Confirmation Microphone sensivity 79 Parts layout ENC POWER AIVOL VR304 vR305 s S vR307 TX RX UNIT G 7 VR301 DEV UHF VR302 DEV VHF VR304 HI POWER VHF VR305 POWER VR306 EL POWER VHF VR307 EL POWER UHF TX RX UNIT A 7 TA LCD contrast point TB1 TB2 SET mode test point VR303 LCD contrast adjustment 52 ADJUSTMENT ANT BATT TERMINAL TX RX UNIT B 7 L19 36 VHF Helical Transmission frequency Helical adjustment Spectrum analyzer 9 TERMINAL FUNCTION _ CN302 Each 15514 circuit PLL power supply MDV VHF modulation DP Data EV VHF enabe CP Clock AFV VHF audio 8 UHF audio 9 ULU UHF unlock Charge pump power supply DS2 Shift register data 3MRF UHF 1st AMP SW SHU UHF shift SQU UHF squelch BSH VHF band shift SQV VHFsquelch 11 12 13 14 15 16 17 18 19 UHF transmission power supply 20 UHF S meter 21 22 23 24 25 26 6 213 ecc VHF transmiss
64. n H LOCK 597 UHF side PLL enable H ACTIVE 45 102 peer o Beeps O S ea sw O a H 48 ULU UHF side PLL unlock detection H LOCK LCD driver register selection 49 P35 PM H DATA REGISTER RD WR L INSTRUCTION REGISTER WR BUSY ADDRESS R D WR P6 RW __ LCD driver RAN selection L WR H RD 1 25 J P3 ELCO O LCD driver enable P120 VO LCD driver data output P121 LCD driver data output P122 LCD driver data output 56 57 58 _ 990 Uli Ul Vl Ul D afi 4 a RO RO RY NL 417 9 INTP INTP3 o gt O TM 3 J 7 79 gt i gt gt gt 2 2 22 2 58818 N N 0 2 ap rm Z N lt QV SQU 9 eo g 0 og lt L S Pull up resistor contact through S software CD driver data output PTT switch detection detection input Power supply detection Encoder clock input interrupt side ncoder data input TMF data input DTMF power down regulation External speaker connection detection Battery voltage input VHF side S meter voltage input HF side S meter voltage input HF side SQ voltage input UHF side SQ voltage input L L DETECT H actuated mode Non actuated mode Power down L connect No
65. n circuit to become 455 2 is quadlatcher detected at IC2 and becomes an audio signal VHF reception The 1st LOCAL signal upper hetero made from the direct oscillation of the V VCO s IC10 16 is mixed with the de sired signal to become the IFV s 38 85MHz It is further mixed with the 2nd LOCAL signal lower hetero to become 450 2 is quadlatcher detected at IC1 and becomes an audio signal Sub VHF reception The Sub VHF is mixed with the 1st LOCAL upper hetero made by the halving of U VCO to become IFU 45 05 MHz Sub UHF reception The Sub UHF is mixed with the 1st LOCAL lower hetero made by the doubling of V VCO to become 38 85 MHz Audio circuitry Audio signals AFU and detected at IC1 and IC2 enter cross point switch IC312 and are switched to either AFL or AFR AFL and AFR pass through VOL A and VOL B re enter IC312 and are switched to either IN SP or EXT SP These sig nals are amplified by independent audio amplifiers IC315 and 316 and are output either by the internal or the external speaker IC312 s control signal beep sound signal are out put from microprocessor IC304 Specification Nominal center frequency fo 38 850MHz Insertion loss 2 0aB or less 520Q 2pF Terminal impedance Table 2 MCF L71 0439 05 characteristics TX RX unit XF1 ____ mem Specification Center frequency fo 450kHz within 1 5kHz 6dB bandwidth 7 5kH
66. nput signals but it is insensitive to burst waves and the like indicates the existence of a sig nal This pin provides external monitoring After an appropriate period of time has passed it applies four pulses to ACK to access data Power supply terminal normally 2 7 5 5 lt 55 D ACK 0 i SEMICONDUCTOR DATA eBlock diagram VDD VSS Bias generation Q High group Frequency bandpass filter detection Circuit Aliasing INPUT prevention filter Dal tone GL Low group Frequency bandpass filter detection Timing circuit gt V generation circuit uw OSCI OSCO DC DC converter TC7660MEOA IC301 ePin connection TC7860M NC NO INTERNAL CONNECTION Power module PF0310 01 S AU57 ePin connection on p Signal descrimination circuit Pin assignment Pin GNO flange TH 79 A E Output 5 signal control circuit 5 0 58 2 c 19 o O Shift SD register 21 PARTS LIST Parts without Parts No not supplied Les articles non mentionnes dans le Parts No ne sont pas fournis Teite ohne Parts No werden nicht geliefert TH 79 A E Ref No Address New Description Re nation marks ERES j Elg T 79
67. on L lighting off lighting on LOCK switch input L ACTIVE Key matrix 0 gt i D b EN E E 123 N 58 9 SEMICONDUCTOR DATA u Port O Back 0 X O B 4 086 LCD driver data output LCD driver data output CD driver data output CD driver data output Pa 1 S sp Rept Pas S pr 3 P S eo emaro 1222 kemaron 1111 3 00 22 Key matrix output P54 et Key matrix output o 56 CP O Seriallock output 35 P57 062 Shiftregister 2 RF side data 8 PO jof d VHF transmission power supply control L ACTIVE 19 transmission power supply control L ACTIVE pe Transmission main power supply control L SAVE EN MI H Save power supply regulation L ACTIVE EBEN 1 Pos MSU 60 side modulation regulation L ACTIVE 45 Pee t o Visnea __ CC Per o _ shit switching 44 PO UV VHF side PLL unlock detectio
68. out Parts No are not supplied Les articles non mentionnes dans le Parts No sont pas fournis Teile ohne Parts No werden nicht qeliefert Ref No Address New Parts No Description Parts Em 5 f Eg BB i YR R14 92 1252 05 CHIP R 0 HM RIS 92 1 368 105 CHIP R 0 QHN R16 17 1473 CHIP R 47K J 1 16W IC AK2 341 1 TX RX UNIT X57 440 2 T ICK73HBICTO3K CHIP C 0 OLUF K C 23 OAK Q 10UF K CA 10 073 1 1503 CHIP J CS k CU73HCHIE270J CHIP 27PF J C6 x CC73HCHT1E820J CHIP 82PF 7 9 GK 251 04 CHIP 0 01UF K 511 X 6C6G73HCHIE680J GHIP C 68PE J 1 2 k CC73HCH1E820J CHIP C 82PF J C13 GC73HCHIE101J CHIP C 1QOPF J C14 15 CHIP 0 1600 C16 x CC73HCHIE180J CHIP J C17 CC73HCHIE2760J CHIP C 27PF J C18 k 1 73 1 34 031 CHIP C 39PF J C19 73 1 4 0 10UF K C20 21 CK73HB1C103K CHIP 0 01UF K 222 23 73 1 471 ATOPE K C24 CK73GB1IHA71K CHIP C 470PF K C25 1 103 CHIP C 0 01UF K C26 92 0576 05 TANTAL 1UF 6 3WV 027 CK73GR1C333K CHIP 0 033UF C28 CK73GR1C473K CHIP 0 04708 K C29 0 01 C30 CHIP Q 10UF K C31 GK73HB1EA71K DN C A70PF K C 32 CC73HCHIE120J CHIP t 1 2 q C33 07
69. r C369 discharge 3RU switch VHF2ndioca 3RSV 3R14 switch 3RSU 3R36 switch IF amplifier VHF IF amplifier Q 911 Noise amplifier UHF 3R80 3R43 switch Y 022 VHF fin amplifier 2 lt O O onl gt ard pce rd ee E e CO CO 4 O e T UHF VHF VHF HF N N I 5 drive 1st local dual use 055 2 Main VHF Q28 151 stage drive Q29 VHF drive 1st stage N9 9 DESCRIPTION OF COMPONENTS Function Reference No Description Doubler circuit Sub UHF 360MHz 1st local Q31 Doubler circuit 800MHz 1st local Q32 Temperature protection circuit UHF only Q33 RF amplifier UHF drive second stage Q34 RF amplifier VHF drive second stage Q35 1st mixer Sub VHF Q36 RF amplifier Q37 1st mixer Q38 1st mixer 939 RF amplifier RF amplifier switch Main VHF reception second stage 00 MHz Sub UHF 360MHz Main amp Sub UHF 360MHz reception dual use VHF reception Qo Q41 RF amplifier 800MHz Q42 HF amplifier Main amp Sub UHF VHF reception dual use 1st stage Q43 HF amplifier 360MHz 44 RF amplifier Sub VHF Q301 MIC mute SW FDP SW Mute microphone during TX microphone sensitivity ATT audio output Q302 Audio output mute switch External speaker Q303 Reset circuit Q305 APC discharge Q306 swit
70. requency 430 000MHz M E T X Power meter VH301 438 000MHz K P Linear G 7 AG 1 2 35mV detector ON Oscilloscope 2 AG 20dB down AG 1kHz 3 5mV AFVM PTT 4 TONE DEV 1 Frequency 430 000MHz T E Display confirmation 438 000MHz K P TONE DEV F Press TONE key to display confirmation T NES Frequency 430 000MHz M X TONE Push PTT 5 DEV 1 Press the D key in transmission DEV 2 2 4 2 2 mode Confirmation VHF Transmitter section 1 Power 1 BATT TERMINAL 9 6V Power meter ANT TX RX VR306 Adjust to30mW Frequency 144 000 2 Ammeter G 7 HI LOW EL ON 2 HI LOW HI Frequency 145 975MHz K P M X VH304 0 1W 147 975 2 E T confirmation 1 6A or less ON 3 Frequency 144 975 2 146 000MHz K P M X Frequency 144 000MHz Confirmation 5 0 6 0W Frequency 145 975 2 147 975 2 4 TERMINAL 4 8V Frequency 147 975MHz K P M X 1 more 145 975MHz ELT 2 6 3 5kHz 2 DEV 1 Frequency 147 975 2 Power meter ANT TX RX VR302 ON Oscilloscope 2 2088 down AG 1kHz 3 5mV Other section 1 LCD contrast 1 Ta 25 Disital CONT TA CONT Adjust to 1 5V 0 1V voltmeter 7 7 51 Adjust to 4 2kHz according to the larger Confir
71. rmal mode aa 19 9 SEMICONDUCTOR DATA Shift register BU2090FS IC3 14 G Pin connection diagram DATA CLOCK 00 Q1 02 Output Buffer Open dzin 12Bit shift egist gt Q3 Q4 decoder IC LC73881M IC305 connection diagram LC73881M STD 20 VDD 011 010 09 08 Q7 Q6 Q5 Pin description Pin 1 2 DATA Serial dala ipul CLOCK Data shift lock rise edge trigger When the clock falla if the data is I the 4415 1000 0111 Description roaiot r 0170 output ald output EHAN FET Latch data Output FET ON OFF 15 vos Powersupply gt ePin description Description An input coupling condenser is required Internally biased to VDU 2 By setting this pin to H power down mode is entered A 4 19430 2 quartz oscillator a ce ramic gencrator conncctcd between these terminals t configure the oscilla tion circuit Decoded output is output as 4 bit serial led by the L SB The ACK pinis used to shift out datato the SD pin Four pulses are needed to needed to shift out DTMF characters comprised by four bits The first pulse has a function that latches data before shift ing H indicates the existence ofa sig nal Compared with the EST pin this pin has a slower response to i
72. rox 1 8 Current TX HI 9 6 V battery terminals Approx 1 3 Approx 1 8A Approx 13A _ Approx 18A TX HI 4 8 V battery terminals M Approx 12 Approx 16A TX LO 6 0 battery terminals Approx 0 6 TX EL 6 0 V battery terminals Transmitter 144 MHz Band Approx 5 W Approx 5 W Approx 5 W Approx 5 W Output Approx 2 7 W Approx pow 4 8 V battery terminals __ Approx 1 5 W dut Approx 1 5W LO 6 0 V battery terminals 23 32 Approx OSW _ terminals v Approx 30mw Modulation Reactance MM Maximum frequency deviation _ Within 5 kHz 2 144 MHz Band 430 440 MHz Band Double conversion superheterodyne 1st intermediate frequenc 38 85 MHz 45 05 MHz 2nd intermediate frequenc 450 kHz 455 kHz Sensitivity 0 16 uV or less 0 18 uV or less 12 dB SINAD 0 25 uV or less 0 25 nV or less 0 1 less _ 12 kHz or more __28 kHz less 200 mW or higher Specifications apply only when using the V or U band They not apply to the V or LF band Specifications are subject to change without notice due to developments in technology and are guaranteed within Amateur bands only KENWOOD CORPORATION 14 6 Dogenzaka 1 chome Shibuya ku Tokyo 150 Japan KENWOOD SERVICE CORPORATION P O BOX 22745 2201 East Dominguez Street Long Beach CA 90801 57
73. s designated SSG level from the ANT termi nal and press each SET key Table below Band 2 4 3 2 SSG FREQ 12848 i2idBm ii1dBm UHF 439 94MHz 0 094 0204 063 128dBm i22dBm 11248 VHF 145 94MHz 0 094 018V 0 56 127 120 110dBm Sub U 439 94MHz O 0 23uV 0 7 12048 11048 Sub V 145 94MHz 0 231 0 7 300 FM 380 025MHz war a i22dBm 380 025 2 122dBm AIR AM 120 025MH2 i22dBm 800 FM 860 080MHz a 4 Excessive voltage warning reference voltage 13 8V recog nition setting Apply a terminal voltage of 13 8V 0 05V from a stabilizing power supply connected to the external power supply termi nal DC IN and press key 42 Next presskey 5 and confirm that a warning sound can be heard 5 The Set Mode is cleared when the power is turned off 6 on the power supply while pressing and reset VFO Note 1 Each setting overwrites the previous data so they can be set independently and in any order Note 2 Even if reception expansion is not done the 300 800 and AIR squelch settings can be done Note 3 Switching from AIR can be operated from VHF by the encoder Tweezers 9 ADJUSTMENT Common section Measurement point Adjustment point mE Condition STR E Specifications est equipment Unit Terminal 1 Setting
74. so turned on off in the same fashion reducing power consumption while in the wait mode The signal output from the microprocessor s SAVE terminal turns Q312 on off at a period of 200msec 800msec 200msec 200msec when DTSS basic functions are on As Q311 NIS us SB 1 4 9 3R43 9 7 e 5 3R36 it 2 3RSU Lu 3MS 5 Q6 3814 n 3RSV 37 Q5 ftp Q3 3RV 3RU Fig 10 Battery save circuit 8 LED drive circuit The LCD illumination LED is built into the LCD ASSY and regulates the Q317 at the microprocessor port Fig 11 The TX BUSY LEDs are controlled by pulling the cathode sides of 2 color LEDs D319 and D320 to the shift register IC314 Fig 12 4M R402 SB COM LED Fig 11 LCD illumination 0319 IC314 SHIFT REGISTER COM Fig 12 LED lamp circuit during TX BUSY 12 CIRCUIT DESCRIPTION 9 Key rotary encoder input circuit 2 47 P50 51 52 P53 Fig 13 Key rotary encoder input circuit KyOO 1 2 KyO3 KyO4 LOCK 4 54 TH 79 2 1 40 INTPO INTP3 5304 zd VR309 13 9 CIRCUIT DESCRIPTION 10 Au
75. uminates After pressing SQL VR rotate the encoder right 4 Consumption current SSG OFF 1 Frequency 144 050MHz SSG 122dBm 3dBm 5 S meter 6 Tight squelch 1 Frequency 144 050MHz SQL MAX SSG OFF 2 SSG 113dBm 0 5uV Close squelch to make the display become 20 dBm ATT 10 dB view B blank 2dB m A 20 00 MHz 20 00 0288 08 HE rw 146 00 50 0 Fig 1 Helical BPF adjustment waveform VHF BAND 49 9 SUB UHF receiver section Condition 1 Frequency 435 050MHz 444 050MHz SSG 73dBm 50uv 1 Frequency 435 050 2 444 050MH2 SSG 117Bm 0 32uV 2 Frequency 430 050MHz 438 050MHz 3 Frequency 439 950MHz E M T X 449 950MHz 1 Frequency 435 050MHz E M T X 444 O50MHz SSG 120dBm 3dBm Large inout S N 2 Sensitivity 3 S meter Oscilloscope ADJUSTMENT Measurement point Adjustment point EX SP Distortion factor meter SSG ANT Panel LCD Specification Method Confirmation 34dB or more Confirmation 12dB SINAD or more Confirmation
76. xiliary circuits cTCSS This sets the tone frequency with data from the microproces sor IC304 Audio input is wave detection output entered to TSU 8 via the cross point switch 1 When the tones match the SDO terminal turns to the L level The microprocessor decides and regulates SDO terminal audio output X point and AFC IN AFC EX Al2 AE2 SRL 3RR each port During TONE signal transmission the TONE signal is output and modulated via the LPF from the microprocessor TONE port pin No 5 DTSS code is done with serial data from the micropro cessor As with CTCSS audio input is entered from the cross point switch When it detects the signal that data 15 sent to the microprocessor The microprocessor decides matching codes and regulates audio output uch 0301 During signal transmission the signal is output from the microprocessor port pin No 6 Microphone in put is regulated by the KM terminal The signal is modu lated through the microphone amplifier During DTMF signal transmission the signal can be monitored from the SP through the cross point switch DTMF decode timing The single DIMF decode IC actuates both operated and non operated bands During single band operation only the main band 15 checked During dual band operation the circuit switches to and checks the busy band Accordingly there may be occasions when
77. z or more 40dB bandwidth 15 2 or less Ripple 204 or less 450 within 1 5 Guaranteed attenuation 100kHz 27 dBormore Insertion loss 6dB or less I O impedance 1 5kQ Table3 Ceramic filter L72 0902 05 characteristics TX RX unit CF1 Specification Nominal center frequency 45 050MHz fo Pass bandwidth t7 5kHz or more at 3dB Attenuation bandwidth 22kHz or more at 25dB Guaranteed attenuation 80dB or more within 591 2 oprious 40dB or more Ripple 1 0dB orless Terminal impedance 800Q 2pF Table 4 MCF L71 0409 15 characteristics TX RX unit XF2 Specification Nominal center frequency 455kHz 1 5kHz or less of 65dB bandwidth fo 2788 or more orless impedance 1 5kQ Pass bandwidth ripple Guaranteed attenuation 100 Insertion loss Table 5 Ceramic filter L72 0362 05 characteristics TX RX unit CF2 TH 79 CIRCUIT DESCRIPTION 3 Transmission signal channel The transmission system diagram 15 as shown In Fig 3 144 MHz Band 430 440 MHz Band ANT amplifier LPF TA75W558FU VCO UHF Buffer Buffer Buffer Excitation Excitation Power 25 4829 amplifier amplifier amplifier amplifier amplifier amplifier 25 4808 25 5066 25 5066 254226 2563356 S AU57 Buffer amplifier 25 5066 PLL MB1511 CPU pPD78056GC signal REF OSC TC7SUOAFU X tal LL

TH-79 Service manual

Contents

Download Pdf Manuals

Related Search

Related Contents