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1. DTC114 EU Symbol 14 B UN9215 Symbol 8E B 251586 GR Symbol 5 B 0 5 25604215 O Symbol m 2SJ144 Y Symbol VX chi MRF9745 Symbol M745 258798 DK Symbol DK 2504226 R25 Symbol R25 2SK1829 Symbol K1 E UMZ1N Symbol Z1 E1 B1 C2 2503356 R24 Symbol R24 2504228 R44 Symbol R44 DTA114 EU Symbol 16 B UMZ2N Symbol Z2 E1 B1 B2 2504081 S Symbol BS B C E 2SC5108 Y Symbol MC B 0 5 DTA144 EU Symbol 16 B UN5119 Symbol 6K B e DIODES 155355 14 MA77 MA2S077 MA2S111 Symbol A Symbol TL Symbol 4B Symbol S Symbol A MA2S728 Symbol B T SECTION9 BOARD LAYOUTS 9 1 MAIN UNIT e TOP VIEW IC 4008A C20 U 2 2 Q N R37 o S a 8 ef IN E an C57 e BOTTOM VIEW 1 4008 e TOP VIEW 4008 e BOTTOM VIEW 4008 9 2 RF UNIT e TOP VIEW to MAIN unit J4 1 1 9 5 e BOTTOM VIEW 956 SECTION 0 BLOCK DIAGRAM RF UNIT CHASSIS UNT ANT x TX RX 433 075 434775MHz 7 CDBCA450CX24 2 _ _ _ _ C _ _ cela FI8 CFWM450E en FI2 rer FI1 NSVA468 Q3 2505134 CERAMIC 1st IF 21 7 MH BPF XTAL sLIF 2 013 2504081 RER TERZ PEREZ RZA 25 8 014 6 VCO AA D
2. ERR DS1 LN1371G R61 R79 220k 47 T 3 94 o SO 3 79 HSJ1493 01 010 co cof F SC 3 98 lt 4 Le R23 r C 0 19K ri 018 SO 2 95 0 206 EB R 2 97 DS2 LD BU10185J 0 1 Q11 2SC4213 FR T 4 R56 E C97 C96 SP1 1 W T 330 P T 330 P er IC9 R26 NJM2070M cso 10k a d ITA 1 R302 D101 MA2S111 CSa l ITA 1 1 7 1028 1258798 3 V H 29 BP5 28 BP4 527 26 BP2 S25 7 S24 8 S23 9 S22 1 S21 11 520 12 519 13 S18 14 17 15 S16 16 S15 17 12 514 18 18 513 19 14 512 20 4 REMIN R112 33 k ITA 1 10 k CSAV 1 2201 ITA 1 05 1303 MA2S111 ITA 1 155355 CSA 1 IMA2S1111 155355 CSA 1 C 3 02 ITA 1 CSA 1 T 0 50 8 TA ITA 1 CSA 1 0 7 F T 1 56 T 3 70 1 2 k ITA 1 me 3 3 k CSA 1 CSA 1 _ _ 560 _ 11 1 11 2 RF UNIT C COMMON T TX R RX 1 T 0 T 1 05 2 61 R 0 82 0 NSVA468 C32 La L206 C31 C30 15 L6 ps I 6P 12 nH 18 nH 7P 27 7P 17 nH 17nH 15nH C45 3 4 5 6 77 8 c210 C209 D7 I 10 519 gt 22 P 7 P 6 P 25077
3. 2SC4228 T2 4 2SC5006 T1 2SC4081 T107 5 R 1 1 4510005870 S ELECTROLYTIC ECEV1HA3R3SR 4030011600 S CERAMIC C1608 JB 1C 104KT N 4030011600 S CERAMIC C1608 JB 1 104KT N 4030006850 S CERAMIC C1608 JB 1H 471K T A 1510000770 S TRANSISTOR 2SA1586 GR TE85R 1530002280 S TRANSISTOR 25 4081 T107 S 1530002280 S TRANSISTOR 25 4081 T107 S 1530000372 S TRANSISTOR 2503356 2 1 OLD 3 8 O gt 4030011600 4030011600 4030011600 4030011600 4510005430 4030011600 4030009590 4030011600 4030006900 4030008650 4030006860 4030006860 4030011600 4510005900 4030008900 4030008920 4030011600 4030011600 4030009590 4030006850 4030006850 4030006850 4030006850 4030006850 4030006850 4030010760 4030010760 4030010760 4030010760 4030010760 4030010760 6450000130 6450001060 6510017950 5010000120 5030001580 7700002160 2260001900 S CERAMIC S CERAMIC S CERAMIC S CERAMIC S ELECTROLYTIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S ELECTROLYTIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC CONNECTOR CONNECTOR S CONNECTOR S LED LCD MICROPHON SWITCH C1608 JB 1C 104KT N C1608 JB 1C 104KT N C1608 JB 1C 104KT N C1608 JB 1C 104KT N ECEV0JA220SR C1608 JB 1C 104KT N C2012 JF
4. S CERAMIC S ELECTROLYTIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC C1608 JB 1H 471K T A C1608 CH 1H 220J T A C1608 CH 1H 060D T A C1608 CH 1H 1R5C T A C1608 CH 1H 100D T A C1608 CH 1H R75C T A C1608 CH 1H 080D T A C1608 JB 1H 102K T A C1608 JB 1C 473K T A C1608 JB 1H 471K T A C1608 JB 1C 223 C1608 JB 1H 102K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 CH 1H 030C T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 CH 1H 070D T A C1608 CH 1H 070D T A C1608 CH 1H 060D T A C1608 CH 1H 5 C1608 CH 1H 100D T A C1608 CH 1H 330J T A C1608 CH 1H 150J T A C1608 CH 1H 270J T A C1608 CH 1H 100D T A C1608 CH 1H 220J T A C1608 JB 1E 103K T A C1608 CH 1H 120J T A C1608 CH 1H 120J T A C1608 CH 1H 020C T A C1608 CH 1H 1R5B T A 61608 CH 1H 3R5B T A C1608 JB 1H 471K T A C1608 CH 1H 5 C1608 CH 1H 1R5B T A ECEVOJA220SR 61608 CH 1H 050C T A C1608 JB 1E 103K T A CTZ3S 10A W1 AF C1608 JF 1C 224Z T A C1608 JB 1H 471K T A C1608 JB 1C 104KT N ECST1CY105R C1608 CH 1H 080D T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 JB 1C 104KT N C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 CH 1H 220J T A C1608 CH 1H 680J T A ECEV1CA100SR C1608 JF 1C 224Z T A C1608 JB 1C 473K T A C1608 JB 1C 104KT N C2012 JF 1
5. 0 kHz 0 40 dB Adjacent channel power more than 47 5 External mic connector 3 conductor 2 5 d mm 2 2 Receiving system Double conversion superheterodyne nd 450 kHz 100 mW at 10 distortion with an 8 Q load External SP connector 2 conductor 3 5 d mm 1 8 8 Q TRANSMITTER RECEIVER All stated specifications are subject to change without notice or obligation CHANNEL FREQUENCY LIST mn No Frequency MHz en No Frequency MHz No Frequency MHz 433 0750 433 1000 433 1250 433 1500 433 1750 433 2000 433 2250 433 2500 433 2750 433 3000 433 3250 433 3500 433 3750 433 4000 433 4250 433 4500 433 4750 433 5000 433 5250 433 5500 433 5750 433 6000 433 6250 433 6500 433 6750 433 7000 433 7250 433 7500 433 7750 433 8000 433 8250 433 8500 433 8750 433 9000 433 9250 433 9500 433 9750 434 0000 434 0250 434 0500 434 0750 434 1000 434 1250 434 1500 434 1750 434 2000 434 2250 434 2500 434 2750 434 3000 434 3250 434 3500 434 3750 434 4000 434 4250 434 4500 434 4750 434 5000 434 5250 434 5500 434 5750 434 6000 434 6250 434 6500 434 6750 434 7000 434 7250 434 7500 434 7750 SECTION 2 INSIDE VIEWS e MAIN UNIT TOP VEIW BOTTOM VEIW Audio amplifier T n IC9 e e t si 1 m EEPROM T43 Regurator n x 28 258798 ME E a X24C01AS 3 Regurator IC6 S 81230SG CPU IC1 uPD753036GK R 3
6. ERJ3GEYJ 561 V 560 ERJ3GEYJ 104 V 100 NTCCF2012 3NH 103KC T ERJ3GEYJ 153 V 15 KQ ERJ3GEYJ 153 V 15 KQ ERJ3GEYJ 122 V 1 2 ERJ3GEYJ 472 V 4 7 ERJ3GEYJ 182 V 1 8 ERJ3GEYJ 104 V 100 ERJ3GEYJ 103 V 10 ERJ3GEYJ 180 V 18 ERJ3GEYJ 563 V 56 ERJ3GEYJ 332 V 3 3 ERJ3GEYJ 123 V 12 KQ ERJ3GEYJ 684 V 680 kQ ERJ3GEYJ 394 V 390 ERJ3GEYJ 392 V 3 9 KQ ERJ3GEYJ 473 V 47 ERJ3GEYJ 273 V 27 KQ ERJ3GEYJ 103 V 10 ERJ3GEYJ 822 V 8 2 KQ ERJ3GEYJ 684 V 680 kQ ERJ3GEYJ 394 V 390 kQ ERJ3GEYJ 103 V 10 ERJ3GEYJ 392 V 3 9 ERJ3GEYJ 103 V 10 ERJ3GEYJ 680 V 68 Q ERJ3GEYJ 103 V 10 ERJ3GEYJ 100 V 10 ERJ3GEYJ 682 V 6 8 ERJ3GEYJ 102 V 1 KQ ITA ITA 1 NTCCM1608 3NH 221KC CSA CSA 1 EVM 1XSX50 B14 103 ERJ3GEYJ 102 V 1 KQ ERJ3GEYJ 102 V 1 KQ ERJ3GEYJ 221 V 220 ERJ3GEYJ 181 V 180 ERJ3GEYJ 270 V 27 Q ERJ3GEYJ 181 V 180 ERJ3GEYJ 221 V 220 ERJ3GEYJ 102 V 1 KQ CSA CSA 1 ERJ3GEYJ 123 V 12 KQ ITA ITA 1 C1608 JB 1H 102K T A C1608 JB 1C 473K T A C1608 JB 1C 473K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A RF UNIT ORDER osama 4030006850 4030007050 4030006970 4030010780 4030007010 4030009470 4030006990 4030006860 4030008920 4030006850 4030008880 4030006860 4030006850 4030006850 4030006940 403
7. IMSA 9210B 1 02T ANIE R25 22 nH SA 9210B 1 0 33 k D102 D101 MA2S077 MA2S077 C8 RE TESTPORI ido 6P 10P 8P R7 470 P R 0 T 0 47 d C74 R 2 60 FI3 470 P CFWM450E R 3 R52 560 21 25 MHZ 0 001 R205 NTCCM16083NH221KC CSA 1 25 72 ADS R54 C1 R2 R3 FL 298 C36 C46 R4 R5 1 k ITAV 1 NTCCF20123NH 9 0 001 82k 18k W8 10 22 22 100 k 1202 RI 2 2 uH 820 O H 4 R59 Q1 2 1 8 k 2SC4215 Q2 28 2SC4226 02 470 P 0 047 R19 R211 R212 me Q8 T 0 75 MRF9745 C3 470 6 27 180 T an Ki R 0 84 0 047 7 2208 C205 R58 0 001 4 7k R33 8 2 k 1 28 acm C 1 22 R36 220 Q12 L12 C 2 01 10 uH 2SC5108 ceo C84 C55 22 42 470 P 0 22 470 P L14 DA 33 nH RO 1SV284 C56 L15 D9 R 0 78 R50 N 0 5 P 82 nH w5 159355 299 3 C 3 06 EVM 1XBQ4 Bao D5 25 4081 47 k 85 C20 R29 1SV284 47 33k 2590 180 C57 7 7 1 5 P L208 U 0 1 K gt 10 uH 1205 pa 111 0 75 68 nH 10 uH C 0 70 Q6 Q7 R76 3 9 k 25 5108 25 5108 C96 T 0 T 0 R71 470 P R 0 95 R 0 99 R67 10 k J dix C89 680 k R72 0 0068 8 2 k Q16 ae 91 K 0 047 0 01 22011 1 6 C90 8 015 K N 12k 0 01 390k 2SC4081 C93 4 T 0 R70 0 01 390 k R 0 02 T 0 R209 Bee 95 2 96 220 680 k R83 10k J2 470P 4 175643 4 11 2 Icom Inc 6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan Phone 06 6793 5302 Fax 06 6793 0013 Icom America Inc Corporate Headquarters
8. JB 1H 471K T A C1608 JB 1H 471K T A C1608 JB 1C 104KT N TEMSVD2 0J 157M 12R ECEV1CA100SR C1608 JB 1 104KT N C1608 JB 1 104KT N C1608 JB 1 333K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 JB 1 104KT N C1608 JB 1C 473K T A C1608 CH 1H 271J T A C1608 JB 1 223K T A C1608 JB 1 104KT N C1608 JB 1H 472K T A C1608 JB 1 104KT N C1608 JB 1H 102K T A C1608 JB 1 104KT N C1608 JB 1E 103K T A C1608 JB 1 104KT N C1608 CH 1H 240J T A C1608 CH 1H 240J T A C1608 JB 1H 471K T A ECEVOJA220SR C1608 JB 1C 104KT N C1608 JB 1C 104KT N C1608 JB 1C 104KT N ECEV1HA2R2SR C1608 JB 1C 104KT N C1608 JB 1C 104KT N zi 8 r MAIN UNIT ORDER Li 7030003860 7030003860 7030003860 9001502002 7120000470 7030003860 8930045510 0910050341 0910050792 BOARD ORDER WIRT scena 1110004150 1110003200 1530002600 1530002920 1530003620 1530003320 1530003320 1530002940 1530003260 1530002280 S JUMPER S JUMPER S JUMPER WIRE JUMPER S JUMPER LCD CONTACT PCB PCB S IC 5 S TRANSISTOR S TRANSISTOR S TRANSISTOR S TRANSISTOR S TRANSISTOR S TRANSISTOR S TRANSISTOR S TRANSISTOR ERJ3GE JPW V ERJ3GE JPW V ERJ3GE JPW V 72 98 030 X98 X98 ERDS2T0 ERJ3GE JPW V SRCN 2045 SP N W 5161A ITA ITA 1 B 5109B CSA CSA 1 TB31202FN ER TA31136FN EL 25 4215 TE85R 2SC4226 T2 R25 2SC5194 T1 25 5108 TE85R 25 5108 TE85R
9. MHz RF FREQUENCY e Transmitting panel quency counter to the antenna OUTPUT 1 Connect an RF power 9 mW ITA 1 R206 POWER meter to the RF test 470 mW CSA 1 port 1 FM 1 Operating channel Ch 1 RF Connect FM devia 4 8 kHz DEVIATION e Connect an audio generator to the tion meter to the RF MIC jack and set as test port J1 1 kHz 100 mV rms Set an FM deviation meter as HPF OFF LPF 20 kHz or 15 kHz De emphasis OFF Detector P P 2 Set group No 01 Transmitting 2 Set group No OFF gt 10 mV 3 dB Verify Set an audio generator output level SQUELCH Operating channel Ch 35 Transmitting until the deviation is 3 5 kHz Transmitting Operating channel Ch 35 Front Internal speaker Push Connect an SSG to J1 on the RF unit panel and hold and set as MODE Level 0 14 uV and 124 dBm DOWN Modulation OFF Receiving e Setan SSGas Audio signal Level disappears Receiving C63 a Reference frequency adjustment m 0 WO EM deviati R206 De L di Seul Output power x x RE J1 TA RF adjustment x O Bo test po ENTERING THE ADJUSTMENT MODE w TEST D Turn the transceiver power OFF 2 While connecting the TEST to GND then turn power ON SECTION 6 PARTS LIST MAIN UNIT ORDER 1140006881 uPD753036GK 524 BE9 111000
10. V 1 2 ITA ITA 1 ERJ3GEYJ 332 V 3 3 CSA CSA 1 ERJ3GEYJ 561 V 560 CSA CSA 1 ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 104 V 100 CSA CSA 1 only ERJ3GEYJ 225 V 2 2 CSA CSA 1 only ERJ3GEYJ 271 V 270 CSA CSA 1 only ERJ3GEYJ 101 V 100 ERJ3GEYJ 183 V 18 ITA ITA 1 only ERJ3GEYJ 102 V 1 ITA ITA 1 only 100 100 100 100 61608 8 1H 152K T A 1608 JB 1 104KT N C1608 JB 1 104KT N C1608 JB 1H 471K T A C2012 JF 1C 105Z T A C1608 JB 1C 104KT N S Surface mount MAIN UNIT ORDER E 4510004630 4030006850 4030006850 4030006850 4030011600 4550006880 4510004630 4030011600 4030011600 4030008900 4030006850 4030006850 4030011600 4030008920 4030011280 4030008880 4030011600 4030006880 4030011600 4030006860 4030011600 4030006900 4030011600 4030009650 4030009650 4030006850 4510005430 4030011600 4030011600 4030011600 4510005860 4030011600 4030011600 S ELECTROLYTIC ECEV1CA100SR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S TANTALUM S ELECTROLYTIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S ELECTROLYTIC S CERAMIC S CERAMIC S CERAMIC S ELECTROLYTIC S CERAMIC S CERAMIC C1608 JB 1H 471K T A C1608
11. 0006850 4030006850 4030006980 4030006980 4030006970 4030006910 4030007010 4030007070 4030007030 4030007060 4030007010 4030007050 4030006900 4030007020 4030007020 4030006930 4030009540 4030009350 4030006850 4030006910 4030009540 4510005430 4030006960 4030006900 4610002150 4030009660 4030006850 4030011600 4550006150 4030006990 4030006850 4030006850 4030011600 4030006850 4030006850 4030006850 4030007050 4030007110 4510004630 4030009660 4030008920 4030011600 4030008680 4030006850 4510004650 4030011810 4030011600 4510004650 4030009880 4030006900 4030008920 4030006900 4030006900 4030006850 4030006850 4030007050 4030009540 4030006850 4030007050 4030007050 4030006990 4030006860 4030006860 4030006990 4030007000 4030006970 4030006980 S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S ELECTROLYTIC S CERAMIC S CERAMIC S TRIMMER S CERAMIC S CERAMIC S CERAMIC S TANTALUM S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S ELECTROLYTIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S ELECTROLYTIC S CERAMIC
12. 03680 7030003680 7030003680 7030003680 7030003680 7030003680 7030003560 7030003560 7030003620 7030003800 7030003560 7030003620 7030003450 7030003500 7030003410 7030003520 7030003680 7030003840 7030003370 7030003320 7030003590 7030003440 4030009980 4030011600 4030011600 4030006850 4030008680 4030011600 S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC 6 ERJ3GEYJ 224 V 220 ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 105 V 1 MQ ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 102 V 1 ERJ3GEYJ 102 V 1 ERJ3GEYJ 224 V 220 ERJ3GEYJ 472 V 4 7 ERJ3GEYJ 104 V ERJ3GEYJ 104 V ERJ3GEYJ 104 V ERJ3GEYJ 104 V ERJ3GEYJ 104 V ERJ3GEYJ 104 V ERJ3GEYJ 104 V ERJ3GEYJ 104 V 100 ka ERJ3GEYJ 103 V 10 ERJ3GEYJ 103 V 10 ERJ3GEYJ 333 V 33 ERJ3GEYJ 105 V 1 ERJ3GEYJ 103 V 10 CSA CSA 1 ERJ3GEYJ 333 V 33 ITA ITA 1 ERJ3GEYJ 122
13. 106 2SA1586 GR TE85R 2SJ144 Y TE85R UMZ2N TR 2504081 T107 S 2SB798 T2 DK DTC114EUA T106 7030003590 S RESISTOR 7030003590 S RESISTOR 7030003590 S RESISTOR 7030003660 S RESISTOR 7030003620 S RESISTOR 7030003800 S RESISTOR 7030003560 S RESISTOR 7030003680 S RESISTOR 7030003400 S RESISTOR 7030003560 S RESISTOR ERJ3GEYJ 183 V ERJ3GEYJ 183 V ERJ3GEYJ 183 V ERJSGEYJ 683 V 18 kQ 18 kQ 68 3 DO ERJ3GEYJ 333 V 33 kQ ERJ3GEYJ 105 V 1 ERJ3GEYJ 103 V 10 ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 471 V 470 Q ERJ3GEYJ 103 V 10 ARE JE 1590002630 1750000550 1750000550 1750000550 1790001250 1750000550 1790001250 1790001250 6050010450 7030003670 7030003670 7030003810 7030003710 7030003450 7030003680 7030003310 7030003200 7030003520 7030003500 7030003620 7030003580 7030003820 7030003570 7030003560 7030003320 7030003660 7030003800 7030003780 7030003540 7030003540 7030003530 7030003560 7030003600 7030003600 7030003670 7030003640 7030003520 7030003510 7030003650 7030003840 7030003320 7030003320 7030003520 7030003760 S TRANSISTOR S DIODE S DIODE S DIODE S DIODE S DIODE S DIODE S DIODE S XTAL S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESIS
14. 1C 225Z T A C1608 JB 1C 104KT N C1608 JB 1E 103K T A C1608 JB 1H 332K T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 JB 1C 104KT N ECEVOGA101SR C1608 JB 1 333K T A C1608 JB 1 473K T A C1608 JB 1C 104KT N C1608 JB 1C 104KT N C2012 JF 1C 225Z T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 CH 1H 331J T A C1608 CH 1H 331J T A C1608 CH 1H 331J T A C1608 CH 1H 331J T A C1608 CH 1H 331J T A C1608 CH 1H 331J T A HSJ1102 01 540 HSJ1493 01 010 4 175638 4 LN1371G TR LD BU10185J E 10185 1 KUC3523 040245 SW 149 e 1590002600 1790000620 1790000620 1720000640 1720000640 1790001260 1750000550 1750000550 1790001260 1790001260 1790001240 2040001330 2010002330 2020001270 6050010480 6070000210 6200002240 6200004380 6200005670 6200008270 6200008270 6200005700 6200003640 6200003640 6200002350 6200005720 6200007000 6200005710 6200005700 6200008430 6200002190 6200007000 6200005700 6200005720 6200008440 6200008440 6200006670 S FET S DIODE S DIODE S VARICAP S VARICAP S DIODE S DIODE S DIODE S DIODE S DIODE S DIODE S SAW MONOLITH CERAMIC S XTAL MRF9745 1 77 TX 77 TX 1SV284 TPH3 1SV284 TPH3 MA2S077 TX 155355 7 155355 7 MA2S077 TX MA2S077 TX MA2S728 TX NSVA468 433 92MHZ FL 298 21 700 MHz CFWM450E CR 633 21 250 MHz S DISCRIMINATOR CDBCA450
15. 2380 116th Avenue N E Bellevue WA 98004 U S A Phone 425 454 8155 425 454 1509 URL htip www icomamerica com Customer Service Phone 425 454 7619 Icom Canada A Division of lcom America Inc 3071 5 Road Unit 9 Richmond B C V6X 2T4 Canada Phone 604 273 7400 Fax 604 273 1900 lcom Australia Pty Ltd A C N 006 092 575 290 294 Albert Street Brunswick Victoria 3056 Australia Phone 03 9387 0666 Fax 03 9387 0022 URL http www icom net au Asia Inc 6F No 68 Sec 1 Cheng Teh Road Taipei Taiwan R O C Phone 02 2559 1899 Fax 02 2559 1874 Icom Europe GmbH Communication Equipment Himmelgeister Str 100 D 40225 Dusseldorf Germany Phone 0211 346047 Fax 0211 333639 URL http www icomeurope com Icom Spain S L Crta de Gracia a Manresa Km 14 750 08190 Sant Cugat del Valles Barcelona SPAIN Phone 93 589 46 82 Fax 93 589 04 46 URL http www icomspain com Icom UK Ltd Unit 9 Sea St Herne Bay Kent CT6 8LD U K Phone 01227 741741 Fax 01227 741742 URL http www icomuk co uk Icom France S a Zac de la Plaine Rue Brindejonc des Moulinais BP 5804 31505 Toulouse Cedex France Phone 561 36 0303 Fax 561 36 03 00 URL http www icom france com Count on us A 55051 S Icom Inc Printed in Japan 6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan 1998 by Icom Inc
16. 2820 NJM2100M T1 1140004450 X24C01AS 3 0T6 1110004710 S 80928ANMP DDR T2 1180001150 S 81230SG QB T1 1110002810 S IC NJM2070M T1 MAIN UNIT ORDER E oma 7030003740 S RESISTOR ERJ3GEYJ 334 V 330 7030003820 S RESISTOR ERJ3GEYJ 155 V 1 5 PE 7030003450 S RESISTOR ERJ3GEYJ 122 V 1 2 kQ 7030003330 S RESISTOR ERJ3GEYJ 121 V 120 Q 7030004050 S RESISTOR ERJ3GEYJ 180 V 1 7030003580 S RESISTOR ERJ3GEYJ 153 V 15 7210001970 VARIABLE RV 244 RK0971110 10KA OO 2101 r 55555551 SII 12 1590000720 S TRANSISTOR 1590001860 S TRANSISTOR 1590000800 S TRANSISTOR 1510000580 S TRANSISTOR 1560000840 S FET 1530002280 S TRANSISTOR DTA144EUA T106 UN9215 TX UN5119 TX 2SA1362 GR TE85R 2SK1829 TE85R 2804081 T107 S 7030003680 7030003280 7030003680 7030003530 7030003590 7030003590 7030003590 S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 470 V 47 ERJ3GEYJ 104 V 100 ERJ3GEYJ 562 V 5 6 ERJ3GEYJ 183 V 18 ERJ3GEYJ 183 V 18 kQ ERJ3GEYJ 183 V 1530002280 S TRANSISTOR 1530003090 S TRANSISTOR 1530002280 S TRANSISTOR 1590001330 S TRANSISTOR 1510000770 S TRANSISTOR 1590001390 5 1590002490 S TRANSISTOR 1530002280 S TRANSISTOR 1520000200 S TRANSISTOR 1590000680 S TRANSISTOR 2504081 T107 S 25 4213 TE85R 2504081 T107 S DTA114EUA T
17. 7 MA25077 Do SSE D101 MA2S077 2nd Lo 21 25 MHz 2 G D102 MA2S077 06 8 D4 D5 18V284 1st LO 411 375 413 075MHz ceca ene Q8 DATA CK STB F 77 1 TX 433 075 434 775MHz PLL ES LO PRE K N TXIRX DRIVE PWR 0202 MRF9745 T Q7 D1 MA77 c 2 5108 D2 MA77 MA2S728 2066 21 25 MHz gt 012 2505108 I ES LEVEL SET POWER SET Q15 28C4081 R206 Q16 25 4081 Q IC2B Q6 DTA144EU NJM2100M 2SK1829 Q29 DTC114EU MIC MIC1 IDC ME Ma MIC KUC3523 Ji MIC JACK SQL PSC Q7 2201 EX Q2 UN9215 Kd Q3 UN5119 a 2SC4081 224 1 CR 627 CPU uPD753036GK LO 5 8368 MHz IC9 NJM2070M J3 SP JACK 1 POWER POWER y S 5 V 0272064061 Q5 2SA1362 SP1 R 3 Q18 Q28 25B798 Q10 25 4081 l Q14 CURRENT 6 0101 UMZ1N Q11 2SC4213 gt E pou DTA114EU 05 155355 D101 155355 UP 6 BATTERY DS1 ITA 1 DOWN S 80928ANMP LN1371G Q25 UMZ2N i A 1 D4 155355 DD eWASSIS UNIT 51 D5 MA2S111 CHASSIS UNIT D101 MA2S111 p 0 V V V D303 MA2S111 43V TO LOGIC R 3 T 3 lt COMON LINE 4 1X LINE MP Rx LINE lt C DATA BUS LINE 10 1 SECTION 11 VOLTAGE DIAGRAM 11 1 MAIN UNIT COMMON RX R98 R99 R100 R101 R102 100 100k 100k
18. C 105Z T A C1608 JB 1H 471K T A ECEV1EAAR7SR C1608 JB 1 224K T N C1608 JB 1C 104KT N ECEV1EAAR7SR C1608 JB 1H 682K T A C1608 JB 1E 103K T A C1608 JB 1C 473K T A C1608 JB 1E 103K T A C1608 JB 1E 103K T A C1608 JB 1H 471K T A C1608 JB 1H 471K T A C1608 CH 1H 220J T A C1608 CH 1H 1R5B T A C1608 JB 1H 471K T A C1608 CH 1H 220J T A C1608 CH 1H 220J T A C1608 CH 1H 080D T A C1608 JB 1H 102K T A C1608 JB 1H 102K T A C1608 CH 1H 080D T A C1608 CH 1H 090D T A C1608 CH 1H 060D T A C1608 CH 1H 070D T A S Surface mount RF UNIT ORDER sana 4030006860 S CERAMIC C1608 JB 1H 102K T A 6910007660 CONNECTOR IMSA 9210B 1 02T 6510018170 S CONNECTOR 4 175643 4 7030003860 S JUMPER ERJ3GE JPW V 7030003860 S JUMPER ERJ3GE JPW V 7030003860 S JUMPER ERJ3GE JPW V 7030003860 S JUMPER ERJ3GE JPW V 7030003860 S JUMPER ERJ3GE JPW V 7030003860 S JUMPER ERJ3GE JPW V 0910050351 PCB B 5162A ITA ITA 1 0910050781 PCB B 5162A CSA CSA 1 5 18686 mount SECTION 7 MECHANICAL PARTS AND DISASSEMBLY 7 1 CABINET PARTS CHASSIS PARTS REF NO ORDER NO DESCRIPTION SP1 1 2510000960 Speaker K036NA500 26A27 3310002090 Antenna 2045ANT 8210015181 Panel 2045 Front Panel 1 ITA CSA 8210016101 Panel 2045 Front Panel A 1 ITA 1 CSA 1 8210015191 Panel 2045 Rear Panel 1 ITA CSA 8210016111 Panel 2045 Rear Panel A 1 ITA 1 CSA 1 8110006400 Cover 2045 Rear Cove
19. C1 Port Input port for the PTT switch from the PTT2 external mic jack MAIN unit J1 Low External PTT switch is ON PITI Input port for the internal PTT switch Low While PTT switch is pushed DOWN Input port for the DOWN switch 36 UP Input port for the UP switch MODE Input port for the MODE switch Input port for the POWER switch 38 POWSW Low While POWER switch is pushed Input port for PLL unlock signal from 45 UNLK the PLL IC RF unit IC1 Low During unlock 0 5 beep audio signal Outputs volume mute switch Q23 RMUTE control signal High While squelched Outputs control signal for the AF ampli 49 AFON fier regulator circuit Q5 Q10 Q11 High When squelch is open 50 PLLCK Ouipuis clock signal to the PLL IC unit 1 1 Outputs the T 3 regulator control sig nal Q27 Q28 D5 etc Outputs control signal for LCD back LAMPC Low While LCD backlight is ON Outputs internal microphone control signal MICSW High While internal PTT switch is pushed Outputs MIC mute signal for RING function MMUTE High While RING signals are out put etc N N SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION M REQUIRED TEST EQUIPMENT EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Output voltage 4 5 V DC Frequency range 300 3000 Hz pos ny Current capacity 1 A or more owa Measuring range 1 500 mV
20. CX24 S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL S COIL ELJFC 2R2K F LL1608 F18NK ELJRE 12NG F 0 26 1 0 5TL 17N 0 26 1 0 5TL 17N ELJRE 22NG F MLF1608K 100K T MLF1608K 100K T 1 27NJO4 ELJRE 33NG F ELJRE 82NG F ELJRE 27NG F ELJRE 22NG F 0 20 1 0 4TL 15N MLF2012A 4R7K T ELJRE 82NG F ELJRE 22NG F ELJRE 33NG F LQN21A 8N2D04 LQN21A 8N2D04 ELJRE 68NG F S Surface mount RF UNIT ORDER E E smo 6200005690 6200005690 6200003640 7030003430 7030003670 7030003470 7030003450 7030003680 7030003520 7030003280 7030003550 7030003440 7030003260 7030003400 7030003620 7030003640 7030003350 7030003620 7030003620 7030003540 7030003550 7030003420 7030003640 7030003360 7030003600 7030003520 7310003630 7030003770 7030003410 7030003680 7510000930 7030003580 7030003580 7030003450 7030003520 7030003470 7030003680 7030003560 7030003230 7030003650 7030003500 7030003570 7030003780 7030003750 7030003510 7030003610 7030003560 7030003550 7030003780 7030003750 7030003560 7030003510 7030003560 7030003300 7030003560 7030003200 7030003540 7030003440 7510001180 7310003610 7030003440 7030003440 7030003360 7030003350 7030003250 7030003350 7030003360 7030003440 7030003570 4030006860 4030008920 4030008920 4030006850 4030006850 S COIL S COIL S COIL S RESISTOR S RESI
21. Measuring range 1 mW 1W Frequency range 0 1 600 MHz HF power meter Frequency range 300 600 MHz Output level 0 1 uV 32 mV terminated type Impedance 50 Q 127 to 17 dBm SWR Less than 1 2 1 Standard signal generator SSG Frequency range 06 20 MHz Frequency range 0 1 600 MHz Measuring range 0 01 10 V Frequency counter Frequency accuracy 1 ppm or better mr Sensitivity 100 mV or better AC millivoltmeter Measuring range 10 mV 10 V I Input impedance 809 M Frequency range 30 600 MHz External speaker Measuring range 0 to 10 kHz Capacity 300 mW or more Att nustor Power attenuation 30 or 40 dB DC voltmeter Input impedance 50 KQ V DC or better Capacity 4 W or more ENTERING THE ADJUSTMENT MODE Turn the transceiver power OFF While connecting the TEST on the RF board to GND then turn power ON See location at page 5 3 Oscilloscope CONNECTIONS CAUTION Standard signal DO NOT transmit while SSG is Ho 2 connected to the antenna connector 17 to 125 dBm 32 mV to 0 1 uV FM deviation Attenuator meter 30 dB or 40 dB RF power meter 50 Q 1 500 mW Frequency counter to the RF test port 1 DC power supply 4 5V 1 0A 5 2 ADJUSTMENT MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION UNIT REFERENCE 1 Operating channel Ch 5 Loosely couple a fre 433 925000
22. N pe 1st IF 21 7 MHz from Q1 SQL signal to the CPU pin 59 OR 3 4 1 6 SQUELCH CIRCUIT AND MAIN UNITS 1 NOISE SQUELCH The noise squelch circuit cuts out AF signals when no RF sig nals are received By detecting noise components in the AF signals the squelch circuit switches the AF mute switch A portion of the AF signals from the FM IF IC RF unit IC2 pin 9 are applied to the active filter section RF unit IC2 pin 8 The active filter section amplifies and filters noise compo nenis The filtered signals are applied to the noise detector section and output from pin 14 as the SQL signal The SQL signal from IC2 pin 14 passes through J2 pin 9 and is then applied to the CPU MAIN unit IC1 pin 59 The CPU analyzes the noise condition and outputs the RMUT and AFON signals to toggle the volume mute MAIN unit Q23 and AF mute MAIN unit Q5 Q10 Q11 switches 2 TONE SQUELCH The tone squelch circuit detects AF signals and opens the squelch only when receiving a signal containing a matching subaudible tone CTCSS When tone squelch is in use and a signal with a mismatched or no subaudible tone is received the tone squelch circuit mutes the AF signals even when noise squelch is open A portion of the AF signals from the FM IF IC RF unit IC2 pin 9 passes through the tone low pass filter MAIN unit Q7 Q12 to remove AF voice signals and is applied to the CTCSS decoder inside th
23. O SERVICE MANUAL UHF FM TRANSCEIVER IC 4008A LPD FM TRANSCEIVER IC 4008MKII Icom Inc INTRODUCTION This service manual describes the latest service information for the IC 4008A IC 4008MKI at the time of publication Italy C S America YELLOW To upgrade quality all electrical or mechanical parts and internal circuits are subject to change without notice or oblig ation DANGER NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 5 V Such a connection could cause a fire hazard and or electric DO NOT expose the transceiver to rain snow or any liquids DO NOT reverse the polarities of the power supply when connecting the transceiver DO NOT apply an RF signal of more than 20 dBm 100mW to the antenna connector This could damage the trans ceiver s front end ORDERING PARTS Be sure to include the following four points when ordering replacement parts 1 10 digit order numbers 2 Component part number and name 3 Equipment model name and unit name 4 Quantity required lt SAMPLE ORDER gt 0910049951 PCB B 5109B IC 4008A MAIN UNIT 5 pieces 8810009780 Screw PH BO M2x6 ZK IC 4008A Chassis 10 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTES Make sure a problem is internal before disassembling the transceiver DO NOT open the transceiver until the transceiver is disconnected from its power sou
24. Regurator Q18 2SA1586 e RF UNIT TOP VIEW BOTTOM VIEW FM IF IC mz IC2 TA31136FN Reference oscilletor rit 1st mixer a 15 IF filter Q2 25 4226 A u PLL IC FI2 FL 298 sa 151 IF amplifier VCO circuit q Ba ka Q1 2SC4215 RF amplifier 2nd IF filter Q3 25C5194 FI3 CFWM450E SECTION 3 DISASEMBLY INSTRUCTIONS e REMOVING THE REAR PANEL e REMOVING THE MAIN UNIT D Unscrew 1 screw A and 4 screws D Unscrew 2 screws 2 Remove the rear panel in the direction of the arrow 2 Remove the PTT rubber Unsolder 2 points and remove the MAIN unit e REMOVING THE RF UNIT D Remove 1 knob and unscrew 1 nut 2 Unsolder 1 point and then remove the RF unit RF unit MAIN unit amp pcz u 2 yo 524 4 Q SECTION 4 CIRCUIT DESCRIPTION 4 1 RECEIVER CIRCUITS 4 1 1 ANTENNA SWITCHING CIRCUIT RF UNIT Received signals from the antenna connector are passed through the low pass filter L5 L6 8 12 The filtered sig nals are applied to the A4 type antenna switching circuit D7 D101 D102 L4 L206 C209 C210 The antenna switching circuit functions as a low pass filter while receiving However its impedance becomes very high while D101 and D102 are turned ON while transmitting Thus transmit signals are blocked from entering the receiver circuits The passed signals are then app
25. STOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S TRIMMER S RESISTOR S RESISTOR S RESISTOR S THERMISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S THERMISTOR S TRIMMER S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S CERAMIC S CERAMIC S CERAMIC S CERAMIC S CERAMIC ELJRE 18NG F ELJRE 18NG F MLF1608K 100K T ERJ3GEYJ 821 V 820 Q ERJ3GEYJ 823 V 82 KQ ERJ3GEYJ 182 V 1 8 ERJ3GEYJ 122 V 1 2 ERJ3GEYJ 104 V 100 ERJ3GEYJ 472 V 4 7 ERJ3GEYJ 470 V 47 Q ERJ3GEYJ 822 V 8 2 ERJ3GEYJ 102 V 1 ERJ3GEYJ 330 V 33 ERJ3GEYJ 471 V 470 Q ERJ3GEYJ 333 V 33 ERJ3GEYJ 181 V 180 Q ERJ3GEYJ 333 V 33 ERJ3GEYJ 333 V 33 ERJ3GEYJ 682 V 6 8 ERJ3GEYJ 822 V 8 2 ERJ3GEYJ 681 V 680 Q ERJ3GEYJ 473 V 47 ERJ3GEYJ 221 V 220 ERJ3GEYJ 223 V 22 KQ ERJ3GEYJ 472 V 4 7 EVM 1XSX50 BQ4 473 ERJ3GEYJ 564 V 560 kQ
26. TOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR S RESISTOR UMZIN TR CSA CSA 1 only 155355 7 155355 7 155355 TE 17 CSA CSA 1 MA2S111 TX ITA ITA 1 155355 TE 17 CSA CSA 1 MA2S111 TX ITA ITA 1 MA2S111 TX ITA ITA 1 only CR 627 5 8368 MHz ERJ3GEYJ 823 V 82 ERJ3GEYJ 823 V 82 ERJ3GEYJ 125 V 1 2 MQ ERJ3GEYJ 184 V 180 kQ ERJ3GEYJ 122 V 1 2 kQ ERJ3GEYJ 104 V 100 kQ ERJ3GEYJ 820 V 82 Q ERJ3GEYJ 100 V 10 Q ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 332 V 3 3 kQ ERJ3GEYJ 333 V 33 ERJ3GEYJ 153 V 15 ERJ3GEYJ 155 V 1 5 MQ ERJ3GEYJ 123 V 12 kQ ERJ3GEYJ 103 V 10 ERJ3GEYJ 101 V 100 ERJ3GEYJ 683 V 68 ERJ3GEYJ 105 V 1 ERJ3GEYJ 684 V 680 ERJ3GEYJ 682 V 6 8 kQ ERJ3GEYJ 682 V 6 8 ERJ3GEYJ 562 V 5 6 ERJ3GEYJ 103 V 10 kQ ERJ3GEYJ 223 V 22 kQ ERJ3GEYJ 223 V 22 ERJ3GEYJ 823 V 82 ERJ3GEYJ 473 V 47 kQ ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 392 V 3 9 ERJ3GEYJ 563 V 56 kQ ERJ3GEYJ 225 V 2 2 MQ ERJ3GEYJ 101 V 100 ERJ3GEYJ 101 V 100 ERJ3GEYJ 472 V 4 7 kQ ERJ3GEYJ 474 V 470 030003720 7030003680 7030003560 7030003680 7030003800 7030003680 7030003440 7030003440 7030003720 7030003520 7030003680 7030003680 70300
27. Z 100 k 100k SQL OPEN SQL CLOSE LIGHT ON LIGHT OFF J4 4 175638 4 to RF unit J2 PTT MOD POWER DOWN Q1 DTA144EU 21 Q2 Q3 R10 UN9215 UN5119 82 IC2a C7 C81 NJM2100M 01 470P C6 aik Q6 C4 1 0 1 pi 21 IC2b NE 2SK1829 NJM2100M 0 R51 R52 C85 118 470k 330k SI POO INT4 8 N P53 040 R38 28C4081 R43 P52 R105 san 0 0047 68 p C31 C32 IC1 VSS 56k 4 7 k 3 9 k TO RF unit 3 cl SO 0 RESET 72 RESET erre SC 277 42 R106 C 1 65 EEPCK 73 Q23 EEPDA 74 1074 21 15 P61 KR1 P40 R64 W6 0 1 224 0 1 75 p62 KR2 28 18 oe 57 R 0 86 a RXV 76 P63 KR3 VICI 0 047 15k L R88 77 esc P70 KR4 VICO Bas 470 P Er C27 3 SO 4 C9 C42 lig P 1 0 01 J1 HSJ 1102 01 540 5 pust ETE MC1 KUC3523 IC3 X24C01AS Q29 DTC114EU 3 POWER 51 PDA I T P23 BUZ P83 AN7 P82 AN6 P22 PCL PTO2 P31 SYNC P30 LCDCL P21 PTO1 P20 PTOO P12 TNT2 P11 TNT1 P10 TNTO m e e e a 02 50 5 0 R22 33 k BEEP BIAS COM3 COM2 COMI COMO 8 Q12 7 1M 470 P 25 4081 b k MICSW 79 p72 KR6 MMUTE 80 p73 KR7 24 23 LON 0 LOF 3 02 Q14 DTA114EU 5 5 R66 m nn st o AFON
28. e CPU MAIN unit IC1 pin 58 via the CTCIN line to control the volume mute and AF mute switches 4 2 TRANSMITTER CIRCUITS 4 2 1 MICROPHONE AMPLIFIER CIRCUIT MAIN UNIT AF signals from the internal external microphone are applied to the microphone amplifier circuit IC2b via the microphone switch Q6 The amplified signals are passed through the low pass filter IC2a and applied to the modulation circuit in the RF unit via J4 pin 5 as the MOD signal 4 2 2 MODULATION CIRCUIT RF UNIT The filtered audio signals from J4 pin 5 On the MAIN unit are passed through the deviation adjustment pot R50 then applied to the modulation circuit D4 D5 to modulate trans mit signals at the VCO circuit Q6 The modulated signal is applied to the drive amplifier circuit e PLL circuit e vco Buffer to the FM IF IC IC2 pin 1 11 21 25 MHz Programmable Prescaler counter i 4 2 3 DRIVE POWER ANPLIFIER CIRCUITS RF UNIT The amplifier circuit amplifies the VCO oscillating signal to the output power level The amplified transmit signal is passed through the antenna switching circuit D6 and low pass filter and is then applied to the antenna The modulated transmit signal is amplified at the pre drive and drive amplifiers Q8 Q201 after being amplified at the buffer amplifier Q7 The amplified signal is power amplified at the powe
29. ins stable receiver gain The 1st IF signal from the IF amplifier Q1 is applied to the 2nd mixer section in the FM IF IC IC2 pin 16 and is mixed with the 2nd LO signal to be converted into a 450 kHz 2nd IF signal The FM IF IC contains a 2nd mixer quadrature detector noise amplifier and a limiter amplifier etc The PLL reference oscillator X1 is used for the 2nd LO signal via the PLL IC IC1 pins 11 9 and is applied to pin 1 of the FM IF IC IC2 The mixed 2nd IF signal is output from pin 3 and passed through the ceramic bandpass filter FI3 to remove unwant ed heterodyne frequencies It is then amplified at the limiter amplifier section IC2 pin 5 and applied to the quadrature detector section IC2 pins 10 11 to demodulate the 2nd IF signal into AF signals 4 1 5 AF CIRCUIT RF AND MAIN UNITS AF signals from the FM IF IC RF unit IC2 pin 9 are passed through the high pass filter RF unit Q15 Q16 to remove CTCSS signals then applied to the MAIN unit via J2 pin 10 as the VOL signal The VOL signal AF signals from the RF unit is applied to the VOL control MAIN unit R58 to control the audio level via the volume mute switch Q23 The level controlled AF signals are applied to the AF power amplifier IC9 pin 2 to drive an internal speaker SP1 via the SP jack J1 2nd IF filter 0 kH 5 2 re 21 25 MHz i E 5 BEAN 3 1 1 1 je Z X1 29 21 25 MHz a d TE IC2 TA31136F
30. lied to the RF ampli fier circuit 4 1 2 RF CIRCUIT RF UNIT The RF circuit amplifies signals within the range of frequen cy coverage and filters out of band signals The signals from the antenna switching circuit are amplified at the RF amplifier Q3 and passed through the bandpass fil ter FI1 to suppress out of band signals The filtered signals are applied to the 1st mixer circuit Q2 4 1 3 1st MIXER AND 1st IF CIRCUITS RF UNIT The 1st mixer circuit converts the received signals to a fixed frequency of the 1st IF signal with a PLL output frequency By changing the PLL frequency only desired signals will be passed through a crystal filter at the next stage of the 1st mixer The signals from the bandpass filter are mixed at the 1st mixer circuit Q2 with a 1st LO signal coming from the VCO circuit to produce a 21 7 MHz 1st IF signal The 1st IF signal is applied to a crystal filter FI2 to suppress out of band sig nals The filtered 1st IF signal is applied to the IF amplifier Q1 then applied to the 2nd mixer circuit IC2 pin 16 2nd IF AND DEMODULATOR CIRCUITS 2 Active filter C76 9 TO AF signal AF C77 R58 l Limiter amp FM detector 4 1 4 2nd MIXER AND DEMODULATOR CIRCUITS RF UNIT The 2nd mixer circuit converts the 151 IF signal to a 2nd IF signal A double conversion superheterodyne system which converts receive signals twice improves the image rejection ratio and obta
31. nected battery pack ignals for the PLL Common 3 V converted from the BATT line at 52 PLLST uU Noe e RF unit the 3V regulator circuit IC6 The circuit outputs Outputs control signal for the 3V reg POWER ulator circuit MAIN unit Q25 D4 CTCOO 54 56 CTCO Output port for the CTCSS signals the voltage regardless of the power ON OFF Outputs control signal for the MIC amplifier IC2 TXMOD Low While microphone amplifier is ON condition CTCIN nu port for the CTCSS decode sig SQLIN Input port for squelch level signal REMIN Input ports for the control signal from the external remote microphone BATIN Input port form the connected battery pack for low battery indication Input port for the RSSI signal from the SENIN FMIF IC RF unit IC2 to detect receiv ing signal strength level EEPCK Outputs clock signal to the EEPROM IC3 EEPDA o data signals to the EEPROM Output port for power save function PSC applied VCO regurator circuit RF unit Q13 Q14 D8 D9 Outputs the R 3 regulator control sig nal Q18 Receive 3 V cotrolled by the R 3 regulator circuit Q18 using the RXV signal from CPU IC1 Transmit 3 V converted from the BATT line at the T 3 regulator circuit Q27 Q28 D5 etc using the TXV signal coming from CPU IC1 Common 3 V converted from the BATT line at the 3V regulator circuit Q25 D4 4 5 PORT ALLOCATIONS 4 5 1 CPU MAIN unit I
32. r ITA CSA 8110006720 Cover 2045 Rear Cover A ITA 1 CSA 1 8110006410 Cover 2045 Lock Cover ITA CSA 8110006730 Cover 2045 Lock Cover A ITA 1 CSA 1 8310042680 Plate 2045 Window Plate 8210015220 Panel 2045 Reflector 8610010570 Knob N 265 8930045192 Seal 2045 Top Seal 2 8930045230 Key 2045 4 Key 8930045200 Button 2045 PTT Button 8930046990 Seal 2045 Main Seal A 8930045220 Seal 2045 BATT Seal 8930046280 Terminal 2045 ANT Termainal 8830001370 Screw 2045 VR Nut 8930045750 Seal O ring X 8830000110 Screw Nut M4 8810009560 Screw PH BO 2x6 ZK BT 8810008640 Screw FH BO 2x4 NI ZU BT 8810008990 Screw PH BO 2x10 ZK BT MAIN UNIT REF NO ORDER NO DESCRIPTION QTY 5030001580 LCD LD BU10185J 1 8930045510 LCD contact SRCN 2045 SP N W 1 RF UNIT REF NO ORDER NO DESCRIPTION QTY 8510011570 Case 2045 VCO Case Screw abbreviations Self tapping PH Pan head FH Flat head BiH Bind head NI Nickel SUS Stainless ZK Black 7 2 ACCESSORIES 1 2 ORDER DESCRIPTION 8930045331 2045 Belt clip 1 1 8820001040 2045 Screw 1 MP3 10 MP24 MP2 MAIN unit UNIT abbreviation C CHASSIS PARTS RF RF UNIT M MAIN UNIT SECTION 8 SEMI CONDUCTOR INFORMATION TRANSISTOR AND FET S 25 1362 GR Symbol AEG B E 2504213 Symbol AB i 24 Symbol T88
33. r amplifier Q202 to obtain 500 mW or IC 4008A 10 mW IC 4008MK2 of RF power The power amplified signal is then applied to the antenna via the low pass filter circuits 4 3 PLL CIRCUITS RF UNIT A PLL circuit provides stable oscillation of the transmit fre quency and receive 1st LO frequency The PLL output com pares the phase of the divided VCO frequency to the refer ence frequency The PLL output frequency is controlled by the divided ratio N data of a programmable divider The PLL circuit consists of the VCO circuit Q6 D4 D5 An oscillated signal from the VCO passes through the buffer amplifier Q7 is applied to the PLL IC IC1 pin16 and is prescaled in the PLL IC based on the divided ratio N data The reference signal is generated at the reference oscillator X1 and is also applied to the PLL IC The PLL IC detects the out of step phase using the reference frequency and outputs it from pin 14 The output signal is passed through the loop filter R45 C68 and is then applied to the VCO circuit as the lock voltage If the oscillated signal drifts its phase changes from that of the reference frequency causing a lock voltage change to compensate for the drift in the oscillated frequency D2 to transmitter circuit to 151 mixer circuit IC1 PLL IC 4 4 POWER SUPPLY CIRCUITS Port VOLTAGE LINE name Description LINE DESCRIPTION PLLDA E signals to the PLL IC RF BATT The voltage from the con
34. rce DO NOT force any of the variable components Turn them slowly and smoothly DO NOT short any circuits or electronic parts An insulated turning tool MUST be used for all adjustments DO NOT keep power ON for a long time when the transceiver is defective DO NOT transmit power into a signal generator or a sweep generator ALWAYS connect a 30 dB to 40 dB attenuator between the transceiver and a deviation meter or spectrum analyzer when using such test equipment READ the instructions of test equipment thoroughly before connecting equipment to the transceiver t SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION SECTION 4 N R 4 1 4 2 4 3 4 4 4 5 5 1 5 2 7 1 7 2 6 9 9 1 9 2 10 11 11 1 11 2 TABLE OF CONTENTS PECIFICATIONS NSIDE VIEWS ISASEMBLY INSTRUCTION IRCUIT DESCRIPTIO ARTS LIS m I gt gt U gt gt 0 gt 2 U gt 0 m a r EMI CONDUCTOR INFORMATIO OARD LAYOUTS SECTION 1 SPECIFICATIONS mama 69 channel simplex 433 075 434 775 l 3 x AA R6 dry alkaline or optional BP 202 55 5 W x 102 5 H x 26 5 D mm proj not included 2346 W x 4132 H x 1182 D inch Weight included 3 cells included 3 cells 180 g 7 8 oz Modulation system Variable reactance frequency modulation Max freqequency deviation 5

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