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SERVICE

MANUAL

UHF FM TRANSCEIVER

iF410

iF410S

iF420

iF420S

6-9-16, Kamihigashi, Hirano-ku Osaka 547-0002, Japan

A-5560SI-SU

© 1999 by Icom Inc.

iF410

iF410S

iF420

iF420S

Cover420s 99.2.17 10:40 AM Page 1

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Summary of Contents for IC-F410

Page 1: ...SERVICE MANUAL UHF FM TRANSCEIVER iF410 iF410S iF420 iF420S iF410 iF410S iF420 iF420S...

Page 2: ...numbers 2 Component part number and name 3 Equipment model name and unit name 4 Quantity required SAMPLE ORDER 1150001670 IC SC 1322 IC F410 MAIN UNIT 5 pieces 8810005840 Screw PH BT M3 x 8 NI ZU IC...

Page 3: ...EMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT IC F410 F420 9 1 9 2 FRONT UNIT IC F410S F420S 9 3 9 3 MAIN UNIT 9 5 SECTION 10 BLOCK DIAGRAM SECTION 11 VOLTAGE DIAGRAM 11 1 FRONT UNI...

Page 4: ...470 MHz 470 490 MHz 470 490 MHz 490 520 MHz 490 512 MHz F410 32 16 ch 2 banks F420 32 16 ch 2 banks F410S 8 ch or 4 ch 2 banks F420S 4 ch 16K0F3E 25 kHz Wide 8K50F3E 12 5 kHz Narrow 1500 Hz 0 0005 20...

Page 5: ...U4066BCF VCO circuit 2nd IF filter FI2 2nd IF filter FI3 1st mixer Q3 3SK241 1st IF filter FI1 FM IF IC IC1 TA31136FN Discriminator X1 CDBCA450CX24 High pass filter IC6 NJM2902M Level controller IC12...

Page 6: ...2 screws B and remove the front case 3 Unscrew 10 screws C and remove 2 clips D 4 Remove shield case E 5 Unsolder 3 points F from the antenna connector 6 Lift the front portion of the main unit and r...

Page 7: ...xed frequency of the 1st IF signal with the PLL output frequency By changing the PLL frequency only the desired frequency will pass through a pair of crystal filters at the next stage of the 1st mixer...

Page 8: ...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 AF amplifier IC7b passes through the l...

Page 9: ...he power setting voltage The output voltage of the inverse amplifier IC4b pin 7 controls the input current of the power module IC5 and drive amplifier Q19 to reduce the output power via the APC contro...

Page 10: ...switch is ON Outputs strobe signals for the PLL IC MAIN unit IC10 Outputs strobe signals for the level controller IC MAIN unit IC12 Outputs strobe signals for the I O expander IC MAIN unit IC13 Outpu...

Page 11: ...circuits MAIN unit Q8 Q9 High While Tx is muted Outputs AF mute switch MAIN unit IC11 control signal for the receiver cir cuit High While no receive audio is emit ed Outputs MIC mute control signal H...

Page 12: ...IPMENT DC power supply RF power meter terminated type Frequency counter FM deviation meter DC voltmeter GRADE AND RANGE Output voltage 13 2 13 6 V DC Current capacity 15 A or more Measuring range 1 50...

Page 13: ...l temperature Operating channel RF output power FM deviation Receive sensitivity Reference frequency Connected DC voltage SQL level DTCS balance level Volume Squelch DTCS balance The above values for...

Page 14: ...eiving Power selection Low1 Transmitting Operating frequency Ch2 L band 430 00000 MHz ML band 470 00000 MHz MH band 490 00000 MHz H band 520 00000 MHz H band 512 00000 MHz Receiving Power selection Lo...

Page 15: ...0155 MHz H band 35 0 W LMR 25 0 W PMR 10 0 W Italy 20 0 W LMR 10 0 W PMR 5 0 W Italy 3 5 W LMR 2 5 W PMR Italy 4 2 kHz Wide 2 1 kHz Narrow NOTE Wide Narrow ver sion must adjust both setting Operating...

Page 16: ...0000 MHz MH band 470 00000 MHz H band 490 00000 MHz Power selection Low1 No audio signal is applied to the MIC jack DTCS code 007 Set an FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detect...

Page 17: ...udio generator to pin 25 MAIN unit J2 and set as 1 kHz 550 mV Squelch OPEN Volume level 1 Receiving Rear panel Connect an AC mil livoltmeter with 4 load to the SP jack 62 5 mV FRONT R60 DC power suppl...

Page 18: ...40 S RESISTOR ERJ3GEYJ 334 V 330 k R43 7030003570 S RESISTOR ERJ3GEYJ 123 V 12 k R44 7410000950 S ARRAY EXB V8V 102JV R45 7410000950 S ARRAY EXB V8V 102JV R46 7410000950 S ARRAY EXB V8V 102JV R47 7410...

Page 19: ...H 1H 470J T A C61 4030007090 S CERAMIC C1608 CH 1H 470J T A C62 4030007090 S CERAMIC C1608 CH 1H 470J T A C63 4030007090 S CERAMIC C1608 CH 1H 470J T A C64 4030007090 S CERAMIC C1608 CH 1H 470J T A C6...

Page 20: ...370 S VARICAP HVU350TRF D8 1720000370 S VARICAP HVU350TRF D9 1720000370 S VARICAP HVU350TRF D10 1720000370 S VARICAP HVU350TRF D12 1160000060 S DIODE DAN202U T107 D13 1160000060 S DIODE DAN202U T107 D...

Page 21: ...3520 S RESISTOR ERJ3GEYJ 472 V 4 7 k R82 7030003490 S RESISTOR ERJ3GEYJ 272 V 2 7 k R83 7030003520 S RESISTOR ERJ3GEYJ 472 V 4 7 k R84 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R85 7030003560 S RESISTO...

Page 22: ...V 1 k R245 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R246 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R247 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R248 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R249 7030...

Page 23: ...H 1H 470J T A C71 4510004630 S ELECTROLYTIC ECEV1CA100SR C72 4550006450 S TANTALUM ECST1EY105R C73 4030004760 S CERAMIC C2012 JF 1E 104Z T A C74 4510005290 S ELECTROLYTIC ECEV1EA221P C75 4510004630 S...

Page 24: ...CERAMIC C1608 JB 1C 123K T A C193 4030011600 S CERAMIC C1608 JB 1C 104KT N C194 4510005290 S ELECTROLYTIC ECEV1EA221P C195 4510006260 S ELECTROLYTIC ECEV1AA471UP C196 4030006860 S CERAMIC C1608 JB 1H...

Page 25: ...A C322 4030009660 S CERAMIC C1608 JF 1C 224Z T A C323 4030007010 S CERAMIC C1608 CH 1H 100D T A C324 4030007090 S CERAMIC C1608 CH 1H 470J T A C325 4030007090 S CERAMIC C1608 CH 1H 470J T A C326 4030...

Page 26: ...over 1 MP16 8930048870 2056 A Sponge H band only 1 MP17 8510002280 VCO cover H band only 1 MP18 8930048870 2056 A Sponge H band only 1 CHASSIS PARTS ORDER NO DESCRIPTION QTY J1 6510004880 Connector MR...

Page 27: ...P12 M MP5 M MP15 M MP16 M MP13 M MP6 M MP11 M MAIN UNIT Bottom side MP3 M MP7 C J1 C MP9 C SP1 C MP8 C MP7 C MP7 M MP14 M MP2 C WS1 C MP2 F DS1 F EP2 F MP1 F MP1 F MP2 F TX R X 1 2 3 4 S LCD type only...

Page 28: ...Symbol K 2SK536 Symbol BJ 2SK880 GR Symbol XG DTA143ZU Symbol 113 DTA144EU Symbol 16 DTC114EU Symbol 24 DTC144EU Symbol 26 DTC144TU Symbol 06 DTC363EK Symbol H27 XP4601 Symbol 5C XP6501 Symbol 5N E C...

Page 29: ...9 1 SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT IC F410 F420 TOP VIEW 8V 1 7 2 8 AFO MICE GND CLONE PTT MIC HANGER to Microphone J1...

Page 30: ...O SI OPT3 OPT2 OPT1 OPV3 OPV2 OPV1 PTT PTTIN DET PWON EXPTT DIMIN SO SCK SD LVIN GND to MAIN unit J3 J2 8V CPU5V GND OPINT OPCS BUSY BEEPOUT TONE BEEP DTCSIN RFATT NOIS UNLK EXEN EXST DAST PLST VIN TE...

Page 31: ...9 3 9 2 FRONT UNIT IC F410S F420S TOP VIEW 8V 1 7 2 8 AFO MICE GND CLONE PTT MIC HANGER to Microphone J1...

Page 32: ...O SI OPT3 OPT2 OPT1 OPV3 OPV2 OPV1 PTT PTTIN DET PWON EXPTT DIMIN SO SCK SD LVIN GND to MAIN unit J3 J2 8V CPU5V GND OPINT OPCS BUSY BEEPOUT TONE BEEP DTCSIN RFATT NOIS UNLK EXEN EXST DAST PLST VIN TE...

Page 33: ...EN EXST DAST PLST VIN TEMP MIC J3 2 40 to FRONT unit 1 39 GND 5V HV MICMUTE AFONOP BEEPOUT RXMUTE DET AFOUT NC OPCS OPINT SO SI SCK PTTIN PTTOUT MICOUT MICIN NC BUSY NC SIGOUT OPT1 OPT2 OPT3 GND OPV3...

Page 34: ...9 6 BOTTOM VIEW SP...

Page 35: ...12 Q13 T8V Q8 Q9 D14 CPU5V MMUT MIMUT MM RXMUT MMUT CTRL D25 Q46 TMUT COMMON LINE LINE RX LINE TX LINE DATA BUS LINE DIM HORN DISC HV AFO IN PTT DIM SW Q38 HORN SW Q39 1 2 3 4 5 6 7 8 9 10 11 J5 OPV1...

Page 36: ...DTC144EU Q19 R48 EXB V8V 1kx4 R46 EXB V8V 1kx4 MTONE DTMF OPV3 OPV2 OPV1 CTCIN SD LVIN TEMP VIN 8V KR0 KR1 KR2 KR3 R17 EXB V8V 1kx4 KS0 KS1 R19 470 R18 470 R59 1k C28 0 001 S6 C22 47p C23 47p C24 47p...

Page 37: ...258 47k C185 0 1 C186 0 1 8V 5V VCC R159 33k MICIN MICOUT A R265 8 2k Q46 DTA144EU R153 100k C334 47p 7 6 5 IC8b NJM2904M 4 8 C180 0 1 C351 0 047 C350 0 001 R152 R281 15k 5 6k R266 10k R150 100 C282 2...

Page 38: ...177 0 001 C178 47p R209 100k D27 MA111 VCON GND X2 CR 601 VCC OUT 1 2 4 3 R267 270k R186 100k C206 10 C212 4 7 R182 10 C211 0 1 C215 8p R184 2 7k C214 8p C208 0 0047 C209 0 001 C210 2 2 L34 18nH R191...

Page 39: ...6 82k R144 22k R145 75k C174 0 1 C175 0 1 C176 2 2 R141 10k R268 10k R269 39k R142 10k TONE DTCS C323 10p W13 W16 W15 W14 C173 12p L32 0 56 H C170 5p C171 4p C172 5p L33 0 56 H C169 12p R127 4 7k 1 3...

Page 40: ...france com Corporate Headquarters 2380 116th Avenue N E Bellevue WA 98004 U S A Phone 425 454 8155 Fax 425 454 1509 URL http www icomamerica com Customer Service Phone 425 454 7619 A C N 006 092 575...

Page 41: ...iF410 iF410S iF420 iF420S Cover420s 99 2 17 10 40 AM Page 1...

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