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SERVICE

MANUAL

VHF FM TRANSCEIVER

iF310

iF310S

iF320

iF320S

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Summary of Contents for IC-F310

Page 1: ...SERVICE MANUAL VHF FM TRANSCEIVER iF310 iF310S iF320 iF320S...

Page 2: ...and name 3 Equipment model name and unit name 4 Quantity required SAMPLE ORDER 1150001930 IC SC 1364 IC F310 MAIN UNIT 5 pieces 8810005840 Screw PH BT M3 x 8 NI ZU IC F310 Bottom cover 10 pieces Addre...

Page 3: ...R CIRCUITS 4 1 4 2 TRANSMITTER CIRCUITS 4 2 4 3 PLL CIRCUITS 4 3 4 4 POWER SUPPLY CIRCUITS 4 4 4 5 PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 3 5 3 T...

Page 4: ...136 155 MHz 146 174 MHz F310 32 16 ch 2 banks F320 32 16 ch 2 banks F310S 8 ch or 4 ch 2 banks F320S 4 ch 16K0F3E 25 kHz Wide 8K50F3E 12 5 kHz Narrow 1500 Hz 0 0005 20 C to 55 C 30 C to 60 C 22 F to...

Page 5: ...Located under side of the point I O expander IC11 BU4094BCFV VCO circuit 1st IF filter FI1 FL 285 Discriminator X3 CDBCA450CX24 FM IF IC IC3 TA31136FN RF amplifier Q12 35K239 AF switching IC IC4 BU406...

Page 6: ...w 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...

Page 7: ...to a fixed 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 1...

Page 8: ...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 AF amplifier IC7a passes through...

Page 9: ...s mismatched the detected voltage exceeds the power setting voltage The output voltage of the inverse amplifier IC6c pin 8 controls the input current of the power module IC1 and drive amplifier Q1 to...

Page 10: ...Low External dimmer switch is ON Outputs strobe signals for the PLL IC MAIN unit IC2 Outputs strobe signals for the level controller IC MAIN unit IC5 Outputs strobe signals for the I O expander IC MA...

Page 11: ...Q19 Q23 control signal High While Tx is muted Outputs AF mute switch MAIN unit IC4 control signal for the receiver cir cuit High While no receive audio is emit ed Outputs MIC mute control signal High...

Page 12: ...hich has been repaired then write the data to the transceiver EQUIPMENT DC power supply RF power meter terminated type Frequency counter FM deviation meter DC voltmeter GRADE AND RANGE Output voltage...

Page 13: ...rnal 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 f...

Page 14: ...g Receiving Operating frequency Ch 2 136 00000 MHz L band 146 00000 MHz H band Transmitting Receiving MAIN Connect a digital multi meter or oscil loscope to the check point CP1 3 5 V L band 4 0 V H ba...

Page 15: ...0 W PMR 10 0 W Italy 25 0 W LMR 10 0 W PMR 5 0 W Italy 4 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 frequency Ch 1 155 00000 MHz L...

Page 16: ...t as Level 3 2 V 97 dBm Modulation 1 kHz Deviation 3 5 kHz Wide 1 75 kHz Narrow Receiving 5 5 ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT VALUE UNIT LOCATION TRIMMER ADJUSTMENT continued Select an ope...

Page 17: ...5 6 DC power supply 13 2 13 6 V 15 A AC millivoltmeter Speaker 4 SINAD meter Audio generator MAIN unit FRONT unit R60 Beep level adjustment J2 pin 25 Audio input point 1 15 16 30 25 J2...

Page 18: ...68 k R34 7030003610 S RESISTOR ERJ3GEYJ 273 V 27 k R35 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 k R36 7030003570 S RESISTOR ERJ3GEYJ 123 V 12 k R37 7030003570 S RESISTOR ERJ3GEYJ 123 V 12 k S Surface m...

Page 19: ...IC C1608 JB 1H 471K T A C32 4030006860 S CERAMIC C1608 JB 1H 102K T A C33 4030006860 S CERAMIC C1608 JB 1H 102K T A C34 4030007090 S CERAMIC C1608 CH 1H 470J T A C35 4030006860 S CERAMIC C1608 JB 1H 1...

Page 20: ...VU350TRF D19 1720000370 S VARICAP HVU350TRF D20 1720000370 S VARICAP HVU350TRF D21 1720000370 S VARICAP HVU350TRF D22 1160000060 S DIODE DAN202U T107 D23 1160000060 S DIODE DAN202U T107 D24 1790001280...

Page 21: ...OR ERJ3GEYJ 103 V 10 k R110 7030003640 S RESISTOR ERJ3GEYJ 473 V 47 k R111 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 R112 7030003320 S RESISTOR ERJ3GEYJ 101 V 100 R113 7030003510 S RESISTOR ERJ3GEYJ 39...

Page 22: ...ERAMIC GRM42 6 CH 150J 500PT C13 4030011220 S CERAMIC GRM42 6 CH 360J 500PT L band 4030011210 S CERAMIC GRM42 6 CH 330J 500PT H band 4030011170 S CERAMIC GRM42 6 CH 180J 500PT C15 4030011260 S CERAMIC...

Page 23: ...39 4030007170 S CERAMIC C1608 CH 1H 221J T A C140 4030007010 S CERAMIC C1608 CH 1H 100D T A C141 4030007040 S CERAMIC C1608 CH 1H 180J T A C142 4030009910 S CERAMIC C1608 CH 1H 040B T A C143 403000702...

Page 24: ...90 S CERAMIC C1608 CH 1H 470J T A C263 4030007090 S CERAMIC C1608 CH 1H 470J T A C264 4030007090 S CERAMIC C1608 CH 1H 470J T A C265 4030007090 S CERAMIC C1608 CH 1H 470J T A C266 4030007090 S CERAMIC...

Page 25: ...1 8600036040 P1CH 1 MAIN UNIT REF NO ORDER NO DESCRIPTION QTY J5 6450000140 Connector HSJ0807 01 010 1 W7 8900004540 Cable OPC 453 1 MP1 8510011111 1922 VCO case 1 1 MP2 8510011101 1922 VCO cover 1 1...

Page 26: ...M MP2 M MP13 C MP13 C MP7 C MP5 M MP6 C MP7 C MP11 C MP12 C W7 M J5 M MP6 C MAIN UNIT Bottom side MP3 M MP7 C J1 C MP9 C SP1 C MP8 C MP7 C MP4 C WS1 C MP1 F MP2 F TX RX 1 2 3 4 S LCD type only IC F310...

Page 27: ...l DA 2SJ144 Y Symbol VY S D G 2SK880 Y Symbol XY DTA143ZU Symbol 113 DTA144EU Symbol 16 DTC144EU Symbol 26 DTC144TU Symbol 06 DTC144WU Symbol 86 DTC363EK Symbol H27 XP4601 Symbol 5C XP6501 Symbol 5N E...

Page 28: ...9 1 SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT IC F310 F320 TOP VIEW 8V 1 7 2 8 AFO MICE GND CLONE PTT MIC HANGER to Microphone J1...

Page 29: ...O SI OPT3 OPT2 OPT1 OPV3 OPV2 OPV1 PTT PTTIN DET PWON EXPTT DIMIN SO SCK SD LVIN GND to MAIN unit J1 J2 8V CPU5V GND OPINT OPCS BUSY BEEPOUT TONE BEEP DTCSIN RFATT NOIS UNLK EXEN EXST DAST PLST VIN TE...

Page 30: ...9 3 9 2 FRONT UNIT IC F310S F320S TOP VIEW 8V 1 7 2 8 AFO MICE GND CLONE PTT MIC HANGER to Microphone J1...

Page 31: ...O SI OPT3 OPT2 OPT1 OPV3 OPV2 OPV1 PTT PTTIN DET PWON EXPTT DIMIN SO SCK SD LVIN GND to MAIN unit J1 J2 8V CPU5V GND OPINT OPCS BUSY BEEPOUT TONE BEEP DTCSIN RFATT NOIS UNLK EXEN EXST DAST PLST VIN TE...

Page 32: ...N TEMP MIC J1 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 OPV2 OPV1 J2 1 15 to...

Page 33: ...9 6 BOTTOM VIEW SP...

Page 34: ...T PLST VIN TEMP MIC J1 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 OPV2 OPV1 J...

Page 35: ...9 8 BOTTOM VIEW SP...

Page 36: ...15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 GND 5V HV MICMUTE BEEPOUT RXMUT DET AFOUT OPCS OPINT SO SI SCK MICOUT MICIN BUSY SIGOUT OPT1 OPT2 OPT3 OPV3 OPV2 OPV1 J2 OPT X X EXTONE IN PTTOUT PTTIN...

Page 37: ...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 38: ...VIN7 GND RESET VDAREF DO VIN6 VOUT6 VOUT5 VIN5 IC5 M62363FP 650C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 C176 0 01 R140 100 C177 0 01 C178 0 001 DAST SCK SO C179 0 001 C180 0 0...

Page 39: ...L band 18p LMR 20p PMR H band 22p PMR L band C20 C275 47p C274 470p C273 0 001 C272 0 001 C271 0 001 C297 470 C280 47p C279 470p C278 0 001 C277 0 001 C276 6 8 L4 LW 25 R6 22 C16 470p C17 0 001 R7 33...

Page 40: ...87 100p R234 100k D31 DA204U R178 33k IC7a NJM2902V IC7d NJM2902V R238 18k 8V CPU5V GND OPINT OPCS BUSY BEEPOUT TONE BEEP DTCS RFATT NOIS UNLK EXEN EXST DAST PLST VIN TEMP MIC 5V AFO SI OPT3 OPT2 OPT1...

Page 41: ...155 Fax 425 454 1509 URL http www icomamerica com Customer Service Phone 425 454 7619 Glenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 604 952 4266 Fax 604 952 0090 URL http www icom...

Page 42: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan A 5560SZ SV q 1999 Icom Inc...

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