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SERVICE

MANUAL

UHF TRANSCEIVER

iF610

iF620

iF621

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Summary of Contents for IC-F620

Page 1: ...SERVICE MANUAL UHF TRANSCEIVER iF610 iF620 iF621...

Page 2: ...R 1110003490 S IC TA31136FN IC F610 MAIN UNIT 5 pieces 8810009990 Screw PH BT M3 8 ZK IC F620 Bottom cover 10 pieces Addresses are provided on the inside back cover for your convenience REPAIR NOTES 1...

Page 3: ...ON 5 1 5 2 PLL ADJUSTMENT 5 3 5 3 SOFTWARE ADJUSTMENT 5 4 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS SECTION 8 SEMI CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT 9 1 9 2 MAIN UNIT...

Page 4: ...440 000 490 000 MHz H band 480 000 512 000 MHz USA 480 000 520 000 MHz EUR GEN N W 8K50F3E 16K0F3E 12 5 kHz Narrow 25 kHz Wide N M 8K50F3E 14K0F3E 12 5 kHz Narrow 20 kHz Middle Max 256 ch 16 channels...

Page 5: ...IC10 AN78L05M VCO circuit CPU IC20 HD64F2268TF Antenna switch Low pass filter circuits 1st mixer Q3 3SK272 2nd IF filter FI2 ALFYM450F K FM IF IC IC1 TA31136FN D A converter IC6 M62364FP Referance cr...

Page 6: ...point D from the plate and remove the plate Unsolder 3 points E from the antenna connector Remove the clip F Disconnect the cable G from J5 Unscrew 11 screws H H G F D E J5 Lift up the front portion o...

Page 7: ...ixer circuit converts the received signals 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 MCF Mono...

Page 8: ...the CPU IC20 pin 46 via the CDEC line to control the AF mute switch 4 2 TRANSMITTER CIRCUIT 4 2 1 MICROPHONE AMPLIFIER CIRCUIT MAIN unit The microphone amplifier circuit amplifies audio signals withi...

Page 9: ...equency The PLL output frequency is controlled by the divided ratio N data of a programable divider The PLL circuit contains the TX RX VCO circuit Q14 Q13 The oscillated signal is amplified at the buf...

Page 10: ...ated Outputs IF bandwidth control signal High While IF bandwidth is narrow Input port for the data signals from the DTMF decoder IC19 Outputs clock signal to the DTMF decoder IC19 Outputs data signals...

Page 11: ...hing Input port for the connected modem unit via external connector J9 Output port for the connected modem unit via external connector J9 33 34 36 37 38 39 40 41 43 44 45 46 47 48 49 50 51 52 55 59 68...

Page 12: ...date condition t Set or modify adjustment data as desired 5 1 EQUIPMENT DC power supply RF power meter terminated type Frequency counter FM deviation meter DC voltmeter GRADE AND RANGE Output voltage...

Page 13: ...F T1 0 Enter to sweep BPF T2 0 Enter to sweep BPF T3 0 Enter to sweep BPF T4 0 Enter to sweep TXF Enter to start S METER Enter to start D A BPF T1 50 32h 0 98 V BPF T2 50 32h 0 98 V BPF T3 50 32h 0 98...

Page 14: ...000 MHz L 440 000 MHz M 480 000 MHz H Receiving Output power Low1 Transmitting Operating freq 430 000 MHz L 490 000 MHz M 520 000 MHz H Receiving Output power Low1 Transmitting MAIN Connect a digital...

Page 15: ...ating freq 415 000 MHz L 465 000 MHz M 500 000 MHz H Output power Low1 IF bandwidth Wide CTCSS 88 5 Hz DTCS code 007 Set the FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detector P P 2 No...

Page 16: ...set as Frequency 400 000 MHz L 440 000 MHz M 480 000 MHz H Level 14 V 84 dBm Modulation 1 kHz Deviation 3 5 kHz N W 2 8 kHz N M Receiving Set an SSG as Level 0 45 V 114 dBm Modulation 1 kHz Deviation...

Page 17: ...90 S CERAMIC C1608 CH 1H 470J T C9 4030007090 S CERAMIC C1608 CH 1H 470J T C10 4030007090 S CERAMIC C1608 CH 1H 470J T C11 4030007090 S CERAMIC C1608 CH 1H 470J T C12 4030007090 S CERAMIC C1608 CH 1H...

Page 18: ...790000660 S DIODE MA728 TX D2 1750000510 S DIODE UM9401F 25W D3 1710001060 DIODE XB15A407 45W D4 1750000710 S VARICAP HVC350BTRF D5 1750000760 S DIODE MA4PH224 D6 1790000620 S DIODE MA77 TX D8 1750000...

Page 19: ...OR ERJ3GEYJ 221 V 220 R77 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 k R78 7030003410 S RESISTOR ERJ3GEYJ 561 V 560 R79 7030003500 S RESISTOR ERJ3GEYJ 332 V 3 3 k R80 7030003440 S RESISTOR ERJ3GEYJ 102 V...

Page 20: ...SISTOR ERJ3GEYJ 471 V 470 R259 7030003530 S RESISTOR ERJ3GEYJ 562 V 5 6 k R260 7030003620 S RESISTOR ERJ3GEYJ 333 V 33 k R261 7030003620 S RESISTOR ERJ3GEYJ 333 V 33 k R262 7030003620 S RESISTOR ERJ3G...

Page 21: ...ROLYTIC ECEV1EA330SP L 4510005750 S ELECTROLYTIC ECEV1EA220SP M H C92 4030009920 S CERAMIC C1608 CH 1H 050B T C93 4030009910 S CERAMIC C1608 CH 1H 040B T 25W 4030009350 S CERAMIC C1608 CH 1H 3R5B T 45...

Page 22: ...600 S CERAMIC C1608 JB 1E 104K T C279 4030011600 S CERAMIC C1608 JB 1E 104K T C280 4510004650 S ELECTROLYTIC ECEV1EA4R7SR C281 4030011340 S CERAMIC C1608 CH 1H 471J T C282 4030011600 S CERAMIC C1608 J...

Page 23: ...C387 4030011600 S CERAMIC C1608 JB 1E 104K T C388 4030017490 S CERAMIC C1608 JB 1A 105K T C389 4510005630 S ELECTROLYTIC ECEV1EA330SP L 4510005750 S ELECTROLYTIC ECEV1EA220SP M H C390 4030007050 S CER...

Page 24: ...BT M2 8 NI ZU 4 MP13 8810009990 Screw PH BT M3 8 ZK 6 MP14 8930057890 Non woven sheet CF 1 MP15 8930057940 Shield sponge N EUR only 1 ACCESSORY PARTS F1 5210000120 Fuse FGB 15A 25W 2 5210000080 Fuse F...

Page 25: ...C MP13 C MP11 C MP5 M MP2 M MP3 M MP11 C MP6 M MP13 C MP9 C MP8 M W2 M J4 M MP14 M MP20 M MP1 M MAIN UNIT MP4 M MP13 M MP11 C J1 C MP7 C SP1 C MP8 C MP11 C Unit abbreviations F FRONT UNIT M MAIN UNIT...

Page 26: ...K880 Y 2SK1829 3SK272 3SK293 DTA144EUA T106 DTC144EUA T106 DTC363 EK XP1214 XP6501 AB Symbol BAR Symbol R24 Symbol LL Symbol AB Symbol QO Symbol R25 Symbol MFO Symbol DAQ Symbol VG Symbol 4L Symbol XY...

Page 27: ...SECTION 9 BOARD LAYOUTS 9 1 FRONT UNIT TOP VIEW 9 1 8V 2 8 to microphone 1 7 J1 AFO MICE GND CLO PTT MIC CLI...

Page 28: ...1 to MAIN unit J2 19 2 20 J2 GND PWR LINH LCS LCK LSO AFVI CLI GND MIC 8V 5V KR0 KR1 KR2 FSW HORN CLO PTT AFO 1 16 48 33 32 17 49 64 9 2 BOTTOM VIEW FRONT UNIT...

Page 29: ...PO RMUT DET DISC REM CCS CIRQ SO SI SCK PTTI PTTO MCOT MCIN AUX BUSY MDWN SIG OPT1 OPT2 OPT3 GND OPV3 OPV2 OPV1 to optional unit PTT 11 to optional cable OPC 617 1 J6 GND IN GND DISC GND PAAF GND HORN...

Page 30: ...1 4 8 1 7 14 8 5 12 11 1 1 7 14 8 23 33 22 44 34 1 25 26 50 51 75 76 100 9 4 BOTTOM VIEW MAIN UNIT...

Page 31: ...44EU J6 PAAF C PTTO J1 PTTI J1 DS12 LCD MICI AF AMP SW D31 DAN222 DTC144EU Q50 SW DTC144EU Q49 PA SW NJM12902V IC21 M62334FP IC7 TONE CTCS SIG TC4W53FU IC15 PM FM AMP D A A DER EXPAN Q21 DEMOD MSK HPF...

Page 32: ...30 SEG26 29 SEG25 28 SEG24 27 SEG23 26 SEG22 25 SEG21 24 SEG20 23 SEG19 22 SEG18 21 SEG17 20 SEG16 19 SEG15 18 SEG14 17 SEG13 16 SEG12 15 SEG11 14 SEG10 13 SEG9 12 SEG8 11 SEG7 10 SEG6 9 SEG5 8 SEG4 7...

Page 33: ...20T152 C380 0 001 C379 22p C381 22p C382 0 001 L37 0 1 R9 220 R8 220 L5 LW 25 C12 470p C375 0 001 C13 47p D2 UM9401F 25W D3 XB15A407 45W L4 15n C15 8p T8V C365 5p R69 4 7k D15 MA77 R50 10k R235 1k C30...

Page 34: ...7 100k C377 0 1 R321 68k C399 0 1 Q41 DTA144EU PA R280 10 X4 CR 520 C341 12p C342 22p R277 12k C339 27p R278 12k D27 MA77 C340 0 01 1 2 3 4 5 6 7 8 AO1 AO2 AO3 AO4 GND SDA SCL VCC IC7 M62334FP VAG R30...

Page 35: ...a Inc Glenwood Centre 150 6165 Highway 17 Delta B C V4K 5B8 Canada Phone 1 604 952 4266 Fax 1 604 952 0090 URL http www icomcanada com E mail info icomcanada com Icom Canada A B N 88 006 092 575 290 2...

Page 36: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13817HZ C1U q C 2002 Icom Inc...

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