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SERVICE

MANUAL

VHF FM TRANSCEIVER

iF1610

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Summary of Contents for IC-F1610

Page 1: ...SERVICE MANUAL VHF FM TRANSCEIVER iF1610...

Page 2: ...ment model name and unit name 4 Quantity required SAMPLE ORDER 1110003571 S IC MC3372SVM IC F1610 MAIN UNIT 5 pieces 8810008660 Screw BT M3x8 NI ZU IC F1610 Bottom cover 10 pieces Addresses are provid...

Page 3: ...4 4 4 5 PORT ALLOCATIONS 4 5 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 INITIAL SET MODE 5 2 5 3 PLL ADJUSTMENT 5 3 5 4 RECEIVER ADJUSTMENT 5 4 5 5 TRANSMITTER ADJUSTMENT 5 5 SECTION 6 PA...

Page 4: ...lter Audio output power External SP connector ETS 300 086 146 174 MHz 128 16 ch 8 banks 16K0F3E 25 kHz Wide 8K50F3E 12 5 kHz Narrow 20 C to 55 C 13 2 V DC negative ground 7 0 A 1 2 A 700 mA SO 239 50...

Page 5: ...573 PLL IC IC12 MC145190F D A converter IC5 M62363FP FRONT unit CPU IC20 HD64F3437F16 EEPROM IC27 X25650S8I 2 5 Low pass filter circuit 1st mixer Q2 3SK166 RF amplifier Q1 3SK116 1st IF filter FI1 FL...

Page 6: ...PC 617 Pin No Terminal name Description Specification 1 DIM Backlight control input 5 to 30 V for dark 2 PAAF AF output for public address and Ext SP func tions 0 to 330 mV rms 47 k 3 DISC AF output f...

Page 7: ...ket bolts from the front plate using an allen wrench 1 32 in Separate the front unit from the transceiver main unit Remove 4 screws from the RMK 1 front unit attach ment to open the rear plate Connect...

Page 8: ...btain selection capability and to pass only the desired signals The filtered signal is applied to the 2nd IF circuit after being amplified at the 1st IF amplifier Q4 4 1 4 2ND IF AND DEMODULATOR CIRCU...

Page 9: ...receiving a signal containing a matching subaudible tone CTCSS or DTCS When tone squelch is in use and a signal with a mismatched or no subaudible tone is received the tone squelch circuit mutes the...

Page 10: ...rcuit protects the power module IC11 from a mismatched output load and stabilizes the output power The APC detector circuit detects forward signals and reflec tion signals at D3 and D1 respectively Th...

Page 11: ...1 12 6 MHz Rx VCO Q21 D19 D20 D40 D41 Tx VCO Q23 D21 D22 D42 D43 Charge pump LINE HV VCC CPU5V 5V 8V R8V T8V MT8V DESCRIPTION The voltage from the external power connector Same voltage as the HV line...

Page 12: ...d Outputs high pass filter s characteris tics select signal High During CTCSS operation Outputs mic audio select signal to the audio switch IC25 High While Public address func tion is ON Outputs MT8V...

Page 13: ...Oscilloscope DC voltmeter Digital multimeter AC millivoltmeter External speaker Attenuator Terminator GRADE AND RANGE Frequency range 0 1 600 MHz Output level 0 1 V 32 mV 127 to 17 dBm Frequency rang...

Page 14: ...ol Beep ON OFF Maximum beep level DTCS balance CTCSS DTCS Tone deviation Maximum voice deviation S meter level Transmit low power L1 Transmit low power L2 Transmit high power H MODE No NOTE 2 beeps li...

Page 15: ...nsmitting MAIN Rear panel Connect a digital multi meter or an oscillo scope to the check point LV Loosely couple a fre quency counter to the antenna connector 3 0 V 10 0 14 0 V 3 0 V 10 5 15 5 V 174 0...

Page 16: ...ge 5 2 for details Receiving Make sure no signal is being applied to the antenna connector Enter Initial Set Mode No 2 Refer to page 5 2 for details Operating frequency 136 000 MHz Receiving Connect a...

Page 17: ...Refer to page 5 2 for details No AF signals are applied to the micro phone connector Set an FM deviation meter as HPF OFF LPF 20 kHz De emphasis OFF Detector P P 2 Wide Narrow setting Wide DTCS code...

Page 18: ...030003680 S RESISTOR ERJ3GEYJ 104 V 100 k R44 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 k R45 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 k R46 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R47 7030003440 S RE...

Page 19: ...S VARICAP 1SV217 TPH2 D41 1720000270 S VARICAP 1SV217 TPH2 D42 1720000270 S VARICAP 1SV217 TPH2 D43 1720000270 S VARICAP 1SV217 TPH2 D44 1720000360 S DIODE HSU88TRF D45 1750000550 S DIODE 1SS355 TE 17...

Page 20: ...473 V 47 k R15 7030003340 S RESISTOR ERJ3GEYJ 151 V 150 R16 7030003720 S RESISTOR ERJ3GEYJ 224 V 220 k R17 7030003720 S RESISTOR ERJ3GEYJ 224 V 220 k R18 7030003720 S RESISTOR ERJ3GEYJ 224 V 220 k R19...

Page 21: ...003560 S RESISTOR ERJ3GEYJ 103 V 10 k R239 7030003560 S RESISTOR ERJ3GEYJ 103 V 10 k R240 7030003660 S RESISTOR ERJ3GEYJ 683 V 68 k R242 7030003500 S RESISTOR ERJ3GEYJ 332 V 3 3 k R243 7030003460 S RE...

Page 22: ...R530 7030003500 S RESISTOR ERJ3GEYJ 332 V 3 3 k R531 7030003440 S RESISTOR ERJ3GEYJ 102 V 1 k R532 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 k R533 7030003680 S RESISTOR ERJ3GEYJ 104 V 100 k R534 70300...

Page 23: ...0J T A C126 4030007020 S CERAMIC C1608 CH 1H 120J T A C127 4030007060 S CERAMIC C1608 CH 1H 270J T A C128 4030007020 S CERAMIC C1608 CH 1H 120J T A C129 4030007070 S CERAMIC C1608 CH 1H 330J T A C130...

Page 24: ...E 105M 8L C340 4030006860 S CERAMIC C1608 JB 1H 102K T A C341 4030006860 S CERAMIC C1608 JB 1H 102K T A C343 4030006860 S CERAMIC C1608 JB 1H 102K T A C344 4030006860 S CERAMIC C1608 JB 1H 102K T A C3...

Page 25: ...CERAMIC C1608 JB 1E 103K T A C550 4030006860 S CERAMIC C1608 JB 1H 102K T A C551 4030006860 S CERAMIC C1608 JB 1H 102K T A C552 4030006860 S CERAMIC C1608 JB 1H 102K T A C553 4030009990 S CERAMIC C16...

Page 26: ...5 7 1 REF NO SECTION 7 MECHANICAL PARTS CHASSIS PARTS ORDER NO DESCRIPTION QTY REF NO FRONT UNIT ORDER NO DESCRIPTION QTY REF NO MAIN UNIT ORDER NO DESCRIPTION QTY J1 6510004880 Connector MR DS E 01 1...

Page 27: ...MP6 C MP3 C J2 M MP15 C MP12 C MP13 M MP2 M MP4 M MAIN Top side MP6 M J5 M MP2 C MP9 M MP12 M MP2 C MP8 M W4 M MP8 C MP5 C MAIN UNIT Bottom side FRONT UNIT MP1 C MP5 F MP6 F MP1 F MP7 F MP7 C OPPOSITE...

Page 28: ...Symbol K DTA114EU Symbol 14 DTA143ZU Symbol 113 DTA144EU Symbol 16 DTC114EU Symbol 24 DTC114YU Symbol 64 DTC144EU Symbol 26 DTC363EK Symbol H27 FMS2A Symbol S2 FMW2 Symbol W2 XP4601 Symbol 5C D S G2...

Page 29: ...MICE AFO 8V P0 P1 P2 P3 P4 1 4 7 2 5 8 0 3 6 9 MP2 SECTION 9 BOARD LAYOUTS The combination of this page and the next page show the unit layout in the same config uration as the actual P C Board 9 1 FR...

Page 30: ...5 8 4 1 49 64 48 1 33 16 32 17 39 38 65 1 102 64 12 A SPO B AFO C HANG 128 103 1 12 J2 VCC SQL SP SPE 8V FTXD FRXD POSW MICE MIC GND AFO from MAIN unit J5 9 2 BOTTOM VIEW...

Page 31: ...SCK J6 30 16 ESI ECS2 CPU5V ECK ESO GND 6 2 5 1 to Optional unit EX 1761 J7 VCC VCC SP SPE 8V FTXD FRXD POSW MICE MIC GND AFO to FRONT unit J2 J5 1 12 1 11 1 6 2 5 50 26 75 25 76 51 1 100 8 4 1 5 1 15...

Page 32: ...MP11 16 9 1 1 4 1 5 8 5 10 6 8 MP7 4 1 5 8 MP10 10 1 11 8 1 9 16 20 5 8 4 1 8 5 1 4 MP13 SP MP12 9 4 BOTTOM VIEW...

Page 33: ...TEMP N W NWC IC12 MC145190F Q18 2SC51110 Q25 DTC144EU Q26 DTC114EU IC13 TC4W66FU Q30 FMS2A Q31 FMW2 Q505 DTC144EU X501 R8V T8V HV VCC CPU5V VRX TMUT PWON 8V MT8V 5V CTRL 5V IC16 TA7808F Q36 2SD1664 Q3...

Page 34: ...2 R4 1k R5 100k R7 10k R8 220k O U T 1 V D D 2 V S S 3 N C 4 N C 5 IC3 S 80742SL D1 MA111 R6 470k R9 220k Q1 2SC4081 C11 0 01 R10 100k R17 100k Q3 DTC114EU 5V C18 0 1 C19 470p C21 1 C22 0 1 IC5 AN8005...

Page 35: ...S 15 SDA WAIT P97 16 P96 17 AS P95 18 WR P94 19 KEYIN13 PA5 20 KEYIN12 PA4 21 RD P93 22 IRQ0 P92 23 EIOW IRQ1 P91 24 ECS2 IRQ2 P90 25 P42 TMRI0 51 P43 TMCI HIRQ11 52 P44 TMO1 HIRQ1 53 P45 TMRI1 HIRQ1...

Page 36: ...10a NJM2904 D44 HSU88 R103 4 7k 5 6 7 IC10b NJM2904 R99 4 7k C409 47p R329 1k D45 1SS355 R361 4 7k Q12 2SJ377 R333 10k C394 470p R107 470 Q14 DTC144EU D509 DAN202U C116 470p IC16 TA7808F D15 DSA3A1 R3...

Page 37: ...6 C207 10 R564 47k R563 47k D27 DA204U R213 4 7k R212 4 7k Q40 2SD1664 Q41 2SC4116 D29 DA204U C406 470p C407 470p R566 47k R565 47k Q38 2SD1664 C267 10 C264 0 1 Q42 2SB1123 L504 3 3 Q43 2SC4081 C252 0...

Page 38: ...Australia Phone 03 9387 0666 Fax 03 9387 0022 Unit 9 Sea St Herne Bay Kent CT6 8LD U K Phone 01227 741741 Fax 01227 741742 URL http www icomuk co uk Zac de la Plaine Rue Brindejonc des Moulinais BP 58...

Page 39: ...6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan A 5547HI SV C 1998 by Icom Inc...

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