Icom IC-RP1620 Service Manual Download | Manualshive

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Summary of Contents for IC-RP1620

Page 1: ...VHF REPEATER lcom lnc...

Page 2: ......

Page 3: ...1 4 3 CHASSISPARTS 4 2 4 4 REARPARTS 4 4 6 ADJUSTMENT PROCEDURES 6 1 8 6 1 PREPARATION BEFORE SERVICING 6 1 6 2 RX PLL ADJUSTMENT 6 2 6 3 TX PLL ADJUSTMENT 6 3 6 4 RECEIVER ADJUSTMENT 6 4 6 5 TRANSMI...

Page 4: ...mm 16 7 W x5 9 H x 14 5 D in Projections not included Weight 17 kg 37 5 Ib 117 V AC or 13 8 V DC 15 negative ground 240 V AC or 13 8 V DC 15 negative ground Output power 25 W Modulation system Variab...

Page 5: ......

Page 6: ...signal When the rectified noise voltage is LOW Q5 turns The 21 8 MHz 1st IF signal is applied to FI1 FI1 is OFF The collector of Q9 outputs the busy signal The an MCF Monolithic Crystal Filter which...

Page 7: ...IT The drive amplifier Ql amplifies the signal to obtain 200 mW The control voltage from the APC circuit is applied to the collector of Ql for stable RF output power from a power amplifier ICl 3 2 4 R...

Page 8: ...r consisting of an active filter 210 Q11 The frequency at which the VCO oscillates is controlled by varactor diodes 01 04 on the R VCO UNIT DC voltage PLL lock voltage is provided through the integrat...

Page 9: ...responding to the voltages They are regulated at TX AND T DC DC UNITS the following circuits using 13 8 v DC Phase detected signals from IC2 pin 16 and 17 are 1 5 V REGULATOR RX TX AND LOGIC UNITS con...

Page 10: ...on the LOGIC A UNIT The tone frequency is output relation between input data and the output frequency from from IC6 pin 1 and then applied to R32 for the deviation lC6 adjustment CTCSS TONE ENCODER F...

Page 11: ...4 1 FRONT PARTS Screw abbreviations BO Self tapping screw BiH Binding head PH Pan head BS Brass NI Nickel ZK Black 4 2 ACCESSORIES Screw abbreviations OH Oval countersunk head ZK Black...

Page 12: ...AF UNlT SW UNlT MIC UNlT LED UNlT B 1901D I...

Page 13: ...A 695 transformer shield cover Setscrew C M4x 8 695 top cover 695 bottom cover 1 Screw BiH M4x 5 ZK BS Rubber foot G Screw PH M4x 12 Shield case A 8510001101 8510005870 8510005880 8510005890 88100031...

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Page 17: ...0 6510000410 DESCRIPTION 695 rear panel 1 DIN plate Finger guard B 1 Diode plate Screw PH M5 x 18 NI BS Star washer M5 Spring washer M5 NI Nut M5 NI BS Flat washer M5 NI BS Wing nut M5 NI lcom screw C...

Page 18: ...kR ELR20J 1 W1 ELR2O J 1 kt2 ELR20J 1 kR ELRPOJ 1 kR SPB 28MUW F POWER SLB 26UA 3F FRANSMITI SLB 28MG 3F BUSY TLG205 CTCSS TLY205 LOCAL INHlBlTj TLR205 MANUAL ID TLY205 COR SIMULATE CHASSIS UNIT AF UN...

Page 19: ...DESCRIPTION IC LC7385 DIP Transistor 2SC1815 Y Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS133 Diode 1SS...

Page 20: ...C NJM4558D IC NJM4558D IC NJM7805A tC S 8054ALB Transistor 2SC3399 Transistor 2SC3399 Transistor 2SC2458 GR Transistor 2SC3399 Transistor 2SC3399 FET 2SJ105 GR Diode 1SS133 Diode 1SS133 Diode 1SS133 D...

Page 21: ...10 7010003360 7010003720 Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resi...

Page 22: ...70 4510001270 4510001270 4040000260 4550000350 4550000340 4550000350 4550000340 4550002880 0910030381 DESCRIPTION Ceramic DD104 SL 030C 50V Trimmer CV05C1201 Ceramic DD104 SL OlOC 50V Ceramic DD104 SL...

Page 23: ...tor ELR2OJ 10 k 0 Resistor ELR2OJ 2 2 k n Resistor R20J 220 n Resistor R20J 100 n Trimmer RH0651CS4J25A 473 Resistor R20J 270 kR Resistor R20J 10 kfl Resistor ELR20J 1 k n Resistor ELR2OJ 1 k n Resist...

Page 24: ...ier Layer Electrolytic Barrier Layer Barrier Layer Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Electrolytic Ceramic Ceramic Electrolytic Electrolytic Electrolytic C...

Page 25: ...V Ceramic DD104 SL 180J 50V Ceramic DD07 B 102K 500V Ceramic DD06 SL 220K 500V Ceramic DD06 SL 060D 500V Ceramic DD06 SL 390K 500V Ceramic DD06 SL 050C 500V Ceramic DD06 SL 330K 500V Ceramic D m SL OD...

Page 26: ...00 1520000080 1710000350 1710000140 1710000350 1710000350 1710000350 7010003440 7010003440 7310000730 7010004190 7010003240 7100000160 7310000800 7010003690 7010004320 4010000500 4510002900 4550002880...

Page 27: ...4 MOD AC miltivoltmeter Pin 2 GND DC backup battery 1 0 13 8 V 10 A Standard signal generator 1 RF power meter 50 W150 C2 1 to ACC socket 40 dB or 50 dB 1 MICROPHONE connector Front panel view Ib HrlO...

Page 28: ...ency After adjustment program the identification frequency ADJUSTMENT CONDITIONS Set the receive frequency See below 136 000 MHz Low bandversion 150 000 MHz High bandversion Receiving ADJUST C1 MEASUR...

Page 29: ...it frequency transmitting PLLreferencefrequency 150 000 0 0125 12000 After adjustment programthe identificationfrequency VALUE 8 5 V 150 000 000 Hz ADJUSTMENT POINT MEASUREMENT 1 1 Set the dip switche...

Page 30: ...JUSTMENT ADJUSTMENT CONDITIONS LOCAL INHIBIT switch ON Connect the SSG to the RX ANT connector and set as Level 10 pV 87 dBm Modulation 1 kHz Deviation k3 5 kHz Wide version k1 75 kHz Narrow version R...

Page 31: ...sion After adjustment turn the LOCAL INHIBIT switch OFF Connect the FM deviation meter to the TX ANT connector via the attenuator LOCAL INHIBIT switch ON Connect the audio generator to the MICROPHONE...

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Page 33: ...LUE 800 Hz 1 kHz MEASUREMENT ADJUSTMENT POINT Connect the SSG to the RX ANT connector and set as Level 1 O mV 47 dBm Modulation 1 kHz Deviation 3 5 kHz Wide version 1 75 kHz Narrow version Connect the...

Page 34: ...ng ADJUST R15 R3 Verify OUTPUT POWER REGULATOR OUTPUT VOLTAGE 1 1 2 After adjustment disconnect AC voltage MEASUREMENT UNIT Rear panel REG A Front panel R7 Verify Verify LOCATION Connect the RF power...

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Page 46: ...I I l l I A I DIN UNIT I...

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Page 48: ...3GIC UNIT...

Page 49: ...X U R I L V W ZSYI WILIWRROU 25WI Rn CSP O W Z ITIIZ5W EURl25WI UI l Wi 33OK I I T A l E U R 1 2 5 W i U I I Z 8 W l 00066 01 IT IN RRW Z U U I L U R I O V n w i V S i W t W I Zswl IESI OW 23 6 mIN1RR...

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Page 51: ...PA UNIT...

Page 52: ...MIC I R54 AMP MiX LIMITER l C l 0 1 2 0 l C l 0 1 2 IC7 1 2 A4558 BA455 8 884558 1 ICI LOGIC A UNlT I pPD74HC238C I...

Page 53: ...BA4558 I 1 T V C O 1 I I PA 01 2SK125 BUFF BUFF ICI LPF MOD 132 2SC2026 OUT D ICI 02 SC 1131 Dl D4 D5 pPC1651G 2SC3355 136 150M n I ISVSOE 1 a I A SC 1132 I I 136 174MHz 1150 174M L J L P D TBV APC CT...

Page 54: ...PA UNI TX ANT T KF BMP 01 0RX ANT 3SK121...

Page 55: ...04 991 6166 Fax 404 991 6327 lcom Canada A D v s o n of lcom Amerlca Inc 3071 5 Road Unit 9 Richmond B C V6X 2T4 Canada Phone 604 273 7400 Fax 604 273 1900 lcom urope GmbH Comrnun cation Equ pment Him...

Page 56: ...lcom Inc 6 9 16 Kamihigashi Hirano ku Osaka 547 Japan A 5138H S Printed in Japan Copyright 1991 by lcorn Inc...

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