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SERVICE

MANUAL

COMMUNICATIONS RECEIVER

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Summary of Contents for IC-R2

Page 1: ...SERVICE MANUAL COMMUNICATIONS RECEIVER...

Page 2: ...Quantity required SAMPLE ORDER 8930046581 LCD Contact IC R2 LOGIC UNIT 5 pieces 8810009560 Screw PH BO M2x6 ZK IC R2 Chassis 10 pieces Addresses are provided on the inside back cover for your conveni...

Page 3: ...PORT ALLOCATIONS 4 4 SECTION 5 ADJUSTMENT PROCEDURES 5 1 PREPARATION 5 1 5 2 PLL ADJUSTMENT 5 3 5 3 RECEIVER ADJUSTMENT 5 5 SECTION 6 PARTS LIST SECTION 7 MECHANICAL PARTS AND DISASSEMBLY SECTION 8 S...

Page 4: ...spurious points FM and WFM are measured at 12 dB SINAD AM is measured at 10 dB S N Squelch Sensitivity Selectivity AM FM more than 15 kHz 6 dB less than 30 kHz 60 dB WFM more than 150 kHz 6 dB Audio...

Page 5: ...6F AF mute switch Q37 2SJ144 AF filter Q30 XP6501 3 2 regurater IC4 S 81332H 2nd mixer IC10 PC2757T IF amplifer Q5 2SC5231 FM IF IC IC2 TA31136FN PLL circuit PLL IC IC3 PD3140GS PLL reference oscillat...

Page 6: ...in the direction of the arrow REMOVING THE RF UNIT 1 Unscrew 1 screw B 2 Remove 1 knob c Unscrew 2 nuts D and E 3 Unsolder 5 points F and then remove the RF unit REMOVING THE LOGIC UNIT 1 Unscrew 2 s...

Page 7: ...lters D3 D4 and band switching diode D29 The 470 MHz 832 995 MHz signals are amplified at RF amplifier Q24 via the band pass filter C32 C33 C35 C37 C39 C144 C145 between the band switching diode D11 D...

Page 8: ...and pass filter and are then applied to the pre amplifier Q31 While in WFM mode AF signals are applied to the pre amplifier Q31 directly The pre amplified AF signals pass through the AF mute cir cuit...

Page 9: ...2 MHz reference frequency which is stabilized within the tem perature range 10 C 14 F to 60 C 140 F The refer ence frequency is applied to the PLL IC IC3 pin 16 and the signal is output from the pin 1...

Page 10: ...or UP DOWN switches Output AF mute switch LOGIC unit Q37 control signal LOW While squelched Input port for the Low battery detec tion Input port for the RSSI signal from the FM IF IC RF unit IC2 pin12...

Page 11: ...h PLL IC RF unit IC3 and EEPROM IC LOGIC unit IC2 Outputs clock signal to EEPROM IC Input ports for Initial matrix Outputs strobe signals for the PLL IC Outputs data signals to the PLL IC Input port f...

Page 12: ...select the sub menu Screen Memory CH Bank 1 then input adjustment frequency at right y Select Write Receiver of the Clone on the top menu Application writes adjustment frequency data to the connected...

Page 13: ...5 2 CONNECTION DC power supply 3 0 V 1 0 A Standard signal generator AD 92SMA Optional SMA BNC adaptor 1 8 3 5 mm 3 conductor plug Terminator for the entering adjustment mode 68 k to SP jack...

Page 14: ...00 MHz Receiving Displayed frequency FR ch 280 100 MHz Receiving Displayed frequency tk ch 145 600 MHz Connect an SSG to the antenna connector and set as Level 1 mV 60 dB Deviation 3 5 kHz Modulation...

Page 15: ...5 4 L21 Detector output voltage adjustment LV1 1st VCO lock voltage check point QUAD Detector output voltage check point LV2 2nd VCO lock voltage check point F PLL Reference Frequency check point...

Page 16: ...V 113 dBm Modulation 1 kHz Deviation 3 5 kHz Receiving Displayed frequency RS ch 145 100 MHz Set the SSG as Level 0 5 V 113 dBm Receiving Displayed frequency RS ch 200 100 MHz Set the SSG as Level 0 5...

Page 17: ...5 6 SEN VHF and UHF sensitivity check point...

Page 18: ...J2GEJ 124 X 120 k R52 7030007340 S RESISTOR ERJ2GEJ 153 X 15 k R67 7030005240 S RESISTOR ERJ2GEJ 473 X 47 k R68 7030005040 S RESISTOR ERJ2GEJ 472 X 4 7 k R77 7030005090 S RESISTOR ERJ2GEJ 104 X 100 k...

Page 19: ...C1005 JB 0J 104K T N C98 4550006760 S TANTALUM TEMSVB2 1A 336M 8R C100 4030013970 S CERAMIC C1005 JB 0J 104K T N C101 4030013850 S CERAMIC ECUE1E102KBQ C102 4030014200 S CERAMIC ECUE1H101JCQ C103 4030...

Page 20: ...RE 8N2Z F L80 6200005630 S COIL ELJRE 5N6Z F L81 6200004940 S COIL MLF1608D R27K T L82 6200005140 S COIL MLF1608D R33K T L83 6200004790 S COIL MLF1608D R47K T L84 6200004790 S COIL MLF1608D R47K T L85...

Page 21: ...82 R235 7030005030 S RESISTOR ERJ2GEJ 152 X 1 5 k R236 7030005050 S RESISTOR ERJ2GEJ 103 X 10 k R237 7030009140 S RESISTOR ERJ2GEJ 272 X 2 7 k R238 7030005090 S RESISTOR ERJ2GEJ 104 X 100 k R239 70300...

Page 22: ...03K T A C250 4030014110 S CERAMIC ECUE1H080CCQ C251 4030014070 S CERAMIC ECUE1H040BCQ C252 4030014110 S CERAMIC ECUE1H080CCQ C256 4030013850 S CERAMIC ECUE1E102KBQ C257 4030013850 S CERAMIC ECUE1E102K...

Page 23: ...30014200 S CERAMIC ECUE1H101JCQ C666 4030014470 S CERAMIC ECUE1E391KBQ C667 4030009820 S CERAMIC C1005 JB 1C 103K T A J1 6510020550 S CONNECTOR AXK6S40445P EP1 0910050763 PCB B 5163C 6 6 REF ORDER DES...

Page 24: ...P15 8930044250 1995 BATT seal 1 MP22 8810009790 Screw PH B0 1 7X4NI ZU BT 3 MP23 8810009560 Screw PH B0 2X6ZK BT 2 MP26 8930047470 1995 Mic sheet 1 MP27 8930043440 Sponge EY 1 7 1 CABINET PARTS CHASSI...

Page 25: ...PARTS R RF UNIT L LOGIC UNIT SP1 C MP4 C MP27 C MP26 C MP7 C MP11 C MP1 C MP14 C MP10 C MP6 C MP13 C MP23 C MP15 C MP2 C MP3 C MP5 C MP22 C MP5 L MP22 C MP4 L RF unit LOGIC unit MP1 L DS8 L MP2 L MP3...

Page 26: ...S Symbol BR TRANSISTOR AND FET S B E C E C B E C B E C B E C B E C B E C B E C B B E C B E C B E C E2 B2 B1 C2 E1 C1 E2 B2 B1 C2 E1 C1 B1 B2 E C2 C1 E1 C2 B1 C1 E2 B2 E1 C2 B1 C1 E2 B2 S D G S D G 2S...

Page 27: ...BOARD LAYOUTS 9 1 LOGIC UNIT TOP VIEW R185 R26 IC2 R77 C42 R51 R50 R49 D1 R86 Q18 R35 R34 R33 R32 C51 C106 Q40 W2 IC11 R5 DS2 R100 R87 Q13 C39 R24 R89 R88 C40 IC5 D9 D8 D7 D6 D10 D14 C121 C24 IC3 C5 C...

Page 28: ...9 C91 R164 R166 C90 C80 R165 R137 R156 R113 W5 R112 R159 C82 Q35 C61 IC15 Q23 C89 Q36 Q37 C86 Q30 IC14 C88 IC1 C116 D13 C16 Q24 C118 C60 S8 C87 IC9 S10 J1 C17 C18 C19 Q26 C33 D5 D15 C48 C94 D3 C36 Q41...

Page 29: ...C542 C541 R232 C151 R14 L3 R13 L84 Q35 D4 L92 L9 L12 L43 L44 L60 IC10 FI3 Q41 C242 D5 Q36 C520 D65 C532 C525 C523 L85 C524 D70 D64 C521 C529 C530 C562 R134 Q33 C560 C561 R89 R88 C134 C135 C27 C550 C58...

Page 30: ...8 C190 C193 C191 L53 L51 C410 C503 D20 Q502 Q501 D67 Q505 L90 C557 C69 R78 C118 C35 D32 C436 L74 D59 R203 L21 C507 R207 D61 L15 R102 R101 D21 L42 Q24 R100 C145 D71 C121 R81 C153 C16 R11 C15 C14 C243 C...

Page 31: ...329 995MHz 833 1309 995MHz 470 832 995MHz D32 1SV308 D34 1SV308 LOSW CONT x2 x2 Q33 XP1113 3S Q31a FH102 494 195MHz 833 000 1066 695MHz Q31b FH102 1066 700 1309 995MHz 494 200 832 995MHz BANDSW IC11...

Page 32: ...8 100 k R23 15 k Q40 2SA1588 GR R185 3 3 k S1 S10 JPM1990 2013R R37 470 KSO D6 MA2S111 D7 MA2S111 D8 MA2S111 R52 15 k R86 100 k R77 100 k ECS CS 1 SO 2 WP 3 VSS 4 SI 5 SCK 6 HOLD 7 VCC 8 IC2 X25650S8I...

Page 33: ...6 FH102 C249 0 01 R3V R121 330 C209 0 001 Q37 2SC4617 S C155 5 P R5 6 8 k R67 10 k R201 10 k R154 1 k R187 2 2 k C2 0 22 C654 0 22 C656 8 P CP4 D5 HVU350 R91 2 2 k 300M3V UHF3V 330 470M C27 0 001 D4 H...

Page 34: ...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 35: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan A 5520IZ S w 1998 Icom Inc...

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