Icom ic-r20 Service Manual
Also see for IC-R20: Price listInstruction manualInstruction manualService manual
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Aug. 200922SECTION 11. VOLTAGE DIAGRAM*: Refer to the PARTS LIST for the value and name of component.RF UNIT (1/2)3.0V433 MHz0VATT-ON2.9V5 MHz2.0V145 MHz2.6V145 MHz51 MHz2.9V2.9V145 MHz2.6V433 MHz2.9V433 MHz3.0V145 MHz2.9V470 MHz2.9V1295 MHz1.9V433 MHz12345678B_R3VIFO16AGCATTIFO10A_R3VA-AGCANTSWB_TRACA_ATTCAGCAGCAGCCGACGACGAAGCAGCAGCAGCAGCR22015C2140.001R1082.2kC160.001C4350.001C5660.01R88330C4080.001R2262.2kC1210.001L616.8nHR6120L135.6nHC43100pR952.2kQ508XP43121 2 3456L913.9μHD101MA2S077G0C5440.001L410.1μHC6620.1R982.2kR10647kC148470pC5630.001C5390.1R10147kR1122.2kC5370.1C2063.5pR2162.2kR78330R238100kL444.7nHC5610.001C5210.1C270.001R2392.2kC1327pR2314.7kR13 15kR228100C5430.001R10012kR1022.2kC140.001C320.001R23010kC665100pR10568L810.27μHC151pC440.01C501pC493pR1147kC4015pC5240.01R1647kC1340.001C550.001R110 12kR1047kC1247pL3939nHL1115nHC5450.01R23610kC415pL566.8nHC476pC2181pR221330R2222.2kC423.5pC5380.1C4320.001C6630.1C5600.001C1367pC56847pC690.001R22947kC1472.5pL820.33μHC5460.1C529150pC700.001C4100.001R2232.2kC5690.1L933nHC227pC5700.001R991kR2243.3kC5580.001R912.2kC235pC280.001 C592pC67447pR2372.7kC486p R4330C41627pL606.8nHC1410.01L515nHL830.47μHC516220pC300.001C1500.001C6670.01L920.39μHC5360.1C5230.0015L853.9μHC2330.001C5620.001C5710.001C4140.001L422nHC580.001C5480.001C1420.001R815kL1022nHR2401kR1815kR93120C52470pR1947kC5400.1C5470pL1210nHR1547kL700.10μHC138470pR812.2kC1530.1C540.001R24522kC5320.1C6772pL9322nHL9433nH C6780.001L9515nHFI4 EFCH429MKQP1IC6790.001C6830.001Q509UNR9113G0IC15μPC2757TB1 RFI2 GND3 LO 4PS5VCC6IFO IC16μPC2757TB1 RFI2 GND3 LO 4PS5VCC6IFOL7447nHC7470.001C7500.001C7463.5pC7480.001R42315C4363pC7490.001L1547nHC713pL1016.8nHL1126.8nHR47115kC8070.001 C8080.001C8090.001C8110.001R472330C8120.001R47347kC8142pC8150.001C8160.001L1136.8nHR47447kC8177pR4752.2kD1431DV308C8270.001C8280.001R478330R47915kC8320.001R48147kC8331p C8340.001 C8350.001C8360.001R4822.2kD1471SV308 FR48347kC837100pC838100pQ550FH102A-E123456R4854.7kC8390.001C8400.001R488330C8420.001C8438pC84118pQ551UPA805T123456R4904.7kL12247nHC8440.001C8458pC8460.001C8470.001R491330R492150R493150C849100pC850100pR48422kR48922kC85127pC85227pC85315pC8549pC85547pC8567pC857100pC85812pC8590.001Q552UNR9113G0R495 4.7kR4964.7kC8600.001 C8610.001R4944.7kD152 MA2S7280GD153 MA2S7280GD154 MA2S7280GD155MA2S7280GIC18μPC2746TB1 IN2 GND3 GND 4OUT 5GND 6VCCC8640.1C8650.001R50082C8660.001IC19μPC2746TB1 IN2 GND3 GND 4OUT 5GND 6VCCC6640.1R5014.7kD156MA2S7280GD157 MA2S7280GD158 MA2S7280GD159 MA2S7280GD160 MA2S7280G D161 MA2S7280GD162 MA2S7280GD163MA2S7280GD164MA2S7280GD166 MA2S7280GD167 MA2S7280GD168 MA2S7280GC8680.001R335100kC6730.001C67622pD169MA2S7280GD170MA2S7280GC8720.1CP3ANTENNA0.1500 – 3304.9999 MHzIC1μPC2757TB1 RFI2 GND3 LO 4PS5VCC6IFOFI1 EFCH266MKQP1IIC10μPC2757TB1 RFI2 GND3 LO 4PS5VCC6IFOQ510UMD6123 456D1HVC350B-ED2HVC350B-ED4HVC350B-ED5HVC350B-ED141HVC350B-E D142HVC350B-ED145HVC350B-ED146HVC350B-ED31SV308 FD111SV308 FD131SV308 FD251SV308 FD291SV308 FD321SV308 FD34 1SV308 FD361SV308 FD721SV308 FD731SV308 FD741SV308 FD751SV308 FD76MA2S077G0C666390pD148MA2S7280GD149MA2S7280GD150MA2S7280GD151MA2S7280GL1210.18μHL2868nH L147nHL11968nHL12047nHL1280.1μHR234820R233820R2323.3kD173HVC375B-ED174HVC375B-EL1293.9nHL1303.9nHC1450.001L1313.9nH L1323.9nHC8860.001C887 0.001D175HVC375B-ED176HVC375B-ER522100kR523100k R524100kQ242SC5008C45470pC512.5pC8483pC8880.001R46968kQ5482SC5006R1468kQ352SC5006Q362SC5006L315nHL13356nHL90100μHC513100pC51136p C514180pC51210p C515120pC5190.0047C517100p C518220pC5200.0018L840.68μHD651SV308 FL860.68μHL871μHC52747p C52810pC530270p C531100pC5330.0015C534100p C5350.0012C657150p C658390pL885.6μH L8910μHD661SV308 F D641SV308 FD701SV308 FD671SV308 FC8910.01 C5220.0015C5250.0047 C5260.012L12618nHL12718nHL12347nHQ5072SC5008Q142SC5006Q5492SC5006L12456nHL12547nHR327100R2351kR225 1kD691SV308 FR9120kR476120kC895470pQ5052SC4226C8970.001C8980.001C8990.001C9000.001C9010.001R323 220R497 220R324100R32582R32682R498100R49982R531100kR486100R487100Q262SC5624-ER20330C463pR53310C910100R2412.2kD1781SS400CP18R53915R54015C9210.001L431.5nHQ504XP111012345Q506UNR9110G0C5410.1 C5420.1D681SV172B1CHFCB2CANTSWANTSWANTSWA_TRACA_TRACA_TRACA_TRACA_TRACA_TRACA_TRACA_R3VB_TRAC B_TRACB_TRACA_R3VA_R3VV3R_AV3R_AB_G3VB_G3VB_G3VB_UHF3VB_UHF3VB_TRACA_UHF3VA_UHF3VA_UHF3VA_TRACB_ATTCB_ATTCB_ATTCB_ATTCB_ATTCB_ATTCA_R3VB_R3VB_R3VB_R3V B_R3V300M3VA_ATTCA_ATTCA_ATTCA_ATTC A_ATTCA_ATTCA_ATTC A_ATTCA_ATTCANTSWB_R3VB_800M3VB_800M3VB_800M3VB_800M3VCART_BCART_BB_TRACA_VHF3VATTB3CB_VHF3VB_R3VB_RXVEAREAREAREARC_VCO OUTA_VCO OUTB BAND RF INB_VCO OUT B_VCO OUTC9190.001D_VCO OUTD_VCO OUTA-BAND VHFB-BAND VHFA-BAND UHFB BAND UHFB BAND 800M30 – 300 MHzB_BAND 1GUHF PRE-AMPVHF PRE-AMPANTSWANTSWANTSWEARANTSWB BAND RF AMPA BAND RF AMPHF HHF LMFOC5670.1R243100kCP5CP6CP7D100SVC347-ECP8R2472.7C9120.1R538JPWR246220kW1 W2EP2BAR ANTENNA0.4950 – 1.6200 MHz1B2W3R4GbluewhiteredgreenC505 0.001C504 0.001C503 0.001Q501UNR9113G0C862 0.001C863 0.001Q502XP1113 12345Q503XP1113 12345Q554XP111312345A_UHF3VA_VHF3VB_G3VB_800M3VA_UHFCB_GCB_800MCB_VHFCB_UHFCAB_VHF3VB_VHF3VB_UHF3VB_UHF3VB_UHF3V300M3VA_VHFCA_300MCA_R3VB_R3VOR329100kQ513XP46011234 5 6R33015kC6690.001A_TRACVPVPBExplanatory notesVOLTAGE LINERX LINEIF_OUTJ10R5102.2kC92310pC92410pC923* – C925*C92510pCSOCSORFINGNDPLLESTBPLLDATAPLLCKPLLESTBPLLDATAPLLCKJ1111 22 33 44 55 66DOWN_CONV2GLO1GLO+3Vto DOWNCONVBOARD J1to DOWNCONVBOARD J2R5342.7C911100+3SDOWNCONVBOARDR5112.2kRFIN |
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