Icom Ic-r75 Communications Receiver Service Manual
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6 - 1 SECTION 6 MECHANICAL PARTS AND DISASSEMBLY REF. NO. ODER NO. DESCRIPTION QTY. J1 6510000370 Connector MR-DS 1 W3 8900007000 Cable OPC-684 1 W4 8900007000 Cable OPC-684 1 W5 8900007000 Cable OPC-684 1 W6 8900007000 Cable OPC-684 1 MP1 8010017710 2240 main Chassis 1 MP2 8110006700 2240 U-cover 1 MP3 8110006690 2240 L-cover 1 MP4 8930005790 Collar foot (A) 1 MP5 8930005800 Collar foot (B) 1 MP6 8010001520 Stand (C) 1 MP7 8930002900 Rubbr foot (A) 2 MP8 8930035240 1546 TR-B Clip 1 MP9 8930049600 2240 IC Clip 1 MP10 8810008660 Screw PH BO M3x8 NI-ZU (BT) 4 MP11 8810008660 Screw PH BO M3x8 NI-ZU (BT) 2 MP12 8810008660 Screw PH BO M3x8 NI-ZU (BT) 2 MP13 8810005770 Screw Bih M3x8 ZK 8 MP14 8810005770 Screw Bih M3x8 ZK 2 MP15 8810008660 Screw PH BO M3x8 NI-ZU (BT) 6 MP16 8810008660 Screw PH BO M3x8 NI-ZU (BT) 5 MP17 8810008660 Screw PH BO M3x8 NI-ZU (BT) 2 MP18 8810008660 Screw PH BO M3x8 NI-ZU (BT) 1 MP19 8930037001 1691 Earth plate 1 MP20 8810008660 Screw PH BO M3x8 NI-ZU (BT) 2 MP22 8810009130 Screw PH BO M3x12 NI-ZU (BT) 2 MP23 8410002310 2240 Heatsink 1 MP24 8810008660 Screw PH BO M3x8 NI-ZU (BT) 2 MP25 8930049610 2240 Unit holder 1 MP26 8810003960 Screw M2.6x5 2 [CHASSIS PARTS] REF. NO. ODER NO. DESCRIPTION QTY. SP1 2510000670 VS-50-0827 1 W3 8900008940 Cable OPC-886 1 W4 8900008930 Cable OPC-885 1 W5 8900007000 Cable OPC-684 1 EP1 6910012480 RMS20-250-201-1R 1 EP2 6450001230 Snap plate HLJ0999-01-480 1 MP1 8210016030 2240 Front cover 1 MP2 8930001770 SP net 1 MP4 8930048740 2240 9-Key 1 MP5 8930048730 2240 6-Key 1 MP6 8930048750 2240 20-Key 1 MP7 8930048710 2240 Brake plate 1 MP9 8930049370 2240 Brake sheet 1 MP10 8830001010 Screw Hex nut (A) 1 MP11 8830001010 Screw Hex nut (A) 1 MP12 8830001410 1897 Nut 1 MP13 8610010420 Knob N-261 1 MP14 8610010420 Knob N-261 1 MP15 8610010710 Knob N-272 1 MP16 8610010710 Knob N-272 1 MP17 8610009160 Knob N-213 Base 1 MP18 8610009170 Knob N-213 Cover 1 MP21 8010017770 2240 F-Chassis 1 MP24 8810008660 Screw PH BO M3x8 NI-ZU (BT) 5 MP25 8810008660 Screw PH BO M3x8 NI-ZU (BT) 1 MP26 8930048890 2240 SP holder 1 MP27 8810008660 Screw PH BO M3x8 NI-ZU (BT) 4 MP28 8810008660 Screw PH BO M3x8 NI-ZU (BT) 4 MP37 8930049870 2240 SP sponge 1 MP38 8930049840 Knob sheet (B) 2 [FRONT UNIT] REF. NO. ODER NO. DESCRIPTION QTY. DS101 5030001690 LCD HLCF7395-012400 1 EP2 8930049630 LCD contact SRCN-2240-SP-N-W 1 MP1 8210016060 2240 Reflector 1 MP2 8930048880 2240 LCD Holder 1 MP3 8930049380 2240 LCD Filter 1 [DISPLAY UNIT] REF. NO. ODER NO. DESCRIPTION QTY. MP382 8510005990 724 Shield case cover 1 MP442 8510005160 602 Shield case cover 1 [MAIN UNIT] REF. NO. ODER NO. DESCRIPTION QTY. MP3 8510010770 1876 DDS cover 1 MP9 8510005990 724 Shield case cover 1 MP12 8510005990 724 Shield case cover 1 [PLL UNIT] REF. NO. ODER NO. DESCRIPTION QTY. F1Optional productFuse FGB 3A [USA], [EUR], [OTH] 1Optional productFuse FGB 3A [UK], [SEA] 3 W1 Optional productCable OPC-869 [UK], [SEA] 1 EP1 Optional productCharger AD-55A [USA] 1Optional productCharger AD-55 [EUR], [OTH] 1Optional productCharger AD-55V [AUS] 1 [ACCESSORIES] EP1 W1 F1
6 - 2 UNIT abbreviation(C): CHASSIS PARTS, (P): PLL UNIT, (M): MAIN UNIT, (F): FRONT UNIT, (D): DISPLAY UNIT MP27 (F)MP37 (F) MP26 (F) SP1 (F) MP2 (F) MP1 (F) MP11 (F) MP10 (F) MP16 (F) MP15 (F) MP13 (F) MP38 (F) MP18 (F) MP14 (F) MP7 (F) MP9 (F) MP17 (F)MP12 (F)MP4 (F)MP5 (F)MP24 (F)EP2 (D) MP1 (D) MP3 (D) DS101 (D) MP2 (D)DISPLAY UNIT MP24 (F) W4 (F)W3 (F) MP10 (C)EP2 (F)MP15 (C)MP382 (M) MP442 (M) MP15 (C)MP13 (C)MP13 (C)MP13 (C) MP13 (C) MP20 (C) J1 (C) MP19 (C) MP17 (C) MP18 (C) MP3 (P) MP9 (P) MP12 (P) MP16 (C) MP16 (C) PLL UNIT MP2 (C) W6 (C) MP23 (C) MP24 (C) MP1 (C) MP9 (C) MP8 (C) MP15 (C) MAIN UNIT MP21 (F)MP28 (F) MP25 (F) MP10 (C)MP25 (C) MP26 (C) MP3 (C) W5 (C) W4 (C) W3 (C) W5 (F) MP24 (F) LOGIC UNIT MP6 (F) VR UNIT EP1 (F)MP14 (C) MP14 (C)MP6 (C)MP7 (C) MP22 (C) MP7 (C) MP22 (C) MP4 (C) MP11 (C) MP5 (C) MP12 (C)
SECTION 7 SEMI-CONDUCTOR INFORMATION 7 - 1 2SA1576 R (Symbol: FR)2SC4081 R (Symbol: BR)2SC4116 BL (Symbol: LL)2SC4405 3 (Symbol: OY3) 2SD1664 Q (Symbol: DA)2SK1740 (Symbol: IJ)2SK2171 4 (Symbol: KM)2SK508 K52 (Symbol: K52) DTC114 EU (Symbol: 14) XP4601 (Symbol: 5C) 2SK882 GR (Symbol: TGR) 2SC4673 D (Symbol: CO) 3SK131 MAS (Symbol: V11)DTA114 EU (Symbol: 14)DTA144 EU (Symbol: 16) XP4311 (Symbol: 3X)• TRANSISTOR AND FET’S B EC EC B EC BDG S DG S 2SC4117 BL (Symbol: CL) B EC B EC B C EC B C EC B EC B EC B EC E1 C2 B1C1 E2 B2 S G DG GS D D SG2 G1 1SS373 (Symbol: S4)1SS375 (Symbol: FH)1SV263 (Symbol: JV) 1SS302 (Symbol: C3)1SS355 (Symbol: A) 1SV265 (Symbol: LV)DAN222 (Symbol: N)HSB88WS (Symbol: Silver line)KV1470 (Symbol: F7) MA77 (Symbol: 4B)MA8051 M (Symbol: 5^1)NNCD6.2G (Symbol: 6.2G) • DIODES AK NC MA729 (Symbol: 2B)
8 - 1 8-1 PHONE AND VR BOARDS SECTION 8 BOARD LAYOUTS R122 R121 C123 C122 C121 L121 • VR BOARD R131 R141 J101 J101 to LOGIC board J451 R143 GND GND GND GND GND PB2L PB1L RFGL AFGL 5VL 1 10 • PHONE BOARD TOP VIEW
8 - 2 •PHONE BOARD BOTTOM VIEW J121 J101 J101 to LOGIC board J471 GND AFE AFE AFE ESPO ESPO ESPO AFO AFO AFO10 1
8 - 3 8-2 DISPLAY BOARD•TOP VIEW DS11 DS21 DS31DS41DS51 DS61DS71 DS12DS22 DS32 DS42DS52 DS62DS72 DS13DS23 DS33DS43 DS53DS63 DS73DS81 DS82 DS83
•BOTTOM VIEW 8 - 4 J101 R11 R21 R31 R41 R51 R61 R71 R81 R12 R22 R32 R42 R52 R62 R72 R82 C101Q11Q21Q31 Q41Q51 Q61 Q71Q81 IC101 J101 to LOGIC board J411 14V DIMV COM4 COM2 V1 V3 CL2 MGND GND COM3 COM1 V2 CL1 DO H5VL 2 16 1 15
8-3 LOGIC BOARD 8 - 5 R257 R256 R255 R254 C255 C254 C253 C252 C251 C206 C204 C205 C256 R112C231 R261 R260 R121 R123 R127 R129 R131W163 W162 W161R163 R162 R161 R142 R144 R146 R148 R150 R152 R154 R171 R173 R175 R177 R179 R280 R281 R284 R291 R289 R287 R272 R274 R276 R278 R286 R279 R282 R283 R292 R290 R288 R271 R273 R275 R277 R285R141C221 R143 R145 R147 R149 R151 R153 R155 R172 R174 R176 R178 R191 R193 R195 R197 R210 R208 R192 R194 R196 R211 R209 R122 R403 Q401R402 R404 W401R405 C401 Q391 R398 C394 C395 IC392 R397 D393R395 C392 R394 R393 D381 R512 R513IC391 R382 D382 R399 D401R401R423 Q421 R422 R421 R361 R362R396 C351 R391R392 C393 R511 R514Q512 Q511 R221C102 R223 R224 R225R198 C502 L503 J411 R124 R125 R126 R128 R130R335 R262R352 R351 Q351 X 111 IC101X112IC231 C203 C201 C105C202 R253 R252 R251 R258 R259 R231 C 111C104C103R201 R202 R203 R204 R205 R206 C112 C113 C114 C101 C352 IC401 IC351 R381 + + EP527 EP525 EP523 EP521 EP526 EP524 EP522 EP502 C454 EP501 C461C505 C452C503 C453C451 J521 J461 J451J491 1 L491 L492 1J541J501 L502L501 J471 D461 J411 to DISPLAY board J10114V DIMV COM4 COM2 V1 V3 CL2 MGND GND COM3 COM1 V2 CL1 DO H5VL 2 16 1 15 PST3 PST1 PCK DRES MDAT ISTB DSTB DSPSPST2 PCO2 PDAT MCK ASTB RSTB DINT PWRC216 1 15216 115216 115 CIVE GND SBSY AGRS RECS SALI FMNL AFGVCIV SPST RXS SQLS BEEP EMTI SML RFGV BATT HV GND GND AFE ISPO ESPO AFOQH5V 14V 8V 5V AFE ISPO ESPO AFO J471 to PHONE board J101 J451 to VR board J101 J461 to MAIN DIALJ501 to MAIN unit J1521 J541 to MAIN unit J1561 J521 to MAIN unit J1541AFO AFO ESPO AFE AFEAFO ESPO ESPO AFE GND 12 910 GND GND GND PB1L RFGLGND GND PB2L AFGL 5VL 109 21 5VL MUP MDN GND 4 1 J491 to INT SP P1 ISPO AFE2 1
8 - 6 C116 C117 C72 C75 C79 L204 Q82 Q93 C123D72 R236 R83 C325C92C94 R93 C118 R94 R102 C101 C103 C100 R98 C105R96 R97D91R95D1 R107R26 R37 R27 R38 R28 R39 R29R40 R30R41 R31R42 R32 R43 R33 R44 R34R45 R35 C37 C44 C38 L23 L26R46 R25R36 R24R23 R235C327 C110C23 W18 D92C99EP8 EP5 EP4 EP2 EP3 EP6 R108C 111 C53 C52C33C31 R115 C127 D94 Q21 R73 C30 C28 R49 C126 C71 C57EP7 C12 X1IC151IC201 L2 C13 C11 Q1R151 C151 Q151 C167R180 C3 C8 R7 C7R8R9 C9R11 R21 C21 R1 C16 R172 R178 C318C319C310 C314C202 C205 R222Q201C201 R201 C217R230 R228 W2 C203 C152 C153C155 W1 C6 L3L151 L152 C305L201L202 J2 C10 C59 C40 R47 R72 C120C121 D93 R110 C114 R109 C93 R91 R92 D82 L205 C77 C89Q97R80 C128 R117 C82 C85 C87 C323 C324 R12Q96 RL1 D81 L83 D71 L73 C76 L93 MP2 MP1 C86 J4 J3 MP5 J91 C106 C74 L71 L72 L91 L92 C119 L25 C24IC23 L22L27 L24 IC21 L4 L5 L1 J151 MP8 MP11 L153 C215 L203 C165 J1 IC22 L81 Q81 L82 C84 L94 Q71 R75 R85 R116 C124 R79C83 C78 C80 R76 C81 C122 Q72 R112 R103 R101 R100 C104 C102 R104 R10C326 R113 R53 R52 R50 R51 C36 C25 C26C27 C39 C1 R3R5Q2 C5 R6 R2 R153 R164 R165 R166 R167 R168 R169 R170 R154 R152 R155 R181 R182R156 R157 R158 R159 R160 R161 C156C154 C321 C317 C320 C322 C311 C312 C313 C316 C204R213R211R210 R209 R207R206 R205 R204 R202 R215 R214 R203 R208R216 R220 R219R218 R217 R212R221 C206 R233 C214 R232 R231 C207 C315R163 R162 C157R171 C164 R183R4 C4 C113 C34C54 C32R78 R55 C51C125R114 R48 R22 C55 C58 C29 C60 C56 C43 C42 C41C50R54 R71 R 111 C112C35 C115 C107 W19 Q3 C95 Q92 C108 C96C97 C98 R99Q91 C88 C90 R86 C91C73 Q4 C14D2C15 R81 + + + + J201 J2 to MAIN unit J1501 14V 8V 5V RECS GND PST2 PCO2 PDAT14V GND AAFO UNLC PST3 PST1 PCK DRES216 115 8-4 PLL UNIT
8-5 MAIN UNIT 8 - 7 C1351 IC1361 L1311IC1391 Q1381 L1411 C1422 C1417 C1418 IC1771C1754 IC1401 C1420 L1412C1414 C1412C361L362R152 R101 Q1311 D1412 D1413Q1382R 111 C1362 C1364 C1311 D1311 C1382C1381C1411 C1416R1413R1412C1393 R1312 C1321 R1772 C1771 R1313 R1314 C161 C162 C164 R172 R174R341 C173 R381 C371 R475 R477 C474 C473 R493R476R472 R742 R733 R734 D712D781D782 D762D761 D711 D713 D714 R711R712C711 C733 R713 C721R721C723 R724R791C791 R793C771 C772R775 R796C792 R794 R774 C724C725 C712R781 R751R748 R747R761R762 R763 C761 R743Q734 R783 R737 R740C736 R738 R472 R474C415 C738 D731C740R415C413R414 R411 R413 C471 R479R371 R372C391 R393 C372 R412 C422 R447 C446 C447 C1602C1601 C1603 R1061C1062 D1061 D861 D871 D763 D764 R873 R855 R785 R815 R825 C811R811 R802 IC811 C813R822 R820 C818 R883 R823R881 C814 R819 C782 R784C841 R852 C851 C871 C861 R863 R884 C882R894R911 C897C911 Q911R913 Q912 R915 C895C894R895 C1064R1065 R1051 D862 Q1066 Q1065 Q1064 D882Q1051C1502 R448 R449R443 C443C442 R442 C423 C425 R396R395C383 C384 C386 C381 R382 R383 C382 C346 C349 C330C331 C308C289 R301 C309C306C287C286 C285 C267C268 C247 C431 C401 R221 R181 C265C245C244C243 C229 C208C203C183 C187 C266 C332 C351 D172D342D302 D282 D262 D242 D322 C323 C325 C326C302 C284 C283R1372 C152D141 L132 D142 D151L162 L342 L172 L346 L371 L411 Q471 L491 Q731 Q732 L721 Q721 R736 L492C739C743 IC391 Q411 L421 C741Q442 Q441 L325 L305 L323L321 L302 L283 L264 L244 L384 R401L432 L224L222 L182 L203L201 L204 L184 IC562IC561 IC551 IC552 C2051C2024R1254 C1254IC1251 IC1281 C1258 C1257 C1259 L2011 C2016 IC2001C2013 L2041 C2041 IC1101 J1521 J1561 J1541 R898 L1001 R1024 R1022 C1022C1021 R832R836 R831 R1204D831 R1202R1201 R1205 C2035C1213R1260R1261R1263 R1262 C1282 R1292R1291 C1214 R1215 R1214 C1212 C1211 R1213 R1212 R1211 C2036 R2031 C2042 R2032 C2031 C2032 C2033 C2034 R1007 C1001 R2022C2023 C2001 R2002 R1031R1032R1102 C1103 R 1111R1109R 111 0 C1081 C912C1031R1033R1106 R1105 R1104 R1103 R1107R1271 C1271 C1005 R1005 C1003C1006C1004Q1001R1004C1002 R1002C1023R1023 R834R835 J1221 L284 L281 L262 L243 L241 C1376 C1371 R151 C133 C132 C131 C121D1381 R144 R143 C141C101 L131 L151 C 111 C1361 C1365 L1321 C1752 C1751 C1755 C1401 C1404L1771C1753 IC1751IC1411 C1394C1363 C1312 C1415 C1419 Q1772Q1771 C1416 C1421 R1774 C1756 C1402 C1403R1773R1771 D1771 C1414C1413 R1415 R1411 R1381 R1382C1392 R1311 L161 C170 L163 L341 L343 L324 L285L171 R361 L361 R362 L173 L345 L392 L413 L412 L444 IC1603L422 R444 L442 IC1602 C1051 C1066 C1067C1065 C1063IC1601 L733 D491 Q381 L382 Q382 L391 L326C175 L322 D301 L301 L303 L304 L265 L245 L431 L401L225 L205L223 L221 L202 J1231 L181 L183L282 L261 L263 L242D261 Q151 C151 C135 C134 C136 R141 C163 C341 C333 C322 C342 R171 C176C174 C350 R321 R281 C290 R261 R241 C248 C385 Q383 R386 C433 C432 C435 C436C434C230C269 C246C264 C263 C242 C225 C222 C223 C228 C227 C226 C224 C207 C206 C205 C204 C182C202C201 C221 D181D221 C181 C551 C552 C561 C562 Q2021 R897 R896 C1101 C1102 R1108 R1082 C1089 C1090 R1084C1272C1024C1217R1251 C1251 R1252 C1253R1259 R1258 C1294 C1293 R1256 R1281 R1293 C1281 R1253 C1255 R1255 C1256 R1257 C831 C1216 C1202 C1215 C1201 R833 R1021 R1272 Q1031 C913 R912 R914C896 IC1001 C1008 IC1211 C1260C1262 C1261 C1292 IC1201 J1271 R1232 R1234 C1231R1231 R1233 R1235 R1236 R587 R588 R589 R590 R591 R579 R580 R583 R592 R593R571 R572 R573 R574 R575 R576 R577 R578 R563 R564 R565 R566 R567 R568 R569 R570C184 C185 C186 D382 C188 C209R201C172C171 C345 C344 C329C328 C307 C288 R173 C352 R391 C394 Q391 Q472 C476 R478 R471 C411 C461 C462 R745 CP731R473 C475 R741 C492R491 R492 C731 C734 R722 C722 R723C781C742 R750 Q737 Q736R744 R746Q735 R749 R782 C726 R792 R772 R771 C773R773 R795 R725R731 C701 C732 C735 R735 R732 Q733 R739 C737 C393 R392 C397 R394 C396 R384R385 C395 C412 C424 C448 C444 R445 R1068 C1061 D872D1051R1053R1067 R1064 R874 C872 R864 C862 C852 R854 R893C893 R892 C892 D852C1010 R1001 C1007 C1009R1006 R1008 R2051 R2021 C2014 R2001 C1521C1085 R1101 R1081C2015 R2012C2011 C2012R2011 C2022 C2021R1003 Q891 C914 R891 C891 R875 R871 R872 R764 R765 C762 R814 R813 R812 R801 Q801 C801 R824 C816 J1501 R818 R821 R817 R816 R885 C881 R882R862 R851 R853 R841R861R865 R1066 R1062R1063 Q1063 Q1061 R1052 R446 C445C414C392 C1352 C1373 C1374 C1372 R1371 R1351 R1374 D1371 C321 C301 C281 C304 C305C303 C327C324 C261 C241 C262 C282D341 R142 J1351 F1352 F1351 R112 J 111 FI701 J781 J782L381 L385 J1522 X1001 J1081 L892 FI871 FI861 J783 J784 3LO BFO IC1291 C1296 L1291 C1295 L732 L461 L443L462FI461 FI761F1353 D1351 IC1371 FUSE 3A RL121C1353C1375 R102RL141 MP381 MP1411 MP491 2LO R1401 J1751J491C1391 J411 1LO L101 J101 J1311 L471 L701L731L441 L383 MP441 MP442X2021 L891 J884 J883L911 FI851 J811J881MP881 J882 J1241 1 IC731 L711 L712 J1321 J1701 D381 D371 D391 D372D392 D222 D202 D182 D851 D881 D783 D784 D732 D771D772 D773D774 FD2 J1521AFO ESPO ISPO AFE 5V 8V 14V H5VAFO ESPO ISPO AFE GND GND HVR BATT 151 16 2 151 16 2 151 16 2 to LOGIC board J541 RFGV SML EMTI BEEP SQLS RXS SPST CIVAFGV FMNL SALI RECS AGRS SBSY GND CIVE to LOGIC board J521 PWRC DINT PSTB ASTB MCK PDAT PCO2 PST2DSPS DSTB ISTB MDAT DRES PCK PST1 PST3 to PLL unit J2 DRES PCK PST1 PST3 UNLC AAFO GND 14VPDAT PCO2 PST2 GND RECS 5V 8V 14V216 115J1231 from optional unit UT-106 [DC 1N] [ANT2] (450 ½) (GND) [MUTE] [EXT SP] [REMOTE] [RS-232C] J1221 GND DSSR MCKR DSTR DRSRGND GND 5V MDTR DITR 2 10 91 DAFO AFE 4 1 J1561 J1541 J1271 MDAT BUSY 5V GNDSPST MCK SPCE SPCH28 17 from optional unit UT-102 to LOGIC board J501 J1501