Icom IC-M23 Service Manual
Also see for IC-M23: Instruction manual
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10 - 1SECTION 10. VOLTAGE DIAGRAM*: Refer to the PARTS LIST for the value and name of component.• MAIN UNIT (1/2)TX:0.00VRX:3.70V1.45VTX:2.98VRX:0.00V1.45V1.43V2.99VLEDON:2.98V4.915MHz1.76VP-PC2060.001R27322KC3850.01DS246TAK-359201 SEG02 SEG13 SEG24 SEG35 SEG46 SEG57 SEG68 SEG79 SEG810 SEG911 SEG1012 SEG1113 SEG1214 SEG1315 SEG1416 SEG1517 SEG1618 SEG1719 SEG1820 SEG1921 SEG2022 SEG2123 COM024 COM125 COM2R34310KR272120KR255270KC2604.7R20739KC3821C1940.01J2511234R37882KR388470KR240220C2050.018CP408R34110KR41547KC3000.0033IC200231C2830.1S324C4380.1C37139PR41410KC37030PDS244LNJ426W83RAR192390D356L1SS400R27124KR2781KR361EXB28V102JIC365231C377820PX360CR-911C4370.47C2630.01S328R26247KR2044.7KR395100KR28610KIC190M62364FP1 VIN12 VOUT13 VOUT24 VIN25 VDD6 LD7 CLK8 DI9 VIN310 VOUT311 VOUT412 VIN4 13VIN514VOUT515VOUT616VIN617DO18VDAREF19RESET20GND21VIN722VOUT723VOUT824VIN8DS245LNJ426W83RAIC200131214R20618KR25618KC25110LMV324IPWIC200V+4GND11R63410KR277100KR2574.7KR374390KR202100KIC360UPD780318GC-513-9EB-A1 P30/TO02 P31/TI003 P32/TI014 P33/TO50/TI505 P34/TO51/TI516 P20/RXD0/SI37 P21/TXD0/SO38 P22/ SCK39 P23/SI110 P24/SO111 P25/SCK112 P00/INTP013 P01/INTP114 P02/INTP215 P03/INTP3/ADTRG16 P04/INTP417 P05/INTP5/BUZ/PCL18 VPP19 XT220 XT121 VSS122 VDD123 X224 X125 RESET26 AVREF027 P10/ANI028 P11/ANI129 P12/ANI230 P13/ANI331P14/ANI432P15/ANI533P16/ANI634P17/ANI735ANI836ANI937AVSS038P120/AO039AVREF140CAPH41CAPL42VLCDC43VLC044VLC145VLC246COM047COM148COM249COM350SCOM051S052S153S254S355S456S557S658S759S860S961S1062S1163S1264S1365S1466S1567S1668S1769S1870S1971S2072S2173S2274S2375P90/S2476P91/S2577P92/S2678P93/S2779P94/S2880P95/S2981P96/S3082P97/S3183P80/S3284P81/S3385P82/S3486P83/S3587P84/S2688P85/S3789P86/S3890P87/S3991 VSS092 VDD093 P6094 P6195 P6296 P6397 P6498 P6599 P66100 P67101 P40102 P41103 P42104 P43105 P44106 P45107 P46108 P47109 P50110 P51111 P52112 P53113 P54114 P55115 P56116 P57117 P70/TO4118 P71/TI4119 P72/TO52120 P73/TI52C6120.047R26318KR4522.2KR2791.5KC2020.1D355L1SS400C4020.1R6490C6130.047R43512KR264EXB28V104JC2640.0056IC200657C3610.047R41210KR2012.2KC2540.1Q250LDTC144EER193470R2058.2KC1930.01CP405R39147KR3006.8KCP402R430270KS326C3400.01S323C37947PR340100KC2570.01DS242LNJ426W83RAR3531KR433100KC4000.1Q230RSQ035P03TR123 456C265100PQ350LDTC144TER3731MR260220KC19210CP404C3930.047IC362TPA0211DGN1IN 2SHUTDOWN 3VDD 4BYPASS5 VO+6 SE/ BTL7 GND8 VO-9C3720.1R3960CP410R230330KC2000.01C1910.01R37982KC3860.47C4041C3650.047C3780.0047S327C3750.47S250SW-149D350KDS122S321C3660.047R242EXB28V821JR2584.7KR43482KC2620.01C2070.1C4640.1*MP22IC200LMV324IPW9108DS243LNJ426W83RAC2311C3640.047IC341NJU7704F03A1CD 2VSS 3MR4 VOUT5 VDDIC340S-24C64CI-T8T1U31 A02 A13 A24 VSS 5SDA6SCL7WP8VCCS320DS240SML-512WWR37782KR2533.3KC3740.47R2701KR376100KR25233KR4322.7KR450330MC250EM6027P-46C33-GC2880.068C3730.47R231330S322CP401R4134.7K*C619C3600.01R3511KC2520.001R47810K*C367R26156KCP360DS241SML-512WWC4350.22R371470KCP409C38910C3410.068R251270C2850.1IC260CD4066BPWR1 I/O12 O/I13 O/I24 I/O25 CONT26 CONT37 VSS 8I/O39O/I310O/I411I/O412CONT413CONT114VDDR21415KR35215KC467120PR3721.5MR27622KC28210Q231KTC811U123 456Q240LMUN5213DW1123456R468220R283100KC4360.47CP406R194100KC2660.027R4514.7KC4014.7R203220KR4311KCP400R213100KC2610.1R2121.5KIC365LMV358IPWV+8GND4C3630.047R40239KSEG21SEG20SEG19SEG18SEG17SEG16SEG15SEG14SEG13SEG12SEG10SEG11SEG9SEG8SEG7SEG6SEG5SEG4SEG3SEG2SEG1SEG0COM1COM2COM0MCONDETOCOM0COM1COM2SEG0SEG1SEG2SEG3SEG4SEG5SEG6SEG7SEG8SEG9SEG10SEG11SEG12SEG13SEG14SEG15SEG16SEG17SEG18SEG19SEG20SEG21PONDETMSPTTINTXMS16/9CH/WXUPDOWNFAVVOL/SQLSCANESCK16/9UPDOWNSCANCH/WXH/LFAVVOL/SQLH/LPTTMTDECWDECVFCONPCONT1CONSQLOESDABEEPMODCCMODEPSSDATAOATISNOISVRSSIVBATTVERXDIETXDOESCKESDARESRESVPPDASTSCKSDATALOINVTDETVATISMICMSAFVSM3VSR3VST3VSSDATATEMPVMICINVPPWDECVAFVSVOLOUTAFVDETINMICOMSENSFDETPTTSWATXDCVATXMICGPWSWPLSTBSCLKSCKDASTBDASTUNLKBEEPCRESETSWCTRLELOWMODPTTMDETMSMICGMICMSLEDSLCDSLEDI-RLEDI-GLOWV3VSBTEMPVRESVINCPU3V CPU3V CPU3VCPU3VETXDOERXDICLONEPTTINM3VM3VPSWHVDAST |
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