Icom IC-M604A Service Manual - Page 42

SECTION 10 BLOCK DIAGRAM HM-126R CHASSIS UNIT HM-126R FRONT UNIT SP1 DIAL UNIT S1 UP E DN ENCODER SQL UNIT S5V SQLV VR UNIT VOL1 VOL2 DS1 HLM7784-010100 IC6 TC74LCXR164245 LCD MODULE BUFF IC5 S-817B33AMC L5V 3.3V REG VCC Q15,16 KTC4075x2 Q17 KTA1664 DIM CONT DS8-19 SML311YTx12 DS2-7,20-25 FY1101Fx12 IC1 FD64F2633RF28 CPU Q4 KTC2875 D1 1SS372 CI-V I/F ICF3 KEY BOARD X1 CR-691 9.8304MHz IC4 HN58X2464TI EEPROM IC2 S-80942CNMC D6 KDS4148U HV RESET IC8 TA78L05F L5V L5V HV REG LOGIC UNIT Explanatory notes VOLTAGE LINE TX LINE RX LINE COMMON LINE MICM DSC SCOUT FOG PWRON MAIN UNIT WXDEC IC3a NJM2902V LPF SQL IC4 NJM2211M (#26,27) ATIS DECODER IC3b NJM2902V (#26,27) HPF IC2 NJM2125F SQL AMP DEC1 DEC2 BUFF IC5 BU4584BFV IC9 NJM2211M DSC DECODER IC3c,d NJM2902V BPF PCON D/A 5V IC15 M62363FP D35 1SV288 IC11 TC4W53F RXADJ IC1 TA31136FNG D12 MA8036 X1 CDBKB450KCAY24 FM DET FI3 CFWM450E CERAMIC BPF 2ND IF AMP 2ND MIX NOISE AMP NOISE DET 2ND LO BUFF IC6 TA31136FNG D22 MA8036 X2 CDBKB450KCAY24 FI6 ALFYM450F=K CERAMIC BPF FM DET 2ND IF AMP 2ND MIX NOISE AMP NOISE DET 2ND LO BUFF X4 CR-827 15.3MHz LOOP FIL PLL IC12 UPD3140GS 8V R8 SHIFT SW Q21 DTA144EU Q22 DTC144EU D41 1SV308 TX/ CH70 VCO Q17 2SC4116 RIPPLE 8V FIL Q18 PMBFJ310 D37,39,40 1SV214x3 MOD BEEP MICM RMUTE AF MUTE Q7 2SC3326 D5 DAP202K Q9 2SC4116 RL2 D7 1SS355 RELAY IC3 LA4425A AF AMP DET IC17,18 BU4094BCFVx2 EXPAND Q13 2SJ144 AF MUTE Q11,12 2SC4116x2 BPF Q18 2SK1069 BUFF IC4 BU4066BCF INCHM A INCMH B AFSUB C MICM D IC6b M5218AFP MIC AMP IC6a M5218AFP MIC AMP AF UNIT Q2 2SC4215 D15 MA742 IF AMP Q16 2SC4116 X2 Q10 2SC4215 IF AMP X3 CR-804 21.25MHz FI1 FL-404 XTAL BPF 30.15MHz R8 Q11 2SC4116 RIPPLE FIL LOOP FIL Q3,4 PMBFJ310x2 D11 HSB88WS IF AMP BPF RX VCO Q12 PMBFJ310 D32,33 HVC358Bx2 Q23 2SC5110 BUFF Q13 2SC4215 BUFF Q14 2SC4215 BUFF FI4 FL-368 FI5 FL-399 XTAL BPF 21.7MHz Q8,9 PMBFJ310x2 IF AMP D21 HSB88WS BRF TX/RX SW Q35 2SA1577 Q36 DTC144EU T8 T8 CTRL D42,43 MA77x2 SEND PRE DRIVE Q28 2SC3775 Q1 3SK294 RF AMP CH70 Q7 3SK294 RF AMP YGR AMP Q30 2SC3775 D44 1SS355 D3,4 1SV307x2(#21,22) BPF ATT ATT1 ATT2 D1,D46 L308CCBx2 ANT SW LPF IC13 RA35H1516M PWR AMP HV PCON Q32 DTC144TU D47,48 HSM88ASRx2 RF OUT DET TXDET IC14 NJM2107F Q37 DTC144TU D49 MA8051 Q33 DTC144EU APC CTRL PWR H/L CTRL ANT Q15 2SC4215 BUFF Q19 2SC4215 BUFF Q27 2SC5110 BUFF IC8b M5218AFP LPF IC8a M5218AFP IDC IC7 BU4066BCF MIC/DSC A SCOUT B STRU C STRU D IC5 BU4066BCF HAILOUT A FOGC B HAILIN C SCOUT D OPTION SCRAM UNIT 8V IC2 TA78L05F 5V +5 REG R8 8V Q1 2SB1132 5V Q2 DTC144EU R8 R8 CTRL EL VOL IC11 M5222FP IC14 NJM2107F IC9a M5218AFP BUFF IC1 TA7808S +8 REG VCC IC10 TA8225LQ AF AMP 12V Q51 2SB1143 Q52,53 2SD1664x2 Q21 2SC4116 RL3 D11 1SS355 RELAY MIC AMP IC9b M5218AFP HLC DATANM (GPS) IC19 TC7S14FU BUFF IC12 PC357N D12 1SS355 PHOTO COUPLER IC20 NJM2017F BUFF DATANM (NMEA) BUFF Q22 2SC4081 Q23 DTC144EU D13 DA204K D14 MA8062 IC13e,f BU4584BFV Q24 2SK1069 Q25 2SC4081 Q26 2SA1576 BUFF IC16 BU4066BCF SPS1 A MICS1 B MICS2 C SPS2 D IC13a,b BU4584BFV Q28 2SK1069 Q29 2SC4081 Q30 2SA1576 BUFF HV Q3 DTC144EU Q4 2SA1577 D2 1SS355 PWR CTRL RL1 HV HV REVERSE CONNECT PROTECT D1 DSA3A1 CHASSIS UNIT HAIL SP CONNECT UNIT EXT SP (OPTION) NMEA IN + NMEA IN - External GPS NMEA OUT COMON1 OPTION1 HM-162 or HM-157 PWR CTRL Q1 TPC6104 Q2 KRC404 COMON2 PWR CTRL Q3 TPC6104 Q4 KRC404 OPTION2 HM-162 or HM-157 10 - 1