Icom IC-M604A Service Manual - Page 44

SECTION 12 VOLTAGE DIAGRAMS 12-1 LOGIC UNIT C127 47P C124 47P C143 47P C125 47P C128 47P C126 47P S5V S5V R83 10K R82 10K R81 47K C120 47P C116 47P C114 47P C112 47P C110 47P C109 0.001 C119 47P C118 47P C117 47P C115 47P C113 47P C111 47P SQL CP8 CP06VR C107 47P C105 47P C103 0.001 C101 0.001 C106 47P C104 47P J1 26FLT-SM2-TB GND WXDEC RXADJ GND 8V PCK PSTB ATT1 H/L GND GND TXDET GND 25 23 21 19 17 15 13 11 9 7 5 3 1 26 24 22 20 18 16 14 12 10 8 6 4 2 TEMP SQL DEC1 DEC2 S5V GND PDATA UNLK ATT2 TMUTE DASTB SEND GND to MAIN UNIT J1 OPC-1198 J2 28FLT-SM2-TB SCOUT 27 28 AF AF GND BEEP RMUTE OPSTB GND MICM FOG DATAH2M DATAMH2 DATAMH1 25 23 21 19 17 15 13 11 9 7 5 3 1 26 24 22 20 18 16 14 12 10 8 6 4 2 GND HV SP- SP- DSC OPTIN SCON DATAMN DATANM EPOE PWRON EPSTB DATAH1M to AF UNIT J1 OPC-1200 C108 0.001 RXADJ WXDEC TEMP SQL DEC1 DEC2 S5V PDATA UNLK ATT2 TMUTE DASTB SEND TXDET H/L ATT1 PSTB PCK 8V BEEP AF SCOUT HV SP- DSC OPTIN SCON DATAMN DATANM EPOE PWRON EPSTB DATAH1M DATAMH1 DATAMH2 DATAH2M FOG MICM OPSTB RMUTE HV S5V 8V C71 0.001 C72 10 C5 0.47 R10 47K C4 0.027 R8 12K C73 R7 0.01 47 S5V C121 0.001 13.67V HV D6 KDS4148U IC8 TA78L05F HVIN I O G C74 10 4.5V L5V R9 C6 0.01 33K K1 K2 K3 S2 S3 S4 KEY KEY KEY 1 2 3 K4 K5 K6 S5 KEY S6 KEY S7 KEY 4 5 6 K7 K8 K9 S8 KEY S9 KEY S10 KEY 7 8 9 KCE K0 KENT S11 KEY CE S12 KEY 0 S13 KEY ENT KMENU KCLR KF S14 KEY MENU S17 KEY H/L S15 KEY CLR S16 KEY F KHL KCHWX KCH16 KDTRS S18 KEY S19 KEY CH/WX CH16 S5V S20 KEY DTRS R18 100K R17 100K K8 S5V K9 RES KPWR IC2 S-80942CNMC 1 2 3 OUT VDD VSS CD 5 NC 4 R6 100K S1 SPPH22014A L5V S5V 8V DIM-7:13.67V DIM-1: 5.10V DIM-OFF: 0V Q17 KTA1644 C142 47P C140 47P C138 47P C136 47P C134 47P C131 47P C129 47P C130 47P C132 47P C133 47P C135 47P C137 47P C139 47P C141 47P C27 0.1 R44 10K C26 10 SML-311YT SML-311YT SML-311YT DS17 SML-311YT SML-311YT SML-311YT DS14 SML-311YT SML-311YT SML-311YT DS11 SML-311YT SML-311YT SML-311YT DS8 FY1101F FY1101F FY1101F DS5 FY1101F FY1101F FY1101F DS2 FY1101F FY1101F FY1101F DS23 FY1101F FY1101F FY1101F DS20 J6 06FLT-SM2-TB CMDPWR2 GND 5 3 6 4 CMDPWR1 1 2 TO CONNECT UNIT J6 OPC-1659 C154 0.001 C153 0.001 C152 0.001 C151 0.001 CMDPWR2 KPWRH2 ICF3 CMDPWR1 C34 0.01 AF SP- S5V HV LBAT R52 150K R40 120 DS22 DS21 R39 120 DS25 DS24 R51 120 DS4 DS3 R50 120 DS7 DS6 R49 220 DS10 DS9 R48 220 DS13 DS12 R47 220 DS16 DS15 R46 220 DS19 DS18 R45 3.3K R43 1K 8V R41 39K Q16 Q15 KTC4075 KTC4075 R42 47K C25 0.1 0.1 C35 47K R53 SP- S5V AF LOGIC UNIT Explanatory notes VOLTAGE LINE RX LINE 12 - 1 C17 0.1 R37 12K C19 27P C18 27P ICF3 D1 1SS372 Q4 KTC2875 R31 1K DATAMC R36 100K R34 47K L5V 15K R33 R32 1K DATACM 0.1 C12 L5V R38 100K KPWRH2 DATANM DATAMN PDATA PCK MICM RES C15 470P FWE RMUTE TMUTE SEND H/L 9.8304MHz 0.4Vp-p L5V FWE R35 3.3K L5V L5V X1 CR-691 L5V ATT2C ATT1C 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 P35/SCK1/SCK4/SCL0/IRQ5 P36/RXD4 NC NC P37/TXD4 PG0/CAS/IRQ6 PG1/CS3/OE/IRQ7 PG2/CS2 PG3/CS1 PG4/CS0 WDTOVF NC PLLCAP PLLVSS RES NMI STBY FWE XTAL NC EXTAL VSS OSC1 OSC2 PVCC1 RF7/ F VSS PF6/AS/LCAS PF5/RD PF4/HWR PF3/LWR/ADTRG/IRQ3 PF2/LCAS/WAIT/BREQO PF1/BACK/BUZZ PF0/BREQ/IRQ2 NC NC AVCC VREF C20 0.1 C21 0.01 S5V ATT2 Q12 KRA304 S5V ATT1 Q13 KRA304 DIM-7: 4.76V DIM-1: 2.10V DIM-OFF: 0V S5V R72 JPW MODEL C44 0.01 L5V RES FWE C11 LBAT BEEP WXDEC SQL TXDET TEMP KEYM SQLV DIAL1 DIAL2 DIAL3 DIAL4 PTT 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 P40/AN0 P41/AN1 P42/AN2 P43/AN3 P44/AN4 P45/AN5 P46/AN6/DA0 P47/AN7/DA1 P90/AN8 P91/AN9 P92/AN10 P93/AN11 P94/AN12 P95/AN13 P96/AN14/DA2 P97/AN15/DA3 AVSS P70/TMRI01/TMCI01/DREQ0/CS4 P71/TMRI23/TMCI23/DREQ1/CS5 P72/TMO0/TEND0/CS6 P73/TMO1/TEND1/CS7 P74/TMO2/MRES P75/TMO3/SCK3 P76/RXD3 P77/TXD3 MD0 P34/RXD1/SDA0 P33/TXD1/SCL1 VSS P32/SCK0/SDA1/IRQ4 PVCC2 P31/RXD0/IRRXD P30/TXD0/IRTXD PD7/D15 PD6/D14 PD5/D13 PD4/D12 PD3/D11 PD2/D10 PD1/D9 PVCC1 PD0/D8 VSS PE7/D7 PE6/D6 PE5/D5 PE4/D4 PE3/D3 PE2/D2 PE1/D1 PE0/D0 P17/PO15/TIOCB2/PWM3/TCLKD 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 DATAH1M 0.1 DATAMH1 KPWRH1 DATACM DATAMC ECK EDATA K7 K6 K5 K4 K3 K2 K1 K0 KMENU KHL KCHWX KCH16 KENT KCE DSC MODEL DIM S5V L5V IC1 HD64F2633RF28 SCON OPSTB EPOE EPSTB DATAH2M DATAMH2 DASTB PSTB SCOUT R23 12K KF KCLR KDTRS 29 LDB7 LDB6 LDB5 LDB4 LDB3 LDB2 LDB1 LDB0 LWR LRS LRESETB LCS1B EDATA ECK C58 0.01 C57 0.1 R15 100K R16 100K R14 100K R13 100K R12 100K C60 0.01 C59 0.01 L5V 3.3V IC6 TC74LCXR164245 L5V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1DIR 1B1 1B2 GND 1B3 1B4 VCCB 1B5 1B6 GND 1B7 1B8 2B1 2B2 GND 2B3 2B4 VCCB 2B5 2B6 GND 2B7 2B8 2DIR 1OE 1A1 1A2 GND 1A3 1A4 VCCA 1A5 1A6 GND 1A7 1A8 2A1 2A2 GND 2A3 2A4 VCCA 2A5 2A6 GND 2A7 2A8 2OE 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 3.3V C55 0.1 C56 10 IC5 S-817B33AMC 1 2 3 GND VIN VOUT NC 5 NC 4 C61 2.2 3.28V C64 2.2 C63 2.2 J3 27FLZ-SM2-TB C62 C66 C68 1 1 CS1B RESETB RS RW_WR E_RD DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 GND VDD VOUT C3+ C3- C1+ C1- C2+ C2- V0 V1 V2 V3 V4 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 2.2 C65 C67 C69 4.97V 1 1 1 L5V L5V 28 R5 10K R4 10K C2 0.01 P16/PO14/TIOCA2/PWM2/IRQ1 P15/PO13/TIOCB1/TCLKC NC NC P14/PO12/TIOCA1/IRQ0 P13/PO11/TIOCD0/TCLKB/A23 P12/PO10/TIOCC0/TCLKA/A22 P11/PO9/TIOCB0/DACK1/A21 P10/PO8/TIOCA0/DACK0/A20 VSS PA3/A19/SCK2 PA2/A18/RXD2 PA1/A17/TXD2 PA0/A16 PB7/A15/TIOCB5 PB6/A14/TIOCA5 PB5/A13/TIOCB4 PB4/A12/TIOCA4 PB3/A11/TIOCD3 PB2/A10/TIOCC3 PB1/A9/TIOCB3 PVCC1 PB0/A8/TIOCA3 VSS PC7/A7/PWM1 PC6/A6/PWM0 PC5/A5 VCL PC4/A4 VSS PC3/A3 PC2/A2 PC1/A1 PC0/A0 NC NC MD2 MD1 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 DEC1 FOG DEC2 CMDPWR2 CMDPWR1 PWRON CLK RXD TXD RXADJ CP6 CP10S TEST R25 1.2K CLK LDB7 LDB6 LDB5 LDB4 LDB3 LDB2 LDB1 LDB0 LCS1B LWR LRS R24 1.2K RXD TXD BE CP5 CF20 L5V RES FWE HANGER C9 10 KDTRS UNLK OPTIN LRESETB C8 0.1 RES FWE L5V MD2 MD1 RES FWE L5V S5V SQLV DIAL1 DIAL2 DIAL3 DIAL4 HANGER R55 10K R56 10K R57 10K R58 10K C37 0.01 C7 0.1 EDATA ECK IC4 HN58X2464TI 1 2 3 4 A0 A1 A2 VSS VCC WP SCL SDA 8 7 6 5 MD1 MD2 TXD RXD CLK L5V RES FWE 9 8 7 6 5 4 3 GND 2 1 10 11 J8 B9B-ZR-SM4-TF J7 B8B-ZR-SM4-TF S5V SQLV GND DIAL1 DILA2 DIAL3 DIAL4 GND 1 2 3 4 5 6 7 8 SQL UNIT 1 SQL5V 2 SQLV 3 SQLG DIAL UNIT W1 1 2 3 4 5 1 2 3 4 5 DIAL1 DIAL2 DIAL3 DIAL4 GND OPC-1187 C42 0.001 C41 0.001 C40 0.001 C39 0.001 C38 0.1 R29 12K R28 12K R27 12K CP3 AF AF CP10S SP+ SP1 L5V SP- CP4 SP- CP10S SP- D3 MA8062 C47 470P D4 MA8062 C46 0.01 D5 MA8062 C48 0.01 S5V R63 10K C51 100P C52 100P R62 100K KEYM PTT HANGER R66 100 R65 1K R64 1K C49 47P C50 47P J4 B6B-PH-SM4-TB KEY GND PTT HANG SP- AF 1 2 3 4 5 6 TO FRONT W1 OPC-1658 UNIT SP- KEY HANG 1 7 SP+ MIC PTT 2 8 6 GND MICG 3 5 4 J7 MIC 2 TO AF UNIT 1 J7 J11 MICG MIC 2 TO AF UNIT 1 J11 RES FWE L5V SP- S5V AF C53 0.01 KEY GND PTT HANG SP- AF 1 2 3 4 5 6 J5 B6B-PH-SM4-TB TO CHASSIS UNIT W7 OPC-1212 KEY SP- MIC SP+ HANG MICG GND PTT 6 7 5 8 4 1 3 2