Icom IC-M402 Service Manual

Also see for IC-M402: Instruction manual Service manual

Contents

11 - 1SECTION 11 VOLTAGE DIAGRAM11-1 LOGIC BOARDR1212 kQ42SC4116 BLQ22SC4116 BLQ32SB1132 RR1539 kR1710 kR1810 kR2118 kR20 18 kDIM3DIM2DS7FY1101 F-TRDIM1DS8FY1101 F-TRR26330R133.3 kR141 kR1647 kR1918 kR2218 kS5 S6 S7S1R1100 kS2R2100 kS3R3100 kS4BAND EXTENTIONR8327R1127R1027C200.01R86100 kC320.001C210.001DSC UP DNDTRSR6820DS4SML-311 YTDS3SML-311 YTH/LCHWX16CHDS6SML-311 YTDS5SML-311 YTR5820DSCUPDNCH16H/LDTRSCHWXR4100 kR810 k5VC70.01Q82SK1069 41234J3from Smart Microphone(HM-129)from/to main unit J6R73220 kKEYMDSENCC310.01R712.7 kR70820 kR6920 kR6620 kR5910 kR6720 kR6010 kR6820 kR6110 kC2210C230.01R6520 k R5810 kR5310 kR7220 k R5510 kR6220 k R6320 kR5610 kR6420 kR5710 kQ102SK1069 4R411 kR4247 k R431 k Q6DTC114EUD2ISS355Q9DTA114EU R3947 kC250.011234567 891011121314IC5TC74HC02AFC110.01R468.2 k R853.3 k C300.01R79100 kR5410 kR5015 kR4710 kQ112SK1069 4R511.5 kR5210 kQ72SA1576 RQ52SC4081 RR364.7 kR7747C260.01156234J1LCDACLDAICF3GND7 891011121314IC4TC74HC14AFR4439 kC120.01A01A12A23VSS4 SDA 5SCL 6WP 7VCC 8IC2HN58X2432TIC180.01C810Q1DAT144EUTMUTR933 kR87 100 kP10/TMOW1 P90/SEG33 75P11/TMOFL2P12/TMOFH3P13/TMIG4P14/IRQ4/ADTRG5P15/IRQ1/TMIC6P16/IRQ27P17/IRQ3/TMIF8X19X210VSS11OSC212OSC113TEST14RES15P20/SCK116P21/SI117P22/SO118P2319P2420P2521P2622P2723P30/PWM24P31/UD25 P60/SEG9 51P61/SEG10 52P62/SEG11 53P63/SEG12 54P64/SEG13 55P65/SEG14 56P66/SEG15 57P67/SEG16 58P70/SEG17 59P71/SEG18 60P72/SEG19 61P73/SEG20 62P74/SEG21 63P75/SEG22 64P76/SEG23 65P79/SEG24 66P80/SEG25 67P81/SEG26 68P82/SEG27 69P83/SEG28 70P84/SEG29 71P85/SEG30 72P86/SEG31 73P87/SEG32 74IC1HD6473847 RHR76100 kR7447 kR75150 kR78100 kEXOERCVSENDSMUTEMMUTEOUT 1VDD 2VSS 3NC4CD5IC6S-80942 ANMP-DD6 R4539 kR84100 kPTTSPTTMRMUTSRMUTMPCKRESDSDECH/LCHWXCH16EXOECONT2CONT1BEEPMX1CR-691C2427 PC28 24 PR71 MSEG24SEG23SEG22SEG21SEG20SEG19SEG18SEG17SEG16SEG15SEG14SEG13SEG12SEG11SEG8SEG7SEG10SEG9SEG6SEG5SEG4SEG3SEG2SEG1SEG0DIM2DIM1EDAECKBPLVLICFCEXSTBPDATAPSTBR80 10 kR81 10 kR82 100 kC100.027C140.01STRB1DATA2CLK3Q14Q25Q36Q47VSS8 QS 9Q’S 10Q8 11Q7 12Q6 13Q5 14VDD 165V5VNMEAINMEAIHVSHVSDTRSDSC5V5VDSENCDSENC1 DSENC2 DSENC3DSENC4 DSENC5DSENC6 DSENC7DSENC5V 5VUP DNHVSPTTKEYMKEYM5V5VCH16CHWX5VNMEAI5VHVSDSDECBEEPMICFCDIM3RRXDRTXDDIM3CONT1CONT2ICFCOENA 15IC3BU4094BCFVPDATAPCKRMUTMRMUTSPTTMPTTSEXSTB1243J2fromexternalGPSfrom/toRemoto MIC(HM-127)NMEA+NMEAIC7PC357N6TC130.01R34470D1ISS355C90.0047R356.8 k C270.01S27DS1TTR5341S28S13S14S17S16S15S20S19S18S21S23S22S24S26S25C0C2C1C3S2S1S3S5S4S7S6S10S8S11S12S91234765109811131214161517191820222123252427262830293231SEG26SEG27SEG12SEG13SEG16SEG15SEG14SEG19SEG18SEG17SEG20SEG22SEG21SEG23SEG25SEG24COM0COM2COM1COM3SEG1SEG0SEG2SEG4SEG3SEG6SEG5SEG9SEG7SEG10SEG11SEG817 1819 2021 2223 2425 2627 28293031 32343336351 23 45 67 891011 121413161538374039SP+SPC20.001HVSBEEPMBPLVLBEEPMBPLVLRCVSENDTMUTTXDETDSENCDSDECWXDECHI/LOSQLVPTTPTTSBPFVPTTMUNLKPSTBPCKSQLRMUTSRMUTMSMUTEMMUTEPDATARCV5V5VSPSPSP+SP+J4HVSHVSSENDTMUTTXDETDSENCDSDECWXDECHI/LOSQLVPTTPTTSBPFVPTTMUNLKPSTBPCKSQLRMUTSRMUTMSMUTEMMUTEPDATAC4470 PC30.001C6470 PC50.001to Internal SpeakerC10.001P32/RESOP33/SCK3126DIM3HI/LORRXDRTXDBPFVCSEG3CSEG2CSEG1COM3COM2COM1COM0DSENC0DSENC1DSENC2DSENC3DSENC4DSENC5DSENC6DSENC727P34/RXD3128P57/WKP7/SEG850 P56/WKP6/SEG749 P55/WKP5/SEG648 P54/WKP4/SEG547 P53/WKP3/SEG446 P52/WKP2/SEG345 P51/WKP1/SEG244 P50/WKP0/SEG143 PA0/COM142 PA1/COM241 PA2/COM340 PA3/COM439 VCC38 V037 V136 V235 V334 VSS33 CVCC32P36/AEVH30P37/AEVL31P35/TXD3129UNLKDNUPDSCDTRSPTTKEYMTXDETLBATSQLSQLVWXDECBENMEAI/TMUTSEG27SEG26SEG25AVSSPC3/AN11PC2/AN10P91/SEG34P92/SEG35P93/SEG36P94/SEG37/MP95/SEG38/DOP96/SEG39/CL2P97/SEG40/CL1P40/SCK32P41/RXD32P42/TXD32P43/IRQ0AVCCPB0/AN0PB1/AN1PB2/AN2PB3/AN3PB4/AN4PB5/AN5PB6/AN6PC0/AN8PB7/AN7PC1/AN91009998767778798081828384858687888990919293949695971234564.9813.81 VICF3_ON 0 VHM-127_ON 4.98 V9.83 MHz3.8 Vp-p