Icom Ic4008a/Mk2 Uhf Fm Tranciever Service Manual
Have a look at the manual Icom Ic4008a/Mk2 Uhf Fm Tranciever Service Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 45 Icom manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
SECTION 9 BOARD LAYOUTS 9-1 MAIN UNIT •TOP VIEW (IC-4008A) 9 - 1 C20 R98R74 R76 C53 C60 IC5 C55 C88 R78 W7 C80 R42 R12 R46 R50 C5 R31 R118C3 R9 R110 C25 C7 C79 C4 Q6 R13 Q3R10R202C35 C34 R45R36 C36 C31 R43 R37R41 C32 R38 C90 C8 Q7 MC1 C64 Q25 D4 C62 C65 C89R77C67R80Q18 C17 C52C18 C49 C48 C81 R23C63 C97 C96 R26 Q11 Q14 Q27 Q101 D5Q28 DS2 R114 R200 R119 R115 R201C42 C9 C75 R89C71 C74R90 R49 D101 D2DS1 C95 R22 R27 C50 W3 R24 R25 R55 R56 C15 R61 C57 IC6
9 - 2 •BOTTOM VIEW (IC-4008A) R58R88 R54 Q10 C21 C47 C44 C72 R87 C59 R106C82 R112 C46 C87 R103 C51 R62 C92 C94 R97R63 C45 R79 C86 R68 R69IC3 Q23 R86 IC9 J4J1J3 S1 X1Q5 C6 C29 R6 R7 R5R4 R40 R105 R32 R34 C26 C40C27 C11 R33R2 R108 W1 W4 R60 Q1C73 C83 R51 R52 C93 C24 R53 C98R39 R102Q2C28 C91 C10 R14 R95 R35 Q12 Q29 R64 R99 R100 R101 IC1 R65 R66 R81 R72 C56 C54 R94C61 R96 R57 R70 R71 R67C1 C85 IC2 R30 PSC BATT MOD T+3 VOL R+3 GNDUNLK CK D ATA STB SQL SENS AF 13 1 214J4 to RF unit J2
9 - 3 C57 IC6 C20 Q14 IC5 C63 Q27 Q11R26 R49 W3 C74 D303D5 DS2 C55 C17C52C18C48 C49 R23 R114 R302R89C9 C42 C75 R90 C71 Q28D101 C97 R74 R76 R98 C53 C60 C81 C96 D2DS1 C95 R61C15R22 R27 C50 R24 R25 R56R55 C88 R78 Q18 Q25 D4 W7 C80 C64 C67C62 R42 R43 C90 MC1 R37 R46 R13 C79 C4 R50 C5C7 C8 Q7 Q3 Q6 R12 C34 R45R36 C36 C31 R202 R10 R118 R31 R110 C25 R9 C3C35 R41 C32 R38 C65 R77 C89R80
9 - 4 R58 IC9 C6 IC2 C29 C73 R39 R99 R100 R101 R35 C91 C10 R14R64 W1 W4 Q1 R60 R108R2 R4 R5 Q2Q12 Q29 C28 R102 R40 R32 R105 C26 C27 C40 R95C11 R34 R33 R65 R6 R7 C24 R53 R66C1 C85 R30 C83 R51 R52 C93 C98 Q10 C59 C72 C82 J1 S1J3 Q23 R87 R106 R301 R112 R81 R72 C61 C56 C54 R94 C46 R63 C45 R79 C87 X1 C86 IC1 R103 R57 R96 R70 R71 R67 C92 C94 C51R97 R62 R69 R68IC3J4Q5 Q44R54 R88 C21R86 C47 PSC BATT MOD T+3 VOL R+3 GNDUNLK CK D ATA STB SQL SENS AF 13 1 214J4 to RF unit J2
9 - 5 9-2 RF UNIT •TOP VIEW R69 R67 R71 R66 C89 R68 C96 L6 L204L203 D103 L5 L23 C90C36C4 R12 C70 C23 R86Q14Q13D9 D8 C81 C82 C48C43 C86 IC1 R64 R65 R32R27 C13 R60 R19 R4 C28 C3L25 C67 R58 Q2 J2 R5 C46 L1 C11C72R209R213R202 W202 W201L201 C201 C203 C204 L202 C26 Q201 Q202 R205R93 C87C62C61 C18 C17R10 R45W4 W6 L15 L208 W5 C68R62 C206 C202 C65 C208 C9 C30 L205 C44C31 D7 C207 C12 C10 C8 L10 Q15 GND R+3 VOL T+3 MOD BATT PSCAF SENS SQL STB D ATA CK UNLK 1 13 14 2J2 to MAIN unit J4
9 - 6 •BOTTOM VIEW C79 C83 X1 C63 R52 R88 C15 C16 C69 C55 R36 C57 L14 C64 R34 C52 R31 C53 Q6L13 R54 C50 R30 R29 C20 L11 D4 D5 R35 R33 L12 Q7 Q12 C84 C56 C51 R210Q8 C60 FI1 FI2 W8 Q1R3 R2 FI3 J1 R50 R206 C88 C85 R211C211L207 L105 L19 C102 R212 C21C42 C100 R208 R6 C35 C45 R53 R55 R61 L21R37 R301 R7 C209 C210 R75 R76 R74 C93 C92 C91 Q16 R83 L3 C6 D102 D101 R207 Q3 C32 R16 C5R70 R72 R73 C95 C205 R25 L4L206 C7 C75 C76 R56 R54 X2 D2 D1 R59 IC2C1 C78 C77 R1 R57C2 C80 C74 R51 C73
SECTION 10 BLOCK DIAGRAM 10 - 1 CTCIND/A REMIN PTT2 MICSW RMUT AFON RXV TXV POWER LCD DS2 VOLT SENSRESET IC5 X2 CDBCA450CX24 (450 kHz) FI3: CFWM450E CERAMIC BPF (450 kHz) FMDET S DETIF AMP NOISE DETIC2 TA31136FN 2SC4215Q13: 2SC4081 Q14: 2SA1586 D8 : 1SS355 D9 : 1SS355 FL-298 Q6: 2SC5108 D4,D5: 1SV284 X1 CR-632 (21.25 MHz)2nd.Lo: 21.25 MHz 2nd MIX IC1 TB31202FN UNLOCK DATA,CK,STBQ1FI2 ATT Q7 2SC5108 R50 MOD LEVEL SET VCO BUFFLO SW D1: MA77 D2: MA77TX/RX SW 2SC3356PWR AMP DRIVE AMP MA2S728 PRE DRIVED7: MA2S077 D101: MA2S077 D102: MA2S077 POWER SET R206 IC3 X24C01ASEEP ROM X1 CR-627 5.8368 MHz POWER MODE UP DOWN PTT S1 CPU AF VOL MMUT TXMOD Q7 2SC4081 TONE LPF TONE LPF Q12 2SC4081MODSW Q1 DTA144EU LPF IDC +3VIC2A NJM2100MQ6 2SK1829 MIC MUTE IC2B NJM2100M Q23 2SJ144 R58 AF VOL VOL MUTEMIC1 KUC3523 PTT SENSEMIC SWMIC Q14 DTA114EU DS1 LN1371G S-80928ANMPLED DRVR+3 CURRENT AMP R+3 T+3 +3V CURRENT AMP Q25: UMZ2N D4: 1SS355 +3V TO LOGIC+3 REG IC6 S-81230SGQ18 2SA1586Q27 : 2SC4081 Q28 : 2SB798 Q101: UMZ1N D5: 1SS355 D101: 1SS355 T+3 CURRENT AMPD2 1SS355 PROTECTORQ29: DTC114EU Q2: UN9215 Q3: UN5119 AF MUTE BATT BATTERYJ3 SP JACK COMON LINE TX LINE RX LINE DATA BUS LINE J1 MIC JACK SP1 AF AMPIC9 NJM2070M Q5 : 2SA1362 Q10: 2SC4081 Q11: 2SC4213 Q2 2SC4226Q3: 2SC5194 RF AMPANT SWHPF LPFANT CHASSIS UNT Q15: 2SC4081 Q16: 2SC4081VCO REG PLL IC AF FIL1st.IF: 21.7 MHz 1st.LO: 411.375-413.075MHzTX/RX: 433.075-434.775MHz TX: 433.075-434.775MHz 1st MIXFI1: NSVA468 SHIFT Q12 2SC5108Q202: MRF9745 D103 Q201 Q8 2SC4228 SQL SENS PSC LOOP FIL IF AMPXTAL BPFBPF CHASSIS UNIT RF UNIT MAIN UNIT IC1 µPD753036GK [CSA/-1] Q27 : 2SC4081 Q28 : 2SB798 D5: MA2S111 D101: MA2S111 D303: MA2S111[ITA/-1]
SECTION 11 VOLTAGE DIAGRAM 11 - 1 11-1 MAIN UNIT LON: 0 LOF: 3.02 LON: 2.82 LOF: 0 C: 3.02 T: 3.04 R: 2.40 C: 3.82C: 3.10 C: 1.65 T: 0 R: 0.86C: 1.95 T: 0 R: 2.97C: 3.12 T: 0 R: 3.02 C: 3.10 T: 1.58 R: 0T: 3.05 R: 0 T: 1.46 R: 0C: 0C: 3.12 T: 1.48 R: 0T: 1.45 R: 0 C: 2.50 C: 3.13T,SC: 0.49 SO: 0.61 T: 0 SO: 2.95 SC: 0T: 3.94 SO: 3.79 SC: 3.98 T: 0 SO: 2.33 SC: 0T: 0 SC: 0 SO: 4.50 T,SC: 0.43 SO: 1.93 T: 1.07 R: 0 T: 3.70 R: 4.00 T: 0.43 R: 0 T: 0.50 R: 0T: 2.77 SO: 0 SC: 2.77T: 0 R: 3.12 T: 3.00 R: 0 T: 2.75 R: 0 T: 1.60 R: 0 C: 3.02 [ITA/-1] T: 2.68 R: 0 [CSA/-1] T: 1.56 R: 0 [ITA/-1] T: 3.70 R: 0 [CSA/-1] W4W1R101 100 kR102 100 k R98 100 k R60 100 kR99 100 kR100 100 k S1 SW-149 C75 0.001 R68 18 kR69 18 k C53 0.1 NC 1 NC 2 NC 3 VSS 4 SDA5 SCL6 NC7 VCC8 IC3 X24C01AS C45 24 P X1 CR-627R72 1 M C46 24 P R61 47 Q14 DTA114EU DS1 LN1371GR96 100 k R90 1 k C92 470 PR67 18 k R71 33 k R70 68 k R89 1 k R97 100 k C74 0.001 REMIN EEPDA RXV EEPCK PSC RESET TXV LAMPC MICSW MMUTEAN3 61 P73/KR7 80AN4 62 AN5 63 AVSS 64 AVREF 65 VDD 66 XT1 67 XT2 68 IC 69 X1 70 X2 71 RESET 72 P60/KR0 73 P61/KR1 74 P62/KR2 75 P63/KR3 76 P70/KR4 77 P71/KR5 78 P72/KR6 79 SQLIN CTCIN TXMOD CTCO2 CTCO1 CTCO0 POWER PLLST PLLDA PLLCK AFON RMUTE BEEP UNLK TEST CLIN 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 AN2 AN1 AN0 P83/AN7 P82/AN6 P31/SYNC P30/LCDCL P23/BUZ P22/PCL/PTO2 P21/PTO1 P20/PTO0 P13/TI0 P12/TNT2 P11/TNT1 P10/TNT0 P03/SI/SB1P81/TI2 P80/TI1 P33 P32 COM021 P02/SO/SB040 COM122 COM223 COM324 BIAS25 VLC026 VLC127 VLC228 P4029 P4130 P4231 P4332 VSS33 P5034 P5135 P5236 P5337 P00/INT438 P01/SCK39 S31/BP7 S30/BP6 S29/BP5 S28/BP4 S27/BP3 S26/BP2 S25/BP1 S24/BP0 S23 S22 S21 S20 S19 S18 S17 S16 S15 S14 S13 S12 S25 S24 S23 S22 S21 S20 S19 S18 S17 S16 S15 S14 S13 S121 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1718 19 20 SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 COM0 COM1 COM2 COM0 COM1 COM2 DS2 LD-BU10185JR65 18 k R66 18 kR64 18 k +3 VUNLK VOL CK DATA STB AF SENS SQL MODPSC R+3 T+3 BATT 12 34 5 6 7 8 9 10 11 12 13 14 J4 4-175638-4 to RF unit J2 8 IC2a NJM2100M R30 68 k C73 0.0033 T-ID13 2 4C1 0.0015R2 82 k R39 82 kC29 270 P R40 47 k Q2 UN9215Q3 UN5119 Q1 DTA144EUC6 1 PTT2 Q6 2SK1829 RMUTE AFON BEEPQ18 2SA1586 R81 10 k R74 10 k C61 0.1 BATIN C56 0.1 R80 100 k R94 220 k C67 2.2 R79 220 k R76 100 k OUT C60 0.1 +3 VTXV RXV C63 0.1 C94 330 P D4 1SS355W7 R77 470 C89 470 P 321 6 5 4 Q25 UMZ2N C65 0.1 R78 10 kGND 1 VIN 2 VOUT 3 NC NCR54 1.2 kR55 120 C49 0.1C48 22 Q10 2SC4081Q5 2SA1362 C47 470 P C55 3.3R23 15 k IC9 NJM2070MC52 2.2R56 1 C50 0.1C17 150 Q11 2SC4213 R26 10 kC18 10 C97 330 PC96 330 P W5J3 HSJ1493-01-010 R58 RV-244 10 k C98 330 PSP1 CHASSIS C20 0.1D2 1SS355 R25 12 k 1REMIN 2 3 4 5 6 7 8 R45 2.2 M C36 0.001 C40 0.1R46 100 R35 5.6 k Q12 2SC4081C51 0.1R57 15 k R34 6.8 k C26 470 PC27 0.1 C28 0.047R33 6.8 k R32 680 kC32 0.1 C31 0.022C34 0.0047 R38 22 k R36 10 kR37 22 k R41 4.7 k Q7 2SC4081 C24 0.033 R53 1.5 M TO RF unit BEEP R42 3.9 kR43 56 k C35 0.1R5 1.2 M W6R7 1.2 k R108 33 kR4 82 k 7IC2b NJM2100M C85 0.1R52 330 kR118 4.7 k MMUTEC93 330 PC3 0.1 R9 100 kR50 4.7 kC5 470 PC79 0.1 R95 4.7 k MC1 KUC3523 R14 3.3 kC10 470 P C11 470 P Q29 DTC114EU C4 0.1 C25 470 P R110 1 M C21 0.1C15 0.1 R22 33 k R27 100 Q23 2SJ144R87 1 M R86 100 kR88 100 k C59 470 P C72 0.01 C57 0.1 R112 33 k [ITA/-1] 10 k [CSA/-1]R301 118 kR200 2.2 M R302 1 kD101 MA2S111 D101 1SS355C86 2.2 Q27 2SC4081 BATT R114 1.2 k 3.3 kD5 MA2S111 [ITA/-1] 1SS355 [CSA/-1] R115 560 D303 MA2S111 6 5 4 321 Q101 UMZ1N Q28 2SB798 Q28 2SB798 R+3 SENIN BATIN RXD TESTR103 100 k R62 100 k PTT2 R105 10 k5 6R6 180 kR202 100 R13 4.7 k R10 82W3 C8 10 C90 470 P R12 10 R49 100 C9 470 PC42 0.01 J1 HSJ-1102-01-540 C95 330 PC44 0.1 C7 0.1C91 470 P R51 470 k C83 0.1 REMIN VDD VSSNC NCIC5 S-80928ANMPC80 100/4 VC62 0.1 C88 470 PC81 0.03345 1 2 3R31 1 M C54 0.1 R+3 C64 22 R63 5.6 k IC6 S-81230SG 4 5R24 1.5 M C82 0.047R106 10 k [ PTT][ DOWN][ UP][ MOD][ POWER] C87 470 P C : COMMON T: TX R : RX SO : SQL OPEN SC : SQL CLOSE LON : LIGHT ON LOF : LIGHT OFF C71 0.1R201 270R119 100 k [ITA/-1][CSA/-1] [ITA/-1][CSA/-1] [ITA/-1] [CSA/-1][ITA/-1] [CSA/-1] [ITA/-1] [CSA/-1]
11-2 RF UNIT 11 - 2 T: 0 R: 2.96T: 0 R: 0.72 T: 0 R: 1.86 T: 0 R: 2.60 T: 0 R: 1.76 T: 0 R: 0.72 T: 0 R: 1.98 C: 2.83C: 2.80T: 0 R: 1.12 T: 1.16 R: 0 T: 0.42 R: 0.36 T: 0.72 R: 0T: 1.38 R: 0 T: 1.51 R: 0 T: 0.75 R: 0.84T: 1.20 R: 0 T: 0 R: 0.82T: 0.57 R: 0 T: 1.47 R: 0 T: 0 R: 2.61 T: 0 R: 0.99 T: 0 R: 1.82T: 0.18 R: 0.78 T: 0 R: 1.72 T: 0 R: 0.95T: 2.85 R: 0.01 C: 1.22 C: 2.01 C: 0.75 C: 0.70 T: 1.56 R: 0.02C: 4.5 T: 0 R: 2.96C: 3.06 C: 2.49 C: 2.99 C: 3.02 R52 560 R53 100 kC74 470 P C73 0.1 C75 470 P R51 560 k IC2 TA31136FN R54 NTCCF20123NH R55 15 k 1 2 3 4 5 6 7 8 9 AFOUTFILIN FILOUT BIAS IFIN VDD MIXOUT OSCOUT OSCIN QUADIN IFOUT SOUT NDET NOUT VSS MIXIN 10 11 12 14 15 16 13 C76 470 P R56 15 k R59 1.8 k R58 4.7 kC2 0.047 C79 10 R57 1.2 k X2 CDBCA450CX24C77 22 P C78 68 P C83 1 C67 0.1 R71 10 k Q15 2SC4081R67 680 k C1 0.001R2 82 kR3 1.8 k W8FI2 FL-298C36 10 P R1 820Q1 2SC4215 1 3 4 5 FI3 CFWM450E L19 27 nH R5 100 k R6 4.7 k C35 0.5 P L1 2.2 µH R19 470 C28 470 P Q2 2SC4226R4 2.2 k C46 22 P(21.25 MHz)2nd LO C4 470 P C48 0.01C13 0.001 C16 470 P C61 5 P C15 0.047 FIN1 1 VCC 2 CP1 3 GND 4 LD 5 CK 6 DATA 7 STB 8 BO9 XOUT10 XIN11 SW12 GND13 CP214 VCC15 FIN216 R27 47 k C63 CTZ3S-20C 20 P R88 10 kC42 33 PC43 12PC100 22 P X1 CR-633C62 0.01 C68 1 W4 Q12 2SC5108 C70 470 P C88 4.7R86 68 Q8 2SC4228 L21 22 nH R37 22 k D2 MA77 D1 MA77 R12 1 k R208 1 k L207 18 nH C211 0.001 R212 180 R211 27L105 82 nH C102 1.5 P W6 R10 8.2 kC17 0.022 R45 4.7 kC18 0.001 C54 3.5 P R210 180 R34 680 C69 8 P R36 220 L14 33 nH R31 33 KC55 470 P C50 12 P L13 27 nHC52 2 P L12 10 µH C64 0.22 D4 1SV284C26 470 P W201 R205 NTCCM16083NH221KC [CSA/-1] T+3 C201 470 P C202 22 P C204 8 P L201 22 nH R202 6.8 k Q201 2SC3356 R206 EVM-1X B14 10 k R301 12 k [ITA/-1] 1 k [CSA/-1] C203 22 P C23 3 PC21 470 P W202 L202 33 nH R213 220 D103 MA2S728 W5D7 MA2S077 C84 470 P C60 22R62 18 2 345678FI1 NSVA468C32 6 P Q3 2SC5149 L3 18 nH 1st LOR+3 C5 470 P C65 470 PL206 18 nH D102 MA2S077C31 7 P C30 7 PL6 17 nHL23 15 nH L5 17 nH C8 6 PC12 8 P C11 0.75 P C9 1.5 P C10 10 P C44 27 P L10 22 nH Q7 2SC5108C57 1.5 PL15 82 nH L208 10 µH C53 1.5 PC56 0.5 P C51 12 PR35 47 k Q6 2SC5108 R29 180 C20 470 P R30 33 k L11 10 µH D5 1SV284 R50 EVM-1XBQ4 47 kC85 4.7 1 2 3 4 5 6 78 910 1112 1314 J2 4-175643-4MOD L25 4.7 µHT+3 PSC R+3 BATT C80 0.22 R32 6.8 k C82 0.1 R60 100 k R61 10 k AF STB DATA CK SENS SQL UNLKR33 8.2 k IC1 TB31202FN C3 0.047R207 1 k R205 1 k [ITA/-1] Q202 MRF9745C205 0.001 C206 0.001L203 8.2 nH C208 9 P L204 8.2 nH C207 8 P D8 1SS355R93 10 R65 3.3 k C86 0.22 Q13 2SC4081 D9 1SS355 Q14 2SA1586 C87 0.1 R64 56 k R209 220C72 470 P L205 68 nH R16 33 R7 47C6 470 P R25 33 kC7 22 P D101 MA2S077 L4 12 nH C210 7 P C45 10 P C209 6 P J1 IMSA-9210B-1-02T 1 2 EP1 2 C81 0.047 C95 470 P R83 10 kVOL R75 10 k Q16 2SC4081 R76 3.9 k R73 680 k R72 8.2 k C93 0.01R74 390 k C92 0.01 R70 27 k C91 0.047 C96 470 P R69 3.9 k R68 390 k C90 0.01 R66 12 k C89 0.00681 RF TEST PORT C: COMMON T: T X R: RX
6-9-16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan Phone : 06 6793 5302 Fax : 06 6793 0013 Communication Equipment Himmelgeister Str. 100, D-40225 Düsseldorf, Germany Phone : 0211 346047 Fax : 0211 333639 URL : http://www.icomeurope.com Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K. Phone : 01227 741741 Fax : 01227 741742 URL : http://www.icomuk.co.uk Zac de la Plaine, Rue Brindejonc des Moulinais BP 5804, 31505 Toulouse Cedex, France Phone : 561 36 03 03 Fax : 561 36 03 00 URL : http://www.icom-france.com 2380 116th Avenue N.E., Bellevue, WA 98004, U.S.A. Phone : ( 425) 454-8155 Fax : ( 425) 454-1509 URL : http://www.icomamerica.com Phone : ( 425) 454-7619 A.C.N. 006 092 575 290-294 Albert Street, Brunswick, Victoria, 3056, Australia Phone : 03 9387 0666 Fax : 03 9387 0022 URL : http://www.icom.net.au 6F No. 68, Sec. 1 Cheng-Teh Road, Taipei, Taiwan R.O.C. Phone : (02) 2559 1899 Fax : (02) 2559 1874 A Division of Icom America Inc. 3071 #5 Road, Unit 9, Richmond, B.C., V6X 2T4, Canada Phone : ( 604) 273-7400 Fax : ( 604) 273-1900 Crta. de Gracia a Manresa Km. 14,750 08190 Sant Cugat del Valles Barcelona, SPAIN Phone : ( 93) 589 46 82 Fax : ( 93) 589 04 46 URL : http://www.icomspain.com