SERVICE MANUAL VHF FM TRANSCEIVER 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13815IZ-C1 © 2002 Icom Inc.
INTRODUCTION DANGER This service manual describes the latest service information for the IC-V8000 VHF FM TRANSCEIVER at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V. This will ruin the transceiver. VERSION SYMBOL SUPPLIED MICROPHONE Asia SEA HM-118N CSA HM-118TN C.S.America CSA-1 USA-3 DO NOT reverse the polarities of the power supply when connecting the transceiver. HM-133V USA-2 U.S.A.
TABLE OF CONTENTS SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS 4 CIRCUIT DESCRIPTION SECTION 4-1 4-2 4-3 4-4 4-5 SECTION SECTION RECEIVER CIRCUITS . . . . . TRANSMITTER CIRCUITS . . PLL CIRCUITS . . . . . . . . . . . POWER SUPPLY CIRCUITS PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 1 SPECIFICATIONS ‘ GENERAL • Frequency coverage : Version Receive Transmit [USA] 144.000–148.000 MHz [SEA] 136.000–174.000 MHz* 140.000–150.000 MHz* [CSA] 136.000–174.000 MHz* *Specifications Guaranteed: 144–148 MHz only • Type of emission • Frequency stability • Tuning steps • Antnna connector • Power supply requirement (negative ground) • Number of memory channel • Call channel • Scanning mode • Current drain (approx.
SECTION 2 INSIDE VIEWS • MAIN UNIT AF power amplifier (Q23: RD70HVF1) Antenna switching circuit (D12, D27: XB15A407, D19: XB15A308, D16: HVU131TRF) VCO circuit 2nd IF filter (FI1: CFWS450F, FI2: CFWS450HT) Reference oscillator (X1: CR-659) 1st IF filter (FI3, FI4: FL-310) • LOGIC BOARD System clock (X1: CR-663) CPU (IC7: HD6433876B53H) EEPROM (IC5: HN58X2432TI) Speaker Reset IC (IC4: S-80942ANMP-DD6) 2-1 LOGIC board
SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS • REMOVING THE COVER • REMOVING THE MAIN UNIT 1 Unscrew 4 screws, MP10. 2 Remove the cover in the direction of the arrow. 1 Unscrew 11 screws, MP6, and 2 screws, MP7, and 2 screws, MP4. 2 Unsolder 3 points, A, to remove the antenna connector. 3 Remove the Main unit in the direction of the arrow.
SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT (MAIN UNIT) The signals from the RF circuit are mixed at the 1st mixer (Q19) with a 1st LO signal coming from the VCO circuit to produce a 21.70 MHz 1st IF signal. The 1st IF signal is applied to two crystal filters (FI3 and FI4) to suppress out-of-band signals. The filtered 1st IF signal is applied to the IF amplifier (Q16), then applied to the 2nd mixer circuit (IC4, pin 16).
The AF signals are applied to the AF power amplifier circuit (IC9, pin 1) to obtain the specified audio level. The amplified AF signals, output from pin 4, are applied to the internal speaker (CHASSIS UNIT; SP1) via the speaker jack (J6) when no plug is connected to the external speaker jack (J1). 4-1-6 4-2-2 The audio signals (SHIFT) change the reactance of D2 to modulate an oscillated signal at the VCO (Q6, D4).
4-3 4-3-1 PLL CIRCUITS 4-4 PLL CIRCUIT (MAIN AND LOGIC UNITS) VOLTAGE LINE A PLL circuit provides stable oscillation of the transmit frequency and receive 1st LO frequency. The PLL output compares the phase of the divided VCO frequency to the reference frequency. The PLL output frequency is controlled by the divided ratio (N-data) of a programmable divider.
4-5 PORT ALLOCATIONS 4-5-1 CPU (LOGIC UNIT: IC7) Pin Port number name 1 DETO Input port for the weather alert signal detection. 9 RESET Input port for reset signal. 11 CSHIFT Outputs reference oscillator for the CPU control signal. SCK Outputs serial clock signal to the expander IC (MAIN unit; IC2, pin 3), D/A convertor IC (MAIN unit, IC5, pin 7), etc. SO Outputs serial signals to the D/A convertor IC (MAIN unit; IC5, pin 8),etc. 15 PTT Input port for the [PTT] switch.
4-5-2 D/A CONVERTOR IC (MAIN UNIT: IC5) Pin Port number name 2 3 MOD Description Outputs transmit devetion control signal. SQLATT Outputs attenuator control signal. 10 T1 • Outputs tunable bandpass filter control signal while receiving. • Outputs TX power control signal while transmitting. 11, 23 T2, T3 Output tunable bandpass filter control signals. 14 SQLIN Outputs squelch control signal. 15 DTC Outputs DTCS’s gradient control signal.
SECTION 5 PARTS LIST [LOGIC BOARD] REF NO. ORDER NO. [LOGIC BOARD] REF NO. DESCRIPTION IC1 IC2 IC3 IC4 IC5 IC6 IC7 IC8 1110002860 1130004200 1110005340 1130009110 1130009680 1130008090 1140010400 1130007570 S.IC S.IC S.IC S.IC S.IC S.IC S.IC S.
[LOGIC BOARD] REF NO. ORDER NO. [LOGIC BOARD] REF NO.
[MAIN UNIT] REF NO. [MAIN UNIT] ORDER NO. REF NO. DESCRIPTION D10 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 D21 D22 D23 D24 D25 D26 D27 D28 D29 1750000710 1750000710 1710001060 1750000710 1790000980 1750000550 1710000870 1790000980 1790001250 1710001080 1730000520 1790000700 1790001520 1790001250 1790001250 1790001250 1790001250 1710001060 1790000980 1750000370 S.VARICAP S.VARICAP DIODE S.VARICAP S.DIODE S.DIODE S.DIODE S.DIODE S.DIODE DIODE ZENER DIODE S.ZENER S.DIODE S.DIODE S.DIODE S.DIODE DIODE S.
[MAIN UNIT] REF NO. [MAIN UNIT] ORDER NO. REF NO.
[MAIN UNIT] REF NO. C105 C106 C108 C109 C111 C112 C113 C116 C117 C118 C120 C122 C123 C124 C125 C126 C127 C128 C129 C130 C131 C133 C134 C135 C136 C137 C138 C139 C140 C141 C142 C145 C146 C147 C148 C149 C150 C151 C152 C153 C154 C155 C156 C157 C158 C159 C160 C161 C163 C164 C166 C167 C168 C169 C170 C171 C172 C173 C174 C175 C176 C177 C178 C179 C180 C181 C182 C183 C184 C185 C187 C188 C189 C190 C191 C192 C193 C194 C195 C196 C197 C198 [MAIN UNIT] ORDER NO.
SECTION 6 MECHANICAL PARTS AND DISASSEMBLY 6-1 IC-V8000 [ACCESSORIES] [CHASSIS PARTS] REF. NO. ORDER NO. DESCRIPTION REF. NO. ORDER NO. QTY. QTY.
MP14 (C) J1 (C) MP14 (C) MP4 (C) MP1 (C) MP14 (C) MP14 (C) MP12 (L) LOGIC unit MP2 (C) MP7 (L) MP3 (L) MF1 (C) MP2 (L) EP9 (L) MP12 (L) DS19 (L) MP4 (L) MP11 (C) MP1 (L) MP15 (C) MAIN unit MP6 (L) MP9 (C) MP5 (L) MP6 (C) W6 (M) MP16 (C) MP6 (C) IC9 (M) WS1 (L) MP5 (C) SP1 (L) MP8 (L) MP7 (C) MP6 (C) MP9 (L) MP17 (C) MP9 (C) MP3 (C) UNIT abbreviations (C): CHASSIS PARTS, (L): LOGIC BOARD, (M): MAIN UNIT MP10 (C) MP10 (C) 6-2
6-2 HM-133V [MAIN UNIT] [CHASSIS PARTS] REF. NO. ORDER NO. DESCRIPTION QTY.
SECTION 7 SEMI-CONDUCTOR INFORMATION • TRANSISTOR AND FET’S 2SA1576 R (Symbol: FR) • DIODES 2SA1734 (Symbol: LB) 2SA1586 GR (Symbol: S0) 2SB1132 R (Symbol: BARB) 1SS133 (Symbol: Yellow line) 2SC2712 BL (Symbol: L0) DA221 (Symbol: K) 1SS355 (Symbol: A) DAN222 (Symbol: N) DSA3A1 (Symbol: ) green yellow B B C E B B C C E 2SC4116 BL (Symbol: LL) B 2SC4116 GR (Symbol: LG) A1 C C E A2 2SC4213 B (Symbol: AB) 2SC4226 R25 (Symbol: R25) B B HVC350B (Symbol: BO) HVC375B (Symbol: B8 ) H
SECTION 8 BOARD LAYOUTS 8-1 HM-133V • BOTTOM VIEW • TOP VIEW B5811B 1 DS8 DS7 R35 IC3 C24 S1 C15 DS5 Q4 D16 Q5 X1 IC2 C1 Q6 D17 D10 R18 R19 R20 C4 D8 D9 C13 DS1 R25 R32 R22 R23 D19 D1 C23 R34 R7 Q9 R33 R26 Q3 C30 Q2 R36 Q8 R37 EP4 C16 D18 L2 R41 R8 3 C5 EP2 EP3 C19 C17 C21 L1 C18 EP1 C22 J1 J1 to Logic board J1 1 7 MU/D M8V PTT M8VSW MIC MICE MDATA E C11 C9 C10 R38 DS2 C25 R2 R39 R6 C29 Q1 R40 R24 IC1 C31 R5 R31 R30 C2 D11 DS3
8-2 LOGIC BOARD DS16 • TOP VIEW DS2 DS4 DS5 DS7 DS8 DS10 DS11 C78 DS1 DS17 DS13 DS18 EP1 IC8 C31 R12 R93 C65 J1 R18 Q1 R67 R9 D2 R8 DS14 R74 R10 MICIN GND MIC MICE PTT EXTMIC MICUD 8V J1 From External Microphone 8 1 8-2 S9 R31
• BOTTOM VIEW R73 R49 IC3 EP7 EP3 EP4 EP2 C36 R55 R54 EP6 D17 D15 C20 D16 D14 C23 D23 D13 D11 UNLK MODIN TEMP SCK OPV1 AFE +5V PDET CTCSS DETO SD NOIS J2 to Main unit J2 CLONE POWON LVIN VOLOUT C5V +8V EXSTB GND SO PLLCK PLLSTB QS J3 to Main unit J1 1 1 12 R96 EP8 C73 D22 C37 C64 R28 D12 Q5 EP5 R70 D6 R25 C34 C35 R109 CP1 C14 J2 C9 C4 C40 C1 R87 R22 C30 C15 C13 C7 C10 C5 R59 J3 R110 R16 D3 C16 R17 R21 R101 R14 1 1 C51 C38 Q3 R32 R34 C46
8-3 MAIN UNIT • TOP VIEW L33 L34 D20 C159 L47 C218 C201 L51 D28 C197 L37 C225 C176 R107 C174 D19 C63 L43 L32 L31 R174 L38 C169 D27 C245 L40 MP2 C59 D15 D16 R150 C163 Q26 Q14 R47 R48 C64 R45 D12 L46 C206 R106 FAN C177 L44 C217 L39 R108 R109 C214 C104 Q15 R166 C69 C125 R83 R84 C112 1 J5 D17 C190 C191 C171 7 C116 R82 C196 D14 C167 6 C203 C237 C227 J5 (FAN) C239 C238 R167 C126 C129 Q20 C123 C166 L42 9 C229 R92 J6 (SP) C198 L35 C13
R162 C105 IC2 R12 C101 C12 C24 C51 R29 Q10 Q1 C14 Q30 R57 C91 R54 Q17 R152 C28 R22 R5 C213 IC8 Q28 R154 R120 R121 C179 D1 Q31 IC7 C154 C1 C11 R6 R21 R37 C52 R161 8-5 Q32 R103 C153 C106 D22 R128 IC6 R129 R127 C209 C149 R104 C90 Q29 R36 L21 L24 Q18 R118 C134 R67 R112 R44 C96 R68 Q3 R76 Q5 R49 R153 R60 R69 R16 R43 Q8 C74 R50 C72 D18 C211 C219 C109 L23 C185 C16 C17 C31 R51 R168 C242 L18 R13 L14 C61 C67 C70 C87 D6 R14 C65 C88 L50
SECTION 9 BLOCK DIAGRAM +8V SHIFT Q1: 2SC4116 Q3: 2SC4116 Q5: 2SC4116 Q8: DTA113ZU VCO REG Q6: 2SC4226 D2: HVC375B D4: HVC375B LO AMP IC1: LV2105V Q2: XP4601 CP PLL LOOP OUT IC FIL (LOOP-SW) REF OSC PRE DRIVE TX/RX SW BUFF Q9: 2SC4406 MOD Q4: 2SC4116 D3: HVC376B X1: CR-659 T8 D6: MA77 D7: MA77 Q11: 2SC4406 SWHV Q18: 2SK3074 HV Q20: 2SK3075 PWR AMP DRIVE AMP DRIVE AMP D12: XB15A407 D27: XB15A407 D19: XB15A308 D16: HVU131TRF HV Q23: RD70HVF1 ANT SW LPF Q17: 2SC3356 ANTENNA LPF D28:
SECTION 10 VOLTAGE DIAGRAM 10-1 LOGIC BOARD EXTMIC MICUD EP6 MMZ1608Y102BT EP7 MMZ1608Y102BT 8V EP8 MMZ1608Y102BT R5 330 k R6 100 k C8 0.01 R109 27 k R2 120 k 1 5 C32 10 4 3 2 J1 3017-8821 C11 0.001 D1 MA8091 M R3 10 k R1 12 k C28 0.001 D3 NA8 091 M IC1 TA75S393F IC2 TC4S66F R101 4.7 k C39 0.001 R111 18 k R7 100 CP3 C: 4.9 V PTT MICUD D22 MA2S 111 BAND1 C43 0.
R72 220 k R53 1.5 M C57 0.0027 9 8 C54 0.01 R49 27 k 10 IC3 NJM12902V R50 1M 14 13 12 11 10 9 8 C73 2.2 R67 10 k R81 120 k R74 150 k R91 120 k C75 270 P R73 330 k R76 18 k R96 39 k R84 1.5 k 6 7 SP1 045P0804 5 R75 68 k C66 0.01 IC6 BU4066BCFV R56 1 C69 0.1 R64 1M RMUT AFON C56 0.0022 VDD CONT.A CONT.D I/O O/I O/I I/O CTCSS 1 2 I/O 3 O/I 4 O/I 5 I/O 6 CONT.B 7 CONT.C VEE C71 0.01 R69 10 k R70 39 k R78 100 k C72 0.033 R71 10 k IC3 NJM12902V C76 0.033 R92 18 k C74 0.
SECTION 10 VOLTAGE DIAGRAM 10-1 LOGIC BOARD 5 C32 10 4 3 2 J1 3017-8821 IC1 TA75S393F PTT MICUD R36 12 k R27 120 k D22 MA2S 111 BAND1 1 2 3 4 AFOUT A0 A1 A2 VSS VCC WP SCL SDA 8 7 6 5 D11 1SS 133 MICIN D14 RXEXP S-MW/MW S12 S11 SET/LOCK MICS MMUT PTT PDET DICK DIUD REMO DETO TEMP LVIN SD CTCIN SD LVIN TEMP PDET R52 1k Q4 DTC144EU D15 MA2S111 SCRAM X1 CR-663 R51 10 1 2 PB0/AN0 3 AVSS 4 TEST 5 X2 6 X1 7 VSS XIN 8 OSC1 XOUT 9 OSC2 RESET 10 RES CSHIFT 11 NMI 12 P20/IRQ4/ADTRG SCKC
10-2 MAIN UNIT Q14 2SA1734 T: 7.5 V R: 7.1 V R7 N TCCM20124A G473JCT R29 10 k C12 33 R15 270 k R37 47 k R14 1M R8 100 k C4 0.1 5 6 C3 1 R2 10 k R3 470 k FC 2 R10 47 k C17 0.001 D3 HVC376B Q3 2SC4116 BL C241 0.1 C13 68 P R26 10 k R17 220 k X1 CR-659 T: 6.8 V R: 0 V C52 0.001 C39 0.1 D4 D2 HVC375B HVC375B R1 47 k R23 22 k R4 68 R19 8.2 k C7 0.
T8 R151 0.15 C118 47 C122 0.001 C:13.0 V L27 3225 H L24 3225 H L28 60 nH C109 0.01 C147 100 Q20 2SK3075 Q18 2SK3074 R82 56 C155 0.01 L37 10 nH C151 56 P R98 0.15 R164 56 C130 27 P C150 0.001 C174 0.001 Q23 RD70HVF1 C135 100 P C234 180 P T: 1.9 V R: 0 V C159 56 P C156 100 P C228 39 P C167 100 P L40 LW-19 L39 47 nH C229 39 P C227 100 P C176 27 P CHASSIS UNIT MR-DSE-01 C237 2P C238 0.001 R166 10 k Q26 DTA144EU R106 10 k C194 330 MUTE ON: 0.6 V MUTE OFF: 0 V 3 R108 2.
10-2 MAIN UNIT Q14 2SA1734 C12 33 R15 270 k R37 47 k R14 1M TEMP R8 100 k C4 0.1 5 6 C3 1 R2 10 k R3 470 k FC 2 R10 47 k C17 0.001 C241 0.1 D3 HVC376B C13 68 P R26 10 k R17 220 k X1 CR-659 R23 22 k C39 0.1 D4 D2 HVC375B HVC375B R1 47 k R19 8.2 k C7 0.001 C30 4P PLLCK PLLDATA PLLSTB to Logic board J3 XIN XOUT OUT CL PE DI VCCD CE VCCR GNDD PDN PI GNDR PDP CP TEST D5 HVC375B C47 0.1 C45 0.001 C60 0.001 C5 0.01 C68 9P C62 12 P C32 12 P C66 22 P C71 47 P C77 0.01 R52 1.
INTRODUCTION DANGER This service manual describes the latest service information for the IC-V8000 VHF FM TRANSCEIVER at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V. This will ruin the transceiver. VERSION SYMBOL SUPPLIED MICROPHONE Asia SEA HM-118N CSA HM-118TN C.S.America CSA-1 USA-3 DO NOT reverse the polarities of the power supply when connecting the transceiver. HM-133V USA-2 U.S.A.
SERVICE MANUAL VHF FM TRANSCEIVER 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13815IZ-C1 © 2002 Icom Inc.
