Icom IC-V8000 Bedienungsanleitung

SERVICEMANUALVHF FM TRANSCEIVER1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, JapanS-13815IZ-C1© 2002 Icom Inc.

4 - 4Pin PortDescriptionnumber namePin PortDescriptionnumber name4-5 PORT ALLOCATIONS4-5-1 CPU (LOGIC UNIT: IC7)1911121415161719202122232632–3536–3940

4 - 5Pin PortDescriptionnumber name231011, 23141522MODSQLATTT1T2, T3SQLINDTCFCOutputs transmit devetion control sig-nal.Outputs attenuator control sig

S.=Surface mountIC1 1110002860 S.IC TA75S393F (TE85R) IC2 1130004200 S.IC TC4S66F (TE85R) IC3 1110005340 S.IC NJM12902V-TE1IC4 1130009110 S.IC S-80942

5 - 2S.=Surface mountC5 4030007090 S.CERAMIC C1608 CH 1H 470J-T-AC7 4030006860 S.CERAMIC C1608 JB 1H 102K-T-AC8 4030006900 S.CERAMIC C1608 JB 1H 103K-

S.=Surface mountD10 1750000710 S.VARICAP HVC350BTRFD11 1750000710 S.VARICAP HVC350BTRFD12 1710001060 DIODE XB15A407D13 1750000710 S.VARICAP HVC350BTRF

5 - 4S.=Surface mountR101 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ) R103 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R104 7030003740 S.RESISTOR

S.=Surface mountC105 4030006860 S.CERAMIC C1608 JB 1H 102K-T-AC106 4030006860 S.CERAMIC C1608 JB 1H 102K-T-AC108 4030006860 S.CERAMIC C1608 JB 1H 102K

6 - 1SECTION 6 MECHANICAL PARTS AND DISASSEMBLYREF. NO. ORDER NO.DESCRIPTIONQTY.[CHASSIS PARTS][MAIN UNIT]W6 8900010980 Cable OPC-1131 1MP1 8410002380

INTRODUCTIONDANGERThis service manual describes the latest service informationfor the IC-V8000 VHF FM TRANSCEIVER at the time of pub-lication.ORDERING

SERVICEMANUALVHF FM TRANSCEIVER1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, JapanS-13815IZ-C1© 2002 Icom Inc.

INTRODUCTIONDANGERThis service manual describes the latest service informationfor the IC-V8000 VHF FM TRANSCEIVER at the time of pub-lication.ORDERING

SECTION 1 SPECIFICATIONSSECTION 2 INSIDE VIEWSSECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONSSECTION 4 CIRCUIT DESCRIPTION4-1 RECEIVER CIRCUITS . . . .

1 - 1‘‘GENERAL• Frequency coverage : *Specifications Guaranteed: 144–148 MHz only• Type of emission : FM (F2D / F3E)• Frequency stability : ± 10 ppm (

SECTION 2 INSIDE VIEWS2 - 1•MAIN UNIT•LOGIC BOARDReference oscillator(X1: CR-659)VCO circuitAntenna switching circuit(D12, D27: XB15A407, D19: XB15A3

SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS3 - 1CoverMP10Front panelChassisMP9MP6MP15J5 (MF1)J6 (SP7)ChassisMain unitMP6MP6MP7MP4J1A• REMOVING THE C

4 - 1SECTION 4 CIRCUIT DESCRIPTION4-1 RECEIVER CIRCUITS4-1-1 ANTENNA SWITCHING CIRCUIT(MAIN UNIT)Received signals passed through the low-pass filter (

4 - 2The AF signals are applied to the AF power amplifier circuit(IC9, pin 1) to obtain the specified audio level. The amplifiedAF signals, output fro

4 - 34-3 PLL CIRCUITS4-3-1 PLL CIRCUIT (MAIN AND LOGIC UNITS)A PLL circuit provides stable oscillation of the transmit fre-quency and receive 1st LO f