Icom IC-V8000 - Manuals - manualsarea.com

Page 2 - DO NOT expose the transceiver to rain, snow or any liquids.; REPAIR NOTES

INTRODUCTION DANGER This service manual describes the latest service informationfor the IC-V8000 VHF FM TRANSCEIVER at the time of pub-lication. ORDERING PARTS Be sure to include the following four points when orderingreplacement parts: 1. 10-digit order numbers2. Component part number and name3. Eq...

Page 3 - TABLE OF CONTENTS

SECTION 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 4-2 TRANSMITTER CIRCUITS . . . . . . . . . . ...

Page 4 - Transmit; SECTION 1; Version

1 - 1 ‘ ‘ GENERAL • Frequency coverage : *Specifications Guaranteed: 144–148 MHz only • Type of emission : FM (F2D / F3E) • Frequency stability : ± 10 ppm (–10˚C to +60˚C; +14˚F to +140˚F) • Tuning steps : 5, 10, 12.5, 15, 20, 25, 30 or 50 kHz • Antnna connector : SO-239 (50 Ω ) • Power supply requi...

Page 5 - MAIN UNIT

SECTION 2 INSIDE VIEWS 2 - 1 • MAIN UNIT • LOGIC BOARD Reference oscillator(X1: CR-659) VCO circuit Antenna switching circuit(D12, D27: XB15A407, D19: XB15A308, D16: HVU131TRF) AF power amplifier(Q23: RD70HVF1) 1st IF filter(FI3, FI4: FL-310) 2nd IF filter(FI1: CFWS450F, FI2: CFWS450HT) EEPROM(IC5: ...

Page 6 - • REMOVING THE COVER; • REMOVING THE FRONT PANEL; • REMOVING THE MAIN UNIT; • OPTIONAL UNIT INSTALLATION

SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS 3 - 1 Cover MP10 Front panel Chassis MP9 MP6 MP15 J5 (MF1) J6 (SP7) Chassis Main unit MP6 MP6 MP7 MP4 J1 A • REMOVING THE COVER 1 Unscrew 4 screws, MP10. 2 Remove the cover in the direction of the arrow. • REMOVING THE FRONT PANEL 1 Unscrew 3 screws, MP9...

Page 7 - RECEIVER CIRCUITS; • 2ND IF AND DEMODULATOR CIRCUITS

4 - 1 SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT(MAIN UNIT) Received signals passed through the low-pass filter (L44,L47, L48, L51, C190, C197, C203, C208, C210, C217,C218). The filtered signals are applied to the 1/4 λ type antenna switching circuit (D16, D1...

Page 8 - TRANSMITTER CIRCUITS; • APC CIRCUIT

4 - 2 The AF signals are applied to the AF power amplifier circuit(IC9, pin 1) to obtain the specified audio level. The amplifiedAF signals, output from pin 4, are applied to the internalspeaker (CHASSIS UNIT; SP1) via the speaker jack (J6)when no plug is connected to the external speaker jack (J1)....

Page 9 - PLL CIRCUITS; • PLL CIRCUIT; LINE; DESCRIPTION; POWER SUPPLY CIRCUITS; VOLTAGE LINE

4 - 3 4-3 PLL CIRCUITS 4-3-1 PLL CIRCUIT (MAIN AND LOGIC UNITS) A PLL circuit provides stable oscillation of the transmit fre-quency and receive 1st LO frequency. The PLL output com-pares the phase of the divided VCO frequency to the refer-ence frequency. The PLL output frequency is controlled bythe...

Page 10 - PORT ALLOCATIONS

4 - 4 Pin Port Description number name Pin Port Description number name 4-5 PORT ALLOCATIONS 4-5-1 CPU (LOGIC UNIT: IC7) 1 9 11 12 14 15 16 17 19 20 2122 23 26 32–35 36–39 40 41 44 45 47 49–51 53 DETO RESET CSHIFT SCK SO PTT CLIN CLOUT NOIS COLOR DIM1DIM0 REMO UNLK COM4– COM1 KR3– KR0 EXTMIC OPV2 PL...

Page 12 - SECTION 5 PARTS LIST

S.=Surface mount IC1 1110002860 S.IC TA75S393F (TE85R) IC2 1130004200 S.IC TC4S66F (TE85R) IC3 1110005340 S.IC NJM12902V-TE1 IC4 1130009110 S.IC S-80942ANMP-DD6-T2 IC5 1130009680 S.IC HN58X2432TI IC6 1130008090 S.IC BU4066BCFV-E1 IC7 1140010400 S.IC HD6433876B53H (FX-2509A) IC8 1130007570 S.IC BU409...

Page 17 - Screw abbreviations

6 - 1 SECTION 6 MECHANICAL PARTS AND DISASSEMBLY REF. NO. ORDER NO. DESCRIPTION QTY. [CHASSIS PARTS] [MAIN UNIT] W6 8900010980 Cable OPC-1131 1 MP1 8410002380 2399 Heatsink 1 MP2 8510014470 2509 VCO case 1 MP3 8510014460 2509 VCO cover 1 REF. NO. ORDER NO. DESCRIPTION QTY. Screw abbreviations A0, B0...

Page 19 - VHF FM TRANSCEIVER