Icom IC-F7000 service manual Driver Board TOP View VARISTOR-1 Board

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9-3-5 DRIVER BOARD

• TOP VIEW

9-3-6 VARISTOR-1 BOARD

VARI

VARO

GND

to PA unit J6411

9 - 13

Image 66

Contents Service Manual AUS IntroductionOrdering Parts Repair Notes OTHTable of Contents Specifications RC-26 Remote Controller ‘ General SP-25 External Speaker ‘ GeneralUnit mm inch 37 1 15 Section Inside Views RC-26IC-F7000 TOP View IC-F7000 Bottom ViewAbout External Reference Signal Input ‘ in Case of Using External Reference Signal‘ in Case of Using Internal Reference Signal ‘ ConnectionCircuit Description Receiver CircuitsDSP Unit DSP Circuit DSP Receiver Circuit Main and DSP UnitsAGC Circuit DSP and Main Units AF Amplifier Circuit DSP and Main UnitsTransmitter Circuits RF Circuit MAIN, PA, PLL Units and DRI VER BoardRF Filter Circuit PLL Circuits LCD Circuit Display and Connect Boards Reset Circuit Display Board3 2ND LO and Reference Oscillator Circuits PLL Unit Microphone Circuit Display BoardDisplay Board RC-26 Voltage Line Power Supply CircuitsPA Unit Voltage Line PLL Unit Voltage LinePort Allocations Output Expander IC for the PLL Strobe Main Unit IC3601Output Expander IC for the PLL Unit Main Unit IC3602 Output Expander IC for Bandpass FIL- Ters Main Unit IC3604 Output Expander IC Main Unit IC36036 D/A Converter IC Main Unit IC3606 Front CPU Port Allocations RC-26, Display Board IC8201 Required Test Equipment Adjustment ProceduresPreparation ConnectionEntering the Adjustment Mode Operating on the Adjustment ModePLL PLL Unit AdjustmentLPL Lock VoltagePLL Unit TOP View PA and Filter Units Adjustment PA Unit TOP View PLL Unit Bottom ViewReceiver Adjustments L209 Presetting Main Unit TOP ViewRC-26 Front Panel Transmitter Adjustments IC-APC VOL DialSection Parts List Main UnitMain Board Resistor ERJ3GE JPW Resistor ERJ12YJ0R00U R3332 7030003640 ECEV1CA471P Tantalum ECST1AY335R PLL Unit ADM202EARNResistor ERA3YEB Mylar PA Unit DSP Unit DSP Board Driver Board VARISTOR-1 BoardVARISTOR-2 Board Front Unit Display BoardConnect Board Rear BoardHM-146 Main Unit Chassis Parts Mechanical Parts and DisassemblyFront Parts MIC UnitAccessries Accessories Front PartsConnect Board DS DSP Board Chassis PartsMIC Unit DR Driver BoardSEMI-CONDUCTOR Information Transistor and FET’SDiodes Connect Board TOP View Board LayoutsTOP View Rear Board TOP ViewBottom View MIC Unit Bottom View Connect Board Bottom View Rear BoardDisplay Board TOP View Bottom View Display Board DSP Board TOP View Bottom View DSP Board J9901 J9902J2051 Bottom View Main Unit PA Unit Bottom View PA Unit PLL Unit Bottom View PLL Unit Driver Board TOP View VARISTOR-1 Board Bottom View Driver Board Section Block Diagram Voltage Line TX Line RX Line Common LineWiring Diagram IC-F7000Voltage Diagrams 12-1 RC-26 and HM-146Main Unit Explanatory notes Main PA Unit PLL Unit JPW-ERJ3GE DSP Board