Icom IC-F7000 service manual ‘ in Case of Using Internal Reference Signal, ‘ Connection

Page 11

‘IN CASE OF USING INTERNAL REFERENCE SIGNAL

NEED TO MODIFY the PLL unit (bottom side) as below. Otherwise the transceiver does not work properly.

qUnsolder connect points (CP5041) on the PLL unit.

wSolder R5251 to the original position, or solder disconnect points (CP5251) on the PLL unit.

q	w	CP5251
		CP5251

CP5041

‘CONNECTION

Connect the external reference oscillator to the IC-F7000 as below.

IC-F7000 front panel

[REF IN]

External reference

Frequency	: 32 MHz
Level	: 2.0–8.0 Vp-pat 15 kΩ
	impedance

3 - 2

Image 11

Contents Service Manual OTH IntroductionOrdering Parts Repair Notes AUSTable of Contents Specifications SP-25 External Speaker ‘ General RC-26 Remote Controller ‘ GeneralUnit mm inch 37 1 15 RC-26 Section Inside ViewsIC-F7000 Bottom View IC-F7000 TOP View‘ in Case of Using External Reference Signal About External Reference Signal Input‘ Connection ‘ in Case of Using Internal Reference SignalDSP Unit Circuit DescriptionReceiver Circuits AF Amplifier Circuit DSP and Main Units DSP Receiver Circuit Main and DSP UnitsAGC Circuit DSP and Main Units DSP CircuitTransmitter Circuits RF Filter Circuit RF Circuit MAIN, PA, PLL Units and DRIVER Board PLL Circuits Microphone Circuit Display Board Reset Circuit Display Board3 2ND LO and Reference Oscillator Circuits PLL Unit LCD Circuit Display and Connect BoardsPLL Unit Voltage Line Power Supply CircuitsPA Unit Voltage Line Display Board RC-26 Voltage LineOutput Expander IC for the PLL Unit Main Unit IC3602 Port AllocationsOutput Expander IC for the PLL Strobe Main Unit IC3601 6 D/A Converter IC Main Unit IC3606 Output Expander IC for Bandpass FIL- Ters Main Unit IC3604Output Expander IC Main Unit IC3603 Front CPU Port Allocations RC-26, Display Board IC8201 Connection Adjustment ProceduresPreparation Required Test EquipmentOperating on the Adjustment Mode Entering the Adjustment ModeVoltage PLL Unit AdjustmentLPL Lock PLLPLL Unit TOP View PA and Filter Units Adjustment PLL Unit Bottom View PA Unit TOP ViewReceiver Adjustments RC-26 Front Panel L209 PresettingMain Unit TOP View Transmitter Adjustments VOL Dial IC-APCMain Unit Section Parts ListMain Board Resistor ERJ3GE JPW Resistor ERJ12YJ0R00U R3332 7030003640 ECEV1CA471P Tantalum ECST1AY335R ADM202EARN PLL UnitResistor ERA3YEB Mylar PA Unit DSP Unit DSP Board VARISTOR-2 Board Driver BoardVARISTOR-1 Board Display Board Front UnitRear Board Connect BoardHM-146 Main Unit MIC Unit Mechanical Parts and DisassemblyFront Parts Chassis PartsAccessries Connect Board AccessoriesFront Parts DR Driver Board Chassis PartsMIC Unit DS DSP BoardDiodes SEMI-CONDUCTOR InformationTransistor and FET’S Rear Board TOP View Board LayoutsTOP View Connect Board TOP ViewBottom View Rear Board Bottom View MIC Unit Bottom View Connect BoardDisplay Board TOP View Bottom View Display Board DSP Board TOP View J9901 J9902 Bottom View DSP BoardJ2051 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 Voltage Line TX Line RX Line Common Line Section Block DiagramIC-F7000 Wiring Diagram12-1 RC-26 and HM-146 Voltage DiagramsMain Unit Explanatory notes Main PA Unit PLL Unit JPW-ERJ3GE DSP Board