Icom IC-F51, IC-F50 service manual Connector Board, MP701

Page 32

9-4 CONNECTOR BOARD

•TOP VIEW

MP701

9 PTT

MIC

TXD

RXD

RESET

MICE

OPTV

VCC

1 AFO

D704

•BOTTOM VIEW

PTT

MIC

CLO

CLI

RES

GND

OPTV

AFO

VCC

B6035C

	C704
D705
EP705	EP704
C703	EP703
	EP703
C702	EP702
	EP702

C701	EP701

D703

D702

D701

9 - 6

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Contents VHF Transceiver Repair Notes IntroductionOrdering Parts Table of Contents Specifications ‘ General‘ Transmitter ‘ ReceiverFront Unit Inside ViewsMain Unit Disassembly Instructions Removing the Chassis UnitRemoving the Front Unit Removing the Main UnitAntenna Switching Circuit Main Unit Receiver CircuitsRF Circuit Main Unit 3 1ST Mixer and 1ST if Circuits Main UnitTransmitter Circuits AF Amplifier Circuit Main and Front UnitsReceive Mute Circuits Main and Front Units Microphone Amplifier Circuit Front and Main UnitsDRIVE/POWER Amplifier Circuits PLL CircuitsModulation Circuit Main Unit APC Circuit Main UnitPower Supply Circuit VCO Circuit Main UnitMain Unit Voltage Line Front Unit Voltage LineOther Circuits Port AllocationsCompounder Circuit Main Unit Expander IC Front Unit IC410SEG1 SCKMdio Msck4 D/A Converter IC Main Unit IC6 Expander IC Main Unit IC12Preparation Adjustment Frequency List Frequency Adjustment ItemScreen Display Example CtcssConnection JIG CablePtte PTT MIC Mice SP+Software Adjustments Transmitting Software Adjustments Receiving ConvenientFront Unit Connector BoardVR Board Main Unit IC9Varicap HVC375BTRF Themistor Ertjoep 473J Ceramic ECJ0EC1H0R5B Mechanical Parts and Disassembly Unitmm inch Diodes SEMI-CONDUCTOR InformationTransistor and FET’S TOP View Board LayoutsMain Unit Bottom View Q23Front Unit J402MC401 VHF B6034B VR BoardConnector Board MP701Section Block Diagram CPUVoltage Diagram 2SC4116BLTC7W66FK 11-3 VR / Connector Boards VR Board Icom America Inc 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan