Icom IC-F50, IC-F51 service manual VHF Transceiver

Page 1

SERVICE MANUAL

VHF TRANSCEIVER

Page 1 Page 2
Image 1
Page 1 Page 2
Contents VHF Transceiver Ordering Parts IntroductionRepair Notes Table of Contents ‘ General Specifications‘ Transmitter ‘ ReceiverMain Unit Inside ViewsFront Unit Removing the Chassis Unit Disassembly InstructionsRemoving the Front Unit Removing the Main UnitReceiver Circuits Antenna Switching Circuit Main UnitRF Circuit Main Unit 3 1ST Mixer and 1ST if Circuits Main UnitAF Amplifier Circuit Main and Front Units Transmitter CircuitsReceive Mute Circuits Main and Front Units Microphone Amplifier Circuit Front and Main UnitsPLL Circuits DRIVE/POWER Amplifier CircuitsModulation Circuit Main Unit APC Circuit Main UnitVCO Circuit Main Unit Power Supply CircuitMain Unit Voltage Line Front Unit Voltage LinePort Allocations Other CircuitsCompounder Circuit Main Unit Expander IC Front Unit IC410SCK SEG1Mdio MsckExpander IC Main Unit IC12 4 D/A Converter IC Main Unit IC6Preparation Frequency Adjustment Item Adjustment Frequency ListScreen Display Example CtcssJIG Cable ConnectionPtte PTT MIC Mice SP+Software Adjustments Transmitting Convenient Software Adjustments ReceivingVR Board Connector BoardFront Unit IC9 Main UnitVaricap HVC375BTRF Themistor Ertjoep 473J Ceramic ECJ0EC1H0R5B Mechanical Parts and Disassembly Unitmm inch Transistor and FET’S SEMI-CONDUCTOR InformationDiodes Main Unit Board LayoutsTOP View Q23 Bottom ViewJ402 Front UnitMC401 VR Board VHF B6034BMP701 Connector BoardCPU Section Block Diagram2SC4116BL Voltage DiagramTC7W66FK 11-3 VR / Connector Boards VR Board Icom America Inc 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan
Top Page Image Contents