Icom IC-F51, IC-F50 service manual Connection, JIG Cable, Ptte PTT MIC Mice, Sp+

Page 16

• CONNECTION

FM	Attenuator
deviation meter	40 dB or 50 dB

RF power meter 0.1–10 W/50 Ω

Frequency

counter

Personal computer

to an RS-232C port

DB9 female plug

(incl. level converter circuit)

RS-232C cable (straight)

• *OPC-966 (JIG CABLE)

to the antenna connector

IC-F50/F51

*OPC-966

(JIG CABLE)

Standard signal generator

0.1∝V to 32 mV (–127 dBm to –17 dBm)

CAUTION!

DO NOT transmit while to SSG is connected to the antenna connector

Audio generator

SINAD meter

Speaker (8 Ω)

OPC-966 (Cloning cable)

	Add a jumper wire here
Electrolytic capacity
	47 µF
PTTE
PTT
MIC	+
MICE	Audio generator	AC
	Audio generator	AC
	300 Hz to 3 kHz	millivoltmeter
SP–
SP+		–
		–
		+

5 - 3

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Contents VHF Transceiver Ordering Parts IntroductionRepair Notes Table of Contents Specifications ‘ General‘ Transmitter ‘ ReceiverMain Unit Inside ViewsFront 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 ConvenientVR Board Connector BoardFront Unit Main Unit IC9Varicap HVC375BTRF Themistor Ertjoep 473J Ceramic ECJ0EC1H0R5B Mechanical Parts and Disassembly Unitmm inch Transistor and FET’S SEMI-CONDUCTOR InformationDiodes Main Unit Board LayoutsTOP View 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