Icom IC-F3GS service manual Software Adjustment DC Power Supply, PLL Adjustment

Page 14

• CONNECTION

Standard signal generator

0.1V to 32 mV (–127 dBm to –17 dBm)

to the antenna connector

to [MIC]

Audio generator

CAUTION:

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

Personal computer

to an RS-232C port

FM

deviation meter

Attenuator

40 dB or 50 dB

RF power meter 0.1–10 W/50 Ω

Frequency

counter

OPC-478

DB9 female plug

(incl. level converter circuit)

Speaker (8 Ω )

to [SP]

SINAD meter

JIG cable

• DC POWER CABLE CONNECTIONS

SOFTWARE ADJUSTMENT

+

DC POWER

SUPPLY

DC POWER

SUPPLY

Soldering

DC cable here

PLL ADJUSTMENT

+

Top view

5 - 3

Image 14
Contents VHF FM Transceivers Repair Notes IntroductionOrdering Parts Table of Contents ‘ Transmitter Section Specifications‘ General ‘ ReceiverBottom View Inside ViewsMain Unit TOP View Removing the Chassis Panel Disassembly and Option InstructionsDisassembly Instruction Removing the Main UnitOptional Unit Installations SpongeCircuit Description Receiver CircuitsTransmitter Circuits VCC Power Supply Circuits Voltage LinePLL Circuit OPTPort Allocations Output Expander IC IC10Adjustment Procedures PreparationClone SPEGND Software Adjustment DC Power Supply PLL AdjustmentMain PLL AdjustmentPLL Lock VoltageSoftware Adjustment Level SensitivitySquelch SQLParts List Main UnitVariable Ceramic JB 1C Chassis Parts Mechanical Parts and DisassemblyAccessories EP1 EP2 MP1 MP2IC-F3GS parts Diodes SEMI-CONDUCTOR InformationTransistor and FET’S Board Layouts Main UnitIC5 FI2IC8 CirqBlLOCK Diagram Voltage Diagram IC3CIC1 DTA144EU Section Voltage Diagram Avref Vtref Toned Tonem Avcc16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan 16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan
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