5 - 4LVPLL lock voltagecheck pointC134PLL lock voltageadjustment for TXC133PLL lock voltageadjustment for RXDC power supply13.8 V / 10 A5-2 PLL ADJUSTMENTPLL LOCKVOLTAGE1234• Operating freq. : 450.000 MHz• Receiving• Output power : Low1• Transmitting• Operating freq. : 500.000 MHz• Receiving• Output power : Low1• TransmittingMAIN Connect a digital multi-meter or an oscillo-scope to the checkpoint, “LV”.1.0 V1.0 V3.3–4.5 V3.3–4.5 VMAIN C133C134VerifyADJUSTMENT ADJUSTMENT CONDITIONSUNIT LOCATIONVALUEUNIT ADJUSTMEASUREMENT ADJUSTMENT

front unit

RECEIVER CIRCUITS

TRANSMITTER CIRCUITS

PLL CIRCUITS

POWER SUPPLY CIRCUITS

PREPARATION

PLL ADJUSTMENT

SOFTWARE ADJUSTMENT

TRIMMER ADJUSTMENT

parts list

main unit

Icom IC-400PRO Service Manual

explicit definitions

supplied accessories

panel description

I Function display

BASIC OPERATION

I Receiving and transmitting

I Accessing a repeater

scan operation

I Scanning preparation

open scan

I Group and priority scans

I Repeater search scan

group mode

I Calling operation

d tx code number edit

selcall operation

I When receiving a call

I Setting the silent stand-by condition

other functions

I DTMF transmission

I RX frequency setting

set mode

programmable function keys 8

programmable function keys

connection and maintenance

I Mounting the transceiver

I Optional UT-108 installation

I Optional OPC-617 installation

SPECIFICATIONS

OPTIONS

IC-400PRO