Icom iC-706MKTMG manual Troubleshooting, Power Supply Receive Problem Possible Cause Solution

Page 60

9 TROUBLESHOOTING

The following chart is designed to help you correct problems which are not equipment malfunctions.

If you are unable to locate the cause of a problem or solve it through the use of this chart, contact your nearest Icom Dealer or Service Center.

POWER SUPPLY

RECEIVE

PROBLEM

 

POSSIBLE CAUSE

SOLUTION

REF.

Power does not

come

DC power cable is improperly

Reconnect the power cable correctly.

p. 13

on when the [POWER]

connected.

 

 

switch is pushed.

 

 

 

 

 

 

Fuse is blown.

Check for the cause, then replace the

p. 56

 

 

 

fuse with a spare one.

 

 

 

 

(Fuses are installed in two places. One is

 

 

 

 

installed in the DC power cable and the

 

 

 

 

other is installed in the PA unit.

 

 

 

Battery is exhausted if you are using

Check the battery voltage with the

—

 

 

a 12 V battery as the power source.

[POWER] pushed IN.

 

No sound comes

from

Volume level is set too low.

Rotate [AF] clockwise to obtain a suit-

p. 1

the speaker.

 

 

able listening level.

 

 

 

The squelch is closed.

Rotate [SQL] counterclockwise to

p. 1

 

 

 

open the squelch.

 

 

 

The transceiver is in the transmitting

Release [PTT] on the microphone or

—

 

 

condition.

check the SEND line of an external

 

 

 

 

unit, if connected.

 

 

 

An external speaker or headphones

Check the external speaker or head-

p. 12

 

 

are connected.

phone plug connection.

 

 

 

 

Check the speaker ON/OFF switch or

p. 12

 

 

 

speaker A/B switch, when an optional

 

 

 

 

SP-20EXTERNAL SPEAKER is in use.

 

 

 

 

 

 

Sensitivity is low.

 

The antenna is not connected properly.

Reconnect to the antenna connector.

—

 

 

The antenna feed line is cut or shorted.

Check the feed line and correct any

 

 

 

 

improper conditions.

—

 

 

The antenna for another band is

Select an antenna suitable for the

p. 14

 

 

selected.

operating frequency.

 

 

 

 

Make sure that [ANT1] is used for

 

 

 

 

frequencies less than 60 MHz and

 

 

 

 

[ANT2] is used for frequencies of 60

 

 

 

 

MHz and above.

 

 

 

The antenna is not properly tuned.

Push [TUNE] to manually tune the

pgs. 27,

 

 

 

antenna.

28

 

 

The attenuator function is activated.

Push [ATT] to turn the function OFF.

p. 21

 

 

 

 

Receive audio is distor-

The operating mode is not selected

Select a suitable operating mode.

p. 19

ted.

 

correctly.

 

 

 

 

The [SHIFT] control is set off-center.

Set [SHIFT] to the center position.

p. 20

 

 

 

 

Receive signal is distor-

Noise blanker function is activated.

Push [NB] to turn the function OFF.

p. 21

ted with strong signals.

 

 

 

 

 

Preamp is activated.

Push [P.AMP] to turn the function

p. 21

 

 

 

OFF.

 

 

 

 

 

 

57

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Contents I706MKG Precautions Word Definition RwarningTable of Contents Panel Description Front panel0MAIN Dial Tension Latch 2LOCK Switch Lock @2PREAMP/ATTENUATOR Switch P.AMP/ATTFunction switches VOX Function p Speech Compressor pBREAK-IN p Function pRear and side panels When connecting the ACC conversion cable OPC-599 ACC PIN # Name Description Specifications ColorACC Socket 1DOT Matrix Indicators 3FUNCTION Indicators4DSP Indicators Function display➊UP/DOWN Switches UP/DN ➋LOCK Switch Lock ➌PTT Switch PTTMicrophone Connector HM-103 Schematic DiagramInstallation and Connections PL-259 Connector Installation ExampleUnpacking GroundingInstallation Single body mountingStand Front panel separationRequired connections Rtty TerminalAdvanced connections Power supply connections Connecting the PS-85 DC Power SupplyConnecting a NON-ICOM DC Power Supply Connecting a NON-ICOMConnecting the AH-4 Connecting the AT-180Connecting the IC-PW1 External antenna tuners and linear amplifierFrequency Setting When first applying power CPU resettingInitial settings Power OFFVFO Mode Memory Mode pgsVFO description VFOFrequency setting Programmable tuning stepsHz and 10 Hz tuning steps Band selectionMHz quick tuning step TS Switch Flow ChartSSB/CW/RTTY modes Any mode FM/WFM/AM modes Sub dial functionMode selection Operating Mode SelectionQuick band change function ➁ Push F-1-F-3 to select a band stacking registerReceive and Transmit Functions for receiveIf shift function RIT functionNoise blanker AGC time constantPreamp and attenuator Peak meter holdRF gain and squelch Simple band scopeRF/SQL control priority Filter Presetting Optional filter selectionFilter ON/OFF SSBCeiver maintains the ON/OFF condition when pushing F-2NR ANF Automatic Notch Filter functionNR Noise Reduction function Output power and mic gain Functions for transmitDMeter function Speech compressor VOX operationManual Tuning Optional AT-180 Automatic Antenna Tuner operationTuner Operation ➂ The Tuner light lights constantly when tuning is complete Optional AH-4AUTOMATIC Antenna Tuner operationAH-4 operation PTT tune functionSplit frequency operation Quick split function➀ Select VFO a and set the frequency to 7.057 MHz/CW Split lock functionRepeater operation ➄ Push and hold PTT to transmit release PTT to receiveTone squelch operation Tone scan operation➅ Communicate in the usual manner ➂ Push F-3SCN to toggle tone scan operation on and OFFOne-touch repeater function Auto repeater functionThis function automatically activates the repeater set Frequency Duplex DirectionFunctions for CW Connections for CWCW operation Elec KEYCW reverse mode DElectronic CW keyer Quick SET ModeSetting the electronic keyer CW pitch controlFunctions for Rtty Connections for Rtty FSKConnections for Afsk Presetting for Rtty Rtty FSK operationRtty Afsk operation Adjusting the transmit signal output from the TNC Packet operationConnections for packet Data socketMeasuring SWR Spot measurementPlot measurement Memory and Scan Operation Memory channelsMemory channel selection Memory clearingProgramming in VFO mode Programming in memory modeMemory/call programming Frequency transferring Memory namesCalling up memory names Editing programming memory namesMemo pads Writing frequencies and operating modes into memo padsCalling up a frequency from a memo pad ➀ Select the S1 displayScan types PreparationProgrammed scan operation Memory scan operationSelect memory scan operation Priority watchRemote Jack CI-V Information CI-V connection exampleData format Command Table VFO A=BSET Mode Quick set mode operationInitial set mode operation GeneralQuick set mode items Q3 VOX Delay SSB/AM/FM onlyQ2 MIC Gain SSB/AM/FM only Q4 VOX Gain SSB/AM/FM onlyQ5 Anti VOX SSB/AM/FM only Initial set mode items RF/SQL SQL/AUTO/RFSQL Quick Split quick split function Split Lock split lockSPL Offset split offset DUP HF duplex offsetAM NB Noise blanker in AM mode PWR on CHK Power on checkAuto Rptr auto repeater Scan Resume scan resume29 9600 Mode Data socket speed Tune Strt auto tuner startPTT Tune PTT tune function Vsend SEL ACC socket outputLVL Spch S-level speech CI-V Addres CI-V addressCI-V Baud CI-V data rate CI-V TRN CI-V transceiveMaintenance Fuse replacementMemory backup CleaningTroubleshooting Power Supply Receive Problem Possible Cause SolutionTransmit Display Scan Problem Possible Cause Solution Optional INSTALLATIONS/SETTINGS Opening the transceiver caseIf filters Installation DOperationAT-180 internal switch description S2 S1 B aPIN no Description Name Internal Views Top viewBottom view Options SP-7EXTERNAL Speaker SP-10EXTERNAL Speaker SP-12EXTERNAL SpeakerSP-20EXTERNAL Speaker SP-21EXTERNAL SpeakerSpecifications + power on Power OFF then on to exit initial set modeMenu Guide Indication Description No. IndicationSSB/AM/FM mode CW mode Rtty mode Mode DisplayFor 2 sec Menu DisplayCount on us
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