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. |
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switch is pushed. |
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| Fuse is blown. | Check for the cause, then replace the | p. 56 |
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| fuse with a spare one. |
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| (Fuses are installed in two places. One is |
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| installed in the DC power cable and the |
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| other is installed in the PA unit. |
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| Battery is exhausted if you are using | Check the battery voltage with the | — |
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| a 12 V battery as the power source. | [POWER] pushed IN. |
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No sound comes | from | Volume level is set too low. | Rotate [AF] clockwise to obtain a suit- | p. 1 |
the speaker. |
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| able listening level. |
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| The squelch is closed. | Rotate [SQL] counterclockwise to | p. 1 |
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| open the squelch. |
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| The transceiver is in the transmitting | Release [PTT] on the microphone or | — |
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| condition. | check the SEND line of an external |
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| unit, if connected. |
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| An external speaker or headphones | Check the external speaker or head- | p. 12 |
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| are connected. | phone plug connection. |
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| Check the speaker ON/OFF switch or | p. 12 |
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| speaker A/B switch, when an optional |
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Sensitivity is low. |
| The antenna is not connected properly. | Reconnect to the antenna connector. | — |
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| The antenna feed line is cut or shorted. | Check the feed line and correct any |
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| improper conditions. | — |
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| The antenna for another band is | Select an antenna suitable for the | p. 14 |
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| selected. | operating frequency. |
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| Make sure that [ANT1] is used for |
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| frequencies less than 60 MHz and |
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| [ANT2] is used for frequencies of 60 |
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| MHz and above. |
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| The antenna is not properly tuned. | Push [TUNE] to manually tune the | pgs. 27, |
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| antenna. | 28 |
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| The attenuator function is activated. | Push [ATT] to turn the function OFF. | p. 21 |
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Receive audio is distor- | The operating mode is not selected | Select a suitable operating mode. | p. 19 | |
ted. |
| correctly. |
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| The [SHIFT] control is set | Set [SHIFT] to the center position. | p. 20 |
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Receive signal is distor- | Noise blanker function is activated. | Push [NB] to turn the function OFF. | p. 21 | |
ted with strong signals. |
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| Preamp is activated. | Push [P.AMP] to turn the function | p. 21 |
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| OFF. |
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