Troubleshooting - Icom IC-455 Instruction Manual

The following points are designed to help you correct problems that are not equipment
malfunctions. If you cannot locate the cause of a problem, or solve it through these
points, contact your nearest Icom Dealer or Service Center.
The transceiver does not turn ON.
z The power connector has a poor contact.
→ Check the connector pins.
z A bad connection to the power supply.
→ Check the connection between the transceiver and the power supply. (p. 32)
z The fuse is blown.
→ Repair the problem, and then replace the fuse. (p. 34)
Little or no sound comes from the speaker.
z The volume level is set too low or 0 (Mute mode).
→ Adjust the volume level. (p. 5)
z The squelch level is set too high.
→ Adjust the squelch level. (p. 5)
z A selective call or squelch function is activated, such as Tone Squelch or Pocket Beep
function.
→ Turn OFF the appropriate function. (pp. 16, 17)
Sensitivity is low, and only strong signals can be heard.
z The antenna feedline or the antenna connector has poor contact or is shorted.
→ Check and replace the feedline or solder the antenna connector again if necessary.
(p. 35)
No beep sounds.
z The Beep function is OFF.
→ Turn ON the Beep function. (p. 27)
L You can also set the beep output level. (p. 27)
No contact possible with another station.
z The other station is using the Tone Squelch function.
→ Turn ON the Tone Squelch function. (p. 16)
The operating channel cannot be changed.
z The Lock function is activated.
→ Hold down [
z The Priority Scan is paused on the watching frequency.
→ Push to stop the scan. (p. 13)
Scan does not start.
z The squelch is open.
→ Adjust the squelch level. (p. 5)
z The Priority Scan is activated.
→ Stop the scan. (p. 13)
z More than 2 Tag channels are not set.
→ Set the Tag channels. (p. 11)
Transmission continues even when the PTT is released.
z The PTT Hold function is activated.
→ Turn OFF the PTT Hold function. (p. 28)
Erroneous information is displayed on the function display.
z The CPU is malfunctioning.
→ Reset the CPU. (p. 25)

TROUBLESHOOTING

] for 2 seconds to turn OFF the Lock function. (p. 8)
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