Icom IC-R2500 Instruction Manual

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Icom IC-R2500 Instruction Manual Manual pdf 76 page image

69TROUBLESHOOTING12PROBLEM POSSIBLE CAUSE SOLUTION REF.If your receiver seems to be malfunctioning, please check the following points before sending it to a service center.Does not turn on.No sound comes from thespeaker.Sensitivity is low and onlystrong signals are audible.Frequency cannot bechanged.Program scan does notoperate.Memory scan does not op-erate.Receive audio is distorted.• The AC adapter is not fully seated in the powerjack on the rear panel.• Volume level is too low.• Squelch level is set too high.• Selected tone or DTCS squelch does not matchreceived signal.• Antenna feedline or the antenna connector has apoor contact or is short circuited.• Attenuator function is activated.• The lock function is activated.• The squelch is open.• The start and end frequencies are the same.• The squelch is open.• Only 1 memory channel is programmed or otherchannels are set as skip channel.• The operating mode is not selected correctly.• Check the connection.• Rotate [VOL] to obtain a suitable level.• Rotate [SQL] to set the squelch level.• Turn the appropriate function OFF.• Check, and if necessary, replace the feedline orreattach the antenna connector..• Push [ATT•PRIO] to turn the Attenuator functionOFF.• Push and hold [PWR• ] for 2 sec. after powerON to turn the function OFF.• Set the squelch to the threshold point.• Program different start and end frequencies.• Set the squelch to the threshold point.• Program other memory channels or cancel thememory skip function in the desired channels.• Push and hold [MODE•SCAN] for 1 sec., then ro-tate [DIAL] to select suitable operating mode.p. 1p. 14p. 14p. 41p. 1p. 15p. 15p. 14p. 35p. 14pgs. 24,36p. 13