Icom IC-R20 Instruction Manual

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Contents

Icom IC-R20 Instruction Manual Manual pdf 91 page image

7814MAINTENANCEPROBLEM POSSIBLE CAUSE SOLUTION REF.■ Troubleshooting If your receiver seems to be malfunctioning, please check thefollowing points before sending it to a service center.No power comes on.No sound comes from thespeaker.Sensitivity is low and onlystrong signals are audible.Frequency cannot be set.No beep sound.Receive audio is distorted.Desired set mode itemcannot be selected.Programmed scan doesnot start.Memory or bank scandoes not start.• The batteries are exhausted.• The battery polarity is reversed.• Volume level is too low.• Squelch level is set too tight.• Different tone is selected with tone squelch.• Attenuator function is activated.• RF gain setting is too low for SSB/CW modes.• The lock function is activated.• Beep tones are turned OFF or the beep tone levelis too low.• The operating mode is not selected correctly.• “EXPAND” item is set to OFF.• Program scan edges are not programmed.• None or only one memory or bank channel is pro-grammed.• Replace the batteries or charge the battery pack.• Check the battery polarity.• Rotate [R-DIAL] or push [Y] to obtain a suitable level.• While pushing [SQL], rotate [R-DIAL] to set thesquelch level.• Turn the appropriate function OFF.• Push [ATT] for 1 sec. to turn the attenuator functionOFF.• Push [RF GAIN] for 1 sec., then rotate [R-DIAL] toselect “MAX” level.• Push [• LOCK] for 1 sec. to turn the function OFF.• Turn beep tone ON or set the beep tone level to ap-propriate level in set mode.• Push [MODE SCAN] several times to select a suit-able operating mode.• Turn “EXPAND” item ON.• Program a pair of scan edge channels.• Program at least 2 memory or bank channelspgs. 8–10p. 8p. 17p. 18p. 45p. 19p. 19p. 16p. 51p. 16p. 49p. 36pgs. 26,271314