Icom IC-R20 instruction manual Maintenance, Troubleshooting

MAINTENANCE 14

■ Troubleshooting				If your receiver seems to be malfunctioning, please check the
				following points before sending it to a service center.
PROBLEM			POSSIBLE CAUSE		SOLUTION	REF.
No power comes on.			• The batteries are exhausted.		• Replace the batteries or charge the battery pack.	pgs. 8–10
			• The battery polarity is reversed.		• Check the battery polarity.	p. 8
No sound comes from the			• Volume level is too low.		• Rotate [R-DIAL] or push [Y] to obtain a suitable level.	p. 17
speaker.			• Squelch level is set too tight.		• While pushing [SQL], rotate [R-DIAL] to set the	p. 18
					squelch level.
			• Different tone is selected with tone squelch.		• Turn the appropriate function OFF.	p. 45
Sensitivity is low and only			• Attenuator function is activated.		• Push [ATT] for 1 sec. to turn the attenuator function	p. 19
strong signals are audible.					OFF.
			• RF gain setting is too low for SSB/CW modes.		• Push [RF GAIN] for 1 sec., then rotate [R-DIAL] to	p. 19
					select “MAX” level.
Frequency cannot be set.			• The lock function is activated.		• Push [• LOCK] for 1 sec. to turn the function OFF.	p. 16
No beep sound.			• Beep tones are turned OFF or the beep tone level		• Turn beep tone ON or set the beep tone level to ap-	p. 51
			is too low.		propriate level in set mode.
Receive audio is distorted.			• The operating mode is not selected correctly.		• Push [MODE SCAN] several times to select a suit-	p. 16
					able operating mode.
Desired set	mode	item	• “EXPAND” item is set to OFF.		• Turn “EXPAND” item ON.	p. 49
cannot be selected.
Programmed	scan	does	• Program scan edges are not programmed.		• Program a pair of scan edge channels.	p. 36
not start.
Memory or	bank	scan	• None or only one memory or bank channel is pro-		• Program at least 2 memory or bank channels	pgs. 26,
does not start.			grammed.			27

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