Maintenance; Troubleshooting - Icom IC-R20 Instruction Manual

■ Troubleshooting

PROBLEM
No power comes on. • The batteries are exhausted.
• The battery polarity is reversed.
No sound comes from the • Volume level is too low.
speaker. • Squelch level is set too tight.
• Different tone is selected with tone squelch.
Sensitivity is low and only • Attenuator function is activated.
strong signals are audible.
• RF gain setting is too low for SSB/CW modes.
Frequency cannot be set. • The lock function is activated.
No beep sound. • Beep tones are turned OFF or the beep tone level
is too low.
Receive audio is distorted. • The operating mode is not selected correctly.
Desired set mode item • "EXPAND" item is set to OFF.
cannot be selected.
Programmed scan does • Program scan edges are not programmed.
not start.
Memory or bank scan • None or only one memory or bank channel is pro-
does not start. grammed.
POSSIBLE CAUSE

MAINTENANCE

If your receiver seems to be malfunctioning, please check the
following points before sending it to a service center.
SOLUTION
• 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 the
squelch level.
• Turn the appropriate function OFF.
• Push [ATT] for 1 sec. to turn the attenuator function
OFF.
• Push [RF GAIN] for 1 sec., then rotate [R-DIAL] to
select "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 channels
14
REF.
pgs. 8–10
p. 8
p. 17
p. 18
p. 45
p. 19
p. 19
p. 16
p. 51
p. 16
13
14
p. 49
p. 36
pgs. 26,
27
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