Icom IC-2820H Instruction Manual - Page 154

Maintenance - programming cable

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17 MAINTENANCE ■ Troubleshooting If your transceiver seems to be malfunctioning, please check the following points before sending it to a service center. PROBLEM Does not turn on. POSSIBLE CAUSE • Power connector has a poor contact. • Polarity of the power connection is reversed. • Blown fuse. SOLUTION REF. • Check the connector pins. - • Re-connect the power cable observing the proper pgs. VII, polarity. Replace the fuse if damaged. VIII, 134 • Check the cause, then replace the fuse. p. 134 No sound comes from the • Volume is too low. • Rotate [VOL] clockwise. speaker. • The audio mute function is activated. • Push any key to deactivate it. • Squelch is set too high. • Set the squelch level to the threshold. • A selective call or squelch function is activated • Turn the appropriate function OFF. such as pocket beep or tone squelch. p. 20 p. 27 p. 20 pgs. 86, 87, 91 Sensitivity is low and only • Antenna feedline or the antenna connector has a • Check, and if necessary, replace the feedline or sol- p. VII strong signals are audible. poor contact or is short circuited. der the antenna connector again. • Squelch attenuator function is activated. • Set [SQL] between 10-12 o'clock position. p. 22 No contact possible with • The other station is using tone squelch. another station. • The transceiver is set to duplex. • Turn the tone squelch function ON. • Set to simplex. p. 86 p. 30 Repeater cannot be ac- • Wrong offset frequency is programmed. • Correct the offset frequency. cessed. • Wrong subaudible tone frequency is programmed. • Correct the subaudible tone frequency. p. 34 p. 32 Frequency cannot be set. • The frequency lock function is activated. • Turn the function OFF. p. 19 • Priority watch is paused on the watching frequency. • Push [LOW•PRIO] for 1 sec. to cancel the watch. p. 81 Frequency cannot be set • The frequency lock function is activated. • Turn the function OFF p. 19 via the microphone. • The microphone keypad lock function is activated. • Push [FUNC] then [sqlZ #(16KEY-L)] to deactivate p. 19 the microphone keypad lock function. • Priority watch is paused on the watching fre- • Push [LOW•PRIO] for 1 sec. to cancel the watch. p. 81 quency. 133

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133
MAINTENANCE
17
PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
■
Troubleshooting
If your transceiver seems to be malfunctioning, please check
the following points before sending it to a service center.
Does not turn on.
No sound comes from the
speaker.
Sensitivity is low and only
strong signals are audible.
No contact possible with
another station.
Repeater cannot be ac-
cessed.
Frequency cannot be set.
Frequency cannot be set
via the microphone.
• Power connector has a poor contact.
• Polarity of the power connection is reversed.
• Blown fuse.
• Volume is too low.
• The audio mute function is activated.
• Squelch is set too high.
• A selective call or squelch function is activated
such as pocket beep or tone squelch.
• Antenna feedline or the antenna connector has a
poor contact or is short circuited.
• Squelch attenuator function is activated.
• The other station is using tone squelch.
• The transceiver is set to duplex.
• Wrong offset frequency is programmed.
• Wrong subaudible tone frequency is programmed.
• The frequency lock function is activated.
• Priority watch is paused on the watching frequency.
• The frequency lock function is activated.
• The microphone keypad lock function is activated.
• Priority watch is paused on the watching fre-
quency.
• Check the connector pins.
• Re-connect the power cable observing the proper
polarity. Replace the fuse if damaged.
• Check the cause, then replace the fuse.
• Rotate [VOL] clockwise.
• Push any key to deactivate it.
• Set the squelch level to the threshold.
• Turn the appropriate function OFF.
• Check, and if necessary, replace the feedline or sol-
der the antenna connector again.
• Set [SQL] between 10–12 o’clock position.
• Turn the tone squelch function ON.
• Set to simplex.
• Correct the offset frequency.
• Correct the subaudible tone frequency.
• Turn the function OFF.
• Push [LOW•PRIO] for 1 sec. to cancel the watch.
• Turn the function OFF
• Push [FUNC] then [sql
Z
#(16KEY-L)] to deactivate
the microphone keypad lock function.
• Push [LOW•PRIO] for 1 sec. to cancel the watch.
—
pgs. VII,
VIII, 134
p. 134
p. 20
p. 27
p. 20
pgs. 86,
87, 91
p. VII
p. 22
p. 86
p. 30
p. 34
p. 32
p. 19
p. 81
p. 19
p. 19
p. 81