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17
MAINTENANCE
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PROBLEM
POSSIBLE CAUSE
SOLUTION
REF.
Some memory channels
cannot be selected via the
tuning dial.
Scan does not operate.
Transmission is automati-
cally cut off.
Transmission continues
even when the PTT is re-
leased.
During tone squelch opera-
tion, the received audio
breaks off at the other station.
The function display shows
erroneous information.
• The memory channel number has not yet been
programmed.
• The squelch is open.
• Only 1 memory channel is programmed or other
channels are set as skip channels.
• Priority watch is activated.
• Time-out timer is activated.
• One-touch PTT function is activated.
• Transmitter’s microphone gain is too high.
• The CPU is malfunctioning.
• Select the channel via the microphone keypad to
check whether the channel has been programmed
or not.
• Set the squelch to the threshold point.
• Program other memory channels or cancel the
memory skip function in the desired channels.
• Cancel the watch.
• Set the timer to OFF.
• Turn the function OFF.
• Select low microphone sensitivity in set mode.
• Turn the ALC function ON in set mode.
• Reset the CPU.
—
p. 22
pgs. 62,
63, 79
p. 81
p. 101
p. 26
p. 102
p. 102
p. 116
■
Fuse replacement
If the fuse blows or the transceiver stops functioning, find the
source of the problem if possible, and replace the blown fuse
with a new, properly rated one (FGB 20 A) as shown at right.
20 A
fuse
Summary of Contents for IC-2820H
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