Icom IC-2820H [155/164] Fuse replacement

Icom IC-2820H [155/164] Fuse replacement
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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, nd 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

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