Fuse Replacement - Icom IC-E2820 Instruction Manual

PROBLEM
Some memory channels • The memory channel number has not yet been
cannot be selected via the programmed.
tuning dial.
Scan does not operate. • The squelch is open.
• Only 1 memory channel is programmed or other
channels are set as skip channels.
• Priority watch is activated.
Transmission is automati- • Time-out timer is activated.
cally cut off.
Transmission continues • One-touch PTT function is activated.
even when the PTT is re-
leased.
During tone squelch opera- • Transmitter's microphone gain is too high.
tion, the received audio
breaks off at the other station.
The function display shows • The CPU is malfunctioning.
erroneous information.

■ 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.
POSSIBLE CAUSE SOLUTION
• 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.
20 A
fuse
16
MAINTENANCE
REF.
—
p. 22
pgs. 61,
62, 78
p. 80
p. 199
p. 26
p. 100
p. 100
p. 114
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