Icom IC-280E Instruction Manual page 18

17
_ SECTION Vill TROUBLE SHOOTING _________
Your 1С-280Е has been tested very carefully at the factory before shipping. The chart below has
been designed to help you correct any problems which are not equipment malfunctions. If you
are not able to locate the problem and/or solve it through use of this chart, please contact your
dealer or ICOM distributor for assistance.
1. Power cannot be turned | Improper connection of the Reconnect the power cord
ON. power cord. properly.
Check the contact pins.
Mal-contacts of the power
connector.
Reverse polarization. Correct the polarization.
Turn the VOL control CW toa
suitable audio level.
Turn the SOL control CCW until |
noise can be heard and reset it
just below the threshold.
2. No sound comes from
the speaker.
VOL control is fully CCW.
SOL setting is turned too
high (too far CW).
External speaker is in use. Check if the external speaker
plug is inserted properly or if the
external speaker cable is not cut.
Check if the control cable is
properly connected.
Remote control operation
setting.
The antenna feeder is cut or | Check the antenna feeder and
shorted. correct any problems.
. Sensitivity is low and
only strong signals can
be heard.
Set the High-Low power switch
to the High position.
High-Low Power switch is set
at the Low position.
. Мо or low RF output.
PTT switch is not functioning
due to bad connection of the
MIC connector.
Make the gap of each pin wider.
Check the antenna feeder and
correct any problems.
The antenna feeder is cut or
shorted.
Bad connection of the MIC
connector.
The MIC cable is cut.
. No modulation. Make the gap of each pin wider.
Repair the disconnected or cut
wire.
Check to see that the remote
cable is properly connected.
Remote control operation
setting.
Unit was turned ON and OFF
too quickly.
Turn OFF the unit and turn it
ON again.
. LED does not illumi-
nate or displays irre-
gular figures.
The main switch of the
external power supply was
turned OFF or the power
plug was unplugged.
. The display shows
"5.00" when the power
is turned ON and "5.00"
at the memory channels.
Use the continuous operating
power supply or optional
memory power supply.
The power failed (when using
the AC power supply).