Icom IC-25A Instruction Manual page 33

Your IC-25A/E 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 does not come | Power cord is improperly | Carefully reconnect power cord.
ON when the switch is | connected.
turned.
Disconnect the power сога,
replace the blown fuse, then
reconnect the power cord observ-
ing proper polarity.
Power cord is connected with
the polarity reversed.
Check for the cause, then replace
the fuse with a new one.
Blown fuse.
Turn the knob clockwise to a
suitable level.
VOLUME Control knob is
completely counterclockwise,
but not "clicked OFF".
The unit is in the transmit
mode, by the PTT Switch on
the microphone.
SQUELCH setting is turned
too far clockwise.
2. No sound comes from
the speaker.
Put the unit in the receive mode.
Turn the SOUELCH control
counterclockwise until noise can
be heard and reset it just below
the threshold.
Check if the external speaker
plug is inserted properly or if the
external speaker cable is cut.
External speaker is in use.
The internal speaker cable is | Connect the speaker connection.
not connected.
Check the feed line and correct
any improper condition.
The antenna feed line is cut
or shorted.
Sensitivity is low and
only strong signals are
audible.
Set the RF Power Switch to the
High (normal) position.
RF Power Switch is set at the
Low position.
No or low RF output.
PTT Switch is not functioning
due to bad connection of the
MIC connector.
Check the connection of the
MIC connector and correct any
problems.
Check the antenna feeder and
correct any problems.
The antenna feeder is cut or
shorted.
Bad connection of the MIC
connector.
Check the connection of the
MIC connector and correct any
problems.
5. Мо modulation.
The MIC cable is cut. Repair the disconnected or cut
wire.
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