Troubleshooting - Icom IC-7610 Basic Manual

10
MAINTENANCE

Troubleshooting

The following chart is designed to help you solve problems that are not equipment malfunctions.
If you are unable to locate the cause of a problem, or solve it through the use of this chart, contact your nearest
Icom Dealer or Service Center.
PROBLEM
Power does not turn ON
when is pushed.
POWER
No sound is heard from
the speaker.
Sensitivity is too low, and
only strong signals are
heard.
No power output or the
output power is too low.
POSSIBLE CAUSE
The power cable is not connected
properly.
The external power supply is turned OFF. Turn ON the external power supply.
The DC power cable fuses or circuitry
fuse are blown.
The audio level is too low.
The squelch is closed.
If no sound is heard only from the Sub
band, the Dualwatch function is OFF.
Headphones are connected.
The Mute function is ON.
The external speaker cable is defective.
The attenuator is activated.
The squelch is closed.
The antenna is defective or the coaxial
cable is defective.
You are using an antenna that is not
suitable for the band you have selected.
The operating frequency is outside the
ham band.
The modulation input signal level is set
too low.
The microphone is bad, or the [MIC]
connector is shorted or defective.
The antenna SWR is more than 3:1.
The antenna is not properly tuned.
The transmit output power is set too low. Adjust the RF POWER in the Multi-
SOLUTION
Reconnect the DC power cable properly. p. 2-1
Find and repair the cause of the problem,
and then replace the damaged fuse with
a new one.
Rotate
AF RF/SQL
obtain a suitable listening level.
Rotate
AF RF/SQL
o'clock position to open the squelch.
Turn ON the Dualwatch function.
Disconnect the headphones.
Push
AF RF/SQL
function on whichever band is selected
(Main or Sub).
Check the external speaker cable and
repair it.
Turn OFF the attenuator in the
Multi-function key group.
Rotate
AF RF/SQL
position to open the squelch.
Repair the problem and then reconnect
the antenna.
Connect an antenna suitable for the
operating frequency.
Hold down TUNER
Set the frequency to a ham band.
Adjust the microphone gain in MIC GAIN. p. 3-9
Test the microphone and check the [MIC]
connector.
Adjust the antenna for an SWR of less
than 3:1.
Hold down
TUNER
the antenna.
function menu.
10-2
p. 2-1
–
p. 3-1
(inner) clockwise to
p. 3-7
(outer) to the 12
p. 3-2
p. 13-1
p. 1-1
to turn OFF the Mute
–
p. 4-1
p. 3-7
(outer) to 12 o'clock
p. 2-2
p. 2-2
p. 7-2
to tune the antenna.
p. 3-4
p. 13-3
p. 7-3
p. 7-3
for 1 second to tune
p. 3-8
REF.