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Troubleshooting
Check the following before requesting for repair of the transceiver.
Problems Related to Reception and Transmission
Symptom Probable Cause Corrective Action Refer to
Power does not turn on when [ ] is
pressed.
The power switch of the regulated DC power
supply is not turned on.
Set the power switch to ON.
4-1
The DC power cable is not correctly connected. Check the DC power cable to ensure that the
polarity is correct. (Red: +, black: -)
1-1
The DC power cable is not fully inserted. Ensure that the cable is fully inserted. 1-1
The fuse of the DC power cable is blown. Address the cause of the blown fuse and
replace it with a new fuse according to the
designated capacity.
17-4
A voltage exceeding the 13.8 V DC ±15% range
is applied.
Check the output voltage of the regulated DC
power supply and configure it to the rated
voltage (DC 13.8 V).
1-1
The screen is not displayed normally
when this transceiver is powered on.
The microcomputer is malfunctioning. Reset this transceiver.
17-1
A backup data damage detected
screen is displayed.
The initialization data was not configured
correctly for some unknown reason.
Press F4 [OK] on the “backup data damage
detected screen” to perform Full Reset again.
Signals cannot be received even
when an antenna is connected.
The RX sensitivity is low.
The squelch is closed. Turn the [SQL] control and adjust accordingly. 4-2
The attenuator is ON. Set the attenuator to OFF. 6-1
The preamplifier is OFF. Set the preamplifier to ON. 5-6
The antenna 1/2 selection is wrong. Select the correct antenna. 4-10
RX ANT is ON. Check whether RX ANT is set to ON. 4-10
Unable to perform tuning even though the
antenna tuner is ON.
Press and hold [AT] to perform tuning.
Alternatively, stop the tuning operation.
4-11
The gain level is lowered using the [RF] control. Turn the [RF] control all the way to the right. 4-2
The transverter settings are not correctly
configured.
If the transverter is ON, check whether the
settings are correctly configured and whether it
is functioning properly.
16-15
The transverter is ON. If the transverter is ON, check whether it is
functioning properly.
16-15
Signals received are not correctly
demodulated.
The operating mode is incorrectly selected. Try switching to a different mode. 4-4
The AGC function settings are not correctly
configured.
Configure the AGC function settings correctly.
5-2
The frequency does not change when
the [RIT/XIT] control is turned.
The RIT/XIT function is OFF. Press [RIT] or [XIT].
5-7
The cutoff frequency of the RX audio
in the SSB mode is extremely high or
extremely low.
The RX DSP filter settings are not suitable for
operation.
Change them to the appropriate settings.
6-2
There is significant distortion in the
audio.
The AGC function is OFF. Set the AGC function to ON, or turn the [RF]
control to adjust RF gain.
5-2
The [AF] control is set to a loud volume level. Turn the [AF] control to adjust the volume. 4-2
No sound is output from the speaker. The [AF] control is turned all the way to the left. Turn the [AF] control to the right. 4-2
The [SQL] control is turned all the way to the
right.
Turn the [SQL] control to the left.
4-2
Headphones are connected. Unplug the headphones. 1-2
CTCSS is set to ON in the FM mode. Set CTCSS to OFF. 5-30
The S meter deflection is small in the
FM mode.
The S meter sensitivity level is low.
Configure the S meter sensitivity to High in
Menu [0-07].
4-10
“SCP.OVF” is displayed on the
bandscope.
The bandscope is receiving excessive signal. Use the attenuator for the bandscope.
7-1
18 TROUBLESHOOTING
18-2
182


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