Kenwood TS-890S Instruction Manual page 183

Symptom
There is no TX output power.
The level of TX output power is low.
There is no transmission.
The PWR meter is not displayed.
Significant background noise can be
heard when there is no sound during
transmission in the SSB and AM
modes.
The VOX function is not functioning.
Transmission starts by itself when this
transceiver is not operated.
The receiving station has reported that
the audio sound is distorted or
clipped.
Probable Cause
The microphone connector is not fully inserted. Insert the microphone connector fully.
The antenna connector is not properly
connected.
The microphone gain level is turned down.
The TX output power is set to the minimum
level.
High-temperature protection is activated.
The carrier level is low.
The speech processor output level is low.
The TX audio source used for transmission is
different from the input path of the TX audio
source input.
Drive output (DRV) is enabled.
The straight key or paddle is not correctly
connected.
The transverter function is turned on.
This transceiver is transmitting in a band (135
kHz or 475 kHz) that is not compatible with the
output from the antenna connector.
The [PTT] switch is locked while it is ON when
a desk microphone is used.
The frequency has deviated from the amateur
band.
TX Inhibit is ON.
Microphone gain is too high.
The input level setting of the speech processor
is high.
The VOX gain setting is too low.
The anti VOX gain setting is too high.
The VOX function is ON or the VOX gain level
is not properly adjusted.
The signal level of the TX audio source that is
input from the rear panel terminal is high.
Audio signal is input from a connector for which
the audio source setting of the TX audio is
enabled and the same audio source is also
specified for Data VOX.
Microphone gain is high.
The input level of the speech processor is high. Use the TX monitor function or adjust the
TROUBLESHOOTING 18
Corrective Action
Connect the antenna properly.
Adjust the microphone gain.
Adjust the TX output power.
End the transmission and allow the
temperature of this transceiver to go down.
Turn the [CAR] control on the Carrier Level
configuration screen until the pointer of the ALC
meter falls within the appropriate range.
Turn the [MIC/PITCH] control until the pointer
of the ALC meter falls within the appropriate
range.
Check the input path of the TX audio to be
modulated.
Press [DRV] to switch off drive output.
Check the connection.
Press and hold [GENE] to cancel the
transverter function.
Press [DRV] to output from the DRV connector
(drive output).
Turn off the PTT lock.
Set the frequency to an amateur band.
Configure TX Inhibit to "Off" in Menu [6-03].
Carry out audio transmission while monitoring
the ALC meter and adjust the microphone gain
such that a small amount of ALC voltage is
applied.
Turn the [MIC/PITCH] control until the pointer
of the COMP meter falls within the appropriate
range.
Adjust the VOX gain.
Adjust the anti VOX gain.
Set the VOX function to OFF or adjust the VOX
gain level.
Lower the level of the signal input.
Set Data VOX to OFF or review the audio
source setting before adjusting the VOX gain
level.
Use the TX monitor function or adjust the
microphone gain while having the receiving
station monitor the transmission.
speech processor input level while having the
receiving station monitor the transmission.
Refer to
1-2
2-6
4-8
4-8
5-8
8-4
8-1
4-11
1-2
1-3
16-15
16-15
2-8
4-3
16-11
4-8
8-4
8-1
8-2
8-1
8-1
4-8
8-4
18-3